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07-12-2024 | Osteoarthritis of the Hip | ORIGINAL ARTICLE

Causal effects of circulating inflammatory proteins on knee and hip osteoarthritis: A two sample Mendelian randomization study

Authors: Rongjie Lin, Qingcong Zheng, Rui Zhang, Quan Liu, Jianlong Lin, Shaohuang Weng, Min Chen

Published in: Clinical Rheumatology | Issue 1/2025

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Abstract

Introduction

Numerous circulating proteins are linked to the presence or severity of joint inflammation. However, traditional studies could not explain whether these protein biomarkers are proximate to disease progression.

Method

We conducted a study to explore the causal effects of 91 circulating inflammation-related proteins (CIPs) on knee osteoarthritis (KOA) and hip osteoarthritis (HOA), using two-sample Mendelian randomization (MR). The primary analysis utilized the inverse variance weighted (IVW) method, augmented by complementary approaches including weighted median, weighted mode, simple median, MR-Egger, and MR-PRESSO analysis. Sensitivity analysis validated the robustness of the results and ensured the absence of heterogeneity and horizontal pleiotropy.

Results

We identified 2 CIPs with a causal effect on KOA, including CXCL9 (OR = 1.249, 95% CI = 1.046–1.492, P = 0.014) and TNF-β (OR = 1.105, 95% CI = 1.014–1.204, P = 0.023). Additionally, 3 CIPs were found to have a causal effect on HOA, including CXCL6 (OR = 1.058, 95% CI = 1.004–1.116, P = 0.035), RANKL (OR = 1.067, 95% CI = 1.002–1.137, P = 0.044), and VEGFA (OR = 1.072, 95% CI = 1.008–1.140, P = 0.027).

Conclusions

In the current study, our findings indicated that CXCL9 and TNF-β had the potential to influence the risk of KOA, while CXCL6, RANKL, and VEGFA could impact the risk of HOA. These discoveries underscored the significance of these proteins as potential targets for intervention in the prevention and treatment of KOA and HOA.
Key Points
• We presented genetic evidence supporting a causal link between circulating inflammatory proteins associated with joint inflammation using MR methods.
• 5 CIPs have demonstrated promotive effects on the occurrence of KOA and HOA.
Appendix
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Literature
16.
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go back to reference Proost P, De Wolf-Peeters C, Conings R et al (1993) Identification of a novel granulocyte chemotactic protein (GCP-2) from human tumor cells. In vitro and in vivo comparison with natural forms of GRO, IP-10, and IL-8. J Immunol 150(3):1000–1010CrossRefPubMed Proost P, De Wolf-Peeters C, Conings R et al (1993) Identification of a novel granulocyte chemotactic protein (GCP-2) from human tumor cells. In vitro and in vivo comparison with natural forms of GRO, IP-10, and IL-8. J Immunol 150(3):1000–1010CrossRefPubMed
Metadata
Title
Causal effects of circulating inflammatory proteins on knee and hip osteoarthritis: A two sample Mendelian randomization study
Authors
Rongjie Lin
Qingcong Zheng
Rui Zhang
Quan Liu
Jianlong Lin
Shaohuang Weng
Min Chen
Publication date
07-12-2024
Publisher
Springer International Publishing
Published in
Clinical Rheumatology / Issue 1/2025
Print ISSN: 0770-3198
Electronic ISSN: 1434-9949
DOI
https://doi.org/10.1007/s10067-024-07232-8

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