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135篇 您的检索式:作者名="Alan M L"
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1Systematic review and meta-analysis of colon cleansing preparations in patients with inflammatory bowel disease显示文摘AIM To performed a systematic review and meta-analysis to determine any possible differences in terms of effectiveness, safety and tolerability between existing colon-cleansing products in patients with inflammatory bowel disease.METHODS Systematic searches were performed( January 1980-September 2016) using MEDLINE, EMBASE, Scopus, CENTRAL and ISI Web of knowledge for randomized trials assessing preparations with or without adjuvants, given in split and non-split dosing, and in high(> 3 L) or low-volume(2 L or less) regimens. Bowel cleansing quality was the primary outcome. Secondary outcomes included patient willingness-torepeat the procedure and side effects/complications.RESULTS Out of 439 citations, 4 trials fulfilled our inclusion criteria(n = 449 patients). One trial assessed the impact of adding simethicone to polyethylene glycol(PEG) 4 L with no effect on bowel cleansing quality, but a better tolerance. Another trial compared senna to castor oil, again without any differences in term of bowel cleansing. Two trials compared the efficacy of PEG high-volume vs PEG low-volume associated to an adjuvant in split-dose regimens: PEG low-dose efficacy was not different to PEG high-dose; OR = 0.84(0.37-1.92). A higher proportion of patients were willing to repeat low-volume preparations vs high-volume; OR = 5.11(1.31-20.0). CONCLUSION In inflammatory bowel disease population, PEG lowvolume regimen seems not inferior to PEG high-volume to clean the colon, and yields improved willingness-torepeat. Further additional research is urgently required to compare contemporary products in this population.Sophie Restellini Omar Kherad Talat Bessissow Charles Ménard Myriam Martel Maryam Taheri Tanjani Peter L Lakatos Alan N Barkun 2017World Journal of Gastroenterology2017,23,32:16
2Evolution and advances in laparoscopic ventral and incisional hernia repair显示文摘Primary ventral hernias and ventral incisional hernias have been a challenge for surgeons throughout the ages. In the current era, incisional hernias have increased in prevalence due to the very high number of laparotomies performed in the 20 th century. Even though minimally invasive surgery and hernia repair have evolved rapidly, general surgeons have yet to develop the ideal, standardized method that adequately decreases common postoperative complications, such as wound failure, hernia recurrence and pain. The evolution of laparoscopy and ventral hernia repair will be reviewed, from the rectoscopy of the 4th century to the advent of laparoscopy, from suture repair to the evolution of mesh reinforcement. The nuances of minimally invasive ventral and incisional hernia repair will be summarized, from preoperative considerations to variations in intraoperative practice. New techniques have become increasingly popular, such as primary defect closure, retrorectus mesh placement, and concomitant component separation. The advent of robotics has made some of these repairs more feasible, but only time and well-designed clinical studies will tell if this will be a durable modality for ventral and incisional hernia repair.Alan L Vorst Christodoulos Kaoutzanis Alfredo M Carbonell Michael G Franz 2015World Journal of Gastrointestinal Surgery2015,7,11:10
3Randomized trial in malignant biliary obstruction:Plastic vs partially covered metal stents显示文摘AIM:To compare efficacy and complications of par-tially covered self-expandable metal stent(pcSEMS)to plastic stent(PS)in patients treated for malignant,infrahilar biliary obstruction.METHODS:Multicenter prospective randomized clinical trial with treatment allocation to a pcWallstent(SEMS)or a 10 French PS.Palliative patients aged≥18,for infrahilar malignant biliary obstruction and a Karnofsky performance scale index>60%from 6 participating North American university centers.Primary endpoint was time to stent failure,with secondary outcomes of death,adverse events,Karnofsky performance score and short-form-36 scale administered on a three-monthly basis for up to 2 years.Survival analyses were performed for stent failure and death,with Cox proportional hazards regression models to determine significant predictive