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ABSTRACT
Objective: We aimed to investigate Th22 cells and their association with Th17 and Treg cells in the etiology of severe preeclampsia (sPE).
Methods: Thirty sPE patients and 30 healthy pregnant women were recruited in this study. The percentages of Th17, Th22, and regulatory T cells (Tregs) in the peripheral blood were measured by flow cytometry. ELISA was used to measure the plasma concentrations of interleukin (IL)-17, IL-22, and IL-10.
Results: The percentages of Th17 and Th22 cells and the plasma concentrations of IL-17 and IL-22 were significantly increased in sPE patients along with a decreased percentage of Treg cells and a decreased plasma IL-10 concentration. There was a positive correlation between the levels of Th22 cells and Th17 cells in sPE patients. Moreover, a positive correlation was found between plasma IL-22 concentration and the percentage of Th22 cells in sPE patients.
Conclusions: Increased circulating Th22 cells, which were correlated with Th17 cells, were observed in patients with sPE. The immune imbalance between T helper (Th) cells may contribute to the pathogenesis of sPE.
Acknowledgments
We thank Dr. Lin Li for experimental instruction. We are grateful for the excellent technical assistance from the Research Center and clinical laboratory of The Third Affiliated Hospital of Zhengzhou University.
Declaration of conflicting interests
The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Medical Science and Technique Foundation of Henan Province of China (grant number 201402020).