Table 1. Survival and LDH activity of the cardiomyocytes (x̄ ± s, n = 3).

Group	Survive rate (%)	LDH inmedium (U/L)
Control	96.45 ± 2.18	141.61 ± 12.33
H/R 2 h	72.51 ± 6.31*	756.23 ± 61.31*
H/R 4 h	65.37 ± 5.23#	892.46 ± 112.45#
H/R 6 h	60.66 ± 5.48#	1145.67 ± 154.83#
H/R 12 h	56.49 ± 5.12#	1107.88 ± 152.66#
H/R 24 h	52.13 ± 5.76#	1137.66 ± 148.73#

* p < 0.05, ^# p < 0.01 vs. control.

H/R 2h, hypoxia for 5 hours/reoxygenation for 2 hours; H/R 4h, hypoxia for 5 hours/reoxygenation for 4 hours; H/R 6h, hypoxia for 5 hours/reoxygenation for 6 hours; H/R 12h, hypoxia for 5 hours/reoxygenation for 12 hours; H/R 24h, hypoxia for 5 hours/reoxygenation for 24 hours; LDH, lactic dehydrogenase.