Literature DB >> 7929749

Development and evaluation of a rapid and simple procedure for detection of Pneumocystis carinii by PCR.

C P Cartwright1, N A Nelson, V J Gill.   

Abstract

We report the development of a simplified PCR-based assay for the detection of Pneumocystis carinii DNA in clinical specimens. The adoption of a rapid DNA extraction procedure and the introduction of a type of enzyme-linked immunosorbent assay for PCR product detection enabled this procedure to be carried out in a single working day in a clinical microbiology laboratory. The PCR assay was prospectively compared with an immunofluorescent-antibody (FA) staining method for the detection of P. carinii in induced sputum and bronchoalveolar lavage (BAL) specimens. The results of the study showed that, for induced sputum specimens, FA staining had a sensitivity of 78% (32 of 41 specimens) and a specificity of 100% (166 of 166 specimens); PCR was 100% (41 of 41 specimens) sensitive and 98% (162 of 166 specimens) specific. For BAL specimens, FA staining was 100% sensitive (21 of 21 specimens) and 100% specific (133 of 133 specimens), and PCR had a sensitivity of 100% (21 of 21 specimens) and a specificity of 99% (132 of 133 specimens). These results strongly suggest that use of our PCR-based assay could effect clinically useful improvements in the sensitivity of induced sputum specimens for the detection of P. carinii.

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Year:  1994        PMID： 7929749      PMCID： PMC263745          DOI： 10.1128/jcm.32.7.1634-1638.1994

Source DB:  PubMed          Journal:  J Clin Microbiol        ISSN： 0095-1137            Impact factor:   5.948


  14 in total

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