Cited by 388Amyotrophic Lateral Sclerosis ResearchNeuroscience and Neuropharmacology ResearchAlzheimer's disease research and treatments

A Review of the Neural Mechanisms of Action and Clinical Efficiency of Riluzole in Treating Amyotrophic Lateral Sclerosis: What have we Learned in the Last Decade?: Neural Mechanisms of Action and Clinical Efficiency of Riluzole in Treating ALS

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Bellingham, Mark C.·2011·CNS Neuroscience & Therapeutics

Abstract

Amyotrophic lateral sclerosis (ALS) is a devastating and fatal neurodegenerative disease of adults which preferentially attacks the neuromotor system. Riluzole has been used as the only approved treatment for amyotrophic lateral sclerosis since 1995, but its mechanism(s) of action in slowing the progression of this disease remain obscure. Searching PubMed for "riluzole" found 705 articles published between January 1996 and June 2009. A systematic review of this literature found that riluzole had a wide range of effects on factors influencing neural activity in general, and the neuromotor system in particular. These effects occurred over a large dose range (<1 μM to >1 mM). Reported neural effects of riluzole included (in approximate ascending order of dose range): inhibition of persistent Na(+) current = inhibition of repetitive firing < potentiation of calcium-dependent K(+) current < inhibition of neurotransmitter release < inhibition of fast Na(+) current < inhibition of voltage-gated Ca(2+) current = promotion of neuronal survival or growth factors < inhibition of voltage-gated K(+) current = modulation of two-pore K(+) current = modulation of ligand-gated neurotransmitter receptors = potentiation of glutamate transporters. Only the first four of these effects commonly occurred at clinically relevant concentrations of riluzole (plasma levels of 1-2 μM with three- to four-fold higher concentrations in brain tissue). Treatment of human ALS patients or transgenic rodent models of ALS with riluzole most commonly produced a modest but significant extension of lifespan. Riluzole treatment was well tolerated in humans and animals. In animals, despite in vitro evidence that riluzole may inhibit rhythmic motor behaviors, in vivo administration of riluzole produced relatively minor effects on normal respiration parameters, but inhibited hypoxia-induced gasping. This effect may have implications for the management of hypoventilation and sleep-disordered breathing during end-stage ALS in humans.

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Crossref · 10.1111/j.1755-5949.2009.00116.x

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  • Riluzole is a voltage-sensitive sodium channel blocker with high affinity for inactivated channels, resulting in inhibition of high-frequency neuronal firing.

    “It is a voltagesensitive sodium channel blocker with high affinity for inactivated channels resulting in the inhibition of high-frequency neuronal firing.”
  • As a proposed main mechanism, riluzole reduces glutamatergic neurotransmission by blocking NMDA receptors, increasing synaptic AMPA receptor trafficking and the clearance of glutamate via glutamate transporters.

    “As a proposed main mechanism, riluzole reduces glutamatergic neurotransmission by blocking NMDA receptors, increasing synaptic AMPA receptor trafficking and the clearance of glutamate via glutamate transporters.”

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Research works printed but not linked: 4

  1. Mantz J. Rilzuole. CNS Drug Rev 1996;2:40-51.
  2. Wokke J. Riluzole. Lancet 1996;348:795-799.
  3. Umemiya M, Berger AJ. Riluzole inhibits glycinergic postsynaptic currents in rat hypoglossal motoneurons. Br J Pharmacol 1995;116:3227-3230.
  4. Girdlestone D, Dupuy A, Coston A, et al. Riluzole antagonizes excitatory amino acid evoked firing in rat facial motoneurons in vivo. Br J Pharmacol 1989;97:583P.

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Authors
Bellingham, M. C.
Affiliations
The University of Queensland (AU)
Corresponding author
Bellingham, Mark C.
Venue
CNS Neuroscience & Therapeutics
Publisher
Wiley
Published
2011-01-17
Volume
17
Issue
1
Pages
4-31
ISSN
1755-5930 (ISSN-L)
OpenAlex
W1590729586
Cited by
388
References
202
Citations by year
2026: 16 · 2025: 23 · 2024: 19 · 2023: 23 · 2022: 34 · 2021: 23 · 2020: 31 · 2019: 23 · 2018: 29 · 2017: 34 · 2016: 23 · 2015: 28 · 2014: 22 · 2013: 22 · 2012: 22
FWCI
2.41
Type
journal article
Language
en
Open access
Locations
  • CNS Neuroscience & Therapeutics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
riluzole, amyotrophic lateral sclerosis, mechanism of action, sodium channel inhibition, calcium-activated potassium current, neurotransmitter release, glutamate transporters, neuronal survival, lifespan extension, hypoventilation, sleep-disordered breathing, neuroprotection
MeSH terms
Adult, Aged, Amyotrophic Lateral Sclerosis, Animals, Brain, Dose-Response Relationship, Drug, Humans, Middle Aged, Motor Neurons, Excitatory Amino Acid Antagonists, Neuroprotective Agents, Riluzole

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