Evidence map›Paper›PMID 20382857›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2010

Matrix metalloproteinases cleave the beta2-adrenergic receptor in spontaneously hypertensive rats.

Stephen F Rodrigues, Edward D Tran, Zuleica B Fortes, Geert W Schmid-Schönbein

Abstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

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

  1. Pooled it
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  15. IGF-1 receptor cleavage in hypertension.Hypertension research : official journal of the Japanese Society of Hypertension · 2018
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Stephen F RodriguesDepartment of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Edward D Tran
Zuleica B Fortes
Geert W Schmid-Schönbein

Funding

STRUCTURE/FUNCTION OF THE MICROCIRCULATIOMR01HL010881 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SCHMID-SCHOENBEIN, GEERT W. · 1985 to 2011
$3.1M
NHLBI NIH HHS HL-10881NHLBI NIH HHS R01 HL010881
6 · The paper itself

Abstract

We recently observed the enhanced serine and matrix metalloproteinase (MMP) activity in the spontaneously hypertensive rat (SHR) compared with its normotensive Wistar-Kyoto (WKY) rat and the cleavage of membrane receptors in the SHR by MMPs. We demonstrate in vivo that MMP-7 and MMP-9 injection leads to a vasoconstrictor response in microvessels of rats that is blocked by a specific MMP inhibitor (GM-6001, 1 microM). Multiple pathways may be responsible. Since the beta(2)-adrenergic receptor (beta(2)-AR) is susceptible to the action of endogenous MMPs, we hypothesize that MMPs in the plasma of SHRs are able to cleave the extracellular domain of the beta(2)-AR. SHR arterioles respond in an attenuated fashion to beta(2)-AR agonists and antagonists. Aorta and heart muscle of control Wistar rats were exposed for 24 h (37 degrees C) to fresh plasma of male Wistar and WKY rats and SHRs with and without doxycycline (30 microM) and EDTA (10 mM) to reduce MMP activity. The density of extracellular and intracellular domains of beta(2)-AR was determined by immunohistochemistry. The density of the extracellular domain of beta(2)-AR is reduced in aortic endothelial cells and cardiac microvessels of SHRs compared with that of WKY or Wistar rats. Treatment of the aorta and the heart of control Wistar rats with plasma from SHRs, but not from WKY rats, reduced the number of extracellular domains, but not intracellular domains, of beta(2)-AR in aortic endothelial cells and cardiac microvessels. MMP inhibitors (EDTA and doxycycline) prevented the cleavage of the extracellular domain. Thus MMPs may contribute to the reduced density of the extracellular domain of beta(2)-AR in blood vessels and to the increased arteriolar tone of SHRs compared with normotensive rats.

Indexed as

Protein Processing, Post-TranslationalAdrenergic beta-AgonistsAdrenergic beta-AntagonistsAnimalsAortaArteriolesBlood PressureBlotting, WesternCoronary VesselsDisease Models, AnimalHypertensionImmunohistochemistryInfusions, Intra-ArterialMaleMatrix Metalloproteinase 7Matrix Metalloproteinase 9Adrenergic beta-AgonistsAdrenergic beta-AntagonistsMatrix Metalloproteinase 7Matrix Metalloproteinase 9Matrix Metalloproteinase InhibitorsProtease InhibitorsReceptors, Adrenergic, beta-2

Identifiers

PMID20382857
PMCPMC2904131

What OpenQuestion holds

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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.