Table 4.

SOD Activity and MDA Content of Each Group

Group	n	MDA (nmol/mg)	SOD (U/mg)
Sham	6	1.17±0.26	100.53±6.47
CME	6	3.21±0.36*	62.71±5.31*
low	6	2.36±0.43*#a	78.90±2.38*#a
High	6	1.75±0.10*#	85.12±2.70*#

Notes: Alprostadil injection improved myocardial antioxidant ability following CME. The results are presented as the mean±standard deviation (SD) of at least three independent experiments. *P<0.05, compared with Sham group; ^#P<0.05, compared with CME group; ^aP<0.05, compared with High group.

Abbreviations: CME, coronary microembolization; Low, CME plus alprostadil injection (2 μg/kg); High, CME plus alprostadil injection (4 μg/kg); MDA, malondialdehyde; SOD, superoxide dismutase.