کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3195864 | 1201661 | 2007 | 9 صفحه PDF | دانلود رایگان |
This article focuses on recent advances in melanocyte biology and physiology. The major function of this neural crest–derived cell is the production of melanins. A “three enzyme theory” in the initiation of pigmentation is put forward and backed up by recent findings. A receptor-independent role for α-MSH and the cofactor (6R)-l-erythro-5,6,7,8-terahydrobiopterin (6BH4) in the control of tyrosinase is described. The importance of intramelanosomal pH for melanogenesis is covered. Finally, the redundancy of the cAMP and IP3/DAG/calcium signal in melanocytes together with the downstream events are highlighted. The main message of this article is that the intracellular H2O2- redox-equilibrium controls melanocyte function in a concentration-dependent manner.
Journal: Dermatologic Clinics - Volume 25, Issue 3, July 2007, Pages 283–291