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  • Title: [Effect of "Gubentongluo Formula" on the IgA Class Switch Recombination of B Lymohocytes in Peyer's Patches in Mice with IgA Nephropathy].
    Author: Shen PC, He LQ.
    Journal: Sichuan Da Xue Xue Bao Yi Xue Ban; 2016 May; 47(3):337-41. PubMed ID: 27468476.
    Abstract:
    OBJECTIVE: To explore the underlying mechanism of "Gubentongluo Formula" in treatment of IgA nephropathy (IgAN). METHODS: After the IgAN model was successfully induced at week 12, the Kunming mice were randomly divided into three groups: normal control group (n = 15), IgAN group (n = 15) and Traditional Chinese Medicine (TCM) group. The mice in normal control and IgAN group were intragastriclly administrated with normal saline for 8 weeks; meanwhile, the mice in TCM group were intragastriclly administrated with "Gubentongluo Formula" 1.35 mL/ (g · d). The levels of 24 h urine protein were determined at Week 0, 12 and 20. At week 20, the changes of renal pathology were detected; the mRNA expressions of transforming growth factor-β (TGF-β) and small mothers against decapentaplegic (Smad) 3 in Peyer's patches (PPs) were detected by fuorescent quantitative reverse transcription-polymerase chain reaction; the protein expressions of TGF-β and Smad 3 in PPs were detected by immunohistochemistry technique; the levels of (IgA + B)/B lymphocytes in PPs were determined by flow cytometry. RESULTS: Compared with those results of normal control group, the levels of 24 h urine protein, IgA deposition in glomerular mesangial area, and expressions of protein and mRNA of TGF-β and Smad3 in IgAN group were significantly increased (P < 0.01). Besides, the levels of (IgA+B)/B lymphocytes were significantly elevated in IgAN group (P < 0.01). All these indicators were improved in TCM group. Compared with IgAN group, the differences were statistically significant (P < 0.01). Compared with those results of control group, the levels of (IgA + B)/B lymphocytes showed no significant difference in TCM group (P > 0.05), but other indicators showed significant differences (P < 0.01). CONCLUSION: "Gubentongluo Formula" could effectively improve proteinuria and suppress IgA deposition in glomerular mesangial area in IgAN mice, due to affect IgA class switch recombination of B lymphocytes in PPs through regulating TGF-β/Smad3 pathway.
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