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Medical Forum / Diseases and Disorders / Diabetes / May 2008

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Type 2 may be a disorder of the upper intestine?

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Robert Miles - 05 Mar 2008 20:15 GMT
An article suggesting type 2 diabetes may be a disorder of the
upper small intestine:

http://www.sciencedaily.com/releases/2008/03/080305113659.htm
just@looking - 05 Mar 2008 21:25 GMT
http://www.sciencedaily.com/releases/2008/03/080305113659.htm

When the upper gut is bypassed there is a large increase in the incretin
glp-1 which is found in higher levels from the l cells of the lower
smallgut and large gut.  Glp-1 works like the drug byetta which prompts
insulin release when glucose levels rise.

Large increases in glp-1 have been measured in bypass patients because
food whichprompts glp-1 production has not been largely digested as it
would have been in the upper gut but thrown instead into the area of
densest glp-1 production.  In a very few there is so much that it
produces an insulin created hypo situation.

Also in the upper gut and decreasing along its length and largely absent
in the large gut are d cells which produce somatastatin which is
acounterregulatory hormone for glp-1.  Thus in a bypass patient the area
of the most somatastatin production In the upper gut is also missing.

It seems to me the process the person in the article suggests be found
has in fact already been known and described.
just@looking.com - 05 Mar 2008 21:28 GMT
http://www.sciencedaily.com/releases/2008/03/080305113659.htm

When the upper gut is bypassed there is a large increase in the incretin
glp-1 which is found in higher levels from the l cells of the lower
smallgut and large gut.  Glp-1 works like the drug byetta which prompts
insulin release when glucose levels rise.

Large increases in glp-1 have been measured in bypass patients because
food whichprompts glp-1 production has not been largely digested as it
would have been in the upper gut but thrown instead into the area of
densest glp-1 production.  In a very few there is so much that it
produces an insulin created hypo situation.

Also in the upper gut and decreasing along its length and largely absent
in the large gut are d cells which produce somatastatin which is
acounterregulatory hormone for glp-1.  Thus in a bypass patient the area
of the most somatastatin production In the upper gut is also missing.

It seems to me the process the person in the article suggests be found
has in fact already been known and described.
Andrew B. Chung, MD/PhD - 05 Mar 2008 22:58 GMT
> An article suggesting type 2 diabetes may be a disorder of the
> upper small intestine:
>
> http://www.sciencedaily.com/releases/2008/03/080305113659.htm

From your cite:

ScienceDaily (Mar. 5, 2008) -- Growing evidence shows that surgery may
effectively cure Type 2 diabetes -- an approach that not only may
change the way the disease is treated, but that introduces a new way
of thinking about diabetes.

A new article -- published in a special supplement to the February
issue of Diabetes Care by a leading expert in the emerging field of
diabetes surgery -- points to the small bowel as the possible site of
critical mechanisms for the development of diabetes.

The study's author, Dr. Francesco Rubino of NewYork-Presbyterian
Hospital/Weill Cornell Medical Center, presents scientific evidence on
the mechanisms of diabetes control after surgery. Clinical studies
have shown that procedures that simply restrict the stomach's size
(i.e., gastric banding) improve diabetes only by inducing massive
weight loss. By studying diabetes in animals, Dr. Rubino was the first
to provide scientific evidence that gastrointestinal bypass operations
involving rerouting the gastrointestinal tract (i.e., gastric bypass)
can cause diabetes remission independently of any weight loss, and
even in subjects that are not obese.

"By answering the question of how diabetes surgery works, we may be
answering the question of how diabetes itself works," says Dr. Rubino,
who is a professor in the Department of Surgery at Weill Cornell
Medical College and chief of gastrointestinal metabolic surgery at
NewYork-Presbyterian/Weill Cornell.

Dr. Rubino's prior research has shown that the primary mechanisms by
which gastrointestinal bypass procedures control diabetes specifically
rely on the bypass of the upper small intestine -- the duodenum and
jejunum. This is a key finding that may point to the origins of
diabetes.

"When we bypass the duodenum and jejunum, we are bypassing what may be
the source of the problem," says Dr. Rubino, who is heading up NewYork-
Presbyterian/Weill Cornell's Diabetes Surgery Center.

In fact, it has become increasingly evident that the gastrointestinal
tract plays an important role in energy regulation, and that many gut
hormones are involved in the regulation of sugar metabolism. "It
should not surprise anyone that surgically altering the bowel's
anatomy affects the mechanisms that regulate blood sugar levels,
eventually influencing diabetes," Dr. Rubino says.

