Track topics on Twitter Track topics that are important to you
Published on BioPortfolio: 2015-11-22T22:05:23-0500
In this case‐controlled, observational study, 24 subjects will participate in a 12‐hour blood collection with a single blood draw at +24 hours. 12 men will have low testosterone levels...
The study consists of generation of biological samples (in blood and urine) positive to Epoetin alfa for laboratories that wish to perform the analysis of doping controls and maintain accr...
Low testosterone is a condition that occurs when the body is unable to produce sufficient quantities of testosterone. The medical name for low testosterone is hypogonadism. Hypogonadism c...
Measure and evaluate the level of testosterone in blood, and determine the safety and tolerability following daily applications of testosterone gel. Subjects who complete this trial may pa...
The study is designed to identify and validate new protein biomarkers in blood related to testosterone activity. Thirty healthy young males underwent pharmaceutical castration to lower tes...
Transdermal testosterone has been used for years to treat patients with low testosterone symptoms. Clinically, we have monitored patients to evaluate results of testosterone absorption via blood serum...
We evaluated percutaneous penetration of topical testosterone and subsequent transfer to subcutaneous tissue, blood and saliva.
As men age, serum testosterone levels decrease. This reduction in testosterone levels may cause symptoms leading to hypogonadism. In addition, the presence of a varicocele can impair Leydig cell funct...
The present study aimed to estimate the effect of endurance training, two doses of testosterone, and the combination of these stimuli on the level of the endothelial proteins claudin, occludin, JAM-1,...
The aim of this study was to examine: 1) whether sport supplement use is related to doping and 2) whether sport supplement beliefs mediated this relationship. In Study 1, athletes (N = 598), complete...
Steroidal compounds related to TESTOSTERONE, the major mammalian male sex hormone. Testosterone congeners include important testosterone precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with androgenic activities.
A potent androgenic metabolite of TESTOSTERONE. Dihydrotestosterone (DHT) is generated by a 5-alpha reduction of testosterone. Unlike testosterone, DHT cannot be aromatized to ESTRADIOL therefore DHT is considered a pure androgenic steroid.
A potent androgenic steroid and major product secreted by the LEYDIG CELLS of the TESTIS. Its production is stimulated by LUTEINIZING HORMONE from the PITUITARY GLAND. In turn, testosterone exerts feedback control of the pituitary LH and FSH secretion. Depending on the tissues, testosterone can be further converted to DIHYDROTESTOSTERONE or ESTRADIOL.
An ester of TESTOSTERONE with a propionate substitution at the 17-beta position.
Illegitimate use of drugs for a desired effect in competitive sports; includes humans and animals.