TLDR Thyroid hormone receptor β1 is found in human hair follicles and helps them survive.
Researchers investigated the expression of thyroid hormone receptors (TRs) in human hair follicles and found that TRβ1 was the predominant form. Immunoreactive TRs were present in both dermal and epithelial compartments of the pilosebaceous unit. Additionally, they studied the effects of 3,3', 5-triiodo-L-thyronine (T3) on hair follicle survival in vitro and discovered that physiological levels of free T3 significantly enhanced hair follicle survival.
5 citations
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March 2009 in “Skin Pharmacology and Physiology” DNA flow cytometry effectively evaluates how different conditions affect hair growth cell activity.
34 citations
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September 1997 in “Acta Dermato Venereologica” RXR agonists may promote hair growth in humans.
23 citations
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July 1997 in “British Journal of Dermatology” The inner root sheath is vital for hair follicle stability during growth changes.
28 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Dermal papilla cells are crucial for hair growth and can induce new hair follicles.
385 citations
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November 1990 in “Journal of Cell Science” Human hair follicles can grow in a lab setting.
