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Development and application of a multiplex TaqMan® real-time qPCR assay for the simultaneous detection of anaplasma marginale and theileria annulata and molecular characterization of anaplasma marginale from cattle in Western Cuba."/>
Umeå University, Faculty of Medicine, Department of Epidemiology and Global Health.ORCID iD: 0000-0002-0253-5928
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2020 (English)In: Ticks and Tick-borne Diseases, ISSN 1877-959X, E-ISSN 1877-9603, Vol. 11, no 2, article id 101356Article in journal (Refereed) Published
Abstract [en]

Anaplasmosis and theileriosis are considered the most important tick-borne diseases for livestock production worldwide, causing significant economic losses in tropical and subtropical regions. The present study was aimed to develop a multiplex TaqMan® qPCR assay to simultaneously detect Anaplasma marginale and Theileria annulata and to applied it to investigate naturally infected cattle in Cuba. The assay was highly specific, sensible, and efficient; it was more sensitive than a well-established nested PCR and detected 1 DNA copy of each target. Consistent repeatability and reproducibility within and between multiplex qPCR runs was shown. A total of 223 blood samples collected in western Cuba were analyzed for haemoparasites infection in cattle. The multiplex qPCR assay detected A. marginale in 213 samples (95.5%; CI: 95%; 91.9%–97.5%), but all samples were negative for T. annulata. Additionally, the genetic diversity of A. marginale was assessed using 16S rRNA, MSP1a and MSP4 nucleotide and protein sequences. The MSP1a tandem repeats ranged from three to five, and twelve different MSP1a tandem repeats of A. marginale were found, which presented genotypes C, E, and G in the 5ʹUTR microsatellite region. Phylogenetic analysis using the msp4 gene showed that Cuban strains were closely related to others previously reported in Mexico, Brazil and Asian countries. The multiplex qPCR described here proved to be a rapid, specific and cost-effective mean for the simultaneous detection of A. marginale and T. annulata. Further epidemiological studies using this assay will improve the surveillance of the associated diseases in regions where they are endemic.

Place, publisher, year, edition, pages
2020. Vol. 11, no 2, article id 101356
Keywords [en]
Multiplex TaqMan®qPCR, Cattle, MSP1a, MSP4
National Category
Veterinary Science
Identifiers
URN: urn:nbn:se:umu:diva-166600DOI: 10.1016/j.ttbdis.2019.101356ISI: 000509982500028PubMedID: 31870635OAI: oai:DiVA.org:umu-166600DiVA, id: diva2:1380172
Available from: 2019-12-18 Created: 2019-12-18 Last updated: 2020-02-21Bibliographically approved

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Fonseca Rodriguez, Osvaldo

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