简介:目的我们前期的实验结果显示A20mRNA和蛋白在人脑胶质瘤组织及细胞系(U251、U87、BT325)中高表达,本研究拟构建A20RNAi载体,并检测其对U251细胞A20表达的抑制作用。方法构建三种针对人A20基因的真核干涉表达载体,以脂质体法将其分别转染人脑胶质瘤细胞系U251,以RT-PCR、蛋白印迹法检测各干涉载体对U251细胞中A20mRNA和蛋白表达的抑制作用。结果成功构建三种针对A20基因的RNAi载体,经RT-PCR、蛋白印迹检测筛选出对A20基因干涉效果最佳的载体,命名为pSilencer3.1-A20R1。结论成功构建A20基因干涉载体,为进一步探讨A20与脑胶质瘤恶性增殖、血管形成以及抗凋亡的关系奠定实验基础。
简介:Mostmigrainepatientssufferfromcutaneousallodynia;however,theunderlyingmechanismsareunclear.Calcitoningene-relatedpeptide(CGRP)playsanimportantroleinthepathophysiologyofmigraine,anditistherefore,apotentialtherapeutictargetfortreatingthepain.Inthepresentstudy,aratmodelofconsciousmigraine,inducedbyrepeatedelectricalstimulationofthesuperiorsagittalsinus,wasestablishedandtreatedwithelectroacupunctureatFengchi(GB20)(depthof2–3mm,frequencyof2/15Hz,intensityof0.5–1.0mA,15minutes/day,for7consecutivedays).ElectroacupunctureatGB20significantlyalleviatedthedecreaseinhindpawandfacialwithdrawalthresholdsandsignificantlylessenedtheincreaseinthelevelsofCGRPinthetrigeminalganglion,trigeminalnucleuscaudalisandventroposteriormedialthalamicnucleusinratswithmigraine.NoCGRP-positivecellsweredetectedinthetrigeminalnucleuscaudalisorventroposteriormedialthalamicnucleusbyimmunofluorescence.Ourfindingssuggestthatelectroacupuncturetreatmentamelioratesmigrainepainandassociatedcutaneousallodyniabymodulatingthetrigeminovascularsystemascendingpathway,atleastinpartbyinhibitingCGRPexpressioninthetrigeminalganglion.
简介:目的评估Neuroform支架在颅内宽颈动脉瘤介入治疗中的作用和安全性。方法20例颅内宽颈动脉瘤采用Neuroform支架结合弹簧圈治疗。术中将预装好的Neuroform支架引入载瘤动脉并释放覆盖动脉瘤颈,经支架网孔栓塞弹簧圈。结果19例支架植入成功,其中12例取得完全栓塞,3例瘤体仍显影,4例瘤颈残留。术中支架放置失败1例,异位放置1例,术中血栓形成1例。结论Neuroform支架是颅内宽颈动脉瘤的有效治疗方法。