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10075篇 您的检索式:作者名="WALLACE"
    题名 作者 年代 出处 被引量
1Immunopathology of inflammatory bowel disease显示文摘Inflammatory bowel disease(IBD)results from a complex series of interactions between susceptibility genes,the environment,and the immune system.The host microbiome,as well as viruses and fungi,play important roles in the development of IBD either by causing inflammation directly or indirectly through an altered immune system.New technologies have allowed researchers to be able to quantify the various components of the microbiome,which will allow for future developments in the etiology of IBD.Various components of the mucosal immune system are implicated in the pathogenesis of IBD and include intestinal epithelial cells,innate lymphoid cells,cells of the innate(macrophages/monocytes,neutrophils,and dendritic cells)and adaptive(T-cells and B-cells)immune system,and their secreted mediators(cytokines and chemokines).Either a mucosal susceptibility or defect in sampling of gut luminal antigen,possibly through the process of autophagy,leads to activation of innate immune response that may be mediated by enhanced toll-like receptor activity.The antigen presenting cells then mediate the differentiation of na?ve T-cells into effector T helper(Th)cells,including Th1,Th2,and Th17,which alter gut homeostasis and lead to IBD.In this review,the effects of these components in the immunopathogenesis of IBD will be discussed.Kori L Wallace Li-Bo Zheng Yoshitake Kanazawa David Q Shih 2014World Journal of Gastroenterology2014,20,1:45
2Diagnostic approach to patients with acute idiopathic and recurrent pancreatitis,what should be done?显示文摘Acute recurrent pancreatitis (ARP) is a common clinical condition that may be difficult to diagnose. Endoscopic ultrasound (EUS) is proposed to be a safe first line test of choice in the majority of patients. When interventions are needed to remove biliary stones, evaluate sphincter of Oddi or pancreas divisum, endoscopic retrograde cholangiopancreatography (ERCP) is recommended. Magnetic resonance cholangiopancreatography (MRCP) can be a suitable alternative from a diagnostic standpoint although may not be widely available. Finally, genetic testing is increasingly used to detect certain mutations that are associated with this diagnosis.Mohammad Al-Haddad Michael B Wallace 2008World Journal of Gastroenterology2008,14,7:19
3The practice of mine ventilation engineering显示文摘The practice of ventilation is continually evolving with new technological advances developed in the mining industry.In recent years the advances in diesel engine technologies,ventilation modeling software,and ventilation management capacities have redefined the historical methods used to evaluate systems.The advances re-evaluate previous methods used to calculate the airflow requirements for the dilution of diesel exhaust fumes.Modeling software has become an integral part of planning and developing ventilation systems in partnership with graphical mine design software packages to generate realistic representations of the mine.Significant advances in ventilation control strategies through remote sensors and monitoring capabilities have been developed to results in cost savings.Though there has been much advancement in mine ventilation technology,the practices and basic ventilation principals enacted through the ventilation engineer cannot be placated with technological advances only.Wallace Keith Prosser Brian Stinnette J.Daniel 2015International Journal of Mining Science and Technology2015,25,2:17
