58 citations
,
June 1987 in “Archives of Dermatological Research” This study found that epidermal and fibroblast growth factors increased proliferation of human hair bulb papilla cells and root sheath fibroblasts in vitro, while hydrocortisone decreased it and minoxidil had no effect.
9 citations
,
March 1987 in “British Journal of Dermatology” This study found that epidermal growth factor and fibroblast growth factor accelerated proliferation of human hair bulb papilla cells and root sheath fibroblasts cultured in vitro.
5 citations
,
January 1989 This study found that testosterone and dihydrotestosterone inhibit the growth rates of hair bulb papilla cells and root sheath fibroblasts, especially at higher doses, while estradiol was ineffective.
47 citations
,
April 2001 in “Journal of Dermatological Science” This study found that insulin-like growth factor-I and hepatocyte growth factor increased the chemotactic migration of human hair outer root sheath cells, suggesting these factors have both growth stimulatory and chemotactic effects.
43 citations
,
September 2017 in “Lasers in Surgery and Medicine” This study found that LED light irradiation induced proliferation and migration of human outer root sheath cells, potentially through the stimulation of the Wnt/β-catenin and ERK signaling pathways.