51 citations
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November 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, researchers found that while both beard and scalp dermal papilla cells release similar autocrine growth factors, only beard cells increased production and response with testosterone, suggesting these factors enhance androgen-induced hair growth.
41 citations
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June 2006 in “Journal of Investigative Dermatology” This study identified three genes with significantly higher expression in androgen-sensitive beard dermal papilla cells compared to androgen-insensitive scalp cells, suggesting potential novel signaling pathways in hair follicles.
124 citations
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April 1992 in “Journal of Endocrinology/Journal of endocrinology” This study observed that cells from androgen-sensitive areas like the beard and scrotum showed higher androgen receptor levels compared to those from non-balding scalp areas, supporting the role of dermal papilla in follicle growth responses to androgens.
17 citations
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February 2016 in “Experimental Dermatology” This study found that SFRP2 enhances Wnt3a-mediated β-catenin signaling in human dermal papilla cells, with higher SFRP2 expression in beard cells correlating with increased trichogenicity.
34 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” This study suggests that androgens influence hair follicle behavior via the dermal papilla, using evidence from human and red deer cells with differing androgen responses as models.