| Autor: |
Ledwaba, Solanka Ellen, Bolick, David Thomas, de Medeiros, Pedro Henrique Quintela Soares, Kolling, Glynis Luanne, Traore, Afsatou Ndama, Potgieter, Natasha, Nataro, James Paul, Guerrant, Richard Littleton |
| Zdroj: |
Brazilian Journal of Microbiology; 20220101, Issue: Preprints p1-7, 7p |
| Abstrakt: |
Bundle-forming pili (BFP) are implicated in the virulence of typical enteropathogenic E. coli(EPEC), resulting in enhanced colonization and mild to severe disease outcomes; hence, non-functional BFP may have a major influence on disease outcomes in vivo. Weaned antibiotic pre-treated C57BL/6 mice were orally infected with EPEC strain UMD901 (E2348/69 bfpAC129S); mice were monitored daily for body weight; stool specimens were collected daily; and intestinal tissues were collected at the termination of the experiment on day 3 post-infection. Real-time PCR was used to quantify fecal shedding and tissue burden. Intestinal inflammatory biomarkers lipocalin-2 (LCN-2) and myeloperoxidase (MPO) were also assessed. Infection caused substantial body weight loss, bloody diarrhea, and intestinal colonization with fecal and intestinal tissue inflammatory biomarkers that were comparable to those previously published with the wild-type typical EPEC strain. Here we further report on the evaluation of an EPEC infection model, showing how disruption of bfpfunction does not impair, and may even worsen diarrhea, colonization, and intestinal disruption and inflammation. More research is needed to understand the role of bfpin pathogenicity of EPEC infections in vivo. |
| Databáze: |
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