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| 1 | 商陆(Phytolacca acinosa Roxb.)的锰耐性和超积累显示文摘超积累植物的确证对成功实施重金属污染环境植物修复是必不可少的。通过野外调查和营养液培养试验 ,研究超积累植物商陆 (PhytolaccaacinosaRoxb )的锰富集特性 ,结果表明 ,商陆对生长介质中的Mn具有很强的耐性和累积能力。商陆在锰含量高达 114× 10 3 mgkg-1的尾矿废弃地上依然生长良好 ,叶锰含量最高达 19 3× 10 3 mgkg-1。温室培养条件下 ,当生长介质中Mn浓度为 8 0 0 0mmolL-1时 ,虽然其生物量与对照相比有所降低 ,但植株仍能生长。随着生长介质中Mn浓度的升高 ,商陆叶和茎的Mn含量逐渐增加 ,生物富集系数则逐渐降低 ,但是地上部分锰积累量则先增加后减少。当Mn浓度为 5 0 0 0mmolL-1时 ,商陆地上部分锰积累量达到最大值 2 5 8 2mgplant-1;当Mn浓度为 12 0 0 0mmolL-1时 ,商陆仍能完成整个生命周期 ,叶锰含量达到最大值 36 4× 10 3 mgkg-1,生物富集系数为 5 5。不同锰供应水平下 ,商陆吸收的锰有87%~ 95 %被转移到地上部分。这进一步验证商陆的锰超积累特性 ,为利用超积累植物对大面积污染土壤实施植物修复提供了有力证据 。 | 薛生国 陈英旭 骆永明 Roger D Reeves 林琦 | 2004 | 土壤学报2004,41,6: | 47 |
| 2 | 基于信号质量评估和卡尔曼滤波的心率估计算法显示文摘目的:研究基于多导重症监护导联心电分析的逐搏心率估计算法。方法:通过开放源码的QRS搏动识别算法计算逐搏心率,通过分析信号的波形特征、统计特性和相互关系导出反映信号质量好坏的信号质量指数(signalqualityindex,SQI)。应用基于信号质量指数调节的卡尔曼滤波方法进行心率估计,通过残差值和信号质量指数的大小来动态调节卡尔曼滤波器的状态变量,获得逐搏心率的最佳估计。应用美国麻省理工学院多参数智能重症监护数据库II中437例病人的6000多小时高质量数据和人为添加真实心电干扰的数据进行算法评价。结果:与直接心率估计及采样保持等算法比较,本算法在严重干扰存在时,心率估计的均方根误差最小。结论:基于信号质量评估和卡尔曼滤波的心率估计算法在严重干扰存在时仍能提供精确的心率估计。 | 李桥 Roger G Mark Gari D Clifford 俞梦孙 | 2007 | 中国医学物理学杂志2007,24,6: | 8 |
| 3 | Corticosteroids and pentoxifylline for the treatment of alcoholic hepatitis:Current status显示文摘The treatment of choice for patients with severe alcoholic hepatitis (AH) is use of corticosteroids.Many randomized well designed studies have been reported from all over the world on the use of corticosteroids in the treatment of AH.However,the data on the efficacy of corticosteroids in these patients have been conflicting.Initial meta-analyses also failed to show beneficial effects of corticosteroids.Based on individual data meta-analysis showing clear benefit of corticosteroids amongst patients with severe AH (modified discriminant function of 32 or more),led American College of Gastroenterology to recommend use of corticosteroids as the first line treatment option amongst patients with severe AH.However,corticosteroids are relatively contraindicated amongst patients with severe AH and coexistent sepsis,gastrointestinal bleeding,and acute pancreatitis.These patients may be candidates for second line treatment with pentoxifylline.Further,specific treatment of AH with corticosteroids far from satisfactory with as many as 40%-50% of patients failing to respond to steroids,thus classified as nonresponsive to steroids.The management of these patients is a continuing challenge for physicians.Better treatment modalities need to be developed for this group of patients in order to improve the outcome of patients with severe AH.This article describes at length the available trials on use of corticosteroids and pentoxifylline with their current status.Route of administration,dosage,adverse effects,and mechanisms of action of these two drugs are also discussed.Finally,an algorithm with clinical approach to management of patients who present with clinical syndrome of AH is described. | Ashwani K Singal Ishmeet Walia Anjna Singal Roger D Soloway | 2011 | World Journal of Hepatology2011,3,8: | 7 |
| 4 | Randomized 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 | 2013 | World Journal of Gastroenterology2013,19,46: | 6 |
| 5 | Dyslipidemia management in primary prevention of cardiovascular disease:Current guidelines and strategies显示文摘Cardiovascular disease is the leading cause of death in the United States. In 2010, the Centers for Disease Control and Prevention estimated that $444 billion was spent on cardiovascular diseases alone, about $1 of every $6 spent on health care. As life expectancy continues to increase, this annual cost will also increase, making costeffective primary prevention of cardiovascular disease highly desirable. Because of its role in development of atherosclerosis and clinical events, dyslipidemia management is a high priority in cardiovascular prevention. Multiple major dyslipidemia guidelines have been published around the world recently, four of them by independent organizations in the United States alone. They share the goal of providing clinical guidance on optimal dyslipidemia management, but guidelines differ in their emphasis on pharmacotherapy, stratification of groups, emphasis on lifestyle modification, and use of a fixed target or percentage reduction in low density lipoprotein cholesterol. This review summarizes eight major guidelines for dyslipidemia management and considers the basis for their recommendations. Our primary aim is to enhance understanding of dyslipidemia management guidelines in patient care for primary prevention of future cardiovascular risk. | Aditya D Hendrani Tolulope Adesiyun Renato Quispe Steven R Jones Neil J Stone Roger S Blumenthal Seth S Martin | 2016 | World Journal of Cardiology2016,8,2: | 5 |
