Association between arthropathies and postpartum hemorrhage: a bidirectional Mendelian randomization study

Area of Science:

• Reproductive Health
• Genetics
• Immunology

Background:

• Arthropathies are linked to adverse pregnancy outcomes.
• The specific association between arthropathies and postpartum hemorrhage (PPH) requires further investigation.

Purpose of the Study:

• To investigate the causal relationship between arthropathies and PPH using Mendelian randomization (MR).
• To identify potential biological pathways and genes involved in this association.

Main Methods:

• Utilized genome-wide association study (GWAS) data from the IEU OpenGWAS database.
• Performed bidirectional MR analysis with multiple statistical methods (MR-Egger, Weighted median, etc.).
• Conducted sensitivity analyses and gene enrichment analysis (GO, KEGG).

Main Results:

• Arthropathies were identified as a causal risk factor for PPH.
• Reverse MR analysis showed no causal effect of PPH on arthropathies.
• Sensitivity analyses confirmed the reliability of the findings, with no significant heterogeneity or pleiotropy.
• Enrichment analysis identified key biological processes and pathways, including regulation of response to biotic stimulus and natural killer cell-mediated cytotoxicity.

Conclusions:

• Arthropathies are a significant risk factor for PPH.
• The identified gene pathways provide a basis for understanding the molecular mechanisms linking arthropathies and PPH.
• Findings offer crucial insights for clinical reference and future research.