Evidence map›Paper›PMID 38408864›Full record

ReviewBrain : a journal of neurology2024

How do we get from hyperexcitability to excitotoxicity in amyotrophic lateral sclerosis?

G Lorenzo Odierna, Steve Vucic, Marcus Dyer, Tracey Dickson, Adele Woodhouse, Catherine Blizzard

Abstract readReview
In one paragraph

Review in Brain : a journal of neurology, 2024. 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
–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

22 citing papers in PubMed.

  1. Immune-mediated excitotoxicity in brain disorders.Nature reviews. Immunology · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Junctions in Jeopardy: the neuromuscular junction is a selective pathological target in Charcot-Marie-Tooth disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Network Dysfunction Precedes Neurodegeneration in a dox-Regulatable TDP-43 Mouse Model of ALS-FTD.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  14. Article
  15. Article
  16. Review
  17. Review
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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.

G Lorenzo OdiernaTasmanian School of Medicine, University of Tasmania, Hobart, TAS 7000, Australia.
Steve VucicBrain and Nerve Research Center, The University of Sydney, Sydney 2050, Australia.
Marcus DyerMenzies Institute for Medical Research, University of Tasmania, Hobart, TAS 7000, Australia.
Tracey DicksonMenzies Institute for Medical Research, University of Tasmania, Hobart, TAS 7000, Australia.
Adele WoodhouseThe Wicking Dementia Centre, University of Tasmania, Hobart, TAS 7000, Australia.
Catherine BlizzardTasmanian School of Medicine, University of Tasmania, Hobart, TAS 7000, Australia.ORCID 0000-0002-8683-2937

Funding

Motor Neuron Disease Research AustraliaNational Health and Medical Research Council of Australia
6 · The paper itself

Abstract

Amyotrophic lateral sclerosis is a devastating neurodegenerative disease that, at present, has no effective cure. Evidence of increased circulating glutamate and hyperexcitability of the motor cortex in patients with amyotrophic lateral sclerosis have provided an empirical support base for the 'dying forward' excitotoxicity hypothesis. The hypothesis postulates that increased activation of upper motor neurons spreads pathology to lower motor neurons in the spinal cord in the form of excessive glutamate release, which triggers excitotoxic processes. Many clinical trials have focused on therapies that target excitotoxicity via dampening neuronal activation, but not all are effective. As such, there is a growing tension between the rising tide of evidence for the 'dying forward' excitotoxicity hypothesis and the failure of therapies that target neuronal activation. One possible solution to these contradictory outcomes is that our interpretation of the current evidence requires revision in the context of appreciating the complexity of the nervous system and the limitations of the neurobiological assays we use to study it. In this review we provide an evaluation of evidence relevant to the 'dying forward' excitotoxicity hypothesis and by doing so, identify key gaps in our knowledge that need to be addressed. We hope to provide a road map from hyperexcitability to excitotoxicity so that we can better develop therapies for patients suffering from amyotrophic lateral sclerosis. We conclude that studies of upper motor neuron activity and their synaptic output will play a decisive role in the future of amyotrophic lateral sclerosis therapy.

Indexed as

Amyotrophic Lateral SclerosisGlutamic AcidMotor NeuronsAnimalsHumansMotor CortexGlutamic Acidamyotrophic lateral sclerosisdying forwardexcitotoxicityhomeostasishyperexcitability

Identifiers

PMID38408864
PMCPMC11068114

What Socratic 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 Socratic graph.