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June 2020 in “Scientific reports” Melatonin stimulates the skin components of ram's scrotum during their non-breeding season.
161 citations
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June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair stops producing melanin as it transitions from the growth phase to the resting phase.
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August 2015 in “Bioscience, Biotechnology, and Biochemistry” Obese mice with a leptin gene mutation have a longer resting phase in their hair cycle, which may help understand certain hair loss conditions.
38 citations
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October 2013 in “Gynecologic and Obstetric Investigation” Severe iron deficiency lowers fertility in female rats.
Finasteride worsens alcohol withdrawal in female mice but eases it in male mice.
24 citations
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January 2011 in “Sexual Development” Intersex frogs have different brain gene activity related to sex and thyroid hormones.
October 2020 in “Medicine - Programa De Formación Médica Continuada Acreditado” Female hyperandrogenism is a condition caused by too much male hormones, leading to skin issues and ovulation problems, often due to Polycystic Ovary Syndrome, and is treated based on individual symptoms.
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January 1985 in “Theriogenology” Hormonal treatments affect cow fertility and early embryo development.
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December 2018 in “Frontiers in Endocrinology” Differences in androgen receptor expression and tissue properties may lead to higher cryptorchidism risk in certain rats.
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April 2018 in “Biology of reproduction” Diet changes hormone levels in pregnant ewes by affecting metabolism, not placental synthesis.
156 citations
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October 1996 in “Science of The Total Environment” Tributyltin exposure causes sex changes, sterilization, and decline in the snail Ocinebrina aciculata, risking its extinction.
A spayed dog with vaginal bone structures causing infection was successfully treated by removing the bones and administering medication.
October 2022 in “Journal of the ASEAN Federation of Endocrine Societies” GnRH-a or orchiectomy is more effective than anti-androgens for managing hormone levels in transgender women.
October 2025 in “Frontiers in Toxicology” A new method effectively predicts estrogen-related health effects for early screening.
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January 1998 in “Pathobiology” The document concludes that certain rats and mice are useful for studying hair loss in humans and testing treatments.
January 2007 in “xPharm: The Comprehensive Pharmacology Reference”
A 73-year-old woman's unusual hair loss and growth led to the discovery of a rare condition causing too much testosterone, which improved after her ovaries were removed.
June 2025 in “Skin Research and Technology”
July 2024 in “Journal of Pediatric Endocrinology and Metabolism” Ovarian hyperthecosis should be considered in young women with severe male-like symptoms and can be managed with hormone treatments.
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March 2017 in “Development” Estrogen is important for keeping adult mouse nipple skin healthy by controlling certain cell signals.
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September 1992 in “Steroids” New A-homo-B, 19-dinor steroids showed strong antiandrogenic activity without affecting the enzyme 5α-reductase or androgen receptor binding.
November 2022 in “Journal of the Endocrine Society” A rare ovarian tumor caused high testosterone and excess hair in a woman, which was resolved after tumor removal.
February 2025 in “Veterinary Clinical Pathology” The ferret had a malignant apocrine gland tumor and did not survive surgery.
July 2022 in “L Endocrinologo” A 77-year-old woman with hair loss had high testosterone and 17OH-progesterone levels, but no significant findings on imaging.
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December 2000 in “The journal of investigative dermatology/Journal of investigative dermatology” Rat vibrissa follicles are useful for studying hair growth cycles, especially the transition from pro-anagen to anagen.
January 2014 in “HAL (Le Centre pour la Communication Scientifique Directe)” Sex hormones affect dog skin conditions, but more data is needed.
June 2024 in “European neuropsychopharmacology” Finasteride affects prostate development differently in male and female Mongolian gerbils.