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Journal of Clinical Microbiology, 03 1995, 615-617, Vol 33, No. 3
C Romero, C Gamazo, M Pardo and I Lopez-Goni
A PCR assay with primers derived from the 16S rRNA sequence of Brucella
abortus was developed. Nine different combinations between six primers were
tested. One pair of primers, which amplified a 905-bp fragment, was
selected. As little as 80 fg of Brucella DNA was detected by this method.
DNAs from all of the representative strains of the species and biovars of
Brucella and from 23 different Brucella isolates were analyzed and yielded
exclusively the 905-bp fragment. No amplification was detected with DNAs
from 10 strains phylogenetically related to Brucella spp., 5 gram-negative
bacteria showing serological cross- reactions with Brucella spp., and 36
different clinical isolates of non- Brucella species. Only Ochrobactrum
anthropi biotype D yielded a PCR product of 905 bp, suggesting a closer
relationship between Brucella spp. and O. anthropi biotype D. The
specificity and high sensitivity of the PCR assay may provide a valuable
tool for the diagnosis of brucellosis.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Specific detection of Brucella DNA by PCR
Departamento de Microbiologia, Universidad de Navarra, Pamplona, Spain.
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