Evidence map›Paper›PMID 27191670›Full record

ArticleCornea2016

Tear Matrix Metalloproteinases and Myeloperoxidase Levels in Patients With Boston Keratoprosthesis Type I.

Marie-Claude Robert, Samer N Arafat, Sandra Spurr-Michaud, James Chodosh, Claes H Dohlman, Ilene K Gipson

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Cornea, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04339907 (Uncovering Inflammatory Mediators of Glaucoma Pathogenesis After Corneal Transplantation in Aqueous Humor and Tears), which is not on this map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.5field-weighted citation impact, top 15% 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.

NCT04339907 naunknown statusnot on this mapstarted 2020, after this paper: background citation

Uncovering Inflammatory Mediators of Glaucoma Pathogenesis After Corneal Transplantation in Aqueous Humor and Tears

TypeinterventionalSponsorCentre hospitalier de l'Université de Montréal (CHUM)Ran2020 to 2025Enrolled200ConditionsGlaucoma, Corneal Transplantation, InflammationArmsSampling of tears, Sampling of aqueous humor
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 13 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

6 authors at 3 institutions in 2 countries.

Marie-Claude Robert*Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA; †Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA; and ‡Department of Ophthalmology, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montréal, QC, Canada.
Samer N Arafat
Sandra Spurr-Michaud
James Chodosh
Claes H Dohlman
Ilene K Gipson
Christie's · GBHarvard University · USMassachusetts Eye and Ear Infirmary · US

Funding

MUCINS OF THE OCULAR SURFACER01EY003306 · NEI · SCHEPENS EYE RESEARCH INSTITUTE · PI GIPSON, ILENE K. · 1985 to 2015
$8.9M
CELL MOTILITY AND ADHESION IN CORNEAL WOUND HEALINGR37EY003306 · NEI · SCHEPENS EYE RESEARCH INSTITUTE · PI GIPSON, ILENE K. · 1990 to 1999
–
NEI NIH HHS R01 EY003306NEI NIH HHS R37 EY003306
6 · The paper itself

Abstract

purposeTo investigate the tear levels of matrix metalloproteinases (MMPs), myeloperoxidase (MPO), and tissue inhibitor of metalloproteinase-1 in eyes after Boston keratoprosthesis type I (B-KPro) implantation and to correlate these markers with the established B-KPro prognostic categories.

methodsTear washes were collected from 40 patients (7 with autoimmune disease, 2 with chemical burn, and 31 with other noncicatrizing diagnoses). Tear levels of MMPs, MPO, and tissue inhibitor of metalloproteinase-1 were quantified using multianalyte bead-based enzyme-linked immunosorbent assays. The total MMP activity was determined using a fluorimetric assay. The analytes were compared to the underlying diagnosis and other clinical factors.

resultsThe MMP-8, MMP-9, and MPO levels were markedly elevated in the eyes with B-KPro (80 ± 31, 291 ± 77, and 244 ± 33 pg/μg, respectively). Chemical burn was associated with significantly higher tear MMP-8 (474 ± 376 pg/μg) and MMP-9 levels (1300 ± 635 pg/μg) compared with noncicatrizing diseases (MMP-8: 41 ± 15 pg/μg, P = 0.02 and MMP-9: 196 ± 57 pg/μg, P = 0.02) and higher MMP-9 levels compared with autoimmune diseases (MMP-8: 96 ± 65 pg/μg, P = 0.21 and MMP-9: 306 ± 196 pg/μg, P = 0.04). Similar analyte levels were observed in the B-KPro eye and the contralateral non-B-KPro eye of patients with bilateral diseases. MMP-8, MMP-9, and total MMP activities correlated strongly with each other.

conclusionsIn the eyes with B-KPro, tear MMP-8 and MMP-9 levels seem to be related to the underlying ocular surface pathology and not significantly influenced by the presence of the prosthesis.

Indexed as

BioprosthesisAdultAgedAged, 80 and overArtificial OrgansCorneaCorneal DiseasesCross-Sectional StudiesEnzyme-Linked Immunosorbent AssayEye ProteinsFemaleFluorometryHumansMaleMatrix MetalloproteinasesMiddle AgedEye ProteinsMatrix MetalloproteinasesPeroxidasetear proteinsTIMP1 protein, humanTissue Inhibitor of Metalloproteinase-1

Identifiers

PMID27191670
PMCPMC4899168
OpenAlexW2406385796

What OpenQuestion holds

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Registered trials

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.