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Premature graying of hair is mainly caused by genetics, stress, and environment, with potential treatments being explored.

This source explores melatonin's roles beyond circadian rhythm regulation, reporting its benefits in skin conditions like dermatitis, melasma, alopecia, psoriasis, and skin aging due to its antioxidant, anti-inflammatory, and immunomodulatory properties, while highlighting the need for more trials on optimal dosing and long-term safety.

Some cells may slow melanoma growth, a protein could affect skin pigmentation, a gene-silencing method might treat hair defects, skin bacteria changes likely result from eczema, and a defensin protein could help treat multiple sclerosis.

This study found that the survival and proliferation of mouse melanocytes expressing the GNAQQ209L oncogene were impaired by interactions with the epidermal microenvironment, suggesting a possible mechanism for the rarity of these mutations in epidermal melanomas.

This study found cell-specific variations in POMC mRNA and peptide expression in murine skin, suggesting that PC1 and PC2 convertases contribute to differential POMC processing.

This study describes a new mouse model for vitiligo that mimics key clinical features such as skin depigmentation and CD8 + T cell infiltration, providing a useful tool for in-depth research and drug discovery.

In this study, the researchers analyzed skin samples from Dun Mongolian horses to uncover molecular pathways linked to the "Bider" marking, identifying differential gene expression and several pigment-related signaling pathways that may play key roles in its formation.

This study found that applying topical thymidine dinucleotide (pTT) to newborn mice before UV exposure delayed and reduced melanoma development compared to untreated controls.

This study found differences in melanin content and gene expression in skin under black and white hair of giant pandas, providing a basis for further research on hair color distribution and skin diseases.

In this study, researchers found that the vitamin D receptor plays a crucial role in promoting differentiation and protecting against UVB-induced DNA damage in murine melanocytes, suggesting potential implications for melanoma progression.

This source describes vitiligo as a chronic condition marked by the loss of skin pigmentation and discusses leukotrichia, a feature affecting 10% to 60% of cases, which arises from melanocyte loss in hair follicles and appears as well-defined white patches on the skin.

This study found that α-melanocyte-stimulating hormone may modulate inflammation in skin connective tissue by inhibiting proinflammatory effects in fibroblasts.

Intradermal PRP significantly improved melasma in dark skin, with lasting results and no relapse after 3 months.

This study found that quercetin increased melanin production in hair follicle tissues from C3H/HeN Jel mice, correlating with higher levels of tyrosinase protein and TRP-2 protein expression.

This review outlines how dermoscopy enhances diagnostic accuracy by up to 30% compared to unaided visual inspection and explores its potential as a research tool without presenting new research findings.

This study observed that albino rats, despite not producing melanin, have melanocytes localized in specific skin areas of their hair matrix, suggesting that gene expression analysis of their skin should consider regional differences in melanocyte presence.

In this study, a combined regimen of an oral supplement with Pinus pinaster, Grape seed extract, vitamins, and minerals, plus high SPF sunscreen, significantly improved mild-to-moderate facial melasma in 30 women over 84 days, reducing pigmentation and enhancing cosmetic appearance with no reported adverse effects.

This study identified ABCB6 as the first gene linked to dyschromatosis universalis hereditaria (DUH) in a large Chinese family, suggesting it plays a role in skin pigmentation.

This ex vivo study reported that melatonin significantly improved certain aging biomarkers in aged human skin, including reduced mTORC1 activity, increased fibrillin-1, and enhanced collagen and elastic fiber organization, though other key biomarkers remained unchanged.

This study identified molecular differences between dysplastic nevi and common melanocytic nevi, including altered keratinocyte differentiation, increased hair follicle-related molecule expression, and distinct immune microenvironment characteristics in dysplastic nevi.

In this case report, a woman with segmental vitiligo and hemifacial atrophy showed signs of stabilization after treatment with chloroquine and betamethasone pulse, suggesting a common underlying cause for these dermatoses.

This article reviews the need for multicenter clinical trials to establish reference data for ultrasound screening protocols for Down syndrome and reports no new findings.

This study discovered a conserved "fiber-like-motif" of melanosomes aligned in hair across various mammalian species, shedding light on the internal structure that influences hair's thermal and mechanical properties.

This study found that the dark pigmentation pattern in Dun Mongolian horses' "Bider marking" is closely associated with higher protein levels and specific localization of MITF and WNT3A, suggesting these are key factors in its formation.

Vitiligo is caused by the immune system attacking skin pigment cells.

Results are not reported in this abstract; it discusses recent advancements in understanding vitiligo's pathogenesis, treatment, and comorbidities, emphasizing emerging areas like gut microbiome involvement and highlighting the disease's reclassification as a systemic condition with evolving therapies.

This perspective suggests that browning agents may not directly enhance UCP1 expression in white adipose tissue but instead induce browning through increased heat loss, prompting thermogenesis to compensate.

This study found that inhibiting the Hedgehog pathway may reduce proliferation and migration in melanoma, suggesting its potential repurposing as a therapeutic target.

This study found that carvone, a plant-derived compound, decreases melanin content and inhibits melanoma cell proliferation through the cAMP pathway, suggesting potential benefits for treating melanomas and other hyperpigmentation disorders.

This review discusses the role of various cells outside the hair follicle in regulating melanocyte stem cells and hair graying, but reports no new clinical results.