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Histological changes in the uterus during postpartum in the mare
C Gomez-Cuetara1, J M Flores, J Sanchez
1Department of Animal Pathology II, Veterinary School, Complutense University, Madrid, Spain.
Anatomia, Histologia, Embryologia
|March 1, 1995
Summary
Equine postpartum uterine healing involves significant histological changes, with full recovery typically observed by days 9-10. This study details the daily endometrial regeneration process in mares following parturition.
Area of Science:
- Veterinary Medicine
- Reproductive Biology
- Histology
Background:
- The postpartum period is critical for mare reproductive health.
- Understanding equine endometrial repair is essential for fertility management.
Purpose of the Study:
- To histologically characterize the equine endometrium during the first 10 days postpartum.
- To document the timeline and nature of postpartum uterine involution in mares.
Main Methods:
- Daily uterine biopsies were collected from 29 mares for the first 10 days postpartum.
- A total of 87 endometrial samples were analyzed histologically.
Main Results:
- Day 0: Edematous stratum spongiosum, scarce glands, and ordered microcaruncles.
- Days 1-5: Degenerative changes, inflammation with neutrophils, and epithelial vacuolization.
- Days 7-10: Endometrium returns to a proestrus-like state, with complete histological recovery by day 10.
Conclusions:
- Equine postpartum uterine involution is a dynamic process involving inflammation and regeneration.
- Histological changes are resolved within 10 days, restoring the endometrium to its estrus appearance.