To explore the interventional effect of tanshinone on glutamic acid content in spinal cord and in serum and neurological function in a rat model of spinal cord ischemia/reperfusion injury. METHODS AND RESULTS: A total of 88 Sprague Dawley rats were randomly divided into a sham operation(n=8),model(n=40),and tanshinone(n=40) groups.Abdominal aorta occlusion was performed along the right renal arterial root using a Scoville-Lewis clamp to induce spinal cord ischemia.Blood flow was recovered 30 minutes following occlusion to establish models of spinal cord ischemia/reperfusion injury.Abdominal aorta occlusion was not performed in the sham operation group.An intraperitoneal injection of Tanshinone IIA-sulfonic sodium solution was administered to rats in the tanshinone group,preoperatively.In addition,rats in the sham operation and model groups were treated with an intraperitoneal injection of the same concentration of saline,preoperatively.Tirty minutes after ischemia,rats in the model and tanshinone groups were observed at 30min,hour1,4,8,and 12 following perfusion,with eight rats for each time point.After cutting the spinal cord and drawing the blood from inferior vena cava at each time point we detected glutamic acid content in spinal cord and glutamic acid content in serum.At hour 4,8,and 12 following perfusion,evaluated neurological fuction using Tarlov method in model and tanshinone groups. All 88 rats were included in the final analysis.Glutamic acid content in spinal and serum of model and tanshinone groups rose ischemia/reperfusion injury 30min later,reached a peak 4 hours after reperfusion,fall-off thenceforth,and put back 12 hours after reperfusion. CONCLUSIONS: Tanshinone could reduce glutamic acid content in spinal cord and protected neurological function in a rat model of spinal cord ischemia/reperfusion injury. |