28 citations
,
January 2009 in “Cellular & Molecular Biology Letters” DHT deficiency increases iNOS expression in rat testis and epididymis.
20 citations
,
October 2017 in “Stem Cell Reports” Alkaline Ceramidase 1 prevents early hair loss in mice by keeping hair follicle stem cells balanced.
8 citations
,
January 2015 in “Genetics and molecular research” Researchers found four key proteins that affect the development of a specific hair type in Yangtze River Delta white goats.
3 citations
,
May 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Skin lesions in Carney Complex are caused by a gene change in some skin cells that leads to increased pigmentation and may lead to tumors.
3 citations
,
March 2014 in “Turkderm” Hair loss in men can be slowed or reversed with treatments like minoxidil and finasteride, but it resumes if treatment stops. It may also indicate early heart disease and obesity.
2 citations
,
June 2016 in “International journal of experimental pathology” Human skin has less GDNF and its receptor with age.
January 2013 in “Reproductive Biology”
20 citations
,
January 2012 in “Journal of Steroids & Hormonal Science” The document concludes that there are still unknowns about the effectiveness, risks, and detection of performance-enhancing drugs, and doping remains a challenge.
7 citations
,
January 2013 in “BioMed research international” Hair follicles and deer antlers regenerate similarly through stem cells and are influenced by hormones and growth factors.
4 citations
,
September 2025 in “Biomolecules” The effect of GLP-1 RAs on erectile function is unclear and needs more research.
October 2022 in “Endocrine journal” Testosterone and dihydrotestosterone treatments can help with penile growth in males with 5α-reductase type 2 deficiency, with dihydrotestosterone being more effective in infancy.
43 citations
,
January 2006 in “PubMed” Androgens and estrogens are crucial for male reproductive health, affecting hormone levels and tissue function.
133 citations
,
August 1969 in “Science” Melatonin causes weasels to grow white fur and become reproductively inactive.
8 citations
,
January 2012 in “General and Comparative Endocrinology” 5α-Reductase helps regulate hormone action in toad testes, especially during breeding season.
138 citations
,
November 1974 in “Biological reviews/Biological reviews of the Cambridge Philosophical Society” Males and females differ in lifespan, growth, organ size, metabolism, and brain structure, with females generally living longer and maturing earlier.
December 2024 in “Medicine” Gut bacteria may affect hair loss risk.
February 2023 in “Vaccines” COVID-19 may harm male reproductive health and lower testosterone levels, potentially affecting fertility and causing erectile dysfunction. More research is needed.
1 citations
,
August 2013 in “PubMed” Testosterone changes reduce thyroxin levels in rats.
6 citations
,
November 2018 in “Journal of molecular histology” Testosterone increases fluid secretion and aquaporin expression in the vas deferens, which is important for male fertility.
1 citations
,
November 2024 in “EMBO Reports” Deleting Gpr54 speeds up hair growth and regeneration.
26 citations
,
December 1999 in “Journal of Investigative Dermatology” Certain genes are linked to wool follicle structure and function, but not hair cycle regulation.
20 citations
,
November 2020 in “Stem Cell Research & Therapy” Enhanced stem cells from the placenta can help treat Graves' eye disease by stopping fat cell growth.
14 citations
,
April 2016 in “PloS one” The KRTAP11-1 gene promoter is crucial for specific expression in sheep wool cortex.
8 citations
,
October 2024 in “Frontiers in Cell and Developmental Biology” Telocytes help organize male reproductive tissues and their changes can lead to diseases.
6 citations
,
December 2023 in “Journal of Clinical Medicine” Abnormal growth factor metabolism may link psoriasis and metabolic syndrome, and obesity can affect psoriasis treatment effectiveness.
6 citations
,
July 2018 in “Steroids” Testosterone changes how certain channels work in male rat reproductive tracts, affecting fertility-related fluid balance.
3 citations
,
November 2021 in “Frontiers in Genetics” Certain genes are linked to the quality of cashmere in goats.
May 2026 in “Nature Communications” Targeting catecholaminergic signaling may help treat keloid scars.
March 2025 in “Aging Cell” Reducing IGF-1 can help rejuvenate hair follicles and prevent hair graying and loss.
19 citations
,
June 2021 in “The world journal of men's health” Using anabolic-androgenic steroids can harm men's reproductive health and increase the risk of heart problems and death.