Occurrence of canine brucellosis in Korea and polymorphism of Brucella canis isolates by infrequent restriction site-PCR
2009
Bae, D.H., Kyungpook National University, Daegu, Republic of Korea | Lee, Y.J., Kyungpook National University, Daegu, Republic of Korea
In this study, occurrence of canine brucellosis was surveyed in kennels, indoor dogs and stray dogs in Korea, and infrequent restriction site-polymerase chain reaction (IRS-PCR) was applied to analyze DNA polymorphism of Brucella canis (B. canis) isolates. Among a total of 501 dogs tested, B. canis antibodies by both rapid screening agglutination with 2-mercaptoethanol (2-ME RSAT) and immunochromatographic assay were detected in only 14.1% of kennel dogs. There were no seropositive cases in indoor dogs and stray dogs. DNA polymorphism was observed in 16 B. canis isolates by the IRS-PCR. Sixteen isolates were tested with primers, PsalA, PsalC, PsalG and PsalT, and different primers produced different DNA patterns. In regard to the IRS-PCR pattern of 16 isolates, 9 (56.3%) belonged to the IRS-PCR type I. The remaining 7 were differentiated as type Ⅱ, Ⅲ and Ⅳ. An application of the primer PsalC provided discrimination between B. canis isolated in 2005 and others.
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