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This study found that the absence of Sgk3 in mice leads to impaired hair follicle maturation, characterized by reduced cell proliferation, increased apoptosis, and premature regression.

This article reviews extensive genetic polymorphisms in the keratin-associated proteins of human hair, indicating complexity but reporting no new clinical results and calls for further research on their potential impact on hair structure.

This study found that codeine incorporation in guinea pig hair varied with pigmentation and was highest in black hair, suggesting the role of eumelanins in drug binding.

In this animal study, topical minoxidil shortened the telogen phase of hair growth cycles in rats, suggesting it may stimulate certain follicles to progress more rapidly to anagen.

This review discusses the influence of androgens on hair and sebaceous growth, emphasizing that response may depend more on peripheral sensitivity than on hormone levels; it reports no new empirical results.

Fibronectin and other basement membrane components increase during hair growth and decrease during rest.

In this study, α-MSH and cyclic AMP were found to stimulate melanogenesis in hair follicle cultures, while cyclic GMP and melatonin inhibited melanin production but not tyrosinase activity.

This study found that the microRNA miR-22 is a key regulator of the hair cycle, influencing hair loss by promoting the transition from growth to rest phases and repressing keratinocyte differentiation.

This study found that KRTAP2 proteins predominantly express in the hair shaft cortex of humans, interact with hair keratins, and play crucial roles in hair shaft keratinization.

This study found that the absence of Ctip2 in epidermal keratinocytes led to impaired wound healing in mice, affecting cell migration, proliferation, and hair follicle stem cell maintenance.

This review discusses the pathogenesis and treatment of androgenetic alopecia, highlighting genome associations and newer topical formulations, but reports no new clinical results.

This study found that nanostructured lipid carriers with clobetasol propionate significantly enhance follicular drug delivery compared to commercial cream, and manual massage further doubles follicular retention.

This review highlights the potential of ginseng and its metabolites in preventing hair loss, detailing their hair growth-promoting effects observed in numerous preclinical studies, and emphasizing the underlying mechanisms involved.

This review examines the effects of adipose-derived stem cells and their secreted factors on hair growth stimulation in laboratory and animal models, suggesting their potential as therapeutic agents for hair loss treatment.

This study found that platelet-rich plasma injections significantly improved hair density, thickness, and patient satisfaction in women with female pattern hair loss compared to a placebo.

This review discusses hairstyling practices in the black community linked to traction alopecia, categorizes them by risk, and offers guidance for dermatologists on management and patient education but reports no new clinical results.

This study found that human mesenchymal stromal cells derived from hair follicle dermal sheath showed promising growth and wound-healing properties in vitro and in diabetic mice, suggesting potential for therapeutic use.

This study found that Brg1, a chromatin-remodeling enzyme, plays a critical role in hair regeneration and early epidermal repair by regulating bulge stem cells through a Brg1-Shh interaction.

This review presents updated tables of mouse mutants with hair growth abnormalities to aid in understanding the molecular mechanisms of human hair disorders, but reports no new clinical results.

This study found that human hair follicle stem cells formed more colonies and adhered more rapidly, while transit-amplifying cells showed significantly greater mobility.

This study found that 62% of neutered dogs with hair cycle arrest experienced partial to complete hair re-growth after melatonin treatment, but hair re-growth was not consistently linked to normal sex hormone levels.

This study found that overexpression of parathyroid hormone-related protein in mice resulted in 30–40% shorter hair due to premature transition into the catagen phase of the hair cycle.

This study found that thrombospondin-1 plays a critical role in hair follicle cycle regulation, with deficiency prolonging follicle growth and overexpression delaying it through antiangiogenic effects.

Human hair keratin genes hHa2 and hHb1 are located on chromosomes 17 and 12.

In this study, researchers found that the ability of hamster polyomavirus to cause lymphoid tumors in Syrian hamsters may be linked to its association with the tyrosine kinase p59fyn.

This study found that monoclonal antibodies can identify specific immunological characteristics of hair fibrous proteins, with some antibodies reacting only with hair proteins and others showing broader activity with skin and epithelial cells.

This study found that serum and hair mineral concentrations, including copper and zinc, showed no differences between Alzheimer's patients and their healthy spouses, suggesting no diagnostic utility for Alzheimer's disease.

Human hair's ability to get wet is complex and can change with treatments, damage, and environment.

This review discusses various techniques for evaluating hair shedding and alopecia but reports no new clinical results. The authors emphasize the value of specific clinical and instrumental methods in assessing hair growth.

This study highlights that the mammalian target of rapamycin complex 2 (mTORC2)-Akt signaling axis is essential for hair follicle stem cells to return to their niche and regenerate effectively by regulating metabolic pathways.