Evidence map›Paper›PMID 17541403›Full record

ArticleThe EMBO journal2007

Truncations of amphiphysin I by calpain inhibit vesicle endocytosis during neural hyperexcitation.

Yumei Wu, Shuang Liang, Yoshiya Oda, Iori Ohmori, Tei-ichi Nishiki, Kohji Takei, Hideki Matsui, Kazuhito Tomizawa

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
0.5field-weighted citation impact, top 37% 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

22 citing papers in PubMed, 27 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Putting a brake on synaptic vesicle endocytosis.Cellular and molecular life sciences : CMLS · 2017
    Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Targeting calpain in synaptic plasticity.Expert opinion on therapeutic targets · 2013
    Review
  14. Article
  15. Calcium, calpain, and calcineurin in low-frequency depression of transmitter release.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

8 authors at 2 institutions in 1 country.

Yumei WuDepartment of Physiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Shikata-cho 2-5-1, Okayama 700-8558, Japan.
Shuang Liang
Yoshiya Oda
Iori Ohmori
Tei-ichi Nishiki
Kohji Takei
Hideki Matsui
Kazuhito Tomizawa
Okayama University · JPEisai (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Under normal physiological conditions, synaptic vesicle endocytosis is regulated by phosphorylation and Ca(2+)-dependent dephosphorylation of endocytic proteins such as amphiphysin and dynamin. To investigate the regulatory mechanisms that may occur under the conditions of excessive presynaptic Ca(2+) influx observed preceding neural hyperexcitation, we examined hippocampal slices following high-potassium or high-frequency electrical stimulation (HFS). In both cases, three truncated forms of amphiphysin I resulted from cleavage by the protease calpain. In vitro, the binding of truncated amphiphysin I to dynamin I and copolymerization into rings with dynamin I were inhibited, but its interaction with liposomes was not affected. Moreover, overexpression of the truncated form of amphiphysin I inhibited endocytosis of transferrin and synaptic vesicles. Inhibiting calpain prevented HFS-induced depression of presynaptic transmission. Finally, calpain-dependent amphiphysin I cleavage attenuated kainate-induced seizures. These results suggest that calpain-dependent cleavage of amphiphysin I inhibits synaptic vesicle endocytosis during neural hyperexcitation and demonstrate a novel post-translational regulation of endocytosis.

Indexed as

EndocytosisAnimalsCalpainDynamin IHippocampusHydrolysisLiposomesMaleMiceNerve Tissue ProteinsNeuronsPotassiumamphiphysinCalpainDynamin ILiposomesNerve Tissue ProteinsPotassium

Identifiers

PMID17541403
PMCPMC1894779
OpenAlexW2053001517

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.