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. 1972 Mar;5(3):363–369. doi: 10.1128/iai.5.3.363-369.1972

Vascular Permeability Factor of Pseudomonas aeruginosa

Hideo Kusama 1, Robert H Suss 1
PMCID: PMC422376  PMID: 4629079

Abstract

The production of vascular permeability factor (PF) by certain strains of Pseudomonas aeruginosa has been demonstrated in rabbits injected intradermally with culture filtrates followed by intravenous injection with Pontamine Sky Blue 6BX. The dose-response curve was found to be rectilinear when lesion diameters, within the range of 10 to 20 mm, were plotted against log dose. Thus, PF in test filtrates can be measured with reasonable accuracy by the concomitant testing of a reference PF. In contrast to the titers of PF obtained with Vibrio cholerae cultures, those with strains of P. aeruginosa were rather low. Thus far, PF has been demonstrated only in shallow still cultures of P. aeruginosa and not in shake cultures. A variety of commercial media were tested for the production of PF, but none was satisfactory. A synthetic medium that gave more reproducible and higher yields of PF was developed. Cultivation at 30 C generally gave higher yields of PF than at 37 C. PF was destroyed by heating at 60 C for 30 min or by digesting with trypsin or Pronase. Strains producing larger amounts of PF appeared to have greater virulence when inoculated onto the surface of burns in mice than those yielding little or no PF.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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