| 6 | Review of primary sclerosing cholangitis with increased IgG4 levels显示文摘Primary sclerosing cholangitis(PSC) is a chronic progressive liver disease. Subtypes of PSC have been described, most recently PSC with elevated serum and/or tissue IgG4 subclass. We aim to summarise the clinical phenotype,disease associations, differential diagnosis, response to therapy and pathogenic mechanisms underlying PSC-high IgG4 subtype. We reviewed Pub Med,MEDLINE and Embase with the search terms 'primary sclerosing cholangitis','IgG4', and 'IgG4-related sclerosing cholangitis(IgG4-SC)'. Elevated serum IgG4 are found in up-to one-quarter, and abundant IgG4-plasma cell infiltrates in the liver and bile ducts are found in up-to one-fifth of PSC patients. This group have a distinct clinical phenotype, with some studies reporting a more aggressive course of liver and associated inflammatory bowel disease, compared to PSCnormal IgG4 and the disease mimic IgG4-SC. Distinguishing PSC-high IgG4 from IgG4-SC remains challenging, requiring careful assessment of clinical features,organ involvement and tissue morphology. Calculation of serum IgG4:IgG1 ratios and use of a novel IgG4:IgG RNA ratio have been reported to have excellent specificity to distinguish IgG4-SC and PSC-high IgG4 but require validation in larger cohorts. A role for corticosteroid therapy in PSC-high IgG4 remains unanswered, with concerns of increased toxicity and lack of outcome data. The immunological drivers underlying prominent IgG4 antibodies in PSC are incompletely defined. An association with PSC-high IgG4 and HLA class-II haplotypes(B*07, DRB1*15), T-helper2 and T-regulatory cytokines(IL4, IL10,IL13) and chemokines(CCL1, CCR8) have been described. PSC-high IgG4 have a distinct clinical phenotype and need careful discrimination from IgG4-SC,although response to immunosuppressive treatments and long-term outcome remains unresolved. The presence of IgG4 likely represents chronic activation to persistent antigenic exposure in genetically predisposed individuals. | Charis D Manganis Roger W Chapman Emma L Culver | 2020 | World Journal of Gastroenterology2020,26,23: | 5 |
| 7 | Urinary nuclear magnetic resonance spectroscopy of a Bangladeshi cohort with hepatitis-B hepatocellular carcinoma: A biomarker corroboration study显示文摘AIM: To establish if a distinct urinary metabolic profile could be identified in Bangladeshi hepatitis-B hepatocellular carcinoma(HCC) patients compared to cirrhosis patients and controls. METHODS: Urine samples from 42 Bangladeshi patients with HCC(39 patients with hepatitis-B HCC), 47 with cirrhosis on a background of hepatitis B, 46 with chronic hepatitis B, and seven ethnically-matched healthy controls were analyzed using nuclear magnetic resonance(NMR) spectroscopy. A full dietary and medication history was recorded for each subject. The urinary NMR data were analyzed using principal component analysis(PCA) and orthogonal partial leastsquared discriminant analysis(OPLS-DA) techniques. Differences in relative signal levels of the most discriminatory metabolites identified by PCA and OPLSDA were compared between subject groups using an independent samples Kruskal-Wallis one-way analysis of variance(ANOVA) test with all pairwise multiple comparisons. Within the patient subgroups, the MannWhitney U test was used to compare metabolite levels depending on hepatitis B e-antigen(HBe Ag) status and treatment with anti-viral therapy. A BenjaminiHochberg adjustment was applied to acquire the level of significance for multiple testing, with a declared level of statistical significance of P < 0.05.RESULTS: There were significant differences in age(P < 0.001), weight(P < 0.001), and body mass index(P < 0.001) across the four clinical subgroups. Serum alanine aminotransferase(ALT) was