24 citations
,
October 2012 in “The International Journal of Biochemistry & Cell Biology” In this study, testosterone protected female embryonic heart cells from metabolic stress by being converted into metabolites that activate estrogen receptors and up-regulate certain mitochondrial channel proteins.
23 citations
,
September 2021 in “Frontiers in Cellular and Infection Microbiology” This review highlights the mixed roles of testosterone in COVID-19, noting both potential benefits through anti-inflammatory effects and risks due to increased virus entry, with low testosterone linked to increased severity.
23 citations
,
June 2019 in “Bioanalysis” This study found that monitoring endogenous steroid metabolites in serum may improve the detection of testosterone doping by highlighting promising biomarkers.
23 citations
,
July 2015 in “The Journal of Membrane Biology” This study found that testosterone increased the expression of AQP-1, 5, and 7 in the uterus of rats, which may help explain the reduction in uterine fluid volume.
23 citations
,
March 2014 in “International Journal of Molecular Sciences” The study observed that testosterone reduced knee range of motion in ovariectomized female rats, potentially by downregulating specific relaxin receptor isoforms, with its effects mediated via dihydro-testosterone.
22 citations
,
January 2006 in “International Journal of Andrology” This study found that coadministration of 5α-reductase inhibitors with oral testosterone in oil significantly increases serum testosterone levels in medically castrated men compared to testosterone alone, with food intake minimally affecting these levels.
22 citations
,
February 2008 in “Biochemical and Biophysical Research Communications” Androgen effects on hair follicles vary by skin area.
22 citations
,
May 2003 in “Planta Medica” This study found that torilin from Torilis japonica fruit extract inhibited 5 alpha-reductase in vitro more effectively than alpha-linolenic acid but less effectively than finasteride.
22 citations
,
July 1990 in “Acta Dermato Venereologica” In this study, high concentrations of dihydrotestosterone and testosterone reduced the growth of human hair follicle cells in vitro, while high estradiol levels increased their growth.
21 citations
,
January 2021 in “Therapeutic Advances in Endocrinology and Metabolism” The researchers suggest that testosterone levels might influence COVID-19 susceptibility and severity, with low levels potentially protecting against infection but possibly worsening severe disease due to cytokine storm activation.
21 citations
,
December 2012 in “Maturitas” This study observed significant inter- and intra-individual variability in serum testosterone levels among women treated with subcutaneous testosterone implants, suggesting that therapy should be guided by clinical response rather than single serum measurements.
21 citations
,
October 2011 in “British Journal of Dermatology” This study found that subcutaneous testosterone therapy improved scalp hair growth in a majority of androgen-deficient women who previously reported hair thinning and did not report hair loss as a side effect.
21 citations
,
November 2010 in “Talanta” This study reported the development of a novel and reliable liquid chromatographic method to measure testosterone and epitestosterone in human urine, offering sensitive detection for doping control.
21 citations
,
January 2010 in “JOURNAL OF HEALTH SCIENCE” This study found that abietic acid from pine resin more effectively inhibits testosterone 5α-reductase than several plant extracts, suggesting potential for treating androgen-dependent diseases.
21 citations
,
January 2003 in “Skin pharmacology and physiology” This study found that dutasteride completely suppressed the formation of 5alpha-dihydro metabolites in cultured human skin cells, suggesting its potential use in acne and androgenetic alopecia.
21 citations
,
April 1995 in “Mayo Clinic Proceedings” This case study describes a testosterone-secreting adrenal adenoma in a 55-year-old woman, highlighting the presence of Reinke's crystalloids, suggesting that Leydig cells may play a role in such tumors.
20 citations
,
June 2015 in “Hormone Molecular Biology and Clinical Investigation” This study found that long-term finasteride therapy in men with BPH worsened erectile dysfunction and reduced testosterone levels, while these effects were not observed with tamsulosin.
20 citations
,
April 2021 in “Journal of Womens Health” This guideline provides evidence-based recommendations for prescribing testosterone therapy to women with hypoactive sexual desire disorder, noting a moderate therapeutic benefit but highlighting limited data and regulatory challenges.
19 citations
,
October 2019 in “BMC Neuroscience” This study found weak to very weak correlations between estradiol, progesterone, and testosterone levels in the cerebrospinal fluid and serum of males without cerebral disorders.
19 citations
,
April 2019 in “Journal of Midwifery & Women's Health” This article reviews contraceptive options for individuals on testosterone gender-affirming hormone therapy, highlighting unique risks and benefits for this population, but it reports no new clinical findings.
19 citations
,
June 1997 in “The Journal of Clinical Endocrinology & Metabolism” This case study details a 57-year-old woman with symptoms of androgen excess, including rapid hair growth and temporal balding, alongside abnormal testosterone levels and a history of chronic renal failure.
19 citations
,
January 1997 in “Endocrinology” This study observed that testosterone inhibits hair follicle epithelial cell proliferation in adult stumptailed macaques only when dermal papilla cells from bald scalps are present, with antiandrogen RU 58841 reversing this effect.
18 citations
,
October 2023 in “Nature Communications” In this study, male-pattern baldness was strongly associated with a higher risk of keratinocyte cancers, particularly squamous cell carcinoma and melanoma, likely due to increased sun exposure on the scalp rather than androgen levels.
18 citations
,
March 2020 in “Frontiers in Neuroendocrinology” This study suggests that synthetic steroid analogues or 5α-reductase modulation could be potential therapeutic strategies for nervous system disorders, but further research on their effects is necessary.
18 citations
,
May 2014 in “Menopause” This study found that a 5-mg daily dose of transdermal testosterone cream in postmenopausal women restored testosterone levels to those typical of premenopausal women.
18 citations
,
June 2016 in “PeerJ” In this study, testosterone increased the expression of epithelial sodium channel proteins and mRNAs in rat kidneys, suggesting a potential mechanism for its effect on blood pressure through enhanced sodium reabsorption.
18 citations
,
September 1972 in “British Journal of Pharmacology” In this study on male rats, parachlorophenylalanine treatment induced hypersexual behavior and hair loss linked to increased social interaction but had no effect on brain serotonin when testosterone was used instead.
17 citations
,
March 2016 in “Liver international” This study found that low serum testosterone and elevated serum oestrone in men with cirrhosis are associated with worse liver disease and adverse health outcomes, suggesting oestrone as a potential ill health marker.
17 citations
,
March 2020 in “Frontiers in Chemistry” This study isolated new geranylated coumarins from Mammea siamensis flowers and found that several of these compounds inhibit testosterone 5α-reductase.
17 citations
,
February 2019 in “Journal of Clinical Medicine” This article reviews guidelines for testosterone replacement therapy in late-onset hypogonadism, emphasizing the need for clear indications and appropriate testing before treatment, but provides no new research findings.