Evidence map›Paper›PMID 31641226›Full record

ArticleLaboratory investigation; a journal of technical methods and pathology2020

Temperature elevation in epileptogenic foci exacerbates epileptic discharge through TRPV4 activation.

Koji Shibasaki, Katsuya Yamada, Hideki Miwa, Yuchio Yanagawa, Michiyasu Suzuki, Makoto Tominaga, Yasuki Ishizaki

Abstract read
PubMed Publisher
In one paragraph

Article in Laboratory investigation; a journal of technical methods and pathology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.1field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Review
  8. TRPM3, TRPM4, and TRPM5 as thermo-sensitive channels.The journal of physiological sciences : JPS · 2024
    Review
  9. Review
  10. Astrocytic TRPV4 Channels and Their Role in Brain Ischemia.International journal of molecular sciences · 2023
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Inhibition of Transient Receptor Potential Vanilloid 4 (TRPV4) Mitigates Seizures.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2022
    Article
  16. Article
  17. Article
  18. Review
  19. TRPV4 activation by thermal and mechanical stimuli in disease progression.Laboratory investigation; a journal of technical methods and pathology · 2020
    Review
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

7 authors at 4 institutions in 1 country.

Koji ShibasakiDepartment of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan. kshibasaki@sun.ac.jp.ORCID http://orcid.org/0000-0003-2330-1749
Katsuya YamadaDepartment of Physiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan.
Hideki MiwaDepartment of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
Yuchio YanagawaDepartment of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
Michiyasu SuzukiDepartment of Neurosurgery, Yamaguchi University Graduate School of Medicine, Ube, 755-8505, Japan.
Makoto TominagaThermal Biology Group, Exploratory Research Center on Life and Living Systems, Okazaki, 444-8787, Japan.
Yasuki IshizakiDepartment of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
Gunma University · JPHirosaki University · JPNational Institutes of Natural Sciences · JPYamaguchi University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Physiological brain temperature is an important determinant of brain function, and it is well established that changes in brain temperature dynamically influence hippocampal neuronal activity. We previously demonstrated that the thermosensor TRPV4 is activated at physiological brain temperature in hippocampal neurons thereby controlling neuronal excitability in vitro. Here, we examined whether TRPV4 regulates neuronal excitability through its activation by brain temperature in vivo. We locally cooled the hippocampus using our novel electrical device and demonstrated constitutive TRPV4 activation in normal mouse brain. We generated a model of partial epilepsy by utilizing kindling stimuli in the ventral hippocampus of wild type (WT) or TRPV4-deficient (TRPV4KO) mice and obtained electroencephalograms (EEG). The frequencies of epileptic EEG in WT mice were significantly larger than those in TRPV4KO mice. These results indicate that TRPV4 activation is involved in disease progression of epilepsy. We expected that disease progression would enhance hyperexcitability and lead to hyperthermia in the epileptogenic foci. To confirm this hypothesis, we developed a new device to measure exact brain temperature only in a restricted local area. From the recording results by the new device, we found that the brain temperatures in epileptogenic zones were dramatically elevated compared with normal regions. Furthermore, we demonstrated that the temperature elevation was critical for disease progression. Based on these results, we speculate that brain cooling treatment at epileptogenic foci would effectively suppress epileptic discharges through inhibition of TRPV4. Notably, the cooling treatment drastically suppressed neuronal discharges dependent on the inactivation of TRPV4.

Indexed as

EpilepsyFeverTRPV Cation ChannelsAnimalsBody TemperatureDentate GyrusDisease Models, AnimalElectroencephalographyMaleMiceMice, KnockoutTrpv4 protein, mouseTRPV Cation Channels

Identifiers

PMID31641226
OpenAlexW2981861537

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.