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In this study, 1,25-dihydroxyvitamin D3 inhibited growth and promoted differentiation in normal hair follicle cells but did not affect cells from a patient with vitamin D-dependent rickets type II, assisting in potential rapid diagnosis of the condition.

This case report describes a unique instance where elevated prolactin levels from a pituitary adenoma were associated with hirsutism due to increased dihydrotestosterone, with treatment leading to normalization.

This study found that inhibiting 11β-HSD1 can partially reverse the negative impact of glucocorticoids on dermal papilla cells in human scalps, suggesting potential for treating stress-related hair loss.

In this study, hair shafts from trichothiodystrophy patients with ERCC2 mutations revealed abnormal cuticle structures and protein imbalances compared to normal hair shafts.

A peptide in shampoo can promote hair growth and improve hair condition.

The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

In this study, treating hair with thioglycolic acid was found to alter disulfide bond patterns in keratin-associated proteins, shifting them from an ellipsoidal to a near-spherical shape.

This study reported that in laboratory conditions, a cell-free supernatant of Bifidobacterium longum BB536 promoted human dermal papilla cell proliferation and reduced damage and apoptosis caused by dihydrotestosterone, suggesting potential use as a preventative treatment for androgenic alopecia by modulating specific signaling pathways.

This study suggests that the newly characterized sebocytic progenitor cells HSGC1 and HSGC2 from different skin sites may have proliferative and differentiating potential in response to DHT.

This article reviews the role of vitamin D and its metabolites in regulating calcium homeostasis and highlights their effects on the intestine, kidney, bone, and parathyroid gland, without reporting new clinical results.

This study found that finasteride was nongenotoxic in Drosophila, while doxazosin mesylate and saw palmetto induced homologous recombination, indicating potential genotoxic actions under the test conditions.

This study found that mild skin injuries in rats, especially those dosed with dihydrotachysterol, lead to mineral deposits in hair follicle tissue within 6-12 hours, as confirmed by chemical and X-ray diffraction analyses.

Diphencyprone initially increases mouse hair growth, then slows it, possibly due to changes in specific protein levels.

This study suggests that epitestosterone may play a role in regulating androgen-dependent processes like prostate growth and body hair distribution by counteracting testosterone's actions.

This study found that topical administration of the TGFβ mimetic peptide DPS-1 stimulated hair growth in mice by promoting HDP cell proliferation and enhancing hair follicle morphology.

This study suggests that topical T3 can induce hair follicles to enter the growth phase and may reverse graying in mice, with in vitro results supporting enhanced hair shaft growth.

This study found that IGF1, retinoic acid, and dexamethasone increase IGFBP-3 production in cultured human dermal papilla cells, potentially inhibiting IGF1 action on hair growth.

This study found that applying 2.5% testosterone gel increased facial terminal hairs in young males with beta-thalassemia major and was well tolerated.

This study identified a new cis-regulatory element in the mouse Hr gene that influences its expression in skin and brain cells, highlighting a complex molecular network involved in hair follicle formation.

This study found that a single dose of TRP significantly reduced the number of UV-B-induced actinic keratosis lesions in a mouse model and was associated with improved skin histology and minimal side effects.

This paper details a method for measuring testosterone metabolism into seven androgens using digital autoradiography, which offers high sensitivity and reduces the need for radioactive materials.

This study on mice found that activating TRPML channels with MLSA1 promoted hair regeneration, accelerated hair cycle transition, and influenced human dermal papilla cells to secrete hair growth promoting factors while reducing hair growth inhibitors and oxidative damage.

Androgens reduce hair growth by affecting cell differentiation and blood vessel formation.

This study highlights how sex steroids affect hair growth, reporting that testosterone used in masculinizing hormone therapy can lead to androgenetic alopecia in transgender individuals, while feminizing hormone therapy with estradiol and antiandrogens can reduce hirsutism.

This article outlines the potential for upregulating the vitamin D receptor in treating hair disorders, emphasizing the need for further studies to evaluate vitamin D's role in the hair cycle.

This study evaluated a hair growth gel with Hibiscus rosa sinensis, Eclipta alba, and Solanum nigrum extracts, demonstrating consistent homogeneity, 5 α-reductase inhibitory activity, and no skin irritation.

In this study, researchers evaluated the hair growth-promoting effects of strawberry water-extract on human follicle dermal papilla cells and found it enhanced cell metabolism, though it did not significantly alter hair growth-related gene expression.

This study found that MK-386 selectively suppressed sebum DHT levels in a dose-dependent manner, suggesting potential use for treating acne.

This study found that human dermal fibroblasts can promote the viability and proliferation of microvascular endothelial cells in vitro, revealing important interactions at play in hair growth.