目的:探讨W T 1基因与骨髓增生异常综合征(MDS)发病和病情进展的关系及临床意义。方法:应用逆转录-聚合酶链反应(RT-PCR)方法,检测53例MDS患者和10例正常人骨髓中W T 1mRNA表达,并进行半定量分析。结果:MDS患者W T 1mRNA表达阳性率和表...目的:探讨W T 1基因与骨髓增生异常综合征(MDS)发病和病情进展的关系及临床意义。方法:应用逆转录-聚合酶链反应(RT-PCR)方法,检测53例MDS患者和10例正常人骨髓中W T 1mRNA表达,并进行半定量分析。结果:MDS患者W T 1mRNA表达阳性率和表达水平均高于正常对照组。W T 1mRNA表达阳性率在MDS-RA和MDS-RA S组,明显低于MDS-RAEB和MDS-RAEB-t组,其表达水平从MDS-RA和MDS-RA S组向MDS-RAEB组和MDS-RAEB-t组逐渐升高。结论:W T 1基因表达与MDS病情发展有关。W T 1基因与疾病进展关系密切,是临床上对MDS病情的高危评估、预测病情变化和动态监测治疗效果及判断预后的重要指标。展开更多
目的:在体外研究磷酸氟达拉滨(fludarab ine)对人骨髓增生异常综合征细胞株MUTZ-1细胞的作用以及可能的作用机制。方法:采用MTT法、透射电境、DNA凝胶电泳、流式细胞仪以及RT-PCR等分析方法。结果:磷酸氟达拉滨能抑制MUTZ-1细胞的生长,2...目的:在体外研究磷酸氟达拉滨(fludarab ine)对人骨髓增生异常综合征细胞株MUTZ-1细胞的作用以及可能的作用机制。方法:采用MTT法、透射电境、DNA凝胶电泳、流式细胞仪以及RT-PCR等分析方法。结果:磷酸氟达拉滨能抑制MUTZ-1细胞的生长,24、48、72 h的IC50分别为137.65 m g/L、6.27 m g/L、0.51 m g/L,具有浓度和时间依赖性。经透射电境、DNA凝胶电泳和A nnex inⅤ/P I检测,证实1~16 m g/L磷酸氟达拉滨对MUTZ-1细胞作用24 h后,可以诱导MUTZ-1细胞凋亡,其对Bcl-2、Bax、surv iv in、X IAP、cIAP1和cIAP2基因mRNA表达均无明显下调作用,但可以导致MUTZ-1细胞线粒体膜电位的下降。结论:1 m g/L^16 m g/L磷酸氟达拉滨不但能抑制MUTZ-1细胞生长而且能诱导细胞凋亡,诱导细胞凋亡是其主要细胞毒作用之一。线粒体膜电位下降是其诱导细胞凋亡的重要环节之一。展开更多
Transient stress-induced cardiomyopathies have been increasingly recognized and while rare,they tend to affect elderly women more than other demographic groups.One type,often called tako-tsubo cardiomyopathy （TTC）,i...Transient stress-induced cardiomyopathies have been increasingly recognized and while rare,they tend to affect elderly women more than other demographic groups.One type,often called tako-tsubo cardiomyopathy （TTC）,is typically triggered by significant emotional or physical stress and is associated with chest pain,electrocardiogram （ECG） changes and abnormal cardiac enzymes.Significant left ventricular regional wall motion abnormalities usually include an akinetic ＂ballooning＂ apex with normal or hyperdynamic function of the base.A second type,often called neurogenic stunned myocardium,typically associated with subarachnoid hemorrhage,also usually presents with ECG changes and positive enzymes,but the typical wall motion abnormalities seen include normal basal and apical left ventricular contraction with akinesis of the mid-cavity in a circumferential fashion.The pathophysiology,clinical care and typical courses,are reviewed.展开更多
Minimally invasive surgery has revolutionized the treatment of gastrointestinal tumors. Submucosal tumors of the stomach can be resected using laparoscopic techniques. We report here a case of ectopic pancreas tissue ...Minimally invasive surgery has revolutionized the treatment of gastrointestinal tumors. Submucosal tumors of the stomach can be resected using laparoscopic techniques. We report here a case of ectopic pancreas tissue in the gastric wall that was removed using robotic-assisted laparoscopic resection. The patient was a 15-year-old female who presented with abdominal discomfort and tarry stools. Laboratory analysis showed iron deficiency anemia. Preoperative endoscopy revealed a submucosal lesion in the posterior wall of the gastric high body. Intraoperative upper endoscopy clearly located the lesion. A robotic-assisted laparoscopic wedge resection of the putative gastric submucosal tumor was performed. The pathology results showed an ectopic pancreas. The patient had an uneventful recovery and we believe that this is a valid treatment option for this benign condition.展开更多
