michael barry said:
Stephen,
I see that other experiments like this
http://www.ehrs.org/conferenceabstracts ... -itami.htm had to artificially culture androgen receptors to put with the keratinocyte and dermal papilla cells, and I assume that this always has to be done becuase culturing DPC's, KC's, and EC's proboably all inhibit AR expression for petri-dish purposes. I dont know if Bryan or Dave would accept that labratory standard operating procedure invalidating the ensuing experiments.......be anxious to hear their take on that.
Bryan refers to your belief that topical anti-androgen receptor indications like fluridil and RU58841 work because the adhere to receptors further down (to the suprise of their inventors I'd imagine), what receptors are there in the lymph nodes for them to adhere to?
I don't think you are clear about my theory Michael, so i'll try to clear up this points.
I don't think the inventors of anti-androgens would be suprised, because as far as i know the only anti-androgens to show any effect upon male pattern baldness in humans, are known to have a more systematic effect.
Michael said:
I know you've stated that DHT's primary role in a male is to govern the pumping of the lymphaitic system and too much of it seems to slow the pumping down, hence the edema on the top of the scalp. I wasnt aware that there are AR's on lymph nodes?
First, it has been shown that regular contractions of lymphatic vessels, play a role in pumping lymph through the vessels.
http://www.healthy.net/asp/templates/ar ... cle&ID=993
This mechanism has to involve the contractions of muscle fibers in the vessel walls. Muscle is known to contain androgen receptors.
http://muscle.ucsd.edu/musintro/steroids.shtml
So a pathway exists for androgens to effect lymphatic pumping. I would add that the nervous system is going to be involved in the signaling necessary for any androgen induced muscle contractions, and androgens are known to effect the nervous system.
http://www.mesomorphosis.com/articles/a ... nction.htm
I think there is an important reason in evolution for androgens "TO" increase lymphatic drainage. This is a "performance" enhancing effect. This increase in tissue fluid turnover would increase nutrient supply and waste removal in tissues to aid tissue performance in line with general androgen effects in men.
Michael said:
My initial hesitations of your idea still persists.
ONE. Scalp edema, as a function of plain ol' gravity, should'nt happen as much as Androgenetic Alopecia should it? I mean, wow, HALF Caucasoid men's scalp just have lymph pumps that are backed up with stagnant protiens and lymph fluid, causing high fluid pressure and an immuno-response that causes fibrosis on their skulls? Thats hard to swallow, but I'll accept anything science conclusively proves.
TWO. We all know that androgens stimulate beard, auxilary, body hair growth...........since a man gets hairier from the eyebrows down as he ages, it just stands to reason that since he balds up top that these same hormones are causing the baldness in a similar way up there (i.e. by direct influence on the follicle just as it works on the body hair). Youre stating that DHT makes body hair grow directly, but making head hair fall out indirectly.
No Michael this is not what i have said.
Gravity has very little to do with the conditions that i propose develope in "some" men to create male pattern baldness.
I have said that i believe body hair growth and male pattern baldness are "BOTH" indirect effects of DHT based upon local changes in lymphatic drainage. DHT as you say grows hair over the larger part of the body. I suggest that in increasing lymphatic pumping, DHT reduces tissue fluid pressures particularly in areas rich in lymphatic vessels. When this happens near hair follicles, the reduced tissue pressure reduces the resistence to the growth of larger follicles through normal contact inhibition. So where there are increased concentrations of lymph vessels near follicles, the effect is more hair growth.
This matches with the increased concentrations of lymph vessels near the surface in the groin (pubic) area, the armpits and beard area.
The corrolation can even be seen in scalp hair growth, take a look at this.
http://137.222.110.150/calnet/DeepNeck/ ... m#section6
Note how the level of the surface collection nodes, (where the vessels start to go deep) represents the base of the hairline. Also note that the vessels at the end of the system (the male pattern baldness area), are few compared with the lower vessels these have to drain through. I think this is important in understanding the development of male pattern baldness in "some" people.
This is where it gets slightly complicated.
If DHT is generaly increasing lymphatic pumping, the ends of the system can be vunerable. Say DHT is increasing the contraction rate of the lymph vessels in the surface tissue of the head, this is increasingly closing the one way valves against flow from the end of the "pipework" (the male pattern baldness area).
This slight reduction of drainage from the end of the system would not cause problems under normal circumstances. But the human brain has had to evolve a very complex blood circulation system in order to enlarge. To cut a long story short, blood feeds into the scalp from all directions, and if you cut your scalp you soon are aware of the high blood pressure here!
If an individual has a higher pressure blood feed to the scalp, there is more chance of the reduced drainage caused by DHT creating edema and male pattern baldness. Individuals with a lower "basic" blood pressure to the head may not develope this edema. I suggest this feed side of the equation is what predisposes an individual to male pattern baldness for the same level of DHT.
This would also explain the recognised corrolation with male pattern baldness and heart problems, it's the "core" blood pressure that makes the difference.
Michael said:
THREE. The biggie. Sebaceous glands get BIGGER in male pattern baldness even in the front of the scalp. How can they enlarge if fluid pressure is too high to allow it?
But they don't Michael, this is a myth! Show me some hard evidence?
The sebaceous glands in the scalp remain the "same" size they were before male pattern baldness. These were large glands serving large follicles, when the follicles have shrunken the sebaceous glands remain the same size. This is consistant with my theory.
Hair follicles naturally shrink during the resting phase of the hair cycle. This makes them more "adjustable" through normal contact inhibition.
Sebaceous glands don't go through a growth cycle, so it is more likely that a decrease in external pressure will increase their size through contact inibition being "lifted", as happens particularly in the beard area. It is going to be harder for an increase in pressure in the male pattern baldness area to reduce their size, because they are not having to "re-enlarge" like anagen follicles. As pre-existing "large" structures they will not be shrunken by the normal contact inhibition of growth. (They are already grown as it were).
Michael said:
FOUR. Things like proanthocyanidrins, laminria extract, etc. supposedly excite certain cells in the follicle to speed up production. Too much Insulin-like Growth Factor supposedly slows production in parts of the follicle. Why not DHT?
Question. Im assuming you use cold water rinses and a form of massage on your own scalp to induce the lymph to drain back down. If this is all you use........what has your success been like? Are you keeping the hair you have?
The point is Michael, that if contact inhibition of organ growth is involved in androgen related hair growth, this is going to be the governing "overrulling" factor.
I will say it again, there is just no way when you consider "ALL" the facts that DHT can be "directly" reducing hair growth in male pattern baldness. Why?, because the scientific method, rules this out!
For example, the current theory just cannot explain the immunology in male pattern baldness, and that is just one problem it has!
As far as my own situation is concerned, i can maintain what i have left. Although as i have gone on the record about before, my previous treatment for, and the effects of cancer i am left with, rules out much experimentation in my case because of my immune status.
Thanks for your interest and courtesy in discussing these issues.
S Foote.