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Sci. Pharm. 2013, 81(4), 1071-1088; doi:10.3797/scipharm.1302-09

Effect of Tephrosia purpurea (L.) Pers. Leaves on Gentamicin-Induced Nephrotoxicity in Rats

1
Department of Pharmaceutical Sciences, Doctor Hari Singh Gour Vishwavidyalaya, Sagar-470003 (M.P.), India
2
Mittal Institute of Pharmacy, Opp. BMHRC, Navibagh, Bhopal-462038 (M.P.), India
*
Author to whom correspondence should be addressed.
Received: 23 February 2013 / Accepted: 22 July 2013 / Published: 22 July 2013
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Abstract

The aim of the study was to evaluate the nephroprotective and nephrocurative effects of Tephrosia purpurea (L.) Pers. leaves against gentamicin-induced acute renal injury in albino rats. The maximum free radical scavenging activity of the ethanolic extract was the basis for the selection of this extract for the in vivo study. Gentamicin (40 mg/kg, s.c.) was administered to induce toxicity in the toxic group and the ethanolic extract (200 mg/kg p.o.) was administered in all treated groups. Blood urea and serum creatinine levels were monitored to assess the effects. The antioxidant potential was also evaluated by the estimation of reduced glutathione (GSH) and malondialdehyde (MDA). Gentamicin intoxication caused significant increases in blood urea and serum creatinine levels as compared to the normal control. In the preventive regimen, the extract (200 mg/kg, p.o.) showed significant reductions in the elevated blood urea and serum creatinine. Histopathological changes were in accordance with the biochemical findings. Also in the curative regimen, the blood urea and serum creatinine levels revealed significant curative effects. In our in vivo antioxidant activity, the GSH level was significantly (P< 0.05) increased in the extract-treated groups, whereas MDA was reduced significantly (P< 0.05). Further thin layer chromatography (TLC) and high-performance thin layer chromatography (HPTLC) led us to ascertain the presence of rutin and quercetin in the extract. We were able to isolate and characterize an isolate from the ethanolic extract and characterize it on the basis of chromatographic, melting point, FTIR, NMR, and mass spectroscopic studies. The findings suggest that the ethanol extract of Tephrosia purpurea leaves possesses marked nephroprotective and curative activities without any toxicity. The proposed mechanisms for the claimed activity are antioxidant activity and the inhibition of an overproduction of NO and Cox-2 expression. These activities may be attributed to the presence of phenolics and flavonoidal compounds like rutin and quercetin. Thus, it can be said that Tephrosia purpurea could offer a promising role in the treatment of acute renal injury caused by nephrotoxins like gentamicin.
Keywords: Blood urea; Serum creatinine; Nephroprotective; Quercetin; Gentamicin Blood urea; Serum creatinine; Nephroprotective; Quercetin; Gentamicin
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

JAIN, A.; NAHATA, A.; SINGHAI, A.K. Effect of Tephrosia purpurea (L.) Pers. Leaves on Gentamicin-Induced Nephrotoxicity in Rats. Sci. Pharm. 2013, 81, 1071-1088.

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