Skip to main content
Infection and Immunity logoLink to Infection and Immunity
. 1983 May;40(2):840–842. doi: 10.1128/iai.40.2.840-842.1983

Role of Phospholipase-Associated Penetration Mechanism in Cell Injury by Rickettsia rickettsii

David H Walker 1, William T Firth 1, J Glen Ballard 1, Barbara C Hegarty 1
PMCID: PMC264933  PMID: 6404837

Abstract

The cholesterol receptor-binding drugs amphotericin B and digitonin reduced rickettsial plaque formation, presumably by blocking rickettsial attachment, even when added to the plaque model on day 4 post-inoculation when infected foci were well established. The phospholipase inhibitor phentermine reduced plaque formation, presumably by inhibiting the phospholipase-associated entry step of penetration.

Full text

PDF
840

Selected References

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

  1. Hoeprich P. D., Huston A. C. Stability of four antifungal antimicrobics in vitro. J Infect Dis. 1978 Jan;137(1):87–93. doi: 10.1093/infdis/137.1.87. [DOI] [PubMed] [Google Scholar]
  2. Ramm L. E., Winkler H. H. Identification of cholesterol in the receptor site for rickettsiae on sheep erythrocyte membranes. Infect Immun. 1976 Jan;13(1):120–126. doi: 10.1128/iai.13.1.120-126.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Ramm L. E., Winkler H. H. Rickettsial hemolysis: adsorption of rickettsiae to erythrocytes. Infect Immun. 1973 Jan;7(1):93–99. doi: 10.1128/iai.7.1.93-99.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Ramm L. E., Winkler H. H. Rickettsial hemolysis: effect of metabolic inhibitors upon hemolysis and adsorption. Infect Immun. 1973 Apr;7(4):550–555. doi: 10.1128/iai.7.4.550-555.1973. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Vigo C., Lewis G. P., Piper P. J. Mechanisms of inhibition of phospholipase A2. Biochem Pharmacol. 1980 Feb 15;29(4):623–627. doi: 10.1016/0006-2952(80)90386-x. [DOI] [PubMed] [Google Scholar]
  6. Walker D. H., Cain B. G. The rickettsial plaque. Evidence for direct cytopathic effect of Rickettsia rickettsii. Lab Invest. 1980 Oct;43(4):388–396. [PubMed] [Google Scholar]
  7. Walker D. H., Firth W. T., Edgell C. J. Human endothelial cell culture plaques induced by Rickettsia rickettsii. Infect Immun. 1982 Jul;37(1):301–306. doi: 10.1128/iai.37.1.301-306.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Walker T. S., Winkler H. H. Penetration of cultured mouse fibroblasts (L cells) by Rickettsia prowazeki. Infect Immun. 1978 Oct;22(1):200–208. doi: 10.1128/iai.22.1.200-208.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Wike D. A., Burgdorfer W. Plaque formation in tissue cultures by Rickettsia rickettsi isolated directly from whole blood and tick hemolymph. Infect Immun. 1972 Nov;6(5):736–738. doi: 10.1128/iai.6.5.736-738.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Wike D. A., Ormsbee R. A., Tallent G., Peacock M. G. Effects of various suspending media on plaque formation by rickettsiae in tissue culture. Infect Immun. 1972 Oct;6(4):550–556. doi: 10.1128/iai.6.4.550-556.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Wike D. A., Tallent G., Peacock M. G., Ormsbee R. A. Studies of the rickettsial plaque assay technique. Infect Immun. 1972 May;5(5):715–722. doi: 10.1128/iai.5.5.715-722.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Winkler H. H. Inhibitory and restorative effects of adenine nucleotides on rickettsial adsorption and hemolysis. Infect Immun. 1974 Jan;9(1):119–126. doi: 10.1128/iai.9.1.119-126.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Winkler H. H., Miller E. T. Phospholipase A activity in the hemolysis of sheep and human erythrocytes by Rickettsia prowazeki. Infect Immun. 1980 Aug;29(2):316–321. doi: 10.1128/iai.29.2.316-321.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Winkler H. H., Ramm L. E. Adsorption of typhus rickettsiae to ghosts of sheep erythrocytes. Infect Immun. 1975 Jun;11(6):1244–1251. doi: 10.1128/iai.11.6.1244-1251.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Winkler H. H. Rickettsial hemolysis: adsorption, desorption, readsorption, and hemagglutination. Infect Immun. 1977 Sep;17(3):607–612. doi: 10.1128/iai.17.3.607-612.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Infection and Immunity are provided here courtesy of American Society for Microbiology (ASM)

RESOURCES