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English Abstract
Journal Article
[Modulative effect of zhenqing recipe on expressions of matrix metalloproteinase-9 and tissue inhibitor of matrix metalloproteinase-1 in experimental type 2 diabetic rats].
OBJECTIVE: To explore the effect of Zhenqing Recipe (ZQR) on renal structure and expressions of matrix metalloproteinase-9 (MMP-9), tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) in experimental type 2 diabetic rats.
METHODS: The rat models of type 2 diabetic were set up by intraperitoneally giving small-dose streptozotocin (STZ) after fed with high carbohydrate and high fat diets for one month. The model rats were randomly divided into the model group,the high and low dose ZQR-treated groups,and the enalapril-treated group; a normal control group was also established. The course of treatment continued 8 weeks. The expressions of MMP-9, TIMP-1, and fibronectin (FN) in renal tissues were detected by immunohistochemistry. The morphological changes of glomeruli and renal tubules were checked by microscopy.
RESULTS: Compared with the normal control group, the expression of TIMP-1 and FN increased and MMP-9 decreased in the model group; the treated groups could decrease the expressions of TIMP-1 and FN, and increase the expression of MMP-9, especially the high-dose ZQR group had the best effect. The morphological changes of renal tubules and glomerulus in the treated groups were improved better as compared with the model group.
CONCLUSION: The protective effect of ZQR on renal structure may be achieved by modulating the expressions of MMP-1 and TIMP-1.
METHODS: The rat models of type 2 diabetic were set up by intraperitoneally giving small-dose streptozotocin (STZ) after fed with high carbohydrate and high fat diets for one month. The model rats were randomly divided into the model group,the high and low dose ZQR-treated groups,and the enalapril-treated group; a normal control group was also established. The course of treatment continued 8 weeks. The expressions of MMP-9, TIMP-1, and fibronectin (FN) in renal tissues were detected by immunohistochemistry. The morphological changes of glomeruli and renal tubules were checked by microscopy.
RESULTS: Compared with the normal control group, the expression of TIMP-1 and FN increased and MMP-9 decreased in the model group; the treated groups could decrease the expressions of TIMP-1 and FN, and increase the expression of MMP-9, especially the high-dose ZQR group had the best effect. The morphological changes of renal tubules and glomerulus in the treated groups were improved better as compared with the model group.
CONCLUSION: The protective effect of ZQR on renal structure may be achieved by modulating the expressions of MMP-1 and TIMP-1.
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