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Our earlier work showed that hydromethanol extract (HME) of Pleurotus florida had antioxidant and anti-cholinesterase potential. This study aimed at isolating the constituent responsible for the activities. HME was subjected to bioactivity guided fractionation using in vitro anti-acetylcholinesterase (Ellman method) and antioxidant (DPPH scavenging assay). The most active constituent was evaluated in vivo employing i.c.v. streptozotocin (STZ) induced dementia in mice. Morris water maze test was used for evaluating memory, followed by biochemical estimations and histopathological studies. Bioactivity guided fractionation resulted in isolation of resveratrol (identified by IR, NMR and MS) and its content in P. florida fruiting bodies was 0.0098% (m/m, by a validated TLC densitometric method). It improved STZ induced dementia and neurodegeneration in mice by reducing brain acetylcholinesterase action and oxidative stress. The observed effects might be the presence of resveratrol. Our results further endorse that P. florida derived resveratrol can be a promising therapy for Alzheimer's disease.


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Isolation of Pleurotus florida derived acetylcholinesterase inhibitor for the treatment of cognitive dysfunction in mice

Show Author's information Kudrat RandhawaaVarinder Singhb( )Sanimardeep KauraRavinder KauraSuresh KumaraRicha Shria( )
Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, India
Chitkara College of Pharmacy, Chitkara University, Punjab, India

Peer review under responsibility of KeAi Communications Co., Ltd

Abstract

Our earlier work showed that hydromethanol extract (HME) of Pleurotus florida had antioxidant and anti-cholinesterase potential. This study aimed at isolating the constituent responsible for the activities. HME was subjected to bioactivity guided fractionation using in vitro anti-acetylcholinesterase (Ellman method) and antioxidant (DPPH scavenging assay). The most active constituent was evaluated in vivo employing i.c.v. streptozotocin (STZ) induced dementia in mice. Morris water maze test was used for evaluating memory, followed by biochemical estimations and histopathological studies. Bioactivity guided fractionation resulted in isolation of resveratrol (identified by IR, NMR and MS) and its content in P. florida fruiting bodies was 0.0098% (m/m, by a validated TLC densitometric method). It improved STZ induced dementia and neurodegeneration in mice by reducing brain acetylcholinesterase action and oxidative stress. The observed effects might be the presence of resveratrol. Our results further endorse that P. florida derived resveratrol can be a promising therapy for Alzheimer's disease.

Keywords: Alzheimer's disease, Mushrooms, Resveratrol, Acetylcholinesterase inhibitor, Pleurotus florida

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Publication history

Received: 09 September 2020
Revised: 10 October 2020
Accepted: 12 October 2020
Published: 04 June 2021
Issue date: July 2021

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© 2021 Beijing Academy of Food Sciences. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

Acknowledgements

Acknowledgements

The study was funded by University Grants Commission under UGC BSR fellowship scheme (Award no. F.4.25-1/2013-14(BSR)/7-265/2009(BSR)). The authors are thankful to Prof. Nirmal Singh and Mr. Pankaj Bhatia, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India for their help in carrying out animal studies. The authors are also thankful to DBT-IPLS project (Grant no: BT/PR4548/INF/22/146/2012), Punjabi University, Patiala, Punjab, India for providing HPTLC facility and Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India for providing the necessary laboratory facilities for this work.

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This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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