A1 Refereed original research article in a scientific journal
16S rDNA PCR-denaturing gradient gel electrophoresis in detennining proportions of coexisting Actinobacillus actinomycetemcomitans strains
Authors: Ihalin R, Asikainen S
Publisher: ELSEVIER SCIENCE BV
Publication year: 2006
Journal: Journal of Microbiological Methods
Journal name in source: JOURNAL OF MICROBIOLOGICAL METHODS
Journal acronym: J MICROBIOL METH
Volume: 65
Issue: 3
First page : 417
Last page: 424
Number of pages: 8
ISSN: 0167-7012
DOI: https://doi.org/10.1016/j.mimet.2005.08.016
Web address : https://www.sciencedirect.com/science/article/pii/S0167701205002769?via=ihub
Abstract
Certain serotypes of Actinobacillus actinomycetemcomitans seem to prefer coexistence in vivo. The 16S rDNA PCR-denaturing gradient gel electrophoresis (DGGE) was tested for its capability to distinguish coexisting A. actinomycetemcomitans strains of different serotypes or genetic lineages and to determine their proportions in vitro. The migration pattern of the PCR amplicon from serotype c differed from those of the other serotypes. Contrary to the strains of serotypes c, d, and e, strains of serotypes a, b, and f consistently demonstrated intra-serotype migration patterns similar to each other. Since the migration patterns differed between serotype c and b strains a strain of each was used to determine their proportional representation in a strain mixture. The strains were distinguishable from each other above the 5% PCR-DGGE detection level (12.5 ng DNA/1.5 x 10(6) cells). DGGE provides a promising tool for in vitro studies on the coexistence of different genetic lineages of A. actinomycetemcomitans. (c) 2005 Elsevier B.V. All rights reserved.
Certain serotypes of Actinobacillus actinomycetemcomitans seem to prefer coexistence in vivo. The 16S rDNA PCR-denaturing gradient gel electrophoresis (DGGE) was tested for its capability to distinguish coexisting A. actinomycetemcomitans strains of different serotypes or genetic lineages and to determine their proportions in vitro. The migration pattern of the PCR amplicon from serotype c differed from those of the other serotypes. Contrary to the strains of serotypes c, d, and e, strains of serotypes a, b, and f consistently demonstrated intra-serotype migration patterns similar to each other. Since the migration patterns differed between serotype c and b strains a strain of each was used to determine their proportional representation in a strain mixture. The strains were distinguishable from each other above the 5% PCR-DGGE detection level (12.5 ng DNA/1.5 x 10(6) cells). DGGE provides a promising tool for in vitro studies on the coexistence of different genetic lineages of A. actinomycetemcomitans. (c) 2005 Elsevier B.V. All rights reserved.
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