Contribution of flagella and motility to gut colonisation and pathogenicity of Salmonella Enteritidis in the chicken

Autor(es)

Barbosa, Fernanda de Oliveira ^[1] ; de Freitas Neto, Oliveiro Caetano ^[2] ; Alves Batista, Diego Felipe ^[1] ; de Almeida, Adriana Maria ^[1] ; Rubio, Marcela da Silva ^[1] ; Rodrigues Alves, Lucas Bocchini ^[1] ; Vasconcelos, Rosemeire de Oliveira ^[1] ; Barrow, Paul Andrew ^[3] ; Berchieri Junior, Angelo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Patol Vet, Jaboticabal, SP - Brazil

^[2] Univ Fed Paraiba, Dept Ciencias Vet, Areia, Paraiba - Brazil

^[3] Univ Nottingham, Sch Vet Med & Sci, Sutton Bonington Campus, Nottingham, Leics - England

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Microbiology; v. 48, n. 4, p. 754-759, OCT-DEC 2017.
• Citações Web of Science: 6

Resumo

ABSTRACT Salmonella Enteritidis causes fowl paratyphoid in poultry and is frequently associated to outbreaks of food-borne diseases in humans. The role of flagella and flagella-mediated motility into host-pathogen interplay is not fully understood and requires further investigation. In this study, one-day-old chickens were challenged orally with a wild-type strain Salmonella Enteritidis, a non-motile but fully flagellated (SE ΔmotB) or non-flagellated (SE ΔfliC) strain to evaluate their ability to colonise the intestine and spread systemically and also of eliciting gross and histopathological changes. SE ΔmotB and SE ΔfliC were recovered in significantly lower numbers from caecal contents in comparison with Salmonella Enteritidis at early stages of infection (3 and 5 dpi). The SE ΔmotB strain, which synthesises paralysed flagella, showed poorer intestinal colonisation ability than the non-flagellated SE ΔfliC. Histopathological analyses demonstrated that the flagellated strains induced more intense lymphoid reactivity in liver, ileum and caeca. Thus, in the present study the flagellar structure and motility seemed to play a role in the early stages of the intestinal colonisation by Salmonella Enteritidis in the chicken. (AU)

• Processo FAPESP: 13/26127-7 - Fatores envolvidos na patogenia do tifo aviário
• Beneficiário: Angelo Berchieri Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/02014-1 - Importância dos genes fliC e motB de Salmonella enterica subsp. enterica sorovar enteritidis na colonização intestinal e invasão sistêmica em Gallus gallus domesticus
• Beneficiário: Fernanda de Oliveira Barbosa
• Modalidade de apoio: Bolsas no Brasil - Mestrado