Protective effects of allicin on acute cerebral ischemia-reperfusion injury in rats

Aim To study the protective effects of allicin on acute cerebral ischemia reperfusion injury. Methods The model of cerebral ishemia-3 h/reperfusion-24 h was induced by middle cerebral artery occlusion(MCAO) in SD rats. Allicin(10,20 mg·kg -1) was administered once daily in rats:at 0 h of reperfusion. After 24 h reperfusion, the content of malondialdehyde(MDA),the activities of superoxide dismutase(SOD),GSH and myeloperoxidase(MPO) in brain tissue,the content of NO in plasma were measured. Results Compared with vehicle group, the activity of SOD was increased from 205.87±16.52 to 259.77±19.65 and 284.54±21.79 by allicin 10,20 mg·kg -1; the MDA content was decreased from 38.69±0.10 to 28.68±1.37 and 20.97±0.44 respectively; the GSH content was increased from 28.31±0.64 to 36.19±1.12 and 47.96±0.44 respectively; the NO content was decreased from 29.7±0.49 to 27.38±1.46 and 23.00±0.71 respectively; the MPO content was decreased from 0.29±3.06×10 -2 to 0.26±2.13×10 -2 and 0.23±7.52×10 -2 respectively. Conclusion The protective effects of allicin on acute cerebral ischemia reperfusion injury may be related to increasing antioxidase activities,decreasing lipid peroxidative damage and inhibiting inflammation reaction.