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The ability of Fla ‐typing schemes to discriminate between strains of Campylobacter jejuni
Author(s) -
Petersen L.,
Newell D.G.
Publication year - 2001
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1046/j.1365-2672.2001.01383.x
Subject(s) - subtyping , typing , campylobacter jejuni , biology , genotyping , flagellin , restriction fragment length polymorphism , restriction enzyme , microbiology and biotechnology , genetics , pulsed field gel electrophoresis , gene , polymerase chain reaction , genotype , bacteria , computer science , programming language
Aims: The aim of this investigation was to compare the usefulness of two previously published flagellin PCR‐RFLP typing ( Fla ‐typing) techniques for the subtyping of Campylobacter jejuni strains, in terms of ease of use and discriminatory power. Methods and Results: Six groups of isolates, which were epidemiologically unrelated but with similar Fla ‐types, and five groups of epidemiologically related poultry isolates, with similar PFGE profiles, were used in the comparison. The Fla‐ typing methods used varied in the number and length of fla ‐genes amplified and the restriction enzymes used. In addition, the use of separately amplified PCR fragments of both the fla A and fla B genes to generate RFLP profiles was investigated. Conclusions: The results clearly demonstrated that both previously published methods exhibit some advantages over the other. However, optimal discrimination was obtained by the use of separately amplified PCR fragments of both fla ‐genes. Significance and Impact of the Study: The subtyping of Camp. jejuni isolates is considered essential for epidemiological purposes. Genotyping methods are now more frequently used but have yet to be standardized. Fla ‐typing is a rapid and easy to use method with acceptable discriminatory power. However, the discriminatory power of the currently published Fla ‐ typing techniques may be further improved by incorporating RFLP profiles of both fla‐ genes.