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Scientific approaches to Huntington's disease
CRC Critical Reviews in Clinical Neurobiology
|January 1, 1984
Summary
Huntington's Disease (HD) involves progressive brain degeneration, particularly in the basal ganglia, leading to movement and cognitive deficits. Research explores neurochemical imbalances and potential causes like excitatory amino acid dysfunction for future treatments.
Area of Science:
- Neuroscience
- Genetics
- Neuropathology
Background:
- Huntington's Disease (HD) is an autosomal dominant neurodegenerative disorder.
- Symptoms include movement disturbances, psychiatric issues, and dementia, typically appearing midlife.
- Pathology involves severe degeneration of basal ganglia neurons, leading to atrophy and ventricular enlargement.
Purpose of the Study:
- To understand the pathophysiologic basis of HD.
- To identify mechanisms of selective neuronal degeneration in HD.
- To develop strategies for early detection and prevention of HD.
Main Methods:
- Neuropathologic examination of HD patient brains.
- Detailed neurochemical analyses of brain tissue.
- Investigating hypotheses involving excitatory amino acid neurotransmission and plasma membrane abnormalities.
Main Results:
- Demonstrated selective degeneration of striatal cholinergic, GABAergic, and peptidergic neurons.
- Identified relative sparing of the nigrostriatal pathway.
- Experimental models suggest excitatory amino acid dysfunction may cause HD pathology.
Conclusions:
- Neurochemical imbalances contribute to HD's movement disorder.
- Excitatory amino acid neurotransmission dysfunction is a leading hypothesis for neuronal loss.
- Further research aims at presymptomatic carrier identification and disease prevention.