Key result
The IKK inhibitor IMD-0560 significantly improved cardiac function and suppressed chronic ventricular remodeling compared with vehicle in a rat myocardial ischemia model.
Why the study?
Does IKK blockade with IMD-0560 improve cardiac function and suppress ventricular remodeling in a rat myocardial ischemia model?
Does IKK blockade with IMD-0560 improve cardiac function and suppress ventricular remodeling in a rat myocardial ischemia model?
IKK blockade with IMD-0560 improves cardiac function and suppresses chronic ventricular remodeling in a rat model of myocardial ischemia.
Hypothesis-generating for IKK inhibition in ischemic remodeling; prospective human trials needed before clinical adoption.
OBJECTIVE: Amplification of inflammatory response in the non-infarct area plays an important role in the pathogenesis of ventricular remodeling after myocardial ischemia. Activation of nuclear factor-kappa B (NF-kappaB) is involved in this amplification through a positive feedback loop of pro- inflammatory cytokines. We investigated the efficacy of IKK blockade with IMD-0560, a novel inhibitor of IKK, in a rat myocardial ischemia model. METHODS/RESULTS: Left coronary artery occlusion (28 days) was carried out in Sprague-Dawley rats. Daily intraperitoneal injections of IMD-0560 (5 mg/kg) were done after the operation. Treatment with IMD-0560 significantly improved cardiac function as indicated by the preservation of fractional shortening and lower serum brain natriuretic peptide level. Histological analysis showed that IMD-0560 treatment suppressed thinning in the infarcted area compared with vehicle-treated hearts. Moreover, in situ zymography showed matrix metalloprotease-9 activity was inhibited in the infarct area. CONCLUSION: We revealed that the IKK blockade is potent for the suppression of chronic ventricular remodeling after myocardial ischemia.
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Wakatsuki et al. (2008) studied Myocardial ischemia and ventricular remodeling. IMD-0560 vs. Vehicle was evaluated on Cardiac function and ventricular remodeling. The IKK inhibitor IMD-0560 significantly improved cardiac function and suppressed chronic ventricular remodeling compared with vehicle in a rat myocardial ischemia model.
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