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Role of mast cells in cow metritis Cover
Open Access
|May 2016

Abstract

Introduction: Bovine postpartum metritis causes great losses. Mast cell (MC)-released mediators participate in uterine inflammation and immune response, but their role in postpartum metritis in cows has not been reported. This study investigated the effect of endometrial MC on the disorder.

Material and Methods: Ten dairy cows, at 6 to 10 days postpartum and with acute purulent metritis made up the experimental group, and 10 comparable healthy cows the control group. Endometrial histamine and IgE levels were determined by ELISA, and the MC particle state and expression of histamine H1 (H1R) and H2 (H2R) mRNA receptors were examined by transmission electron microscope and real-time quantitative PCR, respectively.

Results: Endometrial histamine and IgE levels were significantly higher in the experimental group. In the control group, homogenously distributed size-varied granules were seen in MC cytoplasm of endometrium of lamina propria. In the experimental group however, these showed degranulation with features of reduction. The level of H1R mRNA was lower in the experimental group, but that of H2R mRNA was higher.

Conclusion: The results suggest MC type I hypersensitivity characteristics during metritis, and histamine provocation of local inflammation. High expression of H2R and low expression of H1R inhibited the inflammatory response and prevented excessive uterine tissue damage.

Language: English
Page range: 177 - 180
Submitted on: Oct 16, 2015
Accepted on: May 16, 2016
Published on: May 28, 2016
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2016 Guo-Qing Wang, Jin-Long Hou, Huan-Yu Huang, Chao-Wen Yuan, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.