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Related Experiment Video

Updated: Jul 6, 2026

A Model to Simulate Clinically Relevant Hypoxia in Humans

A Model to Simulate Clinically Relevant Hypoxia in Humans

Published on: December 22, 2016

How does OA affect sepsis? An observational study and Mendelian randomization mediation analysis.

Dawei Xu¹, Junjie Chen², Fanrong Lin³

¹Trauma Center, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Osteoarthritis and Cartilage Open

|April 20, 2026

Summary

This summary is machine-generated.

Osteoarthritis (OA) did not show a direct link to sepsis in observational data. However, hip OA may increase sepsis risk, with metabolic factors like sphingomyelin acting as mediators.

Keywords:

Mediation analysis Mendelian randomization Osteoarthritis Sepsis

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Published on: May 10, 2024

Area of Science:

Medical research
Genetics
Epidemiology

Background:

Osteoarthritis (OA) and sepsis are significant health concerns.
Understanding their potential causal relationship and mediating factors is crucial for patient outcomes.

Purpose of the Study:

To investigate the causal links between osteoarthritis (OA) and sepsis.
To identify potential mediating factors, including immune cell phenotypes, metabolites, and inflammation.

Main Methods:

Utilized observational data from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database.
Conducted bidirectional Mendelian Randomization (MR) analysis using genome-wide association study (GWAS) data for OA, immune phenotypes, metabolites, inflammation, and sepsis.
Analyzed up to ~30 million SNPs for OA and ~12 million SNPs for sepsis outcomes.

Main Results:

Observational data showed no significant association between OA and sepsis.
Mendelian Randomization identified a causal effect of hip osteoarthritis on sepsis risk (OR: 1.09, P=0.024).
Sphingomyelin and X-24585 levels were identified as mediators between hip OA and sepsis risk.

Conclusions:

Hip osteoarthritis is a potential risk factor for sepsis.
Metabolic factors likely mediate the relationship between hip OA and sepsis.
Further research is needed to elucidate the underlying mechanisms.