While other gastrointestinal operations may cure diabetes as an effect
of changes that improve blood sugar levels, Dr. Rubino's research
findings in animals show that procedures based on a bypass of the
upper intestine may work instead by reversing abnormalities of blood
glucose regulation.

In fact, bypass of the upper small intestine does not improve the
ability of the body to regulate blood sugar levels. "When performed in
subjects who are not diabetic, the bypass of the upper intestine may
even impair the mechanisms that regulate blood levels of glucose,"
says Dr. Rubino. In striking contrast, when nutrients' passage is
diverted from the upper intestine of diabetic patients, diabetes
resolves.

This, he explains, implies that the upper intestine of diabetic
patients may be the site where an abnormal signal is produced,
causing, or at least favoring, the development of the disease.

How exactly the upper intestine is dysfunctional remains to be seen.
Dr. Rubino proposes an original explanation known in the scientific
community as the "anti-incretin theory."

Incretins are gastrointestinal hormones, produced in response to the
transit of nutrients, that boost insulin production. Because an excess
of insulin can determine hypoglycemia (extremely low levels of blood
sugar) -- a life-threatening condition -- Dr. Rubino speculates that the
body has a counter-regulatory mechanism (or "anti-incretin"
mechanism), activated by the same passage of nutrients through the
upper intestine. The latter mechanism would act to decrease both the
secretion and the action of insulin.

"In healthy patients, a correct balance between incretin and anti-
incretin factors maintains normal excursions of sugar levels in the
bloodstream," he explains. "In some individuals, the duodenum and
jejunum may be producing too much of this anti-incretin, thereby
reducing insulin secretion and blocking the action of insulin,
ultimately resulting in Type 2 diabetes."

Indeed, in Type 2 diabetes, cells are resistant to the action of
insulin ("insulin resistance"), while the pancreas is unable to
produce enough insulin to overcome the resistance.

After gastrointestinal bypass procedures, the exclusion of the upper
small intestine from the transit of nutrients may offset the abnormal
production of anti-incretin, thereby resulting in remission of
diabetes.

In order to better understand these mechanisms, and help make the
potential benefits of diabetes surgery more widely available, Dr.
Rubino calls for prioritizing research in diabetes surgery. "Further
research on the exact molecular mechanisms of diabetes, surgical
control of diabetes and the role played by the bowel in the disease
may bring us closer to the cause of diabetes."

Today, most patients with diabetes are not offered a surgical option,
and bariatric surgery is recommended only for those with severe
obesity (a body mass index, or BMI, of greater than 35kg).

"It has become clear, however, that BMI cut-offs can no longer be used
to determine who is an ideal candidate for surgical treatment of
diabetes," says Dr. Rubino.

"There is, in fact, growing evidence that diabetes surgery can be
effective even for patients who are only slightly obese or just
overweight. Clinical trials in this field are therefore a priority as
they allow us to compare diabetes surgery to other treatment options
in the attempt to understand when the benefits of surgery outweigh its
risks. Clinical guidelines for diabetes surgery will certainly be
different from those for bariatric surgery, and should not be based
only on BMI levels," he notes.

"The lesson we have learned with diabetes surgery is that diabetes is
not always a chronic and relentless disease, where the only possible
treatment goal is just the control of hyperglycemia and minimization
of the risk of complications. Gastrointestinal surgery offers the
possibility of complete disease remission. This is a major shift in
the way we consider treatment goals for diabetes. It is unprecedented
in the history of the disease," adds Dr. Rubino.

Type 2 diabetes, which accounts for 90 to 95 percent of all cases of
diabetes, is a growing epidemic that afflicts more than 200 million
people worldwide.

At a time when diabetes is growing epidemically worldwide, Dr. Rubino
says that finding new treatment strategies is a race against time. "At
this point, missing the opportunity that surgery offers is not an
option."

In addition to having performed landmark studies in the field of
diabetes surgery, Dr. Rubino was the principal organizer of an
influential Diabetes Surgery Summit, held in Rome in March 2007. This
international consensus conference helped establish the field, making
international recommendations for the use of surgery and creating an
International Diabetes Surgery Task Force. Dr. Rubino serves as a
founding member.

