Table 1.

The effect of citric acid on myocardial ischemia/reperfusion injury in rats ($\overline{x}\pm s$, n = 10).

Groups	Dosage (mg/kg)	Infarction of the ventricle (%)	Infarction of the heart (%)	Infarction area (mm2)	Infarction weight (g)
Sham	—	0.00 ± 0.00	0.00 ± 0.00	0.00 ± 0.00	0.000 ± 0.000
Model control	—	17.30 ± 3.58##	11.98 ± 2.20##	49.75 ± 9.14##	0.086 ± 0.017##
Diltiazem	16	8.23 ± 2.50**	5.33 ± 1.11**	21.90 ± 4.78**	0.038 ± 0.007**
Clopidogrel	13.5	11.35 ± 2.71**	8.52 ± 1.77**	35.17 ± 9.74**	0.064 ± 0.015*
Citric acid	500	12.16 ± 4.27**	8.80 ± 3.41**	36.18 ± 15.23**	0.064 ± 0.026*
	250	11.80 ± 3.67**	8.83 ± 3.09**	33.97 ± 10.99**	0.063 ± 0.022**

^## P < 0.01 versus sham, **P < 0.01, *P < 0.05 versus model control.