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This study observed that hair characteristics significantly impact daily life, self-image, and well-being, varying by gender, ethnicity, and country, suggesting a need for interventions to address these psychological and social effects.

This study observed two cases of pigmented epithelioid melanocytoma suggesting potential differing origins: one from a hair follicle's outer root sheath and another from an intradermal nevus.

This study found that L-cystine-modified rabbit hair fibers had improved dye adsorption and spinnability, due to changes in secondary structure and surface characteristics.

In this mini-review, recent insights suggest a possible role of type-2-related immunity in diseases like alopecia areata, vitiligo, and localized scleroderma, though whether this immune response benefits or worsens these conditions remains unclear.

This study found that among women with hirsutism, the most common type of non-scarring alopecia observed was androgenetic alopecia with telogen effluvium.

This study suggests that L-(+)-Tartaric Acid may support hair growth by up-regulating certain genes in human Dermal Papilla cells, making it a potentially useful additive in minoxidil formulations.

This study explored the structure and function of lipocalin prostaglandin D synthase, revealing its dual role in substrate catalysis and as a lipophilic ligand carrier, potentially informing future drug delivery design.

This study established that a human epidermal model can be utilized to assess 5alpha-reductase activity and evaluate enzyme modulators, such as finasteride, for dermatological applications.

This study identifies a bipotent stem cell in adult hair follicles that self-renews and contributes to dermal sheath and papilla cell populations, potentially aiding hair regrowth after injury, disease, or aging.

This study found that squamous cell carcinomas from hair follicle stem cells are more prone to epithelial to mesenchymal transition and metastasis than those from interfollicular epidermis, due to distinct chromatin landscapes.

This study found that SRD5a-3 is a highly efficient enzyme for converting hormones into androgens, with dutasteride being a much more potent inhibitor of SRD5a-3 than SRD5a-2.

This study found that PNU 157706 is a highly potent inhibitor of human 5α-reductase enzymes, showing a stronger and longer-lasting antiprostatic effect in rats compared to finasteride.

This study found that oral administration of l-cystine with vitamin B6 effectively prevents environmental cigarette smoke-induced alopecia in mice by reducing hair bulb cell apoptosis.

This study suggests that ROXYs and reactive oxygen species are likely involved in the signaling pathways plants use to respond to nitrate deprivation.

This study found that l-carnitine stimulated hair growth in vitro by promoting proliferation and reducing apoptosis in human scalp hair follicles, suggesting potential as a treatment for hair loss.

In this mouse study, NF-κB was shown to play a role in hair follicle cycling and morphogenesis, with specific activity patterns differing by hair type and involving noncanonical signaling for zigzag hair bending.

This study reports that six women developed scleroderma while taking L-tryptophan and showed improvement after stopping the supplement and/or starting corticosteroid therapy.

This research found that a biodegradable fibrous membrane incorporating fibroblast-derived ECM accelerated wound healing and improved neovascularization in a mouse model.

This study presents the first reported case of kerion-type scalp mycosis caused by Aspergillus protuberus, emphasizing the importance of mycological examination when diagnosing unusual scalp infections, especially in children.

This study found that certain compounds from Chaga mushrooms stimulated the proliferation of human hair follicle cells more effectively than minoxidil, suggesting potential for hair-growth treatments.

In this study, various types of minor hair follicle damage were observed during follicular unit extraction, with paring and hair bulb injury being more apparent under microscopic examination.

In this study, researchers found that ginsenoside Re from Panax ginseng increased hair shaft length and duration in mice, comparable to minoxidil, by modulating TGF-β signaling pathways.

This article reviews how aging affects skin and stem cells, but it contains no new research findings.

This study demonstrated that high doses of L-cystine and vitamin B6 effectively prevent doxorubicin-induced hair loss in mice.

This case report describes a patient with eosinophilia-myalgia syndrome, likely linked to L-tryptophan use, who developed a skin rash characterized by cutaneous mucinosis.

This study found that trans-3,4'-Dimethyl-3-hydroxyflavanone reduces active TGF-beta2 levels in human keratinocytes, suggesting it may enhance hair growth by suppressing the TGF-beta2 activation pathway.

This case report presents the first known instance of combined polycystic ovary syndrome and autoimmune polyglandular syndrome type 2 in a patient, exploring potential mechanisms for their interrelation.

This study found distinct differences in UEA I glycoprotein binding on follicular keratinocytes between anagen and telogen hair follicles, with staining associated with follicle length and regrowth.

This study on feather pattern formation in chicken skin found that inhibiting gap junctional intercellular communication can lead to the emergence of new feather buds in specific spatial patterns, suggesting that GJIC may facilitate Turing-type periodic patterning by propagating inhibitory signals over long distances.

This review discusses the limitations of current hair classification systems and highlights the need for standardized reporting of key hair characteristics to improve study comparisons; it reports no new results.