| | | | | 伴皮质下梗死和白质脑病的常染色体显性遗传性脑动脉病血液动力学研究 | | | 金得辛;陈秀芸;黄河;张旭 | | | 目的探讨伴皮质下梗死和白质脑病的常染色体显性遗传性脑动脉病(CADASIL)患者脑血液动力学变化特点。方法该组病例来自CADASIL同一家系。病例组6例,有症状者4例,无症状者2例,均有特征性MRI异常。对照组24例。采用经颅多普勒(TCD)对所有观察对象的脑底动脉,包括双侧大脑中动脉、大脑前动脉、大脑后动脉、椎动脉(VA)和基底动脉(BA)的收缩期峰速(Vp)、平均流速(Vm)、舒张末流速(Vd)和搏动指数(PI)进行了常规检测,将结果与对照组进行了比较。并应用16层螺旋CT对所有病例进行了选择性脑灌注成像检查。结果病例组的TCD频谱形态接近正常。与对照组比较,天幕下血管(VA/BA)流速差异无统计学意义(P>0·05)。天幕上两侧前动脉和后动脉的Vp、Vm、Vd明显下降(P<0·05)。两侧中动脉的血流参数除左Vm和右PI外均有改变(P<0.05)。病例组屏气后中动脉的Vm、Vd和PI与屏气前比较有明显变化(P<0.01)。脑CT灌注成像显示双额叶局部脑血流量、脑血容量明显下降(P<0.01)。结论该组病例的脑血液动力学改变以天幕上三大动脉的血流速度下降为特征,与该病中早期以额颞叶缺血为主的病理或影像学改变相符。 【作者单位】:温州医学院附属第一医院神经科;温州市第二人民医院神经科;温州医学院附属第一医院神经科;温州医学院附属第一医院神经科 【关键词】:脑梗塞;痴呆,多发性梗塞性;血流速度 【分类号】:R743.3 【DOI】:CNKI:ISSN:0578-1426.0.2006-12-011 【正文快照】: 伴皮质下梗死和白质脑病的常染色体显性遗传性脑动脉病(CADASIL)是一种新近被认识的遗传性非动脉硬化性、非淀粉样变的脑小动脉病,为人类19p13上的Notch3基因错义突变所致[1]。该病目前并非罕见,为了揭示该病脑底动脉的血液动力学变化特征,现将经颅多普勒超声(TCD)观察的6例CADASIL患者的结果作一报道。对象与方法1.对象:该组6例病例来自经临床、影像学、病理学及分子遗传学确诊的CADASIL同一家系[2]。其诊断依据如下:(1)先证者与有症状者均于中年发病;(2)呈明显常染色体显性遗传规律;(3)以反复脑缺血发作和(或)认知障碍(痴呆)为… | | | 推荐 CAJ下载 PDF下载 | | | CAJViewer7.0阅读器支持所有CNKI文件格式,AdobeReader仅支持PDF格式 | | | | The cerebral hemodynamics in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy | | | JIN De-xin;CHEN Xiu-yun;HUANG He;ZHANG Xu. Department of Neurology;the First Affiliated Hospital of Wenzhou Medical College;Zhejiang Province 325000;China | | | Objective To investigate the cerebral hemodynamics in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).Methods The blood flow velocity of cerebral arteries was measured by using transcranial Doppler ultrasound (TCD) in 6 cases with CADASIL and a quite number of age and sex matched control subjects. All patients(4 were symptomatic and 2 asymptomatic), being an established CADASIL family with the diagnosis confirmed by clinical characteristics , neuroimagining, pathology and molecular genetics, had abnormal mark signals on MR imagining and no history of hypertension,diabetes,heart disease and migraine. A routinal TCD detection, including peak-systolic velocity (Vp), end-diastolic velocity (Vd), mean velocity (Vm) and pulsatility index(PI),was carried out on the bilateral middle cerebral arteries(MCA), anterior cerebral arteries(ACA), posterior cerebral arteries(PCA)and vertebral arteries(VA)as well as the basilar artery(BA). A comparison between the cases and controls was made. Then, the changes of flow velocity in middle cerebral arteries(MCA)of the patients with CADASIL were observed before and after breathholding tests. In addition, brain CT perfusion imaging(CTP) was carried out in all the cases by using 16-slice spiral CT. Results The appearances of frequency spectrum were nearly normal in all the cases and there was no abnormality between the two sides on velocity(P>0.05). As compared with the controls, the bilateral Vp, Vd and Vm in ACA and PCA were decreased obviously(P<0.05). The velocity parameters of MCA with the exception of left Vm and right PI showed changes (P<0.05) and there were no changes of PI in the bilateral ACA,PCA and Left MCA(P>0.05). Moreover, there were marked changes in MCA (including Vm, Vd and PI) of all the cases as compared with the controls after breathholding(P<0.01). Brain perfusion imaging showing the regional cerebral blood flow and regional cerebral blood volume in frontal lobes were obviously decreasing (P<0.01) and there was no significant variation of mean transit time (MTT).Conclusions The characteristic hemodynamic changes in our group is the decreasing flow velocity in bilateral ACA, PCA and MCA and the dominating low flow area occurring usually in frontal and temporal lobes. These changes are in conformity with the ischemic area shown in pathology and neuroimaging in CADASIL patients. 【Keyword】:Brain infarct;Dementia, multi-infarct;Blood flow velocity |
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| | | | | | 1 | 魏岗之,柏华; 伴皮层下梗死和白质脑病的常染色体显性遗传性脑动脉病——遗传性脑血管病研究的一个突破口 [J];中华神经科杂志; 2005年01期 | | 2 | 金得辛,陈秀芸,张旭; 伴皮层下梗死和白质脑病的常染色体显性遗传性脑动脉病家系研究 [J];中华内科杂志; 2004年12期 | | 3 | 袁云,王朝霞,张巍,吕鹤,牛小媛,张茁; 伴皮层下梗死和白质脑病的常染色体显性遗传性脑动脉病的外周血管改变规律 [J];中华神经科杂志; 2005年01期 | | 4 | 谢淑萍!100053北京,张津!100053北京,卢德宏!100053北京,陈彪,宋阳!100053北京,杨静芳!100053北京,董秀敏!100053北京,颜振赢!100053北京,徐庆中!100053北京; 伴有皮层下梗死和白质脑病的常染色体显性遗传性脑动脉病 附一个家系临床、病理、影像及分子遗传学研究 [J];中华神经科杂志; 2000年05期 |
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