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Protective Effect of Dihydromyricetin Against Lipopolysaccharide-Induced Acute Kidney Injury in a Rat Model

Jun-Tao Wang, Peng Jiao, Yun Zhou, Qian Liu

(Department of Nephrology, The First People’s Hospital of Shangqiu, Shangqiu, Henan, China (mainland))

Med Sci Monit 2016; 22:454-459

DOI: 10.12659/MSM.897076

BACKGROUND: The present study investigated the effect of dihydromyricetin (DHM) on lipopolysaccharide (LPS)-induced acute kidney injury in a rat model.
MATERIAL AND METHODS: Kidney injury was induced in male Sprague-Dawley rats by injection of LPS through the tail vein. The rats were treated with 5 µg/kg body weight DHM within 12 h of the LPS administration. The urine of the rats was collected over a period of 48 h for determination of calcium and creatinine concentrations. Blood urea nitrogen in the serum was analyzed using a BC-2800 Vet Animal Auto Biochemistry Analyzer. On day 3 after treatment, the rats were sacrificed to extract the kidneys.
RESULTS: Treatment of the endotoxemia rats with DHM caused a significant (P<0.05) decrease in the level of kidney injury molecule‑1 and blood urea nitrogen. DHM treatment significantly (P<0.05) decreased the level of calcium in the kidney tissues compared to those of the untreated endotoxemia rats. The level of malonaldehyde (MDA) in the kidney tissues was significantly reduced in the endotoxemia rats by DHM treatment. The results from immunohistochemistry reveled a significant decrease in the expression of osteopontin (OPN) and CD44 levels. The endotoxemia rats showed significantly higher levels of TUNEL-positive stained nuclei compared to the normal controls. However, treatment of the endotoxemia rats with DHM resulted in a significant decrease in the population of TUNEL-positive cells.
CONCLUSIONS: DHM may be a promising candidate for the treatment of acute kidney injury.

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