Evidence map›Paper›PMID 21423294›Full record

ArticleCanadian journal of physiology and pharmacology2011

Regulation of L-type inward calcium channel activity by captopril and angiotensin II via the phosphatidyl inositol 3-kinase pathway in cardiomyocytes from volume-overload hypertrophied rat hearts.

Zikiar Alvin, Graham G Laurence, Bernell R Coleman, Aiqiu Zhao, Majd Hajj-Moussa, Georges E Haddad

Open access · greenAbstract readComparative Study
In one paragraph

Article in Canadian journal of physiology and pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.1field-weighted citation impact, top 12% 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, 31 citations in OpenAlex.

  1. Review
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  9. Anaphylatoxins Activate CaFrontiers in immunology · 2017
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  16. Inotropic and lusitropic effects of calcitonin gene-related peptide in the heart.American journal of physiology. Heart and circulatory physiology · 2013
    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

6 authors at 1 institution in 2 countries.

Zikiar AlvinDepartment of Physiology and Biophysics, College of Medicine, Howard University, WA 20059, USA.
Graham G Laurence
Bernell R Coleman
Aiqiu Zhao
Majd Hajj-Moussa
Georges E Haddad
Howard University · US

Funding

STRUCTURAL/FUNCTIONAL CHARACTERIZATION OF AMINOGLYCOSIDEG12RR003048 · NCRR · HOWARD UNIVERSITY · PI SOUTHERLAND, WILLIAM M. · 1985 to 2011
$19.0M
The Howard University SCORE Program Supplemental GrantS06GM008016 · NIGMS · HOWARD UNIVERSITY · PI NELSON, KAREN ELIZABETH · 1989 to 2009
$16.1M
NCRR NIH HHS 2G12 RR003048NCRR NIH HHS G12 RR003048NIGMS NIH HHS GM08016-38NIGMS NIH HHS S06 GM008016
6 · The paper itself

Abstract

Heart failure can be caused by pro-hypertrophic humoral factors such as angiotensin II (Ang II), which regulates protein kinase activities. The intermingled responses of these kinases lead to the early compensated cardiac hypertrophy, but later to the uncompensated phase of heart failure. We have shown that although beneficial, cardiac hypertrophy is associated with modifications in ion channels that are mainly mediated through mitogen-activated protein (MAP) kinase and phosphatidylinositol 3-kinase (PI3K) activation. This study evaluates the control of L-type Ca(2+) current (I(Ca,L)) by the Ang II/PI3K pathway in hypertrophied ventricular myocytes from volume-overload rats using the perforated patch-clamp technique. To assess activation of the I(Ca,L) in cardiomyocytes, voltages of 350 ms in 10 mV increments from a holding potential of -85 mV were applied to cardiocytes, with a pre-pulse to -45 mV for 300 ms. Volume overload-induced hypertrophy reduces I(Ca,L), whereas addition of Ang II alleviates the hypertrophic-induced decrease in a PI3K-dependent manner. Acute administration of Ang II (10(-6) mol/L) to normal adult cardiomyocytes had no effect; however, captopril reduced their basal I(Ca,L). In parallel, captopril regressed the hypertrophy and inverted the Ang II effect on I(Ca,L) seemingly through a PI3K upstream effector. Thus, it seems that regression of cardiac hypertrophy by captopril improved I(Ca,L) partly through PI3K.

Indexed as

Angiotensin IIAnimalsCalcium Channels, L-TypeCaptoprilCardiomegalyMaleMyocytes, CardiacPhosphatidylinositol 3-KinasePhosphoinositide-3 Kinase InhibitorsRatsRats, Sprague-DawleySignal TransductionAngiotensin IICalcium Channels, L-TypeCaptoprilPhosphatidylinositol 3-KinasePhosphoinositide-3 Kinase Inhibitors

Identifiers

PMID21423294
PMCPMC3086391
OpenAlexW2150296718

What OpenQuestion holds

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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.