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Therefore, the control of canine infections is required to reduce the incidence of human cases. Disease outcome in dogs depends on the fine balance between parasite virulence and efficacy of the immune system. Thus, knowledge of early response could yield relevant information for diagnosis and follow-up. In our study, 20 Beagle dogs were intravenously infected with 10<jats:sup>8<\/jats:sup> amastigotes of a fresh isolate of <jats:italic>L. infantum<\/jats:italic> and monitored along 16 weeks post inoculation. Specific antibody response and clinical evolution of infected animals were highly variable. Immunofluorescence antibody test (IFAT) and enzyme linked immunosorbent assay (ELISA) were useful to assess infection status, although only ELISA with promastigote-coated plates and, particularly, western blotting (WB) allowed an early diagnosis. Prominent antigens were identified by mass peptide fingerprinting. Chaperonin HSP60, 32 and 30 KDa antigens were recognized by all dogs on week 10 post infection. This suggests that these antigens may be valuable for early diagnosis. Advanced infection showed, in addition, reactivity to HSP83 and HSP70. Disease outcome did not show a clear relationship with ELISA or IFAT titers. Correlation between the clinical status and the combined reactivity to some antigens sustains their use for diagnosis and follow-up.<\/jats:p>","DOI":"10.1038\/s41598-019-55087-w","type":"journal-article","created":{"date-parts":[[2019,12,9]],"date-time":"2019-12-09T11:03:02Z","timestamp":1575889382000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Early antibody response and clinical outcome in experimental canine leishmaniasis"],"prefix":"10.1038","volume":"9","author":[{"given":"Ana Isabel","family":"Ol\u00edas-Molero","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mar\u00eda J.","family":"Corral","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mar\u00eda Dolores","family":"Jim\u00e9nez-Ant\u00f3n","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 M\u00aa","family":"Alunda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2019,12,9]]},"reference":[{"key":"55087_CR1","doi-asserted-by":"publisher","first-page":"873","DOI":"10.1038\/nrmicro1748","volume":"5","author":"F Chappuis","year":"2007","unstructured":"Chappuis, F. et al. 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