Clostridium perfringens alpha toxin is produced in the intestines of broiler chicks inoculated with an alpha toxin mutant

Christine F. Coursodon, Hien T. Trinh, Michael Mallozzi, Gayatri Vedantam, R. D. Glock, J. G. Songer

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Poultry necrotic enteritis (NE) is caused by specific strains of Clostridium perfringens, most of which are type A. The role of alpha toxin (CPA) in NE has been called into question by the finding that an engineered cpa mutant retains full virulence in vivo [9]. This is in contrast to the finding that immunization with CPA toxoids protects against NE. We confirmed the earlier findings, in that 14-day-old Cornish × Rock broiler chicks challenged with a cpa mutant developed lesions compatible with NE in >90% of birds inoculated with the mutant. However, CPA was detected in amounts ranging from 10 to >100 ng per g of gut contents and mucosa in birds inoculated with the cpa mutant, the wildtype strain from which the mutant was constructed, and our positive control strain. There was a direct relationship between lesion severity and amount of CPA detected (R = 0.89-0.99). These findings suggest that the role of CPA in pathogenesis of NE requires further investigation.

Original languageEnglish (US)
Pages (from-to)614-617
Number of pages4
JournalAnaerobe
Volume16
Issue number6
DOIs
StatePublished - Dec 1 2010

Keywords

  • Alpha toxin
  • Broiler chickens
  • Clostridium perfringens
  • Necrotic enteritis
  • Pathogenesis

ASJC Scopus subject areas

  • Microbiology
  • Infectious Diseases

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