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This study observed two distinct groups of alopecia areata lesions based on PD-1 expression in T cells from biopsied skin samples, suggesting potential differences in subtypes or stages of the disease that warrant further investigation.

This study found that in biopsied skin samples of alopecia areata, a lower anagen/telogen ratio was associated with increased T cell infiltration, and enhancing the PD-1/PD-L1 axis may inhibit CD8+T cell infiltration and improve the condition.

This study found that finasteride decreased plasma dihydrotestosterone levels and altered steroid metabolism, similar to the profile of male pseudohermaphrodites with inherited 5a-reductase deficiency.

This study found that the total testosterone/dihydrotestosterone ratio correlates with a negative metabolic profile in both women with PCOS and healthy women.

This study found that transgenic cashmere goats overexpressing thymosin beta-4 have a higher secondary to primary hair follicle ratio, suggesting potential for increased cashmere yield.

This letter discusses how outdated measurement technology may obscure evidence of essential fatty acid deficiency in low-fat diet patients, potentially leading to undiagnosed EFA insufficiencies related to heart disease.

This study found that the petroleum ether extract of Solanum nigrum may promote hair regrowth in testosterone-induced hair loss in rats, as indicated by increased follicle density and anagen/telogen ratio.

This study found that using 'moha: 5-in-1' hair oil for 8 weeks significantly reduced hair fall, increased hair growth rate and thickness, and decreased scalp dandruff among healthy adults with alopecia, with no adverse effects reported.

In this open-label study, the researchers observed that using Kerascalp hair serum daily for 90 days improved hair thickness, density, and strength while reducing hair loss in subjects with mild to moderate androgenetic alopecia, with benefits persisting even after discontinuation.

In this study, the researchers found that the ethyl acetate fraction of Sansevieria trifasciata P. (20%) was just as effective as minoxidil (2%) in promoting hair growth in male rabbits, with notable results in hair follicle proliferation and a favorable anagen to telogen ratio.

In this study, adding platelet-rich plasma to minoxidil and finasteride treatment for patterned hair loss improved hair outcomes with minimal side effects compared to using minoxidil and finasteride alone.

A botanical extract may help manage hair loss from chemotherapy by preventing cell death in hair follicles.

This study found that a botanical extract increased Bcl-2 levels and improved the anagen-to-telogen hair ratio in men with androgenetic alopecia, suggesting potential for managing chemotherapy-induced alopecia.

In this study, Minoxidil and other treatments prevented alopecia in mice induced by Paclitaxel, with quantitative data supporting the inhibition of hair loss.

This study found that Iranian patients with androgenetic alopecia had a higher terminal to vellus hair ratio compared to previous studies in Whites, suggesting potential onset of miniaturization.

This study found that using hair steroid profiling, dutasteride treatment led to reduced dihydrotestosterone levels and DHT/testosterone ratio in patients with male-pattern baldness.

This review discusses the use of anabolic-androgenic steroids in sports and outlines current methods for detecting urinary steroid doping, particularly testosterone, but reports no new experimental findings.

This study found that increased serum A4A levels were associated with more severe polycystic ovary syndrome phenotypes and could be a useful marker for biochemical hyperandrogenemia.

This study reported the development of a novel and reliable liquid chromatographic method to measure testosterone and epitestosterone in human urine, offering sensitive detection for doping control.

This study found that the occipital scalp is significantly involved in female pattern hair loss, with some patients showing clinically visible alopecia.

This article reviews the history and current medicolegal challenges of doping in sports, focusing on FIFA's procedures and three urgent legal issues, but presents no new findings.

This study found that AiQingHua oil improved microcirculation and promoted hair regeneration in mice with testosterone-induced alopecia.

This study found that combining concentrated growth factor injections with minoxidil treatment significantly improved hair growth and participant satisfaction in male patients with androgenetic alopecia compared to minoxidil alone.

In this pilot study, finasteride increased testosterone/dihydrotestosterone and progesterone/dihydroprogesterone ratios in normal ovulatory women but did not alter ovulation or gonadotropin secretion.

This study found that trichoscopy is an effective method for monitoring treatment response in androgenetic alopecia when conducted by doctors experienced in hair diseases, showing excellent agreement with TrichoScan measurements for various hair parameters.

In this study, researchers found that using a handheld digital microscope, hair diameter was a better determinant of perceived alopecia severity in androgenetic alopecia than hair density.

In this study, catgut embedding combined with moxibustion and bloodletting was reported to be more effective than finasteride for androgenetic alopecia, reducing hormonal imbalances and improving patient quality of life.

This study found no correlation between plasma androgen levels and androgenetic alopecia in women, suggesting that increased androgen action may not be reflected in these parameters.

This study reported that total glucosides of paeony capsules were as effective and safe as compound glycyrrhizin tablets for treating mild to moderate alopecia areata.

In this study, transverse sectioning of scalp biopsy samples showed higher diagnostic accuracy than vertical sectioning for noncicatricial alopecia, although both techniques are important for accurate diagnosis.