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In this study, only Vdr-knockout rats showed both abnormal skin formation and alopecia, which may provide insights into vitamin D receptor function and its role in the hair growth cycle.

This study found that alopecia in VDR-null mice persists despite undetectable vitamin D levels, indicating a defect in epithelial-mesenchymal communication due to the absence of ligand-independent receptor function.

This review discusses methods to better identify unsafe donor areas in patients with diffuse unpatterned alopecia, emphasizing non-surgical management when specific diagnostic criteria are met, but reports no new clinical results.

In this study, the authors concluded that the TS-associated polyomavirus may disrupt Wnt/β-catenin signaling, likely contributing to abnormal hair follicle formation in trichodysplasia spinulosa.

This study found that lncRNA-000133 may play a role in secondary hair follicle reconstruction and cashmere fiber growth in goats, potentially through its interaction with the methylation of its regulatory region and dermal papilla cells.

This study investigated the effects of HDDPiW-jSB solution on chemotherapy-induced alopecia in a rat model and found that the solution improved hair follicle health markers and reduced cell apoptosis, especially when applied twice weekly, while appearing safe for skin application.

This report suggests that peripilar hair casts, potentially linked to modern hair styling or mild trichotillomania, may be more prevalent than currently reported.

This case series describes eight instances of autosomal recessive woolly hair in an Indian population over the past 12 years, detailing their clinical presentation, hair traits, and treatment response.

This study found that selective downregulation of CD200 in the bulge area might contribute to unusual bulge involvement in a subset of alopecia areata cases.

In this study, ectopic Wnt10b-mediated β-catenin activation in hair follicles resulted in larger regenerating anagen hair structures, an effect modulated by the Wnt inhibitor DKK1.

This study found that Hoxc13-/- rabbits exhibit complete hair loss on the head and dorsum, providing a potential model for understanding human ECTD-9 and related dermatological conditions.

This letter to the editor discusses the immune response related to hair loss in a case of atypical drug-induced hypersensitivity syndrome but reports no new research findings.

This case study highlights how trichoscopy helped differentiate between diffuse alopecia areata and trichotillomania in an 11-year-old girl, demonstrating its importance in distinguishing hair disorders with similar presentations.

This study suggests that the patchy thickening and reddish discoloration in rabbit skin during the hair cycle may be due to large anagen-phase hair follicles compressing the dermis and increased blood vessels causing redness.

Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.

The study found that pili bifurcati causes hair to intermittently split into two branches, each with its own outer layer.

This study found that twice-daily intradermal injections of mouse epidermal growth factor in Merino sheep resulted in dose-dependent changes in wool follicles and fibres, including induction of catagen and subsequent regeneration.

This article highlights that trichorrhexis nodosa, a common type of hair breakage, is influenced by factors like heat styling and chemical treatments, with potential FDA action on formaldehyde usage in hair products potentially altering its treatment approach.

The authors suggest that tooth, dermal scale, epidermal scale, feather, and hair evolved in parallel from a shared placode/dermal cell unit in an early vertebrate gnathostome with odontodes, around 420 million years ago.

This article describes the anatomy and life cycle of hair follicles, explaining how disruptions in the hair growth cycle can lead to various forms of alopecia.

This study found that Polygonum multiflorum and Panax japonicum extracts could promote hair regrowth in mice, suggesting potential use as hair tonics.

γδT cells can protect hair follicles from alopecia areata and promote hair regrowth.

This article reports electron microscope studies on the structure of hair and wool, but it does not present new clinical findings.

This study found that mature dermal adipocytes have high plasticity, undergoing dedifferentiation and redifferentiation, which plays a significant role in hair cycling and wound healing.

This article discusses alopecia areata, an inflammatory hair loss condition with largely unexplored causes, but provides no new research findings.

This paper discusses the use of dermatoscopy as a fast, noninvasive technique for diagnosing hair shaft disorders and reports no new results; the authors highlight its advantages over traditional microscopy methods.

This study assessed hair whorl characteristics in domestic dogs and found that simple whorls predominate, with tufted whorls more common in specific regions like elbows and chests, influenced by factors such as coat traits and source.

This study found that Aire‒/‒ mice spontaneously developed persistent AA-like lesions, highlighting a potential role for AIRE in hair follicle biology and pathogenesis of alopecia areata.

This study found that topical diphenylcyclopropenone was effective in treating severe alopecia areata but had a high relapse rate and was often accompanied by side effects like eczema and lymphadenopathy.