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This study observed that gerbils on a fat-deficient diet had altered fatty acid composition in various organs and exhibited hair loss, reduced testis development, and often lower body weight compared to those on a fat-supplemented diet.

This study suggests that finasteride at doses of 5 mg/kg BW or higher may adversely affect spermatogenesis and male fertility in NMRI mice.

This study concluded that finasteride-induced DHT deficiency intensified constitutive iNOS expression in rat testicular and epididymal cells, suggesting a complex regulatory relationship needing further investigation.

This study found that NNAT is localized in both undifferentiated and differentiated cells across various rat tissues and has cell-specific intracellular localization, suggesting distinct functional roles.

This study found that high voltage cathode rays caused significant damage to the spermiogenic epithelium of male adult white rats, showing particular sensitivity of germinal epithelium to radiation.

In this study using rats, finasteride-induced DHT deficiency led to morphological changes in seminiferous tubules, linked with altered junctional protein expression, potentially impairing fertility.

This review discusses the risk factors and implications of sperm aneuploidy in males, and it reports no new clinical results; the authors highlight the importance of personalized assessment in assisted reproduction.

This review discusses the flexibility and diversity of tissue stem cell systems, particularly focusing on the motility and ligand distribution of spermatogenic stem cells, without presenting new experimental results.

This study found that resveratrol significantly alleviated testicular damage in male rats caused by finasteride, which otherwise led to decreased testosterone levels and various histopathological alterations in the testes.

Finasteride may improve sperm count in subfertile men with low sperm count.

This article discusses the role of dihydrotestosterone in human prostatic adenocarcinoma growth and suggests that 6-methyleneprogesterone could be used to inhibit DHT for treating hormone-responsive prostate cancer, without new clinical findings.

This study found that chronic exposure to finasteride did not significantly impact spermatogenesis in rats.

This article presents a diagnostic case in the Journal of Small Animal Practice and reports no new research findings.

This study reviewed the literature on cryptorchidism in dogs and found it may be associated with dermatological issues like alopecia, with surgical intervention and cyclosporine offering partial benefit.

In this study, autologous intratesticular PRP injection was found to be a feasible and well-tolerated procedure with low complication rates and quick recovery, but the authors indicated that current evidence is insufficient to confirm its effectiveness for mTESE.

This review discusses the roles and mechanisms of chromatin remodelers and their subunits in mammalian development, but reports no new experimental results.

This study found that Cutl1 mutant mice experienced retarded lung differentiation and abnormal hair follicle morphogenesis, indicating the vital role of CDP in lung development and hair follicle cell-lineage specification.

This study found that activation of Wnt/β-catenin signaling in mouse testes promotes spermatogonial differentiation and reduces the stem cell pool, with SHISA6 inhibiting this process and maintaining stem cell characteristics.

This article reviews the effects of various medications on male fertility, noting that while commonly used drugs can mostly have reversible impacts, conclusive human evidence remains limited.

This study suggests that a position effect disrupting TRPS1 expression may be linked to hypertrichosis in both Ambras syndrome in humans and a similar phenotype in Koa mice.

This review highlights that idiopathic hirsutism is characterized by local hyperandrogenization affecting hair growth, without other signs of hyperandrogenism, and shows no new results; racial differences in prevalence are noted but not in androgenic steroids.

This review assesses the current literature on COVID-19's effects on male sexual and reproductive health, highlighting significant research gaps and providing guidance for patient counseling.

This review discusses the molecular mechanisms of masculinization involving androgen signaling and their roles in male embryonic development and conditions like hypospadias and prostate cancer, and reports no clinical results.

Testosterone replacement therapy can prevent men from fathering children and should not be used by those wanting to stay fertile.

Testosterone therapy aims to treat hormone deficiencies and various conditions safely and effectively, but requires careful patient monitoring due to potential side effects.

This review discusses the generation of germ cell-like cells from skin-derived stem cells and reports no new results; the potential for these cells to produce viable progeny remains unclear.

This review examines the diverse roles of SRD5α enzymes across species, focusing on their involvement in steroid synthesis, sexual development, and various physiological processes, but reports no new clinical results.

In this laboratory study with rats, treatment with finasteride reduced dihydrotestosterone levels and fertility parameters, with a 30-day recovery period proving insufficient to fully restore sperm function and fertility.

This study found that exposure to finasteride impaired spermatogenesis in male Xenopus laevis by affecting sex-specific feedback mechanisms in the hypothalamus–pituitary–gonad axis.

This chapter reviews selective androgen receptor modulators, discussing their therapeutic potential beyond current androgen applications, and reports no new clinical findings.