Direct agglutination test for the detection of antibodies to Sarcocystis neurona in experimentally infected animals.
Equine protozoal myeloencephalitis (EPM) is a serious neurological disease of horses in the Americas. The apicomplexan protozoan most commonly associated with EPM is Sarcocystis neurona. A direct agglutination test (SAT) was developed to detect antibodies to S. neurona in experimentally infected animals. Merozoites of the SN6 strain of S. neurona collected from cell culture were used as antigen and 2-mercaptoethanol was added to the antigen suspension to destroy IgM antibodies when mixed with test sera. Mice fed sporocysts of S. speeri or S. falcatula-like sporocysts from opossums did not seroconvert in the SAT. The sensitivity of the SAT was 100% and the specificity was 90% in mice.
Lindsay
D S
DS
Department of Biomedical Sciences and Pathobiology, Center for Molecular Medicine and Infectious Diseases, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg 24061-0342, USA. lindsayd@vt.edu
Dubey
J P
JP
D000372:Agglutination Tests / Q000662:veterinary*; D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis*; D002478:Cells, Cultured; D004195:Disease Models, Animal; D004679:Encephalomyelitis / Q000469:parasitology / Q000662:veterinary*; D006734:Horse Diseases / Q000175:diagnosis*; D006736:Horses; D051379:Mice; D011817:Rabbits; D012522:Sarcocystis / Q000276:immunology / Q000302:isolation & purification*; D012523:Sarcocystosis / Q000276:immunology / Q000469:parasitology / Q000662:veterinary*; D012680:Sensitivity and Specificity
D000913:Antibodies, Protozoan