Potential Causal Association between Plasma Metabolites, Immunophenotypes, and Female Reproductive Disorders: A...

Area of Science:

• Reproductive Biology
• Metabolomics
• Immunology
• Genetics

Background:

• Metabolism and immune cells are implicated in female reproductive diseases, but causal links are unclear.
• Establishing causality is crucial for understanding and treating conditions like gestational diabetes, infertility, and ectopic pregnancy.

Approach:

• Utilized a bidirectional two-sample Mendelian randomization study.
• Employed instrumental variables for metabolites and immunophenotypes from large genome-wide association study meta-analyses.
• Analyzed data from FinnGen for 14 female reproductive disorders, with rigorous sensitivity analyses.

Key Points:

• Elevated mannose levels causally increase gestational diabetes risk (OR 6.02).
• Increased CD28-CD25++CD8+ T cells are linked to higher female infertility risk (OR 1.26).
• Higher NKT cell counts are associated with reduced ectopic pregnancy risk (OR 0.87).

Conclusions:

• Mannose shows potential as a biomarker and therapeutic target for gestational diabetes.
• Findings integrate metabolomic and genomic data to illuminate immune-metabolic pathways in reproductive health.