Abstract
Sebaceous glands are known to affect hair growth. Nevus sebaceus, a sebaceous gland hamartomas, presents as hairless patches. In this study, cultures of nevus sebaceus sebocytes (NSS) and normal scalp hair follicle sebocytes (NS) were used in performance of microarray, RT-PCR, western blot assay and immunofluorescence staining. NSS- and NS-conditioned media were also added to the culture of outer root sheath cells (ORSCs), dermal papilla cells (DPCs) or normal scalp hair follicle sebocytes. Results of this study showed a decrease in the survival rate of ORSCs and DPCs and hair growth in the NSS-conditioned medium-treated group, compared with the control and NS-conditioned medium-treated groups. An increase in expression of fibroblast growth factor (FGF)-5, Dickkopf-1 and inflammatory cytokines and a decrease in expression of Wnt10b and Lef1 were observed. In conclusion, NSS showed an increase in expression of hair growth-suppressing bioactive factors, including FGF-5, and a decrease in expression of hair growth-stimulating factors.
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