数据之源，洞见之始

numerous mammalian tissues

Androstane-3,17-diol is a metabolite of dihydrotestosterone. It doesn't bind androgen receptors, but efficiently binds the estrogen receptor beta and inhibits prostate cancer cell migration through the activation of estrogen receptor beta (PMID: 15958594).

Androstane-3alpha,17beta-diol is an androstane-3,17-diol, a 3alpha-hydroxy steroid and a 17beta-hydroxy steroid.

The unspecified form of the steroid, normally a major metabolite of testosterone with androgenic activity. It has been implicated as a regulator of gonadotropin secretion.3a,17a-Dihydroxy-5b-androstane is a metabolite of natural androgens (testosterone, epitestosterone, dihydrotestosterone, and dehydroepiandrosterone) present in small amount in the urine of normal individuals (PMID 9381514).

5-tridecylresorcinol

The unspecified form of the steroid, normally a major metabolite of testosterone with androgenic activity. It has been implicated as a regulator of gonadotropin secretion.

3beta,17alpha-Dihydroxy-5alpha-androstane is a steroid found in the monosulfate fraction of normal human feces. Several steroids identified in the disulfate fraction of human bile are found in the monosulfate fraction of human feces, indicating partial hydrolysis of diconjugates in the intestine. The androstanediols and pregnanediols found in the feces are primarily of a 3beta-hydroxy-5alpha- or 3beta-hydroxy-5beta-structure, whereas those in the bile are of a 3alpha-hydroxy-5alpha- or 3alpha-hydroxy-5beta-structure. This suggests the conversion of a 3alpha-hydroxyl to a 3beta-hydroxyl in the intestine in vivo. 3beta,17alpha-Dihydroxy-5alpha-androstane is also found unconjugated in normal human plasma (PMID: 4245755, 4223807, 4321841, 1769135).

5alpha-Androstane-3alpha,17a-diol belongs to the class of organic compounds known as androgens and derivatives. These are 3-hydroxylated C19 steroid hormones. They are known to favour the development of masculine characteristics. They also show profound effects on scalp and body hair in humans. 5alpha-Androstane-3alpha,17a-diol is a steroid found in feces from pregnant women (PMID: 5440628), the monosulfate and disulfate fractions from normal human feces (PMID: 4245755), and the glucuronide and mono- and disulphate conjugates of neutral steroids in human bile (PMID: 5493463).

Androstanediol is a metabolite of dihydrotestosterone, itself a metabolite of testosterone. Androstanediol is implicated in the regulation of gonadotropin secretion. As a metabolite of dihydroxytestosterone formed in the peripheral tissues, androstanediol and androstnediol-glucuronide can be used to estimate peripheral androgen activity. Androstanediol is a potential GABA (A) receptor-modulating neurosteroid with anticonvulsant properties and hence could act as a key neuromodulator in the central nervous system. It is considered that androstanediol has hedonic effects; therefore it is anticipated that androgens that are readily metabolized to androstanediol may have higher abuse potential than androgens that are not as easily metabolized to androstanediol. These results add to the growing literature indicating that athletes and non-athletes may be at considerable risk when they abuse androgens. (PMID: 11500254, 16040068, 11744084).

Etiocholanediol is one of the compounds tested to allow for the unequivocal identification of the presence of urinary anabolic steroids and metabolites banned for use in sport by athletes. In urine samples collected for anti-doping purposes with moderately elevated testosterone and epitestosterone ratio, or when a suspicion of manipulation of the sample occurs, Etiocholanediol is tested for further clarification. It is worth mentioning that the concentration parameters vary enormously according to the gender of the subjects, ethnic origin, the urine collection period (before or after effort, period of the day) and the hydration state of the athlete. Urinary steroid data using several methodologies are not appropriate for identification purposes and to an extent not unique to individuals. (PMID: 16337352, 16338181, 16337352, 17260133).

Dihydroandrosterone is a major metabolite of testosterone. Dihydroandrosterone is the main steroid produced by the immature ovary; at puberty the synthesis of steroids shifts toward 4-ene-3-oxo steroids. testosterone 5a-reduced metabolites, including dihydrotestosterone are produced in the anterior pituitary and the central nervous system. Anabolic androgen steroid (AAS) are one of primary performance-enhancing substances abused by athletes. To defeat doping controls, athletes changed to take endogenous androgens from the application of synthetic AAS. testosterone was one candidate of endogenous androgens abused in sports. testosterone and its relevant steroids in urine is detected and monitored with GC/MS. The abuse of anabolic-androgenic steroids (AS) is a growing problem; however, the effects and mechanisms underlying their addictive effects are not well understood. (PMID: 17112575, 6243214, 491593, 491592).

This compound belongs to the family of Androgens and Derivatives. These are hydroxylated C19 steroid hormones. They are known to favour the development of masculine characteristics. They also show profound effects on scalp and body hair in humans.

Methyl linolenate is a fatty acid methyl ester derived from alpha-linolenic acid. It has a role as a plant metabolite and an insect attractant. It is functionally related to an alpha-linolenic acid. Methyl linolenate is a natural product found in Mikania goyazensis, Anchietea salutaris, and other organisms with data available.