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KMID : 0359319920320040641
Korean Journal of Veterinary Research
1992 Volume.32 No. 4 p.641 ~ p.647
Serodiagnosis of canine toxoplasmosis by latex agglutination and indirect fluorescent antibody test



Abstract
This study was conducted to determine the serum antibodies against toxoplasma in the artificially infected dogs, pet and street dogs by latex agglutination (LA) and indirect fluorescent antibody (IFA) test. LA test was carried out with commercial Toxo-MT kit (Eiken chemical Co.) and IFA test was carried out with rabbit-anti-dog IgG labelled with FITC (Cappel Co.) and toxo-antigen slides prepared in laboratory.
The results obtained were as follows :
1. Antibodies to Toxoplasma gondii in the artificially infected dogs were detected firstly at the Day 8 in IFA and Day 9 in I.A test after moculation. Positive antibody reactions by these tests were declined gradually afterward but maintained up to 12 weeks.
2. In LA test serum antibody titers in 310 test sera were shown as 10 cases(32%) in 1 : 32.5% (1.0%) in 1 : 64.4(1.3%) in 1 : 128 and (0.7%) in 1 : 256. In IFA test serum antibody Uters in 310 test sera were shown as 17 case(5.5%) in 1 : 64.8(2.6%) in 1 : 128 and 5(1.6%) in 1 : 256.
3. In the total of 310 sera from pet and street dogs toxoplasma antibody positive rates were 2L cases (6.8%) by LA and 30 cases (9.7%) by IFA test and the positive detection rates between these two groups by LA and IFA test were not significant(p<0.05).
4. In the total of 115 sera from pet dogs toxoplasma antibody positive rates were 12 cases(10.4%) by LA and 15(13.0%) by IFA test. And in the 195 street dogs the positive rates were 9 cases(4.6% ) by Lf1 and 15(7.7%) by IFA test. Also, the positive detection rates between these two groups by LA and IFA test were not significant(p<0.05).
5. Agreement of reactivity between LA and IFA test for 310 sera was 91.3% in total of 283 cases consisting of 12 cases(3.9%) of both LA and IFA positive and 271 cases(87.4%) of LA and IFA negative.
6. LA test was almostly equivalent to the IFA test in producibility and proved to be a simple tool for the screening of toxoplasma antibody in laboratory.
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학술진흥재단(KCI)