Development and Validation of a Novel ELISA for the Specific Detection of Antibodies against Mycobacterium avium Subspecies paratuberculosis Based on a Chimeric Polyprotein

Autor: Roberto Damián Moyano, Magali Andrea Romero, María Alejandra Colombatti Olivieri, María Fiorella Alvarado Pinedo, Gabriel Eduardo Traveria, María Isabel Romano, María Natalia Alonso
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Veterinary Medicine International, Vol 2021 (2021)
Druh dokumentu: article
ISSN: 2042-0048
DOI: 10.1155/2021/7336848
Popis: Bovine paratuberculosis (PTB) is caused by Mycobacterium avium subsp. paratuberculosis (MAP). The optimization of detection tests specific for MAP is crucial to improve PTB control. In this work, we aimed to develop and validate a diagnostic tool based on an ELISA to specifically detect anti-MAP antibodies from bovine serum samples. For that purpose, we designed a recombinant polyprotein containing four specific antigens from MAP and optimized the ELISA. The validation consisted of the assessment of 10 sera from PTB-infected and healthy bovines with different OD values. The diagnostic performance of the polyprotein-ELISA was evaluated by testing 130 bovine serum samples (47 healthy, 48 MAP-infected, and 35 M. bovis-infected bovines). The ELISA using the polyprotein yielded an area under the ROC curve (AUC) of 0.9912 (95% CI, 0.9758–1.007; P
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