significantly higher in the HCC group compared to controls(P < 0.001); serum α-fetoprotein was generally markedly elevated in HCC compared to controls; and serum creatinine levels were significantly reduced in the HCC group compared to the cirrhosis group(P = 0.004). A threefactor PCA scores plot showed clustering of the urinary NMR spectra from the four subgroups. Metabolites that contributed to the discrimination between the subgroups included acetate, creatine, creatinine, dimethyamine(DMA), formate, glycine, hippurate, and trimethylamine-N-oxide(TMAO). A comparison of relative metabolite levels confirmed that carnitine was significantly increased in HCC; and creatinine, hippurate, and TMAO were significantly reduced in HCC compared to the other subgroups. HBe Ag negative patients showed a significant increase in creatinine(P = 0.001) compared to HBe Ag positive patients in the chronic hepatitis B subgroup, whilst HBe Ag negative patients showed a significant decrease in DMA(P = 0.004) in the cirrhosis subgroup compared to HBe Ag positive patients. There were no differences in metabolite levels in HCC patients who did or did not receive antiviral treatment. CONCLUSION: Urinary NMR changes in Bangladeshi HCC were identified, corroborating previous findings from Egypt and West Africa. These findings could form the basis for the development of a cost-effective HCC dipstick screening test. | I Jane Cox Abil E Aliev Mary ME Crossey Mahvish Dawood Mamun Al-Mahtab Sheikh M Akbar Salimur Rahman Antonio Riva Roger Williams Simon D Taylor-Robinson | 2016 | World Journal of Gastroenterology2016,22,16: | 4 |
| 8 | Single vs dual(en bloc) kidney transplants from donors ≤ 5 years of age: A single center experience显示文摘AIM: To compare outcomes between single and dual en bloc(EB) kidney transplants(KT) from small pediatric donors. METHODS: Monocentric nonprospective review of KTs from pediatric donors ≤ 5 years of age. Dual EB KT was defined as keeping both donor kidneys attached tothe inferior vena cava and aorta, which were then used as venous and arterial conduits for the subsequent transplant into a single recipient. Donor age was less useful than either donor weight or kidney size in decision-making for kidney utilization as kidneys from donors < 8 kg or kidneys < 6 cm in length were not transplanted. Post-transplant management strategies were standardized in all patients.RESULTS: From 2002-2015, 59 KTs were performed including 34 dual EB and 25 single KTs. Mean age of donors(17 mo vs 38 mo, P < 0.001), mean weight(11.0 kg vs 17.4 kg, P = 0.046) and male donors(50% vs 84%, P = 0.01) were lower in the dual EB compared to the single KT group, respectively. Mean cold ischemia time(21 h), kidney donor profile index(KDPI; 73% vs 62%) and levels of serum creatinine(SCr, 0.37 mg/d L vs 0.49 mg/d L, all P = NS) were comparable in the dual EB and single KT groups, respectively. Actuarial graft and patient survival rates at 5-years follow-up were comparable. There was one case of thrombosis resulting in graft loss in each group. Delayed graft function incidence(12% dual EB vs 20% single KT, P = NS) was slightly lower in dual EB KT recipients. Initial duration of hospital stay(mean 5.4 d vs 5.6 d) and the one-year incidences of acute rejection(6% vs 16%), operative complications(3% vs 4%), and major infection were comparable in the dual EB and single KT groups, respectively(all P = NS). Mean 12 mo SCr and abbreviated MDRD levels were 1.17 mg/d L vs 1.35 mg/d L and 72.5 m L/min per 1.73 m^2 vs 60.5 m L/min per 1.73 m^2(both P = NS) in the dual EB and single KT groups, respectively. CONCLUSION: By transplanting kidneys from young pediatric donors into adult recipients, one can effectively expand the limited donor pool and achieve excellent medium-term outcomes. | Yousef Al-Shraideh Umar Farooq Hany El-Hennawy Alan C Farney Amudha Palanisamy Jeffrey Rogers Giuseppe Orlando Muhammad Khan Amber Reeves-Daniel William Doares Scott Kaczmorski Michael D Gautreaux Samy S Iskandar Gloria Hairston Elizabeth Brim Margaret Mangus Robert J Stratta | 2016 | World Journal of Transplantation2016,6,1: | 3 |
