{"title":"Ellagic Acid Prevents Oxidative Stress and Memory Deficits in a Rat Model of Scopolamine-induced Alzheimer's Disease.","authors":"Amir Hossein Assaran, Mahsan Akbarian, Sabiheh Amirahmadi, Hossein Salmani, Shima Shirzad, Mahmoud Hosseini, Farimah Beheshti, Arezoo Rajabian","doi":"10.2174/1871524923666221027100949","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Ellagic acid (EA) has various pharmacological effects such as antiinflammatory and anti-oxidant effects.</p><p><strong>Objective: </strong>This study aimed to investigate the effects of EA on learning and memory dysfunction as well as oxidative stress in scopolamine-induced amnesic rats.</p><p><strong>Methods: </strong>The studied rats were treated according to the following protocol: Control (group 1) and scopolamine (group 2) groups received saline (intraperitoneal injection (i.p.)) while the treatment groups (group 3-5) were given EA (25, 50, and 100 mg/kg, i.p.) for 3 weeks. Thereafter, their behavioral performance was evaluated using Morris water maze (MWM) and passive avoidance (PA) tasks. Notably, scopolamine was injected (into groups II-V at a dose of 2 mg/kg, i.p.) before conducting the tasks. Finally, the oxidative stress indicators in the brain were measured.</p><p><strong>Results: </strong>EA reduced the escape latencies and distances during the learning phase of MWM. The results of probe trials also indicated that EA improved memory retrieval and helped animals recall the platform. Moreover, EA increased delay and light time, while decreasing the frequency of entries to the dark area of PA. In the EA-treated groups, the level of malondialdehyde was decreased, while the levels of total thiol groups, superoxide dismutase, and catalase were increased.</p><p><strong>Conclusion: </strong>EA prevented the negative effects of scopolamine on learning and memory which is probably mediated via modulating oxidative stress. Hence, EA could be considered as a potential alternative therapy for dementia.</p>","PeriodicalId":9799,"journal":{"name":"Central nervous system agents in medicinal chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Central nervous system agents in medicinal chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2174/1871524923666221027100949","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Psychology","Score":null,"Total":0}
引用次数: 3
Abstract
Background: Ellagic acid (EA) has various pharmacological effects such as antiinflammatory and anti-oxidant effects.
Objective: This study aimed to investigate the effects of EA on learning and memory dysfunction as well as oxidative stress in scopolamine-induced amnesic rats.
Methods: The studied rats were treated according to the following protocol: Control (group 1) and scopolamine (group 2) groups received saline (intraperitoneal injection (i.p.)) while the treatment groups (group 3-5) were given EA (25, 50, and 100 mg/kg, i.p.) for 3 weeks. Thereafter, their behavioral performance was evaluated using Morris water maze (MWM) and passive avoidance (PA) tasks. Notably, scopolamine was injected (into groups II-V at a dose of 2 mg/kg, i.p.) before conducting the tasks. Finally, the oxidative stress indicators in the brain were measured.
Results: EA reduced the escape latencies and distances during the learning phase of MWM. The results of probe trials also indicated that EA improved memory retrieval and helped animals recall the platform. Moreover, EA increased delay and light time, while decreasing the frequency of entries to the dark area of PA. In the EA-treated groups, the level of malondialdehyde was decreased, while the levels of total thiol groups, superoxide dismutase, and catalase were increased.
Conclusion: EA prevented the negative effects of scopolamine on learning and memory which is probably mediated via modulating oxidative stress. Hence, EA could be considered as a potential alternative therapy for dementia.
期刊介绍:
Central Nervous System Agents in Medicinal Chemistry aims to cover all the latest and outstanding developments in medicinal chemistry and rational drug design for the discovery of new central nervous system agents. Containing a series of timely in-depth reviews written by leaders in the field covering a range of current topics, Central Nervous System Agents in Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments in the field.