4 citations
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May 2022 in “International journal of molecular sciences” Heat-killed Enterococcus faecalis EF-2001 may promote hair growth and transition hair follicles to the growth phase.
January 2006 in “Chinese Journal of Dermatology” The study investigated the location and proliferation of human hair follicle stem cells, identifying two distinct stem cell reservoirs in the hair follicles: one in the bulge area and another in the outer root sheath above the hair bulb. The research found that stem cell proliferation occurred only when the follicle epithelium was co-cultured with mesenchymal cells, specifically dermal papilla cells. The study concluded that mesenchymes are essential for stem cell proliferation, and the resulting colonies contained juvenile cells, mature keratinocytes, and apoptotic cells, indicating different stages of stem cell development.
Some factors can either promote or inhibit hair growth.
56 citations
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July 2005 in “Experimental Dermatology” Injected human hair follicle cells can create new, small hair follicles in skin cultures.
94 citations
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February 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” EGF makes hair follicles grow longer but stops hair production.
58 citations
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June 1987 in “Archives of Dermatological Research” EGF and FGF boost hair cell growth, hydrocortisone slows it, and minoxidil doesn't affect it.
9 citations
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March 1987 in “British Journal of Dermatology” The study conducted by K. Katsuoka and colleagues in 1987 demonstrated that epidermal growth factor (EGF) and fibroblast growth factor (FGF) significantly accelerated the proliferation of human hair bulb papilla cells and root sheath fibroblasts when cultured in vitro. This finding suggested that EGF and FGF could play a crucial role in promoting hair growth by enhancing the proliferation of cells essential for hair follicle development. The research provided early insights into the potential therapeutic applications of growth factors in treating hair loss conditions.
114 citations
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September 1985 in “Journal of Investigative Dermatology”