Every heart muscle cell, or cardiomyocyte, is studded with tiny, intricate structures called dyads. The dyads are like orchestra conductors: They coordinate incoming electrical signals with release of ...

After birth, the human heart loses its regenerative capacity almost completely. Damage to the heart muscle—for example, due to a heart attack—therefore usually leads to a permanent loss of function in ...

Japanese researchers have transplanted human induced pluripotent stem cells (iPSCs) in a primate model of myocardial infarction and were able to restore heart muscle and function in monkeys. Developed ...

People with PAH often have problems in the tiny blood vessels that deliver oxygen and nutrients to heart cells, according to a study.