Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction

16S DNA polymerase chain reaction (PCR) is a molecular amplification technique that can be used to identify bacterial pathogens in culture-negative endocarditis. Bacterial DNA can be isolated from surgically excised valve tissue or from blood collected in EDTA vials. Use of this technique is particu...

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Main Authors: Stephen Duffett, Bayan Missaghi, Peter Daley
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Canadian Journal of Infectious Diseases and Medical Microbiology
Online Access:http://dx.doi.org/10.1155/2012/312607
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author Stephen Duffett
Bayan Missaghi
Peter Daley
author_facet Stephen Duffett
Bayan Missaghi
Peter Daley
author_sort Stephen Duffett
collection DOAJ
description 16S DNA polymerase chain reaction (PCR) is a molecular amplification technique that can be used to identify bacterial pathogens in culture-negative endocarditis. Bacterial DNA can be isolated from surgically excised valve tissue or from blood collected in EDTA vials. Use of this technique is particularly helpful in identifying the bacterial pathogen in cases of culture-negative endocarditis. A case involving a 48-year-old man who presented with severe aortic regurgitation and a four-month prodrome of low-grade fever is reported. Blood and valve tissue cultures following valve replacement were negative. A valve tissue sample was sent for investigation with 16S DNA PCR, which successfully identified Streptococcus salivarius and was interpreted as the true diagnosis. A review of the literature suggests that 16S DNA PCR from valve tissue is a more sensitive diagnostic test than culture. It is also extremely specific, based on a sequence match of at least 500 base pairs.
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series Canadian Journal of Infectious Diseases and Medical Microbiology
spelling doaj-art-4cbe81099fa0452b9442dd41b3606c9e2025-08-20T03:36:19ZengWileyCanadian Journal of Infectious Diseases and Medical Microbiology1712-95322012-01-0123421621810.1155/2012/312607Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain ReactionStephen Duffett0Bayan Missaghi1Peter Daley2Department of Internal Medicine, Memorial University, St John’s, Newfoundland and Labrador, CanadaDivision of Infectious Diseases, Memorial University, St John’s, Newfoundland and Labrador, CanadaDivision of Infectious Diseases, Memorial University, St John’s, Newfoundland and Labrador, Canada16S DNA polymerase chain reaction (PCR) is a molecular amplification technique that can be used to identify bacterial pathogens in culture-negative endocarditis. Bacterial DNA can be isolated from surgically excised valve tissue or from blood collected in EDTA vials. Use of this technique is particularly helpful in identifying the bacterial pathogen in cases of culture-negative endocarditis. A case involving a 48-year-old man who presented with severe aortic regurgitation and a four-month prodrome of low-grade fever is reported. Blood and valve tissue cultures following valve replacement were negative. A valve tissue sample was sent for investigation with 16S DNA PCR, which successfully identified Streptococcus salivarius and was interpreted as the true diagnosis. A review of the literature suggests that 16S DNA PCR from valve tissue is a more sensitive diagnostic test than culture. It is also extremely specific, based on a sequence match of at least 500 base pairs.http://dx.doi.org/10.1155/2012/312607
spellingShingle Stephen Duffett
Bayan Missaghi
Peter Daley
Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
Canadian Journal of Infectious Diseases and Medical Microbiology
title Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
title_full Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
title_fullStr Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
title_full_unstemmed Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
title_short Culture-Negative Endocarditis Diagnosed Using 16S DNA Polymerase Chain Reaction
title_sort culture negative endocarditis diagnosed using 16s dna polymerase chain reaction
url http://dx.doi.org/10.1155/2012/312607
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AT bayanmissaghi culturenegativeendocarditisdiagnosedusing16sdnapolymerasechainreaction
AT peterdaley culturenegativeendocarditisdiagnosedusing16sdnapolymerasechainreaction