title: Detection of Babesia caballi infection by enzyme-linked immunosorbent assay using recombinant 48-kDa merozoite rhoptry protein.
abstract: The 48-kDa Babesia caballi merozoite rhoptry protein was expressed using a pGEX4T expression vector in Escherichia coli as glutathione S-transferase fusion protein (GST-BC48), and the expressed GST-BC48 was used in an ELISA to detect specific antibodies in serum samples. No cross-reaction was observed with sera from horses experimentally infected with Babesia equi. GST-BC48 ELISA was a highly sensitive and specific test when compared with the CFT. A total of 209 horse sera obtained from Central Mongolia were examined with the GST-BC48 ELISA and 46.4% (97/209) were found to be seropositive for B. caballi, suggesting that the GST-BC48 ELISA can be successfully used for both quarantine and epidemiological studies.
authors.affiliation: The Research Centre for Protozoan Molecular Immunology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ikadai
authors.forename: C R
authors.initials: CR
authors.lastname: Osorio
authors.forename: X
authors.initials: X
authors.lastname: Xuan
authors.forename: I
authors.initials: I
authors.lastname: Igarashi
authors.forename: T
authors.initials: T
authors.lastname: Kanemaru
authors.forename: H
authors.initials: H
authors.lastname: Nagasawa
authors.forename: K
authors.initials: K
authors.lastname: Fujisaki
authors.forename: N
authors.initials: N
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Mikami
mesh_terms: D000818:Animals; D000953:Antigens, Protozoan / Q000276:immunology*; D001403:Babesia / Q000302:isolation & purification*; D001404:Babesiosis / Q000175:diagnosis*; D003429:Cross Reactions; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary*; D006734:Horse Diseases / Q000469:parasitology*; D006736:Horses; D008970:Molecular Weight; D015800:Protozoan Proteins / Q000276:immunology*; D011994:Recombinant Proteins / Q000276:immunology
chemical_list: D000953:Antigens, Protozoan; D015800:Protozoan Proteins; D011994:Recombinant Proteins; C097551:rhoptry-associated protein-1, Babesia