AUTHOR=Zheng Qingcong , Wang Du , Lin Rongjie , Li Zhechen , Chen Yuchao , Chen Rongsheng , Zheng Chunfu , Xu Weihong 

TITLE=Effects of circulating inflammatory proteins on osteoporosis and fractures: evidence from genetic correlation and Mendelian randomization study

JOURNAL=Frontiers in Endocrinology

VOLUME=15

YEAR=2024

URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2024.1386556

DOI=10.3389/fendo.2024.1386556

ISSN=1664-2392

ABSTRACT=<sec><title>Objective</title><p>There is a controversy in studies of circulating inflammatory proteins (CIPs) in association with osteoporosis (OP) and fractures, and it is unclear if these two conditions are causally related. This study used MR analyses to investigate the causal associations between 91 CIPs and OP and 9 types of fractures.</p></sec><sec><title>Methods</title><p>Genetic variants data for CIPs, OP, and fractures were obtained from the publicly available genome-wide association studies (GWAS) database. We used inverse variance weighted (IVW) as the primary analysis, pleiotropy, and heterogeneity tests to analyze the validity and robustness of causality and reverse MR analysis to test for reverse causality.</p></sec><sec><title>Results</title><p>The IVW results with Bonferroni correction indicated that CXCL11 (OR = 1.2049; 95% CI: 1.0308-1.4083; <italic>P</italic> = 0.0192) can increase the risk of OP; IL-4 (OR = 1.2877; 95% CI: 1.1003-1.5070; <italic>P</italic> = 0.0016), IL-7 (OR = 1.2572; 95% CI: 1.0401-1.5196; <italic>P</italic> = 0.0180), IL-15RA (OR = 1.1346; 95% CI: 1.0163-1.2668; <italic>P</italic> = 0.0246), IL-17C (OR = 1.1353; 95% CI: 1.0272-1.2547; <italic>P</italic> = 0.0129), CXCL10 (OR = 1.2479; 95% CI: 1.0832-1.4377; <italic>P </italic>= 0.0022), eotaxin/CCL11 (OR = 1.1552; 95% CI: 1.0525-1.2678; <italic>P</italic> = 0.0024), and FGF23 (OR = 1.9437; 95% CI: 1.1875-3.1816; <italic>P</italic> = 0.0082) can increase the risk of fractures; whereas IL-10RB (OR = 0.9006; 95% CI: 0.8335-0.9730; <italic>P</italic> = 0.0080), CCL4 (OR = 0.9101; 95% CI: 0.8385-0.9878; <italic>P</italic> = 0.0242), MCP-3/CCL7 (OR = 0.8579; 95% CI: 0.7506-0.9806; <italic>P</italic> = 0.0246), IFN-γ [shoulder and upper arm (OR = 0.7832; 95% CI: 0.6605-0.9287; <italic>P</italic> = 0.0049); rib(s), sternum and thoracic spine (OR = 0.7228; 95% CI: 0.5681-0.9197; <italic>P</italic> = 0.0083)], β-NGF (OR = 0.8384; 95% CI: 0.7473-0.9407; <italic>P</italic> = 0.0027), and SIRT2 (OR = 0.5167; 95% CI: 0.3296-0.8100; <italic>P</italic> = 0.0040) can decrease fractures risk.</p></sec><sec><title>Conclusion</title><p>Mendelian randomization (MR) analyses indicated the causal associations between multiple genetically predicted CIPs and the risk of OP and fractures.</p></sec>