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This study found that PGF 2α receptors were predominantly present in the inner root sheath of the bulb and stem of human eyelashes during the anagen phase.

This study found distinct localization patterns of S100 family proteins in hair follicles, suggesting their differential roles in normal hair follicle physiology.

In this study, researchers found that the matriptase-HGF-c-MET pathway may be activated in proliferative cells of human hair follicles and sebaceous glands, suggesting a potential role in hair growth regulation.

This study found that COX-2 expression in normal rat skin is linked to the hair cycle, with varying levels observed in different skin structures during anagen, catagen, and telogen phases.

This study observed that amino acid uptake into wool follicles varies significantly, with cysteine showing the highest uptake rate, suggesting specialized transport systems that may influence wool growth.

This study found that infused mouse epidermal growth factor induced wool follicle involution through a quasi-physiological process similar to catagen and a separate pathological action, resulting in fleece 'break' or shedding.

Using a transgenic pig model, this study demonstrated that LGR5 is a marker of hair follicle stem cells across different species, with important similarities and differences in gene expression and developmental processes.

This review discusses how neuroendocrine regulation affects human hair follicles and suggests potential therapeutic targets, but it reports no new clinical results.

This study found that CD99 is strongly expressed in the basal cells and hair follicles of normal adult and developing fetal skin, with expression patterns becoming similar after 20 weeks of gestation.

This study reports that a homozygous A1103G mutation in DSG 4 is responsible for localized autosomal recessive hypotrichosis in a 2-year-old Chinese girl, resulting in reduced DSG 4 expression and hair defects.

This study found that TGF-β1 expression in follicular tumors correlates with differentiation degree and suggests its potential role alongside p63 in differentiating between sebaceous and follicular tumors.

In this animal study, pigs on a biotin-deficient diet showed significant hair loss, weak and brittle claws, and skin lesions after 8–10 weeks, with tissue necrosis observed microscopically after 15 weeks.

This study found that injecting keratin into the skin of mice promoted hair growth, potentially through keratin's interaction with hair-forming cells and changes in the microenvironment.

This study observed that the OCIAD2 and DCN genes in Liaoning cashmere goats have opposite effects on hair growth by interacting with the TGF-β signaling pathway, influencing follicle morphogenesis and periodic changes.

This study in Hexi cashmere goats found that secondary follicle activity increases with time, and Hoxc13 expression varies significantly across different growth stages, suggesting a role in follicle activity.

This study found that apoptosis, along with proliferation, plays a crucial role in shaping and extending human hair follicles by coordinating the formation and differentiation of the hair canal.

In this study, researchers found that inducing mitophagy can alleviate NLRP3 inflammasome activation in outer root sheath cells under conditions of mitochondrial stress, suggesting that targeting mitophagy and inflammasome interactions may offer new therapeutic approaches for alopecia areata.

This study found that human mesenchymal stem cell-derived extracellular vesicles promote the proliferation and migration of hair follicle cells and increase hair shaft elongation in cultured human hair follicles.

This study suggests that Sox13, although dispensable for epidermal development, serves as a marker for early hair follicle development in Sox13-LacZ knock-in mice.

In this study, researchers reported two cases of the rare and benign follicular tumor called panfolliculoma, highlighting its differentiation across all hair follicle components, which is distinct from similar conditions like trichofolliculoma.

This study suggests that TGF-alpha may function in an autocrine or juxtacrine manner rather than promoting cell proliferation during hair growth cycles in ferrets and sheep.

This study suggests that the attachment and interaction between dermal papillae and the hair bulb matrix are crucial for normal hair follicle growth and development in vitro.

This study reported that minoxidil affects the physiology of cultured endothelial cells, including reversible suspension of cell proliferation and dose-dependent influence on cell morphology, without significantly altering protein synthesis or inhibiting cell migration.

In this study, two cases of idiopathic hair casts in young girls responded well to 0.025% tretinoin lotion, with analyses suggesting an infrainfundibular origin for the lesions.

This study investigated the immunohistochemical characteristics of keratin proteins in epidermal appendages, finding variable staining patterns in different skin structures and tumor cells, which suggests differences in keratinization.

This study identified the presence of recognizable organelles, such as lysosomes and mitochondria, in both the keratinized fiber and the hardened inner root sheath of the Romney wool follicle.

This study found that elevated beta-hydroxybutyrate levels may worsen the inflammatory immune response in alopecia areata patients and could indicate a poor prognosis with chronic hair loss.

This article reviews in-vitro and cell-free methods for assessing the efficacy of herbal ingredients in cosmetic formulations for skin health and hair growth, but it reports no new clinical results.

This study found that a mutant form of the FGF5s protein, FGF5sC93S, significantly increased hair count after 24 weeks of application on human scalps, suggesting its potential as a hair growth treatment.

This study found that the trichogenicity of cultured human outer root sheath follicular keratinocytes decreased with longer cultivation periods and was significantly influenced by the expression of the transcription factor FOXA2.