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Effect of pineapple peel extract on total phospholipids and lipid peroxidation in brain tissues of rats

Asian Pacific Journal of Tropical Medicine 2011年第3期4卷 182-184页

作者： Erukainure OL Ajiboye JA Adejobi RO Okafor OY Kosoko SB owolabi fo food Technology Division Federal Institute of Industrial ResearchOshodiNigeria College of Natural and Applied Sciences Bells University of TechnologyOtaNigeria

Objective:To investigate the ability of the methanolic extract of pineapple peel to attenuate alcohol-induced changes in total phospholipids and lipid peroxidation in brain tissues. Methods:Oxidative stress was induced by oral administration of ethanol(20%w/v) at a dosage of 5 mL/kg bw in *** 28 days of treatment,the rats were fasted overnight and sacrificed by cervical *** tissues were assayed for total phospholipid(TP) content and malondialdehyde(MDA).Results:Administration of alcohol significantly caused a reduction in TP *** with pineapple peel extract significantly increased the TP content. Significant high levels of MDA was observed in alcohol-fed rats,treatment with pineapple peel extract significantly reduced the MDA ***:Results obtained from this study indicates that pineapple peel extract protects against alcohol-induced changes in total phospholipids and lipid peroxidation in brain tissues.

关键词： Brain Malondialdehyde Total phospholipids Alcohol

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Modulatory effect of pineapple peel extract on lipid peroxidation,catalase activity and hepatic biomarker levels in blood plasma of alcoholinduced oxidative stressed rats

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Asian Pacific Journal of Tropical Biomedicine 2011年第1期1卷 12-14页

作者： Okafor OY Erukainure OL Ajiboye JA Adejobi RO owolabi fo Kosoko SB food Technology Division Federal Institute of Industrial Research College of Natural and Applied Sciences Bells University of Technology

Objective:To investigate the ability of the methanolic extract of pineapple peel to modulate alcohol-induced lipid peroxidation,changes in catalase activities and hepatic biochemical marker levels in blood ***:Oxidative stress was induced by oral administration of ethanol(20%w/v) at a dosage of 5 niL/kg bw in *** 28 days of treatment,the rats were fasted overnight and sacrificed by cervical *** was collected with a 2 mL syringe by cardiac puncture and was centrifuged at 3000 rpm for 10 *** plasma was analyzed to evaluate malondialdehyde(MDA),catalase activity,aspartate aminotransferase(AST),alkaline phosphatase(ALP) and alanine aminotransferase(ALT) ***:Administration of alcohol caused a drastic increase(87.74%) in MDA level compared with the *** peel extract significantly reduced the MDA level by 60.16%at 2.S mL/kg *** fed alcohol only had the highest catalase activity,treatment with pineapple peel extract at 2.5 mL/kg bw however, reduced the *** AST,ALP and ALT activities were observed in rats fed alcohol only respectively,treatment with pineapple peel extract drastically reduced their activities. Conclusions:The positive modulation of lipid peroxidation,catalase activities as well as hepatic biomarker levels of blood plasma by the methanolic extract of pineapple peels under alcoholinduced oxidative stress is an indication of its protective ability in the management of alcoholinduced toxicity.

关键词： Blood plasma Catalase Lipid peroxide Aspartate aminotransferase Alkaline phosphatase Alanine aminotransferase Hepatic biomarker Pineapple peel extract Oxidative stress Lipid peroxidation

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