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Seroprevalence and molecular evidence for the presence of bovine immunodeficiency virus in Brazilian cattle

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Title: Seroprevalence and molecular evidence for the presence of bovine immunodeficiency virus in Brazilian cattle
Authors: MEAS, Sothy Browse this author
RUAS, Farias Jeronimo Browse this author
USUI, Tatsufumi Browse this author
TERAOKA, Yoshiyuki Browse this author
MULENGA, Albert Browse this author
CHANG, Kyung-Soo Browse this author
MASUDA, Aoi Browse this author
MADRUGA, Claudo Roberto Browse this author
OHASHI, Kazuhiko Browse this author
ONUMA, Misao Browse this author
Keywords: bovine immunodeficiency virus
bovine leukemia virus
Issue Date: 31-May-2002
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 50
Issue: 1
Start Page: 9
End Page: 16
Abstract: Data on the worldwide distribution of bovine immunodeficiency virus (BIV) and bovine leukemia virus (BLV) is limited. A prevalence study of antibodies to BIV and BLV was conducted in six different cattle herds in Brazil. Out of a total of 238 sera analyzed, 11.7% were found positive for anti-BIV p26 antibodies as determined by Western blot analysis, 2.1% were positive for anti-BLV gp51 antibodies as detected by immunodiffusion test. Peripheral blood mononuclear cells from BIV seropositive cattle were found to have BIV-provirus DNA, as detected by nested polymerase chain reaction. A nucleotide sequence corresponding to a 298 bp fragment of the BIV pol gene was also analyzed. Amino acid sequences of these Brazilian pol gene products showed 98.0 to 100% homology to the American strain BIV R29, 97.0 to 99.0% to Japanese BIV isolates, and divergence ranged from 0 to 4.0% among Brazilian BIV isolates. This evidence of the presence of BIV and BLV infections in Brazil should be considered a health risk to Brazilian cattle populations and a potential causative agent of chronic disease in cattle.
Type: bulletin (article)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 50, Number 1

Submitter: 獣医学部図書室

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