Loop-mediated isothermal amplification (LAMP) assays for the detection of Theileria annulata infection in China targeting the 18S rRNA and ITS sequences

文献类型： 外文期刊

第一作者： Liu, Aihong

作者： Liu, Aihong;Guan, Guiquan;Du, Pengfei;Liu, Zhijie;Gou, Huitian;Liu, Junlong;Yang, Jifei;Li, Youquan;Ma, Milin;Niu, Qinli;Ren, Qiaoyun;Bai, Qi;Yin, Hong;Luo, Jianxun

作者机构：

期刊名称：EXPERIMENTAL PARASITOLOGY （ 影响因子：2.011； 五年影响因子：2.132 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： We have developed two loop-mediated isothermal amplification (LAMP) assays for the detection of Theileria annulata, an economically important cattle disease in China that occurs in subtropical and tropical areas. These assays target the ribosomal RNA (18S rRNA) and ITS LAMP sequences. The primer set for each gene target consists of four primers, and each set recognizes six distinct regions on the target gene to allow for the highly specific detection of T. annulata. The specific ladder bands were amplified from the autologous genomic DNA of four Chinese-laboratory-preserved standard T. annulata stocks, and there were no cross-reactions with the genomic DNA of normal bovine blood and other protozoan species. The LAMP assays were sufficiently sensitive to detect 0.1 pg/mu l of genomic DNA. Furthermore, DNA extracted from blood collected from cattle experimentally infected with T. annulata (18-105 days post-infection) was amplified, demonstrating the high sensitivity of these primers. Of the 351 field samples collected from China, 24.5% were positively detected by two LAMP primers, and 18.2% were found to be positive for T. annulata infection by PCR. These results indicate that the LAMP assay could be a potential diagnostic tool for epidemiological studies of T. annulata infection in China. (C) 2012 Published by Elsevier Inc.

分类号： Q958.9

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