Bacteriology : High Genetic Diversity of Anaplasma marginale Detected from Philippine Cattle

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  • YBAÑEZ Adrian Patalinghug
    Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080–8555, Japan United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu 501–1193, Japan Visayas State University, Visca, Baybay City 6521-A, Leyte, Philippines
  • YBAÑEZ Rochelle Haidee D.
    Visayas State University, Visca, Baybay City 6521-A, Leyte, Philippines National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080–8555, Japan
  • CLAVERIA Florencia G.
    Biology Department, College of Science, De La Salle University-Manila, Taft Avenue, Manila 1000, Philippines
  • CRUZ-FLORES Mary Jane
    Biology Department, College of Science, De La Salle University-Manila, Taft Avenue, Manila 1000, Philippines
  • XUENAN Xuen
    National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080–8555, Japan
  • YOKOYAMA Naoaki
    United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu 501–1193, Japan National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080–8555, Japan
  • INOKUMA Hisashi
    Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080–8555, Japan United Graduate School of Veterinary Sciences, Gifu University, Gifu, Gifu 501–1193, Japan

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タイトル別名
  • High Genetic Diversity of <i>Anaplasma marginale</i> Detected from Philippine Cattle
  • High genetic diversity of Anaplasma marginale detected from Philippine cattle

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A total of 658 cattle in 6 provinces in the Philippines were screened for Anaplasma marginale infection by using a diagnostic heat-shock operon (groEL) gene-PCR assay. The screening-positive samples were further tested using the major surface antigen protein 1a (Msp1a) gene-PCR assay. Screening PCR results showed 130 cattle (19.8%) were positive for the A. marginale infection. Subsequent amplification using the Msp1a gene only showed 93 samples (14.1%) to be positive. In addition, 37 tandem-repeat structures, including 20 novel structures, and 41 distinct genotypes were identified. Interestingly, multiple infections of 4 different genotypes were also observed in A. marginale-infected cattle. The present study demonstrated the prevalence and characterization of diverse genotypes of A. marginale in the Philippine cattle.

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