Rapid detection and differentiation of Theileria annulata, T. orientalis and T. sinensis using high-resolution melting analysis

Publication date: Available online 16 October 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Jinming Wang, Jifei Yang, Shandian Gao, Aihong Liu, Muhammad Rashid, Youquan Li, Zhijie Liu, Junlong Liu, Guangyuan Liu, Jianxun Luo, Guiquan Guan, Hong YinAbstractBovine theileriosis, caused by protozoan parasites of the genus Theileria, presents with various clinical symptoms. In cattle, clinical presentations and outcomes of bovine theileriosis are closely correlated with the causative Theileria spp. Thus, accurate detection and discrimination of Theileria spp. are essential for epidemiological studies and for provision of clinical management strategies. High-resolution melting (HRM) analyses of two amplicons targeting the 18S rRNA indicated that T. annulata, T. orientalis, and T. sinensis isolated from China can be accurately detected and discriminated with the lowest detection limit of 1–10 copy numbers of plasmid bearing the 18S rRNA sequence. The approach was verified with DNA samples from experimentally infected cattle and field samples. Thus, this assay is useful for diagnosis of bovine theileriosis in field samples and experimentally infected animals, and could also be applicable for the survey of parasite dynamics, epidemiological studies.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research