Medical Forum / General / Nutrition / November 2004
"Lipid bilayer membranes" and your health.
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montygram - 14 Oct 2004 18:46 GMT This post is in response to MattLB and Mr. Carter, but it is for those with an open mind. Mr. Carter’s mind is not entirely closed, but MattLB’s appears to be. All I ask is to supply evidence to support one’s claim. If there is solid contradictory evidence against it, a hypothesis must be abandoned or reworked significantly. I’m not sure what MattLB’s “angle” is, but he appears unwilling to face overwhelming evidence against his notions (just a small part of this evidence is presented below). The health implications are enormous, however, and should be of interest to anyone reading posts in this newsgroup.
I have investigated the history of the “lipid membrane” claims, and they appear in books first as one of several possibilities, then as a likelihood, then as “fact,” and yet no experiments were done to verify it. In the first “modern” text on this subject (in English), Setlow and Pollard’s “Molecular Biophysics” (1962), Danielli’s model of a “cell membrane” consisting of banded proteins and fatty acids, is presented, for example. While this model is no longer accepted by any scientist, it was a reasonable idea at the time, but it just did not account for all of the data. That same year Gillbert Ling presented a hypothesis that does account for all the data in his book, “A physical theory of the living state.” Since then, he has refined his hypothesis and examined new evidence (see his latest “Life at the cell and below-cell level,” for example). No only can the “lipid bilayer” claim not account for all the data, but those who write textbooks cannot account for the data in a way that makes any sense even in a simplified form. For example, textbooks claim that many cells are subject to tremendous shearing forces, and yet they also claim that the cytoskeleton provides structure to the cell (which is why it got the “skeleton” name). Some books even say the “cell membrane” is “delicate.”
MattLB expresses concern about my motivations, but he appears much less interested in actual science. I cite evidence in abundance (see below), but he rarely cites anything of use (though he did cite a study that actually contradicts his claims, which I discuss below). A textbook statement that does not cite a source is not science, it is an educational model, at best. Interestingly, he criticized my interest in the HIV=AIDS claims. Viruses do not posses a “lipid bilayer,” yet have survived for millions of years: “Chemical analysis of viruses reveals a nucleic acid content varying from 1 per cent to 50 per cent according to the virus, the remainder being almost entirely protein…” Page 139 of “Davidson’s The Biochemistry of the Nucleic Acids” (8th edition, 1976). Moreover, in the nucleus of cells, proteins are the structural element: “These major proteins [actin and myosin, amongst others]… are stable which suggests that they may play a structural role” (page 17). Now if you’ve got a “lipid bilayer” (or just phospholipds curled up into balls and stuck into the groove in structural proteins, as the evidence suggests) packed with unstable polyunsaturated fatty acids, you’ve got something worse than a recipe for disaster.
If viruses broke down “lipid bilayer cell membranes,” as is claimed by HIV=AIDS people, then it would irresponsible to use protease inhibitors because lipase breaks down fatty acids. A lipase inhibitor should be used. But the protease inhibitors do work (too well, in the sense of toxic side-effects) – unfortunately, HIV is a weak virus, and blaming it for pathological conditions is like blaming plankton because it came in on the tidal wave that knocked your house down.
Science is supposed to debunk dogma, not create and propagate it, but today we see “experts” making all kinds of claims, yet not citing evidence, and worse still, not solving any of the problems for which they are being paid to solve. This may be more of a psycho-social issue, and is clearly not a topic for the sci.med.nutrition newsgroup. Anyone who reads a web site like www.sciencedaily.com on a regular basis can see for themselves how existing notions are modified or abandoned quite often. This is what is known as the “scientific process,” though MattLB seems to be unaware of it. In fact, today in the local newspaper, New York state’s “Newsday,” page A28, there is a story about scientists who study Huntington’s disease. They claim that their experiments show that the protein that clumps up in the brains of these patients is a protective mechanism, which is consistent with the idea that it is oxidative stress that is the primary cause, and that the clumped protein is further down the pathway, just as cholesterol buildup in arteries is not due to having “high cholesterol” (though high amounts of serum oxysterols is likely worse for most people than lower levels). For one example, see: “Cerebrospinal fluid F2-isoprostanes are elevated in Huntington’s disease.” Montine et. al., in Neurology.1999; 52: 1104. However, the following presents a great review, and supports my claims about the dangers of dietary polyunsaturates:
“Neurochem Res. 2000 Oct;25(9-10):1357-64.
Isoprostanes, novel markers of oxidative injury, help understanding the pathogenesis of neurodegenerative diseases.
Greco A, Minghetti L, Levi G.
Laboratory of Pathophysiology, Istituto Superiore di Sanita, Rome, Italy.
Isoprostanes are prostaglandin-like compounds which are formed by free radical catalysed peroxidation of arachidonic acid esterified in membrane phospholipids. They are emerging as a new class of sensitive, specific and reliable markers of in vivo lipid peroxidation and oxidative damage. Since their initial description of in 1990, the rapid development of analytical methods for isoprostane measurement has allowed to overcome some of the pitfalls of the previous and most widely used methods of assessing free radical injury. Here, we summarise the current knowledge on these novel class lipid peroxidation products and the advantages of monitoring their formation to better define the involvement of oxidative stress in neurological diseases. Although the literature data are still not abundant, they indicate that in vivo or post mortem cerebrospinal fluid and brain tissue levels of isoprostane are increased in some diseases such as multiple sclerosis, Alzheimer's disease, Huntington's disease, and Creutzfeldt-Jakob disease.”
In terms of both biophysics and biochemistry, the “lipid bilayer” claim is ridiculous. For example, if you put a paper mache shirt on a mannequin, then hit the shirt with a hammer, the shirt is going to rip. That’s what would happen to this “lipid bilayer membrane” if it were some sort of structural wall. Chemically, there are no bonds holding this alleged structure together, only its hydrophobic qualities. What is the mechanism by which cells are directed to build “lipid bilyaers?” Euphemistically, I’ve seen claims that this alleged structure “forms spontaneously,” meaning they haven’t got a clue. Cells are highly ordered and directed. A cellular signal would be required. But there is no evidence whatsoever here, and the reason is that the fatty acids are just being pushed out by the water molecules bound to the structural/cytoskeletal proteins. If you drink something and have some fat on your lip, you might see a little oil slick in your cup, on top of whatever the water-based liquid is, and this is because the water is pushing the fat up there, and this is due to the non-polar quality of the fat and the polar quality of the water. Basic science, no mystery.
I don’t know what kind of education MattLB received, though I don’t have any doubt he does well on multiple-choice tests, because he seems entirely bereft of critical thinking skills. He claims that the EM photos that took years to create (in order to illustrate a “lipid bilayer”) are the “reality,” and yet they don’t show hydrophobic tails or embedded “channel proteins” – they are undeniably artifacts. Furthermore, these photos could represent proteins as well as just about anything else that one would find at this interfacial site. Keep in mind, I am not suggesting that plenty of phospholipids are not present, just that they do not play a structural role, and that is because I have not seen the evidence that would support such an outrageous claim. There is no such biological entity held together without one of the known bond types. Here’s a good quotation about these molecules:
“We could not envision a cell without these split-personality molecules, which, being unable to decide between oil and water, are consigned to exist permanently at interfaces.” Page 29. Harold J. Morowitz (Professor of Molecular Biophysics and Biochemistry at Yale) “Mayonnaise and the Origin of Life: Thoughts of Minds and Molecules,” (1985).
These phospholipids just curl up and get stuck in grooves in the structural proteins (more evidence presented below). I have a question for MattLB. Do you or do you not understand that water molecules can adsorb to protein molecules? This is as basic as it gets, as there is no other explanation for gelatin, as well as many biological molecules. And if the answer is yes (and if it isn’t, you are dealing in religion not science, whatever your credentials happen to be), then why is it so difficult for you to consider the possibility that ATP allows H2O molecules to adsorb to the structural proteins, with phospholipids , as Morowitz says, just getting tossed around at interfaces, with some finding their way into the grooves in the cytoskeletal proteins?
You are the “flat-earther,” not me. I’ve spent considerable time investigating this issue, and like the HIV=AIDS issue, it makes no difference to me what the “reality” is, but I don’t want fairy tales, I want science, and science makes certain demands. If you want to name call, like your new friend Mr. Carter, that’s fine, but I want to see the scientific evidence as well. And that, you just do not have. What’s worse, you don’t even have common sense on your side on this issue. Just because something is in a textbook does not mean it is accurate. The science textbooks I own that have been published over the last few years are filled with phrases like “it is believed,” “this may be,” and “it is assumed.” If assumptions such as HIV causing “AIDS,” “cell membranes” being structural, or dietary polyunsaturated fatty acids being “essential” were true, there would have been much more progress in numerous areas of medicine, but these faulty notions are holding back progress and making people ill. And just as I said to Mr. Carter, if you can get a Ph.D. in cellular biology to agree to a standard debate format with full public and media access, I’ll get a Ph.D., if not Gilbert Ling himself, to agree to take the side I am espousing in this post (actual traveling expenses will be required, if travel is necessary). The ball’s in your court, MattLB: supply the evidence or set up the debate. But no, you’ll just keep tossing around non-evidence (or evidence that contradicts your own arguments) and textbook statements as if you were some sort of cult leader trying to indoctrinate followers with “the right way,” instead of doing the proper investigation, research, and questioning.
One point that should be made here is that establishment scientists, in general, are highly specialized, and do not question claims made by their colleagues in a related field. Assumptions get tossed around, and often find their way into textbooks, without any verification through scientific experimentation. However, if one looks at all the “chronic disease” of today (as well as other phenomena, such as “chronic fatigue syndrome,” “AIDS,” etc.), and thoroughly investigates the actual evidence (not the assumptions or textbook statements), one finds that the unifying thread is that while excess iron, low stomach acid, vitamin/mineral deficiency, etc., can all be major problems, dietary polyunsaturated fatty acid consumption beyond a trace amount deserves to be called the underlying cause. Do your own research – go to www.pubmed.com and search for arachidonic, lipid peroxidation, oxidative stress, linoleic, and free radicals, for starters.
Below is a response to a post by MattLB about “cell membranes” from a few months back, but because of computer problems, I was unable to post it then, so I thought it best to save it until the issue came up again.
