Health World

A new study has shed light on the role of genetic variations in the development of hypertrophic cardiomyopathy, one of the leading causes of sudden cardiac death that can affect individuals who are otherwise healthy and highly fit. This discovery enhances scientists’ understanding of the mechanisms that lead to sudden cardiac arrest and opens the door to more accurate diagnostic tools and, potentially, future treatments targeting the genetic causes of the disease. The study examined the impact of genetic variations in a protein known as alpha-actinin-2 (ACTN2), which plays a fundamental role in heart muscle function.

Researchers analyzed 17 genetic variations in the ACTN2 protein, in collaboration with scientists from the University of Oxford and the Harwell Research Campus, using a range of advanced laboratory techniques. The results showed that these variations do not all have the same effect: some weaken protein stability, increase its tendency to aggregate, and reduce its ability to interact with other molecules within the cell, thereby impairing heart muscle efficiency.

The study also found that the impact of these variations depends on their location within the protein. Researchers identified a region known as the actin-binding domain (ABD) as the most sensitive to such changes, given its critical role in linking the protein to cellular components and maintaining normal function.

Katia Gimlich noted that hypertrophic cardiomyopathy often affects healthy individuals with high levels of physical fitness and can lead to serious consequences. She added that the findings represent an important step toward understanding the impact of these genetic variations on heart proteins and may help in developing new approaches to treating the disease in the future.

Source: Medical Xpress