Evidence map›Paper›PMID 10338509›Full record

ArticleInfection and immunity1999

Modulation of major histocompatibility complex protein expression by human gamma interferon mediated by cysteine proteinase-adhesin polyproteins of Porphyromonas gingivalis.

P L Yun, A A DeCarlo, N Hunter

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1999. 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
3.1field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 47 citations in OpenAlex.

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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

3 authors at 2 institutions in 2 countries.

P L YunInstitute of Dental Research, Surry Hills, New South Wales 2010, Australia. pyun@denistry.usyd.edu.au
A A DeCarlo
N Hunter
Sydney Dental Hospital · AUUniversity of Alabama at Birmingham · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cysteine proteinases have been emphasized in the virulence of Porphyromonas gingivalis in chronic periodontitis. These hydrolases may promote the degradation of extracellular matrix proteins and disrupt components of the immune system. In this study it was shown that purified Arg-gingipain and Lys-gingipain inhibited expression of class II major histocompatibility complex (MHC) proteins in response to the stimulation of endothelial cells with human gamma interferon (IFN-gamma). Treatment with the cysteine proteinases resulted in a rapid shift in the apparent molecular size of IFN-gamma from 17 to 15 kDa, as shown by Western blot analysis, a response which also occurred in the presence of serum. Further, glycosylated natural IFN-gamma from human leukocytes and unglycosylated recombinant IFN-gamma from Escherichia coli were both digested by the cysteine proteinases. Immunoblot analysis indicated that cleavage within the carboxyl terminus of recombinant IFN-gamma correlated with the loss of induction of MHC class II expression as monitored by analytical flow cytometry. No hydrolysis of MHC class II molecules or human IFN-gamma receptor by these proteinases was detected by Western blot analysis. These findings suggest that P. gingivalis cysteine proteinases may alter the cytokine network at the point of infection through the cleavage of IFN-gamma. Degradation of IFN-gamma could have important consequences for the recruitment and activation of leukocytes and therefore may contribute significantly to the destruction of the periodontal attachment.

Indexed as

Adhesins, BacterialCells, CulturedCysteine EndopeptidasesCysteine Proteinase InhibitorsEndothelium, VascularEpitopes, B-LymphocyteGingipain Cysteine EndopeptidasesHemagglutininsHLA-DR AntigensHumansInterferon-gammaLeupeptinsPorphyromonas gingivalisProteinsRecombinant ProteinsAdhesins, BacterialCysteine EndopeptidasesCysteine Proteinase InhibitorsEpitopes, B-LymphocyteGingipain Cysteine EndopeptidasesHemagglutininsHLA-DR AntigensInterferon-gammaleupeptinLeupeptinsProteinsRecombinant Proteins

Identifiers

PMID10338509
PMCPMC96610
OpenAlexW2129318402

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.