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Journal of Clinical Microbiology, Nov 1997, 2733-2739, Vol 35, No. 11
D Goldenberger, A Kunzli, P Vogt, R Zbinden and M Altwegg
Broad-range PCR amplification of part of the 16S rRNA gene followed by
single-strand sequencing was applied to samples of 18 resected heart valves
from patients with infective endocarditis. The PCR results were compared
with those of cultures of valves and with those of previous blood cultures.
For two patients there was agreement with the cultures of the valves; for
nine patients there was agreement with the previous blood cultures, which
were positive, while the cultures of the valves were negative; a
Streptococcus sp. and Tropheryma whippelii each were found in one patient
with negative cultures (valve and blood); for two patients the cultures of
the valves as well as the PCR results were negative but the blood cultures
were positive; for one patient amplification was inhibited; and for two
patients the PCR results were positive but the amplicons could not be
sequenced. It is concluded that broad-range PCR is a promising tool for
patients with culture-negative endocarditis and allows the detection of
rare, noncultivable organisms.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Molecular diagnosis of bacterial endocarditis by broad-range PCR amplification and direct sequencing [In Process Citation]
Department of Medical Microbiology, University of Zurich, Switzerland.
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