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Cold waving solutions quickly reduce cystine to cysteine in hair.

This study found that perming and bleaching hair result in different distributions of cysteic acid, suggesting distinct damage mechanisms between the two treatments.

This study found that L-cystine, D-pantothenat, and miliacin can enhance the metabolic capacity and proliferation of human keratinocytes, with a combination of these additives potentially providing synergistic benefits in growth media.

This study found that cysteic acid generation during hair bleaching is diffusion-controlled, increasing with the square root of bleaching time, in both cuticles and cortex of human hair fibers.

Mink use L-methionine and L-cystine slightly better than natural amino acids for hair growth, but D-methionine is not effective.

This case report documents a 3-year-old guinea pig with hormonally active ovarian cysts, cystic endometrial hyperplasia, and bacterial endometritis associated with a uterine foreign body.

This study reports a case of cystic panfolliculoma, highlighting the role of epithelial-mesenchymal interactions in its pathogenesis and explaining its histological resemblance to trichofolliculoma.

This study identified a new heterozygous missense variant in CST6 associated with autosomal dominant keratosis follicularis spinulosa decalvans in an Austrian family, affecting epidermal differentiation and hair formation.

This study found that testosterone significantly influenced the expression and function of certain ion transporters in the vas deferens, impacting fluid secretion and contributing to a suitable environment for male fertility.

This study found higher mean zinc levels in the hair of cystic fibrosis patients with growth retardation compared to those with normal growth.

This study identified a high-risk allele in the PLCD1 gene associated with hereditary trichilemmal cyst formation, proposing a monoallelic two-hit mechanism as the underlying genetic pathogenesis.

This study found that the extent of reducing agents' effects on hair fibers was linked to the electrode potential of the reagents used.

This review identifies cysteine's central role in hair growth and its potential impact on Alopecia Areata's pathogenesis, suggesting examination of cysteine metabolism might clarify the disease's underlying mechanisms and lead to new treatments.

This case report details a rare instance of eruptive vellus hair cysts in a 12-year-old male, highlighting its atypical morphology and axillary distribution, which has not been previously documented.

This study found that cutaneous cysts most frequently appeared as epidermal cysts, with unusual locations posing diagnostic challenges that required histopathological analysis for definitive diagnosis.

This case report describes a 15-year-old girl with severe hyperandrogenaemia linked to both an ovarian androgen-secreting tumor and HAIR-AN syndrome, highlighting the complexity of diagnosing polycystic ovarian syndrome.

In this study, cystaselenonine treatment in mice resulted in hair loss limited to older growing hairs and delayed regrowth, while also causing temporary weight loss.

This review discusses various environmental and chemical factors that contribute to hair shaft disorders, such as fractures, and highlights the potential roles of cysteine and glutamine in hair health, but reports no new results.

In this case report, a rare pilar cyst was found in the left temporal region of a 75-year-old male, highlighting the potential for such cysts to mimic temporal space infections and complicate treatment plans.

In this study, ultrasound showed promise in differentiating trichilemmal cysts from epidermoid cysts, suggesting potential value for clinical management.

This study suggests that arginine and cysteine deficiency is not present in women with chronic telogen effluvium, indicating that amino acid supplementation may be unnecessary in nutrient-replete populations.

This case study describes a 3.5-month-old girl with cystic fibrosis who experienced hair and skin depigmentation, which resolved after treatment with pancreatic enzymes and vitamins.

This study found that a cuticle keratin gene in sheep is a pseudogene due to gene duplication and mutations, lacking expression in vivo.

In this study, researchers found that supplementation with L-cystine, either alone or with a keratin hydrolysate, significantly improved hair density, hair and nail brightness, and nail growth in women experiencing acute telogen effluvium and brittle nail syndrome over three months.

In this randomized trial, oral supplementation with Serenoa repens, pumpkin seed extracts, and cysteine significantly improved the clinical effectiveness of topical 5% minoxidil lotion for treating androgenic alopecia in men and women compared to minoxidil alone, with both treatments being well tolerated.

This study identified a mutation in the CST6 gene linked to a rare syndrome with symptoms affecting hair and skin, revealing cystatin M/E's role in maintaining epidermal homeostasis and hair follicle development.

In this study, incorporating a novel amino acid compound into a hair-straightening formulation improved humidity-resistant straightening and enhanced the surface and mechanical properties of hair fibers, including increased bending stiffness, reduced friction, and better shape retention under high temperature and humidity conditions.

This study found that a supplement containing cystine, B vitamins, and minerals improved hair condition in 34 women with diffuse hair loss over six months, as evidenced by an increased anagen/telogen hair ratio, positive participant feedback, and no serious side effects.

In this case report, the authors describe a rare cystic panfolliculoma in an 84-year-old man's right conchal bowl, noting its potential to mimic other tumors like basal cell carcinoma, which complicates diagnosis.

In this study, the novel thiol-Michael click perming molecule, MA2-CySS, achieved repeatable perming with reduced oxidative damage, preserving hair keratin's structure while maintaining efficiency comparable to traditional oxidative methods.