Abstract
Platelet-rich plasma (PRP) containing various growth factors has attracted attention in various medical fields. PRP has recently been used during hair transplantation to increase hair density. To investigate the effects of PRP on hair follicle (HF) reconstitution. Freshly isolated epidermal cells and cultured dermal papilla cells (DPCs) were mixed with various concentrations of activated PRP and transferred to a grafting chamber that was implanted onto the dorsal skin of nude mice. The chambers were removed 1week after grafting, and HF formation was monitored for 4weeks. We observed a significant difference (p<.05) in the number of newly formed follicles in the area of reconstituted skin (344±27 with 10% PRP vs 288±35 without PRP). PRP also shortened the time of hair formation significantly; the first hairs were observed in 18±1days using 10% PRP, versus 20±1days without PRP. A considerable effect of PRP on the time of hair formation and the yield of HF reconstitution was observed in this study. Considering the limited evidence available to judge its efficacy, further studies are required to investigate the mechanism of action of PRP.
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