An enzyme-linked immunosorbent assay (ELISA) for detection of antibodies against Toxocara vitulorum in water buffaloes

Veterinary Parasitology
Wilma A Starke-BuzettiM C Zocoller-Seno

Abstract

Toxocara vitulorum, a parasite of the small intestine of cattle and water buffaloes, is mainly acquired by calves via the colostrum/milk from infected cows. To understand the development of immune responses in calves, antibody levels to a soluble extract antigen (Ex) from T. vitulorum infective larvae were measured by an indirect ELISA with sera of 15 buffalo calves, which were sampled every 15 days for the first 180 days after birth and 9 buffalo cows during the perinatal period. From all serum samples examined during the first 180 days, antibody level was lowest and highest in calves at 1 day of age before and after suckling colostrum, respectively, suggesting that the origin of antibodies was the colostrum. Immediately after birth, antibody levels in suckled calves remained at high levels until day 15, began to decrease to lower levels between 15 and 30 days and remained relatively stable until 120 days. By comparing the immune responses of these animals with their parasitological status it was considered possible to determine if passively acquired or actively produced antibodies provided protection against the infection. High numbers of T. vitulorum eggs in the feces between 30 and 60 days indicated that passively acquired ...Continue Reading

References

Jan 1, 1992·Parasitology Research·P H AmerasingheS T Fernando
Aug 1, 1992·Veterinary Immunology and Immunopathology·O O Barriga, H M Omar
Nov 1, 1991·Veterinary Parasitology·H M Omar, O O Barriga
Nov 1, 1990·International Journal for Parasitology·J A Roberts
Mar 1, 1983·Veterinary Immunology and Immunopathology·S Lloyd

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Citations

Dec 18, 2004·Annals of the New York Academy of Sciences·Wilma A Starke-Buzetti, Fabiano P Ferreira
May 19, 2006·International Journal of Environmental Research and Public Health·Magayane Machibya, Makarius Mdemu
Apr 28, 2004·World Journal of Gastroenterology : WJG·Rong-Bo ZhangYu-Bao Cui

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