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13064篇 您的检索式:作者名="BROWNS M"
    题名 作者 年代 出处 被引量
1The calcium sensing receptor: from calcium sensing to signaling显示文摘The Ca2+-sensing receptor(the Ca SR),a G-protein-coupled receptor,regulates Ca2+ homeostasis in the body by monitoring extracellular levels of Ca2+([Ca2+]o) and responding to a diverse array of stimuli.Mutations in the Ca2+-sensing receptor result in hypercalcemic or hypocalcemic disorders,such as familial hypocalciuric hypercalcemia,neonatal severe primary hyperparathyroidism,and autosomal dominant hypocalcemic hypercalciuria.Compelling evidence suggests that the Ca SR plays multiple roles extending well beyond not only regulating the level of extracellular Ca2+ in the human body,but also controlling a diverse range of biological processes.In this review,we focus on the structural biology of the Ca SR,the ligand interaction sites as well as their relevance to the disease associated mutations.This systematic summary will provide a comprehensive exploration of how the Ca SR integrates extracellular Ca2+ into intracellular Ca2+ signaling.ZHANG Chen MILLER Cassandra Lynn BROWN Edward M YANG Jenny J. 2015Science China(Life Sciences)2015,58,1:14
2Artificial intelligence in gastrointestinal endoscopy:The future is almost here显示文摘Artificial intelligence(AI) enables machines to provide unparalleled value in a myriad of industries and applications. In recent years, researchers have harnessed artificial intelligence to analyze large-volume, unstructured medical data and perform clinical tasks, such as the identification of diabetic retinopathy or the diagnosis of cutaneous malignancies. Applications of artificial intelligence techniques, specifically machine learning and more recently deep learning, are beginning to emerge in gastrointestinal endoscopy. The most promising of these efforts have been in computeraided detection and computer-aided diagnosis of colorectal polyps, with recent systems demonstrating high sensitivity and accuracy even when compared to expert human endoscopists. AI has also been utilized to identify gastrointestinal bleeding, to detect areas of inflammation, and even to diagnose certain gastrointestinal infections. Future work in the field should concentrate on creating seamless integration of AI systems with current endoscopy platforms and electronic medical records, developing training modules to teach clinicians how to use AI tools, and determining the best means for regulation and approval of new AI technology.Muthuraman Alagappan Jeremy R Glissen Brown Yuichi Mori Tyler M Berzin 2018World Journal of Gastrointestinal Endoscopy2018,10,10:14
3水解蛋白质化学改性(英文)显示文摘从含铬废弃物提取的水解蛋白质与不同量的戊二醛 ,在不同的温度下反应。用聚酰胺凝胶电泳法 (SDS -PAGE)分析了改性蛋白质的分子量及分子量分布。用CanonManning粘度法测定了改性产物的粘度。实验表明改性产物的分子量随戊二醛的用量增加而增加。最佳的戊二醛用量约为水解胶原质量的 12 % ,反应温度大于 6 0℃。同时 ,用改性产物做了皮革的填充实验 ,用萤光标记改性胶原 ,通过扫描电镜研究了填充皮革的纤维结构。研究结果表明 ,改性产物具有较好的填充性能 ,采用适当的应用工艺 ,改性产物可能用作皮革填充剂。陈武勇 Brown E M Taylor M M Cooke P H Marmer W N 2002四川大学学报(工程科学版)2002,34,6:9
4板块构造机制在显生宙初期发生转变显示文摘虽然目前对于板块构造何时成为主要构造机制存在争议,但是研究者普遍认为在古太古代已经完成转变。元古代时期,哥伦比亚超大陆向罗迪尼亚超大陆的转换,并未发生超大陆的完全裂解和聚合,而是岩石圈和环境的相对稳定期。相比之下,成冰期至今则发育有大量的被动大陆边缘,以及在425~225 Ma期间大幅增加的裂谷和大陆岛弧长度,表明存在与潘吉亚超大陆形成密切相关的激烈板块构造活动。袁超(编译) Brown M Kirkland C L Johnson T E 2020矿物岩石地球化学通报2020,39,4:9
5Mycophenolate mofetil for drug-induced vanishing bile duct syndrome显示文摘Amoxicillin/clavulanate is associated with liver injury, mostly of a cholestatic pattern. While outcomes are usually benign, progression to cirrhosis and death has been reported. The role of immunosuppressive therapy for patients with a protracted course is unclear. We report the case of an elderly patient who developed prolonged cholestasis secondary to amoxicillin/clavulanate. Vanishing bile duct syndrome was confirmed by sequential liver biopsies. The patient responded to prednisone treatment, but could not be weaned off corticosteroids, even when azathioprine was added. Complete withdrawal of both prednisone and azathioprine was possible by using mycophenolate mofetil, an inosine monophosphate dehydrogenase inhibitor. Sustained remission has been maintained for more than 3 years with low-dose mycophenolate mofetil.S Simona Jakab A Brian West Dennis M Meighan Robert S Brown Jr William B Hale 2007World Journal of Gastroenterology2007,13,45:8
