alexa Molecular diagnosis of bacterial endocarditis by broad-range PCR amplification and direct sequencing
Cardiology

Cardiology

Angiology: Open Access

Author(s): Goldenberger D

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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.

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This article was published in J Clin Microbiol. and referenced in Angiology: Open Access

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