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Updated: Nov 4, 2025
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Chronic Post-Ischemia Pain Model for Complex Regional Pain Syndrome Type-I in Rats
Published on: January 21, 2020
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Chronic pain and neuroinflammation
Pascale Vergne-Salle1, Philippe Bertin1
1Service de rhumatologie, CHU de Dupuytren 2, 16, rue Bernard-Descottes, 87042 Limoges, France.
Joint Bone Spine
|May 22, 2021
Summary
Chronic pain can persist after injury due to central sensitization, a process involving nervous and immune system interactions. This neuroinflammation amplifies pain signals, affecting emotional and cognitive aspects.
Area of Science:
- Rheumatology
- Neuroscience
- Immunology
Background:
- Chronic pain often arises after musculoskeletal injury, persisting due to central sensitization rather than solely injury progression.
- Central sensitization involves complex interactions between the nervous and immune systems, leading to amplified pain signaling.
- Peripheral sensitization, linked to inflammation, involves afferent nerve fibers releasing neurotransmitters that activate microglia.
Purpose of the Study:
- To describe the pathophysiology of chronic pain.
- Incorporate the latest scientific data on neuroplasticity and neuroinflammation in chronic pain.
- Explain the mechanisms of central sensitization and neuroinflammation.
Main Methods:
- Review of scientific literature on chronic pain pathophysiology.
- Analysis of data on nervous and immune system interactions.
- Exploration of neuroplasticity and neuroinflammation in pain signaling.
Main Results:
- Central sensitization is driven by neuroinflammatory processes initiated by activated microglia.
- Neuroinflammation amplifies pain hypersensitivity in second-order neurons.
- Neuroinflammation impacts higher brain structures involved in pain modulation and emotional/cognitive processing.
Conclusions:
- Central sensitization and neuroinflammation are key mechanisms in chronic pain pathophysiology.
- Understanding these processes is crucial for developing effective pain management strategies.
- Latest research highlights the intricate interplay between neuroplasticity and neuroinflammation in persistent pain.
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