Piglet colibacillosis diagnosis based on multiplex polymerase chain reaction and immunohistochemistry of paraffin-embedded tissues
dc.contributor.author | Lorenzo, Cíntia de | pt_BR |
dc.contributor.author | Andrade, Caroline Pinto de | pt_BR |
dc.contributor.author | Machado, Verônica Silveira Luiz | pt_BR |
dc.contributor.author | Bianchi, Matheus Viezzer | pt_BR |
dc.contributor.author | Rolim, Veronica Machado | pt_BR |
dc.contributor.author | Cruz, Raquel Aparecida Sales da | pt_BR |
dc.contributor.author | Driemeier, David | pt_BR |
dc.date.accessioned | 2018-07-04T02:26:31Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 1229-845X | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/180038 | pt_BR |
dc.description.abstract | Enterotoxigenic Escherichia coli (ETEC) causes diarrhea in pigs, referred to as colibacillosis. The aim of this study was to optimize multiplex polymerase chain reaction (PCR) and immunohistochemistry (IHC) analyses of paraffin-embedded material to detect pathogenic E. coli strains causing colibacillosis in pigs. Multiplex PCR was optimized for fimbriae (F18, F4, F6, F5, and F41) and toxins (types A and B heat-stable toxins [STaP and STb], heat-labile toxin [LT], and type 2 Shiga toxin [STx2e]), and IHC was optimized for an anti-E. coli polyclonal antibody. Samples (132) from pigs received between 2006 and 2014 with clinical and histopathological diagnoses of colibacillosis were analyzed. E. coli was detected by IHC in 78.7%, and at least one virulence factor gene was detected in 71.2%. Pathogenic strains of ETEC with at least one fimbria and one toxin were detected in 40% of the samples in multiplex PCR. The most frequent virulence types were F18-STaP (7.5%), F18-STaP-STb (5.7%), and F4-STaP (3.8%). A statistically significant association was noted between virulence factors F4, F18, STaP, and STb and positive immunostaining results. Colibacillosis diagnosis through multiplex PCR and IHC of paraffin-embedded tissues is a practical approach, as samples can be fixed and stored for long periods before analysis. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Journal of veterinary science. Vol. 19, n. 1 (2018), p. 27-33 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Escherichia coli enterotoxigênica | pt_BR |
dc.subject | Enteritis | en |
dc.subject | Colibacilose suina | pt_BR |
dc.subject | Enterotoxigenic Escherichia coli | en |
dc.subject | Fatores de virulência | pt_BR |
dc.subject | Swine diseases | en |
dc.subject | Virulence factors | en |
dc.subject | Imuno-histoquímica | pt_BR |
dc.subject | Reação em cadeia da polimerase | pt_BR |
dc.title | Piglet colibacillosis diagnosis based on multiplex polymerase chain reaction and immunohistochemistry of paraffin-embedded tissues | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001069962 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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