animals Article Bovine Intelectin 2 Expression as a Biomarker of Paratuberculosis Disease Progression Cristina Blanco Vázquez 1 , Ana Balseiro 2,3 , Marta Alonso-Hearn 4, Ramón A. Juste 4 , Natalia Iglesias 1, Maria Canive 4 and Rosa Casais 1,* 1 Center for Animal Biotechnology, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), 33394 Deva, Spain;
[email protected] (C.B.V.);
[email protected] (N.I.) 2 Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071 León, Spain;
[email protected] 3 Departamento de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-Universidad de León), Finca Marzanas, Grulleros, 24346 León, Spain 4 Department of Animal Health, NEIKER-Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Bizkaia, P812, E-48160 Derio, Spain;
[email protected] (M.A.-H.);
[email protected] (R.A.J.);
[email protected] (M.C.) * Correspondence:
[email protected] Simple Summary: The potential of the bovine intelectin 2 as a biomarker of Mycobacterium avium subsp. paratuberculosis infection was investigated using quantitative immunohistochemical analysis of ileocecal valve samples of animals with increasing degrees of lesion severity (focal, multifocal and diffuse histological lesions) and control animals without detected lesions. Significant differences were observed in the mean number of intelectin 2 immunolabelled cells between the three histopathological types and the control. Specifically, the mean number of intelectin 2 labelled cells was indicative Citation: Blanco Vázquez, C.; of disease progression as the focal group had the highest number of intelectin 2 secreting cells Balseiro, A.; Alonso-Hearn, M.; Juste, followed by the multifocal, diffuse and control groups indicating that intelectin 2 is a good biomarker R.A.; Iglesias, N.; Canive, M.; Casais, for the different stages of Mycobacterium avium subsp.