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Abstract

Rosella (Hibiscus sabdariffa L.) calyx traditionally used to treat various diseases. There is limited evidence based could be found including the efficacy and safety. The present study was aimed to investigate the effects of subchronic administration of Rosella calyx extract on the renal function of female Sprague Dawley (SD) rats. The rosella calyx was extracted by 70% ethanol and evaporated with a rotary evaporator to get concentrated extract. The Sprague Dawley rats were randomly divided into five groups including control group which was given CMC Na 0.5% and treated groups were administered orally with the extract of 50, 100, 200 mg/kg bw for 35 days. The satellite group was conducted for observing the reversibility, the observation in this group was conducted 14 days after 35 days of treatment. The biochemical function including ureum and creatinine was analyzed from a blood sample using enzymatic UV-test, and creatinine level were observed by the Jaffe method. The histopathology profile of kidney was observed with Hematoxylin and Eosin staining and followed by microscopic observation. The results showed that ureum levels in treated groups (50, 100, 200, and satellite groups was significantly difference (p<0.05) compare to the control group. The creatinine levels also were found to show significant differences (p<0.05) between the control group with treated groups (50, 100, 200 and satellite group). But the increasing creatinine levels are still within normal range. However, the histopathological profile of animals did not reveal any morphological damage.