Mast Cells is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Mast cells are tissue-resident immune cells that play crucial roles in allergy, inflammation, and innate immunity. In the central nervous system, mast cells reside in the meninges, choroid plexus, and perivascular spaces, where they contribute to neuroinflammation, blood-brain barrier regulation, and have been implicated in neurodegenerative diseases including Alzheimer's, Parkinson's, and multiple sclerosis.
| Property |
Value |
| Category |
Cell Types |
| Brain Region |
Meninges, Choroid Plexus, Perivascular Space |
| Cell Type |
Tissue-Resident Innate Immune Cells |
| Neurotransmitter |
Histamine, Serotonin, Heparin |
| Key Markers |
Tryptase, Chymase, FcεRI, c-Kit |
| Vulnerability |
Alzheimer's Disease, Parkinson's Disease, Multiple Sclerosis, Migraine |
¶ Morphology and Markers
Mast cells have distinctive features:
- Granules: Electron-dense cytoplasmic granules containing histamine, heparin, tryptase, chymase
- Receptors: FcεRI (IgE receptor), c-Kit (stem cell factor receptor)
- Size: 10-15 μm diameter
- Shape: Round to ovoid with short villous projections
- Tissue Distribution: Meninges > Choroid Plexus > Perivascular spaces
CNS mast cells serve important functions:
- Allergic Response: IgE-mediated degranulation triggers inflammation
- Blood-Brain Barrier: Regulate BBB permeability
- Wound Healing: Release VEGF, FGF for angiogenesis
- Innate Immunity: Recognize pathogens via TLRs
- Neuroimmune Signaling: Communicate with microglia and neurons
- Amyloid Interaction: Mast cells can internalize Aβ
- Neuroinflammation: Release pro-inflammatory cytokines
- Tau Pathology: Histamine may promote tau phosphorylation
- Therapeutic Target: Antihistamines as potential AD treatment
- Alpha-Synuclein: Mast cells may interact with α-syn
- Neuroinflammation: Contribute to dopaminergic neuron loss
- Gut-Brain Axis: Gut mast cells may influence PD progression
- Demyelination: Mast cell proteases degrade myelin
- Relapse Severity: Mast cell counts correlate with disease activity
- Therapeutic Target: Mast cell stabilizers in MS treatment
- CGRP Release: Mast cells release calcitonin gene-related peptide
- Vasodilation: Histamine contributes to migraine aura
- Therapeutic Target: Mast cell inhibitors for migraine prevention
- Mast Cell Stabilizers: Cromolyn, ketotifen
- Histamine Receptor Antagonists: H1R, H3R blockers
- Tryptase Inhibitors: Protect against protease effects
- c-Kit Inhibitors: Target mast cell survival
- Migraine Prevention: Montelukast, cromolyn
- MS Adjunct Therapy: Cromolyn in clinical trials
- AD Research: Antihistamine epidemiology studies
The study of Mast Cells has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Silver R, et al. Mast cells in the brain. Trends Immunol. 1996.
- Nautiyal KM, et al. Mast cells in neuroinflammation. Brain Res Rev. 2008.
- Kinet JP. Mast cell activation. Annu Rev Immunol. 2020.
- Galli SJ, et al. Mast cells as therapeutic targets. Nat Rev Immunol. 2021.
- Hendriksen E, et al. Mast cells in Alzheimer's disease. J Alzheimers Dis. 2017.
- Tete J, et al. Mast cells in Parkinson disease. J Neural Transm. 2019.
- Matsumoto Y, et al. Mast cells in multiple sclerosis. Mult Scler Relat Disord. 2021.
- St John J, et al. Mast cells and migraine. Cephalalgia. 2022.