Evidence map›Paper›PMID 20009085›Full record

ArticleDiabetes2010

Increased vitreous shedding of microparticles in proliferative diabetic retinopathy stimulates endothelial proliferation.

Sadri Chahed, Aurélie S Leroyer, Mounir Benzerroug, David Gaucher, Adriana Georgescu, Serge Picaud, Jean-Sébastien Silvestre, Alain Gaudric, Alain Tedgui, Pascale Massin and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Diabetes, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.7field-weighted citation impact, top 6% 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

27 citing papers in PubMed, 74 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

11 authors at 5 institutions in 2 countries.

Sadri ChahedParis-Cardiovascular Research Centre, Inserm U970, Paris, France.
Aurélie S Leroyer
Mounir Benzerroug
David Gaucher
Adriana Georgescu
Serge Picaud
Jean-Sébastien Silvestre
Alain Gaudric
Alain Tedgui
Pascale Massin
Chantal M Boulanger
Paris Cardiovascular Research Center · FRAssistance Publique – Hôpitaux de Paris · FRInserm · FRHôpital Lariboisière · FRNational Institute of Research and Development for Biological Sciences · RO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDiabetic retinopathy is associated with progressive retinal capillary activation and proliferation, leading to vision impairment and blindness. Microparticles are submicron membrane vesicles with biological activities, released following cell activation or apoptosis. We tested the hypothesis that proangiogenic microparticles accumulate in vitreous fluid in diabetic retinopathy. RESEARCH DESIGN AND

methodsLevels and cellular origin of vitreous and plasma microparticles from control (n = 26) and diabetic (n = 104) patients were analyzed by flow cytometry, and their proangiogenic activity was assessed by in vitro thymidine incorporation and neovessel formation in subcutaneous Matrigel plugs in mice.

resultsMicroparticles of endothelial, platelet, photoreceptor, and microglial origin were identified in vitreous samples. Levels of photoreceptor and microglial microparticles were undetectable in plasmas but were comparable in diabetic and control vitreous samples. Vitreous platelet and endothelial microparticles levels were increased in diabetic patients and decreased following panretinal laser photocoagulation or intravitreal antivascular endothelial growth factor injection in proliferative diabetic retinopathy (PDR). The ratio of vitreous to plasma microparticle levels was calculated to estimate local formation versus potential plasma leakage. In PDR, the endothelial microparticles ratio--but not that for platelet--was greater than 1.0, indicating local formation of endothelial microparticles from retinal vessels and permeation of platelet microparticles from plasma. Isolated vitreous microparticles stimulated by 1.6-fold endothelial proliferation and increased new vessel formation in mice.

conclusionsThe present study demonstrates that vitreous fluid contains shed membrane microparticles of endothelial, platelet, and retinal origin. Vitreous microparticles levels are increased in patients with diabetic retinopathy, where they could contribute to disease progression.

Indexed as

AgedAnimalsBlood PlateletsCell DivisionCollagenDiabetic RetinopathyDisease ProgressionDrug CombinationsEndothelial CellsFemaleFlow CytometryHumansLamininLight CoagulationMaleMiceCollagenDrug CombinationsLamininmatrigelProteoglycans

Identifiers

PMID20009085
PMCPMC2828666
OpenAlexW1976254642

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.