Detection of Single Cells of Cryptococcus neoformans in Clinical Samples by Solid-Phase Cytometry

Author:

Bauters T. G. M.1,Swinne D.2,Stove V.3,Nelis H. J.1

Affiliation:

1. Laboratory for Pharmaceutical Microbiology, Department of Pharmaceutical Analysis, Ghent University

2. Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium

3. Department of Clinical Chemistry, Microbiology, and Immunology, Ghent University Hospital, Ghent

Abstract

ABSTRACT A method based on solid-phase cytometry for the detection and enumeration of single cells of Cryptococcus neoformans in serum and cerebrospinal fluid is described. Both viable and nonviable cells are detected by using fluorescence viability labeling and immunofluorescence. This 30-min procedure has a detection limit of 3 to 6 cells per ml.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference6 articles.

1. Bauters, T. G. M., M. Moerman, G. Pini, H. Vermeersch, and H. J. Nelis. 2001. Colonization of a voice prosthesis by Cryptococcus neoformans. Med. Mycol.39:379-381.

2. Bialek, R., M. Weiss, K. Bekure-Nemariam, L. K. Najvar, M. B. Alberdi, J. R. Graybill, and U. Reischl. 2002. Detection of Cryptococcus neoformans DNA in tissue samples by nested and real-time PCR assays. Clin. Diagn. Lab. Immunol.9:461-469.

3. Casadevall A. and J. R. Perfect. 1998. Diagnosis and laboratory techniques p. 381-405. In A. Casadevall and J. R. Perfect (ed.) Cryptococcus neoformans . ASM Press Washington D.C.

4. D'Haese, E., and H. J. Nelis. 2002. Rapid detection of single cell bacteria as a novel approach in food microbiology. J. AOAC (Assoc. Off. Anal. Chem.) Int.85:979-983.

5. Serotyping of Cryptococcus neoformans by using a monoclonal antibody specific for capsular polysaccharide

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