目的:观察热休克蛋白8(heat shock protein 8,HSP8)基因在幼年和成年Long-evans大鼠视皮层中的表达水平,探讨其在视觉可塑性关键期中的作用。方法:采用半定量RT-PCR方法,分析处于视觉可塑性关键期内的幼年Long-evans大鼠和处于视觉可塑...目的:观察热休克蛋白8(heat shock protein 8,HSP8)基因在幼年和成年Long-evans大鼠视皮层中的表达水平,探讨其在视觉可塑性关键期中的作用。方法:采用半定量RT-PCR方法,分析处于视觉可塑性关键期内的幼年Long-evans大鼠和处于视觉可塑性关键期后的成年Long-evans大鼠视皮层中HSP8基因的表达水平。结果:幼年大鼠和成年大鼠视皮层间HSP8mRNA表达量有显著性差异,成年大鼠视皮层中HSP8/G3PDH为0.68±0.03,幼年大鼠视皮层中HSP8/G3PDH为0.14±0.06,HSP8mRNA在成年大鼠视皮层中表达水平显著高于幼年大鼠(P<0.05)。结论:HSP8基因在视觉可塑性关键期后的成年大鼠视皮层中呈高水平表达,是视觉可塑性关键期终止相关的候选基因。展开更多
AIM： To study susceptibility genes which may play a potential role in the pathogenesis and etiology of inflammatory bowel disease （IBD）. METHODS： To identify potential susceptibility genes we performed global gene...AIM： To study susceptibility genes which may play a potential role in the pathogenesis and etiology of inflammatory bowel disease （IBD）. METHODS： To identify potential susceptibility genes we performed global gene expression profiling in patients with IBD and control specimens. For determination of an intrinsic gene expression profile in ulcerative colitis （UC） and Crohn＇s disease （CD） compared to normal subjects, mucosal biopsies of non-inflamed regions of the colon and the terminal ileum were subjected to DNA microarray analysis. Real-time RT-PCR and immunohistochemistry were used for verification of selected regulated candidate genes and a genetic analysis was performed. RESULTS： We could show that aquaporin-8 （AQP8） mRNA and protein levels were significantly increased in the colon of UC patients compared to controls. Genetic analysis of the six exons and the promoter region of AQPS, however, revealed no mutations or polymorphisms in IBD patients. CONCLUSION： Our results suggest that upregulation of AQP8 in the colon of UC patients represents a secondary phenomenon which may, due to altered water exchange of the distal intestinal mucosa, disturb the physiologic colonic mucus barrier and thus lead to chronic inflao mmation and ulceration.展开更多
文摘目的:观察热休克蛋白8(heat shock protein 8,HSP8)基因在幼年和成年Long-evans大鼠视皮层中的表达水平,探讨其在视觉可塑性关键期中的作用。方法:采用半定量RT-PCR方法,分析处于视觉可塑性关键期内的幼年Long-evans大鼠和处于视觉可塑性关键期后的成年Long-evans大鼠视皮层中HSP8基因的表达水平。结果:幼年大鼠和成年大鼠视皮层间HSP8mRNA表达量有显著性差异,成年大鼠视皮层中HSP8/G3PDH为0.68±0.03,幼年大鼠视皮层中HSP8/G3PDH为0.14±0.06,HSP8mRNA在成年大鼠视皮层中表达水平显著高于幼年大鼠(P<0.05)。结论:HSP8基因在视觉可塑性关键期后的成年大鼠视皮层中呈高水平表达,是视觉可塑性关键期终止相关的候选基因。
文摘AIM： To study susceptibility genes which may play a potential role in the pathogenesis and etiology of inflammatory bowel disease （IBD）. METHODS： To identify potential susceptibility genes we performed global gene expression profiling in patients with IBD and control specimens. For determination of an intrinsic gene expression profile in ulcerative colitis （UC） and Crohn＇s disease （CD） compared to normal subjects, mucosal biopsies of non-inflamed regions of the colon and the terminal ileum were subjected to DNA microarray analysis. Real-time RT-PCR and immunohistochemistry were used for verification of selected regulated candidate genes and a genetic analysis was performed. RESULTS： We could show that aquaporin-8 （AQP8） mRNA and protein levels were significantly increased in the colon of UC patients compared to controls. Genetic analysis of the six exons and the promoter region of AQPS, however, revealed no mutations or polymorphisms in IBD patients. CONCLUSION： Our results suggest that upregulation of AQP8 in the colon of UC patients represents a secondary phenomenon which may, due to altered water exchange of the distal intestinal mucosa, disturb the physiologic colonic mucus barrier and thus lead to chronic inflao mmation and ulceration.
