89 citations
,
August 2013 in “PloS one” Androgen receptors are active in many tissues of both male and female mice, not just reproductive organs.
July 2021 in “Journal of medical pharmaceutical and allied sciences” Amenorrhea, or missing periods, is caused by various factors and is treated based on the specific cause.
1 citations
,
February 2015 in “Revista Acadêmica Ciência Animal” A mare had a functional ovary with a tumor containing cartilage and bone.
11 citations
,
November 2006 in “Journal of Veterinary Diagnostic Investigation” An alpaca acted like a male and couldn't have babies because of a benign tumor in its ovary that caused high testosterone levels.
April 2024 in “International Journal of Advanced Multidisciplinary Research and Studies” Early investigation and a team approach are crucial for managing primary amenorrhea effectively.
25 citations
,
March 2004 in “Regulatory Toxicology and Pharmacology” Using testosterone-stimulated weanling rats can effectively replace castrated rats for anti-androgen testing, reducing animal stress.
Neurosteroids help regulate oxytocin levels, especially during stress and pregnancy, to protect against premature labor.
62 citations
,
August 2018 in “Frontiers in Endocrinology” Androgens are important for normal ovarian function and estrogen production, but may not be the main cause of follicle death.
3 citations
,
February 1992 in “Journal of veterinary medicine. Series A” The farm-raised blue fox had a delayed winter coat cycle and abnormal hormone levels, but its hair growth and hormone changes were still linked.
17 citations
,
November 2017 in “Experimental physiology” Breathing in newborn rats is affected differently by hormones based on their sex.
90 citations
,
January 2002 in “Dermatology” Kenogen is a resting phase in hair follicles that may contribute to baldness, especially in androgenetic alopecia.
16 citations
,
April 1978 in “Genetics Research” Mice with the ab gene have abnormal sebaceous gland development, affecting sebum production.
21 citations
,
September 2004 in “Fertility and Sterility” Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.
26 citations
,
April 2003 in “PubMed” Hair loss in two ferrets was caused by ovarian tissue tumors, not adrenal issues.
Ovulation inhibitors effectively treat menstrual issues and improve fertility but can have side effects.
12 citations
,
February 2017 in “Journal of neuroscience research” Removing certain brain receptors in mice worsens seizure severity and response to treatment during hormone withdrawal.
October 2016 in “Journal of Case Reports” A rare ovarian tumor can occur without causing male-like symptoms.
1 citations
,
April 2011 in “The FASEB Journal” Progesterone-derived neurosteroids affect GABA-A receptor expression, influencing epilepsy during menstrual cycles.
October 2025 in “Journal of Obstetric and Gynaecological Practices POGS” 9 citations
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November 2014 in “Indian Journal of Endocrinology and Metabolism” A 15-year-old girl with rare reproductive disorders received hormone therapy to develop secondary sexual traits, but infertility persisted.
3 citations
,
December 2019 in “Journal of Dermatological Treatment” Acne in adult women may occur alone or with signs of high male hormones.
17 citations
,
November 1967 in “American Journal of Anatomy” Hairless mice have longer hair follicles and abnormal structures during the catagen phase.
43 citations
,
January 2006 in “PubMed” Androgens and estrogens are crucial for male reproductive health, affecting hormone levels and tissue function.
January 2025 in “Arquivo Brasileiro de Medicina Veterinária e Zootecnia” Agoutis in captivity have more resting (telogen) hairs than growing (anagen) hairs, regardless of season or gender.
18 citations
,
March 2014 in “Journal of Pharmacological and Toxicological Methods” The animal models successfully simulated dry eye related to sex steroid deficiency.
January 2007 in “UKnowledge (University of Kentucky)” Steers with winter hair coats and reduced sweating struggled with heat, leading to less grazing and poor performance.
January 2025 in “Brazilian Journal of Veterinary Medicine/Revista Brasileira de Medicina Veterinária” Deslorelin implant successfully regrew hair in a female Pomeranian with alopecia X.