The genetically predicted causal relationship of inflammatory bowel disease with bone mineral density and osteoporosis: evidence from two-sample Mendelian randomization

Many existing studies indicated that patients with inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), tend to have the risk of low total body bone mineral density (BMD), and are more likely to have osteoporosis (OS). To determine the causal relationshi...

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Bibliographic Details
Published in:Frontiers in immunology 2023-05, Vol.14, p.1148107-1148107
Main Authors: Xu, Dengyong, Chen, Yao, Gao, Xing, Xie, Weidong, Wang, Ya, Shen, Jiaying, Yang, Guang, Xie, Binbin
Format: Article
Language:English
Subjects:
Bone Density - genetics
Bone Diseases, Metabolic
bone mineral density
Colitis, Ulcerative - genetics
Crohn Disease - complications
Crohn Disease - genetics
Crohn’s disease
Genome-Wide Association Study
Humans
Immunology
inflammatory bowel disease
Inflammatory Bowel Diseases - complications
Inflammatory Bowel Diseases - genetics
Mendelian randomization
Mendelian Randomization Analysis
osteoporosis
Osteoporosis - genetics
ulcerative colitis
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Summary:Many existing studies indicated that patients with inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), tend to have the risk of low total body bone mineral density (BMD), and are more likely to have osteoporosis (OS). To determine the causal relationship between IBD and bone metabolic disorders, we herein performed a two-sample Mendelian randomization analysis (TSMR) using publicly available summary statistics. Summary statistics of total body BMD, OS and IBD were downloaded from the Open Genome-Wide Association Study (GWAS), FinnGen consortium and International Inflammatory Bowel Disease Genetics Consortium (IIBDGC). The European and East Asian populations have consisted in this Mendelian Randomization (MR) work. A range of quality control procedures were taken to select eligible instrument SNPs closely associated with total body BMD, OS and IBD. To make the conclusions more reliable, we applied five robust analytical methods, among which the inverse variance weighting (IVW) method acted as the major method. Besides, heterogeneity, pleiotropy and sensitivity were evaluated. In the European population, the genetic association of UC on total body BMD (OR=0.97, 95%CI=0.96,0.99, P
ISSN:1664-3224
1664-3224
DOI:10.3389/fimmu.2023.1148107