Lateral Spinothalamic Tract Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The lateral spinothalamic tract contains projection neurons that transmit pain and temperature sensations from the spinal cord to the thalamus. These neurons are critical for nociception and are affected in various neurodegenerative and neurological conditions.
The lateral spinothalamic tract (LSTT) is a major ascending sensory pathway in the anterolateral system. Cell bodies of these projection neurons are located primarily in the dorsal horn (laminae I and V-VII) of the spinal cord[^1].
- Lamina I: Marginal zone neurons (pain/temperature)
- Lamina V: Wide dynamic range neurons (mechanical allodynia)
- Lamina VII: Propriospinal connections
- Glutamatergic: Primary neurotransmitter
- Substance P: In lamina I projection neurons
- CGRP: Co-expressed in some populations
- ASIC channels: Acid-sensing ion channels
- Multipolar neurons
- Long ascending axons
- Contralateral projection
- Dorsal root ganglion (pseudounipolar)
- Synapse in dorsal horn
- Cross in anterior commissure (1-2 segments rostral)
- Ascend in lateral funiculus
- Terminate in thalamic nuclei
- Thalamic relay to somatosensory cortex
- Pain perception and localization
- Fine touch, vibration
- Non-nociceptive input
- Pain affect
- Arousal related
- Mesencephalic reticular formation
- Pain perception changes
- Altered nociceptive processing
- May contribute to symptom presentation
- Pain as non-motor symptom
- Altered pain thresholds
- Possible thalamic involvement
- Loss of spinal interneurons
- Altered sensory processing
- May affect pain systems
- Neuropathic pain
- Central pain syndromes
- Allodynia
- Quantitative sensory testing
- Pain-evoked potentials
- Thermode testing
The study of Lateral Spinothalamic Tract Neurons 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.
- Spinothalamic tract neurons: anatomy and function (2021)
- Pain pathways in neurodegenerative disease (2020)
- Central pain mechanisms in neurological disorders (2019)