目的评价肝硬化患者接受TIPS治疗与HCC的发生风险。方法检索建库至2021年9月PubMed、Embase、Cochrane Library、Web of Science、CNKI、万方、CBM和VIP数据库,纳入TIPS治疗与非TIPS治疗肝硬化患者HCC发生的随机对照研究、病例对照研究...目的评价肝硬化患者接受TIPS治疗与HCC的发生风险。方法检索建库至2021年9月PubMed、Embase、Cochrane Library、Web of Science、CNKI、万方、CBM和VIP数据库,纳入TIPS治疗与非TIPS治疗肝硬化患者HCC发生的随机对照研究、病例对照研究、队列研究以及横断面研究,根据Cochran系统评价方法提取文献资料,NOS量表或改良Jadad量表评价文献质量,采用RevMan5.3软件进行meta分析。结果最终纳入8项研究共1780例患者,其中TIPS治疗组755例,非TIPS治疗组1025例。采用随机效应模型合并分析结果显示,TIPS治疗患者与非TIPS治疗患者HCC发生率分别为13.64%(103/755)与13.56%(139/1025)。与非TIPS治疗患者相比,TIPS治疗不会增加HCC发生风险(OR:1.65,95%CI:0.69~2.06,P=0.52)。亚组分析显示:病毒性肝硬化超过或低于50%亚组及覆膜支架为主亚组中,TIPS治疗也不会增加HCC发生风险(均P>0.05);而裸支架为主亚组中,TIPS治疗组发生HCC的风险是非TIPS治疗组的1.57倍,差异有统计学意义(95%CI:1.06~2.34,P=0.03)。结论随着覆膜支架广泛应用,TIPS不会增加肝硬化患者HCC的发生风险。展开更多
The crystallographic and magnetic structures of Er2Fe15Al2 and Er2Fe12Al5 have been refined in Gaussian peak-shape by Rietveld analysis of Neutron diffrac- tion data. The refined results indicated that Er2Fe15Al2 comp...The crystallographic and magnetic structures of Er2Fe15Al2 and Er2Fe12Al5 have been refined in Gaussian peak-shape by Rietveld analysis of Neutron diffrac- tion data. The refined results indicated that Er2Fe15Al2 compound has Th2Ni17-type hexagonal structure （space group: P63/mmc） and Er2Fe12Al5 has Th2Zn17-type rhom- bohedral structure （space group:R 3m）. The Al atoms prefer 12j and 12k sites with occupancies 0.21 and 0.13, respectively, in Er2Fe15Al2 and prefer 18f, 18h and 6c sites with occupancies 0.35, 0.36 and 0.37, respectively, in Er2Fe12Al5. The magnetic mo- ments of all Fe atoms display ferromagnetically arrangement and the moments of Er atoms couple ferrimagnetically to the moments of the Fe atoms. The moments lie in the plane perpendicular to the six-fold axis and exhibit planar magnetic anisotropy in both samples. The values of To were given and the neutron refined results coincide with that of the magnetic measurements. The relation between magnetic properties and structures was discussed.展开更多
文摘目的评价肝硬化患者接受TIPS治疗与HCC的发生风险。方法检索建库至2021年9月PubMed、Embase、Cochrane Library、Web of Science、CNKI、万方、CBM和VIP数据库,纳入TIPS治疗与非TIPS治疗肝硬化患者HCC发生的随机对照研究、病例对照研究、队列研究以及横断面研究,根据Cochran系统评价方法提取文献资料,NOS量表或改良Jadad量表评价文献质量,采用RevMan5.3软件进行meta分析。结果最终纳入8项研究共1780例患者,其中TIPS治疗组755例,非TIPS治疗组1025例。采用随机效应模型合并分析结果显示,TIPS治疗患者与非TIPS治疗患者HCC发生率分别为13.64%(103/755)与13.56%(139/1025)。与非TIPS治疗患者相比,TIPS治疗不会增加HCC发生风险(OR:1.65,95%CI:0.69~2.06,P=0.52)。亚组分析显示:病毒性肝硬化超过或低于50%亚组及覆膜支架为主亚组中,TIPS治疗也不会增加HCC发生风险(均P>0.05);而裸支架为主亚组中,TIPS治疗组发生HCC的风险是非TIPS治疗组的1.57倍,差异有统计学意义(95%CI:1.06~2.34,P=0.03)。结论随着覆膜支架广泛应用,TIPS不会增加肝硬化患者HCC的发生风险。
基金Nuclear Industry Science Foundation !(H7196B0109) National Nature Science Foun dation of China (19835050)
文摘The crystallographic and magnetic structures of Er2Fe15Al2 and Er2Fe12Al5 have been refined in Gaussian peak-shape by Rietveld analysis of Neutron diffrac- tion data. The refined results indicated that Er2Fe15Al2 compound has Th2Ni17-type hexagonal structure （space group: P63/mmc） and Er2Fe12Al5 has Th2Zn17-type rhom- bohedral structure （space group:R 3m）. The Al atoms prefer 12j and 12k sites with occupancies 0.21 and 0.13, respectively, in Er2Fe15Al2 and prefer 18f, 18h and 6c sites with occupancies 0.35, 0.36 and 0.37, respectively, in Er2Fe12Al5. The magnetic mo- ments of all Fe atoms display ferromagnetically arrangement and the moments of Er atoms couple ferrimagnetically to the moments of the Fe atoms. The moments lie in the plane perpendicular to the six-fold axis and exhibit planar magnetic anisotropy in both samples. The values of To were given and the neutron refined results coincide with that of the magnetic measurements. The relation between magnetic properties and structures was discussed.