| 9 | Mortality Associated With Atrial Fibrillation in Patients With Myocardial Infarction: A Systematic Review and Meta-Analysis显示文摘 | Patricia Jabre Véronique L. Roger Mohammad H. Murad Alanna M. Chamberlain Larry Prokop Frédéric Adnet Xavier Jouven | 2011 | Circulation2011,,15: | 2 |
| 10 | DNA damage induced by chronic inflammation contributes to colon carcinogenesis in mice显示文摘 | Meira Lisiane B Bugni James M Green Stephanie L Lee Chung-Wei Pang Bo Borenshtein Diana Rickman Barry H Rogers Arlin B Moroski-Erkul Catherine A McFaline Jose L Schauer David B Dedon Peter C Fox James G Samson Leona D | 2008 | Journal of Clinical Investigation2008,,7: | 2 |
| 11 | Evidence That the Diabetes Gene Encodes the Leptin Receptor: Identification of a Mutation in the Leptin Receptor Gene in db / db Mice显示文摘 | Hong Chen Olga Charlat Louis A Tartaglia Elizabeth A Woolf Xun Weng Stephen J Ellis Nathan D Lakey Janice Culpepper Karen J More Roger E Breitbart Geoffrey M Duyk Robert I Tepper Jay P Morgenstern | 1996 | Cell1996,,3: | 2 |
| 12 | Recent and currently emerging medical treatment options for the treatment of alcoholic hepatitis显示文摘Patients with severe alcoholic hepatitis (AH) need to be treated with specific treatment for better outcome.Currently available specific treatment modalities are use of corticosteroids or pentoxifylline.However,the response rate to these drugs is only about 50%-60%.Hence,there is an urgent need for better and more effective treatment options.Tumor necrosis factor plays an important role in the pathogenesis of AH.However,agents blocking the action of tumor necrosis factor have not been found to be effective.Rather the randomized studies evaluating these agents showed an adverse effect and more infections in treated patients.Critical role of tumor necrosis factor in hepatic regen-eration explaining this contrast is discussed.Oxidative stress and inflammation derived from gut bacteria ate two main components in the pathogenesis of AH laying foundation for the role of antioxidants,probiotics,and antibiotics in the management of AH.This article reviews the current data and status of these newer agents for the treatment of AH.Of the various options available,Vitamin E and N-acetylcysteine (NAC) have shown great promise for clinical use as adjunct to corticosteroids.With these encouraging data,future well designed studies are suggested to assess Vitamin E and NAC before their routine use in clinical practice in the management of AH. | Gabriel L Reep Roger D Soloway | 2011 | World Journal of Hepatology2011,3,8: | 2 |
| 13 | Stability and structure of activated macrocyclic ligands with biological applications显示文摘 | Motekaitis R J Rogers B E Reichert D E | 1996 | Inorg Chem1996,35,: | 2 |
| 14 | Peripheral clearance of amyloid beta peptide by complement C3 -dependent adherence to erythrocytes 显示文摘 | ROGERS J LI R MASTROENI D | 2006 | Neurobiol Aging2006,27,12: | 1 |
| 15 | The Supply Chain Management Process显示文摘 | Croxton K L Garcfa - Dastugue S J Lambert D M Rogers | 2001 | The International Jour- nal of Logistics Management2001,12,2: | 1 |
| 16 | Population dynamics, habitat preference, and seasonal distribution patterns of oriental fruit fly and melon fly ( Diptera: Tephritidae) 显示文摘 | Roger I Vargas John D Stark Toshiyuki Nishida | 1990 | Econ Entomol1990,19,: | 1 |
| 17 | In vitro replication of mouse hepatitis virus strain A59显示文摘 | Compton J R Rogers D B Holmes K V | 1987 | J Virol1987,61,: | 1 |
| 18 | The multiplayer perceptron as an approximation to a Bayes optimal discriminat function显示文摘 | Ruck D W Rogers S K Kabrisky M | 1990 | IEEE Transactions on Neural Networks1990,1,4: | 1 |
| 19 | Quality management influences on logistics performance显示文摘 | Ronald D Anferson Roger E Jerman Michael R Crum | 1998 | Transpm Res-E (Logistics and Transpm Rev)1998,34,2: | 1 |
| 20 | Deciphering the biology of My cobacterium tuberculosis from the complete genome sequence 显示文摘 | Cole S T Brosch R Parkhill J Gamier T Churcher C Harris D Gordon S V Eiglmeier K Gas S Barry C E Tekaia F Badcock K Basham D Brown D Chillingworth T Cormor R Davies R Devlin K FeltweU T Gentles S Hamlin N Holroyd S Hornsby T Jagels K Kroghs A McLean J Moule S Murphy L Oliver K Osborne J Quail M A Rafandream M A Rogers J Rutter S Seeger K Skelton J Squaraes R Squares S Sulston J E Taylo K Whitehead S Barrell B G | 1998 | Nature1998,393,: | 1 |