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CADASIL病     
CADASIL(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)的研究是近年来证实遗传因素参与脑血管病发病的重要进展之一,其主要临床特点为家族遗传方式起病、中年发病、逐渐进展的缺血性脑卒中样病程、假性球麻痹、进行性血管性痴果、先兆症状的偏头痛发作和精神症状,脑内广泛多发的白质灶、明确的MRI白质异常信号以及病理学明确的小动脉病变是本病的基本特征,分子遗传学研究发现19号染色体Notch3基因突变与本病有关。  相似文献
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OBJECTIVE: The aim of the present study was to evaluate whether the functional Notch3 polymorphism T6746C, which is not causative for cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), might be a risk factor for migraine. BACKGROUND: It has been recently demonstrated that migraine is characterized by subclinical brain infarctions and white matter lesions. Several genetic risk factors have been associated with migraine, but no study has unraveled a possible relationship between migraine and Notch3, which is involved in vascular damage. Mutations in Notch3 gene have been demonstrated to be pathogenetic for CADASIL, a small vessel disease of the brain characterized by migraine. METHODS: A total of 156 migraine patients and 128 nonheadache healthy volunteers entered the study. Demographic and clinical characteristics were carefully recorded, and a neurological work-up was performed. Moreover, each subject underwent a blood sampling for Notch3 genotype determination. RESULTS: Notch3 genotypes as well as allele frequencies did not differ in migraine patients compared to controls, even adjusting for the presence of possible confounds. No difference has been found either in migraine patients with aura or in those without aura. CONCLUSIONS: These findings support the view that functional polymorphism T6746C in Notch3 gene is not involved in increasing the risk of migraine or migraine subtypes.  相似文献
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Mutations in the NOTCH3 gene cause cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Exons 3 and 4 are mutation hotspots. Migraine is a clinical hallmark of CADASIL. The objective of this study was to investigate whether genetic variants in exons 3 and 4 of the NOTCH3 gene are associated with migraine. Exons 3 and 4 of the NOTCH3 were analysed for mutations and polymorphisms by direct DNA sequencing in 97 migraineurs and the same number of control individuals. No mutations in exons 3 and 4 of the NOTCH3 gene were found in 97 patients with migraine. However, association analysis revealed significant association of the single nucleotide polymorphism (SNP) rs1043994 with migraine.  相似文献
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目的:探讨变性高压液相色谱分析(DHPLC)在伴皮质下梗死及白质脑病的常染色体显性遗传性脑动脉病(CADASIL)患者诊断中的方法和价值。方法:运用DHPLC及DNA直接测序技术,对CADASIL家系先证者、家系成员14例(CADASIL组)及健康对照者100例(对照组)进行Notch3基因检测。结果:CADASIL组发现3种致病性突变,其中Cys134Tyr为新的突变类型,同时发现15种多态类型;对照组中未发现突变。结论:DHPLC技术在筛查Notch3中起重要作用,但在筛查时应进行多个柱温的测试,温度调换以2℃为宜。  相似文献
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