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This study suggests that vitamin D and calcium signaling are crucial for normal wound healing, with deficiencies in these pathways potentially delaying recovery due to diminished stem cell activity and response.

This study found that mice lacking the Vitamin D receptor showed disrupted hair follicle cycling, which was partially restored with hedgehog signaling pathway activation, suggesting a role for this pathway in follicle regulation independent of vitamin D.

This study created a humanized mouse model of hereditary vitamin D-resistant rickets that lacks alopecia, indicating the mutant receptor's potential to explore the syndrome's characteristics beyond vitamin D binding.

This review discusses various factors influencing alopecia areata and explores newer therapeutic options like biologics and regenerative techniques, but it reports no new clinical trial results.

This study found that sulforaphane-rich broccoli sprout extracts reduced UV-induced erythema by 37.7% in humans, suggesting a protective strategy against UVR damage.

This review examines beta-catenin's role in stem cell renewal, lineage selection, and tumor formation in the epidermis and reports no new experimental findings.

This letter to the editor discusses a potential link between new onset alopecia areata and SARS-CoV-2 infection, but reports no new clinical results.

In this study, researchers observed that Vdr-knockout mice experience hair cycle arrest during the catagen stage, leading to alopecia, with persistent epithelial strands forming in the hair follicles, indicating Vitamin D receptor's role in regulating hair follicle regression and regeneration.

This review discusses the potential risk mechanisms for COVID-19 in women with polycystic ovarian syndrome due to hyperandrogenism and calls for further research, but reports no new findings.

This study suggests that dsRNA may enhance KRT9 expression in palm and sole skin through β-catenin signaling, potentially linking mechanical damage to specific skin features and certain skin conditions.

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.

This review discusses the roles of the hairless (HR) protein as a corepressor, particularly its impact on RORα-mediated transcriptional repression, and reports no new experimental findings.

In this study, researchers observed that the sebaceous gland niche in mice allows for Wnt-induced hair follicle differentiation, unlike the non-permissive bulge.

This study found that patients with alopecia areata had significantly lower serum 25-Hydroxy vitamin D levels compared to healthy controls, and observed a significant inverse relationship between vitamin D levels and disease severity.

This study suggests that unliganded vitamin D receptors in mice may cause more severe skeletal and mineral ion defects than VDR-null conditions, and vitamin D analogues may restore function in specific VDR mutations.

This minireview discusses a proposed model of the vitamin D receptor that explains how 1alpha,25(OH)2D3 can mediate both genomic and rapid responses through different ligand shapes and cellular locations, without presenting new research findings.

This study found that the vitamin D receptor is essential for the self-renewal, migration, and differentiation of epidermal stem cells during skin wound healing in mice.

This study found that the vitamin D receptor, but not its ligand, regulates genes involved in hair cycle progression, suggesting a role in integrating hormone signaling pathways for hair and epidermal functions.

In this study, a Chinese Han family with hereditary vitamin D-resistant rickets was found to have a homozygous missense mutation in the VDR gene, and the affected individual uniquely responded well to treatment with oral calcium and low-dose calcitriol.

In this study, researchers found no significant difference in vitamin D levels between psoriasis patients and controls, suggesting no association between vitamin D deficiency and psoriasis.

This case report describes a 4-year-old girl with trichotillomania triggered by vitamin D deficiency, who showed dramatic improvement with vitamin D therapy.

This review summarizes the proposed model that describes how different shapes of 1alpha,25(OH)2D3 ligands interact with the vitamin D receptor to mediate genomic and rapid responses in cells.

This study found a significant association between lower vitamin D levels and increased severity of androgenetic alopecia in men.

In this review, researchers explored the roles of vitamins A, B3, C, D, and E in skin immunity, highlighting their potential as therapeutics for skin diseases due to their antioxidant, anti-inflammatory, and antimicrobial properties.

This case study reported on a 3-year-old child with vitamin D-dependent rickets type II treated in the Gaza Strip, whose condition deteriorated despite vitamin D and calcium treatments, leading to recurrent chest infections, respiratory failure, and eventual death.

Vitamin D is crucial for skin health and managing skin diseases.

This review discusses the molecular role of the vitamin D receptor in regulating various biological actions such as bone mineralization and reports no new clinical results, highlighting the complexity of vitamin D's function in multiple tissues.

This review examines the impact of vitamin D signaling in extraskeletal tissues and notes that expected benefits from animal and cell studies have not been consistently replicated in human clinical trials.

This study, conducted among 50 women with female-pattern hair loss, observed that 89% had deficient or insufficient vitamin D levels and also showed low ferritin levels, suggesting these deficiencies may contribute to hair loss.

This review discusses the potential role of vitamin D deficiency in cardiovascular and renal diseases and suggests that supplemental vitamin D could benefit cardiovascular outcomes, especially in African American and postmenopausal women; it reports no new clinical findings.