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Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
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Acupoint Catgut Embedding for Treatment of Chronic Pelvic Pain Due to the Sequelae of Pelvic Inflammatory Disease
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Published on: May 3, 2024

When does acute pain become chronic?

C Voscopoulos1, M Lema

  • 1Department of Anesthesiology, Critical Care, and Pain Medicine, University at Buffalo, Buffalo, NY, USA.

British Journal of Anaesthesia
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

The transition from acute to chronic pain involves peripheral and central nervous system changes. Understanding these mechanisms, including cyclooxygenase-2 and interleukin-1β, can help develop new pain treatments.

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Area of Science:

  • Neuroscience
  • Pain Research
  • Molecular Biology

Background:

  • Pain perception involves peripheral receptors and central nervous system pathways.
  • Acute pain typically resolves with healing, but persistent pain can lead to chronic conditions.
  • Chronic pain is characterized by allodynia, hyperalgesia, and hyperpathia, diminishing function.

Purpose of the Study:

  • To elucidate the pathophysiological steps in the transition from acute to chronic pain.
  • To identify key molecular and cellular mechanisms involved in chronic pain development.
  • To provide insights for developing novel therapeutic agents for chronic pain.

Main Methods:

  • Review of existing literature on pain mechanisms.
  • Analysis of molecular signaling pathways in pain transduction and modulation.
  • Examination of cellular interactions in the periphery and central nervous system.

Main Results:

  • Acute pain transitions to chronic pain through distinct pathophysiological steps.
  • Peripheral sensitization involves upregulation of cyclooxygenase-2 (COX-2) and interleukin-1β (IL-1β).
  • Central sensitization involves N-methyl-D-aspartate (NMDA) receptor activation and microglial signaling.

Conclusions:

  • Prostaglandins, endocannabinoids, ion channels, and scavenger cells are crucial in acute to chronic pain transformation.
  • Understanding these molecular players is vital for developing treatments to ameliorate or reverse chronic pain.
  • Targeting these pathways may offer new therapeutic strategies for managing chronic pain conditions.