Vasoprotective Effect of Physalis Angulata L. Leaf Water Extract on Kidney Of Nω-Nitro-L-Arginine Methyl Ester-Induced Endothelial Dysfunction Rat Model

Abstract

This study was to investigate the effect of Physalis angulata L. leaf water extract on vascular rarefaction, oxidative stress, and inflammation on the kidney of Nω-nitro-L-arginine methyl ester (L-NAME)-induced male Wistar rats. Methods: A total of 25 male Wistar rats were divided into five equal groups (normal control: 40 mg/kg/day of normal saline; L-NAME group; and treatments I, II, and III: L-NAME plus P. angulata L. leaf water extract doses 500 mg/kg/day, 1500 mg/kg/day, and 2500 mg/kg/day, respectively). Endothelial dysfunction was induced by 40 mg/kg/day L-NAME intraperitoneally. The treatment lasts for 15 days. Vascular rarefaction was indicated by the decrease in vascular density, which considered as vascular number per high-power field in hematoxylin-eosin staining preparation. Kidney oxidative stress test was performed by measuring malondialdehyde (MDA) level with thiobarbituric acid reactive substances assay. The inflammatory marker was the nuclear factor kappa-lightchain-enhancer of activated B cells (NF-κB) expression which examined using an immunohistochemical method with an antibody against p65. Results: At the dose of 500 mg/kg/day and 1500 mg/kg/day, P. angulata leaf water extract supplementation increased the vascular density, decreased the MDA level, and decreased the NF-κB expression compared to the L-NAME group. Conclusion: The administration of P. angulata L. leaf water extract in particular concentration has a vasoprotective effect by preventing kidney vascular rarefaction, oxidative stress, and inflammation on L-NAME-induced male Wistar rat.