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Potential c-fiber damage in Wilson's disease
H-J von Giesen1, P Weiss, G Arendt
1Department of Neurology, Heinrich-Heine-Universität Düsseldorf, Germany. giesenj@uni-duesseldorf.de
Acta Neurologica Scandinavica
|September 6, 2003
Summary
Wilson's disease (WD) may involve peripheral nervous system damage, specifically affecting warm sensation C-fibers. This sensory dysfunction appears separate from the known basal ganglia motor issues in WD patients.
Area of Science:
- Neurology
- Neuroscience
- Medical Research
Background:
- Wilson's disease (WD) is a genetic disorder causing copper accumulation.
- Its neurological manifestations are primarily linked to basal ganglia dysfunction.
- Peripheral and autonomic nervous system involvement in WD remains less understood.
Purpose of the Study:
- To investigate the potential role of the peripheral and autonomic nervous systems in Wilson's disease.
- To assess sensory and motor functions in WD patients compared to healthy controls.
Main Methods:
- Quantitative sensory testing (QST) for thermal, pain, and vibratory sensation.
- Pupillometric evaluation of autonomic function.
- Electrophysiological testing of basal ganglia motor function (MRAM, RT, CT).
- Comparison of 17 WD patients with 20 healthy controls.
Main Results:
- Patients with WD exhibited significantly higher thresholds for warm sensation in both sural and peroneal nerves.
- Pupil function remained unaltered in WD patients.
- Significant slowing of MRAM and prolonged RT and CT were observed in WD patients.
- No significant correlation was found between reaction time and QST results.
Conclusions:
- Findings suggest potential involvement of unmyelinated warm-specific C-fibers in Wilson's disease.
- This peripheral nerve dysfunction appears independent of the primary basal ganglia motor deficits.