Causal Relationships Between Vitamin E and Multiple Kidney Diseases: Evidence from Trans-ethnic Mendelian Randomization Study

Overview

Journal Eur J Nutr

Specialty Nutritional Sciences

Date 2024 Jul 25

PMID 39052079

Authors

Qi-Gang Lan

Yi Liang

Liang Liu

Hai-Lun Xie

Rui Wang

Jing-Hong Zhao

Bo Liang

Affiliations

Soon will be listed here.

Abstract

Purpose: The association between vitamin E and the risk of kidney disease is well documented in observational studies, but the role of vitamin E in kidney disease remain inconclusive. Here, we evaluated the causal effect of vitamin E on the risk of multiple kidney diseases, including chronic kidney disease, membranous nephropathy, diabetic nephropathy, IgA nephropathy, and dialysis.

Methods: We conducted a two-sample Mendelian randomization analysis from large-scale trans-ancestry genome-wide association studies to determine whether there was a significant causal relationship between vitamin E and multiple kidney diseases in European, American, and Asian ancestry. Instrumental genetic variants associated with vitamin E were selected, and summary statistic-based methods of inverse variance weighted, MR Egger, weighted median, simple mode, and weighted mode methods were conducted. Pleiotropy and sensitivity were assessed.

Results: We obtained 87 instrumental genetic variants in European ancestry and found no causal relationship between vitamin E and chronic kidney disease, membranous nephropathy, diabetic nephropathy, IgA nephropathy, and dialysis with no heterogeneity and pleiotropy. We obtained 18 instrumental genetic variants in Asian ancestry and vitamin E had no causal relationship with membranous nephropathy, diabetic nephropathy, and IgA nephropathy with no heterogeneity and pleiotropy. In African ancestry, 25 instrumental genetic variants were obtained and no causal relationship was identified with no heterogeneity and pleiotropy.

Conclusion: Our study first suggested plausible non-causal associations between vitamin E and multiple kidney diseases among different ancestry.

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