The threshold for T was 2- to 3-fold greater than that for DHT. Role of alpha-reductase.Testosterone wellbutrin side effects hair loss (T), the major circulating androgen, must be converted to dihydrotestosterone male balding (DHT) by the enzyme alpha-reductase (alpha-R) to be maximally hair loss shampoo reviews active in the prostate. The present study was designed to determine the relative potency of T and DHT on cialis dosage instructions regrowth of the involuted prostate and to elucidate the role of alpha-R in the growing prostate.
The dose-response curves revealed male balding that female hair loss reasons viagra use thresholds for intraprostatic T and DHT had to be attained before significant growth was observed. In addition, we hypothesize that T has arisen male hair loss products as the major circulating androgen instead of DHT hair regrowth because it can be aromatized to estradiol, which itself has important roles in male hairmax laser comb reviews reproductive function and elliot physiology.. However, at high intraprostatic hair loss concentrations, the effects of T mimicked those of DHT. It converts testosterone into a modestly more potent androgen and enhances prostatic accumulation of androgen. This is partly due to decreased androgen hair loss accumulation in the prostate when T was the major intraprostatic androgen. In the prostate, 1.6-1.9 times more T than DHT was required to achieve baldness a half-maximal response for each of the three markers of prostate regrowth. Androgen-induced regrowth in the castrated rat ventral prostate. When the relationship between serum T levels and prostate regrowth was considered, 13 times more serum T was required for half-maximal prostate regrowth when its conversion to DHT was blocked by finasteride.
Markers for androgen effects on regrowth of the prostate male pattern baldness were prostate weight, duct mass (a measure of secretory activity) and DNA content (a measure of cell number). To assess the relative uptake of T and DHT by the prostate, a comparison was made of intraprostatic DHT levels resulting from T and DHT implants. To create dose-response curves for intraprostatic T or DHT, rats were castrated for 2 weeks to allow their prostates to fully regress and then given T implants of various sizes in the presence or absence of the alpha-R inhibitor, finasteride. DHT, in principle, could serve equally well as T as the circulating androgen, although the rate of DHT production finasteride propecia cost would have to be considerably higher to counter the apparent rapid clearance from serum. Finally, T or DHT implants in the absence of finasteride resulted in similar intraprostatic male baldness pattern DHT levels, indicating that uptake of each serum androgen into the prostate was similar. We conclude that the role of alpha-R is 2-fold. However, to achieve similar levels of DHT or T in serum, much larger DHT pellets were needed, suggesting more rapid metabolism of DHT in tissues other than the prostate.
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