AIM:To investigate the methylation status of secreted protein acidic and rich in cysteine(SPARC) in human hepatocellular carcinoma(HCC) and evaluate its clinical implication.METHODS:The methylation status of SPARC was...AIM:To investigate the methylation status of secreted protein acidic and rich in cysteine(SPARC) in human hepatocellular carcinoma(HCC) and evaluate its clinical implication.METHODS:The methylation status of SPARC was analyzed in one HCC cell line(SMMC-7721) and 60 pairs of HCC and corresponding nontumorous tissues by methylation-specific polymerase chain reaction and bisulfite sequencing.The expression of SPARC mRNA and protein were examined by reverse transcription polymerase chain reaction and immunohistochemistry,respectively.The correlations between the methylation status and the gene expression,the clinicopathological parameters,as well as the prognosis after surgery were analyzed.RESULTS:In the SMMC-7721 cell line,the loss of SPARC expression was correlated with the aberrant methylation and could be reactivated by the demethylating agent 5-aza-2'-deoxycytidine.Methylation frequency of SPARC in HCC was significantly higher than that in the corresponding nontumorous tissues(45/60 vs 7/60,P < 0.001),and it was correlated with the pathological classification(P = 0.019).The downregulation of the SPARC mRNA expression in HCC was correlated with the SPARC methylation(P = 0.040).The patients with methylated SPARC had a poorer overall survival than those without methylated SPARC(28.0 mo vs 41.0 mo,P = 0.043).CONCLUSION:Aberrant methylation is an important mechanism for SPARC inactivation in HCC and SPARC methylation may be a promising biomarker for the diagnosis and prognosis of HCC.展开更多
The Republic of Uzbekistan differs amongst other countries of the Central Asia by its peculiar medical-geographical conditions. Uzbekistan has dry, roast summer and cool winter which is uncharacteristic to subtropical...The Republic of Uzbekistan differs amongst other countries of the Central Asia by its peculiar medical-geographical conditions. Uzbekistan has dry, roast summer and cool winter which is uncharacteristic to subtropical climate. These factors have certain influence on health of the population. The meteorological conditions of each season promote the activations or decrease of various diseases in the Republic. The growth of the diseases of digestive organs, respiratory apparatus and cardiovascular diseases cause the special anxiety in the country. The analysis shows that from 1999 to 2009 nosogeographical situation is mostly worsened in Navaiy region. On the contrary, in the regions of Dzhizak, Samarkand and Khorezm common sickness rate of the population is decreased slightly.展开更多
文摘目的:探讨W T 1基因与骨髓增生异常综合征(MDS)发病和病情进展的关系及临床意义。方法:应用逆转录-聚合酶链反应(RT-PCR)方法,检测53例MDS患者和10例正常人骨髓中W T 1mRNA表达,并进行半定量分析。结果:MDS患者W T 1mRNA表达阳性率和表达水平均高于正常对照组。W T 1mRNA表达阳性率在MDS-RA和MDS-RA S组,明显低于MDS-RAEB和MDS-RAEB-t组,其表达水平从MDS-RA和MDS-RA S组向MDS-RAEB组和MDS-RAEB-t组逐渐升高。结论:W T 1基因表达与MDS病情发展有关。W T 1基因与疾病进展关系密切,是临床上对MDS病情的高危评估、预测病情变化和动态监测治疗效果及判断预后的重要指标。
文摘目的:在体外研究磷酸氟达拉滨(fludarab ine)对人骨髓增生异常综合征细胞株MUTZ-1细胞的作用以及可能的作用机制。方法:采用MTT法、透射电境、DNA凝胶电泳、流式细胞仪以及RT-PCR等分析方法。结果:磷酸氟达拉滨能抑制MUTZ-1细胞的生长,24、48、72 h的IC50分别为137.65 m g/L、6.27 m g/L、0.51 m g/L,具有浓度和时间依赖性。经透射电境、DNA凝胶电泳和A nnex inⅤ/P I检测,证实1~16 m g/L磷酸氟达拉滨对MUTZ-1细胞作用24 h后,可以诱导MUTZ-1细胞凋亡,其对Bcl-2、Bax、surv iv in、X IAP、cIAP1和cIAP2基因mRNA表达均无明显下调作用,但可以导致MUTZ-1细胞线粒体膜电位的下降。结论:1 m g/L^16 m g/L磷酸氟达拉滨不但能抑制MUTZ-1细胞生长而且能诱导细胞凋亡,诱导细胞凋亡是其主要细胞毒作用之一。线粒体膜电位下降是其诱导细胞凋亡的重要环节之一。
文摘Transient stress-induced cardiomyopathies have been increasingly recognized and while rare,they tend to affect elderly women more than other demographic groups.One type,often called tako-tsubo cardiomyopathy （TTC）,is typically triggered by significant emotional or physical stress and is associated with chest pain,electrocardiogram （ECG） changes and abnormal cardiac enzymes.Significant left ventricular regional wall motion abnormalities usually include an akinetic ＂ballooning＂ apex with normal or hyperdynamic function of the base.A second type,often called neurogenic stunned myocardium,typically associated with subarachnoid hemorrhage,also usually presents with ECG changes and positive enzymes,but the typical wall motion abnormalities seen include normal basal and apical left ventricular contraction with akinesis of the mid-cavity in a circumferential fashion.The pathophysiology,clinical care and typical courses,are reviewed.
