{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T22:47:19Z","timestamp":1792709239993,"version":"4.5.0"},"reference-count":17,"publisher":"American Society for Microbiology","issue":"5","license":[{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Clin Vaccine Immunol"],"published-print":{"date-parts":[[2004,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            <jats:italic>Agrobacterium<\/jats:italic>\n            ,\n            <jats:italic>Sinorhizobium<\/jats:italic>\n            , and\n            <jats:italic>Ochrobactrum<\/jats:italic>\n            are genera closely related to\n            <jats:italic>Brucella<\/jats:italic>\n            but, in contrast to the latter, are not pathogenic for humans and animals. We studied by an indirect enzyme-linked immunosorbent assay (ELISA) the reactivities of brucellosis sera against cytosolic (CYT) and membrane (MA) antigens from these nonpathogenic bacteria, and we evaluated the potential usefulness of these cross-reactions for the diagnosis of brucellosis in humans, sheep, cows, and dogs. Canine infection by\n            <jats:italic>Brucella canis<\/jats:italic>\n            was detected with high specificity by CYT antigen-based ELISAs (96% for\n            <jats:italic>Agrobacterium<\/jats:italic>\n            , 96% for\n            <jats:italic>Sinorhizobium<\/jats:italic>\n            , and 91% for\n            <jats:italic>Ochrobactrum<\/jats:italic>\n            ), while sensitivity was variable (58% for\n            <jats:italic>Agrobacterium<\/jats:italic>\n            , 88% for\n            <jats:italic>Sinorhizobium<\/jats:italic>\n            , and 84% for\n            <jats:italic>Ochrobactrum<\/jats:italic>\n            ). In addition, it was possible to diagnose canine disease shortly after exposure to the pathogen (15 days). Similar results for canine brucellosis were obtained with MA antigens. In contrast, normal sera from humans, sheep, and cattle reacted strongly with all the antigens (CYT and MA antigens from the three bacteria), producing high cutoff values and, consequently, low sensitivities. While for some host species the reactivity patterns of normal sera by Western blotting were similar to those produced with sera from infected individuals, the reactivity pattern of bovine sera against\n            <jats:italic>Sinorhizobium meliloti<\/jats:italic>\n            antigens exhibited some differential bands for the two groups of sera. These results show that crude fractions from nonpathogenic alpha-proteobacteria can be used to diagnose canine brucellosis but may need to be further separated into simpler fractions to have diagnostic usefulness in ovine, bovine, or human infection. By reducing the biosafety requirements, the use of antigens derived from these nonpathogenic bacteria would simplify the production of diagnostic kits for brucellosis, especially in settings where biosafety level-3 facilities are scarce or absent.\n          <\/jats:p>","DOI":"10.1128\/cdli.11.5.868-873.2004","type":"journal-article","created":{"date-parts":[[2004,9,9]],"date-time":"2004-09-09T16:35:03Z","timestamp":1094747703000},"page":"868-873","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Occurrence and Potential Diagnostic Applications of Serological Cross-Reactivities between\n            <i>Brucella<\/i>\n            and Other Alpha-Proteobacteria"],"prefix":"10.1128","volume":"11","author":[{"given":"M. Victoria","family":"Delpino","sequence":"first","affiliation":[{"name":"Instituto de Estudios de la Inmunidad Humoral, Facultad de Farmacia y Bioqui\u0301mica, Universidad de Buenos Aires, Buenos Aires, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos A.","family":"Fossati","sequence":"additional","affiliation":[{"name":"Instituto de Estudios de la Inmunidad Humoral, Facultad de Farmacia y Bioqui\u0301mica, Universidad de Buenos Aires, Buenos Aires, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pablo C.","family":"Baldi","sequence":"additional","affiliation":[{"name":"Instituto de Estudios de la Inmunidad Humoral, Facultad de Farmacia y Bioqui\u0301mica, Universidad de Buenos Aires, Buenos Aires, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"crossref","first-page":"914","DOI":"10.1093\/clinids\/18.6.914","volume":"18","year":"1994","unstructured":"Alnor, D., N. 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