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Updated: Aug 18, 2026
Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
Published on: July 19, 2019
A longitudinal MRI study of histopathologically defined hypointense multiple sclerosis lesions
A Bitsch1, T Kuhlmann, C Stadelmann
1Abteilung Neurologie, Georg-August-Universität, Göttingen, Germany.
Abstract:
Severe tissue destruction is the presumed histopathological correlate of hypointense multiple sclerosis (MS) lesions. In this study we correlated changes of lesion hypointensity over time with initial histopathological features in 14 biopsied MS lesions. The extent of hypointensity increased in initially demyelinated plaques and decreased in remyelinating lesions. The initial axonal loss determined the increase of hypointensity over time. In conclusion, both axonal loss and demyelinating activity determine the evolution of hypointensity over time.
Insights
Hypointense lesions in multiple sclerosis (MS) reflect tissue damage. Axonal loss and demyelination influence lesion evolution, with initial axonal damage correlating with increased hypointensity over time.
Area of Science:
- Neuroscience
- Pathology
- Radiology
Background:
- Hypointense lesions on MRI are associated with severe tissue destruction in multiple sclerosis (MS).
- Understanding the histopathological basis of lesion evolution is crucial for MS management.
Purpose of the Study:
- To correlate changes in lesion hypointensity over time with initial histopathological features in MS lesions.
- To investigate the role of axonal loss and demyelination in the evolution of MS lesion hypointensity.
Main Methods:
- Analysis of 14 biopsied MS lesions.
- Correlation of longitudinal changes in lesion hypointensity with initial histopathological findings.
Main Results:
- Lesion hypointensity increased in initially demyelinated plaques.
- Lesion hypointensity decreased in remyelinating lesions.
- Initial axonal loss was a key determinant for the increase in lesion hypointensity over time.
Conclusions:
- Both axonal loss and demyelinating activity significantly influence the temporal evolution of hypointensity in MS lesions.
- Histopathological features provide insight into the dynamic changes observed in MS lesions.
