Journal of Southern Medical University ›› 2004, Vol. 24 ›› Issue (09): 1040-1041,1044.

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Hominis placenta promotes melanocyte proliferation,melanin synthesis and tyrosinase activity in vitro

YANG Liu, DENG Yan   

  1. 第一军医大学中医系, 广东, 广州, 510515
  • Online:2004-09-20 Published:2004-09-20

Abstract: Objective To investigate the effects of Hominis placenta on melanocytes and tyrosinase activity in vitro. Methods MTT assay was used to assess the proliferation of melanocytes treated with Hominis placenta. Hunt method was employed to determine melanin synthesis and the oxidation rate of DL-dopa to evaluate the tyrosinase activity. Results Hominis placenta promoted melanocyte proliferation (P<0.01) and significantly increased the cell number (P<0.01), melanin synthesis (P<0.01), with the optimal concentration of 0.1g/L (P<0.01), and also enahnced tryosinase activity (P<0.01) at the optimal concentration of 1 g/L (P<0.01). Conclusion Hominis placenta promotes proliferation, melanin synthesis and tyrosinase activity of the melanocytes.

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