Science is supposed to be the evidence that exists at a given time as interpreted by those who are familiar with the material and willing to keep an open mind. If most of these “experts” agree, then claims are called theories. If the experts believe more work needs to be done, claims are called hypotheses. If a claim can be repudiated, the claim must be abandoned or reworked substantially. In the absence of anything better, “models” are often cooked up to explain something, but what’s happened over the years is that models (or even worse, “markers,” such as “high cholesterol,” have come to be presented by “experts” almost as a disease in and of themselves) have come to be taken for hard theories. And, unfortunately, some disciplines, such as biology, suffer from a general unwillingness to question assumptions that were never even hypotheses, but were included in textbooks because they were intuitive (and could not simply be ignored), just as sages once believed the earth was flat (technically, they are called “models,” which means that they’ve got to put something in the textbook to cover an area that is poorly understood, so they fabricate a story that sounds reasonable if you don’t question it too closely, or at all). This is the case for the so-called lipid bilayer that, most textbook authors now claim, keeps the inner contents of cells (which they claim is largely aqueous water) enclosed and protected. The scientific evidence against this notion is overwhelming. You can read one of Gilbert Ling’s recent books and decide for yourself. What is interesting is that you can cook up a few common food items and disprove the lipid bilayer claim very easily (also explained below). Why this is important in the diet and health context will be made clear below. The following was composed over a number of days, whenever I could spare the time, so I apologize in advance for any “choppiness” in the presentation.
The quoted passages are mostly from one MattLB post, unless otherwise stated. MattLB claims to be an X-ray crystallographer, which means he is dealing with artifacts, which are often nothing more than mirages, and as will be made clear below, he seems to value common sense and basic scientific methodology very little. For those of you who are interested, read “The Billion-Dollar Molecule” (1994) by Werth, to get a sense of what our great scientists are doing these days. In this book, Mark Murko, who also seeks to delineate a protein’s structure, states: “…not all the equations we use to describe those interactions are accurate. Some of them are fudge factors. Some of them are thought to be correct even though the experimental data they’re based on are wrong, only nobody knows that because nobody’s gone back and double-checked the experiments. Some are pure guesses. There are assumptions, biases. There’s user error. There’s imprecision in the hardware and software.” Page 303. And on page 209, it is said that the great chemist Joshua Boger thinks biology is “too mushy.” Boger states: “I mean, what are the basic concepts of biology and how sure are we of them? Well, there aren’t any, hardly. It isn’t that the people are stupid, it’s that the data isn’t there.” But some things are known, and then common sense can be applied (explained below).
Photos of “lipid bilayer” membranes, taken by an electron microscope after staining with a particular stain, produce two continuous lines, like railroad tracks. Where are the channels, pumps, or pores? Why don’t the fatty acid “tails” ever show up? They never have. And why are the lines straight – shouldn’t there be “bumps” (proteins, etc.)? How could all the molecules that come in and out of a cell every second (according to this “theory”) get through this apparently continuous band? One thing that is never said explicitly is that kinds of other “membranes” can be created by using different stains and methods (for instance, the freeze fracture process). None may accurately represent what the “membrane” actually looks like, at least in terms of the models that have been proposed, but under these conditions, scientists need to be honest about what they actually know and what they don’t. Why doesn’t MattLB supply references for X ray crystallography that purports to show this “lipid bilayer” in enough detail for conclusive visual evidence of its existence? Otherwise, why does he talk about this technique as if it can “prove” his claims?
To get a little technical:
The osmic acid used for the “lipid bilayer” EM pictures you find in many textbooks make no sense, because osmic acid “reacts primarily w/ double bonds and sulfhydryl groups of proteins, causing major conformational changes in the 1E and 2E structure of proteins.” Thus, these “lipid bilayer” pictures are much more likely to be proteins, or mostly proteins, than anything else.
Source: www.uga.edu/~caur/lect4.ht
Also, osmic acid is a very strong oxidant and would be able to easily penetrate a “lipid bilayer.” After doing so, the double bonds found in many of the “membrane lipids” would be stained just as darkly as the two lines you see (due to oxidation), so that the two lines that are seen should have dark spots between them in many places. The pictures do not show this.
“In the presence of osmic acid the fat is oxidized at the double bonds…” Source: http://food.oregonstate.edu/ref/bake/jooste/test.html When well-respected British scientist Harold Hillman looked into when basic experiments were done to establish criteria for evaluating the reliability of particular techniques, he discovered that no one could answer: “…the questions of when these confirmatory tests were ever done and where they were published.” And when “he was doing work on nerve cells with microscopist Peter Sartory. To get the best images, they used transmission electron microscopy (EM) and were astonished by what they saw. “We noticed something so peculiar that we really couldn’t’ believe it,” Hillman recalls. “About 80% of the membranes in the cell appeared end-on, [as if the cell had been sliced through its center]. It took Sartory and myself several weeks to realize that it simply wasn’t possible.” Yet that is what virtually all electron micrographs and illustrations in papers and textbooks show. “That was our first shock,” says Hillman. That implied that every electron microscopist was cutting virtually everything in the cell perfectly at right angles.” “According to conventional thinking, cell membranes consist of two layers. In stained EM sections the two layers show as two parallel lines of dark stain, like railroad tracks. But, Hillman observes, however you cut a cell, the two lines are always the same distance apart in the EM image. He draws the analogy of a chef cutting an orange. If he slices it clean through the center, the sliced surface will show a thin rim of peel. If he cuts it with a glancing blow, so that only a small slice is taken off, the peel won’t be cut at right angles—it will show as a much “thicker” rim. Hillman reasons that because the rim is always the same width in EM sections, it cannot represent a thick two-layer membrane. Rather, he believes, it is a single thin membrane stained on both sides. “I have challenged electron microscopists to make a three-dimensional model of any living cell in which this [a membrane appearing to have identical thickness however it is cut] is so. It simply isn’t possible. All the stains they examine them with are heavy metals that deposit on both sides of the membrane, thus any real membrane will appear as two lines.” “ Source: The Scientist 2[14]:5, Jul. 25, 1988 (written by Richard Stevenson).
MattLB’s misunderstanding of the physical structure of the cell most likely will cause him problems in his endeavors. His misunderstanding, however, is not atypical. Popular “health guru” Dr. Nicholas Perricone, for example, correctly points out that oxidized LDL, not normal (or “native”) LDL is the problem in most cases of atherosclerosis. He is also correct to note that the inside of cells is like gelatin or jelly, though the cytoplasm is usually “tougher” towards the outside and “softer” towards the middle. His big mistake is claiming that the “cell wall” is composed of a “lipid bilayer,” which he claims has the structural integrity of a soccer ball (he tells readers to imagine cells as soccer balls filled with jelly). Please, do some independent thinking here. How could fatty acids, only the thickness of two molecules, have that kind of structural integrity? A thin layer of grease is what is being claimed protects the entire cell contents. Absurd is too kind a word for this nonsense. The fact that there are fatty acids on the outside of cells does not mean they are a “wall.” The “jelly” will hold together just fine, because there are actual bonds there. A covalent bond is a bond, an ionic bond is a bond, etc., but the only bond that can exist between the cytokeletal proteins and the phospholipids is the so-called electric double layer, and not hydrophobic “bonds,” due to the charges between groups on the proteins and the “heads” of the phospholipids.
Why does this matter in terms of health? Two reasons, related to the “lipid bilayer theory.” If the jelly needs to be held in, and if fatty acids are doing it, it is claimed that polyunsaturated fatty acids (PUFAs) are needed for “flexibility.” The second claim is that PUFAs are “essential” because your body needs them to make eicosanoids. But the body will make its own eicosanoids from common non-polyunsaturated fatty acids, and this is one of the supposedly beneficial effects of taking low doses of aspirin (via the way it inhibits the COX-2 pathway).
A simple, very inexpensive experiment could be done to validate or refute these claims. Feed a few dogs fresh coconut oil as their only source of fat, and be sure to feed them very well in all other respects (dogs are a good model to compare to humans in this instance, and there are no ethical problems, as there would be for human subjects). If the dogs stiffen up and die, then the claim that cells need “flexibility” would seem to be correct, but of course could be investigated further. If the dogs cannot handle simple stresses, such as cuts and bruises, without bleeding to death or falling apart (literally), then the dogs needed those eicosanoids produced only by PUFAs. That’s it. And if it turns out that the dogs do very well on the coconut diet, then the recent textbooks MattLB and others think so highly of will have to be rewritten, and dietary guidelines will need extensive revision. On some remote Asian islands, the pigs and chickens kept by the people living there were fed coconut scraps, and no other major source of fatty acids. Theses animals, as well as the people (who also ate coconuts as their primary fat source) were extremely healthy, even though they had what in America would be called “high cholesterol.”
Now, over to MattLB’s claims:
MattLB: “In order to form a crystal that can be used to get an X-ray structure, the molecules must be arranged in a regular, ordered fashion. The fact that membrane proteins and phospholipids co-crystalise means they are arranged in such an ordered fashion. I'm saying that ordered structure is as a lipid bilayer, just as in the intact cell.”
He can say what he wants, but the issue is not whether proteins and phospholipids are arranged in an “ordered fashion,” but whether a two molecule thick layer of common fatty acids can hold a cell together. Though this claim is beyond absurd – at least to those who know anything about the forces at work (the only one that could be at work here is the hydrophobic force, which could never withstand the stresses cells endure all the time), science dictates that claims need to be addressed (at least those made by scientists). Harold Hillman did experiments to get to the bottom of the issue, and came to the conclusion that he was dealing with a monolayer (or something that behaved more like a monolayer than a bilayer. The cells he cut at random almost always revealed what looked like parallel lines in the area of the supposed “lipid bilayer.” This is impossible, unless there is one layer that gets stained on both sides, which was his, and other scientists’ conclusion – nothing else makes any sense (though an electric double layer, which behaves like a monolayer in certain respects, is possible). How could cutting done completely at random nearly always yield perfect parallel lines? There simply can’t be a “bilayer” as is illustrated in many current textbooks.
“It falls on you to suggest an alternative explanation.”
Wish I could take credit for the work of Ling and many others, but I don’t play that game. In fact, a recent conference was held to discuss the implications of the work of Ling and others. For those interested, here is the information:
“Interfacial Water In Cell Biology”
June 6-11, 2004 Mount Holyoke College South Hadley, MA
Chairs: Gerald H Pollack & Chaim Frenkel
ABSTRACT: A significant fraction of cellular water consists of interfacial water, i.e., water that is confined by or in proximity to macromolecular and other kinds of surfaces. Proximity to interfaces appears to modify the structure and the physical properties of interfacial water, apparently toward higher degree of complexity but an understanding of the structure of interfacial water has, to date, escaped a complete and accepted description.
