NDLI: Differentiation of Campylobacter jejuni Serotype O19 Strains from Non-O19 Strains by PCR

Content Provider	PubMed Central
Author	Misawa, Naoaki Mishu, Allos Ban Blaser, Martin J.
Copyright Year	1998
Abstract	Guillain-Barré syndrome (GBS), a neurologic disease characterized by acute paralysis, is frequently preceded by Campylobacter jejuni infection. Serotype O19 strains are overrepresented among GBS-associated C. jejuni isolates. We previously showed that all O19 strains tested were closely related to one another by randomly amplified polymorphic DNA (RAPD) and restriction fragment length polymorphism analyses. RAPD analysis demonstrated a 1.4-kb band in all O19 strains tested but in no non-O19 strains. We cloned this O19-specific band; nucleotide sequence analysis revealed a truncated open reading frame with significant homology to DNA gyrase subunit B (gyrB) of Helicobacter pylori. PCR using the random primer and a primer specific for gyrB showed that in non-O19 strains, the random primer did not recognize the downstream gyrB binding site. The regions flanking each of the random primer binding sites were amplified by degenerate PCR for further sequencing. Although the random primer had several mismatches with the downstream gyrB binding site, a single nucleotide polymorphism 6 bp upstream from the 3′ terminus was found to distinguish O19 and non-O19 strains. PCR using 3′-mismatched primers based on this polymorphism was designed to differentiate O19 strains from non-O19 strains. When a total of 42 (18 O19 and 24 non-O19) strains from five different countries were examined, O19 strains were distinguishable from non-O19 strains in each case. This PCR method should permit identification of O19 C. jejuni strains.
Starting Page	3567
File Format	PDF
ISSN	1098660X
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	12
Volume Number	36
Language	English
Publisher	American Society for Microbiology
Publisher Date	1998-12-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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Differentiation of Campylobacter jejuni Serotype O19 Strains from Non-O19 Strains by PCR

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