Evidence map›Paper›PMID 8897163›Full record

ArticleJournal of clinical microbiology1996

Multiplex PCR using conserved and species-specific 16S rRNA gene primers for simultaneous detection of Actinobacillus actinomycetemcomitans and Porphyromonas gingivalis.

S D Tran, J D Rudney

Abstract readComparative Study
In one paragraph

Article in Journal of clinical microbiology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

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  8. Microbial cell (Graz, Austria) · 2019
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  13. The rag locus of Porphyromonas gingivalis might arise from Bacteroides via horizontal gene transfer.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2010
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

S D TranDepartment of Oral Science, School of Dentistry, University of Minnesota, Minneapolis 55455, USA.
J D Rudney

Funding

IN VIVO STUDIES OF SALIVA ANTIMICROBIAL PROTEINSR01DE007233 · NIDCR · UNIVERSITY OF MINNESOTA TWIN CITIES · PI RUDNEY, JOEL D. · 1991 to 2001
$403k
POSTDOCTORAL TRAINING IN DENTAL CARIES RESEARCHT32DE007014 · NIDCR · UNIVERSITY OF MINNESOTA TWIN CITIES · PI SCHACHTELE, CHARLES F · 1985 to 1995
–
NIDCR NIH HHS 2RO1 DE07233NIDCR NIH HHS 2T32 DE07014
6 · The paper itself

Abstract

Actinobacillus actinomycetemcomitans and Porphyromonas gingivalis are strongly associated with periodontitis. However, little is known about their distribution in periodontally healthy individuals, because culturing techniques are not sufficiently sensitive. A modified multiplex PCR was developed to address that question. Our method uses two species-specific forward primers in combination with a single reverse primer. These primers target variable and conserved regions of the 16S rRNA gene. Sensitivity was determined by testing serial dilutions of A. actinomycetemcomitans and P. gingivalis cells. Primer specificity was tested against (i) six A. actinomycetemcomitans strains and four P. gingivalis strains, (ii) seven different species of oral bacteria, and (iii) supra- and subgingival plaque from 20 subjects. The multiplex PCR had a lower limit of detection of 2 A. actinomycetemcomitans and 30 P. gingivalis cells. Species-specific amplicons were obtained for all A. actinomycetemcomitans and P. gingivalis strains tested and did not occur with seven other bacterial species unless A. actinomycetemcomitans and P. gingivalis were added. Neither target species was detected in supragingival plaque; A. actinomycetemcomitans was detected in one subgingival specimen, and P. gingivalis was detected in another. When plaque samples were spiked with 10 A. actinomycetemcomitans cells and 100 P. gingivalis cells, species-specific amplicons were detected. These findings show our multiplex PCR to be highly sensitive and specific while allowing simultaneous detection of A. actinomycetemcomitans and P. gingivalis. This assay has potential applications in epidemiological studies, diagnosis, treatment planning, and monitoring of periodontal pathogens.

Indexed as

Aggregatibacter actinomycetemcomitansBase SequenceConserved SequenceDNA, BacterialDNA PrimersDNA, RibosomalEvaluation Studies as TopicGenes, BacterialHumansMolecular Sequence DataPeriodontitisPolymerase Chain ReactionPorphyromonas gingivalisRNA, BacterialRNA, Ribosomal, 16SSensitivity and SpecificityDNA, BacterialDNA PrimersDNA, RibosomalRNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID8897163
PMCPMC229384

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.