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Background Cellular and cell-derived components of adipose-derived tissue for the purposes of dermatologic and aesthetic rejuvenation applications have become increasingly studied and integrated into clinical practice. The hair follicle goes through phases of growth, regression, and quiescence, and it is suspected that adipocytes secrete factors to promote activation of hair follicles dermal papilla cells, increasing migration, and proliferation in vitro; as well as increasing conversion of hair follicles from the telogen to anagen phase in vivo. Objectives Evaluation of efficacy and safety of adipose-derived adult stem cells (ADSCs) injection in hair follicle regeneration in female pattern hair loss (FPHL). Methods 33 patients were included and divided into 3 groups according to Sinclair’s classification according to severity. ADSCs were extracted from lipoaspirate and injected into the frontoparietal scalp. Patients were assessed clinically, trichoscopically and immunohistochemically. Results At week 24, there was improvement of hair thickness and count, both in frontal and occipital areas. Histopathological and immunohistochemical assessment at week 12 showed decrease of perifollicular inflammation and decrease of DKK-1 immunostaining. Conclusion The use of ADSCs in treatment of FPHL in subjects included in this study showed improvement of perifollicular inflammation, in addition to density and thickness of hair.

Clinical, Trichoscopic And Immunohistochemical Evaluation of Autologous Adipose Derived Adult Stem Cell Injection in the Treatment of Female Pattern Hair Loss