characteristics.RESULTS:Eighty-five patients were accrued over 37mo,42 were randomized to the SEMS group and 83patients were available for analyses.Time to stent failure was 385.3±52.5 d in the SEMS and 153.3±19.8 d in the PS group,P=0.006.Time to death did not differ between groups(192.3±23.4 d for SEMS vs211.5±28.0 d for PS,P=0.70).The only significant predictor was treatment allocation,relating to the time to stent failure(P=0.01).Amongst other measured outcomes,only cholangitis differed,being more common in the PS group(4.9%vs 24.5%,P=0.029).The small number of patients in follow-up limits longitudinal assessments of performance and quality of life.From an initially planned 120 patients,only 85 patients were recruited.CONCLUSION:Partially covered SEMS result in a longer duration till stent failure without increased complication rates,yet without accompanying measurable benefits in survival,performance,or quality of life.Peter L Moses Khalid M AlNaamani Alan N Barkun Stuart R Gordon Roger D Mitty M Stanley Branch Thomas E Kowalski Myriam Martel Viviane Adam 2013World Journal of Gastroenterology2013,19,46:6
4新加坡成人慢性呼吸系统疾病患者6分钟步行距离的最小临床重要差异值研究(英文)显示文摘目的:6 min步行距离(6MWD)是临床上常见的功能性运动能力测试,特别是对于慢性呼吸系统疾病患者。一些文献记载了关于白种人的6MWD的最小临床重要差异(MCID),但对亚洲人群的相关信息未见记载。本研究旨在建立亚洲成人慢性呼吸道疾病患者6MWD的最小临床重要差异。方法:采用'锚定'法和'分布'法对新加坡中央医院肺康复计划登记处的资料进行了分析。'锚定'法收集确诊为慢性呼吸道疾病的患者50例,其中男38例,女12例;平均年龄(64.2±12.3)岁,通过电话采访及使用整体变化评估量表(GROC)评价患者肺康复计划后的自觉改善程度,再将患者在肺康复计划中6MWD的改变数值与相对应的患者自觉改善程度进行比较,这种关系用操作特征曲线(ROC)统计表示。通过'分布'法确定6MWD的MCID,从门诊和住院的肺康复计划(PRP)参与者中检索医疗记录136例,其中男103例,女33例;平均年龄(60.1±14.1)岁。结果 :ROC曲线表明6MWD出现临床显著性变化的最佳临界值为17.4 m,其对应的敏感性为79.4%,特异性为81.3%,阳性似然比为4.23。由'分布'法确定6MWD的最小临床重要差异值为18.6 m。结论:18.6 m为新加坡华人6MWD的最小临床重要差异的估计值。Meredith T L YEUNG Alan W P WONG Katherine S L HUANG Alice Y M JONES 2015康复学报2015,25,1:3
5Increased catabolism and decreased unsaturation of ganglioside in patients with inflammatory bowel disease显示文摘AIM: To investigate whether accelerated catabolism of ganglioside and decreased ganglioside content contribute to the etiology of pro-inflammatory intestinal disease. METHODS: Intestinal mucosa from terminal ileum or colon was obtained from patients with ulcerative colitis or inflammatory Crohn's disease(n = 11) undergoing bowel resection and compared to control samples of normal intestine from patients with benign colon polyps(n = 6) and colorectal cancer(n = 12) in this observational case-control study. Gangliosides and phospholipids of intestinal mucosa were characterized by class and ceramide or fatty acid composition using liquid chromatography triple-quad mass spectrometry. Content and composition of ganglioside classes GM1, GM3, GD3, GD1 a, GT1 and GT3 were compared among subject groups. Content and composition of phospholipid classes phosphatidylcholine(PC) and phosphatidylethanolamine were compared among subject groups. Unsaturation index of individual ganglioside and phospholipid classes was computed and compared among subject groups. Ganglioside catabolism enzymes beta-hexosaminidase A(HEXA) and sialidase-3(NEU3) were measured in intestinal mucosa using western blot and compared among subject groups. RESULTS: Relative GM3 ganglioside content was 2-fold higher(P < 0.05) in intestine from patients with inflammatory bowel disease(IBD) compared to control intestine. The quantity of GM3 and ratio of GM3/GD3 was also higher in IBD intestine than control tissue(P < 0.05). Control intestine exhibited 3-fold higher(P < 0.01) relative GD1 a ganglioside content than IBD intestine. GD3 and GD1 a species of ganglioside containing three unsaturated bonds were present in control intestine, but were not detected in IBD intestine. The relative content of PC containing more than two unsaturated bonds was 30% lower in IBD intestine than control intestine(P < 0.05). The relative content of HEXA in IBD intestine was increased 1.7-fold(P < 0.05) and NEU3 was increased 8.3-fold(P < 0.01) compared to normal intestine. Intestinal mucosa in IBD is characterized by increased GM3 content, decreased GD1 a, and a reduction in polyunsaturated fatty acid constituents in GD3, GD1 a and PC.CONCLUSION: This study suggests a new paradigm by proposing that IBD occurs as a consequence of increased metabolism of specific gangliosides.John J Miklavcic Glen K Shoemaker Vera C Mazurak M Tom Clandinin Tasha DL Hart Kareena L Schnabl Gordon M Lees Bodil MK Larsen Oliver F Bathe Alan BR Thomson M Tom Clandinin 2015World Journal of Gastroenterology2015,21,35:3