4Mechanisms, prevention and clinical implications of nonsteroidal anti-inflammatory drug-enteropathy显示文摘This article reviews the latest developments in understanding the pathogenesis, detection and treatment of small intestinal damage and bleeding caused by nonsteroidal anti-inflammatory drugs (NSAIDs). With improvements in the detection of NSAID-induced damage in the small intestine, it is now clear that this injury and the associated bleeding occurs more frequently than that occurring in the stomach and duodenum, and can also be regarded as more dangerous. However, there are no proven-effective therapies for NSAID-enteropathy, and detection remains a challenge, particularly because of the poor correlation between tissue injury and symptoms. Moreover, recent studies suggest that commonly used drugs for protecting the upper gastrointestinal tract (i.e., proton pump inhibitors) can significantly worsen NSAID-induced damage in the small intestine. The pathogenesis of NSAID-enteropathy is complex, but studies in animal models are shedding light on the key factors that contribute to ulceration and bleeding, and are providing clues to the development of effective therapies and prevention strategies. Novel NSAIDs that do not cause small intestinal damage in animal models offer hope for a solution to this serious adverse effect of one of the most widely used classes of drugs.John L Wallace 2013World Journal of Gastroenterology2013,19,12:15
5The ruminal microbiome associated with methane emissions from ruminant livestock显示文摘Methane emissions from ruminant livestock contribute significantly to the large environmental footprint of agriculture.The rumen is the principal source of methane, and certain features of the microbiome are associated with low/high methane phenotypes. Despite their primary role in methanogenesis, the abundance of archaea has only a weak correlation with methane emissions from individual animals. The composition of the archaeal community appears to have a stronger effect, with animals harbouring the Methanobrevibacter gottschalki clade tending to be associated with greater methane emissions. Ciliate protozoa produce abundant H_2, the main substrate for methanogenesis in the rumen,and their removal(defaunation) results in an average 11% lower methane emissions in vivo, but the results are not consistent. Different protozoal genera seem to result in greater methane emissions, though community types(A, AB, B and O) did not differ. Within the bacteria, three different ‘ruminotypes' have been identified, two of which predispose animals to have lower methane emissions. The two low-methane ruminotypes are generally characterized by less abundant H_2-producing bacteria. A lower abundance of Proteobacteria and differences in certain Bacteroidetes and anaerobic fungi seem to be associated with high methane emissions. Rumen anaerobic fungi produce abundant H_2 and formate, and their abundance generally corresponds to the level of methane emissions. Thus, microbiome analysis is consistent with known pathways for H_2 production and methanogenesis, but not yet in a predictive manner. The production and utilisation of formate by the ruminal microbiota is poorly understood and may be a source of variability between animals.Ilma Tapio Timothy J.Snelling Francesco Strozzi R.John Wallace 2017Journal of Animal Science and Biotechnology2017,8,2:13
6硫胺素与甘草酸二铵治疗慢性乙型肝炎的临床疗效分析显示文摘观察硫胺素与甘草酸二铵治疗慢性乙型肝炎的临床疗效。在美国加州及大连分别对慢性乙型肝炎患者应用硫胺素和甘草酸二铵。甘草酸二铵组与甘草酸二铵 +硫胺素组肝功复常率两组间有显著差异 ;硫铵素组与上述两组比较肝功复常率明显降低 ,差异显著。硫铵素组连续用药 4 8周后 ,肝功复常率、血清HBVDNA、HBeAg阴转率与治疗第八周结束时各治疗组比较有显著差异。硫铵素可降低乙肝病毒含量 ,稳定肝脏内环境 。李永新 高庆伟 Diana M Luan Amy E. Wallace 王英兰 2003临床肝胆病杂志2003,19,4:12