*** end article ***

It remains much smarter to willfully choose to eat less, down to the
right amount ...

http://HeartMDPhD.com/BeSmart

... to lose all the black fat, which is the real cause of the insulin
resistance (IR/MetS) that undergirds type-2 diabetes:

http://HeartMDPhD.com/OffalFat

http://HeartMDPhD.com/BlackFat

Farm animals do start dropping dead after they have been fattened to
the point of acquiring black fat.

Be hungry... be healthy... be hungrier... be euglycemic:

http://TheWellnesFoundation.com/BeHealthy

Prayerfully in the infinite power and might of the Holy Spirit,

Andrew <><
--
Andrew B. Chung, MD/PhD
Lawful steward of http://EmoryCardiology.com
Brethren of the KING of kings and LORD of lords.
http://HeartMDPhD.com/ChristianBrethren
J666 - 05 Mar 2008 23:17 GMT
On Mar 5, 4:58 pm, Woof Woof

> Farm animals do start dropping dead after they have been fattened to
> the point of acquiring black fat.

We now have a 2PD Omer Approach for farm animals to keep the black fat
off while fattening the animals for proper slaughter.

http://HeartMDPhD.com/FarmApproachTherapy(FAT)

Exodus 22:31
"You are to be my holy people. So do not eat the meat of an animal
torn by wild beasts; throw it to the dogs.
Andrew B. Chung, MD/PhD - 05 Mar 2008 23:19 GMT
http://HeartMDPhD.com/OAF
J666 - 05 Mar 2008 23:21 GMT
http://HeartMDPhD.com/OAFOAF

> On Mar 5, 4:58 pm, Woof Woof
>
[quoted text clipped - 9 lines]
> "You are to be my holy people. So do not eat the meat of an animal
> torn by wild beasts; throw it to the dogs.
Andrew B. Chung, MD/PhD - 05 Mar 2008 23:23 GMT
http://HeartMDPhD.com/ARF
J Clement - 06 Mar 2008 02:53 GMT
On Mar 5, 5:58�pm, "Andrew B. Chung, MD/PhD"
<heartdo...@emorycardiology.com> wrote:
> > An article suggesting type 2 diabetes may be a disorder of the
> > upper small intestine:
[quoted text clipped - 171 lines]
> Lawful steward ofhttp://EmoryCardiology.com
> Brethren of the KING of kings and LORD of lords.http://HeartMDPhD.com/ChristianBrethren

Cattle 101

No source, other than Dr. Chung, makes any reference to any farm
animal dying from or having 'black fat'.

Overfed cattle can develop Acidosis a condition where gases from
fermenting feed causes their rumen to bloat.  Sudden changes in diet
are a frequent cause.  This can be also be a result of malnourishment.
Acute acidosis can cause death.

"One misconception many feeders have is that if they limit feed
offered to a pen of cattle, they can prevent the up and down swings in
feed intake, thus minimizing acidosis. Feed records will show intake
variation is small, but this is an artificial situation that does not
reflect true feed intakes for two reasons. " Source: http://www.cattlenetwork.com

"Do not allow cattle to get hungry as they may overeat and bloat when
they gain access to fresh pasture." Source : http://ag.udel.edu/extension

So for cattle, and one suspects many mammals, hunger is not 'great' or
'wonderful'.  Hunger can and does cause problems.

My guess is Dr, Chung will now post a link to a google post he made
earlier or to one of his websites claiming anyone who disagrees with
him is an agent of satan.

I am certain he will not post verifiable facts to dispute the
information given above.

JS
Andrew B. Chung, MD/PhD - 06 Mar 2008 03:53 GMT
http://HeartMDPhD.com/Liarsatan
J666 - 06 Mar 2008 04:46 GMT
On Mar 5, 8:53 pm, J Clement

> My guess is Dr, Chung will now post a link to a google post he made
> earlier or to one of his websites claiming anyone who disagrees with
[quoted text clipped - 4 lines]
>
> JS

Looks like Chung did just that.

Jesus H. Christ  could say Holy Cow

http://www.whitedust.demon.co.uk/scabbydog/therealjesuscow.jpg

http://www.whitedust.demon.co.uk/scabbydog/jesuscow.gif
Andrew B. Chung, MD/PhD - 06 Mar 2008 05:18 GMT
http://HeartMDPhD.com/ARF

<><

May dear neighbors, friends, and brethren have a blessedly wonderful
2008th year since the birth of our LORD Jesus Christ as the Son of
Man ...

