Skip to main content
Log in

Fractionation ofPneumocystis carinii developmental stages by counterflow centrifugal elutriation and sequential filtrations

  • Original Paper
  • Published:
Parasitology Research Aims and scope Submit manuscript

Abstract

Immunomagnetic sorting, sequential filtrations, and counterflow centrifugal elutriation were compared for their ability to obtain enriched populations ofPneumocystis carinii developmental stages from infected rat-lung homogenates. Elutriation combined with sequential filtrations resulted in highly (>95%) enriched populations ofP. carinii cysts and trophozoites with excellent viability. This approach offers advantages over previously described methods of obtaining enrichedP. carinii cell populations and should have important applications to research on this organism.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Allerberger F, Prior C, Niederwieser D, Dierich MP (1992) Calcofluor-white staining in the identification ofPneumocystis carinii. Pneumologie 46:158–159

    Google Scholar 

  • Babcock GF, Alexander JW, Warden GD (1990) Flow cytometric analysis of neutrophil subsets in thermally injured patients developing infections. Clin Immunol Immunopathol 54:117–125

    Google Scholar 

  • Bligh EG, Dyer WJ (1959) A rapid method of total lipid extraction and purification. Can J Biochem Physiol 37:911–917

    Google Scholar 

  • Bories C, Cardot PJP, Abramowski V, Pous C, Merino-Dugay A, Baron B, Mougeot G (1992) Elution mode ofPneumocystis carinii cysts in gravitational field-flow fractionation. J Chromatogr 579:143–152

    Google Scholar 

  • Brinchmann JE, Vartdal F, Faudernack G, Markussen G, Funderud S, Ugelstad J, Thorsby E (1988) Direct immunomagnetic quantification of lymphocyte subsets in blood. Clin Exp Immunol 71:182–186

    Google Scholar 

  • Cushion MT, Ruffolo JJ, Walzer PD (1988) Analysis of the developmental stages ofPneumocystis carinii in vitro. Lab Invest 58:324–331

    Google Scholar 

  • De Stefano JA, Sleight RG, Babcock GF, Sramkoski RM, Walzer PD (1992) Isolation ofPneumocystis carinii cysts by flow cytometry. Parasitol Res 78:179–182

    Google Scholar 

  • Durkin MM, Shaw MM, Bartlett MS, Smith JW (1991) Culture and filtration methods for obtainingPneumocystis carinii trophozoites and cysts. J Protozool 38:2105–2125

    Google Scholar 

  • Gordon CN, Elliott SG (1977) Fractionation ofSaccharomyces cerevisiae cell populations by centrifugal elutriation. J Bacteriol 129:97–100

    Google Scholar 

  • Gradus SM, Ivey MH (1983) An improved method of isolatingPneumocystis carinii: new separation method from lung tissue. Exp Parasitol 47:356–368

    Google Scholar 

  • Hughes WT (1987) In: (eds)Pneumocystis carinii pneumonitis, vol 1. CRC Press, Boca Raton, Florida, pp 14–20

    Google Scholar 

  • Ikai T, Yoshida Y, Yamada M, Ogino K, Takeuchi S (1979) Studies onPneumocystis carinii andPneumocystis carinii pneumonia. VI. Cyst purification method. Jpn J Parasitol 28:71–80

    Google Scholar 

  • Ishimaru T, Shimono N, Sawae Y, Niho Y (1992) Purification ofPneumocystis carinii trophozoites and identification of their circulating antigens. J Clin Microbiol 30:3263–3267

    Google Scholar 

  • Kaneshiro ES, Wu YP, Cushion MT (1991) Assays for testingPneumocystis carinii viability. J Protozool 38:85S-87S

    Google Scholar 

  • Kovacs JA, Halpern JL, Lundgren B, Swan JC, Parillo JE, Masur H (1989) Monoclonal antibodies toPneumocystis carinii: identification of specific antigens and characterization of antigenic differences between rat and human isolates. J Infect Dis 150:60–70

