2026-07-23T17:11:51Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/87432025-05-07T09:09:25Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19609

00925njm 22002777a 4500 dc Infantes-Lorenzo, Jose Antonio author Whitehead, Claire E author Moreno-Iruela, Inmaculada author Bezos, Javier author Roy, Álvaro author Domínguez, Lucas author Dominguez-Rodriguez, Mercedes author Salguero, Francisco J author 2018 South American camelids are susceptible to tuberculosis, caused mainly by Mycobacterium bovis and M. microti. Despite the tuberculin skin test being the official test for tuberculosis, it has a very low sensitivity in these species (14-20%). Serological tests present the advantages of being rapid, easy to perform and facilitate analysis of large numbers of samples in a short period of time. Novel antigen discovery and evaluation would provide enhanced detection of specific antibodies against members of M. tuberculosis complex. Here, we describe the development and evaluation of an ELISA-type immunoassays to use in the diagnosis of tuberculosis in llamas and alpacas based on P22, a multiprotein complex obtained by affinity chromatography from bovine Purified Protein Derivative (bPPD), that showed high sensitivity and specificity in mice, cattle and goats. This work was performed in two stages. First, a preliminary panel of samples collected from tuberculosis-free (n = 396) and M. bovis-infected herds (n = 56) was assayed, obtaining high specificity (100%) and sensitivity ranging from 63 to 96%. Subsequently, the use of the serological assay was tested using samples from two herds suffering from clinical M. bovis (n = 88) and M. microti (n = 25) infection to evaluate the ability of the ELISA to detect infected animals. 11 out of 88 alpacas were positive to the ELISA in a M. bovis outbreak and 7 out of 25 in a M. microti outbreak. The P22 ELISA potentially provides a sensitive and specific platform for improved tuberculosis surveillance in camelids. Front Vet Sci. 2018 Aug 13;5:189. 10.3389/fvets.2018.00189 2297-1769 Frontiers in veterinary science 30151368 http://hdl.handle.net/20.500.12105/8743 ELISA P22 South American camelids Diagnosis Tuberculosis Development and Evaluation of a Serological Assay for the Diagnosis of Tuberculosis in Alpacas and Llamas