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Silymarin ameliorates memory deficits and neuropathological changes in mouse model of high-fat-diet-induced experimental dementia.


PMID 24866499

Abstract

A huge body evidences suggest that obesity is the single great risk factor for the development of dementia. Recently, silymarin, a flavonoid, clinically in use as a hepatoprotectant, has been reported to prevent amyloid beta-induced memory impairment by reducing oxidative stress and inflammation in mice brain. However, its potential in high-fat-diet (HFD)-induced dementia has not yet been investigated. Therefore, the present study is designed to explore the role of silymarin in HFD-induced experimental dementia in mice. Morris water maze test was employed to assess learning and memory. Various biochemical estimations including brain acetylcholinerstarse activity (AchE), thiobarbituric acid-reactive species (TBARS) level, reduced glutathione level (GSH), nirate/nitrite, and myeloperoxidase (MPO) activity were measured. Serum cholesterol level was also determined. HFD significantly impaired the cognitive abilities, along with increasing brain AchE, TBARS, MPO, nitrate/nitrite, and serum cholesterol levels. Marked reduction of brain GSH levels was observed. On the contrary, silymarin significantly reversed HFD-induced cognitive deficits and the biochemical changes. The present study indicates strong potential of silymarin in HFD-induced experimental dementia.

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