文摘Minimally invasive surgery has revolutionized the treatment of gastrointestinal tumors. Submucosal tumors of the stomach can be resected using laparoscopic techniques. We report here a case of ectopic pancreas tissue in the gastric wall that was removed using robotic-assisted laparoscopic resection. The patient was a 15-year-old female who presented with abdominal discomfort and tarry stools. Laboratory analysis showed iron deficiency anemia. Preoperative endoscopy revealed a submucosal lesion in the posterior wall of the gastric high body. Intraoperative upper endoscopy clearly located the lesion. A robotic-assisted laparoscopic wedge resection of the putative gastric submucosal tumor was performed. The pathology results showed an ectopic pancreas. The patient had an uneventful recovery and we believe that this is a valid treatment option for this benign condition.
基金Supported by Tianjin Health Bureau for research projects,No.09KY04,No.2010KZ17 and No.11KG112
文摘AIM:To investigate the methylation status of secreted protein acidic and rich in cysteine(SPARC) in human hepatocellular carcinoma(HCC) and evaluate its clinical implication.METHODS:The methylation status of SPARC was analyzed in one HCC cell line(SMMC-7721) and 60 pairs of HCC and corresponding nontumorous tissues by methylation-specific polymerase chain reaction and bisulfite sequencing.The expression of SPARC mRNA and protein were examined by reverse transcription polymerase chain reaction and immunohistochemistry,respectively.The correlations between the methylation status and the gene expression,the clinicopathological parameters,as well as the prognosis after surgery were analyzed.RESULTS:In the SMMC-7721 cell line,the loss of SPARC expression was correlated with the aberrant methylation and could be reactivated by the demethylating agent 5-aza-2'-deoxycytidine.Methylation frequency of SPARC in HCC was significantly higher than that in the corresponding nontumorous tissues(45/60 vs 7/60,P < 0.001),and it was correlated with the pathological classification(P = 0.019).The downregulation of the SPARC mRNA expression in HCC was correlated with the SPARC methylation(P = 0.040).The patients with methylated SPARC had a poorer overall survival than those without methylated SPARC(28.0 mo vs 41.0 mo,P = 0.043).CONCLUSION:Aberrant methylation is an important mechanism for SPARC inactivation in HCC and SPARC methylation may be a promising biomarker for the diagnosis and prognosis of HCC.
文摘The Republic of Uzbekistan differs amongst other countries of the Central Asia by its peculiar medical-geographical conditions. Uzbekistan has dry, roast summer and cool winter which is uncharacteristic to subtropical climate. These factors have certain influence on health of the population. The meteorological conditions of each season promote the activations or decrease of various diseases in the Republic. The growth of the diseases of digestive organs, respiratory apparatus and cardiovascular diseases cause the special anxiety in the country. The analysis shows that from 1999 to 2009 nosogeographical situation is mostly worsened in Navaiy region. On the contrary, in the regions of Dzhizak, Samarkand and Khorezm common sickness rate of the population is decreased slightly.
