Evidence map›Paper›PMID 33769452›Full record

ArticleBrain : a journal of neurology2021

Medial septal GABAergic neurons reduce seizure duration upon optogenetic closed-loop stimulation.

Katerina Hristova, Cristina Martinez-Gonzalez, Thomas C Watson, Neela K Codadu, Kevan Hashemi, Peter C Kind, Matthew F Nolan, Alfredo Gonzalez-Sulser

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
4.5field-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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 52 citations in OpenAlex.

  1. Pooled it
  2. GABAFrontiers in neural circuits · 2022
    Pooled it
  3. Review
  4. Review
  5. Article
  6. Optogenetic stimulation of the dorsal striatum bidirectionally controls seizures.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. On brain stimulation in epilepsy.Brain : a journal of neurology · 2025
    Review
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  10. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Katerina HristovaCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.
Cristina Martinez-GonzalezCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.ORCID 0000-0001-9969-1160
Thomas C WatsonCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.
Neela K CodaduCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.ORCID 0000-0002-5819-0340
Kevan HashemiOpen Source Instruments, Watertown MA, USA.ORCID 0000-0002-6007-893X
Peter C KindCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.
Matthew F NolanCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.
Alfredo Gonzalez-SulserCentre for Discovery Brain Sciences, Simons Initiative for the Developing Brain, Patrick Wild Centre, University of Edinburgh, Edinburgh, UK.ORCID 0000-0003-3494-4029
University of Edinburgh · GBOpen Source Science Project · US

Funding

Medical Research Council MR/P006213/1Wellcome Trust 200855/Z/16/Z
6 · The paper itself

Abstract

Seizures can emerge from multiple or large foci in temporal lobe epilepsy, complicating focally targeted strategies such as surgical resection or the modulation of the activity of specific hippocampal neuronal populations through genetic or optogenetic techniques. Here, we evaluate a strategy in which optogenetic activation of medial septal GABAergic neurons, which provide extensive projections throughout the hippocampus, is used to control seizures. We utilized the chronic intrahippocampal kainate mouse model of temporal lobe epilepsy, which results in spontaneous seizures and as is often the case in human patients, presents with hippocampal sclerosis. Medial septal GABAergic neuron populations were immunohistochemically labelled and were not reduced in epileptic conditions. Genetic labelling with mRuby of medial septal GABAergic neuron synaptic puncta and imaging across the rostral to caudal extent of the hippocampus, also indicated an unchanged number of putative synapses in epilepsy. Furthermore, optogenetic stimulation of medial septal GABAergic neurons consistently modulated oscillations across multiple hippocampal locations in control and epileptic conditions. Finally, wireless optogenetic stimulation of medial septal GABAergic neurons, upon electrographic detection of spontaneous hippocampal seizures, resulted in reduced seizure durations. We propose medial septal GABAergic neurons as a novel target for optogenetic control of seizures in temporal lobe epilepsy.

Indexed as

OptogeneticsAnimalsEpilepsy, Temporal LobeFemaleGABAergic NeuronsHippocampusMaleMiceSeizuresSeptal Nucleimedial septum GABAergic neuronsnetwork stimulationoptogeneticstemporal lobe epilepsywireless closed-loop intervention

Identifiers

PMID33769452
PMCPMC8219369
OpenAlexW3136091386

What OpenQuestion holds

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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.