Persistent salmonellosis causes pancreatitis in a murine model of infection

Kathleen E. DelGiorno, Jason W. Tam, Jason C. Hall, Gangadaar Thotakura, Howard C. Crawford, Adrianus W.M. Van Der Velden

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Pancreatitis, a known risk factor for the development of pancreatic ductal adenocarcinoma, is a serious, widespread medical condition usually caused by alcohol abuse or gallstone-mediated ductal obstruction. However, many cases of pancreatitis are of an unknown etiology. Pancreatitis has been linked to bacterial infection, but causality has yet to be established. Here, we found that persistent infection of mice with the bacterial pathogen Salmonella enterica serovar Typhimurium (S. Typhimurium) was sufficient to induce pancreatitis reminiscent of the human disease. Specifically, we found that pancreatitis induced by persistent S. Typhimurium infection was characterized by a loss of pancreatic acinar cells, acinar-toductal metaplasia, fibrosis and accumulation of inflammatory cells, including CD11b+ F4/80 +, CD11b+ Ly6Cint Ly6G+ and CD11b+ Ly6Chi Ly6G- cells. Furthermore, we found that S. Typhimurium colonized and persisted in the pancreas, associated with pancreatic acinar cells in vivo, and could invade cultured pancreatic acinar cells in vitro. Thus, persistent infection of mice with S. Typhimurium may serve as a useful model for the study of pancreatitis as it relates to bacterial infection. Increased knowledge of how pathogenic bacteria can cause pancreatitis will provide a more integrated picture of the etiology of the disease and could lead to the development of new therapeutic approaches for treatment and prevention of pancreatitis and pancreatic ductal adenocarcinoma.

Original languageEnglish (US)
Article numbere92807
JournalPloS one
Volume9
Issue number4
DOIs
StatePublished - Apr 9 2014

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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