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Saudi J Biol Sci. 2011 Oct;18(4):403-9. doi: 10.1016/j.sjbs.2011.07.001. Epub 2011 Aug 3.

Dietary effect of Pleurotus eryngii on biochemical function and histology in hypercholesterolemic rats.

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1
Division of Life Sciences, University of Incheon, Incheon 406-840, Republic of Korea.

Abstract

This work was conducted to investigate diet supplement of king oyster mushroom fruiting bodies on biochemical and histological changes in hypercholesterolemic rats. Six-week old female Sprague-Dawley albino rats were divided into three groups of 10 rats each. The feeding of 5% powder of the fruiting bodies of Pleurotus eryngii to hypercholesterolemic rats reduced their plasma total cholesterol, triglyceride, low-density lipoprotein, total lipid, phospholipids, and LDL/HDL ratio by 24.05%, 46.33%, 62.50%, 24.63%, 19.22%, and 57.14%, respectively. Mushroom also significantly reduced body weight in hypercholesterolemic rats. However, it had no adverse effects on plasma albumin, total bilirubin, direct bilirubin, creatinine, blood urea nitrogen, uric acid, glucose, total protein, calcium, sodium, potassium, chloride, inorganic phosphate, magnesium, and enzyme profiles. Feeding mushroom increased total lipid and cholesterol excretion in feces. The plasma lipoprotein fraction, separated by agarose gel electrophoresis, indicated that P. eryngii significantly reduced plasma β and pre-β-lipoprotein, while increased α-lipoprotein. A histological study of hepatic cells by conventional hematoxylin-eosin and oil red O staining showed normal findings for mushroom-fed hypercholesterolemic rat. The present study suggests that 5% P. eryngii diet supplement provided health benefits by acting on the atherogenic lipid profile in hypercholesterolaemic rats. Therefore, king oyster mushroom could be recommended as a natural cholesterol lowering substance within the human diet.

KEYWORDS:

Agarose gel electrophoresis; Atherogenic lipid profile; Histology; Hypercholesterolemic rats; Pleurotus eryngii

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