X94 Like Cortical Interneurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
X94-like cells (also known as elongated bipolar cells or translaminar inhibitory cells) are a class of corticocortical GABAergic interneurons characterized by their distinctive elongated morphology and translaminar axonal projections. They represent an important population for coordinating activity across cortical layers.
X94-like cells display:
- Elongated Cell Body: Fusiform soma shape
- Vertical Dendrites: Dendrites extend vertically through multiple layers
- Translaminar Axons: Axons project across multiple cortical layers
- Layer Distribution: Span layers 1-4
X94-like cells exhibit:
- Regular Spiking: Adapting firing pattern
- Accommodation: Spike frequency adaptation
- Broad Spikes: Longer action potential duration
- Low Threshold: Relatively depolarized firing threshold
- Calretinin (CR): Primary marker
- VIP: Often co-expressed
- Reelin: Partial expression
- GABA: Primary neurotransmitter
- Coordinate activity across layers
- Provide vertical inhibition
- Regulate columnar processing
- Connect superficial and deep layers
- Integrate information streams
- Modulate corticocortical circuits
- Important for vertical integration
- Feature detection across layers
- Layer-spanning circuits disrupted
- May affect multi-layer integration
- Cognitive implications
- Translaminar circuits altered
- Contributes to hyperexcitability
The study of X94 Like Cortical Interneurons 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.
- Kawaguchi Y, et al. (1995). "Classification of nonpyramidal cells." Journal of Comparative Neurology.
- Markram H, et al. (2004). "Interneurons of the neocortical inhibitory system." Nature Reviews Neuroscience.
- Fairen A, et al. (1984). "Nonpyramidal neurons in cerebral cortex." Neuroscience.
- DeFelipe J, et al. (2013). "Cortical interneurons: from Cajal to neuron classification." Brain.
- Feldmeyer D, et al. (2018). "Neocortical interneurons." Brain Research.