Case Reports in Dermatological Medicine / 2021 / Article / Fig 1

Case Series

A Multimodal Hair-Loss Treatment Strategy Using a New Topical Phytoactive Formulation: A Report of Five Cases

Figure 1

The hair follicle cycle showing the effects of various cytokines, growth promoters, and growth inhibitors regarding different stage transitions. BDNF, brain-derived neurotrophic factor; BMP-2/4, bone morphogenetic protein-2/4; col 17 A1, collagen-type XVII α 1 chain; DKK, Dickkopf-related protein; FGF5/7/18, fibroblast growth factor 5/7; GDNF, glial cell line-derived neurotrophic factor; HGF, hepatocyte growth factor; IGF-1, insulin-like growth factor-1; IL-1/6, interleukin-6; KGF, keratinocyte growth factor; PG D2/E2/F2a, prostaglandin D2/E2/F2a; SCF, stem cell factor; SHH, sonic hedgehog; TGF, transforming growth factor; TNF-α, tumor necrosis factor α; VDR = vitamin D receptor; WNT, wingless-type integration site.