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Evaluation of the detection limits of PCR for identification of Mycoplasma pneumoniae in clinical samples.

Abstract：

:The detection limits of the polymerase chain reaction (PCR) for Mycoplasma pneumoniae were determined using specimens from persons known to have had M. pneumoniae pneumonia. Four primers were selected from the known sequence of the P1 gene. The primer pair (P1-178 and P1-809) which generates a 631 fragment gave the lowest detection limit. Nineteen of 21 throat swabs, which contained between 0.06 and 2 colony-forming units (CFU) per microlitre, from culture positive patients, were positive by PCR. The fact that M. pneumoniae grows in broth culture in spherules causes problems for determining the number of CFU detected in PCR. Filtering broth cultures through a 0.6 micron polycarbonate filter increased the number of CFUs two-to-ten-fold compared to unfiltered cultures. The lysis method needed to assay throat swabs differed from that necessary for broth cultures in that proteinase K treatment for 18 h increased the detection limit 10- to 100-fold when compared to NaOH digestion.

journal_name

Mol Cell Probes

journal_title

Molecular and cellular probes

authors

Leng Z,Kenny GE,Roberts MC

doi

10.1006/mcpr.1994.1017

subject

Has Abstract

pub_date

1994-04-01 00:00:00

pages

125-30

issue

2

eissn

0890-8508

issn

1096-1194

pii

S0890-8508(84)71017-6

journal_volume

8

pub_type

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