Cats are pivotal in the transmission of Toxoplasma gondii. To develop a sensitive and specific serodiagnostic method for feline toxoplasmosis, surface antigen 2 (SAG2) of T. gondii was expressed in Escherichia coli and its diagnostic potential evaluated in an enzyme-linked immunosorbent assay (ELISA). The ELISA with recombinant SAG2 (rSAG2) was able to differentiate very clearly between sera from cats experimentally infected with T. gondii and sera from normal cats. Serum samples collected from domestic cats in Japan were investigated by the ELISA, and the results were compared with those of a commercially available latex agglutination test (LAT) kit. Of the 192 samples screened, 42 (21.9%) were positive by ELISA. Among the 42 ELISA-positive samples, 39 were positive by LAT. There was a significant correlation between ELISA and LAT titers. All the 150 ELISA-negative samples were negative by LAT. These results indicate that the ELISA with rSAG2 expressed in E. coli should be a useful method for detection of T. gondii infection in cats.
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August 2002
RESEARCH NOTES|
August 01 2002
Development and Evaluation of an Enzyme-Linked Immunosorbent Assay with Recombinant SAG2 for Diagnosis of Toxoplasma gondii Infection in Cats
X. Huang;
X. Huang
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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X. Xuan;
X. Xuan
aTo whom correspondence should be addressed
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E. N. Kimbita;
E. N. Kimbita
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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B. Battur;
B. Battur
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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T. Miyazawa;
T. Miyazawa
cResearch Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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S. Fukumoto;
S. Fukumoto
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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M. Mishima;
M. Mishima
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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L. H. Makala;
L. H. Makala
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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H. Suzuki;
H. Suzuki
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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C. Sugimoto;
C. Sugimoto
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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H. Nagasawa;
H. Nagasawa
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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K. Fujisaki;
K. Fujisaki
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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T. Mikami;
T. Mikami
dCollege of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan. [email protected]
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I. Igarashi
I. Igarashi
bNational Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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J Parasitol (2002) 88 (4): 804–807.
Citation
X. Huang, X. Xuan, E. N. Kimbita, B. Battur, T. Miyazawa, S. Fukumoto, M. Mishima, L. H. Makala, H. Suzuki, C. Sugimoto, H. Nagasawa, K. Fujisaki, T. Mikami, I. Igarashi; Development and Evaluation of an Enzyme-Linked Immunosorbent Assay with Recombinant SAG2 for Diagnosis of Toxoplasma gondii Infection in Cats. J Parasitol 1 August 2002; 88 (4): 804–807. doi: https://doi.org/10.1645/0022-3395(2002)088[0804:DAEOAE]2.0.CO;2
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