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This study observed that overexpression of TGF-alpha in transgenic mice led to thicker epidermis and stunted hair growth, particularly in regions with normally thick skin and low hair density.

This study found that mice with a disrupted TGFα gene display a curly whisker-coat phenotype, similar to waved-1 mice, suggesting TGFα's crucial role in skin architecture and hair development.

This study suggests that TGF-alpha may function in an autocrine or juxtacrine manner rather than promoting cell proliferation during hair growth cycles in ferrets and sheep.

This study found that αvβ6 integrin inhibits keratinocyte proliferation during wound healing and hair regeneration, suggesting its downregulation may enhance recovery and influence epidermal stem cell behavior.

This study found that the dermal sheath smooth muscle regulates hair follicle progenitor cell death during hair regression through mechanical signaling of the TGF-β pathway.

This study observed that in mouse fetuses, reticular contraction by actomyosin is involved in dermal regeneration, and differences in actin and α-SMA localization may determine the switch between regeneration and scar formation, suggesting potential insights for wound regeneration therapy.

This study found that Punica granatum ethanolic leaf extract may alleviate skin fibrosis in rats by modulating inflammation-related pathways and reducing dermal alterations.

This study found that ectopic expression of Whn in transgenic mice caused impaired differentiation in epidermis and hair follicles, with hair growth defects and severe urinary tract issues leading to hydronephrosis.

Growth factors can either promote or inhibit hair follicle cell growth and collagen breakdown.

This study observed that human anagen hair follicles can grow in vitro when maintained serum-free, with possible implications for understanding hair follicle growth mechanisms.

In this study, subcutaneous injection of bone marrow mesenchymal stem cells in burned rats significantly improved wound healing by reducing inflammation, scar formation, and wound size, and restoring normal skin structures.

This review explores the complexity of the hair cycle and discusses the roles of various growth factors, androgens, and cytokines in regulating hair growth, yet reports no new results.

This study found that EGFR inhibitors and ligands did not significantly affect the expression of inflammatory biomarkers in cultured sebocytes, except for a notable increase in IL-1 expression with EGF treatment.

Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.

This review highlights the potential of ginseng and its metabolites in preventing hair loss, detailing their hair growth-promoting effects observed in numerous preclinical studies, and emphasizing the underlying mechanisms involved.

This article reviews mechanisms by which herbal ingredients may stimulate or inhibit hair growth, and it reports no new clinical findings while suggesting potential for developing hair loss treatments.

This study observed that gerbils exhibit a different wound healing mechanism compared to mice, with lower TGF-B1 expression and distinct tissue responses, yet achieve similar healing outcomes.

In this study, androgens were found to stimulate keratinocyte growth in co-culture with beard dermal papilla cells but inhibit it in co-culture with balding frontal scalp DPCs, mediated by TGF-beta1.

In this study, researchers observed that RE-ORGA, a preparation from Korean herbs, may help alleviate androgenic alopecia by promoting human dermal papilla cell proliferation, reducing 5α-reductase enzyme levels, and displaying anti-inflammatory properties, suggesting potential regulation of androgen receptor sensitivity.

This study investigated single-cell changes in photoaged skin, revealing distinct cell clusters and increased activity in PD-L1 and PD-1 pathways in sun-exposed areas, enhancing understanding of UVA-induced skin damage and potential prevention targets for photoaging and UV-induced skin cancers.

This preliminary study found that Melandrium firmum extract may promote hair growth and inhibit 5α-reductase, suggesting potential as a candidate for treating androgenetic alopecia.

In this study using lab models, YangHyulEum Gami-Bang (YHEG) was associated with promoting hair growth and inhibiting factors that contribute to hair loss.

This study systematically reviewed 43 articles on the role of fibroblasts, especially dermal papilla cells, in androgenic alopecia, identifying androgen signaling and related pathways as key drivers of hair follicle miniaturization, which supports targeting dermal papilla cell dysfunction as a therapeutic strategy.

In this study, a botanical extract and minoxidil showed similar effects in vitro by reducing pro-inflammatory cytokines and 5α-reductase expression while increasing growth factors VEGF and KGF in human keratinocyte cells, suggesting potential for further in vivo research.

In a testosterone-induced mouse model of androgenetic alopecia, this study found that oral and topical administration of Connarus semidecandrus Jack ethanol extract promoted hair regrowth and improved hair health markers similar to finasteride, without detectable liver or kidney toxicity.

This narrative review highlights current insights into how perifollicular fibrosis contributes to androgenetic alopecia, by hindering hair regrowth and treatment response, and outlines potential antifibrotic therapies, though conclusive evidence from randomized controlled trials is still needed.

This study explores a novel hypothesis for Male Pattern Baldness, suggesting that chronic tension in the scalp's Galea Aponeurotica creates a hypoxic environment affecting hair follicles, and proposes a Triad Therapeutic Protocol to address this underlying cause rather than just the symptoms.

This paper identifies Galeal Tension-Induced Follicular Hypoxia as a mechanism for male pattern baldness, proposing a new therapeutic protocol targeting underlying physiological failures rather than just symptoms.

This study elucidates a mechanism for male pattern baldness involving chronic scalp tension leading to follicular hypoxia, rather than purely hormonal factors, and proposes a treatment targeting electrolyte, vascular, and neurological factors to restore balance.

This study elucidates a mechanism for male pattern baldness involving tension in scalp muscles that leads to reduced blood flow and hypoxia around hair follicles, proposing a multi-targeted therapeutic approach.