Causal relationship between plasma lipidome and rosacea: a Mendelian randomization analysis

Area of Science:

• Dermatology
• Metabolomics
• Genetics

Background:

• Rosacea is a prevalent chronic inflammatory skin condition.
• Existing research on the association between plasma lipidome and rosacea is limited.
• Understanding these links is crucial for developing targeted therapies.

Purpose of the Study:

• To investigate the causal relationship between plasma lipidome and rosacea.
• To identify specific lipid species that may influence rosacea development or progression.
• To provide evidence for potential therapeutic targets.

Main Methods:

• A two-sample Mendelian randomization (MR) study design was employed.
• Genome-wide association study (GWAS) data for plasma lipidome and rosacea were analyzed.
• Multiple MR methods (IVW, MR-Egger, weighted median) and sensitivity analyses (Cochran's Q, MR-PRESSO) were used to ensure robustness.

Main Results:

• Out of 179 analyzed lipid species, five showed a significant causal association with rosacea (P < 0.05).
• These included two sterol esters, two phosphatidylethanolamines, and one sphingomyelin.
• All identified lipid species demonstrated a protective role in rosacea.

Conclusions:

• This study establishes a novel causal link between specific plasma lipid species and rosacea.
• The identified lipid species may serve as protective factors in rosacea.
• These findings suggest potential novel therapeutic strategies for managing rosacea.