A Review The elastin has been investigated since the 1950 s, and it has been found that elastin relates to the vascular diseases in recent years. In this review, the elastin gene structure, distribution and its role i...A Review The elastin has been investigated since the 1950 s, and it has been found that elastin relates to the vascular diseases in recent years. In this review, the elastin gene structure, distribution and its role in the pathogenesis of vascular diseases and aging are summarized.展开更多
I read with interest the review on the pathogenesis of diverticular disease by Commane et al in World J Gastroenterol 2009;15(20):2479-2488.However,I would like to discuss several important errors that the authors mad...I read with interest the review on the pathogenesis of diverticular disease by Commane et al in World J Gastroenterol 2009;15(20):2479-2488.However,I would like to discuss several important errors that the authors made whilst citing information from previously published work on the neuromuscular dysfunction in the disease.展开更多
文摘A Review The elastin has been investigated since the 1950 s, and it has been found that elastin relates to the vascular diseases in recent years. In this review, the elastin gene structure, distribution and its role in the pathogenesis of vascular diseases and aging are summarized.
文摘目的:通过检测弹力蛋白原(tropoelastin)基因单核苷酸多态性(single nucleotide polymorphisms,SNPs)位点表达、tropoelastin mRNA和弹性蛋白与弹力纤维水平,探讨tropoelastin基因SNPs与主动脉夹层(aortic dissection,AD)的关系。方法:留取96例AD患者(AD组)和95例对照组患者的外周血和主动脉组织标本,提取外周血DNA,应用MassARRAY技术进行tropoelastin基因SNPs检测,并构建单体型;采用real-time PCR和蛋白质印迹法分别检测主动脉中膜层tropoelastin mRNA和弹性蛋白的表达;采用EVG(Elastin Van Gieson)染色观察主动脉管形态和壁弹力纤维的分布。比较tropoelastin基因各SNPs位点基因型和单体型在两组间频率的分布,以及tropoelastin m RNA、弹性蛋白和弹力纤维在两组中表达的差异。结果:两组共检测tropoelastin基因SNPs位点7个,5个位点呈多态性,其中rs2071307(G/A)、rs34945509(C/T)和rs17855988(G/C)位点频率分布在两组之间差异均有统计学意义(均P<0.05)。3个SNP位点[rs2071307(G/A)、rs34945509(C/T)和rs17855988(G/C)]的单体型频率分布,在两组之间差异均有统计学意义(均P<0.01)。Real-time PCR和蛋白质印迹法结果显示AD组主动脉中膜层tropoelastin m RNA和弹性蛋白的表达量均显著低于对照组(均P<0.05)。EVG染色可见AD组主动脉中膜层撕裂,弹力纤维破碎、断裂,且排列不规则;而对照组主动脉中膜层结构完整、层次分明,弹力纤维排列紧密、有序。结论:Tropoelastin基因rs2071307(G/A)、rs34945509(C/T)、rs17855988(G/C)位点的多态性改变可能最终会影响弹力纤维的合成,并有可能在AD的发生中起重要作用。
文摘I read with interest the review on the pathogenesis of diverticular disease by Commane et al in World J Gastroenterol 2009;15(20):2479-2488.However,I would like to discuss several important errors that the authors made whilst citing information from previously published work on the neuromuscular dysfunction in the disease.
