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Published on: May 8, 2016
Mast cells and multiple sclerosis: a quantitative analysis
1Department of Anatomy and Cell Biology, Arstadveien 19, N-5009 Bergen, Norway. per.kruger@iac.uib.no
Abstract:
The average number of mast cells observed in multiple sclerosis (MS) plaques from four patients, was 0.35 mast cells per mm2. This number represents 1/100 of the amount found in normal human skin. Most mast cells were observed in the border zones of the MS plaques and were clustered in restricted areas along venules and capillaries, which represent the main area of oedema formation in the brain. This cell type may be considered as a contributor to the pathogenesis of oedema formation and subsequent myelin destruction in MS.
Insights
Mast cells in multiple sclerosis (MS) brain plaques are significantly reduced compared to skin. These cells accumulate at MS plaque borders, potentially contributing to brain swelling and myelin damage.
Area of Science:
- Neuroimmunology
- Pathology
Background:
- Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system.
- The role of mast cells in the pathogenesis of MS remains incompletely understood.
Purpose of the Study:
- To quantify mast cell density in MS plaques.
- To investigate the localization of mast cells within MS lesions.
Main Methods:
- Histological analysis of brain tissue from four MS patients.
- Mast cell counting and spatial distribution analysis within plaques.
Main Results:
- Average mast cell density in MS plaques was 0.35 cells/mm², significantly lower than normal human skin.
- Mast cells were predominantly found in border zones of plaques, concentrated near blood vessels.
Conclusions:
- Mast cells are scarce in MS plaques but localize to areas of edema.
- Mast cells may play a role in MS pathogenesis, particularly in edema formation and myelin destruction.

