2004•PubMedRequires access
[TGF-beta1mRNA levels in renal cortex and peripheral blood mononuclear cells of diabetic rats].
Hong Li, Fenping Zheng, Zhe Zhang
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Abstract
OBJECTIVE: To investigate the effect of hyperglycemia and pioglitazone on TGF-beta(1) gene expression in peripheral blood mononuclear cells (PBMC) and renal cortex, and the correlation of TGF-beta(1)mRNA levels between PBMC and renal cortex in STZ induced diabetic rats. METHODS: Fifty-four Sprague-Dawley rats were randomly divided into three groups: 18 normal control rats (group C), 18 diabetic rats (group D) and 18 diabetic rats treated with pioglitazone (20 mg x kg(-1)x d(-1), group DP). Six rats from each group were sacrificed at 2, 4, 8 weeks. TGF-beta(1)mRNA levels of PBMC and renal cortex were examined by RT-PCR+Slit hybridization analysis. RESULT: TGF-beta(1)mRNA level of renal cortex in group D was significantly higher than that in group C at each time point (P<0. 05); TGF-beta(1)mRNA level of PMBC in group D was slightly higher than that of group C at 4 weeks, and significantly higher at 8 weeks (P=0.01). There was positive correlation of TGF -beta(1)mRNA level between PBMC and renal cortex before (r=0.83, P=0.02) and after pioglitazone treatment at 8 weeks (r=0.82, P=0.03). CONCLUSION: TGF-beta(1)mRNA level of PBMC may reflect the change of TGF-beta(1) gene expression of renal cortex in diabetic rats.