THE EFFECT OF PROLONGED APPLICATION OF LARGE DOSES OF FOLLICULAR HORMONE ON THE UTERUS OF RABBITS

Area of Science:

• Reproductive endocrinology
• Comparative physiology

Background:

• Follicular hormone (estrogen) plays a key role in regulating uterine physiology.
• Understanding dose-dependent effects of hormones is crucial for reproductive health.

Purpose of the Study:

• To investigate the pathological effects of prolonged high-dose follicular hormone administration on the rabbit uterus.
• To compare the uterine response to follicular hormone in rabbits and rats.

Main Methods:

• Rabbits and rats were administered follicular hormone.
• Dose-response relationships and pathological changes in the uterus were observed and documented.

Main Results:

• Physiological doses of follicular hormone induced uterine wall hyperplasia and mucosal proliferation in rabbits.
• Prolonged high doses led to myometrial and endometrial hyperemia, glandular-cystic endometrial hyperplasia, myometrial necrosis, and uterine suppuration in rabbits.
• These pathological changes could occur simultaneously or sequentially.
• Rats did not exhibit the same pathological changes, indicating species-specific responses.

Conclusions:

• Follicular hormone exhibits a dose-dependent effect on the uterus, with physiological doses being stimulatory and prolonged high doses being destructive in rabbits.
• Hormone-induced uterine pathology is species-specific, as demonstrated by the differing responses between rabbits and rats.