androgen

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Related to androgenic: Androgenic alopecia, androgenic steroids, Androgenic hair

androgen

(ăn`drəjən): see testosteronetestosterone
, principal androgen, or male sex hormone. One of the group of compounds known as anabolic steroids, testosterone is secreted by the testes (see testis) but is also synthesized in small quantities in the ovaries, cortices of the adrenal glands, and placenta, usually
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.

Androgen

One of a class of steroid hormones. Androgens play a major role in the development and maintenance of masculine secondary sexual characters, for example, the seminal vesicle and prostate gland of the male mammal, and the comb, wattles, and spur of the male fowl. They also influence certain other secondary sexual characters, such as hair growth pattern and voice quality in humans. In the fowl, they affect the pattern and seasonal coloration of its feathers, as well as crowing. In addition, androgens affect nitrogen metabolism (anabolic). Androgens are produced in the testis, ovary, adrenal, and most likely, in the placenta. A small portion of the androgen is from corticoids, or adrenal cortex steroids, and from other C21 steroids, such as progesterone. See Hormone, Ovary, Progesterone, Steroid, Testis

androgen

[′an·drə·jən]
(biochemistry)
A class of steroid hormones produced in the testis and adrenal cortex which act to regulate masculine secondary sexual characteristics.
References in periodicals archive ?
Identify and understand important and diverse types of therapeutics under development for Androgenic Alopecia.
Red clover isoflavones may modify androgenic effects in the prostate, but much more work in the laboratory and clinic is needed to validate these effects.
Different amounts of testosterone and other androgenic compounds were added to charcoal-stripped fetal calf serum, and the corresponding dose-response curves were obtained and compared with that of testosterone (Fig.
Now we found that addition of 1,25-dihydroxyvitamin D3, the active metabolite of vitamin D3, to nandrolone reduces the androgenic activity of nandrolone in vitro.
After the sampling, the frozen sera were defrosted and the levels of androgenic hormones were measured in both groups by means of the enzyme linked immunosorbentassay (ELISA) method.
Consistent with the Swiss CHD study, however, in the German cohort the shorter, more androgenic AR alleles (<22 CAG repeats) tended to be associated with a reduced risk for MI (Table 5).
What are they going to tell their kids when the kids begin questioning them about all the wonderful things that are supposed to happen to people who feed on anabolic androgenic steroids (AAS) and human-growth hormones (HGH)?
Between 20% and 50% of women aged 45 to 70 in the UK are thought to be taking some form of hormone replacement therapy - including oestrogen-only, combined oestrogen and progestogen HRT and tibolone, a steroid that combines oestrogenic, progestogenic and androgenic activity.
Most importantly, there was a lack of systemic androgenic side effects, and low to undetectable plasma levels of danazol, indicating that the drug was acting locally, said Dr.
Those researchers confirm androgenic activity--and, to a lesser extent, estrogenic activity--in Nebraska rivers downstream of cattle feedlots (SN: 1/5/02, p.
This analysis will assess her androgen sensitivity to determine if her hair loss has an androgenic origin.
Anageline shows a significant inhibiting effect (-18%) on the activity of 5-alpha reductase II, an enzyme responsible for follicle miniaturization characteristic of androgenic alopecia.