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| 1 | Endoscopic ultrasound-guided vs endoscopic retrograde cholangiopancreatography biliary drainage for obstructed distal malignant biliary strictures: A systematic review and meta-analysis显示文摘BACKGROUND For palliation of malignant biliary obstruction(MBO), the gold-standard method of biliary drainage is endoscopic retrograde cholangiopancreatography(ERCP)with the placement of metallic stents. Endoscopic ultrasound(EUS)-guided drainage is an alternative that is typically reserved for cases of ERCP failure.Recently, however, there have been robust randomized clinical trials(RCTs)comparing EUS-guided drainage and ERCP as primary approaches to MBO.AIM To compare EUS guidance and ERCP in terms of their effectiveness and safety in palliative biliary drainage for MBO.METHODS This was a systematic review and meta-analysis, in which we searched the MEDLINE, Excerpta Medica, and Cochrane Central Register of Controlled Trials databases. Only RCTs comparing EUS and ERCP for primary drainage of MBO were eligible. All of the studies selected provided data regarding the rates of technical and clinical success, as well as the duration of the procedure, adverse events, and stent patency. We assessed the risk of biases using the Jadad score and the quality of evidence using the Grading of Recommendations Assessment,Development and Evaluation criteria.RESULTS The database searches yielded 5920 records, from which we selected 3 RCTs involving a total of 222 patients(112 submitted to EUS and 110 submitted to ERCP). In the EUS and ERCP groups, the rate of technical success was 91.96%n and 91.81%, respectively, with a risk difference(RD) of 0.00%(95%CI:-0.07, 0.07;P = 0.97; I^2 = 0%). The clinical success was 84.81% and 85.53% in the EUS and ERCP groups, respectively, with an RD of-0.01%(95%CI:-0.12, 0.10; P = 0.90; I^2 =0%). The mean difference(MD) for the duration of the procedure was-0.12%(95%CI:-8.20, 7.97; P = 0.98; I^2 = 84%). In the EUS and ERCP groups, there were14 and 25 adverse events, respectively, with an RD of-0.06%(95%CI:-0.23, 0.12; P= 0.54; I^2 = 77%). The MD for stent patency was 9.32%(95%CI:-4.53, 23.18; P =0.19; I^2 = 44%). The stent dysfunction rate was significantly lower in the EUS t group(MD =-0.22%; 95 CI:-0.35,-0.08; P = 0.001; I^2 = 0%).CONCLUSION EUS represents an interesting alternative to ERCP for MBO drainage,demonstrating lower stent dysfunction rates compared with ERCP. Technical and clinical success, duration, adverse events and patency rates were similar. | Fernanda P Logiudice Wanderlei M Bernardo Facundo Galetti Vitor M Sagae Carolina O Matsubayashi Antonio C Madruga Neto Vitor O Brunaldi Diogo T H de Moura Tomazo Franzini Spencer Cheng Sergio E Matuguma Eduardo G H de Moura | 2019 | World Journal of Gastrointestinal Endoscopy2019，11，4： | 6 |
| 2 | Calcium isotope fractionation and its controlling factors over authigenic carbonates in the cold seeps of the northern South China Sea显示文摘In this study, we analyzed stable calcium isotope results of authigenic carbonates from two cold seep areas of the Dongsha area and the Baiyun Sag in the northern South China Sea. The stable isotopes of carbon and oxygen as well as the mineral composition of authigenic carbonates were used to investigate control calcium isotope fractionation. The δ44/40Ca ratios of the southwestern Dongsha area samples ranged from 1.21‰ to 1.52‰ and the ratio of the Baiyun Sag sample was 1.55‰ of the SRM915a isotope standard. X-ray diffraction analysis showed that the carbonate samples consisted of dolomite, calcite and aragonite, with small amounts of high-Mg calcite and siderite. The δ13C values of the carbonates of the southwestern Dongsha area varied between δ49.21‰ and δ16.86‰ of the Vienna PeeDee Belemnite (VPDB) standard and the δ18O values ranged from 2.25‰ to 3.72‰ VPDB. The δ13C value of the Baiyun Sag sample was 2.36‰ VPDB and the δ18O value was 0.44‰ VPDB. The δ13C values of the carbonates of the southwestern Dongsha area revealed there is methane seeping into this area, with a variable contribution of methane-derived carbon. The sampled carbonates covered a range of δ13C values suggesting a dominant methane carbon source for the light samples and mixtures of δ13C values for the heavier samples, with possibly an organic or seawater carbon source. The δ18O values indicated that there is enrichment in 18O, which is related to the larger oxygen isotope fractionation in dolomite compared to calcite. The