1. 潍坊医学院,山东,潍坊,261053
2. 山东省千佛山医院保健神经内科,山东,济南,250014
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潘永丽, 刘金之, 张涛. 天麻素对癫痫大鼠pAKT和caspase 3的影响[J]. 上海中医药杂志, 2019,53(4):65-70.
PAN Yongli, LIU Jinzhi, ZHANG Tao. Effect of gastrodine on p-AKT and caspase 3 in epileptic rats[J]. Shanghai Journal of Traditional Chinese Medicine, 2019,53(4):65-70.
潘永丽, 刘金之, 张涛. 天麻素对癫痫大鼠pAKT和caspase 3的影响[J]. 上海中医药杂志, 2019,53(4):65-70. DOI: 10.16305/j.1007-1334.2019.04.018.
PAN Yongli, LIU Jinzhi, ZHANG Tao. Effect of gastrodine on p-AKT and caspase 3 in epileptic rats[J]. Shanghai Journal of Traditional Chinese Medicine, 2019,53(4):65-70. DOI: 10.16305/j.1007-1334.2019.04.018.
目的:观察天麻素对戊四氮诱导癫痫模型大鼠p-AKT和caspase 3的影响。 方法:将69只Wistar大鼠分为空白对照组18只、癫痫模型组28只(PTZ组,pentylenetetrazole,55~75 mg/kg)、天麻素干预组23只(Gas组,Gastrodin,200 mg/kg),除空白对照组外均腹腔注射戊四氮(PTZ)诱导形成癫痫模型,天麻素干预组给予天麻素(Gas)干预。电镜下观察各组大鼠海马组织形态学变化,免疫组化及Western blot检测各组大鼠海马组织丝氨酸/苏氨酸蛋白激酶(p-AKT)、含半胱氨酸的天冬氨酸蛋白水解酶(caspase 3)蛋白的表达。 结果:与对照组比较,PTZ组海马区表现为明显的癫痫病理改变,神经元变性及坏死显著,主要为大锥体细胞和部分齿状回颗粒细胞,损伤细胞细胞核固缩,核碎裂样改变,胞浆肿胀,尼氏体消失,细胞周隙增大,体积增大。药物干预后病理改变改善。大鼠癫痫发作后,癫痫模型组p-AKT、caspase 3蛋白表达高于空白对照组(P<0.05)。与癫痫模型组比较,天麻素干预组caspase 3的表达下调(P<0.05),在第3天差异尤为显著(P<0.01)。 结论:天麻素通过减少p-AKT、caspase 3蛋白表达,起到抗凋亡的作用,对癫痫模型起到一定保护作用。
Objective:To observe the effect of gastrodine on p-AKT and caspase 3 in rats with epilepsy induced by pentylenetetrazole (PTZ). Methods69 Wistar rats were assigned into blank control group (18 rats), epilepsy model group (PTZ group, pentylenetetrazole, 55~75 mg/kg) (28 rats) and gastrodine group (Gas group, gastrodine, 200 mg/kg) (23 rats). Epileptic model was established with rats in all of groups by PTZ intraperitoneal injection except the blank control group. Gastrodine was given to the Gas group. Histomorphological changes of hippocampus were observed under electron microscope. The expression of serine-threonine protein kinase (p-AKT) and cysteine-aspartic acid specific protease 3 (caspase 3) in hippocampus was detected by immunohistochemistry and Western blotting. Results:Compared with the control group, the hippocampal area of the PTZ group showed remarkable pathological changes of epilepsy, including significant neuronal degeneration and necrosis, mainly the large pyramidal cells and some dentate gyrus granulosa cells, nucleus condensation in damaged cells, fragmentation-like nuclear changes, cytosolic swelling, disappearance of the nissl bodies and increase in cell peripheral gap and cell volume. The pathological changes were improved after drug intervention. After seizure in rats, the expression of p-AKT and caspase-3 was higher in the epilepsy model group than in the blank control group (P<0.05). Compared with the epilepsy model group, the expression of caspase-3 decreased in the gastrodine group (P<0.05), with very significant difference at day 3 between the two groups (P<0.01). Conclusion:Gastrodine plays an anti-apoptotic role and protects against epilepsy by reducing the expression of p-AKT and caspase 3.
天麻素癫痫p-AKTcaspase 3大鼠
gastrodineepilepsyp-AKTcaspase 3rats
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