Sodium MRI and Multiple Sclerosis
Author Information
Author(s): Cipriano Emilio, Boffa Giacomo, Graziano Nicole, Wigley Claire, Petracca Maria, Schiavi Simona, Mancardi Giovanni Luigi, Klineova Sylvia, Boada Fernando, Lublin Fred, Inglese Matilde, Fleysher Lazar
Primary Institution: University of Genoa
Hypothesis
Total sodium concentration and intracellular sodium volume fraction would be associated with diffusion MRI metrics of extracellular space expansion in brain tissues of individuals with MS.
Conclusion
The study confirms that extracellular sodium concentration is associated with tissue damage and neuroaxonal loss in multiple sclerosis, while intracellular sodium concentration may serve as a biomarker for early metabolic dysfunction.
Supporting Evidence
- Total sodium concentration is elevated in MS lesions compared to healthy controls.
- Increases in total sodium concentration correlate with physical disability and cognitive impairment.
- Intracellular sodium concentration did not correlate with measures of tissue destruction.
- Elevated extracellular sodium concentration indicates tissue disruption and axonal loss.
- Intracellular sodium concentration may reflect early metabolic dysfunction in MS.
Takeaway
This study looked at how sodium levels in the brain relate to damage in people with multiple sclerosis, finding that higher sodium levels can indicate more damage.
Methodology
The study involved 52 individuals with multiple sclerosis and 26 healthy controls who underwent sodium MRI and diffusion MRI to assess sodium concentrations and microstructural metrics.
Limitations
The study's primary limitation is the low spatial resolution of sodium imaging, which may affect the accuracy of the results.
Participant Demographics
The study included 52 people with relapsing-remitting MS (mean age 36 years) and 26 healthy controls (mean age 38 years).
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website