6Radiation exposure from CT scans in childhood and subsequent risk of leukaemia and brain tumours: a retrospective cohort study显示文摘Mark S Pearce Jane A Salotti Mark P Little Kieran McHugh Choonsik Lee Kwang Pyo Kim Nicola L Howe Cecile M Ronckers Preetha Rajaraman Alan W Craft Louise Parker Amy Berrington de González 2012The Lancet . 2012 (9840)2012,,:3
7Diagnostic accuracy of tests for Helicobacter pylori in an Alaska Native population显示文摘AIM:To evaluate the accuracy of two non-invasivetests in a population of Alaska Native persons. Highrates of Helico bacter pylori(H. pylori) infection,H. pylori treatment failure,and gastric cancer in this population necessitate documentation of infection status atmultiple time points over a patient's life.METHODS:In 280 patients undergoing endoscopy,H. pylori was diagnosed by culture,histology,rapidurease test,13C urea breath test(UBT) ,and immuno-globulin G antibodies to H. pylori in serum. The performances of 13C-UBT and antibody test were compared to a gold standard defined by a positive H. pylori testby culture or,in case of a negative culture result,bypositive histology and a positive rapid urease test.RESULTS:The sensitivity and specificity of the 13C-UBT were 93% and 88%,respectively,relative to thegold standard. The antibody test had an equivalents ensitivity of 93% with a reduced specificity of 68%.The false positive results for the antibody test were as-sociated with previous treatment for an H. pylori infection [relative risk(RR) = 2.8]. High levels of antibodiesto H. pylori were associated with chronic gastritis and male gender,while high scores in the 13C-UBT testwere associated with older age and with the H. pyloribacteria load on histological examination(RR = 4.4) .CONCLUSION:The 13C-UBT out performed the anti-body test for H. pylori and could be used when a non-invasive test is clinically necessary to document treatment out come or when monitoring for reinfection.Dana L Bruden Michael G Bruce Karen M Miernyk Julie Morris Debby Hurlburt Thomas W Hennessy Helen Peters Frank Sacco Alan J Parkinson Brian J McMahon 2011World Journal of Gastroenterology2011,17,42:3
8Phytoremediation of soil metals显示文摘Rufus L Chaney Minnie Malik Yin M Li Sally L Brown Eric P Brewer J Scott Angle Alan JM Baker 1997Current Opinion in Biotechnology1997,,3:2
9Use of buffeting and other means to improve results of problem atic pesticides in a fast and easy method for residue analysis of fruits and vegetables 显示文摘STEVEN J L KATEIINA M ALAN R L 2005JAOAC Int2005,88,2:1
10Uncertainty and shopping behavior:an experimental study显示文摘Grether David M Alan Schwartz and Louis L Wilde 1988Review of Economic Studies1988,55,:1
11Brodalumab,an Anti-Interleukin-17-recptor Antibody for Psoriasis显示文摘Kim AP Craig L Alan M 2012N Engl J Med2012,366,:1
12The vehicle routing problem with stochastic demand and duration constraints显示文摘ALAN L E JUAN C M MARTIN S 0,,4:1
13Early microbial translocation blockade reduces SIV-mediated inflammation and viral replication显示文摘Kristoff Jan Haret-Richter George Ma Dongzhu Ribeiro Ruy M Xu Cuiling Cornell Elaine Stock Jennifer L He Tianyu Mobley Adam D Ross Samantha Trichel Anita Wilson Cara Tracy Russell Landay Alan Apetrei Cristian Pandrea Ivona 2014Journal of Clinical Investigation2014,,:1
14Building solid models from from boreholes and user-defined cross-sections 显示文摘ALAN M L NORMAN L J 2003Computers & Geosciences2003,29,:1
15查看详情显示文摘Lehotay S J Kate(r)ina M Alan R L 0,,02:1
16Precipitation of Al3Sc in binary Al-Sc alloys显示文摘GABRIEL M NOVOTNY ALAN J ARDEL L 2001Mater Sci Eng A2001,318,:1
17Using genetic algorithms to opti- mize the selection of cost driver in activity-based cos- ting显示文摘Alan L Gupta M 1996Intelligent Systems in Accounting Finance and Management1996,5,:1
18An improved colorimetric assay for the measurement of transglutaminase (type Ⅱ) ε- (γ-glutamyl) 1 ysinecross-linking activity显示文摘Susan M Trigwell Paul T L Alan J Hargreaves 2004Anal Bioehem2004,330,:1
19Mutations affecting starch synthase III in arabidopsis alter leaf starch structure and increase the rate of starch synthesisl显示文摘Zhang X L Alan M M Martha G 2005Plant Physiology2005,138,:1
20Mercury(11) immobilized on car-bon nanotubes: synthesis, characterization and redox properties 显示文摘ALAN M B MIAO W COLIN L R 2000Langmuir2000,16,14:1
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