目的探讨分裂相关增强子1(Hairy and enhancer of split related protein 1,HESR-1)、细胞分裂周期蛋白25同源蛋白C(Cell division cycle 25C,CDC25C)在直肠癌组织中的表达及其临床意义。方法选择166例行根治性手术的直肠癌患者为研究对...目的探讨分裂相关增强子1(Hairy and enhancer of split related protein 1,HESR-1)、细胞分裂周期蛋白25同源蛋白C(Cell division cycle 25C,CDC25C)在直肠癌组织中的表达及其临床意义。方法选择166例行根治性手术的直肠癌患者为研究对象,采用免疫组织化学法检测癌组织及癌旁组织中HESR-1和CDC25C的表达,收集患者临床病理参数并进行随访,分析HESR-1和CDC25C表达对直肠癌患者临床病理参数及预后的影响。结果肠癌组织中CDC25C、HESR-1的阳性率均高于癌旁组织(46.9%vs 12.6%,41.6%vs 7.6%),差异有统计学意义(P<0.05)。在癌组织中,CDC25C mRNA与HESR-1 mRNA的表达呈正相关(r=0.862,P=0.003)。癌组织CDC25C及HESR-1表达阳性患者的肿瘤直径和淋巴结转移率均高于表达阴性者(P<0.05)。Cox多因素分析结果显示,肿瘤直径、淋巴结转移、CDC25C阳性及HESR-1阳性是影响直肠癌患者预后的独立危险因素(P<0.05)。结论HESR-1和CDC25C在直肠癌组织中表达升高,且与患者预后密切相关。展开更多
Temporal lobe epilepsy is associated with astrogliosis. Notchl signaling can induce astrogliosis in glioma. However, it remains unknown whether Notchl signaling is involved in the pathogenesis of epilepsy. This study ...Temporal lobe epilepsy is associated with astrogliosis. Notchl signaling can induce astrogliosis in glioma. However, it remains unknown whether Notchl signaling is involved in the pathogenesis of epilepsy. This study investigated the presence of Notchl, hairy and enhancer of split-l, and glial fibrillary acidic protein in the temporal neocortex and hippocampus of lithium-pilocar- pine-treated rats. The presence of Notchl and hairy and enhancer of split-1 was also explored in brain tissues of patients with intractable temporal lobe epilepsy. Quantitative electroencephalo- gram analysis and behavioral observations were used as auxiliary measures. Results revealed that the presence of Notchl, hairy and enhancer of split-l, and glial fibriUary acidic protein were en- hanced in status epilepticus and vehicle-treated spontaneous recurrent seizures rats, but remain unchanged in the following groups： control, absence of either status epilepticus or spontaneous recurrent seizures, and zileuton-treated spontaneous recurrent seizures. Compared with patient control cases, the presences of Notch1 and hairy and enhancer of split- 1 were upregulated in the temporal neocortex of patients with intractable temporal lobe epilepsy. Therefore, these results suggest that Notchl signaling may play an important role in the onset of temporal lobe epilepsy via astrogliosis. Furthermore, zileuton may be a potential therapeutic strategy for temporal lobe epilepsy by blocking Notchl signaling.展开更多
Hyperhomocysteinemia has been shown to be associated with neurodegenerative diseases; however, lesions or histological changes and mechanisms underlying homocysteine-induced injury in olfactory bulb neurons remain unc...Hyperhomocysteinemia has been shown to be associated with neurodegenerative diseases; however, lesions or histological changes and mechanisms underlying homocysteine-induced injury in olfactory bulb neurons remain unclear. In this study, hyperhomocysteinemia was induced in apolipoprotein E-deficient mice with 1.7% methionine. Pathological changes in the olfactory bulb were observed through hematoxylin-eosin and Pischingert staining. Cell apoptosis in the olfactory bulb was determined through terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling （TUNEL） staining. Transmission electron microscopy revealed an abnormal ultrastructure of neurons. Furthermore, immunoreactivity and expression of the hairy enhancer of the split 1 （Hesl） and Hess were measured using immunohistochemistry, immunofluorescence, and western blot assay. Our results revealed no significant structural abnormality in the ol- factory bulb of hyperhomocysteinemic mice. However, the number of TUNEL-positive cells increased in the olfactory bulb, lipofuscin and vacuolization were visible in mitochondria, and the expression of Hes1 and Hes5 decreased. These findings confirm that hyperhomocyste- inemia induces injury in olfactory bulb neurons by downregulating Hes1 and Hes5 expression.展开更多
目的研究发状分裂相关增强子1(hairy and enhancer of split 1,Hes1)蛋白在经典型骨肉瘤中的表达及其与临床特征和预后的关系。方法收集本院2007年4月至2016年10月初诊初治并明确诊断的经典型骨肉瘤患者标本56例,运用免疫组织化学检测H...目的研究发状分裂相关增强子1(hairy and enhancer of split 1,Hes1)蛋白在经典型骨肉瘤中的表达及其与临床特征和预后的关系。方法收集本院2007年4月至2016年10月初诊初治并明确诊断的经典型骨肉瘤患者标本56例,运用免疫组织化学检测Hes1蛋白的表达,分析其表达与临床病理特征及术后转归的关系。对患者总生存和无进展生存情况进行随访,随访至术后5年,采用Kaplan-Meier法和log-rank检验进行生存分析。结果56例患者中,Hes1高表达22例(39.3%),低表达34例(60.7%)。与Hes1低表达患者比较,Hes1高表达患者的肿瘤直径更大(P=0.018),术后复发率及转移率均更高(均P<0.05)。Hes1低表达和高表达患者5年内平均总生存期为52.7个月和38.4个月(P=0.001),5年内平均无进展生存期为48.3个月和22.6个月(P<0.01)。Cox多因素回归分析提示,Hes1表达水平是患者总生存和无进展生存的预后独立风险因素(均P<0.01)。结论经典型骨肉瘤中Hes1蛋白的高表达与术后复发、转移及生存时间缩短相关。展开更多
