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  • Title: A PCR-RFLP Assay targeting RPS8 gene for the discrimination between bovine Babesia and Theileria species in China.
    Author: Tian Z, Du J, Yang J, Liu A, Liu X, Liu G, Yin H.
    Journal: Parasit Vectors; 2015 Sep 17; 8():475. PubMed ID: 26382041.
    Abstract:
    BACKGROUND: Bovine babesiosis and theileriosis is an important hemoprotozoal disease in cattles and yaks in tropical and subtropical regions leading to significant economic losses. In the field, the risk of co-infection between the bovine Babesia and Theileria species is very high. Thus, it is necessary to develop a simple, accurate, rapid and cost-effective method for large-scale epidemic investigation, in particular for the detection of co-infection in field. METHODS: In this study, DNA sequences of a ribosomal protein S8 (RPS8) gene from eight species of cattle piroplasms in China were used to develop a species-specific PCR-RFLP diagnostic tool. The eight Theileria and Babesia species could be differentiated by digesting the RPS8 PCR product with Mbo I. RESULTS: The sensitivity of the PCR assays was 0.1 pg DNA for Babesia species but 1 pg DNA for Theileria species. The clearly different size of the PCR-RFLP products allowed for a direct discrimination between eight bovine Theileria and Babesia species (T. annulata, T. sinensis, T. sergenti, B. ovata, B. bovis, B. bigemina, B. major and Babesia species Kashi isolate). CONCLUSION: Our results indicated that the established method based on the RPS8 gene was a reliable molecular diagnostic tool for the simultaneous detection and identification of bovine Babesia and Theileria species in China, which could be applicable for the survey of parasite dynamics, epidemiological studies as well as prevention and control of the disease.
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