Because interfacial water may govern many or perhaps all aspects of cellular metabolism and because the physical properties of interfacial water are believed to be different from those of free water, it is of fundamental importance to understand how interfacial water mediates cellular processes. Examples are the role of interfacial water in macromolecular assembly and function, in allosteric regulation of proteins and enzymes, in energy metabolism or selectivity of cellular ion flux, in signal transmission, and in association of macromolecules with one another
[for a complete list of the lectures and lecturers, go to the end of this post – are all these scientists “wackos,” MattLB?]
Source: http://www.grc.uri.edu/programs/2004/intwater.htm
“Fatty acids when in a phospholipid in a membrane bilayer aren't "doing" anything except providing a barrier to molecules.”
Physically impossible, and demonstrating a total lack of understanding of surfactant biochemistry. These lipids are quite “active” (see below). Moreover, the closest to a “lipid bilayer” in the human body is to be found in the lungs, but: “…pulmonary surfactant is primarily a monolayer in the alveolus, separating the minimal water phase from the air and lying almost adjacent to the surface of cells. These monolayers become double in the folds of underinflated alveoli. Stabilisation or a predisposition to folding can be imparted by the presence of proteins in biological surfactant layers.” The proteins are doing the work, and the lipids are not structural, for example: “In the lung, the long-chain phosphatidylcholines are combined with… four proteins… The proteins make roughly 10 percent of the mass and improve surfactant adsorption to the saline-air interface and cells in the alveolus.” Also noteworthy: “Surfactant has a high rate of turnover and is replaced with a half life of about 10 hours.” But because they are unfamiliar with Ling’s hypothesis, they must admit that: “The discussion of Pulmonary Surfactant is readily made complicated, because much remains to be discovered.”
Source: myweb.lsbu.ac.uk/~dirt/museum/surfactant.html
However, interestingly, but not surprisingly, as lipid expert Mary Enig notes, saturated fatty acids are the “essential fatty acids” in lung surfactant: “When it comes to our lungs, the very important phospholipid class called lung surfactant is a special phospholipid with 100 percent saturated fatty acids. It is called dipalmitoyl phosphatidylcholine and there are two saturated palmitic acid molecules attached to it.” http://www.westonaprice.org/know_your_fats/fats_lungs.html All you have to do is look up this phospholipid in a chemistry catalog to confirm her point – no mystery here.
As recently as 1999, in “The Colloidal Domain” by Evans and Wennerstrom, the authors admit that they are making assumptions about a “lipid bilayer:” “The biological membran is a complex structure containing lipids, proteins, and polysaccharides. We adopt the point of view that the lipids provide the basic structural unit.” Page 327. Also worthy or note: “In all organisms except the most primitive ones, the plasma membrane of the cell envelope only represents a small fraction of the total membrane content.” Page 328. They do nothing to explain exactly how this “structural unit” could withstand the stresses that cells endure (and they cite no references). And they note that “lipid bilayer membranes” can be as much as 75% protein: “A biological membrane consists of anywhere between25 and 75% w/w lipid. The remaining 75 to 25% is protein, glycoprotein, or lipoprotein.” Here again, claims that the lipids can “hold the cell together” are RIDICULOUS – if a cell membrane is composed of 75% non-lipids, how in the world could you even imagine a two molecule thick layer of fatty acids in the other 25% being able to hold the aqueous water inside – do you realize what kinds of pressure would be exerted on those fatty acids, even when just “doing nothing?” Considering the fact that some sort of chemical bond is necessary to even begin to talk of a structural role for something, and the phospholipids are not said to be bonded to each other, how much sillier can this get? The fatty acids just get pushed out of the cell by the highly organized water molecules, which are adsorbed to the cytoskeletal proteins. There, an electric double layer can be formed which can include the phospholipids, as well as other molecules. The study you cited, in fact, supports this view.
What is interesting in “The Colloidal Domain” book is that they talk about how important electron microscopy and other techniques are for determining such structures: “Several microscopy techniques provide direct visualization of bilayer structures.” Page 313. But then they say, “We cannot obtain direct structural dimensions with such small objects because the images are enlarged by diffraction. However, we can see real-time behavior and obtain some feeling for the dynamics of such structures.” Also page 313. This would explain why some claims make sense (see below) whereas others, especially the structural claim for “lipid bilayers” are unbelievably absurd. The authors provide a video-enhanced microscopy (VEM) image of a “double-chain ionic surfactant sample” and note that it: “…confirms the tendency of most bilayers to be curved back on themselves, eliminating any exposed bilayer hydrocarbon edges.” Page 313, illustration on page 314. No images of biological “lipid bilayers” are provided by these authors, but what you see in the page 314 illustration are basically a bunch of soap bubbles. Now they are very pretty, but have no structural integrity in a “cell wall” context. The only structure known that is consistent with all the data is an electric double layer, and in this case that would mean one layer of lipids bound to the proteins on the outskirts of the cell (this is the Stern layer), and then other substances beyond this layer (outside the cell) can bind and detach depending upon exact conditions (see the Myers book, mentioned below).
As for Gilbert Ling, he says he will take on all comers, so why not present your claims against his hypothesis (you can email him) – isn’t that what scientists are supposed to do. I don’t know what your credentials are, but he, and many who support his hypothesis have impressive scientific credentials (if you do a google search on him, you will find several of these scientists who support his hypothesis), and they are willing to debate their claims, unlike those such as yourself, who talk about what is in a textbook (or quote useless or equivocal studies), instead of explaining exactly how your notion works and providing experimental data to support it. Why not write a paper against the A-I hypothesis? Two of Ling’s grad students did in the 1970s, and it turns out they were wrong, so if it’s so easy, why not quickly type up a few pages and submit it to a journal? You’ll be famous. In the meantime, I would suggest instead that you start with the basics – read the works of Bungenberg de Jong and K. Mysels.
Scientists who are true to their calling look at what the evidence as a whole suggests (and they quote an establishing source if they claim that an issue is settled, so that there is a base that can be built upon, if it’s worthy – do you realize how flawed the Burr and Burr experiment of 1929/1930 that supposedly established the “essentiality” of PUFAs actually is? It wasn’t even done on humans, for goodness sake!!). I’m not making the outstanding claim that Mead acid is “essential.” I’m pointing out what is known by all: arachidonic acid and other HUFAs derived from PUFAs are much more potent than the signaling molecules derived from Mead acid. Since the evidence for a major, if not determining role, for COX 2 (PG E2 especially) and Leukotriene B4 in cancer, etc. is overwhelming, one could just avoid this whole problem by eliminating all but trace amounts of PUFAs from the diet (as HUFAs from omega 3 PUFAs are similarly too potent and toxic). Since there is no overwhelming body of evidence demonstrating anything derived from Mead acid will do this kind of harm, and since it is known by all that Mead acid is more stable and produces less potent metabolites, basic, non-scientific common sense tells one to follow up this line of thought to see if being “essential fatty acid deficient” is or is not the best state of affairs for a human. At this point it appears to be, and since you have to eat something now, avoiding PUFAs in large quantities, so that Mead acid is the dominant stressor-induced fatty acid, seems the wisest course of action by an order of magnitude.
In order for a claim to be a “scientific theory” there must be no strong evidence against it. Ling points to several problems one finds in the textbook claims about the lipid bilayer that cannot be resolved, and I notice that you, apparently not wanting to do science, feel you must attack his notions, without looking at it from the other side. For example, Ling notes that: “…a cell assembly without functional cell membrane (and postulated sodium pump) maintains a steady low sodium-ion concentration like its normal intact counterpart.” This is impossible according the pabulum being fed to students these days. And there are several other examples. It may be that no hypothesis is worthy of being called a “theory” at this point in time, but at least Ling calls his claim a hypothesis, not a theory. THERE IS NO LIPID BILAYER THEORY at this point, because there is credible experimental evidence (as well as common sense, particularly from the structural point of view) against it. Until Ling’s hypothesis is addressed in detail, one can’t say there is a “lipid bilayer theory” and be true to the underlying principles of science.
Towards my point, Ling notes: “Everybody knows what a raw hamburger is like. From its rich water content, it resembles a wet sponge. Yet it is also quite different from a wet sponge. Squeeze a wet sponge, water comes out. Squeeze harder, more water comes out until finally the sponge becomes almost dry. If instead, you take a raw hamburger and try to squeeze the water out from this water-rich material, you will find that it is well nigh impossible to squeeze any water out even after the meat has been chopped into tiny pieces. Indeed we carried on this line of inquiry in a more rigorously controlled manner. “Thus instead of squeezing the cut-up muscle by hand, we utilized centrifugation. As you know, it is by means of centrifugation, that water is extracted from wet laundry in a washing machine. Only in the muscle experiment, we made sure that every muscle cell had been cut into short segments with both ends open---which do not regenerate a new membrane, see linked page, lp6a{3}--- and subjected them to a centrifugal force of 1000 times gravity. Thus after centrifuging for 4 minutes, all the water found in between the muscle cells are completely extracted. Yet water from the inside the broken cells remains inside the cells (See Ling and Walton in Science, Volume 191, pp.293-295, 1976). “So this exceedingly simple experiment adds yet another set of evidence showing without ambiguity that the basic tenet of free water in membrane-pump theory is wrong. The cell water cannot be normal liquid water. Were the cell water truly normal liquid water, it would have been extracted along with the indisputably normal liquid water (held in between the muscle cells), which is quantitatively squeezed out. What remains would be nothing more than dried proteins like a fully-squeezed out sponge. But that does not happen while the cells are still alive or close to being alive.”
If a living human cell is physically equivalent to a bag of water enclosed by a two molecule thick wall of fatty acids (with a few proteins sticking out here and there), it would not have this kind of structural integrity. Period, there is no way around this point, unless you want to be fitted with that strange white suit that ties up your arms behind your the back. And that means that PUFAs have no place in the “cell membrane” (with the Mead acid exception – this the body does naturally, because it is necessary to deal with certain stresses) because they are too susceptible to lipid peroxidation under common in vivo conditions, and their metabolites are cytotoxic. Fatty acids simply cannot have a structural role, as the “lipid bilayer theory” posits, holding the aqueous cytoplasm inside the cell (much of the water is in the form of polarized multilayers that do not need to be held in by an outer wall because they are bound to the cytoskeletal proteins, as the hamburger example demonstrates – some “free water” exists in a central vacuole). Other points concerning his hypothesis are not of as much interest to me, as they don’t have a role in the diet/health connection, at least not to the degree that this point does, but to answer:
“Why would hydrophobic properties push them to the cell's surface when there is far more free water outside the cell than inside?”