... by being hungrier:

http://TruthRUS.org/KnowingGOD

Hunger is wonderful:

http://HeartMDPHD.com/Hunger

It's how we know what GOD wants, which is what is good.

Yes, hunger is our knowledge of good versus evil that Adam and Eve
paid for with their and our immortal lives.

Those who suffer from the powerful delusion predicted by the prophecy
of 2 Thessalonians 2:9-11 would deny this and perish ( gone !!! )
forever ...

http://HeartMDPhD.com/Convicts/CrazyOne

http://HeartMDPhD.com/Convicts/CrazyTwo

http://HeartMDPhD.com/Convicts/CrazyThree

http://HeartMDPhD.com/Convicts/CrazyFour

http://HeartMDPhD.com/Convicts/Bob

... gone:

http://YouTube.com/watch?v=Qb6d_z5C35E

Such will be the demise of all those who refuse to know **and** love
the truth, Who is LORD Jesus Christ:

http://HeartMDPhD.com/Love/TheTruth

Be hungry... be healthy... be hungrier... be blessed:

http://HeartMDPhD.com/HolySpirit/BeBlessed

"Blessed are you who hunger NOW...

... for you will be satisfied." -- LORD Jesus Christ (Luke 6:21)

Amen.

http://HeartMDPhD.com/HolySpirit/Luke6_21

Prayerfully in the infinite power and might of the Holy Spirit,

Andrew <><
--
Andrew B. Chung, MD/PhD
Lawful steward of http://EmoryCardiology.com
Brethren of the KING of kings and LORD of lords.
http://HeartMDPhD.com/ChristianBrethren
J666 - 06 Mar 2008 05:37 GMT
On Mar 5, 11:18 pm, MooMoo

Chung's udder nonsense snipped

 > Lawful herder of http://EmooryCardiology.com

  >http://HeartMooDPhD.com/MooMo
Andrew B. Chung, MD/PhD - 06 Mar 2008 06:04 GMT
http://HeartMDPhD.com/Idioticsatan

<><

May dear neighbors, friends, and brethren have a blessedly wonderful
2008th year since the birth of our LORD Jesus Christ as the Son of
Man ...

... by being hungrier:

http://TruthRUS.org/KnowingGOD

Hunger is wonderful:

http://HeartMDPhD.com/Hunger

It's how we know what GOD wants, which is what is good.

Yes, hunger is our knowledge of good versus evil that Adam and Eve
paid for with their and our immortal lives.

Those who suffer from the powerful delusion predicted by the prophecy
of 2 Thessalonians 2:9-11 would deny this and perish ( gone !!! )
forever ...

http://HeartMDPhD.com/Convicts/CrazyOne

http://HeartMDPhD.com/Convicts/CrazyTwo

http://HeartMDPhD.com/Convicts/CrazyThree

http://HeartMDPhD.com/Convicts/CrazyFour

http://HeartMDPhD.com/Convicts/Bob

... gone:

http://YouTube.com/watch?v=Qb6d_z5C35E

Such will be the demise of all those who refuse to know **and** love
the truth, Who is LORD Jesus Christ:

http://HeartMDPhD.com/Love/TheTruth

Be hungry... be healthy... be hungrier... be blessed:

http://HeartMDPhD.com/HolySpirit/BeBlessed

"Blessed are you who hunger NOW...

... for you will be satisfied." -- LORD Jesus Christ (Luke 6:21)

Amen.

http:/HeartMDPhD.com/HolySpirit/Luke6_21

Prayerfully in the infinite power and might of the Holy Spirit,

Andrew <><
--
Andrew B. Chung, MD/PhD
Lawful steward of http://EmoryCardiology.com
Brethren of the KING of kings and LORD of lords.
http://HeartMDPhD.com/ChristianBrethren
Cary Kittrell - 06 Mar 2008 16:52 GMT
> On Mar 5, 8:53 pm, J Clement
>
[quoted text clipped - 8 lines]
>
> Looks like Chung did just that.

Well, hey, it was a sucker bet.

-- cary

> Jesus H. Christ  could say Holy Cow
>
> http://www.whitedust.demon.co.uk/scabbydog/therealjesuscow.jpg
>
> http://www.whitedust.demon.co.uk/scabbydog/jesuscow.gif
Jefferson - 26 Mar 2008 15:40 GMT
> An article suggesting type 2 diabetes may be a disorder of the
> upper small intestine:
>
> http://www.sciencedaily.com/releases/2008/03/080305113659.htm 

More is said in the Science Daily release than in the following
abstract.  I often keep a copy of an abstract in a pending file
as a reminder to access the full article when it is available.
Since this was published in the February 2008 issue the full article
should be available in August (6 months).

