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脊髓损伤后早期应用FK506抑制半胱氨酸天冬氨酸蛋白酶-3表达及细胞凋亡的实验研究 被引量:1

Early application of FK506 in inhibiting the expression of caspase-3 and apoptosis after spinal injury in rats
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摘要 目的:观察FK506对脊髓损伤大鼠后肢运动功能及半胱氨酸天冬氨酸蛋白酶-3(caspase-3)表达和细胞凋亡的影响。方法:成年雄性Wistar大鼠60只,采用Allen′s法建立脊髓损伤模型后,随机分为应用FK506治疗组(n=30)和应用生理盐水对照组(n=30),于伤后不同时间点取材,行苏木精-伊红(HE)染色观察损伤脊髓组织病理变化,免疫组织化学染色检测caspase-3的表达,原位末端标记法(TUNEL)检测神经细胞凋亡,同时以BBB评分法评价后肢运动功能恢复情况。结果:HE染色显示治疗组脊髓组织病理学改变明显轻于对照组;治疗组和对照组均存在caspase-3的表达和神经细胞凋亡,两者都于伤后24h达高峰,但治疗组较对照组明显减少(P<0.01,P<0.05);治疗组后肢运动功能评分显著优于对照组(P<0.05)。结论:FK506能抑制脊髓损伤后caspase-3的表达和神经细胞凋亡,从而减轻继发性损害,促进脊髓功能恢复。
出处 《实用医学杂志》 CAS 2007年第17期2638-2641,共4页 The Journal of Practical Medicine
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