It’s called adsorption of surfactants at interfaces. You need to read http://216.239.41.104/search?q=cache:cXi3YZhC_OAJ:www.chm.bris.ac.uk/pt/eastoe/c hapters%2520oct%25202003/2%2520Aggregation%2520and%2520adsorption%2520at%2520int erfaces.pdf+Adsorption+at+interfaces&hl=en
The hydrophobic effect is spontaneous, as is described on this web site. There is a net inward pull by the water, which is in polarized multilayers, so the phospholipids stay bound to the cell, packed tightly, actually (though if there were “pumps” the phospholipids would interfere with them). If you take some time and read it, you’ll realize that the water is, in a sense, holding the phospholipids to it, not the other way around (i.e., the water molecules are not being “held in” by the phospholipids). As they say, “…adsorption is a dynamic equilibrium with surfactant molecules perpetually arriving at, and leaving, the surface.” This is consistent with the study you cited, which states: “An individual lipid molecule will remain in the annular shell around a protein for only a short period of time…” (Biochim Biophys Acta. 2003 May 2;1612(1):1-40). So again, the common textbook model is a total joke, especially in the structural sense. You yourself mentioned the role of the cytoskeletal proteins, and the only thing you seem unaware of (and unwilling to accept) is the polarized water, which makes a “lipid bilayer” unnecessary (and actually impossible) structurally. And even Perricone, no intellectual heavyweight as far as I can tell, knows this.
The health implications are: Outside the cell, if the outer shell, or “membrane,” is packed with phospholipids high in SFAs and MUFAs, they will be very resistant to free radical damage, whereas PUFAs here will often get peroxidized (doing damage to crucial cellular components – mitochondria, DNA, etc.), especially as people age and in the absence of plenty of the right dietary antioxidants.
And when one discounts completely the energy needs of “pumps,” as you have done with the statement: “The differences between potassium and sodium channels are due to differences in free energy change in losing their solvation shell i.e. potassium does, sodium doesn't, when faced with a potassium channel. [Once again, where is your evidence for this, or are you some sort of science god who demands not to be questioned?] Ergo, discrete channels *are* possible (and other examples exist)…” the problem is that the cell membrane would be covered in these discrete pumps, because of so many different molecules that need to be pumped in and out every minute, and there would be no room for much of a “lipid bilayer” then, so the “theory,” in a way, violates itself (because what would be the point in arguing that a few phospholipids here and there are holding the cell together – that clearly makes no sense). Cells could not look as they actually do. And as Ling notes, this does not explain how pumps could exist for molecules that have been recently synthesized by humankind in a lab.
You conveniently omitted Ling’s statement that your point does “makes the dog hole-cat hole criticism less pressing” (http://www.gilbertling.org/lp16.htm). As he points out there: “In 1953 I introduced the idea that fixed ionic sites on the cell surface could offer a basic mechanism for the selective permeability of one ion (e.g., potassium ion) over another (e.g., sodium ion). This seminal idea was further elaborated in years following as part of the AI Hypothesis (for details see linked page lp16a): The selective permeability of potassium/sodium ion through cell membranes is achieved here not by diameters of membrane pores, but by the presence of fixed negatively charged groups on which the potassium or sodium ion must first adsorb before entering or leaving the cell. If the fixed negatively charged group selectively adsorbs potassium ion, that passage will admit mostly potassium and less sodium. On the other hand, if the charged group selectively adsorbs sodium ion, that passage will be admitting mostly sodium ion and less potassium ion (see Ling, J. Gen. Physiol.43:149, 1960). In this model, neither path is allowing only one kind of ion to go through. Only the relative probability of going through differs. This is in harmony with the finding of Chandler and Meves cited above.”
So you chose one element that works in both hypotheses, and claim that it refutes all the other points that Ling makes, even though it is the “lipid bilayer theory” that is actually full of holes (couldn’t resist that pun). Anyone who knows a modicum about science knows that two hypotheses often account for some overlapping phenomena. What you have done demonstrates a lack of integrity, or a gross ignorance of science, though it does seem that most “scientists” these days lack an understanding of scientific methodology, at least in some ways. Perhaps you are just part of this unfortunate historical development. Poor you.
A common claim made in textbooks: “Cells are basically sacs of water surrounded by an oil membrane…” is beyond ridiculous, and Ling demonstrates this, regardless of the fate of his A-I hypothesis in all its detail. The sack would not allow enough molecules in and out, as is required, nor does it have the structural integrity (and of course it is refuted by simple experiments). On the other hand, having pumps that could get the job done would mean a cell with so many pumps that there would be little room for the fatty acids that are supposedly holding the aqueous water inside. And what is supplying the energy for all this “pumping?” You make cells sound like sets for pornographic films.
An interesting experiment (that has been done – see “Life at the cell and below-cell level for details) involves cutting open a cell and letting the contents drain into a water solution. What you see are a bunch of spherical objects form out of the cytoplasm as it slides into the water. According to the lipid bilayer theory, the cytoplasm is regenerating a cell membrane, which is supposed to consist of the phospholipids. However, so many small objects are formed that the number of phospholipids needed to cover all the surface area of the new “membranes” was never present in the original cell! And it goes on and on – the number of obvious reasons why the “lipid bilayer theory” is nothing but a bad joke seems endless at times.
An early experiment in attempting to determine the age of the earth was heating up a spherical rock and noting how long it took to cool down, then extrapolating for the size difference. Why not do the same thing for your cell model. Try to create a bag of water enclosed by a wall of fatty acids – use as many fatty acids as you like – don’t worry about those precious pumps – use a scaffolding material of your choice to mimic the cytoskeletal proteins. Of course, you’ve got to use the fatty acids commonly found in human cells, in a mostly non-oxidized form. See what happens. Your hands will be quite greasy, and there will be a large puddle of water on your floor (Bungenberg de Jong makes a similar point in his book). Beyond that, you will have accomplished nothing, aside from demonstrating how ABSURD this “theory” is.
As biochemist Ray Peat has noted: “The standard doctrine about the structure of the membrane is that it is a lipid bilayer, meaning that an outer layer of fat (phospholipid) is arranged with its acidic water-soluble end turned outward toward the watery environment, and its fatty water-repellent tail turned inward, against the fatty tail of another layer of molecules, which has its acidic end turned inward, toward the supposedly watery cytoplasm. In support of this arrangement, an "oil loving" stain is applied to hardened cells (otherwise no membrane can be seen under the electron microscope), and a double line appears near the cell's surface. This is called the "lipid bilayer." However, since the theory says that the fatty parts of the two layers are pressed against each other, there is in the theory a continuous band of fat, separating two layers made up of the acidic heads of the molecules, and the theoretical structure of the "lipid bilayer" has no resemblance to the double line that is created by the stain. The material generally used to produce the image of a bilayer membrane is osmic acid, an oxidant; it wouldn't be expected to stain the layers of acidic heads of fat molecules. This might seem to be an embarrassing inconsistency, but apparently not to most scientists. After the electron microscope began making pictures of cells, it took some time to find the stain that would produce any membrane at all, and then it took about thirty years to learn to produce a "membrane" image that had a thickness that seemed appropriate for the theory. Considering the great effort required to produce a "membrane" image of the right size in the right location, they are willing to overlook the fact that the fat-loving stain hasn't quite found its way to the single band of fat between the acidic layers which their theory describes. Gilbert Ling described the boundary at the cell surface as a phase bouundary, of the sort that exists where two different materials meet, for example at an oil-water interface. When the two substances have different electrical-chemical properties, the forces between the phases move electrons and/or molecules near the surface into what is called an electric double-layer. Since stains have their own electrical and chemical properties, the stain molecules would be affected by the fields that produce an electric double-layer. Osmic acid would be expected to stain certain protein groups, including sulfhydryls and amines, which could be exposed in such an area of strong fields. (Brain tissue that is deprived of oxygen stains diffusely with these "membrane" stains, suggesting that proteins are changing shape sufficiently to expose groups of this sort.) The forces between fat molecules, that allow them to form "hydrophobic bonds," are actually so weak that they should hardly be called "bonds," at least at normal temperatures. Fatty surfaces seem to seek each other out in a watery environment because water molecules bind so powerfully to each other that they tend to force out anything that doesn't bind to them. So, if we even consider the association between fat molecules as a "bond," it is the weakest bond that exists between any biological molecules. When a cell is attached to a surface, it can be torn to bits in trying to move it, without breaking its attachment to the surface. Obviously, it isn't attached to the surface by its "lipid bilayer membrane." The strength of a lipid bilayer would be limited by the extremely weak affinity of fat for fat; if you step on a sticky floor wearing tissue-paper slippers, your foot won't be ripped from your leg. A lipid bilayer has no more strength than the rainbow that forms on a puddle of water when a microscopic film of oil spreads over its surface. And the rainbow on the puddle is something that really exists.”
In “Surfaces, Interfaces, and Colloids” (1990), a good explanation of what is likely happening in the “membrane” area is given by Drew Myers (page 81): “When a charged particle (or surface) moves relative to an electrolyte solution, viscosity effects dictate that only that portion of the electric double layer up to (approximately) the Stern layer will move. The ions in the Stern layer will remain with the surface.” Furthermore: “If the film pressure is increased (ie, more molecules per unit area of surface), at some point the particles become fixed in place… and the film behaves as if it is in a condensed state (liquid or solid).” Page 161. And: “…the protein monolayer may even form a substantially rigid and strong gel or ‘skin’ which can be physically removed from the surface as a unit.” Page 171. In this kind of model, PUFAs don’t work: “…cis isomers, due to the inherent curve of the molecule, prevent close packing and produce much more expanded films.” Page 168. The expanded films would never protect cells, and this therefore contradicts MattLB’s claim about “loose packing” (which also was contradicted by the scientific paper he provided that supposedly supported his case – to be addressed below). In general, it seems best to eat fats highest in saturated fatty acids, then your body will make MUFAs and PUFAs when it needs to do so. None of this, of course, is relevant to the fact that “cytoplasm” is mostly water bound the cytoskeletal proteins. If you heat an egg white, at some point a rubbery substance is formed. There is still plenty of water, along with the protein, but no fatty acids. That’s how a cell holds together, regardless of how the lipids on the outer shell of cells are held in place, or what kind of formation possess. Take that rubbery egg white and spread a thin layer of grease on it – is it any stronger? Is it necessary for anything, structurally?
