January 2019 in “Springer eBooks” PRP and LLLT can improve hair growth in AGA, but more research needed.
January 2015 in “Journal of Cytology and Histology” Hair loss in Androgenetic Alopecia is not caused by damage to follicular stem cells.
209 citations
,
September 2008 in “Dermatologic Therapy” Androgens can both increase and decrease hair growth in different parts of the body.
149 citations
,
June 2002 in “Veterinary record/The veterinary record” Trilostane effectively improved symptoms in dogs with a certain adrenal gland disorder.
120 citations
,
November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
98 citations
,
July 2014 in “Trends in Molecular Medicine” Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.
98 citations
,
February 2007 in “Seminars in Cell & Developmental Biology” Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.
91 citations
,
May 2003 in “American Journal of Pathology” Prolactin affects hair growth cycles and can cause early hair follicle regression.
85 citations
,
May 2019 in “Journal of neuroendocrinology” The article concludes that better understanding gene regulation related to seasonal changes can offer insights into the mechanisms of seasonal timing in mammals.
66 citations
,
July 2015 in “Journal of Molecular Biology” The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.
64 citations
,
January 2010 in “The FASEB Journal” Prolactin affects the production of different keratins in human hair, which could lead to new treatments for skin and hair disorders.
62 citations
,
July 1993 in “Journal of Investigative Dermatology” Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.
53 citations
,
November 2006 in “Journal of Endocrinology” Prolactin slows down hair growth in mice.
50 citations
,
August 1999 in “Experimental dermatology” The control system for hair growth cycles is not well understood and needs more research.
32 citations
,
May 2018 in “Cell Cycle” Melatonin helps Cashmere goats grow more hair by affecting certain genes and cell pathways.
24 citations
,
March 2001 in “Journal of Endocrinology/Journal of endocrinology” Red deer only have androgen receptors in neck hair cells for mane growth during breeding season.
18 citations
,
January 2020 in “Ecology and evolution” Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.
17 citations
,
December 2003 in “Veterinary dermatology” Some masked palm civets in Japan have a skin disease caused by mites.
10 citations
,
June 2005 in “Small ruminant research” Melatonin treatment may increase cashmere production in Spanish goats.
10 citations
,
April 1995 in “Animal Science/Animal science” Melatonin implants can change the seasonal prolactin levels and hair growth in adult cashmere goats but not in juveniles, and don't delay spring moult for better fiber harvesting.
8 citations
,
July 2011 in “Animal science journal” Keratin 33A is a key protein in goat winter coats, especially in high-producing breeds.
7 citations
,
January 2001 in “Annales de zootechnie” Melatonin treatment increases wool production and improves fiber quality in angora rabbits.
April 2026 in “npj Regenerative Medicine” Melanocyte stem cells in hair follicles are key to understanding and potentially preventing hair graying.
Cellular flows and tissue mechanics guide feather follicle formation in birds.
October 2023 in “Animal production science” Vitamin A deficiency changes cattle hair structure, while pregnancy may improve it, suggesting hair can indicate cattle health.
Researchers found a genetic link for hereditary hair loss but need more analysis to identify the exact gene.
January 2016 in “Elsevier eBooks” The conclusion is that grasping how cells determine their roles through evolution is key, with expected progress from new research models and genome editing.
989 citations
,
August 2007 in “The Lancet” PCOS is a complex condition with major health impacts, needing more research for better diagnosis and treatment.
393 citations
,
November 2000 in “Archives of General Psychiatry” Testosterone is important for men's sexual function, may help some women's sexual desire, while other hormones and neurotransmitters also play complex roles in sexual behavior.
351 citations
,
February 2010 in “Nature Cell Biology” Basal cell carcinoma mostly starts from cells in the upper skin layers, not hair follicle stem cells.