Evidence map›Paper›PMID 34403016›Full record

ArticleCardiovascular drugs and therapy2023

Aspirin Blocks the Infarct-Size Limiting Effect of Ischemic Postconditioning in the Rat.

Yochai Birnbaum, Regina Ye, Yumei Ye

Abstract read
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In one paragraph

Article in Cardiovascular drugs and therapy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.5field-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

6 citing papers in PubMed, 10 citations in OpenAlex.

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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

3 authors at 3 institutions in 1 country.

Yochai BirnbaumThe Section of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.ORCID 0000-0001-7653-6328
Regina YeUniversity of Texas At Austin, Austin, TX, USA.
Yumei YeThe Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, 301 University Blvd, BSB 648, Galveston, TX, 77555, USA. yumye@utmb.edu.
Baylor College of Medicine · USThe University of Texas at Austin · USThe University of Texas Medical Branch at Galveston · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIschemic postconditioning (PostC), repetitive cycles of re-occlusion, and reperfusion of the infarct-related artery immediately after reperfusion have been shown to limit myocardial infarct size in various animal models. Yet, translating the model into the clinical setting was disappointing, several clinical trials showing neutral effect. We hypothesized that aspirin loading could explain the differences between the pre-clinical and clinical studies.

methodsMale Sprague Dawley rats were subjected to 30-min coronary artery ligation. At 25 min of ischemia, animals received intravenous aspirin (20 mg/kg) or vehicle. Upon reperfusion half of the rats were randomized to PostC (3 cycles of 10-s re-occlusion/10-s reperfusion. After 4-h reperfusion, rats were euthanized. Area at risk was assessed by blue dye and infarct size by 2,3,5-triphenyl-tetrazolium-chloride (TTC).

resultsBody weight and the size of the ischemic area at risk were comparable among groups. Infarct size expressed as a percentage of the ischemic area at risk was significantly smaller in the PostC group (13.9 ± 0.4%; p < 0.001) compared to the control group (31.0 ± 2.2%). Aspirin alone had no effect on infarct size (29.0 ± 2.6%). Yet, aspirin completely blocked the protective effect of PostC (33.3 ± 1.1%).

conclusionsAspirin, administered before reperfusion, blocks the infarct size limiting effects of PostC in the rat.

Indexed as

Ischemic PostconditioningMyocardial InfarctionMyocardial Reperfusion InjuryAnimalsAspirinIschemiaMaleRatsRats, Sprague-DawleyAspirinAspirinHeartInfarct sizePostconditioningReperfusion injury

Identifiers

PMID34403016
OpenAlexW3195781405

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.