Home | Contact Us | FAQ | Search & Site Map | Link to Us
Sign In | Join | Other 45 Sites in Network
Home
Discussion Groups
General
GeneralCardiologyVisionDentistryPharmacyLaboratoryNutritionAlternative
Diseases and Disorders
AIDSAlzheimer'sArthritisAsthmaCancerBreast CancerDiabetesEpilepsyGlaucomaHepatitisHerpesLupusProstate BPHProstate CancerProstatitisSinusitisTinnitus

Medical Forum / General / General / September 2006

Tip: Looking for answers? Try searching our database.

Male Pattern Baldness causation question

Thread view: 
Enable EMail Alerts  Start New Thread
Thread rating: 
Pete - 15 Sep 2006 17:23 GMT
Hello

The current theory regarding the causes of male pattern baldness, MPB has
the main culprit as the hormone dihydrotestosterone, DHT. This is produced
locally in scalp hair follicle cells by the enzyme 5-alpha reductase which
produces it from testosterone. DHT has a much stronger affinity to the
androgen receptors on hair cells. It attaches to the receptor and this
complex enters the cell nucleus and affects gene expression which over time
turns the follicle from one producing terminal hair, to vellus hair. The
actual details of this process are not understood.

Now what I would like to know is this, is MPB caused by either:

1)      An overproduction of DHT balding men. i.e.  bald men have a much
higher conversion of DHT than non bald.

2)      Or a greater sensitivity of the follicle cells to DHT. So bald and
non bald have the same levels of DHT but the bald men have maybe more
receptors, more sensitive receptors etc or some other as yet unknown
difference that causes the balding process

Thanks.
Jason Johnson - 15 Sep 2006 18:10 GMT
Hello

The current theory regarding the causes of male pattern baldness, MPB has
the main culprit as the hormone dihydrotestosterone, DHT. This is produced
locally in scalp hair follicle cells by the enzyme 5-alpha reductase which
produces it from testosterone. DHT has a much stronger affinity to the
androgen receptors on hair cells. It attaches to the receptor and this
complex enters the cell nucleus and affects gene expression which over time
turns the follicle from one producing terminal hair, to vellus hair. The
actual details of this process are not understood.



Now what I would like to know is this, is MPB caused by either:

1)      An overproduction of DHT balding men. i.e.  bald men have a much
higher conversion of DHT than non bald.

2)      Or a greater sensitivity of the follicle cells to DHT. So bald and
non bald have the same levels of DHT but the bald men have maybe more
receptors, more sensitive receptors etc or some other as yet unknown
difference that causes the balding process



Thanks.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Genes play a major role related to MPB.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Pete - 15 Sep 2006 18:33 GMT
> Hello
>
[quoted text clipped - 25 lines]
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Yes I know the two possibilities are genetically determined, I was wondering
though which was the case.
1) Do bald men produce more DHT than non-bald or:-
2) Do bald and non bald men produce the same amount of DHT but bald men have
a greater sensitivity to it?
Jason Johnson - 15 Sep 2006 21:07 GMT
"Jason Johnson" <jason@nospam.com> wrote in message
news:jason-1509061010010001@66-52-22-20.lsan.pw-dia.impulse.net...
> In article <450ad369$0$1394$da0feed9@news.zen.co.uk>, "Pete"
> <noxxtr768jUal1@notmail.com> wrote:
[quoted text clipped - 28 lines]
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Yes I know the two possibilities are genetically determined, I was wondering
though which was the case.
1) Do bald men produce more DHT than non-bald or:-
2) Do bald and non bald men produce the same amount of DHT but bald men have
a greater sensitivity to it?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hello,
I am not an expert on MPB but will take a guess. My guess is Number 2.
Regardless, the genes cause it to happen. I once read an article
indicating that the only way that a man that had those genes would not
become bald was by having a doctor cut off his testicles. Now you know the
reason you see so many bald headed men since they would prefer to be bald
than to have no testicles. I don't know whether or not there are
medications that control DHT levels.
Jason
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
glenn P - 16 Sep 2006 23:20 GMT
Ketoconazole has been shown to reduce the effect of 5aR on the hair
follicle.

> > In article <450ad369$0$1394$da0feed9@news.zen.co.uk>, "Pete"
> > <noxxtr768jUal1@notmail.com> wrote:
[quoted text clipped - 54 lines]
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
Sign In
Join
My Latest Posts
My Monitored Threads
My Blog
My Photo Gallery
My Profile
My Homepage

Start New Thread
Enable EMail Alerts
Rate this Thread



©2008 Advenet LLC   Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.