Studies on Antigenic and Physicochemical Properties of Equine Rotavirus
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概要
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Antigenic relationships among equine and other animal rotaviruses and human rotavirus, and physicochemical properties of equine rotavirus were examined. In the cross complement fixation test, the BI and HI-23 strains of equine rotavirus cross-reacted markedly with the Lincoln strain of calf rotavirus, the S-80 strain of porcine rotavirus, the SA-11 strain of simian rotavirus, and the Wa strain of human rotavirus. It was not possible to distinguish one strain of equine rotavirus from the other by the complement fixation test. In the cross neutralization test, the two strains of equine rotavirus cross-reacted distinctly with the SA-11 strain of simian rotavirus, although their titer to homologous virus was 4 to 64 times as high as that to heterogous virus. On the other hand, the two strains of equine rotavirus did not cross-react with the Lincoln strain of calf rotavirus, the S-80 strain of porcine rotavirus or the Wa strain of human rotavirus. Replication of the BI strain of equine rotavirus was not inhibited by 5-iodo-2′-deoxyuridine, indicating that the virus was RNA virus. The infectivity of this strain was resistant to chloroform, ether and sodium deoxycholate, and stable at pH 3. It was relatively heat-stable and sensitivity to 1mol/l MgCl2 at 50°C. From these results, it was revealed that the BI and HI-23 strains of equine rotavirus belonged serologically to the genus Rotavirus and were closely allied to the SA-11 strain of simian rotavirus as serotype. Moreover, it was confirmed that the BI strain possessed the same physicochemical properties as the genus Rotavirus.
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日本ウマ科学会 | 論文
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