ArticleActa biochimica et biophysica Sinica2024
κ-Opioid receptor activation attenuates osteoarthritis synovitis by regulating macrophage polarization through the NF-κB pathway.
Article in Acta biochimica et biophysica Sinica, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.
- A bibliometric analysis of studies related to the nuclear factor kappa B signaling pathway in knee osteoarthritis between 2004 and 2023.Frontiers in medicine · 2025Pooled it
- Opioids regulate the functional state of immune cells and reduce inflammatory cardiac injury: Role of opioid receptors, MRGPRX2, and TLR4.Journal of biomedical research · 2026Article
- Luteolin reprograms macrophage polarization via the STING-TBK1 pathway to accelerate bone repair.Acta biochimica et biophysica Sinica · 2026Article
- Macrophage κ-opioid receptor inhibits hypoxic pulmonary hypertension progression and right heart dysfunction via an SCD1-dependent anti-inflammatory response.Genes & diseases · 2026Article
- Review
- Macrophage Polarization in the Osteoarthritis Pathogenesis and Treatment.Orthopaedic surgery · 2025Review
- κ-opioid receptor: from analgesic target to neuroimmune hub.Frontiers in pharmacology · 2025Review
- Battling pain from osteoarthritis: causing novel cell death.Acta biochimica et biophysica Sinica · 2024Review
- Activation of kappa opioid receptor suppresses post-traumatic osteoarthritis via sequestering STAT3 on the plasma membrane.Cell communication and signaling : CCS · 2024Article
- Subchondral osteoclasts and osteoarthritis: new insights and potential therapeutic avenues.Acta biochimica et biophysica Sinica · 2024Review
- Therapeutic Efficacy of Medicinal Plants with Allopathic Medicine in Musculoskeletal Diseases.International journal of plant, animal and environmental sciences · 2024Article
- The common link between sleep apnea syndrome and osteoarthritis: a literature review.Frontiers in medicine · 2024Review
Corrections and comments
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Authors and funding
14 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Osteoarthritis (OA) is a prevalent and chronic joint disease that affects the aging population, causing pain and disability. Macrophages in synovium are important mediators of synovial inflammatory activity and pathological joint pain. Previous studies have demonstrated the significant involvement of κ-opioid receptor (KOR) in the regulation of pain and inflammation. Our study reveals a significant reduction in synovial KOR expression among patients and mice with OA. Here, we find that KOR activation effectively inhibits the expressions of the LPS-induced-inflammatory cytokines TNF-α and IL-6 by inhibiting macrophage M1 phenotype. Mechanistically, KOR activation effectively suppresses the proinflammatory factor secretion of macrophages by inhibiting the translocation of NF-κB into the nucleus. Our animal experiments reveal that activation of KOR effectively alleviates knee pain and prevents synovitis progression in OA mice. Consistently, KOR administration suppresses the expressions of M1 macrophage markers and the NF-κB pathway in the synovium of the knee. Collectively, our study suggests that targeting KOR may be a viable strategy for treating OA by inhibiting synovitis and improving joint pain in affected patients.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.