补骨脂素对去卵巢痴呆大鼠脑组织海马区的病理形态学影响
2016-11-14潘永梅王建华方敬王蕊
潘永梅++王建华+方敬+王蕊

[摘要]目的 探讨补骨脂素对去卵巢痴呆大鼠脑组织海马区的病理形态学影响。方法 2013年2月~2016年1月制备去卵巢痴呆大鼠模型,分为假手术组、模型组和补骨脂素组,每组10只,其中补骨脂素组建立模型后连续灌胃给药29 d,模型组给予常规生理盐水代替。观察比较各组大鼠脑组织海马区的病理形态。结果 与假手术组比较,模型组大鼠潜伏期明显延长(P<0.05);与模型组比较,补骨脂素组均能明显缩短潜伏期(P<0.05);补骨脂素组大鼠穿越平台次数显著增加,与模型组比较,差异有统计学意义(P<0.05)。假手术组、模型组、补骨脂素组SOD含量分别为(145.30±18.42)、(110.49±6.46)、(120.98±7.13)U/gprot,MDA含量分别为(2.87±0.44)、(4.46±0.63)、(3.19±0.42)nmol/mgprot。与假手术组比较,模型组SOD含量显著降低,MDA含量显著增加,三组比较差异有统计学意义(P<0.05)。超微透射电镜显示补骨脂素组锥体细胞形态得到改善,排列均一、整齐,结构清晰。结论 补骨脂素能提高去卵巢痴呆大鼠的SOD氧化酶活性,降低MDA含量,从而有利于脑组织海马区的病理形态学的改善,提高记忆能力。
[关键词]补骨脂素;去卵巢痴呆;脑组织海马区;病理形态学
[中图分类号] R749.99 [文献标识码] A [文章编号] 1674-4721(2016)09(b)-0009-03
[Abstract]Objective To investigate the effects of psoralen on ovariectomized rat dementia in hippocampus of rat brain tissue pathological effect.Methods From February 2013 to January 2016,the preparation of ovariectomized dementia rat model were divided the sham operation group,model group and psoraleae group,with 10 rats in each group,included psoralen group model after intragastric administration 29 d,model group were given routine saline instead. The pathological changes of the hippocampus of rats in each group were observed and compared.Results Compared with the sham group,rats in the model group,the latency were significantly prolonged(P<0.05);compared with the model group,psoralen group were markedly shorted the incubation period (P<0.05);and at the same time the psoralen group rats across the platform number were increased significantly,and compared the model group were significant difference (P<0.05).The SOD contents in the sham group, model group,psoraleae group were (145.30±18.42),(110.49±6.46) and (120.98±7.13)U/gprot,the content of MDA were (2.87±0.44),(4.46±0.63) and (3.19±0.42)nmol/mgprot.Compared with the sham group,SOD content of the model group were significantly decreased,MDA content were increased significantly;and the contents of SOD and MDA in the psoralen group compared to the other groups difference were statistical significance (P<0.05).Ultrastructural TEM showed that the morphology of pyramidal cells of psoralen group improved,uniform,neatly arranged,clear structure.Conclusion Psoralen in dementia rat ovarian application can improve the SOD enzyme activity,reduce MDA content,thus benefit the brain hippocampus pathological improvement,improve memory ability.
[Key words]Psoralen;Ovariectomized dementia;Hippocampus;Pathology
去卵巢痴呆是最常见的一种进行性神经变性疾病,病因为卵巢功能丧失,具有特异性神经病理改变,表现为大脑皮质普遍萎缩、神经纤维结、双螺旋纤维增多等[1-3]。随着人口老龄化的加剧,去卵巢痴呆的患病率持续上升。中医认为去卵巢痴呆是由“脑海空虚”“肾精亏损”所引起的,中药防治去卵巢痴呆有重要的作用[4]。中草药补骨脂具有温肾助阳、纳气平喘、温脾止泻等功效,补骨脂素属香豆素类物质,是补骨脂中的主要有效成分[5-6]。本文探讨补骨脂素对去卵巢痴呆大鼠脑组织海马区的病理形态学影响,旨在为后期抗痴呆新药的设计、开发提供理论依据。
1材料与方法
1.1研究对象
研究时间为2013年2月~2016年1月,选择成年健康雌性清洁级Sprague-Dawley大鼠30只,动物合格证号:1112016,体重250~280 g,由河北医科大学实验动物中心提供。补骨脂素购自上海友思生物技术有限公司,超氧化物歧化酶(SOD)试剂盒、丙二醛(MDA)试剂盒购自南京建成生物工程研究所(批号20090702)。……