Evidence map›Paper›PMID 23507779›Full record

ArticleJournal of periodontal & implant science2013

Correlation of expression and activity of matrix metalloproteinase-9 and -2 in human gingival cells of periodontitis patients.

Kyung-A Kim, Soo-Bong Chung, Eun-Young Hawng, Seung-Hyun Noh, Kwon-Ho Song, Hanna-Hyun Kim, Cheorl-Ho Kim, Young-Guk Park

Open access · hybridAbstract read
In one paragraph

Article in Journal of periodontal & implant science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 24 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

8 authors at 4 institutions in 2 countries.

Kyung-A KimDepartment of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea.
Soo-Bong Chung
Eun-Young Hawng
Seung-Hyun Noh
Kwon-Ho Song
Hanna-Hyun Kim
Cheorl-Ho Kim
Young-Guk Park
Kyung Hee University Dental Hospital · KRKyung Hee University · KRSungkyunkwan University · KRNew York University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMatrix metalloproteinases (MMPs) are capable of degrading extracellular matrix, and they are inducible enzymes depending on an inflammatory environment such as periodontitis and bacterial infection in periodontal tissue. Gingival inflammation has been postulated to be correlated with the production of MMP-2 and MMP-9. The objective of this study was to quantify the expression and activity of MMP-9 and -2, and to determine the correlation between activity and expression of these MMPs in human gingival tissues with periodontitis.

methodsThe gingival tissues of 13 patients were homogenized in 500 µL of phosphate buffered saline with a protease inhibitor cocktail. The expression and activity of MMP-2 and -9 were measured by enzyme-linked immunosorbent assay and Western blot analysis, and quantified by a densitometer. For the correlation line, statistical analysis was performed using the Systat software package.

resultsMMP-9 was highly expressed in all gingival tissue samples, whereas MMP-2 was underexpressed compared with MMP-9. MMP-9 activity increased together with the MMP-9 expression level, with a positive correlation (r=0.793, P=0.01). The correlation was not observed in MMP-2.

conclusionsThe expression of MMP-2 and -9 might contribute to periodontal physiological and pathological processes, and the degree of MMP-9 expression and activity are predictive indicators relevant to the progression of periodontitis.

Indexed as

Matrix metalloproteinase 2Matrix metalloproteinase 9Periodontitis

Identifiers

PMID23507779
PMCPMC3596630
OpenAlexW2111604102

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.