Exercise-induced CITED4 expression is necessary for regional remodeling of cardiac microstructural tissue helicity.

ABSTRACT: Both exercise-induced molecular mechanisms and physiological cardiac remodeling have been previously studied on a whole heart level. However, the regional microstructural tissue effects of these molecular mechanisms in the heart have yet to be spatially linked and further elucidated. We show in exercised mice that the expression of CITED4, a transcriptional co-regulator necessary for cardioprotection, is regionally heterogenous in the heart with preferential significant increases in the lateral wall compared with sedentary mice. Concordantly in this same region, the heart's local microstructural tissue helicity is also selectively increased in exercised mice. Quantification of CITED4 expression and microstructural tissue helicity reveals a significant correlation across both sedentary and

SUBMITTER: Eder RA 

PROVIDER: S-EPMC9253017 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature