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This study found that 62% of neutered dogs with hair cycle arrest experienced partial to complete hair re-growth after melatonin treatment, but hair re-growth was not consistently linked to normal sex hormone levels.

This study found that irregular menstrual cycles in Brazilian adolescents were significantly associated with a higher occurrence of metabolic syndrome and polycystic ovary syndrome indicators.

This study found that deslorelin may promote hair regrowth in intact male dogs with hair cycle arrest, but had no effect on neutered females.

In this study, researchers found that disrupting the PRL gene in mice led to earlier hair molting, especially in females, suggesting that PRL inhibits murine hair cycle events.

This study found that disrupting the PRL gene in mice alters the timing of hair cycling events, causing earlier molts and changes in hair characteristics, particularly affecting female mice more significantly.

This study found that interleukin-10 deficiency in B6 mice led to inflammatory milk production due to maternal stress, causing alopecia and hepatocyte steatosis in pups.

This study found that neurosteroids can reorganize GABA A receptors in mice, mimicking ovarian cycle changes, with the process being mediated by neurosteroid levels rather than direct hormone receptor activation.

This study found that temperature affects the influence of daylength on prolactin secretion and hair growth in dairy goats, without significant involvement of melatonin.

This study found that in both rodents and humans, knee laxity increased at certain phases of the reproductive cycle due to sex-steroid influence, particularly under high levels of estrogen and progesterone.

This article discusses the discovery of the first known menstruating rodent, the spiny mouse, and proposes that a significant increase in progesterone during the luteal phase is a unique feature of menstruating species, but reports no new experimental results.

This article discusses the potential of acupuncture as a complementary or alternative therapy for PCOS, highlighting experimental evidence of its positive effects on reproductive and metabolic function, but reports no new clinical results.

This review discusses the potential benefits of Vitex negundo for managing polycystic ovarian disease, highlighting its promising effects in animal models, but notes that more rigorous human trials are needed to confirm these findings.

This review provides a comprehensive overview of melatonin's physiological roles, effects, and clinical implications, but it does not present new experimental findings.

This review discusses existing literature on the effects of isoflavone in alleviating PCOS symptoms, highlighting its potential benefits in reducing testosterone levels, improving metabolic profiles, and lowering inflammation and oxidative stress, although findings have been both significant and non-significant.

This study reports that hair samples can be used to track chronic hormone levels, revealing stress, reproductive, and sodium regulation patterns in wildebeest related to environmental factors.

This review discusses the role of estrogens in hair follicle cycling and the skin, highlighting the need for more research on estrogen signaling pathways and their interactions with other factors in hair biology.

Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.

This review underscores the importance of phytotherapeutic compounds and adjuncts in managing polycystic ovarian syndrome but does not present new clinical evidence.

This study reported that the PTGER2 gene is strongly expressed in cashmere goat skin and its expression tends to decrease from the anagen to telogen stages of the hair follicle cycle.

This study reports that melanocytes form a defined photoresponsive network in the skin that reads environmental light cycles and may influence the sleep-waking cycle similar to the pineal gland.

This study found that miR-370-3p targets SMAD4 to inhibit cell proliferation, promote apoptosis, and affect the cell cycle in follicular papilla cells, demonstrating differences in their expression in sheep tissues, which may impact hair follicle development.

This review investigates the potential benefits of cinnamon supplementation alongside lifestyle changes for managing obesity and polycystic ovary syndrome, but it reports no new clinical results.

This study identified key molecular differences between Long and Short hair type cashmere goats, suggesting hair type differentiation is linked to structural assembly and follicle remodeling.

This study suggests that ovarian cycle-related progesterone and neurosteroids regulate α2-subunit expression of GABA-A receptors in the hippocampus through a pathway independent of progesterone receptors, potentially affecting brain conditions linked to the menstrual cycle.

This review explores the potential benefits of plant-based diets, herbal remedies, and phytochemicals for managing PCOS, suggesting they may help regulate menstrual cycles, improve metabolic parameters, and reduce androgen levels, offering a promising, holistic approach to treatment.

This study found that DNA methylation may regulate the differential expression of the BMP7 gene in Hu sheep lamb skin of different patterns, and it influences the proliferation and cell cycle of dermal papilla cells, with demethylation treatment increasing BMP7 expression and cell proliferation.

This review discusses the interplay of hyperandrogenism, insulin resistance, obesity, and their role in polycystic ovary syndrome, but presents no new clinical results.

In this study, differences in protein expression related to twin lambing were identified in Tibetan sheep, providing insights into the reproductive performance and fertility improvement strategy for sheep in the Qinghai-Tibet Plateau.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.