Evidence map›Paper›PMID 33057165›Full record

ArticleScientific reports2020

The protective role of proton-sensing TDAG8 in the brain injury in a mouse ischemia reperfusion model.

Koichi Sato, Ayaka Tobo, Chihiro Mogi, Masayuki Tobo, Nobuhiro Yamane, Masahiko Tosaka, Hideaki Tomura, Dong-Soon Im, Fumikazu Okajima

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
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

11 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Recent advances in acid sensing by G protein coupled receptors.Pflugers Archiv : European journal of physiology · 2024
    Review
  5. Article
  6. Article
  7. Review
  8. pH and proton-sensitive receptors in brain ischemia.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  9. Review
  10. RNA-Seq analysis of knocking out the neuroprotective proton-sensitive GPR68 on basal and acute ischemia-induced transcriptome changes and signaling in mouse brain.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  11. Article
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

9 authors.

Koichi SatoLaboratory of Signal Transduction, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, 371-8512, Japan. kosato@gunma-u.ac.jp.ORCID 0000-0001-7694-4014
Ayaka ToboLaboratory of Signal Transduction, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, 371-8512, Japan.
Chihiro MogiLaboratory of Signal Transduction, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, 371-8512, Japan.
Masayuki ToboLaboratory of Signal Transduction, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, 371-8512, Japan.
Nobuhiro YamaneDepartment of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
Masahiko TosakaDepartment of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
Hideaki TomuraLaboratory of Cell Signaling Regulation, Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, 214-8571, Japan.
Dong-Soon ImCollege of Pharmacy, Kyung Hee University, Seoul, 02447, Republic of Korea.
Fumikazu OkajimaLaboratory of Signal Transduction, Faculty of Pharmaceutical Sciences, Aomori University, Aomori, 030-0943, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extracellular acidification in the brain has been observed in ischemia; however, the physiological and pathophysiological implications of the pH reduction remain largely unknown. Here, we analyzed the roles of proton-sensing G protein-coupled receptors, including T-cell death-associated gene 8 (TDAG8), ovarian cancer G protein-coupled receptor 1 (OGR1), and G protein-coupled receptor 4 (GPR4) in a mouse ischemia reperfusion model. Cerebral infarction and dysfunctional behavior with transient middle cerebral artery occlusion (tMCAO) and subsequent reperfusion were exacerbated by the deficiency of TDAG8, whereas no significant effect was observed with the deficiency of OGR1 or GPR4. We confirmed that the pH of the predicted infarction region was 6.5. TDAG8 mRNA was observed in Iba1-positive microglia in the mouse brain. The tMCAO increased the mRNA expression of tumor necrosis factor-α in the ipsilateral cerebral hemisphere and evoked morphological changes in microglia in an evolving cerebral injury. These tMCAO-induced actions were significantly enhanced by the TDAG8 deficiency. Administration of minocycline, which is known to inhibit microglial activation, improved the cerebral infarction and dysfunctional behavior induced by tMCAO in the TDAG8-deficient mouse. Thus, acidic pH/TDAG8 protects against cerebral infarction caused by tMCAO, at least due to the mechanism involving the inhibition of microglial functions.

Indexed as

AnimalsBrain InjuriesBrain IschemiaDisease Models, AnimalHydrogen-Ion ConcentrationInfarction, Middle Cerebral ArteryMaleMiceMice, Inbred C57BLMicrogliaProtective AgentsProtonsReceptors, G-Protein-CoupledReperfusionSignal TransductionGPR65 protein, mouseProtective AgentsProtonsReceptors, G-Protein-Coupled

Identifiers

PMID33057165
PMCPMC7566628

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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.