185 citations,
December 2011 in “Molecular and cellular endocrinology” Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.
34 citations,
February 1993 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.
31 citations,
March 2017 in “Journal of The American Academy of Dermatology” Some breast cancer patients developed permanent hair loss after chemotherapy and hormonal therapy, showing patterns similar to common baldness and alopecia areata.
78 citations,
March 1987 in “Journal of The American Academy of Dermatology” Minoxidil promotes hair growth but stops working when discontinued.
6 citations,
April 2022 in “Journal of diabetes research” Type 2 diabetes slows down skin and hair renewal by blocking important stem cell activation in mice.
3 citations,
February 2019 in “Journal of Cosmetic Dermatology” The effects of estrogen on human scalp hair growth are unclear and need more research.
1 citations,
April 2018 in “Journal of dairy science” Dairy cows' skin and hair follicles change size and growth phase around the time they give birth.
January 2024 in “Journal of Natural Remedies” Solanum nigrum extract may help regrow hair.
854 citations,
February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Understanding hair follicle development can help treat hair loss, skin regeneration, and certain skin cancers.
102 citations,
July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
100 citations,
September 1999 in “British Journal of Dermatology” The study found that two enzymes linked to hair loss are located in different parts of the scalp, supporting a common treatment's effectiveness.
47 citations,
July 2005 in “British Journal of Dermatology” Topical vitamin D3 does not prevent hair loss from chemotherapy.
41 citations,
June 2006 in “Journal of Investigative Dermatology” Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.
29 citations,
June 2005 in “Journal of Zoo and Wildlife Medicine” Most hair loss in captive rhesus macaques is likely due to environmental and behavioral factors.
20 citations,
August 2005 in “Journal of Cutaneous Pathology” The protein ARA70/ELE1 is involved in male pattern baldness, and lower levels of its short form may lead to hair thinning.
October 2018 in “InTech eBooks” The gene Foxn1 is important for hair growth, and understanding it may lead to new alopecia treatments.
81 citations,
September 2009 in “Birth defects research” Different body areas in mice produce different hair types due to interactions between skin layers.
58 citations,
January 2006 in “Skin Pharmacology and Physiology” High levels of testosterone and 5α-DHT can lead to cell death in cells important for hair growth.
37 citations,
June 2017 in “Journal of Investigative Dermatology” Blocking a protein called CXXC5 with a specific peptide can stimulate hair regrowth and new hair growth in wounds.
36 citations,
June 2009 in “Nanomedicine” Fullerene nanomaterials help hair grow faster and increase hair follicles.
33 citations,
May 2006 in “Journal of Investigative Dermatology” PTHrP and its receptor can control blood vessel growth and hair development in mouse skin.
27 citations,
April 2017 in “British Journal of Dermatology” Hair loss involves immune responses, inflammation, and disrupted signaling pathways.
16 citations,
January 2016 in “Annals of Dermatology” Green tea component EGCG may help prevent hair loss by changing microRNA levels in certain scalp cells.
15 citations,
January 1995 in “Archives of dermatological research” OCT binds strongly to hair sheath cells and may affect skin and hair growth with fewer side effects than vitamin D3.
12 citations,
January 2018 in “Biomaterials Science” Softer hydrogel surfaces help maintain hair growth-related functions in skin cells.
9 citations,
July 2014 in “Experimental Dermatology” PTHRP agonists can stimulate hair growth, especially in damaged follicles, while antagonists may initially increase growth but ultimately inhibit it.
3 citations,
February 2021 in “Evidence-based Complementary and Alternative Medicine” The Chinese herbal supplement BeauTop can potentially boost hair growth and thickness by increasing a protein called Vascular Endothelial Growth Factor.
3 citations,
November 2005 in “Dermatologic Surgery” Aminoguanidine increases a specific growth signal in stored hair grafts, which may help them survive better after being transplanted.
1 citations,
November 2005 in “Dermatologic Surgery” Aminoguanidine increases VEGF in stored hair micrografts, potentially improving their viability after transplant.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.