Brain Pericytes In Neurodegeneration is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Brain Pericytes are perivascular cells embedded in the basement membrane of cerebral microvessels. They play essential roles in blood-brain barrier (BBB) maintenance, capillary blood flow regulation, and neurovascular coupling. Pericyte loss is emerging as a critical early event in neurodegenerative diseases.
- Basement membrane contact: Via integrins
- Endothelial stabilization: Physical association
- Capillary integrity: Structural maintenance
- BBB development: Critical for formation
- Capillary constriction: Via endothelin-1
- Blood flow control: Adjusts perfusion
- Neurovascular coupling: Mediates signaling
- Angiogenesis: Vessel formation support
- Pericyte loss: 30-40% reduction in AD
- Plaque association: Aβ accumulates in pericytes
- Morphological abnormalities: Degeneration
- Coverage reduction: Less capillary coverage
- Aβ toxicity: Direct accumulation
- TGF-β signaling: Dysregulated
- Oxidative stress: Mitochondrial damage
- PDGFR-β decline: Signaling impairment
- BBB breakdown: Leakage
- Reduced perfusion: Hypoxia
- Aβ clearance impairment: Via perivascular pathway
- Neurovascular uncoupling: Functional deficit
- SNc pericytes: Affected region
- α-Synuclein accumulation: In pericytes
- Vascular dysfunction: Contributing factor
- Motor cortex pericytes: Morphological changes
- BBB disruption: Early event
- Disease progression: Correlation
- Lesion pericytes: Activated phenotype
- BBB repair: Role in recovery
- Demyelination: Contribute to lesions
- Critical survival pathway: Essential for pericytes
- PDGF-BB: Ligand from endothelial cells
- Downstream effects: PI3K/Akt, MAPK
- Therapeutic target: Enhancement
- TGF-β: Bidirectional effects
- Angiopoietin-1/Tie2: Stability
- S1P signaling: Migration
- Notch3: Arterial pericytes
- PDGF-BB delivery: Promote survival
- Antioxidants: Reduce oxidative damage
- BBB stabilizers: Enhance integrity
- Stem cell therapy: Pericyte progenitors
- Gene therapy: Target expression
- Small molecules: Promote function
The study of Brain Pericytes In Neurodegeneration 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.
- Winkler EA, et al. (2011). Pericytes: Underappreciated players in CNS disorders. Nature Reviews Neurology.
- Bell RD, et al. (2010). Pericytes control key neurovascular functions. Nature.
- Sweeney MD, et al. (2016). Pericytes in cerebrovascular disease. Nature Reviews Neurology.