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Kallistatin protects against diabetic nephropathy in db/db mice by suppressing AGE-RAGE-induced oxidative stress.
Kidney Int ; 89(2): 386-98, 2016 Feb.
Article en En | MEDLINE | ID: mdl-26536000
ABSTRACT
Kallistatin is a serine protease inhibitor with anti-inflammatory, anti-angiogenic, and anti-oxidative properties. Since oxidative stress plays a critical role in the pathogenesis of diabetic nephropathy, we studied the effect and mechanisms of action of kallistatin superinduction. Using ultrasound-microbubble-mediated gene transfer, kallistatin overexpression was induced in kidney tubules. In db/db mice, kallistatin overexpression reduced serum creatinine and BUN levels, ameliorated glomerulosclerosis and tubulointerstitial injury, and attenuated renal fibrosis by inhibiting TGF-ß signaling. Additionally, downstream PAI-1 and collagens I and IV expression were reduced and kallistatin partially suppressed renal inflammation by inhibiting NF-κB signaling and decreasing tissue kallikrein activity. Kallistatin lowered blood pressure and attenuated oxidative stress as evidenced by suppressed levels of NADPH oxidase 4, and oxidative markers (nitrotyrosine, 8-hydroxydeoxyguanosine, and malondialdehyde) in diabetic renal tissue. Kallistatin also inhibited RAGE expression in the diabetic kidney and AGE-stimulated cultured proximal tubular cells. Reduced AGE-induced reactive oxygen species generation reflected an anti-oxidative mechanism via the AGE-RAGE-reactive oxygen species axis. These results indicate a renoprotective role of kallistatin against diabetic nephropathy by multiple mechanisms including suppression of oxidative stress, anti-fibrotic and anti-inflammatory actions, and blood pressure lowering.
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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Terapia Genética / Serpinas / Nefropatías Diabéticas / Receptor para Productos Finales de Glicación Avanzada Límite: Animals Idioma: En Revista: Kidney Int Año: 2016 Tipo del documento: Article
Buscar en Google
Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Terapia Genética / Serpinas / Nefropatías Diabéticas / Receptor para Productos Finales de Glicación Avanzada Límite: Animals Idioma: En Revista: Kidney Int Año: 2016 Tipo del documento: Article