Reducing Damage Inside Heart Cells Improves Heart Function in Experimental Study

Dilated cardiomyopathy is a condition in which the heart's main pumping chamber becomes enlarged and weakened. This can reduce the heart's ability to pump blood effectively and may lead to heart failure or dangerous heart rhythms. Some forms are associated with genetic changes, including changes affecting lamin A/C proteins, which help maintain the structure of a cell's nucleus.

The Cornell-led study investigated whether reducing damage to the nuclei of heart muscle cells could improve outcomes even when the underlying lamin A/C deficiency remained. In the mouse model, reducing nuclear rupture improved heart function, extended survival and restored the activity of many genes whose expression had been altered by the disease.

The researchers also examined existing data from human hearts and found some similar gene-expression patterns. However, the intervention was tested in mice, not as an established treatment in patients. Further research is needed to determine whether the approach can be translated safely to humans and whether it could help other forms of heart disease.

Patients with inherited cardiomyopathy should continue specialist monitoring and follow their prescribed treatment plan. The study represents a possible research direction, not a new approved therapy.