Clonal Hematopoiesis, Inflammaging, And Vascular Disease: Mechanisms, Risk Stratification, And Therapeutic Frontiers In Older Adults
As we age, our bodies undergo many changes, some of which can increase our risk for various diseases. One such change involves our blood-forming stem cells, which can acquire genetic mutations over time. When these mutated cells multiply and become more prevalent in the blood, it’s a condition known as clonal hematopoiesis of indeterminate potential, or CHIP. While not a blood cancer itself, CHIP is increasingly recognized as a significant factor in the development of other age-related health issues.
Research shows that CHIP is strongly linked to an increased risk of cardiovascular diseases, including heart attacks, strokes, and heart failure. This connection appears to be driven by inflammation. Aging is often accompanied by a chronic, low-grade inflammatory state, sometimes called “inflammaging.” The mutated blood cells in CHIP contribute to and amplify this inflammation, creating an environment that accelerates damage to blood vessels and promotes the buildup of plaque in arteries.
Specific genetic changes, such as mutations in genes like TET2, DNMT3A, and ASXL1, are often found in individuals with CHIP and play a key role in driving these inflammatory processes. Understanding CHIP offers a new perspective on how aging contributes to heart disease. This knowledge could lead to better ways of identifying individuals at higher risk and developing personalized strategies to prevent and treat cardiovascular conditions in our aging population.
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