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- W2062680123 abstract "Pathogenetic mechanisms in androgenetic alopecia are not yet fully understood; however, it is commonly accepted that androgens like testosterone (T) and 5α-dihydrotestosterone (5α-DHT) inhibit hair follicle activity with early induction of the catagen. Thus, we investigated the influence of T and 5α-DHT on proliferation, cell death and bcl-2/bax expression in cultured dermal papilla cells (DPC) from nonbalding scalp regions of healthy volunteers. T and 5α-DHT induced apoptosis in DPC in a dose-dependent and time-related manner; in addition a necrotic effect due to T at 10<sup>–5</sup><i>M</i> was found. Interestingly, bcl-2 protein expression was decreased in T- and 5α-DHT-treated cells, leading to an increase in the bax/bcl-2 ratio. In addition, T and 5α-DHT induced proteolytic cleavage of caspase 8 and inhibited proliferation of DPC at 10<sup>–5</sup><i>M</i>. High concentrations of T and 5α-DHT were needed to induce apoptotic effects in DPC. These data suggest that DPC from nonbalding scalp regions do have the capacity to undergo apoptosis, but need a high androgen stimulus. The present study provides an interesting new pathogenetic approach in androgenetic alopecia." @default.
- W2062680123 created "2016-06-24" @default.
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- W2062680123 date "2006-01-01" @default.
- W2062680123 modified "2023-09-27" @default.
- W2062680123 title "Effect of 5α-Dihydrotestosterone and Testosterone on Apoptosis in Human Dermal Papilla Cells" @default.
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- W2062680123 doi "https://doi.org/10.1159/000095251" @default.
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