Multidimensional Plasma Lipids Affect Preeclampsia/Eclampsia: A Mendelian Randomization Study.

Area of Science:

• Biochemistry
• Genetics
• Obstetrics

Background:

• Circulating lipids are vital in pregnancy and linked to pregnancy-related diseases.
• Preeclampsia/eclampsia is a significant pregnancy complication with complex etiology.
• Understanding lipid profiles' role in preeclampsia is crucial for risk assessment and management.

Purpose of the Study:

• To investigate the causal relationship between plasma lipid levels and preeclampsia/eclampsia risk.
• To identify specific lipid species that influence susceptibility to preeclampsia/eclampsia.
• To explore potential therapeutic targets for preeclampsia/eclampsia based on lipid profiles.

Main Methods:

• A two-sample Mendelian randomization (MR) framework was utilized.
• Summary statistics from Finnish plasma lipidomics and FinnGen preeclampsia/eclampsia data were employed.
• Inverse variance weighted (IVW) analysis and sensitivity analyses were performed.

Main Results:

• 17 lipid species were associated with preeclampsia/eclampsia susceptibility.
• Six triacylglycerols (TAGs), one diacylglycerol (DAG), and three sphingomyelins (SMs) increased risk.
• Seven species, including phosphatidylcholines (PCs) and phosphatidylethanolamines (PEAs) with arachidonic acid, reduced risk.

Conclusions:

• Specific plasma lipid species have a causal impact on preeclampsia/eclampsia risk.
• Findings provide enhanced resolution for preeclampsia/eclampsia risk assessment.
• Identified lipids may serve as potential therapeutic targets for preeclampsia/eclampsia.