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| Effects of Lycium barbarum polysaccharides on blood indexes andliver tissue morphology in rats with intrahepatic cholestasis |
| XIA Yong, CAI Delei, FU Jianyun, XU Caiju, SONG Yanhua, MENG Zhen, XIE Jiaying
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| Institute of Physical, Chemical and Toxicology, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, China |
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Abstract Objective To study the effects of Lycium barbarum polysaccharides ( LBP ) on blood indexes and liver tissue morphology in rats with intrahepatic cholestasis. Methods Sprague-Dawley rats were randomly divided into the control group, the model group, and LBP low, medium and high dose group. The rats in the model group and LBP dose groups were given 60 mg/kg alpha-naphthylisothiocyanate ( ANIT ) by gavage every three days of the experiment, and the rats in the control group were given salad oil instead of ANIT. From the third day, the rats in each dose group were given 40, 150 and 600 mg/kg LBP, and the rats in the model group were given distilled water. After four weeks, the blood and urine indexes were measured, and the morphological changes of liver tissue were observed. Results From the third day of the experiment, the activity of rats in the model group and LBP dose groups decreased, and the color of urine changed to dark yellow. There was no abnormality in the group. In the model group, the levels of serum total bilirubin, direct bilirubin, total bile acid ( TBA ), alkaline phosphatase ( ALP ), γ-glutamyltransferase(γ-GGT), cholesterol, alanine aminotransferase ( ALT ), aspartate aminotransferase ( AST ), white blood cell ( WBC ), percentage of granulocyte, urinary bilirubin, urinary bile acid, liver mass and liver to body ratio were higher than those in the control group, while red blood cell and percentage of lymphocyte were lower than those in the control group ( all P<0.05 ). Pathological changes of liver tissue were observed. The levels of serum TBA, ALP, γ-GGT, ALT, AST, WBC and liver to body ratio in LBP high dose group were lower than those in the model group ( all P<0.05 ). The infiltration of inflammatory cells, proliferation and expansion of bile duct, degeneration and necrosis of liver cells were alleviated. Conclusions LBP can improve the blood indexes and pathological changes of liver tissue in rats with intrahepatic cholestasis at the dosage of 600 mg/kg. Inhibition of inflammatory response and reduction of oxidative stress injury may be the mechanism for alleviating cholestatic liver injury.
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Received: 08 May 2021
Revised: 02 July 2021
Published: 30 September 2021
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