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Related Experiment Video

Updated: Sep 23, 2025

The Monoiodoacetate Model of Osteoarthritis Pain in the Mouse
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Osteoarthritis Pain.

Huan Yu1,2, Tianwen Huang3, William Weijia Lu1,4

  • 1Faculty of Pharmaceutical Science, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.

International Journal of Molecular Sciences
|May 14, 2022
PubMed
Summary
This summary is machine-generated.

Osteoarthritis (OA) joint pain significantly impacts quality of life, yet current treatments offer limited relief and side effects. This review explores undefined OA pain mechanisms, including key molecular pathways and preclinical models, to guide new drug development.

Keywords:
CCL2/CCR2CGRPIL-1βNGF/TrkANLRP3TNF-αosteoarthritispainβ-catenin

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Area of Science:

  • Orthopedics
  • Pain Medicine
  • Molecular Biology

Background:

  • Joint pain is a primary symptom of osteoarthritis (OA), severely affecting patients' quality of life and function.
  • Existing OA pain management strategies provide inadequate relief and carry risks of significant side effects with chronic use.
  • The complex mechanisms underlying OA pain are not fully understood, necessitating further investigation.

Purpose of the Study:

  • To review the characteristics and underlying mechanisms of osteoarthritis (OA) pain.
  • To evaluate specific molecular pathways implicated in OA pain, including NGF/TrkA, CGRP, CCL2/CCR2, TNF-α, IL-1β, NLRP3 inflammasome, and Wnt/β-catenin signaling.
  • To discuss current animal models and emerging preclinical studies for OA pain research.

Main Methods:

  • Literature review focusing on OA pain mechanisms.
  • Evaluation of signaling pathways involved in OA pain.
  • Analysis of preclinical OA pain models.

Main Results:

  • Several molecular pathways, including nerve growth factor (NGF)/tropomyosin receptor kinase A (TrkA) and calcitonin gene-related peptide (CGRP), are associated with OA pain.
  • Inflammatory mediators like tumor necrosis factor alpha (TNF-α), interleukin-1beta (IL-1β), and the NLRP3 inflammasome play roles in OA pain.
  • The Wnt/β-catenin signaling pathway is also implicated in the complex mechanisms of OA pain.

Conclusions:

  • Understanding the multifactorial nature of OA pain is crucial for developing effective treatments.
  • Identifying specific molecular targets could lead to novel, targeted therapies for OA pain management.
  • Further research into preclinical models and molecular pathways is essential for advancing OA pain relief.