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Bras. Parasitol. Vet."],"abstract":"<jats:p>Abstract The diagnosis of canine visceral leishmaniasis (CVL) relies on parasitological, molecular methods and serological. However, there are difficulties in using these methods to monitor the disease, and there is a need for more efficient diagnostic alternatives for dogs with suspected visceral leishmaniasis, also using clinical aspects of the animals, which that can be useful for surveillance and control. This study aimed to evaluate the serological diagnostic potential of recombinant antigens in order to improve CVL diagnosis. Disease diagnosis, clinical evaluation, and collection of biological samples for laboratory analysis were performed on dogs from the Tirirical District in S\u00e3o Lu\u00eds, Maranh\u00e3o, Brazil. The animals were divided into four groups: clinically suspected dogs for visceral leishmaniasis (VL), subclinical dogs for VL, animals with infections, and healthy animals from an endemic area. Subsequently, the animals were tested for the soluble liver antigen (SLA) antigen and recombinant Leishmania infantum chagasi antigens rP2a, rP2b, rP0, rHSP70, rHSP83, rH2A, and rKMP-11 using ELISA. The results demonstrate that the recombinant antigens that presented the best sensitivity, specificity, and high or moderate accuracy according to the Receiver Operating Characteristic (ROC) curves were rP2a, rP2b, and rH2A. These results indicate that rP2a, rP2b, and rH2A proteins are candidates for improving the diagnosis of CVL.<\/jats:p>","DOI":"10.1590\/s1984-29612025045","type":"journal-article","created":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T15:03:41Z","timestamp":1760713421000},"source":"Crossref","is-referenced-by-count":0,"title":["Candidate antigens for serological testing (ELISA) and diagnosis of canine visceral leishmaniasis"],"prefix":"10.1590","volume":"34","author":[{"given":"Maria Gabriela Sampaio","family":"Lira","sequence":"first","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil; Instituto Federal de Educa\u00e7\u00e3o, Ci\u00eancia e Tecnologia do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ranielly Araujo","family":"Nogueira","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil; Faculdade Edufor,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Renata","family":"Mond\u00eago-Oliveira","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Maranh\u00e3o,  Brasil; Instituto Oswaldo Cruz,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Allana Freitas","family":"Barros","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Maranh\u00e3o,  Brasil; Universidade Estadual do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Higor da Silva","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Maranh\u00e3o,  Brasil; Universidade Federal de Minas Gerais,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carla Janaina Rebou\u00e7as Marques do","family":"Ros\u00e1rio","sequence":"additional","affiliation":[{"name":"Universidade Federal de Minas Gerais,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F\u00e1bio Henrique Evangelista de","family":"Andrade","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fl\u00e1via Raquel Fernandes do","family":"Nascimento","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David Soeiro","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Universidade Federal de Minas Gerais,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eduardo Martins de","family":"Sousa","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil; Universidade Ceuma,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana Lucia","family":"Abreu-Silva","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil; Universidade Estadual do Maranh\u00e3o,  Brasil; Universidade Estadual do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7073-8308","authenticated-orcid":false,"given":"Rafael Cardoso","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Universidade Federal do Maranh\u00e3o,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2025]]},"reference":[{"key":"ref1","first-page":"197","article-title":"Soropreval\u00eancia, aspectos cl\u00ednicos e bioqu\u00edmicos da infec\u00e7\u00e3o por Leishmania em c\u00e3es naturalmente infectados e fauna de flebotom\u00edneos em uma \u00e1rea end\u00eamica na Ilha de S\u00e3o Lu\u00eds, Maranh\u00e3o, Brasil","volume":"17","author":"Abreu-Silva 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