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Abstract Title:

Protective effect of raisin (currant) against spatial memory impairment and oxidative stress in Alzheimer disease model.

Abstract Source:

Nutr Neurosci. 2017 Aug 16:1-9. Epub 2017 Aug 16. PMID: 28812474

Abstract Author(s):

Mohammad Gol, Davoud Ghorbanian, Nabiollah Soltanpour, Jamshid Faraji, Mohsen Pourghasem

Article Affiliation:

Mohammad Gol

Abstract:

OBJECTIVES: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive pathological changes of the brain. A number of studies demonstrated compelling evidence of the importance of oxidative processes in AD pathogenesis. Raisin contains polyphenol, phenolic acid, and tannin compounds, which have antioxidant and anti-inflammatory properties. The present study was aimed to evaluate the protective effect of raisin on neurobehavioral and histological changes in rats with Alzheimer.

METHODS: Animal model of AD was induced by intraperitoneal injection of aluminium chloride for 60 days (100 mg/kg body weight). During these 60 days both Alzheimer's and control rats were given 6 g of raisin per rat. At the end of the treatment, blood was collected for biochemical assessment. We used a Morris water task and passive avoidance test to assess spatial memory.

RESULTS: Our results showed that aluminium exposure significantly decreased the memory in the MWT and passive avoidance test, but in the raisin + AlClgroup, it significantly increased spatial memory in both tests. Also, Aluminium exposure significantly increased malondialdehyde (MDA) and decreased ferric reducing ability of plasma (ferric reducing/antioxidant power (FRAP)), while treatment with raisin significantly decreased MDA and increased FRAP in plasma of blood.

DISCUSSION: Our findings showed that raisin has a neuroprotective effect and improves the spatial memory in AD animal models.

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