文摘目的探讨分裂相关增强子1(Hairy and enhancer of split related protein 1,HESR-1)、细胞分裂周期蛋白25同源蛋白C(Cell division cycle 25C,CDC25C)在直肠癌组织中的表达及其临床意义。方法选择166例行根治性手术的直肠癌患者为研究对象,采用免疫组织化学法检测癌组织及癌旁组织中HESR-1和CDC25C的表达,收集患者临床病理参数并进行随访,分析HESR-1和CDC25C表达对直肠癌患者临床病理参数及预后的影响。结果肠癌组织中CDC25C、HESR-1的阳性率均高于癌旁组织(46.9%vs 12.6%,41.6%vs 7.6%),差异有统计学意义(P<0.05)。在癌组织中,CDC25C mRNA与HESR-1 mRNA的表达呈正相关(r=0.862,P=0.003)。癌组织CDC25C及HESR-1表达阳性患者的肿瘤直径和淋巴结转移率均高于表达阴性者(P<0.05)。Cox多因素分析结果显示,肿瘤直径、淋巴结转移、CDC25C阳性及HESR-1阳性是影响直肠癌患者预后的独立危险因素(P<0.05)。结论HESR-1和CDC25C在直肠癌组织中表达升高,且与患者预后密切相关。
基金funded by the Natural Science Foundation of Hubei Province in China,No.02.02.040458
文摘Temporal lobe epilepsy is associated with astrogliosis. Notchl signaling can induce astrogliosis in glioma. However, it remains unknown whether Notchl signaling is involved in the pathogenesis of epilepsy. This study investigated the presence of Notchl, hairy and enhancer of split-l, and glial fibrillary acidic protein in the temporal neocortex and hippocampus of lithium-pilocar- pine-treated rats. The presence of Notchl and hairy and enhancer of split-1 was also explored in brain tissues of patients with intractable temporal lobe epilepsy. Quantitative electroencephalo- gram analysis and behavioral observations were used as auxiliary measures. Results revealed that the presence of Notchl, hairy and enhancer of split-l, and glial fibriUary acidic protein were en- hanced in status epilepticus and vehicle-treated spontaneous recurrent seizures rats, but remain unchanged in the following groups： control, absence of either status epilepticus or spontaneous recurrent seizures, and zileuton-treated spontaneous recurrent seizures. Compared with patient control cases, the presences of Notch1 and hairy and enhancer of split- 1 were upregulated in the temporal neocortex of patients with intractable temporal lobe epilepsy. Therefore, these results suggest that Notchl signaling may play an important role in the onset of temporal lobe epilepsy via astrogliosis. Furthermore, zileuton may be a potential therapeutic strategy for temporal lobe epilepsy by blocking Notchl signaling.
基金supported by the National Natural Science Foundation of China,No.81560084,81560208a grant from the Project of Superior Discipline Groups in Ningxia Medical University of China,No.XY201414
文摘Hyperhomocysteinemia has been shown to be associated with neurodegenerative diseases; however, lesions or histological changes and mechanisms underlying homocysteine-induced injury in olfactory bulb neurons remain unclear. In this study, hyperhomocysteinemia was induced in apolipoprotein E-deficient mice with 1.7% methionine. Pathological changes in the olfactory bulb were observed through hematoxylin-eosin and Pischingert staining. Cell apoptosis in the olfactory bulb was determined through terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling （TUNEL） staining. Transmission electron microscopy revealed an abnormal ultrastructure of neurons. Furthermore, immunoreactivity and expression of the hairy enhancer of the split 1 （Hesl） and Hess were measured using immunohistochemistry, immunofluorescence, and western blot assay. Our results revealed no significant structural abnormality in the ol- factory bulb of hyperhomocysteinemic mice. However, the number of TUNEL-positive cells increased in the olfactory bulb, lipofuscin and vacuolization were visible in mitochondria, and the expression of Hes1 and Hes5 decreased. These findings confirm that hyperhomocyste- inemia induces injury in olfactory bulb neurons by downregulating Hes1 and Hes5 expression.
文摘目的研究发状分裂相关增强子1(hairy and enhancer of split 1,Hes1)蛋白在经典型骨肉瘤中的表达及其与临床特征和预后的关系。方法收集本院2007年4月至2016年10月初诊初治并明确诊断的经典型骨肉瘤患者标本56例,运用免疫组织化学检测Hes1蛋白的表达,分析其表达与临床病理特征及术后转归的关系。对患者总生存和无进展生存情况进行随访,随访至术后5年,采用Kaplan-Meier法和log-rank检验进行生存分析。结果56例患者中,Hes1高表达22例(39.3%),低表达34例(60.7%)。与Hes1低表达患者比较,Hes1高表达患者的肿瘤直径更大(P=0.018),术后复发率及转移率均更高(均P<0.05)。Hes1低表达和高表达患者5年内平均总生存期为52.7个月和38.4个月(P=0.001),5年内平均无进展生存期为48.3个月和22.6个月(P<0.01)。Cox多因素回归分析提示,Hes1表达水平是患者总生存和无进展生存的预后独立风险因素(均P<0.01)。结论经典型骨肉瘤中Hes1蛋白的高表达与术后复发、转移及生存时间缩短相关。
