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Adipokines: New Therapeutic Target for Osteoarthritis?

  • Osteoarthritis (MB Goldring, Section Editor)
  • Published:
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Abstract

Purpose of the Review

Osteoarthritis (OA) is an aging-associated and injury-induced joint disease characterized by cartilage degradation, bone sclerosis, and persistent low-grade inflammation in the joint. Aging and injury are triggers of joint pathological changes mediated by pro-inflammatory factors, some of which are secreted by white adipose tissue. Adipokines including adiponectin, leptin, resistin, chemerin, IL-6, and TNF-α are major players not only during inflammation but also in metabolic regulation of joint cells including chondrocytes, osteoblasts, osteoclasts as well as mesenchymal stem cells. The purpose of this review is to summarize the signal transduction pathways of adipokines in the articular joint to provide new information on potential targets for intervention of OA.

Recent Findings

The risk of knee osteoarthritis is associated with adipokine gene polymorphism. While the infrapatellar fat pad is a major source of adipokines in knee synovial fluid, adipocytes also accumulate in the bone marrow during aging and obesity. Adipokines can act as SASPs (senescence associated secretory phenotype factors) that participate in cellular senescence of chondrocytes, but they also regulate energy metabolism impacting bone remodeling. Thus, adipokines are closely related to the metabolic syndrome and degenerative pathological changes in cartilage and bone during OA.

Summary

Modulating the effects of adipokines on different cell types in the intra-articular joint will be a promising new option for OA intervention.

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Grant sponsor: NIGMS/NIH; Grant number: P30GM122732

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  1. Bone and Joint Research Center, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China

    Chenxi Xie

  2. Department of Orthopaedics, Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, 02903, USA

    Qian Chen

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Xie, C., Chen, Q. Adipokines: New Therapeutic Target for Osteoarthritis?. Curr Rheumatol Rep 21, 71 (2019). https://doi.org/10.1007/s11926-019-0868-z

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