Diabetes Aggravates Post-ischaemic Renal Fibrosis through Persistent Activation of TGF-β1 and Shh Signalling

Diabetes Aggravates Post-ischaemic Renal Fibrosis through Persistent Activation of TGF-β1 and... Diabetes is a risk factor for acute kidney injury (AKI) and chronic kidney disease (CKD). Diabetic patients are easy to progress to CKD after AKI. Currently, activation of fibrotic signalling including transforming growth factor-β1 (TGF-β1) is recognized as a key mechanism in CKD. Here, we investigated the influence of diabetes on CKD progression after AKI by using a unilateral renal ischaemia–reperfusion injury (IRI) model in diabetic mice. IRI induced extensive tubular injury, fibrosis and lymphocyte recruitment at 3 weeks after IRI, irrespective of diabetes. However, diabetes showed sustained tubular injury and markedly increased fibrosis and lymphocyte recruitment compared with non-diabetes at 5 week after IRI. The mRNAs and proteins related to TGF-β1 and sonic hedgehog (Shh) signalling were significantly higher in diabetic versus non-diabetic IRI kidneys. During the in vitro study, the hyperglycaemia induced the activation of TGF-β1 and Shh signalling and also increased profibrogenic phenotype change. However, hyperglycaemic control with insulin did not improve the progression of renal fibrosis and the activation of TGF-β1 and Shh signalling. In conclusion, diabetes promotes CKD progression of AKI via activation of the TGF-β1 and Shh signalling pathways, but insulin treatment was not enough for preventing the progression of renal fibrosis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Scientific Reports Springer Journals

Diabetes Aggravates Post-ischaemic Renal Fibrosis through Persistent Activation of TGF-β1 and Shh Signalling

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Publisher
Nature Publishing Group UK
Copyright
Copyright © 2017 by The Author(s)
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
eISSN
2045-2322
D.O.I.
10.1038/s41598-017-16977-z
Publisher site
See Article on Publisher Site

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