Diplotypes of the human serotonin 1B receptor promoter predict growth hormone responses to sumatriptan in abstinent alcohol-dependent men.

BACKGROUND: Some studies have associated alcohol dependence (AD) with the human serotonin (5-HT)(1B) receptor (HTR1B). This investigation explored the functional responsivity of HTR1B in abstinent AD men using a sumatriptan challenge, while measuring genetic heterogeneity in the HTR1B promoter. METHODS: Abstinent AD men (n = 27) and abstinent men without any alcohol use disorder (n = 19) were administered 6 mg of sumatriptan succinate, subcutaneously. Plasma samples collected over the following 2 hours were assayed for growth hormone (GH) concentrations. His DNA was genotyped for the A-161T and T-261G polymorphisms of the HTR1B promoter and diplotypes determined. RESULTS: Integrated GH responses were predicted by interactions of AD and promoter diplotypes, as well as subject ethnicity. The final model accounted for nearly 35% of the variance in GH responses. Post hoc evaluation revealed that AD was associated with a blunting of GH secretion only among individuals with the most common HTR1B diplotype (TT/TT). CONCLUSIONS: A blunting of GH responses in abstinent AD men was observed only among those with the most common HTR1B promoter diplotype. Less common promoter diplotypes appeared protective. Controlling for genetic background is a useful augmentation of case-control pharmacological challenge strategies designed to elucidate the psychobiology of AD and other complex disorders.     

Emergency endovascular repair of iliac artery rupture caused by post-stenting angioplasty with an endograft

I liac artery rupture is a rare complication of post-stenting angioplasty and can lead to massive life-threatening haemorrhage. Conventional surgery can not repair the damaged vessel easily and may cause substantial blood loss and high operative morbidity and mortality. We report our experience with a self-expanding covered endoprosthesis for endovascular repair of the rupture of an iliac artery caused by stenting angioplasty.     

复律后左心房功能恢复与心房颤动持续时间相关性的临床研究

目的:应用心肌组织多普勒技术结合M型超声、脉冲血流多普勒和心尖搏动图评价心房颤动(房颤)复律后心房功能的变化及其相关因素。方法:正常对照组20例,房颤复律患者34例。根据房颤持续时间分成短期房颤组(n=18)和长期房颤组(n=16),于复律后1小时、1天、1周和1个月行超声检查。采用心肌组织多普勒技术测量二尖瓣环侧壁心房收缩期心肌组织运动峰速(Am)和舒张早期运动峰速(Em)并计算Am/Em比值,M型超声测量瓣环侧壁舒张晚期心肌最大运动幅度(DAD)和舒张早期最大运动幅度(DED)并计算DAD/DED比值,脉冲血流多普勒测量心房收缩期跨瓣血流最大流速(A)和心室舒张早期血流最大流速(E)并计算A/E比值,心尖搏动图记录心房收缩压力波。并筛选出与复律后1小时、1天、1周左心房心肌组织运动速度有关的临床变量。结果:复律后1小时、1天、1周与Am相关的临床变量均为房颤持续时间。左心房功能与房颤持续时间的关系:复律后1小时及1天,Am、Am/Em,A/E,DAD、DAD/DED在两房颤组均低于正常对照组(P<0.05);长期房颤组低于短期房颤组(P<0.05);复律后1周,长期房颤组仍低于正常对照组和短期房颤组(P<0.05);短期房颤组与正常对照组无差异(P>0.05)。复律后1个月,除长期房颤组DAD/DED仍低于正常对照组(P<0.05),其余指标3组间无差异(P>0.05)。复律后左心房顿抑仅发生于长期房颤组,其发生率于1小时为43.8%,1天为25%,1周为12.5%。结论:房颤复律后左心房功能的恢复及左心房顿抑的发生与房颤持续时间有明显相关性。     

Reconstruction of the cervical part of the esophagus using a free revascularized segment of the jejunum and microsurgical technic

The article analyses the experience in 11 reconstructions of the pharynx and cervical esophagus with a free vascularized jejunal segment employing microsurgical technique for squamous cell carcinoma of the upper digestive tract. The operative technique is described. It is noted that this operative procedure is a difficult method of surgical management of defects in the pharynx and cervical esophagus and is attended in some cases with complications. From personal experience and review of the literature, the authors conclude that autotransplantation of a free vascularized jejunal segment with the use of microsurgical technique is the best method for reconstruction of defects in the pharynx and cervical esophagus.     