The electron micrographs of cells, supposedly showing the “lipid bilayer” are just one form of artefact (other kinds can be produced), and there is no way to know exactly what interpretation one should come to by looking at it. As Myers states clearly: “While it is reasonably easy to determine the constituents of the biological membrane, elucidating just how the various components are put together, how they interact, and their function within the membrane represents a decidedly more difficult task.” Page 330. The title of chapter three of “Biochemistry and Molecular Biology” by Elliott and Elliott (1997), is: “The cell membrane – a structure depending only on weak forces.” Page 39. How could such a structure withstand incredible shearing forces? That’s impossible in this universe. But Elliott and Elliott provide the answer to how the “membrane” can be structurally sound, when they discuss proteins called mucins: “The mucins form a network of fibres, interacting by noncovalent bonds and resulting in a gel containing more than 90% water that protects intestinal cells [from stomach acid].” Page 63. There it is – a structure that protects, can “keep water out” (since the gel can be very strong and impervious, depending upon the proteins involved), and don’t have various “pumping” problems (as the “lipid bilayer theory” does). I guess using common sense is just too difficult for some “scientists.”
It is undeniable that the textbook model cannot be correct because: “Biological membranes are, like micelles and vesicles, dynamic structure in which lipids and proteins can move about relatively freely…” Page 332, Myers. This is only possible if the water inside the living cell is mostly adsorbed to the cytoskeletal proteins, otherwise the water would “leak out,” though as I have been pointing out, there is no way a two molecule thick layer of common fatty acids could “hold” aqueous water inside a cell in the first place. Also interesting in this book is that if scientists can develop artificial “membranes” similar to biological ones, Myers notes that: “…adding the structural integrity and increased stability of a crosslinked polymeric structure” would be required. Page 330. This is not something that the textbook model of the “lipid bilayer” possesses.
Even the textbooks that talk about the “lipid bilayer” invalidate their own “theory.” For example, in “Biochemistry and Molecular Biology” by Elliott and Elliott (1997), the authors talk of a cell’s cytoskeleton as: “an internal scaffolding that maintains the shape of the cell and is involved in amoeboid motility.” They describe red blood cells as being “always on the move and therefore subject to shearing forces… demanding a robust but flexible cell membrane.” Pages 52 to 53. Yet they show the “lipid bilayer” as essentially a soap bubble (in terms of structural integrity), which we all know has little strength to withstand such forces. Indeed, there is nothing known in nature that suggests that this kind of structure could withstand the forces discussed on pages 52 to 53. If the “lipid bilayer theory” is correct, red blood cells’ “lipid bilayer membranes” would be easily pushed aside by such forces, the supposedly aqueous cytoplasm would spill out, and the cell would cease to exist. As Booij and Bungenberg de Jong pointed out a long time ago in “Biocolloids and their Interactions” (1956): “…water molecules (and ions) would pass the protein structure rapidly; in other words the cell would be like a leaky ship.” Page 139. Only if the elaborate cytoskeleton of the RBCs has water molecules adsorbed to it could such forces be withstood without such leaking. Booij and Bungenberg de Jong did not consider water adsorption, so they were confounded, though they realized that: “The only possibility which is not seriously in conflict with physico-chemical laws seems to be that the lipids are embedded in a rigid framework of proteins.” So take a cue from them, and JUST USE A LITTLE COMMON SENSE HERE, PLEASE!
Not that it would matter, but: “This was known in the early 90s…”
My point here is that you asked for references – where are yours on this point? There are other issues as well, but Ling covers them, and I won’t reiterate them all here, as he addresses them with no problems (his paper on PDF that you can download was written in 1997 – the studies before that do not refute his hypothesis, though I’d like to see you try - if you do, I’d expect the same level of depth and clarity that his claims possess).
“I'm glad you added the ? as I don't know what you mean by that either.”
The question marks in my last post were due to text conversion factors that were out of my control. I’m surprised you could not discern that whenever there was a “?” there should have been an apostrophe – it was fairly obvious. You yourself made numerous typos, as well as errors more egregious than mine – this happens when one is just trying to get it done quickly do to time constraints (for example, I may have said Mead acid was a MUFA, instead of being derived from a MUFA, but I’m always the first to point out my typos in the next posting if I notice them - your error, apparently in reading the study you quoted to support your argument, when in fact it does the opposite, is difficult to understand – see below).
MattLB: “What do mean structural? Is the fat in a doughnut structural?”
This is exactly my point – would you use donuts as foundation bricks for a house? The stresses to which cells are subject are too great to be held together by a think layer of fatty acids, though a paste-like layer of fatty acids and other lipids on the outside of the cell can be excellent protection against lipid peroxidation that can lead to damage to mitochondria, proteins, DNA, etc., as Parassasi and others have shown, which is why saturated fatty acids are best suited for this purpose. I make all kinds of breads from scratch. If I want a tough bread, like an Italian/French bread, I use high-gluten wheat (the protein holds it together), whereas if I want a bread that crumbles easily, I use rice flour (no gluten), but I still use butter and/or coconut oil. I can use eggs to hold bread together (due to the egg protein), and a banana helps a bit (no fat there), but I use fat for the moist, heavy quality it imparts (and because it is much more satisfying than eating a bread high in carbs), not to hold the bread together structurally. Use any common oil with rice flour, water, and baking powder/soda, and see how crumbly it is. This is what I mean by common sense. But if you don’t believe me, let’s go to chemist Arthur E. Grosser’s book “The Cookbook Decoder or Culinary Alchemy Explained” (1981). In it, Grosser explains: “…eggs must be included [in the pound cake] to assume the structure-forming function.” Fat actually can be considered anti-structural: “In Recipe 98, Pie Pastry, fat tenderized the dough by interfering with gluten formation [the union of two different proteins], and so broke down the dough’s cohesiveness.” Both quotes, page 226. So let’s be clear on this point: YOU WERE COMPLETELY, 100% WRONG HERE! But talking food is actually a good idea because, as Grosser explains, water molecules can bind to proteins, or proteins can bind to other proteins, in many common recipes, providing structure. Why not read Grosser’s book with Ling’s hypothesis in mind, and without the preconceptions? If you do, you might actually do some good for humanity at some point with your crystallography work. Otherwise, you’ll just be chasing ghosts thinking that a “lipid bilayer” has structural integrity in the context of “cell membranes.” I’m not questioning whether you were the smartest kid in your High School, but this is about interpreting evidence, not just repeating what the teacher says, as a parrot would do. It’s time for you to think independently and question assumptions. Otherwise, you’ll be like the “experts” we hear all the time telling us how “puzzling” some “disease” is, when the biophysics or the biochemistry is not all that difficult. For example, we hear about how bad “processed food” is, and while there may be several reasons, one appears to be that necessary “primer” molecules, as Ling calls them, are needed for the “turning” mechanism in the present receptor notions. Most people have by now heard of cellular receptors described as a lock and key mechanism, but with such a mechanism, the key must be turned, though there is no explanation for that with mainstream notions. It is truly amazing that not only can’t they generate a simple model that fits the evidence, but they posit a model that actually contradicts it! Ling’s priming molecules explain a great deal of phenomena that are at this point inexplicable with the present notion of receptors and “lipid bilayer membranes.” Buy one of his books and see the tremendous amount of evidence he has amassed to support his claims.
And then you’ve got this: “Unsaturated fatty acid tails prevent extremely close packing of the phopholipids. This makes it easier for membrane proteins to move around through them - compare a hedge to a row of bushes. The even distribution of proteins over the cell surface can be very important and is assured by allowing the free movement of them laterally through the membrane.”
You are assuming the point that is in contention – one of the worst mistakes a scientist can make. The only good thing that can be said for having lots of PUFAs in the “cell membrane” is that if you inhabit very cold waters, the body will be kept from stiffening up, but this would only be of value if you were a salmon, seal, etc., not a human, who would die in a short period of time regardless of how many PUFAs they ate if they were thrown in water below a certain temperature. Do you even know the melt point temperature for SFAs commonly found in humans (palmitic, stearic, or shorter chain)? Perhaps most interestingly, the study you cited in your previous response post contradicts this “loose-packing point” of yours – do you even read the studies you cite? Here is their statement:
“The surface of a membrane protein contains many shallow grooves and protrusions to which the fatty acyl chains of the surrounding lipids conform to provide tight packing into the membrane.” From: Biochim Biophys Acta. 2003 May 2;1612(1):1-40. Lipid-protein interactions in biological membranes: a structural perspective. Lee AG. Division of Biochemistry and Molecular Biology, School of Biological Sciences, University of Southampton, Bassett Crescent East, SO16 7PX, Southampton, UK. agl@soton.ac.uk
It’s clear that fatty acids adhere to cells tightly, but don’t stay bound for long, due to forces and conditions that are difficult for the human mind to imagine. This is why experiments are done, otherwise we would just assume what appears to be the case, such as the long-held belief that the world is “flat.”
“Membranes that have been exposed to free radical attack are *less* flexible as the proteins and lipids within them become cross-linked. Joints, muscles and skin get stiff with age for the same reasons.”
True enough, but the evidence suggests that Mead acid was meant to be in these important tissues: “FASEB J. 1991 Mar 1;5(3):344-53. Unique fatty acid composition of normal cartilage: discovery of high levels of n-9 eicosatrienoic acid and low levels of n-6 polyunsaturated fatty acids.
Adkisson HD 4th, Risener FS Jr, Zarrinkar PP, Walla MD, Christie WW, Wuthier RE.
Department of Chemistry, University of South Carolina, Columbia 29208.
We report here the finding that normal, young cartilages, in distinction from all other tissues examined, have unusually high levels of n-9 eicosatrienoic (20:3 cis-delta 5,8,11) acid and low levels of n-6 polyunsaturated fatty acids (n-6 PUFA). This pattern is identical to that found in tissues of animals subjected to prolonged depletion of nutritionally essential n-6 polyunsaturated fatty acids (EFA). This apparent deficiency is consistently observed in cartilage of all species so far studied (young chicken, fetal calf, newborn pig, rabbit, and human), even though levels of n-6 PUFA in blood and all other tissues is normal. The n-9 20:3 acid is particularly abundant in phosphatidylethanolamine, phosphatidylinositol, and the free fatty acid fractions from the young cartilage. Several factors appear to contribute to the reduction in n-6 PUFA and the appearance of high levels of the n-9 20:3 acid in cartilage: 1) limited access to nutritional sources of EFA due to the impermeability and avascularity of cartilage, 2) rapid metabolism of n-6 PUFA to prostanoids by chondrocytes, and 3) a unique fatty acid metabolism by cartilage. Evidence is presented that each of these factors contributes. Previously, EFA deficiency has been shown to greatly suppress the inflammatory response of leukocytes and rejection of tissues transplanted into allogeneic recipients. Because eicosanoids, which are derived from EFA, have been implicated in the inflammatory responses associated with arthritic disease, reduction of n-6 PUFA and accumulation of the n-9 20:3 acid in cartilage may be important for maintaining normal cartilage structure.
