HMGB1 and ischemic cardiomyopathy: [I] Survival of donor BMCs was largely limited, indicating that there was a considerable amount of donor cell death; [II] In this model of ischemic cardiomyopathy, death/damage of host cells in the heart and other organs by BMC injection is unlikely to be substantial; [III] There was an increased level of circulating HMGB1 as early as 1 hour after BMC injection.