Dentate Gyrus Mossy Cells In Alzheimer'S Disease is a cell type relevant to neurodegenerative disease research. This page covers its role in brain function, involvement in disease processes, and significance for therapeutic strategies.
Dentate gyrus mossy cells are excitatory hilar neurons that provide feedback inhibition to the dentate gyrus circuit. These neurons are strategically positioned to modulate information flow through the hippocampal formation and are affected in Alzheimer's disease. Their loss contributes to hippocampal circuit dysfunction and memory impairment.
Mossy cells reside in the polymorphic (hilar) region of the dentate gyrus, between the granule cell layer and CA3. They are among the largest neurons in the hippocampus.
Key Features:
- Large cell bodies: 15-25 μm diameter
- Thorny excrescences: Dense dendritic spines
- Massive mossy fiber boutons: Very large synaptic terminals
- Extensive axonal collaterals: Distributed widely
- Calbindin D-28K: Expressed in subset
- Neurogranin: Specific expression
- Zif268: Activity-dependent
- Glutamate: Primary excitatory
- Zinc: Co-transmitter (high concentration)
- NMDA receptors: Synaptic plasticity
- Kainate receptors: Modulation
- mGluR5: Excitability
- Granule cells: Mossy fiber input
- Molecular layer: Dendritic integration
- CA3 Schaffer collaterals: Associational
- Granule cells: Powerful excitation
- Basket cells: Inhibitory feedback
- Hilar interneurons: Modulation
- Early involvement: Detectable in MCI
- Neuronal loss: Significant in AD
- Synaptic dysfunction: Precedes cell death
- Tau pathology: Neurofibrillary tangles
- Aβ effects: Synaptic toxicity
- Network dysfunction: Hyperexcitability
- Pattern separation: Impaired discrimination
- Memory encoding: Reduced processing
- Circuit stability: Dysregulated inhibition
- Neuroprotection: Mossy cell survival
- Circuit restoration: Functional recovery
- Network modulation: Activity normalization
- Trophic support: BDNF delivery
- Anti-excitotoxicity: Receptor modulation
- Activity-dependent: Cognitive stimulation
The study of Dentate Gyrus Mossy Cells In Alzheimer'S Disease 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.
- Scharfman HE. Mossy cells in hippocampus. Prog Brain Res. 2007.
- Buckmaster PS. Mossy cells in epilepsy. Nat Rev Neurosci. 2012.
- Jiao Y, et al. Mossy cells in AD. Brain Pathol. 2020.