PMID: 2001795 [PubMed - indexed for MEDLINE]”
So the body is protecting this vital tissue by trying not to allow the Mead acid to be replaced by HUFAs derived from PUFAs, almost always arachidonic acid in the Western diet context, of course, which can cause the “inflammatory disorders” that are so common in countries like the USA these days.
And then you’ve got: “There'd be no inflammatory prostaglandins and the respose to injury/infection would be greatly reduced.”
There would be inflammatory molecules that perform the same function, but not as quickly or as dangerously. You just wouldn’t have the cancer, coronary heart disease, diabetes, etc. Find a study of a few hundred EFAD people who die of cuts. In myself, I’ve seen a drastic difference in the last several months. My cuts heal up so well it’s incredible. No pain, quick healing, no infections. And as I’ve mentioned before, the nosebleeds that occur when I get a head cold don’t have that gushing quality they used to, the bleeding stops quickly, and the scab is rubbery, not like the hard plastic quality they used to have. I’ve had several CBCs done over the last few years (as well as an eco-cardiogram a month ago) and everything is fine. I have not seen any effects of the horrible “essential fatty acid deficiency” nonsense.
And yes, I sometimes use strong language, and the reason is: THAT IS WHAT THE EVIDENCE SUGGESTS. Not because I give a rat’s butt whether Mead acid is better for humans than arachidonic acid or some other HUFA as the dominant stressor-induced fatty acid. Ludicrous, silly, naïve, ridiculous, etc. work well to describe ideas that just don’t meet scientific standards AND also don’t make any sense when the evidence that does exist is viewed as a whole.
“If AA build up due to lack of conversion to prostaglandins it can be cell toxic, yes, but adding exogenous arachidonic acid is not very representative of what happens in the body.”
The problem, as a recent EJCN study points out, is that whether the AA is bound in phospholipids or are converted quickly to metabolite, there is no escaping its extreme cytotoxic qualities. It’s true that in certain conditions, the metabolites of AA are the problem (though they are so readily produced it may not matter much in practice, especially as we age). Interestingly, you don’t seem to realize that your claim can also be said about the study you cited on Mead acid. However, the “reduction in the expression of the cell-cell adhesion molecule, E-cadherin” [from that study] may be totally irrelevant, because if you had Mead acid in you instead of AA, the COX 2 activity that causes cancers related to this effect would not be there. On the other hand, your point is problematic because people are taking inhibitors could lead to its conversion to LOX or other metabolites that may be more dangerous. And then there’s the ease with which AA is converted to metabolites relative to the much less reactive Mead acid. This, along with the overpowering nature of AA’s metabolites, makes it the choice of those who seek punishment. Thank you sir, may I have more arachidonic acid! When you read the scientific literature on AA, one things becomes clear: no matter what your body does with AA does not matter – it is dangerous. Yes, it matters in terms of whether you get cancer, diabetes, heart disease, or whatever but my point is that it is so unstable chemically that it is just a matter of what negative effect it will have on you, not whether or not it will have a dangerous effect. As I’ve posted many times before, just go to www.pubmed.com and do an “arachidonic” search and see what I mean. Make sure you are sitting down when you do it. Note that I’m doing a follow-up post that contains just a small number of studies demonstrating the harm PUFAs derived from diet do (for the most part, not all may be on point, but it’s what I was working on with a lipid peroxidation products research paper).
“How do you know [if Mead acid would be as effective as AA – this is about the kid who supposedly got better with AA supplementation]?”
Nobody does, and I made that point. The experiments that would demonstrate what actually is in the best interests of human physiology have not been done, so we can only go by the evidence available – that’s what science is. You can’t just pull one clinical study about one individual [who has a genetic defect, no less] out and say that it’s all settled. That, again, is LUDICROUS. But the key point is that when viewed as a whole, the evidence supports my point better than any of the alternatives.
The last anti-Mead acid study you cite (and I guess these are the only pieces of evidence you could find, compared to the ones on AA, which could fill up a set of Encyclopedias), begins the abstract with an assumption for which these is no good evidence (one could say, no real evidence at all): “The essential fatty acid deficiency (EFAD) is a metabolic condition related to cancer development.” They must have been smoking something other than tobacco when they pulled that one out of thin air, and where are their references (you asked for mine). Then they talk about: “The possible riskiness of EFA-deprivation…” but where is the evidence. There are all kinds of deprivation syndromes that can produce nasty symptoms, for example, vitamin B 12, that have been well documented. But in this context, the evidence against Mead acid just does not exist, but again, AA comes out looking like an absolute monster under conditions in vivo that will occur, usually by age 40 or so (and often occur earlier). Interestingly, their conclusion could be correct, because if a Mead acid person doesn’t get cancer to begin with, then dousing cancer cells in Mead acid as an in vitro experiment is RIDICULOUS – the results don’t mean anything to actual people, and are just a waste of time and money. The omega 3 HUFA they compared Mead acid to was anti-cancer because it is TOXIC to cancer cells, as it is to normal cells (those extra double carbon bonds). They could have obtained similar results with many other fatty acids that are not considered dangerous by these people, such as the “essential” linoleic acid, which dozens of scientists have pointed out appears to be the cause (in amounts consumed by many if not most Westerners) of the common cancers (except lung).
“Maybe it's the high level of Mead PUFA [in some Eskimos] that's the problem.”
First, which problem are we talking about?, and second, this is certainly possible, though they have diets that are very restricted, as you yourself mentioned, so in and of themselves, they are not definitive evidence in this context, only one area that should be explored further. In the meantime, we all have to eat, so if we want to eat the healthiest foods, we have to look at the evidence in total and make a decision.
Now back to that study: “Levels of linoleic- and dihomo-gamma-linolenic acids were higher in Inuit as compared to Caucasian neonates…” and “Within the Inuit group, a higher intake of marine food was associated with a better neonatal (n-3) status [meaning more omega 3s].” So who knows what is going on here? There may be more lipid peroxidation due to the high linoleic and linolenic levels. It even mentions genetic factors as a possible explanation. And are these particular people especially unhealthy? It was done in 1992, so what kind of diet were they on then? They may have not have been on the diet their ancestors (the ones who bled to death of minor bumps) were consuming. If the majority of our “scientists” were investigating this undeniably promising area, instead of trying to develop drugs that only prolong agony, we would have this all resolved by now.
No more on “trans fat,” except that if it is changed into an SFA, then it will act like an SFA, obviously. But my point about semantics is valid: what you say are saturated fatty acid molecules (derived from oleic acid) are called “trans monounsaturated fatty acids” in a study in the July edition of the European Journal of Clinical Nutirition (vol. 56, # 7). No need to fear this molecule as some sort of Trojan horse molecule – it’s among the healthiest things you can eat! The partially hydrogenated foods are unhealthy because they are like lard, plenty of double bonded carbons on fatty acids and little or no antioxidant protection. Very dangerous, obviously. End of semantics. Experiments attempting to determine how effective herbs and spices are as antioxidants use pork and lard because they are so easily degraded by free radicals. You can’t do this with fresh coconut oil – the experiment would take years instead of hours because it is so saturated. That’s why it is healthy, but because lard, with 39% or so saturated fatty acids, is considered a “saturated fat,” saturated fatty acids get a blanket condemnation. FOOLISH BEYOND BELIEF.
“Familial anecdotes aren't science.”
Certainly true, but we are being told by 99.99% of the “experts” out there (correctly for one of the few times) that Westerners are getting almost no, or no omega 3 PUFAs from their diets (as I said about plenty of people I know), yet they also say that they are “essential,” and this obvious logical inconsistency should be brought to light. Exactly how does one define “essential,” in other words? Notice that it is never defined, or else they say one will get dandruff or dry skin, which, even if true (my hair and skin is better than ever these days, so that seems to be more nonsense), does not compare to what AA does, which is supposedly “essential.” PREPOSTEROUS!!!!
“More unscientific hyperbole. As I said in the last post: essential means "can't be made by the body from scratch", not "you'll rapidly die without it".”
Again, a logical inconsistency. Just because you’re body can’t make something doesn’t mean your body needs it. Can your body make aluminum? Or terpenes? Or squalene? Something like squalene may be helpful, and for some people it may be essential (once they develop a particular “chronic disease”), again depending upon how it is defined, but a claim of absolute essentiality needs strong evidence to support it. Why don’t they just say what the evidence actually suggests? The media may be partly to blame, but then scientists should get together a put out a press release condemning the media’s overstatements.
Your claim that more omega 3s and less omega 6s in the diet is the solution is contradicted by many papers, such as the following:
“Eur J Clin Nutr. 2004 Jul;58(7):1083-1089. Increased alpha-linolenic acid intake lowers C-reactive protein, but has no effect on markers of atherosclerosis.
Bemelmans WJ, Lefrandt JD, Feskens EJ, Haelst Pv P, Broer J, Meyboom-De Jong B, May JF, Tervaert JC, Smit AJ.
[1] 1Department of General Practice, University of Groningen, Groningen, The Netherlands [2] 3Centre for Nutrition and Health, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
OBJECTIVE:: To investigate the effects of increased alpha-linolenic acid (ALA)-intake on intima-media thickness (IMT), oxidized low-density lipoprotein (LDL) antibodies, soluble intercellular adhesion molecule-1 (sICAM-1), C-reactive protein (CRP), and interleukins 6 and 10. DESIGN:: Randomized double-blind placebo-controlled trial. SUBJECTS:: Moderately hypercholesterolaemic men and women (55+/-10 y) with two other cardiovascular risk factors (n=103). INTERVENTION:: Participants were assigned to a margarine enriched with ALA (fatty acid composition 46% LA, 15% ALA) or linoleic acid (LA) (58% LA, 0.3% ALA) for 2 y. RESULTS:: Dietary ALA intake was 2.3 en% among ALA users, and 0.4 en% among LA users. The 2-y progression rate of the mean carotid IMT (ALA and LA: +0.05 mm) and femoral IMT (ALA:+0.05 mm; LA:+0.04 mm) was similar, when adjusted for confounding variables. After 1 and 2 y, ALA users had a lower CRP level than LA users (net differences -0.53 and -0.56 mg/l, respectively, P<0.05). No significant effects were observed in oxidized LDL antibodies, and levels of sICAM-1, interleukins 6 and 10. CONCLUSIONS:: A six-fold increased ALA intake lowers CRP, when compared to a control diet high in LA. The present study found no effects on markers for atherosclerosis. SPONSORSHIP:: The Dutch 'Praeventiefonds'.European Journal of Clinical Nutrition (2004) 58, 1083-1089. doi:10.1038/sj.ejcn.1601938”
In EJCN’s volume 56, supplement 3 (August, 2004), page S-17, there is the following: ”The eicosanoids produced from EPA are often less biologically potent than the analogues synthesized from arachidonic acid (eg LTB5 is only about 10% as potent as LTB4…”
And this is also UNDENIABLY true about Mead acid (i.e., it is even less biologically potent than arachidonic acid than EPA is) except that you can eat a very high SFAs diet (with some MUFAs like oleic, and traces of PUFAs because they are practically unavoidable) and then lipid peroxidation is not a problem. Also, they and many others scientists are on board with my point that a much less potent fatty acid is much healthier, so why do you find the Mead acid so unappealing for this purpose? It would be nice to have more evidence, but the evidence at this point is clear: everything in favor except for a few unrealistic studies (which can be found for just about any substance in the scientific literature). In the study above (Eur J Clin Nutr. 2004 Jul;58(7):1083-1089.), of which there are many others that are similar, demonstrates that omega 3s are not the answer, though a “balance” between omega 3s and omega 6s does seem better than a high omega 6 diet with trace amounts of omega 3s. Why choose between bad and worse, though, when you can have optimal with Mead acid?
