Evidence map›Paper›PMID 19572900›Full record

ArticleOral microbiology and immunology2009

Proteomic analysis of endodontic infections by liquid chromatography-tandem mass spectrometry.

R Nandakumar, N Madayiputhiya, A F Fouad

Open access · greenAbstract read
In one paragraph

Article in Oral microbiology and immunology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 16% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
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  12. Mass spectrometric analysis of multiple pertussis toxins and toxoids.Journal of biomedicine & biotechnology · 2010
    Article
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

3 authors at 1 institution in 1 country.

R NandakumarDepartment of Endodontics, Prosthodontics and Operative Dentistry, Baltimore College of Dental Surgery, Baltimore, MD, USA.
N Madayiputhiya
A F Fouad
University of Maryland, Baltimore · US

Funding

Primary and Therapy-Resistant Endodontic InfectionsR01DE015320 · NIDCR · UNIVERSITY OF MARYLAND BALTIMORE · PI FOUAD, ASHRAF F · 2005 to 2008
$1.5M
Endodontic infections in type 1 diabetic hostsR21DE014476 · NIDCR · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI FOUAD, ASHRAF F · 2001 to 2002
$289k
NIDCR NIH HHS DE014476NIDCR NIH HHS R01 DE015320NIDCR NIH HHS R21 DE014476
6 · The paper itself

Abstract

introductionEndodontic infections are very prevalent and have a polymicrobial etiology characterized by complex interrelationships between endodontic microorganisms and the host defenses. Proteomic analysis of endodontic infections can provide global insights into the invasion, pathogenicity mechanisms, and multifactorial interactions existing between root canal bacteria and the host in the initiation and progression of apical periodontitis. The purpose of this study was to apply proteomic techniques such as liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the identification of proteins of bacterial origin present in endodontic infections.

methodsEndodontic specimens were aseptically obtained from seven patients with root canal infections. Protein mixtures were subjected to tryptic in-solution digestion and analysed by reverse-phase nano-LC-MS/MS followed by a database search.

resultsProteins, mainly of cell wall or membrane origin, from endodontic bacteria especially Enterococcus faecalis, Enterococcus faecium, Porphyromonas gingivalis, Fusobacterium nucleatum, and Treponema denticola were identified from all the samples tested. Identified proteins included adhesins, autolysins, proteases, virulence factors, and antibiotic-resistance proteins.

conclusionsLC-MS/MS offers a sensitive analytical platform to study the disease processes in the root canal environment. The array of proteins expressed in endodontic infections reflects the complex microbial presence and highlights the bacterial species involved in the inflammatory process.

Indexed as

Bacteria, AnaerobicBacterial ProteinsChromatography, LiquidDental Pulp CavityDental Pulp DiseasesEnterococcusHumansPeriapical PeriodontitisProteomeTandem Mass SpectrometryTooth, NonvitalBacterial ProteinsProteome

Identifiers

PMID19572900
PMCPMC2744886
OpenAlexW2099188953

What OpenQuestion holds

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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.