results of the Baiyun Sag sample exhibited normal seawater carbon and oxygen isotopic values, indicating that this sample is not related to methane seepage but instead to precipitation from seawater. The relatively high δ44/40Ca values indicated either precipitation at comparatively high rates in pore-water regimes with high alkalinity, or precipitation from an evolved heavy fluid with high degrees of Ca consumption (Raleigh type fractionation). The dolomite samples from the Dongsha area revealed a clear correlation between the carbon and calcium isotope composition, indicating a link between the amount and/or rate of carbonate precipitation and methane contribution to the bicarbonate source. The results of the three stable isotope systems, mineralogy and petrography, show that mineral composition, the geochemical environment of authigenic carbonates and carbon source can control the calcium isotope fractionation. | WANG ShuHong YAN Wen MAGALHAES H Vitor CHEN Zhong PINHEIRO M Luis GUSSONE Nikolaus | 2012 | Chinese Science Bulletin2012，57，11： | 4 |
| 3 | Poly(2-ethyl-2-ox- azoline)-PLA-PEI amphiphilie triblock mieells for co-deliv- ery of minicircle DNA and chemotherapeutics显示文摘 | Vitor M Cristine G Duarte D | 2014 | J Con- trolled Release2014，189，： | 1 |
| 4 | Improved radial heat sink for led lamp cooling 显示文摘 | VITOR A F C ANTONIO M G L | 2014 | Applied Thermal Engineering2014，70，： | 1 |
| 5 | Two related phenolic antioxidants with opposite effects on vitamin E content in low density lipoproteins oxidized by ferrylmyoglobin: consumption vs regeneration显示文摘 | Joao L Otilia V Vitor M | 1995 | Arch Biochem Biophys1995，323，： | 1 |
| 6 | Quantitative StructureActivity Relationship in Aziridinyl-1,4-naphthoquinone Antimalarials:Study of Theoretical Correlations by the PM3 Method显示文摘 | ELIZABETH V M JOSE W VITOR F F | 2004 | Bioorganic and Medicinal Chemistry2004，12，： | 1 |
| 7 | The first stages of preharvest 'peel pitting' development in 'encore' mandarin: An histological and ultrastructural study显示文摘 | MEDEIRA M C MAIA M L VITOR R F | 1999 | Ann Bot1999，83，6： | 1 |
| 8 | Comparative study of SPR and ELISA methods based on analysis of CD166/ALCAM levels in cancer and control human sera 显示文摘 | Hana V Vitor M Allen D | 2009 | Biosensors and Bioelectronics2009，24，： | 1 |
| 9 | Single Molecule Electron Transfer Dynamics in Complex Environments显示文摘 | Vitor B P Luciana C P Newton M Wang J | | 0，，： | 1 |
| 10 | The effect of TiO2 and P2O5 on densification behavior and properties of Anortite-Diopside glass-ceramic substrates显示文摘 | Vitor M F Marques Dilshat U Tulyaganov Govind P Ko- thiyal | 2010 | J Electroeeram2010，25，1： | 1 |
| 11 | Equilibrium and kinetic modeling of Cd(Ⅱ) biosorption by algae gelidium and agar extraction algal waste显示文摘 | Vilar Vitor J P Botelho Cidalia M S Boaventura Rui A R | 2006 | Water Research2006，40，2： | 1 |
| 12 | A new algorithm for cluster analysis of genomic methylation:the Helicobacter pylori case显示文摘 | VALE F F ENCARNACAO P VITOR J M B | | 0，，03： | 1 |
| 13 | Mercuric chloride toxicity in rat liver mitochondria and isolated hepatocytes显示文摘 | Carlos M P Vitor M C M | 1997 | Environmental Toxicology and Pharmacology1997，，3： | 1 |
| 14 | Genetic vari- ability of Brazilian Toxoplasrna gondii strains detected by random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR) and simple sequence repeat anchored-PCR (SSR-PCR) 显示文摘 | Ferreira Ade M Vitor R W Cameiro A C | 2004 | Infect Genet Evol2004，4，2： | 1 |
| 15 | An EQCM-D study of the influence of chloride on the lead anodic oxi- dation显示文摘 | Maiara O S Vitor L M Roberto M T | 2012 | Electrochimica Acta2012，78，1： | 1 |
| 16 | Yarn-mass measurement with 1-mm-length samples 显示文摘 | JOSE G P VITOR C JOAO L M | 2007 | IEEE Transactions on Industrial Electronics2007，54，2： | 1 |
| 17 | Peel pitting of Encore mandarin fruits: etiology, control and implications in fruit quality显示文摘 | Vitor R F Lindon F C Barreirob M G | 2001 | Fruits2001，56，11： | 1 |
| 18 | CPG modulation fornavigation and omnidirectional quadruped locomotion显示文摘 | CRISTINA P S VITOR M | 2012 | Robotics and Autonomous Systems2012，60，6： | 1 |
| 19 | Water recovery from bleached pulp effluent显示文摘 | Maria N Pinho D M Vitor Geraldes | 1996 | Tappi Journal1996，7，2： | 1 |
| 20 | Solar photo-Fenton as a pre-oxidation step for biological treatment of landfill leachate in a pilot plant with CPCs显示文摘 | VITOR J P SIRGIO M S T3tNIA F C V | 2011 | Catalysis Today2011，，161： | 1 |
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