“Prhaps you'd be better off recognising that the three fatty acids are precursors for unique sets of molecules. You can't make the prostaglandins that come from arachidonic acid from Mead Acid, so by definition a simple fatty substitution in position 2 will have a far from simple biochemical effect.”
Totally agree – my point exactly (minus the typos). No simple effect, if you consider the effect a virtual elimination of the “chronic diseases” so common these days. You also can’t make AA metabolites from EPA, but because EPA metabolite sometimes have opposing effects, a notion of “balance” dawned on some idiot who was writing a textbook, and now people are dousing themselves in things like the highly dangerous flaxseed oil or cod liver oil. Again, my point is that the evidence suggests, in the strongest possible way, that the metabolites of AA and EPA are far too dangerous for humans (and then there are the highly toxic lipid peoxidation products of dietary PUFAs, such as 4-HNE, which I haven’t even touched upon, but for which there is an extensive scientific literature). There is no comparable body of evidence against Mead acid as the stressor-induced fatty acid in humans (though obviously, dousing cells in a dish with it will create all kinds of irrelevant results – you could call anything “bad” by doing that, even water). However, when you think of many “traditional diets” high in coconut oil or palm kernel oil or olive oil, it is obvious that most, if not almost all early humans were “essential fatty acid deficient.” There were not enough PUFAs overall in those diets to move Mead acid out of its role as dominant stressor-induced fatty acid, and the study above about the crucial tissues that preserve Mead acid are more evidence to this point. The claim made so often by the “experts” in the mainstream media, it should be noted, regarding endogenous PUFA synthesis (in humans) is completely wrong, because Mead acid is a PUFA, and can be made by humans. It is a matter of which of the three possible HUFAs is best as the predominant stressor-induced fatty acid in phopholipids. We may never know for sure, because the correct experiments need to be done, but according to the anthropologists, the kinds of diets early humans consumed would lead to this “EFAD condition.” We would not be here if Mead acid was so unhealthy! And judging from the few people I know who have been “essential fatty acid deficient” (including myself, of course) for a while now the results are great. When I add this to everything known, it’s a “slam dunk” for Mead acid, and an early shower for AA or EPA.
As a final point, www.newscientist.com had this posted on their web site (“Hawking cracks black hole paradox” on July 14, 2004): “After nearly 30 years of arguing that a black hole destroys everything that falls into it, Stephen Hawking is saying he was wrong. It seems that black holes may after all allow information within them to escape.”
Why biologists and others involved with diet and health issues don’t have the integrity Hawking does (and he is almost worshipped by many as a new Einstein) is another story, but less important for those who understand what I have posted above, and are willing to act upon it.
The above was written by the author of four books, the first two of which were published in 2001, and only differed by two pages, the last of the four (which was the only work of fiction published) being published in 2004.
[Schedule of the conference mentioned above: SUNDAY 2:00 pm - 9:00 pm Arrival and Check-in 6:00 pm Dinner 7:30 pm - 9:30 pm CONTROVERSIAL HISTORY OF BIOLOGICAL WATER: VOICE OF THE PROTAGONISTS Discussion Leader: Phillip Ball, Nature, London, UK Walter Drost-Hansen, University of Miami, Coral Gables, FL "From vicinal hydration of biopolymers to cell function" Gilbert Ling, Damadian Foundation, Melville, NY "The Polarized Multilayer (PM) theory of protoplasmic water in living cells" MONDAY 7:30 am - 8:30 am Breakfast 8:45 am Photo 9:00 am - 12:30 pm PHYSICAL CHEMISTRY OF WATER AT BIOLOGICAL INTERFACES Discussion Leader: Chaim Frenkel, Rutgers University Elaine Zhu, Harvard University, Cambridge MA "How water meets a hydrophobic surface" Jacob Israelachvili, UC Santa Barbara "Measurements of hydrophobic forces" Martin Chaplin, South Bank University, London, UK "Does water clustering determine biological structure?" Gerald Pollack, Univ. of Washington, Seattle "Solute behavior in the vicinity of hydrophilic surfaces" 12:30 pm Lunch 6:00 pm Dinner 7:30 pm - 9:30 pm INTERACTIONS BETWEEN MACROMOLECULES AND WATER Discussion Leader: Martin Chaplin, South Bank University, London Judith Herzfeld, Brandeis University, Waltham, Mass "Crowding-induced order in cells" Daryl Eggers, San Jose State University, San Jose, CA "Influence of interfacial water on protein folding equilibria in crowded environments" Teresa Head-Gordon, UC Berkeley, Berkeley, CA "Hydration dynamics near a model protein surface: Implications for protein function and protein- protein assembly" TUESDAY 7:30 am - 8:30 am Breakfast 9:00 am - 12:30 pm BEHAVIOR OF WATER IN THE PRESENCE OF SOLUTES AT EXTREMELY LOW CONCENTRATION Discussion Leader: Pascale Mentre, Universite Pierre et Marie Curie, Paris, France Jacques Benveniste, DigiBio, Clamart, France "Role of water in the transmission of molecular signals" Yolene Thomas, CNRS, Saint Cloud Cedex, France "Activation of human neutrophils by electronically transmitted phorbol-myristate acetate" Mae-wan Ho, Director, Institute of Science in Society "The cell as a liquid crystal" Shiimon Mizrahi, Technion Israel "Water mediated cosolutes effects on gels swelling and osmotic pressure of polymers" 12:30 pm Lunch 6:00 pm Dinner 7:30 pm - 9:30 pm BASIC BIOPHYSICAL PROCESSES INVOLVING WATER Discussion leader: Miklos Kellermayer, Univ of Pecs, Hungary James Clegg, Univ of Cal., Davis, CA Anhydrobiosis (life without water) reveals the essential functions of intracellular water Vladimir Voeikov, Moscow State University, Russia "Self-organizing nature of oxygen radical-dependent processes in aqueous systems" Denys Wheatley, Univ. of Aberdeen, U. K. "Metabolic control: diffusion, convection and encounter frequencies on cytoplasmic surfaces" WEDNESDAY 7:30 am - 8:30 am Breakfast 9:00 am - 12:30 pm BEHAVIOR OF SOLUTES IN INTERFACIAL WATER Discussion leader: John Sheehan, University of North Carolina Norio Ise, Kyoto University, Japan "When does like like like? -- Structure formation of macro-ions in solutions" David Weitz, Harvard University, Cambridge MA "Aqueous gels and networks: Mechano-properties and mechano-sensing" Guenter Albrecht-Buehler, Northwestern Univ., Chicago, IL "Water structuring centers of mammalian cell surfaces" Ludwig Edelmann, Saarland University, Homburg/Saar, Germany "Electron microscopic detection of potassium and water association at cellular proteins" 12:30 pm Lunch 6:00 pm Dinner 7:30 pm - 9:30 pm ROLE OF INTERFACIAL WATER IN CYTOSKELETAL PROCESSES Discussion leader: Carlton Hazlewood, President, PetroClean, L.L.C., and Research Consultants, International Ivan Cameron, University of Texas, San Antonio, TX "Water: Biology's forgotten molecule" Dan Urry, Univ. of Minnesota, Twin Cities, MN "The fundamental role of differentiated water structure in protein structure and function" Frank Mayer, Univ. of Goettingen, Germany "Interfacial Water: determinants for cell architecture and cell function" THURSDAY 7:30 am - 8:30 am Breakfast 9:00 am - 12:30 pm ROLE OF INTERFACIAL WATER IN BIOLOGICAL PROCESSES Discussion Leader: James Clegg, Univ. of California, Davis. Virginia Shepherd, University of New South Wales, Sydney, Australia "Plant cells through the looking glass: Alternative interpretations of cytoplasmic structure and electrophysiology" Reuven Tirosh, Bar Ilan University, Ramat Gan, Israel "Ballistic protons, water solitons, and bioenergetics" Sasha Safronov, Ural State University, Ekaterineburg, Russia "Hydration in synthetic polyelectrolyte gels. Electrochemical potential and enthalpy of swelling" Fabio Bruni, University of Rome "The glassy state of water in model and real systems: Is it biologically useful?" 12:30 pm Lunch 6:00 pm Dinner 7:30 pm - 9:30 pm ROLE OF WATER IN BIOMATERIALS AND GELS Discussion leader: Jacob Israelachvili, UC Santa Barbara Erwin Vogler, Pennsylvania State University, University Park, PA "Role of water in protein adsorption/assembly at interfaces" Hans Griesser, University of South Australia, Adelaide, Australia "Characterization of hydrated layers by colloid atomic force microscopy" Allan Hoffman, University of Washington, Seattle, WA "The role of water in PEGylated 'non-fouling' surfaces"]
Wolfbrother - 15 Oct 2004 06:01 GMT Great post! If a bit long. It is too bad that most of the people here who are in desperate need of a reality check will probably not read it because of its length. Your views on what science and its methods and theories are and should be are right on the mark and something one would think should be common sense to anyone yet I am always amazed that it is not.
Also when it comes to PUFAs it should also be common sense that it is absolutely unnatural to consume them in the large amounts people do in our modern society. All you have to do is look at food consumption data and see that such oils were almost non existent not long ago and their EXTREME rise in consumption (something like 3000% rise or more in the last 100 years) is greatly associated with the rise in many of our modern diseases that were also almost non existent before the use of these polyunsaturated oils. What is worse is the foods that ARE blamed for these new diseases are mostly healthy foods that have existed in the human diet for millions of years. Now as if that was not bad enough, these polyunsaturated oils are then held up as the cure/prevention of the very conditions that they cause. And it is all for money. A very sick world we live in. But a profitable one too. LOL
Larry Hoover - 15 Oct 2004 17:10 GMT > Also when it comes to PUFAs it should also be common sense that it is > absolutely unnatural to consume them in the large amounts people do in > our modern society. Nothing could be further from the truth, unless you limit your remarks to a single class of PUFAs, the omega-6 polyunsaturated fatty acids.
