Evidence map›Paper›PMID 23129587›Full record

ArticleCardiovascular research2013

Neutrophil TRPM2 channels are implicated in the exacerbation of myocardial ischaemia/reperfusion injury.

Toshihito Hiroi, Teruaki Wajima, Takaharu Negoro, Masakazu Ishii, Yasuko Nakano, Yuji Kiuchi, Yasuo Mori, Shunichi Shimizu

Abstract read
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In one paragraph

Article in Cardiovascular research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 117 citations in OpenAlex.

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  9. [Advances in the development of transient receptor potential melastatin 2 channel inhibitors].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Toshihito HiroiDepartment of Pathophysiology, Showa University School of Pharmacy, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
Teruaki Wajima
Takaharu Negoro
Masakazu Ishii
Yasuko Nakano
Yuji Kiuchi
Yasuo Mori
Shunichi Shimizu
Showa University · JPKyoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsTransient receptor potential melastatin 2 (TRPM2) highly expressed in immunocytes is a Ca(2+)-permeable non-selective cation channel activated by oxidative stress. Myocardial ischaemia/reperfusion (I/R) injury is characterized by acute inflammation associated with the augmentation of oxidative stress. We hypothesized that TRPM2 is implicated in the exacerbation of myocardial I/R injury. METHODS AND

resultsWild-type (Trpm2(+/+)) and Trpm2 knockout (Trpm2(-/-)) mice were subjected to ligation of the left main coronary artery followed by reperfusion. Myocardial infarction following I/R, but not ischaemia alone, was reduced more in Trpm2(-/-)mice than in Trpm2(+/+) mice and cardiac contractile functions were also improved in Trpm2(-/-)mice. TRPM2 was highly expressed in the polymorphonuclear leucocytes (PMNs) rather than in the heart. The number of neutrophils and myeloperoxidase (MPO) activity in the reperfused area following ischaemia was lowered in Trpm2(-/-) mice. When Trpm2(+)(/+) or Trpm2(-/-) PMNs were administered to the Trpm2(-/-) heart ex vivo through the perfusate or in vivo by iv injection, Trpm2(+)(/+) PMNs produced enlargement of the infarct size. Following in vitro regional I/R, a pharmacological inhibitor of TRPM2 reduced the infarct size. The combination of H(2)O(2) and leukotriene B(4) (LTB(4)) increased intracellular Ca(2+) concentration and their adhesion to endothelial cells in Trpm2(+)(/+) but not in Trpm2(-/-)PMNs.

conclusionThese findings indicate that neutrophil TRPM2 is implicated in the exacerbation of myocardial reperfusion injury. Accumulation of neutrophils in the reperfused area mediated by TRPM2 activation is likely to play a crucial role in myocardial I/R injury.

Indexed as

AnimalsCalciumCell MovementHydrogen PeroxideLeukotriene B4MaleMiceMice, Inbred C57BLMyocardial InfarctionMyocardial Reperfusion InjuryNeutrophilsTRPM Cation ChannelsVentricular Function, LeftCalciumHydrogen PeroxideLeukotriene B4TRPM2 protein, mouseTRPM Cation Channels

Identifiers

PMID23129587
OpenAlexW2024093325

What OpenQuestion holds

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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.