Evidence map›Paper›PMID 25479030›Full record

SynthesisJournal of hypertension2015

The impact of age on vascular smooth muscle function in humans.

David Montero, Gary L Pierce, Coen D A Stehouwer, Jaume Padilla, Dick H J Thijssen

Open access · greenAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in Journal of hypertension, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.2field-weighted citation impact, top 18% 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

15 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Hemodynamic characteristics and early warnings in very old patients.American journal of translational research · 2021
    Review
  10. Observational
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
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 5 institutions in 3 countries.

David MonteroaDepartment of Internal Medicine, Maastricht University Medical Centre (MUMC) and Cardiovascular Research Institute Maastricht (CARIM), Maastricht, the Netherlands bDepartment of Health and Human Physiology, University of Iowa, Iowa City, Iowa cDepartment of Nutrition and Exercise Physiology dDepartment of Child Health eDalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA fDepartment of Physiology, Radboud University Medical Center, Nijmegen, the Netherlands gResearch Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, UK.
Gary L Pierce
Coen D A Stehouwer
Jaume Padilla
Dick H J Thijssen
GTx (United States) · USLiverpool John Moores University · GBMaastricht University Medical Centre · NLUniversity of Iowa · USUniversity of Missouri · US

Funding

Pulmonary Toxicology Facility CoreP30ES005605 · NIEHS · UNIVERSITY OF IOWA · PI Brandi Janssen · 1990 to 2026
$40.5M
VASOPRESSIN IN CARDIOVASCULAR REGULATIONP01HL014388 · NHLBI · UNIVERSITY OF IOWA · PI ABBOUD, FRANCOIS M · 1985 to 2018
$40.3M
Targeting Inflammation to Treat Cardiovascular Aging in HumansR21AG043722 · NIA · UNIVERSITY OF IOWA · PI PIERCE, GARY L. · 2013 to 2014
$415k
NHLBI NIH HHS P01 HL014388NIA NIH HHS AG043722-01NIA NIH HHS R21 AG043722NIEHS NIH HHS P30 ES005605
6 · The paper itself

Abstract

aimAdvanced age is associated with vascular endothelial dysfunction, characterized by reductions in the endothelium-dependent vasodilation of the conduit and resistance arteries, in part, from decreased nitric oxide bioavailability. Although vascular smooth muscle function (SMF), assessed by responsiveness to an exogenous nitric oxide donor, is typically reported to be intact, many of these studies are limited by a small sample size. Therefore, the purpose of this meta-analysis is to systematically review and determine whether vascular SMF is different between older versus young healthy individuals.

designWe conducted a systematic search of MEDLINE, Cochrane and Scopus, since their inceptions until January 2014, for articles evaluating SMF in the brachial artery and/or resistance arteries (BASMF and RASMF, respectively), as assessed by the endothelium-independent vasodilator response to exogenous nitric oxide donors in older (≥60 years) and young (<30 years) groups of healthy individuals. Meta-analyses were performed to compare the mean difference in BASMF and the standardized mean difference in RASMF between older and young groups. Subgroup analyses were performed to identify sources of heterogeneity.

resultsFifteen studies assessing BASMF and 20 studies assessing RASMF were included, comprising 550 older and 516 young healthy individuals. After data pooling, BASMF and RASMF were lower in older compared with the young groups (mean difference = -1.89%, P = 0.04; standardized mean difference = -0.46, P = 0.0008, respectively). Significant heterogeneity was observed in the BASMF (I2 = 74%, P < 0.00001) and the RASMF (I2 = 57%, P = 0.0008) meta-analyses. Subgroup analyses revealed that studies with (predominantly) men showed similar SMF responses between the older and the young groups.

conclusionOn the basis of the current published studies, vascular SMF is reduced in conduit and resistance arteries of otherwise healthy older individuals, particularly in women.

Indexed as

AgingBrachial ArteryHumansMuscle, Smooth, VascularNitric OxideNitric Oxide DonorsVasodilationVasodilator AgentsNitric OxideNitric Oxide DonorsVasodilator Agents

Identifiers

PMID25479030
PMCPMC4670263
OpenAlexW2335569783

What OpenQuestion holds

Textmetadata
LicenceTDM
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.