Lar
GMCarter - 15 Oct 2004 11:56 GMT >This post is in response to MattLB and Mr. Carter, but it is for those >with an open mind. Well, I did review your article briefly. There's no way I'm going to take the time to pick it apart. But suffice it to say, I did not find a convincing rejection of either the lipid bilayer model of cell membranes, let alone a rejection of the HIV disease data.
Viruses come in all forms but to say that none have lipid bilayers is incorrect. It may be consistent with your view of the science but I think the overwhelming evidence supports that such membranes exist, are well characterized and hence are indeed found as integral parts of many viruses, including HIV.
Membrane chemistry is complex and the data on pores, proteins, receptors and so forth are equally enormous.
I have no trouble with science being challenged and questions being raised. But convincing alternative theories must be established. You mention work of Ling in passing but provide no background and I am unfamiliar with his (?) work.
Finally, the notion that all PUFAs are bad is a generalization that makes virtually no sense whatsoever. It lumps omega-3 and omega-6 and omega-9 PUFAs in the same category and seems to act as if fully saturated fatty acids are just peachy keen.
Sorry, I just don't buy your theories.
George M. Carter
montygram - 15 Oct 2004 19:47 GMT > Sorry, I just don't buy your theories. > > George M. Carter If you read the post, you would know that this is not "my theory." I wish it was "my theory," but many others have done the difficult work years ago. Be the frightened ostrich if you want. The evidence is there, right on www.pubmed.com One only needs the time and intelligence to look at it. There was a recent report on sciencedaily.com about how cancer develops that contradicts existing notions (meaning the oncogene stuff), but points to stressors and toxins, and that mean arachidonic acid. It's your funeral, George, not mine, so you can do what you like, but I won't be attending.
Larry Hoover - 15 Oct 2004 20:50 GMT >> Sorry, I just don't buy your theories. >> >> George M. Carter > > If you read the post, you would know that this is not "my theory." I was lucky enough to be spared seeing your original post, as it was too large to be accepted by my ISP. I googled it, just to get a look at it, and lo and behold, your opening sentence itself contains a logical fallacy. "This post is in response to MattLB and Mr. Carter, but it is for those with an open mind."
> Be the frightened ostrich if you want. Puh-lease. Ad hominem remarks, in place of argument? Tell you what, monty, you go get that article published somewhere. Go on, I dare you to submit it.
Lar
montygram - 17 Oct 2004 04:20 GMT "Tell you what, monty,
> you go get that article published somewhere. Go on, I dare you to submit it." I wish I could do that, Larry, but it’s already been done, and I’m not into plagiarism. For example:
Adkisson, H.D., Tranik,T.M., & Wuthier,R.E. Relationship of cartilage Mead acid levels to aging and development of osteoarthritis. Poster Presentation at the Third International Conference on Essential Fatty Acids and Eicosanoids, Adelaide, Australia March 1 1992 “…Young cartilage is characterised by the presence of high levels of 20:9 w-9, Mead acid, indicating a relative deficiency of EFA. Skeletal muscle from the same subjects showed normal EFA levels, and no Mead acid. Age decreases the Mead acid level and increases the EFA level, with weight-bearing cartilage having more EFA and less Mead acid than costal tissues. Cartilage from osteoarthritis affected joints showed even lower Mead acid levels and even higher w-6 EFA levels, leading the authors to speculate that accumulation of w-6 EFAs in cartilage might predispose towards the development of OA, and that the presence of Mead acid might somehow be protective.”
Or:
J Exp Med. 1993 Dec 1;178(6):2261-5. Effect of dietary supplementation with n-9 eicosatrienoic acid on leukotriene B4 synthesis in rats: a novel approach to inhibition of eicosanoid synthesis.
James MJ, Gibson RA, Neumann MA, Cleland LG.
Rheumatology Unit, Royal Adelaide Hospital, Adelaide, South Australia.
“…Because ETrA is substantially less unsaturated than EPA, it can be expected to have greater chemical stability, which could be an important practical advantage when used as a dietary constituent or supplement.”
Or:
FASEB J. 1991 Mar 1;5(3):344-53. Unique fatty acid composition of normal cartilage: discovery of high levels of n-9 eicosatrienoic acid and low levels of n-6 polyunsaturated fatty acids.
Adkisson HD 4th, Risener FS Jr, Zarrinkar PP, Walla MD, Christie WW, Wuthier RE.
Department of Chemistry, University of South Carolina, Columbia 29208.
“…EFA deficiency has been shown to greatly suppress the inflammatory response of leukocytes and rejection of tissues transplanted into allogeneic recipients. Because eicosanoids, which are derived from EFA, have been implicated in the inflammatory responses associated with arthritic disease, reduction of n-6 PUFA and accumulation of the n-9 20:3 acid in cartilage may be important for maintaining normal cartilage structure.”
Or:
Prostaglandins Leukot Essent Fatty Acids. 1998 Dec;59(6):371-7. Eicosatrienoic acid (20:3 n-9) inhibits the expression of E-cadherin and desmoglein in human squamous cell carcinoma in vitro.
Eynard AR, Jiang WG, Mansel RE.
Instituto de Biologia Celular, Facultad de Ciencias Medicas, Universidad Nacional de Cordoba, Argentina. aeynard@cmefcm.uncor.edu
Eicosatrienoic acid (ETA 5,8,11, n-9) is abnormally increased by essential fatty acid deficiency (EFAD), a condition associated with alterations of cell proliferation and differentiation. In comparison to certain EFAs, addition of ETA at a low concentration resulted in a reduction in the expression of the cell-cell adhesion molecule, E-cadherin, and to a lesser degree, of desmoglein, along with increased invasion of Matrigel by human squamous cell carcinoma (SCC) cells in vitro. At higher concentrations, ETA stimulated the growth of SCC cells. As previously shown, n-6 EFAs (mainly 18:3 n-6, GLA), up-regulated the expression of E-cadherin and desmoglein. This is the first report showing that the abnormal 20:3 n-9 (Mead's acid) is a down regulator of antimetastatic E-cadherin and desmoglein expression.
Or:
Lipids. 1997 Sep;32(9):979-88. Modulation of adjuvant-induced arthritis by dietary arachidonic acid in essential fatty acid-deficient rats.
Chinn KS, Welsch DJ, Salsgiver WJ, Mehta A, Raz A, Obukowicz MG. “… edema in the primary hind footpads was decreased by 87% in EFAD…”
Or:
Lipids. 1996 Aug;31(8):829-37. Effect of dietary n-9 eicosatrienoic acid on the fatty acid composition of plasma lipid fractions and tissue phospholipids.
“…rats appear to tolerate high levels of dietary ETrA without adverse effects. Dietary enrichment with ETrA warrants further investigation for possible beneficial effects in models of inflammation and autoimmunity, as well as in other conditions in which mediators derived from n-6 fatty acids can affect homeostasis adversely.”
The negative scientific papers on arachidonic acid, as well as fish oil and flax oil, have nearly filled up my hard drive, so you can do your own research on those. Even you, Larry, can discern how to get to www.pubmed.com, type in arachidonic, and hit the enter key.
The question those with an open mind are probably asking themselves is, “why aren’t there a bunch of studies in humans being conducted now?” If you know the story of Lincoln’s doctors, then you know the answer. The powers that be are politicians more than anything else (they just put their name on the studies that others do, and the studies are often statistical, with incorrect initial assumptions – read “Heart Failure,” by Thomas Moore, for an in depth account of this phenomenon). I’ve done the experiment on myself – well over three years on a very low polyunsaturate diet, and the results are outstanding. Rosacea, which I’ve had for over a decade, is gone. Wounds head faster, with almost no inflammation. Scabs are soft and rubbery, not hard (which has implication for blood clots that lead to heart attacks and strokes). Hair feels thicker and never gets that greasy quality. Strains don’t hurt much at all.
Lincoln’s doctors were out of touch with the latest knowledge on head wounds. They poked around in his brain. Battlefield surgeon knew that such a wound should be left alone, otherwise serious brain damage could be done by the doctor. This is very similar to the current situation. There are plenty of scientists doing good research, and they get published, write newsletters and books, etc., but only the connected people, who usually don’t actually do their own research, get their papers into Science, Nature, Lancet, or JAMA, and those are the journals your local doctor reads, if he reads much of anything at all.
And isn't it interesting that I'm the one posting all the supporting evidnece, and those who attack me call me "bonehead" and such, and yet have not evidence, except perhaps for that ridiculous 1930 Burr & Burr study on rats, in which the rats were deprived of B vitamins, among other vital nutrients. Larry, you make it clear to anyone with a bit of gray matter between their ears who's got the evidence and who is just an incompetent masquarading as a "scientist."
Larry Hoover - 17 Oct 2004 18:10 GMT > "Tell you what, monty, >> you go get that article published somewhere. Go on, I dare you to submit >> it." > > I wish I could do that, Larry, but it’s already been done, and > I’m not into plagiarism. Review articles only require that proper attribution is employed. That's what references are.
> Larry, you make it clear to anyone with a bit > of gray matter between their ears who's got the evidence and who is > just an incompetent masquarading as a "scientist." You have learned a little bit about research, since you came here with one abstract about a South Pacific island, that was thirty years old.
You have consistently failed to address the research I have used to counter your {I hesitate to even use the word} arguments. I don't need to rely on ad hominem remarks and prejudical language to make my points.
The fallacy of prejuducial argument: This fallacy could also be called the "appeal to shame." It refers to the attempt to establish a proposition through use of emotionally-charged language. Most commonly, this takes the form of language which implies that those who oppose the argument presented thereby evidence mental defect, ignorance, laziness, wrong motives or evil character.
Lar
montygram - 18 Oct 2004 04:24 GMT Larry, I blew the ludicrous studies you cited out of the water (like the one on diabetes). I just cited plenty of papers, and there are plenty more, but I'm going to wait for you to cite your best evidence here before I waster any more time on you. Actually, I hope you keep your mind closed and keep eating plenty of PUFAs - you'll then get exactly what you deserve.
> > "Tell you what, monty, > >> you go get that article published somewhere. Go on, I dare you to submit [quoted text clipped - 25 lines] > > Lar |
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