“…The plasma glucose level measured by the enzymatic method (Gluneo, Shinotest Co., Ltd.) was 485±1 3 mg/dl. Then after thoracotomy, the hearts were quickly removed and perfused with the Langendorff apparatus as described in the previous report (9). The perfusate was Krebs-Henseleit solu tion (pH 7.4, 36°C) containing 120 mM NaCI, 4.8 mM KCI, 1.25 mM CaC12, 1.2 mM MgSO4, 1.2 mM KH2PO4, 11 mM glucose and 25 mM NaHCO3, equilibrated with 95% 02 5% C02…”