    Google Scholar 

  • Lapinsky SE, Glencross D, Car NG, Kallenbach JM, Swi S (1991) Quantification and assessment of viability ofPneumocystis carinii organisms by flow cytometry. J Clin Microbiol 29:911–915

    Google Scholar 

  • Libertin CR, Woloschak GE, Wilson WR, Smith TF (1984) Analysis ofPneumocystis carinii cysts with a fluorescence-activated cell sorter. J Clin Microbiol 20:877–880

    Google Scholar 

  • Lim SK, Eveland WC, Porter RJ (1973) Development and evaluation of a direct fluorescent antibody method for diagnosis ofPneumocystis carinii infections in experimental animals. Appl Microbiol 26:666–671

    Google Scholar 

  • Pesanti EL, McCarron BA (1988) Rapid separation ofPneumocystis carinii from lung lavage fluids. Clin Microbiol 26:1598–1599

    Google Scholar 

  • Read JA, Burns SM (1991) A simple method of separation ofPneumocystis carinii from rat lung. Int J Exp Pathol 72:673–677

    Google Scholar 

  • Sleight RG, Pagano RE (1984) Transport of a fluorescent phosphatidylcholine analog from the plasma membrane to the Golgi apparatus. J Cell Biol 99:742–751

    Google Scholar 

  • Taylor MB, Easmon CSF (1990) Separation ofPneumocystis carinii from the lung of the steroid-suppressed rat. FEMS Microbiol Lett 70:49–54

    Google Scholar 

  • Wahl LM, Katona IM, Wilder RL, Winter CC, Haraoui B, Scher I, Wahl SM (1984) Isolation of human mononuclear cell subsets by counterflow centrifugal elutriation (CCE). I. Characterization of B-lymphocyte-, T-lymphocyte-, and monocyte-enriched fractions. Cell Immunol 85:373–383

    Google Scholar 

  • Walzer PD, Rutledge ME, Yoneda K, Stahr BJ (1979) A new method of sparating Pneumocystis carinii from infected lung tissue. J Parasitol 47:356–368

    Google Scholar 

  • Walzer PD, Kim CK, Foy JM, Linke MJ, Cushion MT (1988) Inhibitors of folic acid synthesis in the treatment of experimentalPneumocystis carinii pneumonia. Antimicrob Agents Chemother 32:96–103

    Google Scholar 

  • Walzer PD, Kim CK, Cushion MT (1989)Pneumocystis carinii. In: Walzer PD, Genta RM (eds) Parasitic infections in the compromised host. Marcel Dekker, New York, pp 83–178

    Google Scholar 

  • Walzer PD, Foy J, Steele P, Kim CK, White M, Klein RS, Otter BA (1992) Activities of antifolate, antiviral, and other drugs in an immunosuppressed rat model ofPneumocystis carinii pneumonia. Antimicrob Agents Chemother 36:1935–1942

    Google Scholar 

  • Watanabe J, Tanabe K, Shimada K (1987) Separation of trophozoites ofPneumocystis carinii from lung of the inoculated nude rat. Jpn J Exp Med 57:295–297

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

This study was supported by grants R01-AI-32889 (to H.v.H.), R01-AI-31702 (to P.D.W.), and R01-HL-46653 (to P.D.W.) and contract N01-AI-25139 (to P.D.W.) from the National Institutes of Health (NIH) and by the Medical Research Service, Department of Veterans Affairs, University of Cincinnati

Rights and permissions

Reprints and permissions

About this article

Cite this article

De Stefano, J.A., Foy, J.M., Sullivan, D.W. et al. Fractionation ofPneumocystis carinii developmental stages by counterflow centrifugal elutriation and sequential filtrations. Parasitol Res 80, 1–9 (1994). https://doi.org/10.1007/BF00932616

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00932616

Keywords

Navigation