Evidence map›Paper›PMID 20675568›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2010

20-HETE increases NADPH oxidase-derived ROS production and stimulates the L-type Ca2+ channel via a PKC-dependent mechanism in cardiomyocytes.

Qinghua Zeng, Yong Han, Yuyan Bao, Wei Li, Xingting Li, Xin Shen, Xu Wang, Fanrong Yao, Stephen T O'Rourke, Chengwen Sun

Open access · greenAbstract 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 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

37 citing papers in PubMed, 60 citations in OpenAlex.

  1. Cytochrome P450-derived metabolites of docosahexaenoic acid or arachidonic acid enhance contractility of cultured rat cardiomyocytes: a pilot study.Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs · 2026
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  3. The machinery of healthy vasoconstriction: an overview.Pflugers Archiv : European journal of physiology · 2025
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  15. GPR75 receptor mediates 20-HETE-signaling and metastatic features of androgen-insensitive prostate cancer cells.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2020
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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

10 authors at 2 institutions in 2 countries.

Qinghua ZengLaboratory of Molecular and Cellular Physiology, School of Life Sciences, Northeast Normal University, Changchun, Jilin, China. ZengQH707@gmail.com
Yong Han
Yuyan Bao
Wei Li
Xingting Li
Xin Shen
Xu Wang
Fanrong Yao
Stephen T O'Rourke
Chengwen Sun
Northeast Normal University · CNNorth Dakota State University · US

Funding

TARGETING AND DELIVERYP20RR015566 · NCRR · NORTH DAKOTA STATE UNIVERSITY · PI DORSAM, GLENN PAUL · 2001 to 2011
$19.0M
Pilot Projects: Core DP30GM103332 · NIGMS · NORTH DAKOTA STATE UNIVERSITY · PI SIBI, MUKUND P. · 2012 to 2016
$4.9M
NCRR NIH HHS 2P20-RR-015566NCRR NIH HHS P20 RR015566NIGMS NIH HHS P30 GM103332
6 · The paper itself

Abstract

The production of 20-hydroxyeicosatetraenoic acid (20-HETE) is increased during ischemia-reperfusion, and inhibition of 20-HETE production has been shown to reduce infarct size caused by ischemia. This study was aimed to discover the molecular mechanism underlying the action of 20-HETE in cardiac myocytes. The effect of 20-HETE on L-type Ca(2+) currents (I(Ca,L)) was examined in rat isolated cardiomyocytes by patch-clamp recording in the whole cell mode. Superfusion of cardiomyocytes with 20-HETE (10-100 nM) resulted in a concentration-dependent increase in I(Ca,L), and this action of 20-HETE was attenuated by a specific NADPH oxidase inhibitor, gp91ds-tat (5 μM), or a superoxide scavenger, polyethylene glycol-superoxide dismutase (25 U/ml), suggesting that NADPH-oxidase-derived superoxide is involved in the stimulatory action of 20-HETE on I(Ca,L). Treatment of cardiomyocytes with 20-HETE (100 nM) increased both NADPH oxidase activity and superoxide production by approximately twofold. To study the molecular mechanism mediating the 20-HETE-induced increase in NADPH oxidase activity, PKC activity was measured in cardiomyocytes. Incubation of the cells with 20-HETE (100 nM) significantly increased PKC activity, and pretreatment of cardiomyocytes with a selective PKC inhibitor, GF-109203 (1 μM), attenuated the 20-HETE-induced increases in I(Ca,L) and in NADPH oxidase activity. In summary, 20-HETE stimulates NADPH oxidase-derived superoxide production, which activates L-type Ca(2+) channels via a PKC-dependent mechanism in cardiomyocytes. 20-HETE and 20-HETE-producing enzymes could be novel targets for the treatment of cardiac ischemic diseases.

Indexed as

AnimalsCalcium Channels, L-TypeElectrophysiological PhenomenaHeart VentriclesHydroxyeicosatetraenoic AcidsMaleModels, AnimalMyocytes, CardiacNADPH OxidasesPatch-Clamp TechniquesProtein Kinase CRatsRats, Sprague-DawleyReactive Oxygen SpeciesSignal TransductionSuperoxides20-hydroxy-5,8,11,14-eicosatetraenoic acidCalcium Channels, L-TypeHydroxyeicosatetraenoic AcidsNADPH OxidasesProtein Kinase CReactive Oxygen SpeciesSuperoxides

Identifiers

PMID20675568
PMCPMC2957347
OpenAlexW2119252648

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.