Evidence map›Paper›PMID 22859525›Full record

ArticleAmerican journal of respiratory and critical care medicine2012

Dysregulated renin-angiotensin-aldosterone system contributes to pulmonary arterial hypertension.

Frances S de Man, Ly Tu, M Louis Handoko, Silvia Rain, Gerrina Ruiter, Charlène François, Ingrid Schalij, Peter Dorfmüller, Gérald Simonneau, Elie Fadel and 8 more

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In one paragraph

Article in American journal of respiratory and critical care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 170 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
170citing papers in PubMed, 1 pooled it
23.4field-weighted citation impact, top 1% 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

170 citing papers in PubMed, 1 synthesis or guideline pooled it, 339 citations in OpenAlex.

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  13. The renin-angiotensin system in models of pulmonary arterial hypertension vs primary hypertension.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
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110 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

18 authors at 2 institutions in 2 countries.

Frances S de ManVU University Medical Center, Department of Pulmonology, De Boelelaan 1117, Amsterdam, The Netherlands. fs.deman@vumc.nl
Ly Tu
M Louis Handoko
Silvia Rain
Gerrina Ruiter
Charlène François
Ingrid Schalij
Peter Dorfmüller
Gérald Simonneau
Elie Fadel
Frederic Perros
Anco Boonstra
Piet E Postmus
Jolanda van der Velden
Anton Vonk-Noordegraaf
Marc Humbert
Saadia Eddahibi
Christophe Guignabert
Université Paris-Sud · FRAmsterdam UMC Location Vrije Universiteit Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationalePatients with idiopathic pulmonary arterial hypertension (iPAH) often have a low cardiac output. To compensate, neurohormonal systems such as the renin-angiotensin-aldosterone system (RAAS) and the sympathetic nervous system are up-regulated, but this may have long-term negative effects on the progression of iPAH.

objectivesAssess systemic and pulmonary RAAS activity in patients with iPAH and determine the efficacy of chronic RAAS inhibition in experimental PAH.

methodsWe collected 79 blood samples from 58 patients with iPAH in the VU University Medical Center Amsterdam (between 2004 and 2010) to determine systemic RAAS activity. MEASUREMENTS AND MAIN

resultsWe observed increased levels of renin, angiotensin (Ang)I, and AngII, which were associated with disease progression (P < 0.05) and mortality (P < 0.05). To determine pulmonary RAAS activity, lung specimens were obtained from patients with iPAH (during lung transplantation, n = 13) and control subjects (during lobectomy or pneumonectomy for cancer, n = 14). Local RAAS activity in pulmonary arteries of patients with iPAH was increased, demonstrated by elevated angiotensin-converting enzyme activity in pulmonary endothelial cells and increased AngII type 1 (AT(1)) receptor expression and signaling. In addition, local RAAS up-regulation was associated with increased pulmonary artery smooth muscle cell proliferation via enhanced AT(1) receptor signaling in patients with iPAH compared with control subjects. Finally, to determine the therapeutic potential of RAAS activity, we assessed the chronic effects of an AT(1) receptor antagonist (losartan) in the monocrotaline PAH rat model (60 mg/kg). Losartan delayed disease progression, decreased right ventricular afterload and pulmonary vascular remodeling, and restored right ventricular-arterial coupling in rats with PAH.

conclusionsSystemic and pulmonary RAAS activities are increased in patients with iPAH and are associated with increased pulmonary vascular remodeling. Chronic inhibition of RAAS by losartan is beneficial in experimental PAH.

Indexed as

Disease ProgressionRenin-Angiotensin SystemUp-RegulationAngiotensin II Type 1 Receptor BlockersAnimalsCase-Control StudiesCells, CulturedEndothelium, VascularFamilial Primary Pulmonary HypertensionFemaleHumansHypertension, PulmonaryLosartanMaleMiddle AgedMonocrotalineAngiotensin II Type 1 Receptor BlockersLosartanMonocrotalineReceptor, Angiotensin, Type 1

Identifiers

PMID22859525
PMCPMC5104838
OpenAlexW2156240908

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.