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This paper reviews plica polonica, a rare hair disorder linked historically to poor hygiene and now to severe self-neglect or medical conditions, and outlines various treatment and preventive strategies but reports no new findings.

In this study of 30 severe anorexia nervosa patients, true acquired pili torti was not found although twisted hair was observed in 6.6% of cases.

This study identified a unique concentric double-layered structure in both Japanese and Caucasian SHINAYAKA hair, associated with improved flexibility and elasticity, and developed a succinic acid treatment to enhance these properties.

In this study, researchers explored how hair follicle orientation is affected in the rosette fancy mouse and found that a mutation in the PCP gene Fzd6 caused reversed hair orientations in the posterior region, leading to the formation of unique whorls.

This study found that digital perm treatments using sodium thioglycolate lotion led to the most significant reduction in protein content and greater hair damage compared to other methods and lotions.

This study analyzed inner root sheath-specific genes in Tan sheep during various growth stages, finding peak expression at birth. The pattern of genes KRT71, KRT72, and TCHH is consistent with wool crimp, potentially influencing wool morphology.

This study presents computational modeling and experimental analysis of the HGT protein KAP8.1, identifying key structural features that may influence hair's response to environmental conditions.

This study found that STRIP1 and the STRIPAK complex play a key role in regulating F-actin and cell-cell junctions, which are essential for maintaining the epidermal barrier in mouse skin.

Keratin 79 cells help form and regenerate hair canals.

This study observed that in chicken skin, large-scale differences in gene expression between feathered and scaly skin are controlled by enhancer-driven uniform expression, while small-scale differences within individual feathers are associated with chromatin looping.

This study identified that dominant mutations in the KLHL24 gene cause epidermolysis bullosa through dysregulated autoubiquitination, leading to excessive degradation of keratin 14.

This study found that hair luster decreases with age in Japanese females, primarily due to an irregular increase in fiber curvature which affects hair alignment.

This study found that occlusive dressings on mouse wounds eliminated wound-induced hair neogenesis by upregulating mechanotransduction, which promotes fibrosis, and suppressing Wnt signaling involved in regeneration.

This study found that the moisture content of human hair significantly influences the type of fracture under tensile loading, with low or high humidity levels leading to smooth fractures and intermediate humidity resulting in step fractures.

A mutation in the KRT25 gene causes a rare hair disorder with thin, woolly hair.

This case report details an instance of acute kidney injury associated with increased oxalate levels likely due to systemic absorption of glycolic acid from hair straightening agents, exacerbated by untreated psoriasis.

Junctional proteins stabilize the inner root sheath and connect the companion layer in human hair.

This study observed that in live rodents, actin filaments adjust their structure to facilitate membrane transfer between cellular compartments; linear filaments stabilize fused membranes, while branched filaments, connected by the protein Ezrin, drive integration, demonstrating actin's role in adapting to membrane biophysical changes.

New mutations in hair keratin genes can change hair structure and cause monilethrix, with nail issues more common in certain gene mutations.

This study found that Hoxc13 mutations in mice cause defects in hair, nail, and tongue structures, with the most noticeable issue being brittle hair leading to alopecia.

This study suggests that corkscrew hairs in tinea capitis result from internal hair damage by Trichophyton violaceum and external resistance from scalp scales.

This study concluded that the receptor-like kinase ERULUS, regulated by auxin, is crucial for modulating cell wall composition and pectin dynamics during root hair growth in Arabidopsis.

This article reviews the development of trichophytic closure techniques in hair restoration surgery aimed at reducing donor site scarring, but it does not report new clinical outcomes.

This study found that MK6a-deficient mice showed delayed reepithelialization after superficial wounding but not after full-thickness skin wounds, suggesting MK6a plays a role in activating follicular keratinocytes post-wounding.

This study found that ILK deficiency disrupts hair follicle development by impairing cell polarity and laminin-511 assembly, but these defects can be partially reversed with exogenous laminin-511.

This study observed that the thinning and structural abnormalities in monilethrix-affected hair occur at the internodes due to possible periodic dysfunction of the hair matrix, particularly in the cortex.

A specific gene mutation causes severe skin and nail issues and hair loss.

This case study reports that bisphosphonate therapy, used to treat osteoporosis, can lead to jawbone necrosis, as demonstrated in an 82-year-old patient who experienced severe complications requiring surgical intervention. The authors recommend comprehensive dental care before and avoidance of invasive procedures during bisphosphonate treatment.

This study found that two unrelated domestic shorthair cats had novel DSG4 gene mutations causing defective hair shafts, representing the first report of pathogenic DSG4 variants in domestic animals.