7Photosynthetic and Respiratory Acclimation to Experimental Warming for Four SpeCies in a Tallgrass Prairie Ecosystem显示文摘全球温度被 0.6 度 C 在过去的世纪增加了并且被预言在这个世纪底由 1.4-5.8 度 C 增加。全球温暖将在高草种类上有什么影响,是不清楚的。在现在的学习,我们检验了光合的率( Pn )和叶呼吸在翠菊 ericoides 的黑暗( Rd )评估的叶网, Ambrosiapsilostachya ,向日葵女人是并且响应在大平原(俄克拉何马)的 atallgrass 大草原生态系统的试验性的温暖的 Sorghastrum 坚果 ans ,美国,在 2000-2001 的秋天。Warminghas 自从 1999 年 11 月 21 日,与红外线的加热器实现了。Pn 在春天显著地增加了,在早秋天减少了,并且没在与控制相比温暖下面在四种在夏天和晚秋变化。四种的 Rd 显著地增加了直到仲夏然后没在温暖下面变化。测量温度反应为 H.mollis 和 S 由 2.32 和 4.59 度 C 温暖增加了的 Pnshowed 弄弯 Pn (Topt ) 的最适温度。坚果 ans,分别地在 8 月,而在 5 月和 9 月没有变化,并且一。ericoides 和 A。psilostachya 也没在任何 3 个月显示出变化。然而,在显示出的最适温度(Popt ) 的 Pn 在 5 月和 Augustfor 在 9 月和没有规定击倒规定所有四种。Rd 的温度反应曲线说明 Rd 的温度敏感, Q10,与对照小区相比在温暖的阴谋是更低的除了在 8 月的 A.ericoides,而为所有四种在 5 月和 9 月没有变化。现在的学习的 Theresults 显示光合、呼吸的环境适应与种类并且在季节之中变化,发生在中间成长的季节并且不在早、迟了的生长期……Xuhui Zhou Xiaozhong Liu Linda L. Wallace Yiqi Luo 2007Journal of Integrative Plant Biology2007,49,3:11
8Three-dimensional bio-printing显示文摘Three-dimensional(3D) printing technology has been widely used in various manufacturing operations including automotive, defence and space industries. 3D printing has the advantages of personalization, flexibility and high resolution, and is therefore becoming increasingly visible in the high-tech fields. Three-dimensional bio-printing technology also holds promise for future use in medical applications. At present 3D bio-printing is mainly used for simulating and reconstructing some hard tissues or for preparing drug-delivery systems in the medical area. The fabrication of 3D structures with living cells and bioactive moieties spatially distributed throughout will be realisable. Fabrication of complex tissues and organs is still at the exploratory stage. This review summarize the development of 3D bio-printing and its potential in medical applications, as well as discussing the current challenges faced by 3D bio-printing.GU Qi HAO Jie LU YangJie WANG Liu WALLACE Gordon G. ZHOU Qi 2015Science China(Life Sciences)2015,58,5:11
9Unveiling the enigma of refractory carbon in the ocean显示文摘INTRODUCTION The ocean holds a tremendous reservoir of refractory dissolved organic carbon (RDOC)that plays an important role in carbon cycling and climate change [1].However,the origin of the RDOC has been an enigma for half a century. This perspective is to address why the enigma deserves scientific efforts and illustrate a robust scheme--the Microbial Carbon Pump (MCP)-to unveil the enigma from molecular to ecosystem levels,Through generation of intrinsic RDOC (RDOCt)under specific biotic and abiotic environmental conditions,as well as through derivation of diverse organic molecules at extremely low concentrations (RDOCc).Nianzhi Jiao Ruanhong Cai Qiang Zheng Kai Tang Jihua Liu Fanglue Jiao Douglas Wallace Feng Chen Chao Li Rudolf Amann Ronald Benner Farooq Azam 2018National Science Review2018,5,4:10
10使用分位数回归分析探究手术部位感染对日间手术总体医疗费用的影响(摘译)显示文摘背景日间手术在外科手术中所占的比例越来越大,而关于日间手术手术部位感染(SSI)对总体医疗费用影响的研究较少。方法对2004年12月31日—2010年12月31日在日间手术室进行胆囊切除、保乳、前交叉韧带重建和疝修复手术,并使用商业保险的患者进行回顾,选取术后90 d内发生SSI的患者作为研究对象,若因SSI需要二次手术或再入院被认为是严重感染。曾翠 吴安华 Olsen MA Tian F Wallace AE 2017中国感染控制杂志2017,16,8:10
11The impact of perceived social support, loneliness, and physical activity on quality of life in South Korean older adults显示文摘Purpose: The purpose of this study was to propose and test a conceptual model that explains the interrelationships among perceived social support, loneliness, physical activity(PA), and quality of life(QoL) among active older adults in South Korea.Methods: Data were collected from 332 individuals over the age of 65 using a systematic stratified convenience sampling method. Survey data were collected and analyzed using a structural equation model(SEM).Results: Perceived social support had a significantly positive effect on PA(b = 0.14, p < 0.01) and QoL(b = 0.28, p < 0.001) while decreasing loneliness(b = —0.55, p < 0.001). PA had a significant positive effect on QoL(b = 0.12, p < 0.01), and loneliness had a negative effect on QoL(b = —0.37, p < 0.001). Loneliness mediated the relationship between perceived social support and QoL.Conclusion: The SEM results of the current study support the proposed model that explained the interrelationships among perceived social support, loneliness, PA, and QoL among active older adults in South Korea. These findings suggest the importance of incorporating social support mechanisms for PA interventions in order to enhance QoL. The findings of this study can help create more effective health and physical education programs for the older generations in South Korea to enhance their QoL.Hyun-Wook Kang Meungguk Park Juliane Poock Wallace (Hernandez) 2018Journal of Sport and Health Science2018,7,2:9
