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This review discusses the interplay between hormonal and immune systems in hair follicles and reports no new results, highlighting the need for further research on their role in skin biology and alopecia areata.

This study found that DNA strand segregation in multipotent hair follicle stem cells occurs randomly during development and tissue homeostasis, challenging the immortal strand hypothesis.

In this study, finasteride dose-dependently inhibited stress-induced increases in allopregnanolone in rats, while enhancing 20alpha-reduction of progesterone without affecting 3alpha-dihydroprogesterone or 11-deoxycorticosterone levels.

Stress can cause hair loss and skin issues by affecting hair growth cycles.

In this study, anabolic and catatoxic steroids were reported to prevent weight loss, tissue calcification, and cardiac necrosis in a rat model of disturbed calcium metabolism and progeria-like syndrome.

This study reported that the prevalence of atopic dermatitis in cats was higher than previously suggested, with severe nonseasonal pruritus most common, and certain breeds were predisposed.

This study found that RANK-RANKL signaling regulates hair renewal and epidermal homeostasis in mice, revealing its role in initiating hair growth cycles and maintaining skin cell activity.

This review discusses advances in skin tissue engineering, focusing on scaffold-free approaches and the application of stem cells, and reports no new research findings.

This study reports that intralesional triamcinolone acetonide was effective and well-tolerated for treating extensive alopecia areata in patients who often showed specific initial hair characteristics.

This study found that social isolation in rats enhanced ethanol's effects on brain steroidogenesis and GABA A receptor function, altering related behavior more than in non-isolated rats.

This study suggests that αMSH may play a regulatory role in human dermal papilla cells, potentially influencing immune and inflammatory responses in hair follicles, which could contribute to inflammatory alopecia.

This study used an autoradiographic technique to observe that germicides in surfactants are primarily deposited on the stratum corneum of guinea-pig and human skin.

This review discusses the multiple layers of environmental controls on hair stem cell homeostasis and suggests that targeting these layers could offer safer regenerative medicine therapies without directly using stem cells.

This study found that the CDK4/6 inhibitor palbociclib may protect human hair follicles from the damaging effects of taxane chemotherapy by inducing G1 arrest in stem/progenitor cells.

This review discusses the development and application of multiphoton microscopy in dermatology, highlighting its advantages and potential future research directions without reporting new clinical results.

This study found that dermal fibroblast cultures, especially those with higher alpha-smooth muscle actin expression, can be used to produce skin-derived precursor cells, unlike human hair follicle dermal papilla cultures.

OCT4 helps hair stem cells renew and fight aging, potentially aiding hair regrowth.

This article reviews methods to enhance epithelial–mesenchymal interactions for hair follicle bioengineering but does not present new experimental results; it emphasizes optimizing combinations for successful regeneration.

This study found that platelet-rich plasma significantly increased hair count, density, and the percentage of anagen hairs in patients with androgenetic alopecia, but these improvements did not correlate with platelet or growth factor levels.

This review highlights recent advances in understanding how the extracellular matrix regulates epidermal stem cell fate, emphasizing the importance of the hair follicle stem cell niche, but reports no new empirical findings.

This study found that permanent alopecia can occur after certain chemotherapy treatments and presents as nonscarring hair loss similar to androgenetic alopecia, with specific histological features that could be misdiagnosed without proper clinicopathological correlation.

This study found that despite the presence of steroidogenesis inhibitors, CRPC tumor cells adapt to continue synthesizing androgens, suggesting a need for more effective androgen axis targeting.

This introduction reviews historical use of steroids for alopecia treatment, mentioning early cases of hair regrowth with cortisone acetate but provides no new clinical data.

This study found that H-Ras activation in aged mouse skin leads to increased dysplasia and progression to in situ squamous cell carcinoma, highlighting an age-linked connection between immune changes, senescence, and cancer risk.

This study observed that in hormone-starved prostate cancer cells, the androgen 5alpha-dihydrotestosterone rapidly induces matriptase activation and shedding, which involves androgen receptor signaling and requires both transcription and protein synthesis.

This study found that 80% of hospitalized COVID-19 survivors experienced at least one post-COVID symptom seven months after discharge, with fatigue, hair loss, and dyspnea being the most common.

Hair can regrow after certain stem cells are lost because other stem cells can take over their role.

This review explores multidisciplinary advances in understanding alopecia areata, including epidemiology, pathogenesis, and innovative treatments, but reports no new research results.

This review outlines the factors controlling root hair growth in plants, emphasizing the coordinated roles of cellular and extracellular components, without reporting new experimental results.

This study suggests that the susceptibility of hair follicle melanocytes to oxidative stress as they age may be key in the graying of hair due to reduced catalase expression and activity.