Is Type 2 Diabetes an Operable Intestinal Disease? -
http://tinyurl.com/3bgmnk or
http://care.diabetesjournals.org/cgi/content/abstract/31/Supplement_2/S290

This is peculiar in that the duodenum is where the duct from the
exocrine pancreas secretes the enzyme that breaksdown fats,
carbohydrates, and proteins. The duodenum is also the location of the
duct that secretes the concentrated bile from the gall bladder that is
initially produced in the liver. The jejunum is the location of the
K-type cells that produce the incretin hormone GIP. All indications are
that this was an animal study.  At this point the bypass does not make
sense to me. ;)

"Dr. Rubino's prior research has shown that the primary mechanisms by
which gastrointestinal bypass procedures control diabetes specifically
rely on the bypass of the upper small intestine -- the duodenum and
jejunum. This is a key finding that may point to the origins of
diabetes.

"When we bypass the duodenum and jejunum, we are bypassing what may be
the source of the problem," says Dr. Rubino, who is heading up NewYork-
Presbyterian/Weill Cornell's Diabetes Surgery Center.

In fact, it has become increasingly evident that the gastrointestinal
tract plays an important role in energy regulation, and that many gut
hormones are involved in the regulation of sugar metabolism. "It
should not surprise anyone that surgically altering the bowel's
anatomy affects the mechanisms that regulate blood sugar levels,
eventually influencing diabetes," Dr. Rubino says.

While other gastrointestinal operations may cure diabetes as an effect
of changes that improve blood sugar levels, Dr. Rubino's research
findings in animals show that procedures based on a bypass of the
upper intestine may work instead by reversing abnormalities of blood
glucose regulation."
Jefferson - 29 Mar 2008 20:42 GMT
>> An article suggesting type 2 diabetes may be a disorder of the
>> upper small intestine:
[quoted text clipped - 19 lines]
> that this was an animal study.  At this point the bypass does not make
> sense to me. ;)

There is not a lot available on scholar.google.com about an
anti-incretin effect. One abstract written in 1996 wrote about such a
phenomena. "Because enterostatin is generated in the small intestine
after feeding, it might play a role in the enteroinsular axis as an
anti-incretin agent."PMID: 8772715

Fat Digestion and its Role in Appetite Regulation and Energy Balance
-The Importance of Enterostatin and Tetrahydrolipstatin

Authors: Lindqvist Andreas1; Erlanson-Albertsson Charlotte1

Source: Current Medicinal Chemistry - Central Nervous System Agents,
Volume 3, Number 3, September 2003 , pp. 157-175(19)

Abstract:
A high fat intake, together with an inability to match lipid utilization
of a high-fat intake, is correlated with obesity in man. In this review
enterostatin, a peptide, which specifically reduces fat intake, is
described. Enterostatin is formed in the intestine by the cleavage of
pancreatic procolipase, the remaining colipase serving as an obligatory
cofactor for pancreatic lipase during fat digestion. Enterostatin is
also produced in chief cells of the stomach as part of procolipase as
well as in enterochromaffine cells independent of procolipase, most
frequent in the antral part of the stomach extending all along the
intestine down to the ileum. Enterostatin has been found to increase
during fat feeding, where it is found in the intestinal lumen, in the
lymph as well as in the circulating blood. When reducing food intake,
enterostatin behaves as a physiological satiety substance, inducing
early satiety. A raised production of serotonin has been measured
centrally. During long-term treatment, enterostatin has been found to
reduce body weight in the rat and mouse. A reduced body weight may be
explained by a decreased food intake and an increased energy expenditure
through activation of the sympathetic nervous system and increased
expression of uncoupling protein 1 in brown adipose tissue. Enterostatin
also increases the expression of uncoupling protein 2 in the
gastrointestinal tract. The mechanism of action of enterostatin suggests
the involvement of the opioid system being inhibited by enterostatin.
Another target protein for enterostatin is the beta-subunit of
F1F0-ATPase. These two target proteins may explain the appetite
regulating effects of enterostatin as well as the thermogenic effects.

Keywords: fat intake; insulin; body weight; obesity; pancreas; colipase
http://tinyurl.com/35p87f

The sites of action give some indication of what is physiologically
involved with enterostatin. There is a complex interaction involving
portions of the brain, the vagal nerve, the stomach, and the lower
portion of the small intestine.

