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This article discusses the role of androgens in metabolic and reproductive health and reports no new experimental results; the focus is on androgen receptor activation by testosterone and 5α-dihydrotestosterone.

This study identified potential ceRNA regulatory networks in cashmere goat hair follicle cycling, expanding understanding of lncRNA and miRNA biology and annotation of the goat genome.

In this review, researchers discussed recent advances in nanotechnology for topical skin applications, highlighting how nanocarriers enhance skin penetration and targeting in treatments for diseases like melanoma and psoriasis, while acknowledging that the penetration mechanisms and health impacts of nanoparticles remain not fully understood.

This study found that Ng2+ perivascular cells in mouse skin are a diverse lineage-restricted population primarily recruited from papillary or reticular fibroblast lineages during wound healing, maintaining heterogeneity in both wounded and non-wounded skin.

This review establishes a tolerable upper intake level of 255 μg/day for selenium in adults, warning that supplements and Brazil nuts may cause excess intake.

This review provides an overview of caffeine's effects on cancer, cardiovascular, immunological, inflammatory, and neurological diseases, highlighting both its potential benefits, such as neuroprotection and anti-aging, and possible adverse effects like elevated blood pressure, anemia, and migraine.

In this study, researchers developed a self-assembling hydrogel called RADA-PDGF2 and found it to accelerate wound closure in a mouse model due to its pro-proliferative and pro-migratory properties, without causing cytotoxicity or immunogenicity.

This study reports that drug repurposing for COVID-19 has had mixed results, with success for some drugs but a lack of clinical efficacy for others, highlighting the need for improved preclinical profiling and a standardized drug development platform for future antiviral treatments.

This study found that deleting ceramide synthase 4 in skin epidermis stem cells disrupts hair follicle and skin barrier function, leading to immune responses similar to atopic dermatitis, due to imbalances in lipid composition affecting differentiation.

This review explores enzyme inhibitors from gorgonians and soft corals and highlights their potential industrial and biomedical applications, but it reports no new experimental results.

This study observed that high concentrations of rosemary and thyme extract caused thymic tissue damage, decreased IgM and IgG levels, and fluctuated IL-10 levels in chick embryos, with inflammation signs present despite potential benefits.

This review evaluated the potential of adipose-derived stem cells (ADSCs) for burn treatment, finding promising regenerative healing effects, though most findings are at early experimental stages primarily in animal models.

This study found that both oral afoxolaner (NexGard®) and topical Frontline Combo® achieved 100% efficacy in eradicating Heterodoxus spiniger infestations within 30 days in dogs, with significant reductions in associated symptoms like hair loss and pruritus.

This review explored the causes of hair graying and evaluated how plant-derived extracts and phytochemicals might alleviate it, noting that certain compounds showed potential in enhancing melanocyte function, reducing oxidative stress, and influencing stress-related pathways based on experimental evidence.

This review examines quality control in preparing platelet-rich plasma, highlighting knowledge gaps in its clinical efficacy and safety, but reports no new clinical results.

This study identified a gene variant in the TRPV3 gene that may explain the suri alpaca phenotype, characterized by longer and less crimped fleece, suggesting this variant's involvement in the development of these hair characteristics compared to the huacaya phenotype.

This research identified a genetic mutation in Brachypodium distachyon that initially allows root hair initiation but fails to elongate them, while also affecting root growth and nitrate sensitivity; the mutation is linked to a previously uncharacterized cyclin-dependent kinase-like gene.

This study established a novel in vivo "whisker follicle microinjection assay" using mouse whiskers to evaluate hair growth and pigmentation effects of various chemicals and proteins, identifying minoxidil, ruxolitinib, and RSPO1 as growth promoters, while deoxyarbutin inhibited pigmentation and Nbl1 emerged as a growth inhibitor.

This review discusses recent advancements in omics and gene editing technologies for studying neuropeptides and receptors in fish, but reports no new experimental findings; the authors highlight the need for further research in this area.

This study found that both extensive grey hair and alopecia were independently associated with increased COVID-19 severity among survey respondents in Brazil.

This study found that individual differences between pigmented and unpigmented hair fibers in Old Order Mennonites suggest grey hair may be perceived as drier and less manageable due to small mechanical and moisture changes.

This study found that Swiss cattle exhibiting rat-tail syndrome are heterozygous for genetic variants linked to pigmentation and color dilution, likely due to Holstein introgression in the Simmental breed.

In this study, researchers identified significant differences in lipid composition between grey and black hair follicles in women with type 2 diabetes and healthy controls, suggesting these lipids may contribute to the production of grey hair and may offer targets for anti-grey-hair treatments.

A 73-year-old man's grey-white hair turned dark brown after eczema treatment.

In this study, silver foxes given a yeast "filtrate factor" supplement retained their fur and normal pelts, while those without it experienced fur loss and thymus abnormalities.

This study found that young men using finasteride for androgenic alopecia exhibited erectile tissue fibrosis and associated sexual dysfunction, including low libido and mood changes.

This study found that young men using finasteride for androgenic alopecia experienced erectile dysfunction and signs of erectile tissue fibrosis, alongside symptoms like low libido and mood changes.

Imatinib can repigment grey hair, while SU11428 can cause temporary hair depigmentation.

This study observed that oral calcium pantothenate may reverse hair greying in some adolescent cases, as seen in two girls whose grey hairs turned black after treatment.

In this case report, a 54-year-old male experienced hair loss and discoloration after starting mirtazapine, with full hair regrowth and color restoration occurring within 10 weeks of stopping the medication.