Infection of water buffalo in Rio de Janeiro Brazil with Anaplasma marginale strains also reported in cattle
Silva, Jenevaldo B. | Cabezas Cruz, Alejandro | Fonseca, Adivaldo H. | Barbosa, José D. | de La Fuente, Jose | Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University (UNESP) | Instituto de Investigación en Recursos Cinegéticos (IREC) | Institut National de la Santé et de la Recherche Médicale (INSERM) | Université Lille Nord de France (COMUE) | Federal University of Para - Universidade Federal do Pará - UFPA [Belém, Brazil] (UFPA) | Universidade Federal Rural do Rio de Janeiro (UFRRJ) | Department of Veterinary Pathobiology, Center for Veterinary Health Sciences ; Oklahoma State University [Stillwater] (OSU) | BBrazilian Federal Agency ; Evaluation of Graduate Education (CAPES) ; National Council of Technological and Scientific Development (CNPq) ; Ministere de l'Education Superieure et de la Recherche of France
Contribution: Molecular and phylogenetic analysis and drafting of the manuscript
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Показать больше [+] Меньше [-]Английский. Anaplasma marginale is the most prevalent pathogen of cattle in tropical and subtropical regions of the world and causes the disease bovine anaplasmosis. The importance of water buffalo in the world economy is increasing. In addition, while water buffalo may serve as a reservoir host for A. marginale, the susceptibility of this host for A. marginale cattle strains in Brazil has not been reported. The major surface protein 1 alpha (msp1 alpha) gene has been shown to be a stable genetic marker for identification of A. marginale strains. Herein, we analyzed blood samples from 200 water buffalo and identified the A. marginale strains in an endemic area of Rio de Janeiro, Brazil, where ticks were present and water buffalo and cattle co-mingled. Ticks that were feeding on the study buffalo were collected and identified. The prevalence of A. marginale in water buffalo in this study was low (10%). Sequence analysis of the msp1 alpha gene demonstrated the presence of 8 different A. marginale strains. Two A. marginale strains in the water buffalo, (alpha-beta-beta-beta-Gamma) and (alpha-beta-beta-Gamma), were similar to those reported in cattle from nearby regions. The results of this study suggested that water buffalo in this region are naturally infected with the same strains of A. marginale found in cattle.
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