白藜芦醇对脊髓损伤后继发性脊髓水肿,乳酸脱氢酶及ATP酶活性的影响

Effects of resveratrol on secondary spinal cord edema and activity of lactic dehydrogenase and ATPase in experimental spinal cord injury of rats

目的 探讨脊髓损伤 (SCI)后使用白藜芦醇 (resvera trol,Res)对继发性脊髓水肿及受损脊髓组织中乳酸脱氢酶(LDH)与Na+ ,K+ ATP酶活性的影响。方法 采用重物下落撞击法制备成年大鼠的脊髓损伤模型 ,于损伤后即刻腹腔注射给予Res 5 0mg·kg-1,10 0mg·kg-1或甲基强的松龙(MPSS) 10 0mg·kg-1,观察给药后 1、2 4、4 8h时Res组受损脊髓组织含水量、LDH及Na+ ,K+ ATP酶活性的变化 ,并与MPSS组进行疗效对比。结果 Res能够明显抑制SCI后继发性水肿 ,以 4 8h为最明显 ,抑制率为 11 5 % ;明显降低LDH活性 ,以 2 4h最大 ,抑制率大于 4 0 % ;明显改善Na+ ,K+ ATP酶活性 ,以 4 8h最显著 ,最大改善率在 6 0 %以上 ,上述作用均与强的松龙相当或更优。结论 Res可以有效抑制脊髓损伤后的水肿及改善能量代谢系统 。

AIM To study the effects of resveratrol on secondary spinal cord edema and the activity of lactic dehydrogenase and Na +, K + ATPase in experimental spinal cord injury (SCI)rat. METHODS The weight dropping method was used to produce the experimental spinal cord injury in adult rats. Resveratrol (Res) and methylprednisolone (MPSS) were intraperitoneally by the bolus injections of 50 mg·kg -1 , 100 mg·kg -1 and 100 mg·kg -1 , respectively, immediately after the induction of SCI. And then the effects of Res were observed at 1 h, 24 h, 48 h after SCI compared with MPSS. RESULTS Res could obvious inhibit the secondary spinal cord edema with the most remarkable suppressing rate by 11 5% at 48 h. Res was able to significantly suppress the activities of the lactic dehydrogenase with the highest suppressing rate for over 40% at 24 h. In the meantime, Res markedly improved the Na +, K + ATPase activities that promoted to the biggest extent to 60% at 48 h. The effects of Res were the same as or even stronger than those of MPSS. CONCLUSION Res may effectively protect the spinal cord from secondary spinal cord edema and improve the energy metabolism system in SCI. It suggested that Res may be having potent therapeutic effect on SCI.