Cardiomyocyte orientation recovery at micrometer scale reveals long-axis fiber continuum in heart walls.

ABSTRACT: Coordinated cardiomyocyte contraction drives the mammalian heart to beat and circulate blood. No consensus model of cardiomyocyte geometrical arrangement exists, due to the limited spatial resolution of whole heart imaging methods and the piecemeal nature of studies based on histological sections. By combining microscopy and computer vision, we produced the first-ever three-dimensional cardiomyocyte orientation reconstruction across mouse ventricular walls at the micrometer scale, representing a gain of three orders of magnitude in spatial resolution. We recovered a cardiomyocyte arrangement aligned to the long-axis direction of the outer ventricular walls. This cellular network lies in a thin shell and forms a continuum with longitudinally arranged cardiomyocytes in the inner walls, with

SUBMITTER: Dileep D 

PROVIDER: S-EPMC10548172 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature