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Clin Infect Dis. 1995 Oct;21(4):891-6.

Use of the polymerase chain reaction and DNA sequencing for detection of Bartonella quintana in the aortic valve of a patient with culture-negative infective endocarditis.

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Department of Medical Microbiology, Turku University, Turku University Central Hospital, Finland.


We used the polymerase chain reaction (PCR) and broad-range bacterial primers, combined with DNA sequencing, to identify Bartonella quintana as the etiologic agent in a case of culture-negative infective endocarditis; all blood cultures, as well as the bacterial cultures of the resected aortic valve and vegetations, remained negative. PCR was used to amplify bacterial 16S rDNA from a template prepared from the aortic valve vegetation. The amplified 16S rDNA produced a nucleotide sequence that was 99.79% identical to the B. quintana rDNA sequence. The patient had a highly elevated level of serum antibodies to Bartonella antigen (1:8,192).

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