12Effect of arabinoxylo-oligosaccharides and arabinoxylans on net energy and nutrient utilization in broilers显示文摘Arabinoxylo-oligosaccharides(AXOS) are hydrolytic degradation products of arabinoxylans(AX) that can be fermented by the gut microbiota, thus potentially displaying prebiotic properties. This study examined the effects of AX and AXOS on net energy(NE) and nutrient utilization in broilers. Ross 308 broilers(n = 90, 30 birds per treatment) were fed wheat-soybean diets supplemented with pure AX, AXOS produced by exposing the AX to xylanase in vitro(AXOS), or AX with xylanase(AX + E) from d 10 to 21.Performance parameters were measured from d 10 to 21. On d 15, 10 birds per treatment were allocated to closed-circuit net energy chambers to assess the impact of AX and AXOS on dietary energy utilization,through assessment of both metabolisable energy(ME) and NE. Ileal and caecal digesta samples were collected on d 21 to determine the effect of AX and AXOS on ileal and total tract dry matter digestibility,ileal digestible energy, digesta pH, short chain fatty acids(SCFA) and microbiota concentration. Feed conversion ratio was numerically the lowest in birds fed the diet supplemented with AXOS, which is 1.26 compared to 1.37 and 1.30 for AX and AX + E, respectively. Ileal dry matter digestibility was higher in birds fed AXOS than those fed AX(P = 0.047). Ileal digestible energy and total tract dry matter digestibility were higher in birds fed AXOS than those fed AX or AX + E(P = 0.004 and P = 0.001,respectively). Birds fed AXOS had higher ME intake(P = 0.049) and nitrogen retention(P = 0.001) and a strong trend of higher NE(P = 0.056), NE intake(P = 0.057) and retained energy(P = 0.054) compared to those fed AX. Ileal total SCFA, lactic and formic acid concentrations were higher in birds fed AXOS than those fed AX(P = 0.011, P = 0.012 and P = 0.023, respectively). Birds fed AXOS or AX + E had higher caecal total SCFA, acetic, butyric and isovaleric acid concentrations compared to those fed AX(P = 0.001,P = 0.004, P = 0.016 and P = 0.008, respectively), and caecal propionic acid concentration was higher in birds fed AX + E than those fed AX(P = 0.050). Ileal and caecal microbiota concentrations were numerically higher and pH was lower in birds fed AXOS and AX + E than those fed AX. Results from this study indicate that feeding AXOS directly is more efficient than AXOS generation in the gastrointestinal tract, and suggest that AXOS has a potential to be an efficacious prebiotic in broiler diets.Natalie K.Morgan Chake Keerqin Andrew Wallace Shu-Biao Wu Mingan Choct 2019Animal Nutrition2019,,1:8
13Identification and characterization of genes that control fat deposition in chickens显示文摘Background: Fat deposits in chickens contribute significantly to meat quality attributes such as juiciness, flavor,taste and other organoleptic properties. The quantity of fat deposited increases faster and earlier in the fastgrowing chickens than in slow-growing chickens. In this study, Affymetrix Genechip? Chicken Genome Arrays 32773transcripts were used to compare gene expression profiles in liver and hypothalamus tissues of fast-growing and slow-growing chicken at 8 wk of age. Real-time RT-PCR was used to validate the differential expression of genes selected from the microarray analysis. The mRNA expression of the genes was further examined in fat tissues. The