Determination of erythrocyte susceptibility of Chinese sheep (Tan mutton breed) and French sheep (Vendeen breed) to Babesia sp BQ1 (Lintan) by in vitro culture
文献类型： 外文期刊
第一作者： Guan, Guiquan
作者： Guan, Guiquan;Moreau, Emmanuelle;Brisseau, Nadine;Chauvin, Alain;Guan, Guiquan;Luo, Jianxun;Yin, Hong
作者机构：
关键词： erythrocyte susceptibility
期刊名称：VETERINARY PARASITOLOGY （ 影响因子：2.738； 五年影响因子：2.951 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： The Babesia species "BQ1 (Lintan)" is infective to sheep and goats. The species was isolated from Haemaphysalis qinghaiensis collected in the Gannan Tibet Autonomous Region, China in April 2000. In this study, an in vitro culture system was developed for the propagation of Babesia sp. BQ1 (Lintan). Continuous cultivation and 5.0% parasitemia was obtained in vitro in RPMI 1640 medium with sheep red blood cells (RBC) (7.5%) supplemented with Fetal Bovine Serum (FBS) (20%), Amphotericin B (0.5 mu g/ml) and Gentamicin (50 mu g/ml) in an incubator at 37 C and 6% CO2 in 24-well and 6-well plates. Parasitemia could attain 10% in 75 cm(2) flasks with the same culture medium but with 2.5% RBC. A clonal line of Babesia sp. BQ1 (Lintan) was screened using the limiting dilution method and designated G7. Growth of Babesia sp. BQ1 (Lintan) in vitro was measured by microtitre-based spectrophotometric method and from parasitemia counts. The generation time was between 20.57 h (based the A(405) of the culture supernatant) and 26.41 h (based on parasitemia). Three French sheep were successfully infected with the culture and the infectivity of the clonal line G7 was determined. Finally, this in vitro culture system was used to compare the susceptibility (capacity to sustain Babesia sp. growth in vitro) of RBC from French sheep (Vendeen breed) and Chinese sheep (Tan mutton breed) for Babesia sp. BQ1 (Lintan) and B. divergens. The lower susceptibility to B. divergens and Babesia sp. BQ1 (Lintan) of RBC from French sheep, compared to Chinese sheep, is discussed. (C) 2010 Elsevier B.V. All rights reserved.
分类号： S85
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