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This review highlights the potential of natural compounds like terpenoids, flavonoids, and polyphenols in promoting hair regrowth for those with alopecia areata by activating growth pathways and modulating immune responses, but calls for further research to confirm their therapeutic utility.

In this study, Hedgehog signaling in dermal papilla fibroblasts was found to accelerate hair growth and induce follicle multiplication in mice via the SCUBE3/TGF-β pathway, with some effects observed in human scalp hair follicles.

This study found that a lotion containing specific plant extracts significantly increased the number of anagen hairs and the anagen/telogen ratio in subjects with androgenetic alopecia after three months of use.

This review discusses the role of BMP/Wnt signaling in regulating stem cell homeostasis and activation but reports no new experimental findings.

In this study, researchers found that topical application of the diabetes medication Sitagliptin in mice accelerates hair follicle regeneration and reduces fibrosis, suggesting it could be repurposed to treat hair loss conditions like alopecia.

This study reported that an HS-associated NCSTN mutation in iPSC-derived skin organoids led to altered hair follicle stem cell differentiation and increased expression of proteins linked to HS inflammation.

This study found that increased MSI2 expression in hair follicle stem cells can delay hair growth by maintaining stem cell quiescence and repressing Hedgehog signaling.

This study identified a crucial Gli2-Serpinh1 regulatory axis that regulates fibroblast state transitions during skin wound healing, shedding light on fibroblast heterogeneity and suggesting potential precision regenerative therapies.

This research reports that after genotoxic stress from ionizing radiation or chemotherapy, hair follicles can utilize progenitor cells from transit-amplifying compartments, not quiescent stem cells, for repair, suggesting a potential therapeutic approach to prevent therapy-induced hair loss by activating these progenitors.

This study observed that areola formation in mice requires exposure to pregnancy hormones and mechanical strain, beyond individual stimuli like hormonal milieu or strain alone.

In this study, the researchers optimized a method for culturing melanocyte precursors from hair follicles and found that 1,25-dihydroxyvitamin D3 significantly promotes their differentiation and melanin synthesis.

This study found that the natural product Shi-Bi-Man significantly promoted hair regeneration in cynomolgus monkeys, increasing hair follicle number and activation by boosting specific protein markers and interactions in Laminin-related pathways.

This study reveals an antagonistic competition between BMP and Wnt signaling within stem cells, influencing their fate towards hair germ characteristics based on the BMP/Wnt activity ratio.

This review provides an overview of natural product-derived small molecule modulators of the Wnt signaling pathway, exploring their potential as therapeutic agents for tissue regeneration and cancer treatment.

This article is from the ASPS Education Network and does not report any new research findings.

This review examines clinical data on the efficacy and safety of JAK inhibitors used for immune-mediated conditions beyond rheumatoid arthritis, highlighting their potential therapeutic roles in various inflammatory diseases.

This review examines the JAK/STAT signaling pathway's significance in inflammatory skin diseases and evaluates the efficacy and safety of oral and topical JAK inhibitors for treating vitiligo and alopecia areata. Results are not reported in this study.

This study found that skin bacteria promote regeneration in wound-induced hair follicle neogenesis, suggesting a role for IL-1β signaling and challenging the belief that infection inhibits healing.

The researchers reported that dPGS-PCL as a carrier improved the penetration of tofacitinib in an ex-vivo human skin model compared to free tofacitinib, but did not show significant differences in inhibiting IL-6 and IL-8 during short incubation.

This study found that Oncostatin M, via JAK-STAT5 signaling, keeps hair follicle stem cells inactive, and its removal leads to hair growth initiation in mice.

The researchers reported that dsRNA from damaged skin activates TLR3, promoting hair follicle regeneration, while TLR3-deficient animals fail to initiate this process, suggesting potential therapeutic approaches for hair neogenesis.

This study found that the humanin analogue HNG significantly promoted hair growth in vitro and in vivo by prolonging the anagen phase and inhibiting hair follicle cell apoptosis in mice.

This study found that stimulating olfactory receptor OR2AT4 in human hair follicles with Sandalore® may slow catagen development and reduce keratinocyte apoptosis, suggesting potential implications for hair growth management.

This study found that the circadian clock regulates the activation state of murine epidermal stem cells, affecting tissue homeostasis and susceptibility to tumorigenesis when disrupted.

This review highlights advancements in the understanding and treatment of alopecia areata, noting that the approval of oral Janus kinase inhibitors like baricitinib and ritlecitinib marks a significant development in managing severe cases of this autoimmune condition.

This research found that reduced expression of SIRT1 in human scalp tissue may contribute to alopecia areata development by inducing immune-inflammatory responses in hair follicle cells, suggesting that SIRT1 plays a regulatory role in hair follicle immunity.

This review discusses the role of various hormones in diffuse hair loss and emphasizes the need for further research to clarify their complex interactions and potential therapeutic implications, but reports no new clinical results.

In this study, researchers developed a promising transdermal agent using Triton X-100-modified polyethyleneimine that successfully delivered genetic material to hair follicle cells in mice, potentially alleviating hair loss due to androgenetic alopecia by promoting cell proliferation and inhibiting apoptosis.

In this study, researchers found that deleting TNFα in PKCε transgenic mice reduced the development of cutaneous squamous cell carcinomas induced by UV radiation or a chemical protocol.

This study found that a specific macrophage subpopulation in the dermis helps maintain hair follicle stem cell quiescence through cytokine-mediated signaling.