Selected excerpts:
"Enterostatin, a pentapeptide released from the exocrine pancreas and
gastrointestinal tract, selectively inhibits fat intake through
activation of an afferent vagal signaling pathway. This study
investigated if the effects of enterostatin were mediated through a
CCK-dependent pathway. [...] The procolipase gene is expressed in the
exocrine pancreas, the stomach and duodenal mucosa (29), and in specific
brain regions (13). [...] If  enterostatin acts through CCK-A receptors,
it would be expected that CCK and enterostatin should share similar
selective effects on intake of dietary fat. [...] CCK given peripherally
or into the near-celiac artery inhibits food intake (3). This response
is likewise recognized to result from an activation of afferent vagal
neurons from the gastrointestinal tract to the brain stem and higher
brain centers (38). Indeed CCK-A receptors are present in afferent vagal
neurons to the NTS region of the brain stem (4). Thus it is possible
that  enterostatin modulates its response from the periphery by
activation of a subset of CCK-dependent vagal afferent neurons." Source:
Enterostatin inhibition of dietary fat intake is dependent on CCK-A
receptors (a 2003 article) -
http://ajpregu.physiology.org/cgi/content/full/285/2/R321

Frank
Jefferson - 07 Apr 2008 18:09 GMT
>> An article suggesting type 2 diabetes may be a disorder of the
>> upper small intestine:
[quoted text clipped - 10 lines]
> http://tinyurl.com/3bgmnk or
> http://care.diabetesjournals.org/cgi/content/abstract/31/Supplement_2/S290

By chance I found that a small trial of this procedure is to occur in
humans later this year. By the time this trial starts the full article
in Diabetes Care should be available for non-subscribers.

Study of Duodenal-Jejunal Bypass(DJB) as a Potential Cure for Type 2
Diabetes Mellitus -
http://clinicaltrials.gov/ct2/show/NCT00562029?term=diabetes&rank=119

Study Type: Interventional
Study Design: Treatment, Non-Randomized, Open Label, Single Group
Assignment, Safety/Efficacy Study
Official Title: Modified Duodenal Switch Procedure "Duodenal-Jejunal
Bypass" (Diabetes Surgery) As A Potential Cure for Type 2 Diabetes
Mellitus in Non-Obese Patients- a Pilot Project to Validate a
Prospective Randomized Control Trial

Further study details as provided by Sound Shore Medical Center of
Westchester:

Primary Outcome Measures:
*Measure: Resolution of Type 2 Diabetes Mellitus [ Time Frame: One year]
Secondary Outcome Measures:
* Measure: Safety and efficacy of duodenal-jejunal bypass [ Time Frame:
One year ]
Estimated Enrollment: 10
Study Start Date: November 2007
Estimated Study Completion Date: November 2008

Frank
John Williamson - 07 Apr 2008 18:43 GMT
>> An article suggesting type 2 diabetes may be a disorder of the
>> upper small intestine:
[quoted text clipped - 42 lines]
> upper intestine may work instead by reversing abnormalities of blood
> glucose regulation."

This originally came up a while ago as a "by the way, we found that" on
a follow up of a number of severely obese type 2 patients receiving this
surgery to aid weight loss, there was an over 90% cure rate for the
diabetes, even *before* noticeable weight loss occured.

Cured, as in on a normal diet & off *all* diabetic medications for the
period covered. (So far a couple of years, maybe as many as 5, IIRC)

There was speculation about intentions to look for ways to send/
inhibit, whichever it turned out to be, the signals from this area by
non surgical means. It would appear someone's finally got the funding to
look into it. :-)

It's considered by the source I saw as a high risk surgical procedure,
though, & is normally only considered as a last resort after all other
methods of losing weight have failed.

Signature

Tciao for Now!

John.

Jefferson - 07 Apr 2008 22:42 GMT
>> "Dr. Rubino's prior research has shown that the primary mechanisms by
>> which gastrointestinal bypass procedures control diabetes specifically
[quoted text clipped - 5 lines]
>> the source of the problem," says Dr. Rubino, who is heading up NewYork-
>> Presbyterian/Weill Cornell's Diabetes Surgery Center.