Data Bank and Consulting System for Medical Management of Patiens with Acute Radiation Sickness

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Partial splenic embolization for hypersplenism concomitant with or after arterial embolization of hepatocellular carcinoma in 30 patients

Purpose To study the value of partial splenic embolization (PSE) for the treatment of hypersplenism in patients undergoing embolization of hepatocellular carcinoma (HCC). Methods Transcatheter hepatic arterial embolization (THAE) combined with PSE was performed in 30 patients with HCC complicating liver cirrhosis, portal hypertension, and hypersplenism. Gelfoam sponge was used as the embolic material for PSE and limited to 100–150 pieces. Results More than 50% of splenic parenchyma was infarcted in 27 patients. Leukopenia and thrombocytopenia were corrected by PSE in 25 of 27 patients with hypersplenism. In 26 patients with esophageal varices, including 5 patients with bleeding, no rebleeding occurred during a 6–17 month follow-up. Hypersplenism was not corrected in 2 of 3 patients whose infarcted splenic parenchyma was less than 50%. No splenic abscesses or other severe complications were observed. Of the 30 patients treated, 19 are still alive after 1 year. Conclusions THAE combined with PSE is a safe and effective measure for patients with HCC.     

ATP片剂的UV—HPLC测定

采用ＵＶ－ＨＰＬＣ法测定ＡＴＰ片剂的含量，较地方标准收载的方法方便易行，重现性好。测定的回收率为１００．８±１．５％。     

冠心病患者心电图ST段水平与IL-6和脂蛋白(a)水平的关系

目的 研究冠心病患者心肌缺血情况下循环中白细胞介素-6(IL-6)和脂蛋白(a)[LP(a)]水平的关系和临床意义。方法 用ELISA分析试剂盒检测62例冠心病患者和50例健康对照者血浆IL-6，用免疫透射比浊法检测血滑LP(a)，并对心电图(EKG)ST段的情况进行比较。结果 冠心病组血浆IL-6和血清LP(a)水平均较健康对照组显著增高(P＜0．01)。与健康对照组相比，ST段异常组和ST段正常组血浆IL-6水平均显著增高(P＜0．01)；ST段异常组血浆LP(a)水平显著增高(P＜0．01)，ST段正常组血清LP(a)水平有所增高，但无统计学意义(P＞0．05)。ST段异常组血浆IL-6和血清LP(a)水平均显著高于ST段正常组(P＜0．05，P＜0．01)。冠心病患者血浆IL-6和血滑LP(a)水平存在显著的相关性(P＜0．05)。结论 冠心病患者循环中IL-6和LP(a)水平显著升高，高水平IL-6和LP(a)可能反映血管和心肌损伤的发生，LP(a)的增加可能与IL-6刺激肝脏合成LP(a)增加有关。     

血管内皮生长因子受体启动子驱动重组腺病毒双自杀基因系统选择性杀伤大肠癌细胞

OBJECTIVE: To observe the selective killing effect of adenovirus (Ad)-mediated double suicide gene driven by kinase domain-containing receptor(KDR) promoter on human colorectal cancer LoVo cells and human umbilical vein endothelial ECV304 cells. METHODS: The plasmid pAdEasy-KDR-CDglyTK was transfected into 293 packaging cells for amplification of the infectious Ad and used to infect the KDR-producing cells (ECV304 and LoVo) and the KDR-nonproducing cells (LS174T) respectively. The three cells were treated with the prodrugs 5-flurocytosine (5-FC) and ganciclovir (GCV) at different concentrations after infection. The killing effects of the fusion gene system on the cells were evaluated. The distribution of cell cycle was detected by flow cytometry. RESULTS: The infection rates of the recombinant Ad were similar among the 3 cells, gradually increasing with the increment of multiplicity of infection (MOI) and reaching 100% with the MOI of 200. The LoVo cells and ECV304 cells infected with Ad-KDR-CDglyTK were highly sensitive to both of the prodrugs (P>0.1), whereas the infected LS174T cells failed to exhibit similar sensitivity (P<0.001). The killing effect of CD/TK fusion gene on the target cells was much stronger than that of either suicide gene (P<0.001). The cell cycle of LoVo cells was arrested at G1 phase. CONCLUSION: The CD/TK fusion gene system driven by KDR promoter can selectively kill KDR-expressing human colorectal cancer LoVo cells and endothelial cells.     

Small interfering RNA inhibits SARS-CoV nucleocapsid gene expression in cultured cells and mouse muscles

SARS-CoV isa newly identified coronavirus that causes severe acute respiratory syndrome （SARS）. Currently, there is no effective method available for prophylaxis and treatment of SARS-CoVinfections. In the present study, the influence of small interfering RNA （siRNA） on SARS-CoV nucleocapsid （N） protein expression was detected in cultured cells and mouse muscles. Four siRNA expression cassettes driven by mouse U6 promoter targeting SARS-CoV N gene were prepared, and their inhibitory effects on expression of N and enhanced green fluorescence protein （EGFP） fusion protein were observed.