Changes in the Rat Blood Lymphocyte Composition in the Dynamics of Acute Irreversible Mesenteric Ischemia

Zoya Artamonova, Evgeny Namokonov, Marina Darenskaya, Natalya Semenova, Lyubov Kolesnikova, Sergey Kolesnikov
2020 International Journal of Biomedicine  
The aim of this research was to study the levels of the main populations of blood lymphocytes in various stages of acute irreversible arterial mesenteric ischemia in an experiment. Methods and Results: Acute mesenteric ischemia (AMI) was simulated by ligating the cranial mesenteric artery at the mesenteric root. The study was performed on white non-linear male rats, weighing 200±25g. According to the research protocol, the animals were divided into 3 groups depending on the time of compression
more » ... ime of compression of the general blood flow (3 hours (n=10), 6 hours (n=10), and 8 hours (n=10)). As a comparison, we used data from 30 animals (before artery ligation). The main populations and subpopulation structure of lymphocytes (total number of lymphocytes, CD3+ T cells, CD4+ T cells, CD8+ T cells, B cells, NK cells, and the CD4+/CD8+ ratio) were evaluated. We found that the content of lymphocytes in the venous blood of rats has been directly dependent on the time of ischemia. After 3 hours of AMI development, a statistically significant decrease in the total number of lymphocytes and an increase in the content of CD3+ T cells, CD4+ T cells, CD8+ T cells, and the CD4+/CD8+ ratio occur. After 6 hours of AMI development, a statistically significant decrease in the total number of lymphocytes was persisted. The number of CD8+ T cells decreased, while the level of CD4+T cells increased with increasing the CD4+/CD8+ ratio. In this period, a significant drop in the number of B cells was noted. After 8 hours of AMI development, more pronounced changes were observed concerning various populations of lymphocytes: a statistically significant decrease in the total number of lymphocytes, CD3+ T cells, CD4+ T cells, CD8+ T cells, B cells, and NK cells. It should be noted that during this period, the CD4+/CD8+ ratio increased by more than 3 times relative to the initial indicator. Conclusion: The significant decrease in the number of venous blood lymphocytes can be used to predict the severity of the disease in a comprehensive examination of patients with AMI. (International Journal of Biomedicine. 2020;10(3):270-273.)
doi:10.21103/article10(3)_oa14 fatcat:vu7zt7evkrdhjfllvct63uh4ze