> This originally came up a while ago as a "by the way, we found that" on
> a follow up of a number of severely obese type 2 patients receiving this
[quoted text clipped - 3 lines]
> Cured, as in on a normal diet & off *all* diabetic medications for the
> period covered. (So far a couple of years, maybe as many as 5, IIRC)

No John this is not the same procedure.  Previously this was only done
only in animals such as rats.  The earlier surgeries involved the
stomach not the lower intestines. This surgery does not involve the
stomach. The duodenum is the first part of the small intestine
immediately after the stomach.

Frank
John Williamson - 08 Apr 2008 00:03 GMT
>>> "Dr. Rubino's prior research has shown that the primary mechanisms by
>>> which gastrointestinal bypass procedures control diabetes specifically
[quoted text clipped - 19 lines]
> stomach. The duodenum is the first part of the small intestine
> immediately after the stomach.

Odd then, that I remember the headline on the title page as "Doudenal
bypass cures diabetes" or some variation of those words, in New
Scientist in September last year, complete with a pretty picture in the
article showing the bits they bypassed. Cure rate stated as 98% in a
total of 50 patients, all of whom were severely obese type 2 diabetics.

<Checks in memory and on google>
Here we go...

http://www.newscientist.com/channel/health/mg19526193.100-could-type-2-diabetes-
be-reversed-using-surgery.html


for an extract of the full article.

    03 September 2007
    Magazine issue 2619

There was also a thread about it on this newsgroup at the same time
where I was involved, which you may have missed as Chunk also got involved.

It's still in the Google archive.

Quick summary. Of 50 or more patients who had the operation for weight
loss at the hospitals taking part, 98% were cured totally, & of a group
of 7 patients who were operated on (In Brazil, IIRC) purely because of
diabetes after the information came to light, 100% were cured.

The information originally came to light when someone was doing some
data mining in the hospital records.

The procedure seems a bit risky for my liking at the moment, but then
again, I'm only on an insulin agonist & metformin. If it was a choice
between injecting insulin & having this surgery, I might be willing to
have a go at it.

Originally noted by a European cross border group with links to Brazil,
apparently, & as you say, not to be confused with gastric bypass. They
were speculating that the duodenal area was generating nerve or chemical
signals that were affecting the pancreas, & when the food stopped
passing through the duodenum, that stopped the signals, restoring normal
pancreatic function.

The American work may well be based on animal studies, but the European
& Brazil based information was definitely a by product of surgery
carried out for reasons other than diabetes.

Maybe both groups should have a chat.....

Still & all, a useful tool in the right circumstances, especially if
they find out how it works & can reproduce the effects without major
bowel surgery.

Signature

Tciao for Now!

John.

Jefferson - 08 Apr 2008 19:17 GMT
>>>> "Dr. Rubino's prior research has shown that the primary mechanisms by
>>>> which gastrointestinal bypass procedures control diabetes specifically
[quoted text clipped - 5 lines]
>>>> the source of the problem," says Dr. Rubino, who is heading up NewYork-
>>>> Presbyterian/Weill Cornell's Diabetes Surgery Center.

The Mechanism of Diabetes Control After Gastrointestinal Bypass Surgery
Reveals a Role of the Proximal Small Intestine in the Pathophysiology of
Type 2 Diabetes - http://tinyurl.com/6an5kw

In this 2006 article: "Conclusions:
This study shows that bypassing a short segment of proximal intestine
directly ameliorates type 2 diabetes, independently of effects on food
intake, body weight, malabsorption, or nutrient delivery to the hindgut.
These findings suggest that a proximal intestinal bypass could be
considered for diabetes treatment and that potentially undiscovered
factors from the proximal bowel might contribute to the pathophysiology
of type 2 diabetes." Dr. Rubino has co-authored articles on this topic
as early as 2002 (see search at the end).

>>> This originally came up a while ago as a "by the way, we found that"
>>> on a follow up of a number of severely obese type 2 patients
[quoted text clipped - 28 lines]
> There was also a thread about it on this newsgroup at the same time
> where I was involved, which you may have missed as Chunk also got involved.

Yes, Chunk is like a cancer.  I tend to avoid reading threads after the
jerk enters.  I also avoid long threads where the topic tends to change.
You are right about the previous posts, yet it seems as though the
procedure has been modified somewhat.

> It's still in the Google archive.

I found a thread on alt.diabetes.support.uk but it did not mention the
New Scientist article you cited above. - http://tinyurl.com/6k7dd5.

