1
0The research article identifies the intrinsic cardiac nervous system (ICNS) as a vital regulatory hub, rather than a simple relay, that is essential for heart function and survival. By using advanced genetic and imaging techniques, the researchers discovered two distinct neuronal subtypes, Npy+ and Ddah1+, which possess unique anatomical and physiological roles. Npy+ neurons are responsible for parasympathetic heart rate control and maintaining baseline performance; their loss leads to catastrophic cardiac failure. In contrast, Ddah1+ neurons act as a protective mechanism during stressful conditions, ensuring electrical stability to prevent sudden cardiac arrest. These findings demonstrate that the ICNS integrates complex signals to manage both daily rhythm and emergency resilience. Ultimately, this discovery provides a molecular blueprint for developing more precise, cell-type-specific therapies for cardiovascular diseases.
References:
Xu Q J, Applegate M C, Hsu I U Y, et al. The intrinsic cardiac nervous system is essential for cardiac function and survival[J]. Cell, 2026.
