Hippocampal Cajal Retzius Cells 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.
Cajal-Retzius (CR) cells are primitive inhibitory neurons that play crucial roles in hippocampal development, particularly in the formation of cortical lamina and synaptic circuit maturation. While largely disappearing in adulthood, residual CR cells and their developmental functions have implications for understanding hippocampal vulnerability in neurodegenerative diseases.
- Location: Stratum lacunosum-moleculare
- Density: Highest in early development
- Subiculum border: Prominent
- Entorhinal input zone: Target
- Layer I: Molecular layer
- Margin zone: Pallial-subpallial boundary
- Reelin source: Primary producers
- Horizontal orientation: Axons parallel to surface
- Bitufted dendrites: Characteristic shape
- Axonal plexus: Widespread
- Size: Medium-sized neurons
- Reelin: Secreted glycoprotein
- Calretinin: Calcium-binding
- CoupTF: Nuclear receptor
- p73: Transcription factor
- Npas1: Neuronal PAS domain
- Programmed cell death: Apoptosis after development
- Functional role: Transient
- Adult population: Minimal residual
- Maintenance: Role unclear
- Reelin signaling: Impaired in AD
- Amyloid interaction: Aβ affects reelin
- Tau pathology: Reelin kinase pathways
- Synaptic plasticity: LTP impairment
- Developmental memory: Circuit formation
- Adult neurogenesis: Dentate gyrus
- Vulnerability factors: Early insults
- Compensatory potential: Limited
¶ Epilepsy and Neurodegeneration
- Inhibitory role: Reduced in disease
- Circuit hyperexcitability: Contribution
- Temporal lobe: Hippocampal sclerosis
- Spontaneous activity: Early development
- Burst firing: Depolarization
- Inhibition: GABA release
- Calcium spikes: Plateau potentials
- Excitatory to inhibitory: Shift in GABA
- Reelin effects: Depolarizing to hyperpolarizing
- Maturation: Adult properties
- Reelin agonists: Therapeutic potential
- VLDLR/ApoER2: Receptor targeting
- ** downstream signaling**: PI3K/Akt, MAPK
- Developmental models: Understanding vulnerability
- Regeneration potential: Cell replacement
- Circuit reconstruction: Therapeutic
The study of Hippocampal Cajal Retzius Cells 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.
- Honda T, Kobayashi K. Cajal-Retzius cells: Their functions in the developing and adult neocortex. Proc Jpn Acad Ser B Phys Biol Sci. 2020;96(10):515-536.
- Ishii K, Kubo KI, Nakajima K. Reelin and neuropsychiatric disorders. Front Cell Neurosci. 2016;10:155.
- Soriano E, Del Río JA. The cells of Cajal-Retzius: A reevaluation of their role in cortical development. Brain Res Rev. 2005;48(1):25-32.