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This guide provides an overview of the complex roles and mechanisms of various receptors and channels in pharmacology but does not report new experimental results.

This chapter describes the functions and purposes of hair care cosmetics, including shampoos, hair growth promoters, and grooming products, without reporting new experimental findings.

This article reviews common pitfalls in biopsy site selection and technique that can lead to misdiagnosis of various skin conditions, highlighting the importance of proper biopsy practices for improving diagnostic accuracy.

This review highlights the challenges in identifying histological features of adverse reactions to soft tissue fillers and emphasizes the need for increased awareness due to product uncertainty and delayed reactions.

This review examines the role of steroidal inhibitors in treating prostatic diseases but presents no new clinical results.

This study found that several new pregnane derivatives, especially steroids 16 and 19, demonstrated higher antiandrogenic activity on male hamster models than the commonly used finasteride.

The authors concluded that administering biotin may help prevent alopecia caused by reduced biotinidase activity during valproic acid therapy in rats.

This review describes two cases of young women with primary amenorrhea and hyperandrogenemia, suggesting that adrenal tumors should be considered in patients with significantly elevated circulating testosterone levels.

This review discusses available treatments for androgenetic alopecia in men, like finasteride and 5% minoxidil, and notes that hair growth results are unpredictable and often driven by industry-sponsored studies.

This study found that 23.8% of participants with pattern hair loss had occipital involvement, with higher rates in females (35.6%) compared to males with early-stage hair loss (12.1%), illustrating significant gender differences in hair loss progression.

This review summarizes the use of fecal glucocorticoid metabolite analysis to monitor stress across various bear species and reports no new clinical results.

This study reported that treatment with cyproterone acetate alone and then with incremental estrogen doses induced mild feminizing effects in late-pubertal trans-girls, with further feminization observed after adding estrogen.

This review discusses the role of DHEA in intracrinology, highlighting its impact on breast and prostate cancer treatment and potential as a menopause therapy, but reports no new research findings.

This study demonstrates that human skin is capable of steroid hormone synthesis, but its role in androgenic skin disorders like acne and alopecia is yet to be clarified.

This review discusses the protective and stress-buffering roles of melatonin in skin functions and structures but does not present new clinical findings.

This study found that sulforaphane-rich broccoli sprout extracts reduced UV-induced erythema by 37.7% in humans, suggesting a protective strategy against UVR damage.

This review examines how epigenetic dysregulation affects adult stem cell function, noting that impacts range from minor to serious disruptions in tissue homeostasis and potential cancer development.

The enzyme PA-PLA1α is important for proper hair follicle development.

This study found that the enzyme A20 helps regulate EDAR-induced NF-κB signaling in mice, preventing ectodermal abnormalities like disheveled hair and assuring proper skin and appendage development.

This study found that women with PCOS who have an exaggerated 17-hydroxyprogesterone response to buserelin exhibit more severe hyperandrogenemia, increased insulin secretion, and reduced insulin sensitivity.

This study found that isotretinoin is a safe and well-tolerated acne treatment, with common adverse effects like cheilitis manageable through symptomatic medication and no significant changes in lipid or liver enzyme levels.

This study found that conditioned media from epidermal progenitor cells improved skin aging signs in a clinical trial and protected fibroblasts from oxidative stress in vitro.

This review discusses the potential of fibrinolytic enzymes from various sources, especially fermented foods, for their therapeutic use in cardiovascular diseases and emphasizes the need for further research on those from non-Asian regions to optimize discovery and application.

This study found that long-term finasteride therapy in men with BPH worsened erectile dysfunction and reduced testosterone levels, while these effects were not observed with tamsulosin.

This study demonstrated that elevated glucocorticoid levels in transgenic mice led to pancreatic exocrine cells transforming into hepatocyte-like cells, resulting in pancreatic dysfunction.

This study found that high doses of ethyl acetate extract from Tridax procumbens can have specific toxic effects in rats, including organ damage and significant changes in some serum biochemical parameters.

PRSS35 enzyme may help start skin tumors and could be a target for cancer treatment.

This study found that non-pigmented hair follicles have significantly lower expression of nucleotide excision repair genes, which may be associated with reduced melanin production capacity in these follicles.

In this study, treatment with finasteride altered the expression patterns of antioxidant enzymes in the epididymis of rats, potentially affecting its protective function for spermatozoa.

In this study, Epimedii Folium extract was found to enhance melanin production and promote pigmentation through mechanisms involving the MAPK/ERK1/2 pathway in both in vitro and in vivo models.