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Related Concept Videos

The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

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Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
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Related Experiment Video

Updated: Jul 30, 2025

A Reproducible Cartilage Impact Model to Generate Post-Traumatic Osteoarthritis in the Rabbit
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A Reproducible Cartilage Impact Model to Generate Post-Traumatic Osteoarthritis in the Rabbit

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Posttraumatic osteoarthritis: from basic science to clinical implications.

Justin M Haller1, Marjolein C H van der Meulen2, Steven Olson3

  • 1Department of Orthopaedic Surgery, University of Utah, Salt Lake City, UT.

OTA International : the Open Access Journal of Orthopaedic Trauma
|May 11, 2023
PubMed
Summary
This summary is machine-generated.

Posttraumatic osteoarthritis (PTOA) develops after joint injury, unlike primary osteoarthritis. Research into subchondral bone, inflammation, and mechanics advances understanding and potential biological treatments for PTOA.

Keywords:
inflammatory responseposttraumatic osteoarthritis

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Area of Science:

  • Orthopedics
  • Rheumatology
  • Biomedical Engineering

Background:

  • Posttraumatic osteoarthritis (PTOA) is a distinct form of osteoarthritis initiated by joint injury.
  • PTOA involves the degradation of articular cartilage and subchondral bone, differing from primary osteoarthritis.
  • Despite surgical advancements, preventing PTOA remains a challenge.

Purpose of the Study:

  • To summarize current understanding of PTOA pathogenesis.
  • To highlight recent research in subchondral bone, inflammation, and joint mechanics related to PTOA.
  • To explore emerging biological therapies for PTOA.

Main Methods:

  • Review of current scientific literature on PTOA.
  • Analysis of research findings in subchondral bone, inflammatory pathways, and biomechanics.
  • Exploration of preclinical and clinical data on biological agents.

Main Results:

  • PTOA is characterized by structural damage and altered joint mechanics post-injury.
  • Inflammatory responses play a significant role in PTOA development.
  • Advances in understanding subchondral bone changes are crucial.
  • Biological agents show promise for therapeutic intervention.

Conclusions:

  • PTOA is a complex condition requiring a multifaceted research approach.
  • Further investigation into the interplay of mechanical stress, inflammation, and bone remodeling is needed.
  • Biological therapies represent a promising avenue for mitigating PTOA progression.