> Quick summary. Of 50 or more patients who had the operation for weight
> loss at the hospitals taking part, 98% were cured totally, & of a group
[quoted text clipped - 19 lines]
> & Brazil based information was definitely a by product of surgery
> carried out for reasons other than diabetes.

It could be that the addition of jejunum was Dr. Rubino change.

More background information:
Study of Duodenal-Jejunal Bypass(DJB) as a Potential Cure for Type 2
Diabetes Mellitus -
http://clinicaltrials.gov/ct2/show/NCT00562029?term=diabetes&rank=119

"Detailed Description:

Hypothesis: The duodenum plays a major role in glucose homeostasis
through mechanisms largely unknown at this time. Evidence of this
hypothesis comes from accumulated data in bariatric surgery patients who
underwent Roux-en-y Gastric Bypass or Biliopancreatic Diversion (BPD)
with or without a Duodenal Switch. Current evidence strongly supports
this hypothesis with a long term (over 10 years) Type 2 Diabetes
Mellitus(T2DM) resolution rate of 84-86% following the gastric bypass
and over 95% for the duodenal switch.

The clinical resolution of T2DM is defined as independence of all
anti-diabetic medications and maintaining a HbA1c less than 6.0. Recent
rodent experiments by Francesco Rubino and subsequent human case reports
by Cohen et al. supports the validity of this hypothesis. The modified
procedure involved a roux-en-y bypass of the duodenum and 30-50cm of
proximal jejunum, unaltering the stomach and pylorus resulted in
resolution of T2DM with no weight loss in all subjects."

The last sentence is the clue that this is a modified procedure. About 1
to 2 inches of the jejunum are involved beyond the duodenum.

A scholar.google.com search for duodenum+bypass+diabetes+jejunum+human
+trials - http://tinyurl.com/5dhxaj
John Williamson - 08 Apr 2008 22:03 GMT
<technical bits snipped for brevity> I'll be checking more when I can
get some unthrottled bandwidth, this fidddling about via cellphone isn't
cheap. :-/

Whatever's being done by whichever group, it definitely sounds as though
it's of great interest to us type 2's as long as the other risks from
the operation can be minimised or if they find the underlying reason for
what's going on & can reproduce it as a none or minimally invasive
procedure.

Signature

Tciao for Now!

John.

Trinkwasser - 09 Apr 2008 18:24 GMT
><technical bits snipped for brevity> I'll be checking more when I can
>get some unthrottled bandwidth, this fidddling about via cellphone isn't
[quoted text clipped - 5 lines]
>what's going on & can reproduce it as a none or minimally invasive
>procedure.

Yes that's the most important point IMO, if they find out exactly what
this operation "cures" then maybe there will open up yet another
approach to treatment via drugs or other means to target the system
involved.
Jefferson - 09 Apr 2008 20:11 GMT
>><technical bits snipped for brevity> I'll be checking more when I can
>>get some unthrottled bandwidth, this fidddling about via cellphone isn't
[quoted text clipped - 10 lines]
> approach to treatment via drugs or other means to target the system
> involved.

For most T2s this is the heart of message from these studies.  If the
researchers can find the switch to turn the right stuff on and the wrong
stuff off at whatever level that brings about the balance needed for
favorable a situation.

Frank
Quentin Grady - 04 May 2008 08:27 GMT
><technical bits snipped for brevity> I'll be checking more when I can
>get some unthrottled bandwidth, this fidddling about via cellphone isn't
[quoted text clipped - 5 lines]
>what's going on & can reproduce it as a none or minimally invasive
>procedure.

G'day G'day John and Frank,

  We live in exciting times.  I find it hard to imagine any procedure
that could be regarded as non-invasive or even minimally invasive even
though some keyhole surgery is approaching that dream.  What may be
more possible is finding a new drug to use in combination with
existing oral medications.  

Recently we've had some interesting discussion brought about by a
person who regarded his diabetes as the serious sort that could only
be controlled by oral medication, not exercise and diet.  IMHO most
existing medication is little more than a supplement to exercise and
diet.  The oral meds help but don't take the place of the basics.  

If this research throws up a new family of drugs then at least it
would be possible to experiment with new combinations of exercise,
diet, existing oral meds and new oral meds.  Our chances of avoiding
complications would get that much better.

Best wishes,
Signature

Quentin Grady       ^  ^  /
New Zealand,       >#,#< [
                   / \ /\    
"... and the blind dog was leading."

http://homepages.paradise.net.nz/quentin

 
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