Plasma cell numbers in uteri of mares with persistent endometritis and in ovariectomised mares treated with ovarian steroids.

The research article investigates the correlation between plasma cell counts in mare uteri suffering from chronic endometritis and those treated with ovarian steroids after undergoing ovariectomy. The study concludes that the application of ovarian steroids such as progesterone or oestradiol-17 beta and the presence of continuous endometritis do not heavily influence the plasma cell numbers.

Immunoperoxidase Staining

• The research utilised immunoperoxidase staining to localize Immunoglobulins A, G and M in the endometrial sections derived from mares that had undergone ovariectomy.
• Immunoperoxidase staining is a sensitive and specific method used to detect specific antigens in the tissues. In this study, it was used to identify and localise immunoglobulins (antibodies) in the mare endometrium.

Ovarian Steroids Treatment

• The mares used in the study were treated with ovarian steroids: progesterone or oestradiol-17 beta after their ovariectomy. It was observed that these hormone treatments did not significantly influence the number of cells that secrete any type of the mentioned immunoglobulins.
• The absence of a significant effect indicates that the treatment with these ovarian steroids does not alter the immune response in the mares’ uterus as shown by the unchanged counts of plasma cells.

Persistent Endometritis in Mares

• The study found that mares suffering from persistent endometritis, a chronic inflammation of the uterus lining, did not exhibit significantly greater numbers of endometrial plasma cells in comparison to healthy mares.
• This discovery suggests that plasma cells, which are responsible for secreting antibodies, are not significantly increased during persistent endometritis and thus may hint towards the utilization of alternative immune responses in dealing with such a chronic condition.