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时间:2020-06-16
《肝性脑病大鼠海马 CA1区神经元形态变化和NOS 表达的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、现代中西医结合杂志ModernJournalofIntegratedTraditionalChineseandWesternMedicine2014Sep,23(27)‘2983。肝性脑病大鼠海马CA1区神经元形态变化和NOS表达的研究王晓宇,刘冀,孙杨,庞胤(沧州医学高等专科学校,河北沧州061000)[摘要]目的观察肝性脑病大鼠脑海马CA1区神经元形态的变化及一氧化氮合酶(NOS)的表达情况,探讨海马CA1区神经元的形态学改变及一氧化氮(NO)在肝性脑病发病机制中的作用。方法雄性大鼠50只,实验开始前所有动物进行莫里斯水迷宫测试,之后将动物分为正常对照组和实
2、验模型组。9周后建立CC1肝性脑病模型,分别取2组大鼠海马组织进行尼氏染色及NADPH—d染色。结果尼氏染色显示:实验组大鼠海马神经元数目减少、染色较浅,胞浆内尼氏体减少或消失。NADPH—d染色显示:实验组可见粗大轴突着色,树突联系广泛;对照组则少有粗大轴突着色,树突间联系不如实验组广泛。实验组NOS阳性神经元染色较对照组深,为紫蓝或深蓝色(强阳性及阳性),且阳性神经元数目较多;而对照组染色浅淡,呈浅蓝或与背景同色,为弱阳性。结论肝性脑病时海马受到损伤,并且NO可能介导了神经元的损伤并参与了肝硬化和肝性脑病的发病。[关键词]肝性脑病;大鼠;一氧化氮;一氧化氮合
3、酶;海马CA1区doi:10.3969/i.issn.1008—8849.2014.27.007[中图分类号]R747.9[文献标识码]A[文章编号]1008—8849(2014)27—2983—03StudyonmorphologiealchangesofneuronsandNOSexpressioninCA1HippocampusofratsWangXiaoyu,LiuJi,SunYang,PangYin(CangzhouMedicalCollege,Cangzhou061000,Hebei,China)Abstract:ObjectiveItistOobs
4、ervethemorphologicalchangesofneuronsandtheNOSexpressioninCA1hippocampusofrats,andinvestigatethemorphologicalchangesofhippocampalneuronsandtheroleofnitricoxide(NO)inthepathogene—sisofhepaticencephal0pathy.Methods50casesofmaleWistarratsweredividedintocontrolgroupandexperimentalgroup,be
5、foretheexperimentalltheratsweretestedbyMorriswatermazetest,after9weeksCC14modelofhepaticencephalopathywasestablished,thehippocampusofeachgroupsweretakeoutforNisslstaininganddyeingofNADPH—d.ResultsNisslstainingresults:inexperimentalgroup,thenumberofneuronsinhippocampuswaslessthancontr
6、olgroupanddyedlighter,Nisslbodieswasalsoreduced.NADPH—dstainingresults:inexperimentalgroup,axonwasdyeddeeper,widespreadden—dritesconnectionswereobserved.Incontrolgroupthereisfewpositiveaxonandlessconnectionsbetweendendrites.NADPH—dstainingresults:thecolorinexperimentalgroupwasblueord
7、eepblueshowedpositiveorstrongpositive,whileincontrolgroupshowedweakpositive.ConclusionHepaticencephalopathycanleadtohippocampusinjury,NOmaymediatedtheprocess·Keywords:hepaticencephalopathy;rat;NO;NOS;hippocampusCA1肝性脑病(HE)是以肝脏疾病所致的代谢紊乱为基础的旨在通过对HE大鼠海马CA1区神经元及NOS的形态定量中枢神经系统功能失调综合征,以神经精
8、神症状为主,临床表学研究
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