Abstract
The present study evaluated the protective effects of Centella asiatica (CA) leaf extract on behavioral deficits and neurotoxicity in adult rat exposed to lead during perinatal period. Adult Wistar rats were exposed to 0.15% lead acetate (Pb) from gestation day 6 through drinking water and the pups were exposed lactationally to Pb till weaning. Significant perturbations in locomotor activity and exploratory behavior were observed in rats exposed to Pb during perinatal period. The levels of lipid peroxidation increased significantly with a reduction in levels of glutathione and activity levels of acetylcholinesterase and antioxidant enzymes in hippocampus, cerebrum, cerebellum, and medulla of brains excised from Pb-exposed rats. Oral supplementation of CA during postweaning period provided significant protection against Pb-induced behavioral impairments and neurotoxicity, without chelating tissue Pb levels. The possible neuroprotective efficacy of CA may be due to its antioxidant potential but not by lowering effects of brain Pb content.
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Acknowledgements
The authors thank Dr. K.V.S. Sarma, Professor (Statistics), S.V. University, Tirupati, for providing assistance in the statistical analysis. KPR and CHS are grateful to the University Grants Commission, New Delhi, for financial support in the form of UGC-BSR (RFMS) fellowships.
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PSR conceived the idea, provided facilities, and supervised the work. KPR maintained rat colony and treatments and performed behavioral studies and assayed AChE activity. CHS prepared CA extract, analyzed the extract, and determined the Pb levels. KPR prepared rough draft of manuscript and all the authors read and approved the final version of the manuscript.
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All experimental investigations were done in compliance with the guidelines of the Committee for the Purpose of Control and Supervision of Experiments on Animals, Government of India (CPCSEA 2003). The protocol was approved by the Institutional Animal Ethics Committee (Regd. No. 438/01/a/CPCSEA/dt.17.07.2001) in its resolution no: 57/2012/(i)/a/CPCSEA/IAEC/SVU/ PSR-KPR dt.08-07-2012. The study was planned and organized as completely double blind.
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Chintapanti, S., Pratap Reddy, K. & Sreenivasula Reddy, P. Behavioral and neurochemical consequences of perinatal exposure to lead in adult male Wistar rats: protective effect by Centella asiatica. Environ Sci Pollut Res 25, 13173–13185 (2018). https://doi.org/10.1007/s11356-018-1500-x
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DOI: https://doi.org/10.1007/s11356-018-1500-x