association of single nucleotide polymorphisms of four lipid-related genes with fat traits was examined in a F2resource population.Results: Four hundred genes in the liver tissues and 220 genes hypothalamus tissues, respectively, were identified to be differentially expressed in fast-growing chickens and slow-growing chickens. Expression levels of genes for lipid metabolism(SULT1B1, ACSBG2, PNPLA3, LPL, AOAH) carbohydrate metabolism(MGAT4B, XYLB, GBE1, PGM1,HKDC1)cholesttrol biosynthesis(FDPS, LSS, HMGCR, NSDHL, DHCR24, IDI1, ME1) HSD17B7 and other reaction or processes(CYP1A4, CYP1A1, AKR1B1, CYP4V2, DDO) were higher in the fast-growing White Recessive Rock chickens than in the slow-growing Xinghua chickens. On the other hand, expression levels of genes associated with multicellular organism development, immune response, DNA integration, melanin biosynthetic process, muscle organ development and oxidation-reduction(FRZB, DMD, FUT8, CYP2C45, DHRSX, and CYP2C18) and with glycol-metabolism(GCNT2, ELOVL 6, and FASN), were higher in the XH chickens than in the fast-growing chickens. RT-PCR validated high expression levels of nine out of 12 genes in fat tissues. The G1257069A and T1247123C of the ACSBG2 gene were significantly associated with abdominal fat weight. The G4928024A of the FASN gene were significantly associated with fat bandwidth, and abdominal fat percentage. The C4930169T of the FASN gene was associated with abdominal fat weight while the A59539099G of the ELOVL 6 was significantly associated with subcutaneous fat. The A8378815G of the DDT was associated with fat band width.Conclusion: The differences in fat deposition were reflected with differential gene expressions in fast and slow growing chickens.Hirwa Claire D'Andre Wallace Paul Xu Shen Xinzheng Jia Rong Zhang Liang Sun Xiquan Zhang 2014Journal of Animal Science and Biotechnology2014,5,1:7
14粉尘致病性科研成果急需与粉尘防治相结合显示文摘生产性粉尘是严重的职业有害因素,矽尘与石棉尘是两种主要的、危害性很强的生产性粉尘。结晶型二氧化硅不仅可导致肺纤维化,还可导致癌症。中国是世界上接触粉尘和患尘肺病人数最多的国家。至2006年底,中国尘肺病累计病例数为616442例,死亡146195例。在过去5年(2001至2006年)中,每年新病例数为8000~10000例,其中主要为矽肺和煤工尘肺。中国政府高度重视粉尘控制、粉尘毒性及粉尘致病机制的研究,并在这些方面取得了巨大成绩。刘秉慈 陈卫红 William E. Wallace 2008中华劳动卫生职业病杂志2008,26,1:7
15生物技术在反刍动物营养中的应用显示文摘R.John Wallace 龙玲 2002中国畜牧兽医2002,29,6:6
16Endoscopic Tri-Modal Imaging Is More Effective Than Standard Endoscopy in Identifying Early-Stage Neoplasia in Barrett’s Esophagus显示文摘Wouter L. Curvers Lorenza Alvarez Herrero Michael B. Wallace Louis–Michel Wong Kee Song Krish Ragunath Herbert C. Wolfsen Ganapathy A. Prasad Kenneth K. Wang Venkataraman Subramanian Bas L.A.M. Weusten Fiebo J. Ten Kate Jacques J.G.H.M. Bergman 2010Gastroenterology2010,,4:6
17Transition metal oxides as hole-transporting materials in organic semiconductor and hybrid perovskite based solar cells显示文摘Organic polymer solar cells(OSCs) and organic-inorganic hybrid perovskite solar cells(PSCs) have achieved notable progress over the past several years.A central topic in these fields is exploring electronically efficient,stable and effective hole-transporting layer(HTL) materials.The goal is to enhance hole-collection ability,reduce charge recombination,increase built-in voltage,and hence improve the performance as well as the device stability.Transition metal oxides(TMOs) semiconductors such as NiO_x,CuO_x,CrO_x,MoO_x,WO_3,and V_2O_5,have been widely used as HTLs in OSCs.These TMOs are naturally adopted into PSC as HTLs and shows their importance.There are similarities,and also differences in applying TMOs in these two types of main solution processed solar cells.This concise review is on the recent developments of transition metal oxide HTL in OSCs and PSCs.The paper starts from the discussion of the cation valence and electronic structure of the transition metal oxide materials,followed by analyzing the structure-property relationships of these HTLs,which we attempt to give a systematic introduction about the influences of their cation valence,electronic structure,work function and film property on device performance.Pingli Qin Qin He Dan Ouyang Guojia Fang Wallace C.H. Choy Gang Li 2017Science China Chemistry2017,60,4:6
