نبذة مختصرة : Background and Objective:The increased response of T helper (Th) 22cells might be involved in thepathogenesis ofType 2 Diabetes Mellitus (T2DM). The present study aimed to investigate the transcription factor of Th22 cells (aryl hydrocarbon receptor [AHR]) and interleukin 22 (IL-22) in CD4+ T cells as well as the impact of oral empagliflozin treatment. The correlation between the aforementioned factors and clinical parameters was also determined among the patients. Materials and Methods:In this case-control study, 50 patients under the treatment of metformin and gliclazide were divided into two equal groups, including the patients receiving empagliflozin (EMPA+) and not receiving empagliflozin (EMPA, as the control group). The peripheral blood CD4+ T cells were isolated on the initiation day of the study and after 6 months of therapy, and the gene expression levels of AHR and IL-22 were evaluated by real-time polymerase chain reaction. In addition, the production of IL-22 after activation was measured using enzyme-linked immunosorbent assay. Results:The levels of fasting plasma glucose and hemoglobin A1c diminished in the EMPA+ group after empagliflozin therapy, compared to those reported at the baseline (initiation day; P
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