The role of proteases and exotoxin A in the pathogenicity of Pseudomonas aeruginosa infections.

Most Pseudomonas aeruginosa strains produce exotoxin A and two extracellular proteases (elastase and alkaline protease). Exotoxin A is a lethal toxin that inhibits protein synthesis in mammalian cells by the same mechanism as diphtheria toxin. It is generated in clinical and experimental animal infections. Passive or active immunization against this toxin gives significant protection against experimental infections with exotoxin-producing strains. The proteases have tissue-damaging activity and are capable of degrading various plasma proteins such as complement and coagulation factors. Proteases probably play a part in localized pseudomonas infections such as keratitis, pneumonia and burn infection. When invasion and colonization have occurred and septicemia is established, these enzymes probably are less important.
AuthorsB Wretlind, O R Pavlovskis
JournalScandinavian journal of infectious diseases. Supplementum (Scand J Infect Dis Suppl) Vol. 29 Pg. 13-9 ( 1981) ISSN: 0300-8878 [Print] SWEDEN
PMID6797058 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)
Chemical References
  • Bacterial Toxins
  • Exotoxins
  • Virulence Factors
  • ADP Ribose Transferases
  • toxA protein, Pseudomonas aeruginosa
  • Peptide Hydrolases
  • Pancreatic Elastase
  • ADP Ribose Transferases
  • Animals
  • Bacterial Toxins
  • Exotoxins (pharmacology)
  • Humans
  • Pancreatic Elastase (physiology)
  • Peptide Hydrolases (metabolism, physiology)
  • Pseudomonas Infections (microbiology)
  • Pseudomonas aeruginosa (metabolism, pathogenicity)
  • Virulence Factors

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