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Endogenous facilitation: from molecular mechanisms to persistent pain
Daphne A Robinson1, Amelita A Calejesan, Feng Wei
1Department of Physiology, 1 King's College Circle, University of Toronto, Toronto, Canada M5S 1A8.
Current Neurovascular Research
|September 27, 2005
Summary
This review proposes new endogenous facilitatory systems in the brain that, alongside inhibitory ones, modulate pain. Understanding these systems offers hope for improved chronic pain treatments.
Area of Science:
- Neuroscience
- Pain Research
- Spinal Cord Physiology
Background:
- Sensory transmission, including pain, is modulated by endogenous inhibitory systems in the spinal cord dorsal horn.
- Recent studies reveal endogenous modulatory systems are bi-phasic, encompassing both inhibitory and facilitatory functions.
- Existing research primarily focuses on inhibitory mechanisms, with less attention to facilitatory roles.
Purpose of the Study:
- To propose the existence of endogenous facilitatory systems within the brain.
- To review existing evidence supporting the hypothesis of brain-based endogenous facilitatory systems.
- To highlight the potential of these systems in understanding and treating chronic pain.
Main Methods:
- Literature review of behavioral studies.
- Analysis of molecular studies.
- Synthesis of evidence from diverse research areas.
Main Results:
- Evidence suggests the presence of endogenous facilitatory systems in the brain, complementing inhibitory pathways.
- These facilitatory systems play a role in sensory transmission and pain modulation.
- The bi-phasic nature of endogenous modulation is supported by recent findings.
Conclusions:
- Endogenous facilitatory systems in the brain are proposed to exist.
- Understanding the molecular and cellular mechanisms of these facilitatory systems is crucial.
- This understanding holds promise for developing novel therapeutic strategies for chronic pain management.