Evidence map›Paper›PMID 33815836›Full record

ArticleCardiology research and practice2021

Acute Hypobaric and Hypoxic Preconditioning Reduces Myocardial Ischemia-Reperfusion Injury in Rats.

Hirofumi Terada, Naoyuki Hirata, Yasuaki Sawashita, Sho Ohno, Yusuke Yoshikawa, Michiaki Yamakage

Open access · goldAbstract read
In one paragraph

Article in Cardiology research and practice, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 30% 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

4 citing papers in PubMed, 5 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

6 authors at 1 institution in 1 country.

Hirofumi TeradaDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Naoyuki HirataDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.ORCID https://orcid.org/0000-0002-3776-8115
Yasuaki SawashitaDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Sho OhnoDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Yusuke YoshikawaDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Michiaki YamakageDepartment of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Sapporo Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic and/or intermittent exposure to hypobaric hypoxia reportedly exerts cardioprotective effects against ischemia-reperfusion injury. However, few studies have focused on the cardioprotective effects of acute and/or short-term hypobaric and hypoxic exposures. This study investigated the effects of acute hypobaric hypoxia on myocardial ischemia-reperfusion injury. MATERIALS AND

methodsRats were assigned to groups receiving normobaric normoxia (NN group), hypobaric hypoxia (HH group), or normobaric hypoxia (NH group). HH group rats were exposed to 60.8 kPa and 12.6% fraction of inspired oxygen in a hypobaric chamber for 6 h. NH group rats were exposed to hypoxic conditions under normal pressure. After each exposure, 30 min of myocardial ischemia was followed by 60 min of reperfusion. Cardiac function and infarct size were determined after reperfusion. Expression of hypoxia-inducible factor 1 alpha (HIF1

resultsCardiac function was better preserved in the HH and NH groups than in the NN group (

conclusionsExposure to acute and/or short-term hypobaric and hypoxic conditions might exert cardioprotective effects against myocardial ischemia-reperfusion injury via HIF1

Identifiers

PMID33815836
PMCPMC7990552
OpenAlexW3136771727

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Registered trials

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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.