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In this study, different types of catagen in the C57BL/6 mouse model exhibited varying effects on hair follicle melanocytes and melanin distribution, with spontaneous and dexamethasone-induced catagen showing pigment incontinence, while cyclophosphamide-induced catagen retained dendritic melanocytes but increased ectopic melanin.

This study identified numerous genes that change expression across the anagen, catagen, and telogen stages of cashmere goat hair follicle development, highlighting key signaling pathways involved.

This study found that gene expression patterns can effectively distinguish the cashmere growth cycle stages and highlight molecular pathways, suggesting melatonin's role in regulating cashmere growth in Inner Mongolian goats.

This study identified distinct gene expression patterns in wool follicle bulbs that may play important roles in wool follicle cycling and regeneration in sheep.

This review highlights the importance of apoptosis in the hair cycle, particularly its role in hair follicle regression and loss, suggesting that understanding its mechanisms can aid in developing treatments to reduce hair loss and promote hair growth.

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 found that ocu-miR-205 influences hair follicle density and signaling pathways in Rex rabbits by promoting dermal papilla cell apoptosis and altering hair follicle phases.

This study identifies cartilage oligomeric matrix protein (COMP) as a key extracellular matrix component in human hair follicle cycling, potentially regulated by TGFβ signaling, and suggests its importance in normal hair follicle biology.

This study identified FP-1 as a highly specific extracellular matrix protein in follicular papilla cells, which may play a role in hair growth regulation during specific hair cycle phases.

This study found that ocu-miR-205 promotes changes in signaling pathways and shifts in hair follicle phases, affecting Rex rabbit hair density by increasing secondary follicles.

This study found that EGCG may promote hair growth by inducing and prolonging the anagen phase and delaying the catagen phase in an alopecia model of C57BL6 mice.

This study observed that downregulation of laminin-511 plays an important role in hair regression during the catagen stage in mice.

Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.

This study analyzed gene expression changes during the autumn coat color change in mountain hares and found conserved gene regulation with snowshoe hares, highlighting its role in seasonal camouflage adaptation.

This chapter reviews the anatomy and physiology of hair follicles but reports no new research findings or clinical results.

This study found that numerous genes involved in hair growth, including 73 co-up-regulated ones, were differentially expressed in goat hair follicles during the hair growth cycle.

This review assessed experimental studies on herbs used for alopecia, identifying potential mechanisms involving hair cycle management and keratinocyte processes, but highlighted a need for improved evidence on quality control and toxicity of these herbal treatments.

This research introduces WomenCare, a web-based system using a machine learning model to predict PCOD risk by evaluating factors like age, BMI, and lifestyle habits; it aims to help women monitor their health but is not a substitute for a professional diagnosis.

In this paper, the authors detailed the role of 5-α-reductase in male androgenetic alopecia and discussed potential inhibitors like saw palmetto extracts, suggesting further investigation into their effects on hair follicles and associated biological processes.

This study observed that hair follicle cycling in mouse skin involves physiological vascular remodeling, with VEGF playing a key role, suggesting potential therapeutic approaches for hair growth disorders.

This article explores the details of hair growth but reports no new research findings.

This study found that miR-22 regulates hair loss in mice by causing premature regression of hair follicles and suggests the importance of the microRNA regulatory network in understanding hair cycling and loss.

This study demonstrated that bioengineered hair follicles reconstituted from embryonic skin cells and transplanted into hosts can restore physiological hair functions, suggesting potential applications for treating alopecia.

In this study, a synthetic antagonist of the p75 neurotrophin receptor was found to significantly inhibit hair follicle regression in murine skin cultures, suggesting a potential role in treating hair disorders characterized by premature catagen entry.

This study suggests that the down-regulation of 14-3-3 proteins in wild-type keratinocytes, absent in Smad4 mutant keratinocytes, might contribute to the failure of hair follicles to initiate catagen in Smad4 knockout mice.

In this animal study, the researchers found that Schisandra nigra extract may promote hair growth by extending the anagen phase and reducing TGF-beta2 expression.

This article discusses the challenges in evaluating drug effects on hair growth and emphasizes DNA-flowcytometry as a reliable method for this purpose, without reporting new clinical results.

Hairless protein helps control hair growth by regulating vitamin D receptor activity.

This study found that the loss of a functional hr gene in mice leads to premature and abnormal hair follicle regression, disrupting normal hair cycling and architecture.

Stress can cause hair loss and skin issues by affecting hair growth cycles.