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The effect of tripeptide-copper complex on human hair growth in vitro

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Abstract

The tripeptide-copper complex, described as a growth factor for various kinds of differentiated cells, stimulates the proliferation of dermal fibroblasts and elevates the production of vascular endothelial growth factor, but decreased the secretion of transforming growth factor-β1 by dermal fibroblasts. Dermal papilla cells (DPCs) are specialized fibroblasts, which are important in the morphogenesis and growth of hair follicles. In the present study, the effects of L-alanyl-L-histidy l-L-lysine-Cu2+ (AHK-Cu) on human hair growthex vivo and cultured dermal papilla cells were evaluated. AHK-Cu (10-12-10-9M) stimulated the elongation of human hair folliclesex vivo and the proliferation of DPCsin vitro. Annexin V-fluorescein isothiocyanate/propidium iodide labeling and flow cytometric analysis showed that 10-9M AHK-Cu reduced the number of apoptotic DPCs, but this decrease was not statistically significant. The ratio of Bcl-2/Bax was elevated, and the levels of the cleaved forms of caspase-3 and PARP were reduced by treatment with 10-9M AHK-Cu. The present study proposed that AHK-Cu promotes the growth of human hair follicles, and this stimulatory effect may occur due to stimulation of the proliferation and the preclusion of the apoptosis of DPCs.

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Correspondence to Kyu Han Kim.

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Pyo, H.K., Yoo, H.G., Won, C.H. et al. The effect of tripeptide-copper complex on human hair growth in vitro. Arch Pharm Res 30, 834–839 (2007). https://doi.org/10.1007/BF02978833

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  • DOI: https://doi.org/10.1007/BF02978833

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