18Artificial intelligence in gastroenterology: A state-of-the-art review显示文摘The development of artificial intelligence(AI)has increased dramatically in the last 20 years,with clinical applications progressively being explored for most of the medical specialties.The field of gastroenterology and hepatology,substantially reliant on vast amounts of imaging studies,is not an exception.The clinical applications of AI systems in this field include the identification of premalignant or malignant lesions(e.g.,identification of dysplasia or esophageal adenocarcinoma in Barrett’s esophagus,pancreatic malignancies),detection of lesions(e.g.,polyp identification and classification,small-bowel bleeding lesion on capsule endoscopy,pancreatic cystic lesions),development of objective scoring systems for risk stratification,predicting disease prognosis or treatment response[e.g.,determining survival in patients post-resection of hepatocellular carcinoma),determining which patients with inflammatory bowel disease(IBD)will benefit from biologic therapy],or evaluation of metrics such as bowel preparation score or quality of endoscopic examination.The objective of this comprehensive review is to analyze the available AI-related studies pertaining to the entirety of the gastrointestinal tract,including the upper,middle and lower tracts;IBD;the hepatobiliary system;and the pancreas,discussing the findings and clinical applications,as well as outlining the current limitations and future directions in this field.Paul T Kröner Megan ML Engels Benjamin S Glicksberg Kipp W Johnson Obaie Mzaik Jeanin E van Hooft Michael B Wallace Hashem B El-Serag Chayakrit Krittanawong 2021World Journal of Gastroenterology2021,27,40:6
19Use of scoring systems for assessing and reporting the outcome results from shoulder surgery and arthroplasty显示文摘To investigate shoulder scoring systems used in Europe and North America and how outcomes might be classified after shoulder joint replacement. All research papers published in four major journals in 2012 and 2013 were reviewed for the shoulder scoring systems used in their published papers. A method of identifying how outcomes after shoulder arthroplasty might be used to categorize patients into fair, good, very good and excellent outcomes was explored using the outcome evaluations from patients treated in our own unit. A total of 174 research articles that were published in the four journals used some form of shoulder scoring system. The outcome from shoulder arthroplasty in our unit has been evaluated using the constant score(CS) and the oxford shoulder score and these scores have been used to evaluate individual patient outcomes. CSs of < 30 = unsatisfactory; 30-39 = fair; 40-59 = good; 60-69 = very good; and 70 and over = excellent. The most popular shoulder scoring systems in North America were Simple Shoulder Test and American shoulder and elbow surgeons standard shoulder assessment form score and in Europe CS, Oxford Shoulder Score and DASH score.Simon Booker Nawaf Alfahad Martin Scott Ben Gooding W Angus Wallace 2015World Journal of Orthopedics2015,6,2:5
20妊娠期高血压免疫因子、肿瘤坏死因子α、血管紧张素Ⅱ1型受体自身抗体对妊娠可溶性fms样酪氨酸1和可溶性Endoglin产物的影响显示文摘最近研究发现先兆子痫中血管新生因子、可溶性fms样酪氨酸激酶(sFlt-1)和可溶性Endoglin(sEn-doglin)不平衡;然而尚不清楚它们过度分泌的启动机制。方法:长期给予怀孕大鼠肿瘤坏死因子α(tumor necrosis factor-α,TNF-α)或抗血管紧张素Ⅱ受体的自身抗体(AT1-AA),测定其循环和胎盘的sFlt-1和(或)sEndoglin以确定这些因素的免疫调节作用。Parrish MR Murphy SR Rutland S Wallace K Wenzel K Wallukat G Keiser S Ray LF Dechend R Martin JN Granger JP La Marca B 黄晓斌 2010中华高血压杂志2010,18,12:5
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