Evidence map›Paper›PMID 15297553›Full record

ArticleJournal of clinical microbiology2004

Distribution of Porphyromonas gingivalis biotypes defined by alleles of the kgp (Lys-gingipain) gene.

Mangala A Nadkarni, Ky-Anh Nguyen, Cheryl C Chapple, Arthur A DeCarlo, Nicholas A Jacques, Neil Hunter

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.3field-weighted citation impact, top 39% of its field
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

6 citing papers in PubMed, 16 citations in OpenAlex.

  1. Synergistic Roles of Fimbriae and Gingipain Genotypes inInternational journal of dentistry · 2026
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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

6 authors at 2 institutions in 3 countries.

Mangala A NadkarniInstitute of Dental Research, Westmead Centre for Oral Health, P.O. Box 533, Wentworthville, NSW 2145, Australia. mnadkarni@dental.wsahs.nsw.gov.au
Ky-Anh Nguyen
Cheryl C Chapple
Arthur A DeCarlo
Nicholas A Jacques
Neil Hunter
Millennium Institute · BRNova Southeastern University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Paired subgingival plaque samples representing the most-diseased and least-diseased sites were collected from 34 adult patients with diagnosed chronic periodontitis. The percentage of Porphyromonas gingivalis relative to the total anaerobic and gram-negative bacterial load at each site was determined by real-time PCR. Based on variations in the noncatalytic C terminus of the Lys-gingipain (Kgp), it was reasoned that DNA sequence variation in the 3'-coding region of the kgp gene might determine functional biotypes. Perusal of the available sequence information in GenBank indicated three such forms of the kgp gene corresponding to P. gingivalis strains HG66, 381, and W83. Analysis of patient samples revealed the presence of a fourth genotype (W83v) that showed duplication of a sequence recognized by the W83 reverse primer. The four biotypes, HG66, 381, W83, and W83v, were present in the study group in the ratio 8:11:6:5, respectively. Each subject was colonized by one predominant biotype, and only three patients were colonized by a trace amount of a second biotype.

Indexed as

Adhesins, BacterialAdultBacteroidaceae InfectionsBase SequenceChromosome MappingCysteine EndopeptidasesDental PlaqueDNA PrimersGenes, BacterialGingipain Cysteine EndopeptidasesGingivaHemagglutininsHumansPeriodontitisPorphyromonas gingivalisAdhesins, BacterialCysteine EndopeptidasesDNA PrimersGingipain Cysteine EndopeptidasesHemagglutinins

Identifiers

PMID15297553
PMCPMC497644
OpenAlexW2164555092

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.