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Background   Ipomea aquatica  (Convolvulaceae) is traditionally used against Arsenic (As) poisoning in folk medicines in India. The present study was designed to explore the therapeutic role of aqueous extract of  I. aquatica  (AEIA) against As-intoxication.    Methods  AEIA was chemically standardized by spectroscopic and chromatographic analysis. The cytoprotective role of AEIA was measured on isolated murine hepatocytes. The effect on redox status were measured after incubating the hepatocytes with NaAsO 2  (10 μM) + AEIA (400 μg/ml). The protective effect of AEIA (400 μg/ml) in expressions of apoptotic proteins were estimated  in vitro . The protective role of AEIA was measured by  in vivo  assay in mice. Haematological, biochemical, As bioaccumulation and histological parameters were evaluated to ensure the protective role of AEIA (100 mg/kg) against NaAsO 2  (10 mg/kg) intoxication.    Results  Phytochemical analysis revealed presence of substantial quantities of phenolics, flavonoids, saponins and ascorbic acid in AEIA. Incubation of murine hepatocytes with AEIA (0–400 μg/ml) + NaAsO 2  (10 μM) exerted a concentration dependent cytoprotective effect. Incubation of murine hepatocytes with NaAsO 2  (10 μM, ~ IC 50 ) induced apoptosis via augmenting oxidative stress. NaAsO 2  treated hepatocytes exhibited significantly (p < 0.01) enhanced levels of ROS production, lipid peroxidation and protein carbonylation with concomitant depletion of antioxidant enzymes (p < 0.05-0.01) and GSH (p < 0.01) levels. However, AEIA (400 μg/ml) + NaAsO 2  (10 μM) could significantly (p < 0.05-0.01) reinstate the aforementioned parameters to near-normal status. Besides, AEIA (400 μg/ml) could significantly counteract (p <0.05-0.01) ROS mediated alteration in the expressions of apoptotic proteins viz. Bcl-2, BAD, Cyt C, Apaf 1, caspases, Fas and Bid. In  in vivo  bioassay, NaAsO 2  (10 mg/kg) treatment in mice caused significantly (p < 0.05-0.01) elevated As bioaccumulation, ATP levels, DNA fragmentations and oxidative stress in the liver, kidney, heart, brain and testes along with alteration in cytoarchitecture of these organs. In addition, the serum biochemical and haematological parameters were significantly (p < 0.05-0.01) altered in the NaAsO 2 -treated animals. However, concurrent administration of AEIA (100 mg/ml) could significantly reinstate the NaAsO 2 -induced pathogenesis.    Conclusion  Presence of substantial quantities of dietary antioxidants within AEIA would be responsible for overall protective effect.    Electronic supplementary material  The online version of this article (doi:10.1186/s12967-015-0430-3) contains supplementary material, which is available to authorized users.

Ameliorative effect of water spinach, Ipomea aquatica (Convolvulaceae), against experimentally induced arsenic toxicity