Evidence map›Paper›PMID 22268109›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2012

Biphasic modulation of the mitochondrial electron transport chain in myocardial ischemia and reperfusion.

Hsin-Ling Lee, Chwen-Lih Chen, Steve T Yeh, Jay L Zweier, Yeong-Renn Chen

Abstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.0field-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

42 citing papers in PubMed, 85 citations in OpenAlex.

  1. Article
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  10. Brain Energy Metabolism in Ischemic Stroke: Effects of Smoking and Diabetes.International journal of molecular sciences · 2022
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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

5 authors at 2 institutions in 2 countries.

Hsin-Ling LeeDavis Heart and Lung Research Institute, College of Medicine, Ohio State University, Columbus, USA.
Chwen-Lih Chen
Steve T Yeh
Jay L Zweier
Yeong-Renn Chen
Lung Institute · USNortheast Ohio Medical University · US

Funding

OXYGEN RADICALS AND NITRIC OXIDE IN POSTISCHEMIC INJURYR01HL063744 · NHLBI · OHIO STATE UNIVERSITY · PI ZWEIER, JAY LOUIS · 2000 to 2009
$5.2M
Myocardial Injury Mitochondria/ Oxygen Free Radical(s)R01HL083237 · NHLBI · OHIO STATE UNIVERSITY · PI CHEN, YEONG-RENN · 2006 to 2017
$3.8M
NHLBI NIH HHS HL-63744NHLBI NIH HHS HL-83237NHLBI NIH HHS R01 HL083237
6 · The paper itself

Abstract

Mitochondrial electron transport chain (ETC) is the major source of reactive oxygen species during myocardial ischemia-reperfusion (I/R) injury. Ischemic defect and reperfusion-induced injury to ETC are critical in the disease pathogenesis of postischemic heart. The properties of ETC were investigated in an isolated heart model of global I/R. Rat hearts were subjected to ischemia for 30 min followed by reperfusion for 1 h. Studies of mitochondrial function indicated a biphasic modulation of electron transfer activity (ETA) and ETC protein expression during I/R. Analysis of ETAs in the isolated mitochondria indicated that complexes I, II, III, and IV activities were diminished after 30 min of ischemia but increased upon restoration of flow. Immunoblotting analysis and ultrastructural analysis with transmission electron microscopy further revealed marked downregulation of ETC in the ischemic heart and then upregulation of ETC upon reperfusion. No significant difference in the mRNA expression level of ETC was detected between ischemic and postischemic hearts. However, reperfusion-induced ETC biosynthesis in myocardium can be inhibited by cycloheximide, indicating the involvement of translational control. Immunoblotting analysis of tissue homogenates revealed a similar profile in peroxisome proliferator-activated receptor-γ coactivator-1α expression, suggesting its essential role as an upstream regulator in controlling ETC biosynthesis during I/R. Significant impairment caused by ischemic and postischemic injury was observed in the complexes I- III. Analysis of NADH ferricyanide reductase activity indicated that injury of flavoprotein subcomplex accounts for 50% decline of intact complex I activity from ischemic heart. Taken together, our findings provide a new insight into the molecular mechanism of I/R-induced mitochondrial dysfunction.

Indexed as

Adenosine DiphosphateAnimalsBlood PressureBlotting, WesternCoronary CirculationCycloheximideElectron TransportElectron Transport Complex IIIFree RadicalsHeart RateIn Vitro TechniquesMaleMicroscopy, Electron, TransmissionMitochondria, HeartMyocardial IschemiaMyocardial Reperfusion InjuryAdenosine DiphosphateCycloheximideElectron Transport Complex IIIFree RadicalsNADH DehydrogenaseProtein Synthesis InhibitorsRNA, Messenger

Identifiers

PMID22268109
PMCPMC3330792
OpenAlexW2097133939

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.