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Objective:To explore the mechanism of modified Xiaoyao Powder on inflammatory response of rats with syndrome of stagnation of liver qi and spleen deficiency of experimental autoimmune thyroiditis (EAT) from the perspective of differentiation of microrna 326 (miR326) regulating Th17 cell.Methods:48 rats were randomly divided into normal group (12 rats) and model group (36 rats) respectively and they were immunized twice a week with high iodine water combined with subcutaneous injection of thyroglobulin. From the fifth to eighth weeks, 36 rats were immunized once a week. From the fifth week, the model group with liver depression and spleen deficiency syndrome of Traditional Chinese Medicine was reproduced with chronic restraint stress, excessive fatigue and eating incoherence methods. The modelrats were randomly divided into model group, Xiaoyao Powder group and Jinshuibao group. Rats in Xiaoyao Powder group were gavaged with 13.63 g/(kg·d) Xiaoyao Powder modified granule suspension, and rats in Jinshuibao group were gavaged with 477 mg/(kg·d) Jinshuibao suspension, twice a day, for 8 weeks.The levels of serum FT3, FT4, TSH, TGAb and TPOAb were detected by ELISA; the expression of miR326, IL-17 mRNA, IL-4 mRNA and IFN-γ mRNA were detected by PCR. The expression of Ets-1 protein in thyroid tissue was detected by Wes method, and the proportion of CD4 + IFNγ + T cells, CD4 + IL-4 + T cells and CD4 + IL-17 + T cells were detected by flow cytometry, HE staining was used to detect the pathological manifestations of thyroid tissue in each group. Results:Compared with the model group, the serum TSH [(3 328.88±724.45) pg/ml vs. (1 900.25±203.91) pg/ml] in Xiaoyao Powder group increased ( P<0.01), TGAb [(63.60±9.01) IU/ml vs. (96.19±10.74) IU/ml] and TPOAb [(6.84±1.45) IU/ml vs. (11.62±2.06) IU/ml] decreased ( P<0.01), and the expression of miR326 (3.57±0.57 vs. 7.63±0.90),IL-17 mRNA (6.71±0.97 vs. 13.02±1.18) significantly decreased ( P<0.01), the expression of Ets-1 (0.71±0.40 vs. 0.39±0.02) significantly increased ( P<0.01), the ratio of CD4 +IFN-γ + T cell [(13.10±2.23)% vs. (20.7±2.07)%], CD4 +IL-17 + T cell ratio [(18.90±1.31)% vs. (25.1±1.03)%] significantly decreased ( P<0.01), and thyroid histopathology changed significantly. Conclusion:Modified Xiaoyao Powder could regulate the expression of target protein Ets-1 upward, inhibit the differentiation of Th17 cells and further reduce the expression of IL-17 mRNA by regulating the expression of mir-326 downward in the thyroid tissue of EAT rats, so as to improve the inflammatory response of rats with liver depression and spleen deficiency.
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Objective To investigate the effects of metformin(Met)on liver function,chronic inflammation and liver fibrosis in rats with type 2 diabetes mellitus (T2DM) combined with nonalcoholic fatty liver disease (NAFLD). Methods 4 groups of rat models were established:the control group(group A),T2DM group(group B),T2DM+NAFLD group(group C)and T2DM+NAFLD+Met group(group D). After grouping,the specimens of blood and liver tissues were taken. Serum liver function,C-reactive protein(CRP),tumor necrosis factor-α (TNF-α)and interleukin-6(IL-6)were detected,and then their insulin resistance was assessed. The pathological changes of the liver were detected by HE staining,oil red O staining,Masson staining and reticular fiber staining, and the expression of TNF-α,IL-6 and CRP in liver tissue was detected by immunohistochemistry. Results (1) The degree of insulin resistance and hypohepatia in group B and C were higher than those in group A,and those of group D were lower than those in group C.(2)The levels of inflammatory cytokines in group B and C were higher than those in group A,and the level in group D were lower than those in group C.(3)The pathological examination of liver showed that there was significant fatty degeneration,fatty inflammation and fibrosis in the livers of group C,and group D was better than those in group C. Conclusions Met is effective in the improvement of insulin resis-tance,hypohepatia,chronic inflammation and liver fibrosis in type 2 diabetes mellitus associated with non-alco-holic fatty liver disease,which in mechanism may be related to the decreased expression of inflammatory factors and improved chronic inflammatory state.
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Objective To investigate the change of serum level of IL-6 and TNF-? in patients with Graves disease(GD). Methods Serum IL-6 and TNF-? levels of 37 GD patients before and after treatment were measured. And 30 healthy subjects served as controls. Results Serum levels of IL-6 and TNF-? in GD patients before treatment were significantly higher than those in the controls(P
