Researchers led by Danxia Yu of Vanderbilt University Medical Center announced on March 17 that they have found a statistical association between bloodstream levels of nine specific molecules produced by gut microbes and the risk of developing coronary heart disease. The findings were published in the open-access journal PLOS Medicine.
The study is significant because it highlights how certain metabolites, which are chemicals produced by gut microbes during normal metabolic processes, may influence a person's likelihood of being diagnosed with coronary heart disease. Coronary heart disease remains the leading cause of death worldwide, making these findings relevant for public health and future research.
Yu and her colleagues analyzed blood samples from several thousand adults of Black, White, and Asian backgrounds from both the United States and Shanghai, China. The researchers first identified potential links between gut microbe metabolites and heart disease risk using data from nearly 2,000 participants. They then validated these associations using additional data sets while accounting for other known risk factors such as age, family history, and diet.
The final results showed that nine specific metabolites in the bloodstream were linked to either an increased or decreased chance of developing coronary heart disease. These associations remained consistent across some groups when considering lifestyle or family history but varied when stratified by race or age.
The authors said their work is "one of the most comprehensive metabolomics studies to date, encompassing discovery, in silico validation, and quantitative validation across individuals from diverse ethnic backgrounds and geographic regions." They added: "Our findings underscore the importance of gut microbial metabolism in cardiovascular disease development and highlight promising molecules that may serve as novel biomarkers or therapeutic targets for future mechanistic and interventional studies."
Looking ahead, the researchers call for further investigation into these nine metabolites to determine if they could lead to new ways to treat or prevent coronary heart disease.
