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《Acta Academiae Medicinae Militaris Tertiae》 2009-15
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Extraintestinal lesions caused by rotavirus:An experimental study on suckling mice

CHEN Jun-hua,XIE Yuan-yuan,ZHU Chao-min,LIU Zuo-yi(Department of Infectious Disease,Children's Hospital,Chongqing Medical University,Chongqing 400014,China)  
Objective To study the extraintestinal lesions induced by rotavirus(RV)infection and explore the pathogenesis.Methods Simian rotavirus SA11 was cultured in MA-104 cells.After inoculation,the pathological changes in brain,lung,heart,liver,pancreas and kidney tissues were observed,the RV antigens detected,and the apoptotic cells observed.Besides,we stained the filamentous actin(F-actin)with Phalloidine-TRITC,and then quantified the F-actin amount.Results Several pathological changes,inclusive of myocardial interstitial edema,granular degeneration in cardiacytes,hepatic congestion,and hepatocellular vacuolar degeneration,were found,but not found in the brain,lung,and pancreas tissues.Meanwhile,several ultrastructural changes,inclusive of dissolved myocardial F-actin,extended smooth endoplasmic reticulum,swollen mitochondria,and widened perinuclear space,were found.No difference was found in the quantity of myocardial F-actin.Apoptosis was found in liver cells,but not in myocardial cells.RV RNA was detected in tissues such as brain,lung,heart,liver and pancreas tissues.Conclusion All the results suggest that RV may spread from the intestine to various extraintestinal organs and hence induce injury.Filamentous actin depolymerization,cytoskeleton damage and apoptosis induced by RV infection are the important mechanism not only in intestinal damages,but also in extraintestinal lesions.
【CateGory Index】: R725.1
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