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. 1991 Oct;29(10):2158–2162. doi: 10.1128/jcm.29.10.2158-2162.1991

Use of synthetic oligonucleotide DNA probes for identification and direct detection of Bacteroides forsythus in plaque samples.

B J Moncla 1, S T Motley 1, P Braham 1, L Ewing 1, T H Adams 1, N M Vermeulen 1
PMCID: PMC270290  PMID: 1719022

Abstract

Oligonucleotide DNA probes complementary to the hypervariable region of the 16S rRNA of Bacteroides forsythus were tested for their specificity and sensitivity against reference and clinical isolates of 73 different species of bacteria. The probes were used to detect the organism directly from nucleic acid extracts of subgingival plaque samples, and the results were compared with results of detection by culture methods. The data demonstrate that the probes are very specific (100%) and sensitive (100% when they are compared with those obtained by the culture method) and could reliably detect the organism in plaque samples. When a probe to a conserved region of the 16S rRNA (UP9A) was used to estimate the quantity of bacteria present in plaque samples, it gave results comparable to those of culture methods. The data suggest that total microbial load may be a parameter in periodontal disease.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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