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Motor neurone disease

A Goonetilleke¹, J de Belleroche, R J Guiloff

¹Department of Neurology, Charing Cross Hospital, London, U.K.

Essays in Biochemistry

|January 1, 1994

Summary

Motor neurone disease (MND), or amyotrophic lateral sclerosis, is a progressive neurological disorder with unknown causes and no cure. Research explores genetic factors, environmental agents, and potential treatments like glutamate antagonists.

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Area of Science:

Neuroscience
Genetics
Pathology

Background:

Motor neurone disease (MND), also known as amyotrophic lateral sclerosis (ALS), is a progressive neurological disorder characterized by the loss of upper and lower motor neurone function.
Pathological hallmarks include intracytoplasmic motor neurone inclusion bodies and ubiquitin staining.
The aetiopathogenesis of MND remains largely unknown, with no definitive effective treatment currently available.

Purpose of the Study:

To review current understanding of MND aetiopathogenesis, including various hypotheses and genetic/environmental factors.
To highlight ongoing research into potential therapeutic agents for MND.

Main Methods:

Review of existing literature on MND.
Analysis of neurotransmitter, neuropeptide, and gene expression studies.
Examination of genetic linkage studies and familial forms of MND.
Consideration of environmental factors and therapeutic trials.

Main Results:

Abnormalities in glutamate metabolism suggest an excitotoxin hypothesis for motor neurone destruction.
Other proposed mechanisms include deficits in trophic factors, trans-synaptic degeneration, impaired detoxification, and DNA/RNA metabolism issues.
Familial forms linked to chromosome 21 and mutations in the Cu/Zn SOD gene are significant genetic findings.
Atypical Western Pacific forms prompt investigation into environmental agents.

Conclusions:

The aetiopathogenesis of MND is multifactorial, involving genetic predispositions and potentially environmental triggers.
Ongoing research focuses on understanding these mechanisms to develop effective treatments.
Several therapeutic agents, including glutamate antagonists and growth factors, are under investigation.

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