Evidence map›Paper›PMID 36078121›Full record

ArticleCells2022

An Epitope-Specific LGI1-Autoantibody Enhances Neuronal Excitability by Modulating Kv1.1 Channel.

Johanna Extrémet, Oussama El Far, Norbert Ankri, Sarosh R Irani, Dominique Debanne, Michaël Russier

Open access · goldAbstract read
In one paragraph

Article in Cells, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

13 citing papers in PubMed, 30 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. LGI1 Autoantibodies Enhance Synaptic Transmission by Presynaptic KNeurology(R) neuroimmunology & neuroinflammation · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Rescue of Normal Excitability in LGI1-Deficient Epileptic Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  11. Article
  12. Article
  13. eNeuro · 2023
    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

6 authors at 2 institutions in 2 countries.

Johanna ExtrémetUNIS, INSERM, Aix-Marseille Université, 13015 Marseille, France.
Oussama El FarUNIS, INSERM, Aix-Marseille Université, 13015 Marseille, France.ORCID 0000-0002-7473-8345
Norbert AnkriUNIS, INSERM, Aix-Marseille Université, 13015 Marseille, France.
Sarosh R IraniOxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK.ORCID 0000-0002-7667-9748
Dominique DebanneUNIS, INSERM, Aix-Marseille Université, 13015 Marseille, France.ORCID 0000-0001-8581-5695
Michaël RussierUNIS, INSERM, Aix-Marseille Université, 13015 Marseille, France.ORCID 0000-0003-1401-9389
Inserm · FRJohn Radcliffe Hospital · GB

Funding

Department of HealthMedical Research Council MR/V007173/1Wellcome Trust 104079/Z/14/Z
6 · The paper itself

Abstract

Leucine-rich Glioma-Inactivated protein 1 (LGI1) is expressed in the central nervous system and its genetic loss of function is associated with epileptic disorders. Additionally, patients with LGI1-directed autoantibodies have frequent focal seizures as a key feature of their disease. LGI1 is composed of a Leucine-Rich Repeat (LRR) and an Epitempin (EPTP) domain. These domains are reported to interact with different members of the transsynaptic complex formed by LGI1 at excitatory synapses, including presynaptic Kv1 potassium channels. Patient-derived recombinant monoclonal antibodies (mAbs) are ideal reagents to study whether domain-specific LGI1-autoantibodies induce epileptiform activities in neurons and their downstream mechanisms. We measured the intrinsic excitability of CA3 pyramidal neurons in organotypic cultures from rat hippocampus treated with either an LRR- or an EPTP-reactive patient-derived mAb, or with IgG from control patients. We found an increase in intrinsic excitability correlated with a reduction of the sensitivity to a selective Kv1.1-channel blocker in neurons treated with the LRR mAb, but not in neurons treated with the EPTP mAb. Our findings suggest LRR mAbs are able to modulate neuronal excitability that could account for epileptiform activity observed in patients.

Indexed as

Intracellular Signaling Peptides and ProteinsNerve Tissue ProteinsAnimalsAutoantibodiesEpitopesLeucineNeuronsRatsAutoantibodiesEpitopesIntracellular Signaling Peptides and ProteinsLeucineNerve Tissue ProteinsautoantibodiesepilepsyKv1.1LGI1limbic encephalitis

Identifiers

PMID36078121
PMCPMC9454693
OpenAlexW4294142686

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.