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A PCR Based Survey of Babesia ovata in Cattle from Various Asian, African and South American Countries OAK
SIVAKUMAR, Thillaiampalam; ASADA, Masahito; BATTSETSEG, Badgar; HUANG, Xiaohong; LAN, Dinh Thi Bich; INPANKAEW, Tawin; P. YBAÑEZ, Adrian; ALHASSAN, Andy; THEKISOE, Oriel M. M.; DE MACEDO, Alan Caine Costa; INOKUMA, Hisashi; IGARASHI, Ikuo; YOKOYAMA, Naoaki; 猪熊, 壽; 五十嵐, 郁男; 横山, 直明.
Babesia ovata is a tick-transmitted hemoprotozoan parasite that infects cattle. In our study, bovine blood samples (n=2,034) were collected from 10 different countries (Brazil, China, Ghana, Japan, Mongolia, the Philippines, South Africa, Sri Lanka, Thailand and Vietnam) and DNA extracted. The DNA samples were screened using an established and specific polymerase chain reaction (PCR) assay targeting the Apical membrane antigen 1 (AMA-1) gene. Parasite DNA was detected among samples collected from Japan, Mongolia and Thailand. Sequence analyses confirmed that the PCR assay detected only B. ovata AMA-1, and that amplicons from different geographical locations were conserved. Our findings highlight the importance of designing adequate strategies to control B....
Palavras-chave: AMA-1; Babesia ovata; Cattle; Mongolia; Thailand.
Ano: 2013 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4016
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Babesia gibsoni: An apical membrane antigen-1 homologue and its antibody response in the infected dogs OAK
Zhou, Jinlin; Yang, Jun; Zhang, Guohong; Nishikawa, Yoshifumi; Fujisaki, Kozo; Xuan, Xuenan.
A cDNA encoding the apical membrane antigen-1 (AMA-1) homologue was obtained by immunoscreening a cDNA expression library prepared from Babesia gibsoni merozoite mRNA. The complete nucleotide sequence of the gene was 2062 bp. Computer analysis suggested that the sequence contains an open reading frame of 1794 bp with a coding capacity of approximately 66 kDa. Based on the homology analysis, this putative protein was designated as B. gibsoni AMA-1 (BgAMA-1). The BgAMA-1 gene was expressed in the Escherichia coli BL21 strain and used as the antigen in Western blotting and the enzyme-linked immunosorbent assay (ELISA). The results indicated that BgAMA-1 was recognized as an immunodominant antigen by the host immune system and that it induced a strong antibody...
Palavras-chave: Babesia gibsoni; AMA-1; Antibody response.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/815
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