research Testosterone and doping control
The document concludes that better biomarkers are needed to detect long-term oral testosterone use in athletes.
Search
for
Sort by
Research
30 / 1000+ results 
research Biochemical Roles of Testosterone and Epitestosterone to 5α-Reductase as Indicators of Male-Pattern Baldness
High testosterone to epitestosterone ratio in hair could predict male-pattern baldness.
research Optimization of LC method for the determination of testosterone and epitestosterone in urine samples in view of biomedical studies and anti-doping research studies
Researchers developed a reliable method to measure testosterone and epitestosterone in urine for medical and anti-doping use.
research Simultaneous determination of androgens and prostaglandins in human urine using ultra-high-performance liquid chromatography–tandem mass spectrometry
Researchers developed a reliable way to measure hormones in urine, showing that a baldness treatment doesn't change hormone levels.
research High resolution full scan liquid chromatography mass spectrometry comprehensive screening in sports antidoping urine analysis
The method effectively detects banned substances in urine for sports antidoping.
research Gender Differences in Skin Aging and the Changing Profile of the Sex Hormones with Age
The document concludes that there are still unknowns about the effectiveness, risks, and detection of performance-enhancing drugs, and doping remains a challenge.
research Female Hirsutism: Pathophysiological Considerations and Therapeutic Implications*
Excessive hair growth in women often has no known cause and is not linked to race or other hormonal symptoms.
research Evidence-based approach to cutaneous hyperandrogenism in women
The conclusion is that oral contraceptives and antiandrogens can treat hirsutism and acne in women with cutaneous hyperandrogenism, but more research is needed for effective treatments, especially for hair loss.
research Doping-Control Analysis of the 5α-Reductase Inhibitor Finasteride: Determination of Its Influence on Urinary Steroid Profiles and Detection of Its Major Urinary Metabolite
Finasteride affects urinary steroid profiles and can potentially hide steroid abuse in sports drug testing.
research Revisiting hyper- and hypo-androgenism by tandem mass spectrometry
The document concludes that using LC-MS/MS for measuring androgens is more accurate than older methods, but it needs careful validation and standardized references to be most effective.
research Androgen antagonists in androgen target tissues
Antiandrogens have important biological effects, but more research is needed to understand them fully and compare their effectiveness and side effects to other treatments.
research Female Pattern Hair Loss
Over 50% of women over 50 experience hair loss, with minoxidil being the only proven effective treatment.
research Enzyme-linked immunosorbent assays for doping control of 5α-reductase inhibitors finasteride and dutasteride
New tests detect finasteride and dutasteride in urine quickly and easily.
research Prostate-Specific Antigen as a Marker of Hyperandrogenism in Women and Its Implications for Antidoping
PSA levels could help detect illegal steroid use in female athletes but face challenges like cost and PCOS prevalence.
research Serial Hydrolysis for the Simultaneous Analysis of Catecholamines and Steroids in the Urine of Patients with Alopecia Areata
A new method was created to analyze certain chemicals in the urine of alopecia areata patients, revealing they have higher metanephrine content. This method can also be used for other related diseases.
research Influence of Saw palmetto and Pygeum africana extracts on the urinary concentrations of endogenous anabolic steroids: Relevance to doping analysis
Taking Saw palmetto and Pygeum africana can change the levels of certain steroids in urine, which could cause confusion in doping tests.
research Long-term physiological trends and their drivers: linking hair hormone concentrations with telemetry data in GPS-collared Serengeti wildebeest
Wildebeest stress and hormone levels are influenced by food availability, human presence, and reproductive cycles.
research Review of the effects of 17α-estradiol in humans: a less feminizing estrogen with neuroprotective potential
17α-estradiol is a safe estrogen that might protect the brain and doesn't cause feminization, needing more research for treating brain diseases.
research Evaluation of androgens in the scalp hair and plasma of patients with male-pattern baldness before and after finasteride administration
Finasteride lowers scalp and blood DHT levels, potentially treating male-pattern baldness.
research The Androgen Receptor and Its Use in Biological Assays: Looking Toward Effect-Based Testing and Its Applications
Scientists have developed a new method to detect steroid abuse in athletes using cell-based tests, which could be the future of anti-doping methods.
research Untargeted Metabolomics and Steroid Signatures in Urine of Male Pattern Baldness Patients after Finasteride Treatment for a Year
Finasteride treatment changes urine metabolomics and steroid signatures, potentially monitoring effectiveness but may cause sexual side effects.
research 2 Changes in the gonadal and adrenal steroid patterns during puberty
research Intracrine androgen biosynthesis, metabolism and action revisited
The document concludes that blocking the internal pathways that create androgens might help treat cancers that depend on sex hormones.
research Clinical biochemistry of dihydrotestosterone
Understanding how DHT works is important for diagnosing and treating hormone-related disorders.
research Simultaneous quantitation of nine hydroxy-androgens and their conjugates in human serum by stable isotope dilution liquid chromatography electrospray ionization tandem mass spectrometry
A new method accurately measures nine specific hormones in human blood.
research Green and Emerging Microextraction Strategies for Bioanalytical Determination of Hormones: Trends, Challenges, and Applications
Microextraction techniques improve hormone testing while being environmentally friendly.
research Testosterone: The Male Sex Hormone
More research is needed to understand how testosterone is maintained in adult males.
research Epitestosterone
Epitestosterone may counteract testosterone's effects and has roles in body processes like prostate growth and hair distribution.
research Epitestosterone—an endogenous antiandrogen?
Epitestosterone may act as a weak antiandrogen and can inhibit an enzyme involved in testosterone metabolism.
research 5α-reduction of epitestosterone is catalysed by human SRD5A1 and SRD5A2 and increases androgen receptor transactivation
5α-reductases increase epitestosterone's effect on androgen receptors.