15-07-2014, 06:08 AM
(15-07-2014, 05:51 AM)lovely11 Wrote: your post about binding affinity to carrier proteins matches up with what is at wikipedia 'SHBG'.
The binding affinity for estrogen wouldn't explain why women have a higher % of more free testosterone. An overall lower level of testosterone could mean lower % of testosterone while having less free testosterone than a male.
"estosterone and estradiol circulate in the bloodstream, bound mostly to SHBG and to a lesser extent serum albumin and corticosteroid-binding globulin (CBG) (AKA transcortin)" wikipedia SHBG
"If more testosterone is converted to estrogen due to abnormal aromatase levels, the SHGB I will increase as well. SHGB, being more readily bound to testosterone, will leave us with excess estrogen levels in the system, which in turn will stimulate increased production of the SHGB protein from the liver." - Lotus; estrogen is responsible for raising SHGB, even though it has lesser affinity for it? SHGB seems to have a minimal impact on women then.
So you see the pattern of estrogen lowering testosterone, prolactin, and progesterone. Prolactin lowering estrogen and testosterone. The 3 hormones, and possibly testosterone (but not DHT) up-regulating the opposing receptors in the breast, making them more sensitive to growth stimulus. The 4 hormones have a seesaw effect, on each other and on the receptors.
We need new threads on binding carrier proteins and reductase.
Ok, only it's my bedtime, lol.
Here's a start for the cause, I'll leave the rest up to you.
Carrier Proteins and Active Membrane Transport
http://www.ncbi.nlm.nih.gov/books/NBK26896/