Aging influences cardiac mitochondrial gene expression and cardiovascular function following hemorrhage injury.

ABSTRACT: Cardiac dysfunction and mortality associated with trauma and sepsis increase with age. Mitochondria play a critical role in the energy demand of cardiac muscles, and thereby on the function of the heart. Specific molecular pathways responsible for mitochondrial functional alterations after injury in relation to aging are largely unknown. To further investigate this, 6- and 22-month-old rats were subjected to trauma-hemorrhage (T-H) or sham operation and euthanized following resuscitation. Left ventricular tissue was profiled using our custom rodent mitochondrial gene chip (RoMitochip). Our experiments demonstrated a declined left ventricular performance and decreased alteration in mitochondrial gene expression with age following T-H and we have identified c-Myc, a pleotropic transcription

SUBMITTER: Jian B 

PROVIDER: S-EPMC3105128 | biostudies-literature | 2011 May-Jun

REPOSITORIES: biostudies-literature