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Inference of a causal relation between low-density lipoprotein cholesterol and hypertension using mendelian randomization analysis.

Authors:
Tae-Hwa Go Kyeong Im Kwak Ji-Yun Jang Minheui Yu Hye Sim Kim Jang Young Kim Sang Baek Koh Dae Ryong Kang

Clin Hypertens 2021 Feb 26;27(1). Epub 2021 Feb 26.

Center of Biomedical Data Science, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.

Background: It is known in some studies that higher the LDL-C, the greater the risk of developing cardiovascular disease. However, studies of the causal effects between LDL-C and hypertension are limited by their observational study design, and genetic epidemiology studies of associations between LDL-C and hypertension are lacking, as are studies using data for Koreans. In this study, we confirmed the causal effect of LDL-C on hypertension using Korean chip data.

Method: The epidemiology and genotype data were collected from the Korean Genome and Epidemiology Study conducted by the Korea National Institute of Health and covered 20,701 subjects. Single-nucleotide polymorphisms associated with LDL-C were selected (p-value < 5 × 10) from the Global Lipids Genetics Consortium database, and Mendelian randomization analysis (MRA) was performed with counted genetic risk scores and weighted genetic risk scores (WGRSs) for 24 single-nucleotide polymorphisms.

Result: The assumptions for MRA were statistically confirmed, and WGRSs showed a strong association with LDL-C. Interestingly, while the relationship between LDL-C and hypertension was not statistically significant in the observational study, MRA study demonstrated that the risk of hypertension increased as LDL-C increased in both men and women.

Conclusions: The results of this study confirmed that the relationship between LDL-C and hypertension is greatly influenced by genetic information.

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Source
http://dx.doi.org/10.1186/s40885-021-00162-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7913402PMC
February 2021

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