Evidence map›Paper›PMID 16880766›Full record

ArticleBritish journal of pharmacology2006

Matrix metalloproteinases contribute to endotoxin and interleukin-1beta induced vascular dysfunction.

M M Lalu, J Cena, R Chowdhury, A Lam, R Schulz

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Pooled it
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  5. Intersection between gonadal function and vascular aging in women.Journal of applied physiology (Bethesda, Md. : 1985) · 2018
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  12. Matrix metalloproteinases cleave the beta2-adrenergic receptor in spontaneously hypertensive rats.American journal of physiology. Heart and circulatory physiology · 2010
    Article
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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

5 authors at 1 institution in 1 country.

M M LaluDepartment of Pharmacology, Cardiovascular Research Group, Perinatal Research Centre, University of Alberta, Edmonton, Alberta, Canada.
J Cena
R Chowdhury
A Lam
R Schulz
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe acute vascular inflammatory dysfunction associated with endotoxaemia may reflect an imbalance between matrix metalloproteinases (MMPs) and their natural inhibitors (TIMPs), induced by the endotoxin. This possibility was tested in rat aortic tissue. EXPERIMENTAL APPROACHES: Tone induced by phenylephrine in aortic rings was measured after exposure in vitro to ambient lipopolysaccharide (LPS) or the proinflammatory cytokine interleukin-1beta (IL-1beta) for 6h, with or without MMP inhibitors (doxycycline or GM6001). Gelatinase and MMP activities, TIMP proteins and contractility were measured in aortae taken from rats 6h after receiving LPS in vivo. KEY

resultsInhibition of MMP prevented the loss of phenylephrine-induced tone in aortic rings after LPS or IL-1beta. IL-1beta also increased release of MMP-2 activity from aortic tissue. In aortae exposed in vivo to LPS, net gelatinase, MMP-9 activities and TIMP-1 protein levels were increased, whereas TIMP-4 was reduced. These aortae were hypocontractile to both phenylephrine and KCl. Hypocontractility was partially reversed by doxycycline ex vivo. CONCLUSIONS AND IMPLICATIONS: MMP inhibitors ameliorate vascular hyporeactivity induced by either LPS or IL-1beta in vitro. LPS in vivo alters the balance between MMPs and TIMPs, contributing to vascular dysfunction which is partially reversed by MMP inhibitors. Vascular MMPs are activated as a result of LPS or IL-1beta-induced stress and contribute to the hyporeactivity of blood vessels to vasoconstrictors.

Indexed as

AnimalsAorta, ThoracicBlotting, WesternCollagenasesEndotoxemiaEndotoxinsGelatinasesInterleukin-1In Vitro TechniquesMaleMatrix MetalloproteinasesMuscle ContractionMuscle ProteinsMuscle, Smooth, VascularMuscle TonusNitratesCollagenasesEndotoxinsGelatinasesInterleukin-1Matrix MetalloproteinasesMuscle ProteinsNitratesNitritesPhenylephrineTissue Inhibitor of Metalloproteinase-1Tissue Inhibitor of Metalloproteinase-4Tissue Inhibitor of MetalloproteinasesVasoconstrictor Agents

Identifiers

PMID16880766
PMCPMC1629401
OpenAlexW2052636469

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.