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Updated: Jul 10, 2026
05:13
A Rat Model of Central Fatigue Using a Modified Multiple Platform Method
Published on: August 14, 2018
The basal ganglia: a substrate for fatigue in multiple sclerosis
1Unitat de Neuroimmunologia Clínica, Hospital Universitari Vall d'Hebron, Pg. Vall d'Hebron 119-129, 08035, Barcelona, Spain. ntellez@vhebron.net
Neuroradiology
|October 24, 2007
Summary
Multiple sclerosis (MS) fatigue may stem from basal ganglia dysfunction. This study found decreased NAA/Cr ratios in the lentiform nucleus of fatigued MS patients, suggesting a link.
Area of Science:
- Neuroimaging
- Neurology
- Biochemistry
Background:
- The precise causes of fatigue in multiple sclerosis (MS) are not fully understood.
- Advanced magnetic resonance imaging (MRI) techniques offer insights into MS-related fatigue.
- This study investigates the connection between MS fatigue and focal dysfunction in the basal ganglia and frontal white matter.
Purpose of the Study:
- To explore the relationship between fatigue in multiple sclerosis (MS) patients and focal dysfunction.
- To examine specific brain regions, namely the basal ganglia (lentiform nucleus) and frontal white matter, for signs of dysfunction.
- To correlate magnetic resonance spectroscopy (MRS) findings with fatigue levels in MS.
Main Methods:
- 41 relapsing-remitting MS patients and 20 healthy controls participated.
- Fatigue was assessed using the Fatigue Severity Scale (FSS) and Modified Fatigue Impact Scale (MFIS).
- Proton magnetic resonance spectra were acquired from the frontal white matter and lentiform nucleus to analyze metabolite ratios (NAA/Cr, NAA/Cho, Cho/Cr).
Main Results:
- A significant reduction in the N-acetylaspartate/creatine (NAA/Cr) ratio was observed in the lentiform nucleus of fatigued MS patients.
- No significant differences in metabolite ratios were found in the frontal white matter between fatigued and non-fatigued groups.
- These findings suggest localized metabolic changes in the basal ganglia associated with MS fatigue.
Conclusions:
- The results suggest that basal ganglia dysfunction may play a role in the development of fatigue in MS patients.
- Further research is required to confirm these findings and elucidate the exact mechanisms.
- This study highlights the potential of MRI spectroscopy in understanding the pathophysiology of MS-related fatigue.
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