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ISSN: 2150-3494

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Research Article

Evaluation of Nootropic and Anti-Nociceptive Activity of Green Tea in Comparison with Medhya Rasayana

Sharadha Srikanth1*, Joel Chandrakanth1, Prathyusha K1, Krishnamohan G2 and Uma Maheswara Rao V1

1CMR College of Pharmacy, Kandlakoya (v), Medchal road, Hyderabad, India

2Centre forPharmaceutical Sciences, JNTU, Hyderabad, India

Corresponding Author:
Sharadha Srikanth
CMR College of Pharmacy, Kandlakoya (v)
Medchal road, Hyderabad, India
Tel: 9885833269
E-mail: [email protected]

Received December 03 2013; Accepted April 18, 2014; Published April 26, 2014

Citation: Sharadha S, Joel C, Prathyusha K, Krishnamohan G, Uma Maheswara Rao V (2014) Evaluation of Nootropic and Anti-Nociceptive Activity of Green Tea in Comparison with Medhya Rasayana . Chem Sci J 5:82. doi:10.4172/2150-3494.1000082

Copyright: © 2014 Sharadha S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Green tea (Camellia sinesis) is a known traditional medicinal plant that has been consumed for its putative nutritional and health benefits for centuries. The polyphenols found in green tea are epicatechin, epicatechin-3- gallate, epigallocatechin, and epigallocatechin-3-gallate (EGCG), comprise 30-40 percent of the extractable solids of dried green tea leaves. Green tea polyphenols have demonstrated significant antioxidant activity. In the present study aqueous extract of green tea (10 ml/kgp.o), methanolic extract of green tea (5 ml/kg p.o) and standard Piracetam (150 mg/kg body weight p.o) were used to evaluate the Nootropic activity. Its behavioral studies on mazes like Elevated plus Maze, Morris Water Maze and avoidance behavior on step down type passive avoidance models were performed, whole brain acetyl cholinesterase enzyme activity was also estimated. For evaluating the analgesic activity, analgesic models like hot plate and acetic acid induced writhing were performed. Methanolic extract of green tea showed significant (p<0.01) change in evaluation parameters like transfer latency and step down latency when compared with the aqueous extract of green tea. Methanolic extract of green tea showed better antinociceptive activity in acetic acid induced writhing model (41.6%) when compared to hot plate method (6.64%). Whole Brain acetyl cholinesterase enzyme activity was performed and the results indicated that the methanolic extract of green tea (p<0.01) has better nootropic activity than aqueous extract. The results proved that the methanolic extract of green tea has better Nootropic and anti-nociceptive activity when compared with the aqueous extract of green tea. Methanolic extract of green tea also proved to be superior to the marketed product, Medha rasayana as a memory enhancer.

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