ISSN: 2155-9880
+44 1300 500008
Jun Yao Liu
Tanzania
Research Article
Pressure Overload Promotes HMGB1 Signaling in the Ischemic-reperfused Heart
Author(s): Babak Baban, Jun Yao Liu and Mahmood S Mozaffari
Babak Baban, Jun Yao Liu and Mahmood S Mozaffari
Damage-Associated Molecular Patterns (DAMPs) are released following tissue injury and can activate proinflammatory pathways. Prototypical DAMPs include the High-Mobility Group Box 1 (HMGB1) protein which is released from necrotic cells. In turn, HMGB1 promotes inflammation via mechanisms likely involving phosphorylation/ activation of c-Jun-NH2-Terminal Kinase (JNK) and production of the inflammasome-associated cytokine, interleukin- 1β (IL-1β). We have shown that pressure overload increases infarct size in association with poorer functional recovery of the heart subjected to an ischemia-reperfusion insult. This study tested the hypothesis that pressure overload augments HMGB1 expression in association with increased IL-1β generation and JNK phosphorylation thereby contributing to increased tissue injury. Accordingly, hearts of male Sprague-Dawley rats were subjected to.. View More»
DOI:
10.4172/2155-9880.1000286