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KMID : 0620920110430120646
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Experimental & Molecular Medicine
2011 Volume.43 No. 12 p.646 ~ p.683
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Effects of ferulic acid on diabetic nephropathy in a rat model of type 2 diabetes
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Choi Ran
Kim Bo-Hwan
Jarinyaporn Naowaboot
Lee Mi-Young
Hyun Mi-Ri
Cho Eun-Ju
Lee Eun-Soo
Lee Eun-Young
Yang Young-Chul
Chung Choon-Hee
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Abstract
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Diabetic nephropathy is the most serious complication in diabetes mellitus. It is known that oxidative stress and inflammation play a central role in the development of diabetic nephropathy. In this study, we investigated that ferulic acid (FA) known as anti-oxidative agent could effect on diabetic nephropathy by anti-oxidative and anti-inflammatory mechanism. We examined the effects of FA in obese diabetic Otsuka Long-Evans Tokushima Fatty (OLETF) rats and non-diabetic control Long-Evans Tokushima Otsuka (LETO) rats. We treated FA to experimental rats from 26 to 45 weeks of age. We evaluated ACR, MDA and MCP-1 in 24 h urine and examined renal histopathology and morphologic change in extracted kidneys from rats. Also, we evaluated the ROS production and MCP-1 levels in cultured podocyte after FA treatment. In the FA-treated OLETF rats, blood glucose was significantly decreased and serum adiponectin levels were increased. Urinary ACR was significantly reduced in FA-treated OLETF rats compared with diabetic OLETF rats. In renal histopathology, FA-treated OLETF rats showed decreased glomerular basement membrane thickness, glomerular volume, and mesangial matrix expansion. FA treatment decreased oxidative stress markers and MCP-1 levels in 24 h urine of rats and supernatants of cultured podocyte. In conclusion, it was suggested that FA have protective and therapeutic effects on diabetic nephropathy by reducing oxidative stress and inflammation.
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KEYWORD
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diabetes mellitus, experimental, diabetic nephropathies, ferulic acid, inflammation, oxidative stress
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