6Dietary advanced glycation end-products aggravate non-alcoholic fatty liver disease显示文摘AIM To determine if manipulation of dietary advanced glycation end product(AGE), intake affects nonalcoholic fatty liver disease(NAFLD) progression and whether these effects are mediated via RAGE. METHODS Male C57Bl6 mice were fed a high fat, high fructose, high cholesterol(HFHC) diet for 33 wk and compared with animals on normal chow. A third group were given a HFHC diet that was high in AGEs. Another group was given a HFHC diet that was marinated in vinegar to prevent the formation of AGEs. In a second experiment, RAGE KO animals were fed a HFHC diet or a high AGE HFHC diet and compared with wildtype controls. Hepatic biochemistry, histology, picrosirius red morphometry and hepatic mR NA were determined. RESULTS Long-term consumption of the HFHC diet generated significant steatohepatitis and fibrosis after 33 wk. In this model, hepatic 4-hydroxynonenal content(a marker of chronic oxidative stress), hepatocyte ballooning, picrosirius red staining, α-smooth muscle actin and collagen type 1A gene expression were all significantly increased. Increasing the AGE content of the HFHC diet by baking further increased these markers of liver damage, but this was abrogated by pre-marination in acetic acid. In response to the HFHC diet, RAGE-/-animals developed NASH of similar severity to RAGE+/+ animals but were protected from the additional harmful effects of the high AGE containing diet. Studies in isolated Kupffer cells showed that AGEs increase cell proliferation and oxidative stress, providing a likely mechanism through which these compounds contribute to liver injury. CONCLUSION In the HFHC model of NAFLD, manipulation of dietary AGEs modulates liver injury, inflammation, and liver fibrosis via a RAGE dependent pathway. This suggests that pharmacological and dietary strategies targeting the AGE/RAGE pathway could slow the progression of NAFLD.Christopher Leung Chandana B Herath Zhiyuan Jia Sof Andrikopoulos Bronwyn E Brown Michael J Davies Leni R Rivera John B Furness Josephine M Forbes Peter W Angus 2016World Journal of Gastroenterology2016,22,35:7
7Short-term endpoints of conventional versus laparoscopic-assisted surgery in patients with colorectal cancer (MRC CLASICC trial): multicentre, randomised controlled trial显示文摘Pierre J Guillou Philip Quirke Helen Thorpe Joanne Walker David G Jayne Adrian MH Smith Richard M Heath Julia M Brown 2005The Lancet . 2005 (9472)2005,,9472:6
8Subcurative radiation significantly increases cell proliferation, invasion, and migration of primary glioblastoma multiforme in vivo显示文摘Tumor cell proliferation, infiltration, migration, and neovascularization are known causes of treatment resistance in glioblastoma multiforme(GBM). The purpose of this study was to determine the effect of radiation on the growth characteristics of primary human GBM developed in a nude rat. Primary GBM cells grown from explanted GBM tissues were implanted orthotopically in nude rats. Tumor growth was confirmed by magnetic resonance imaging on day 77(baseline) after implantation. The rats underwent irradiation to a dose of 50 Gy delivered subcuratively on day 84 postimplantation(n = 8), or underwent no radiation(n = 8). Brain tissues were obtained on day 112(nonirradiated) or day 133(irradiated). Immunohistochemistry was performed to determine tumor cell proliferation(Ki-67) and to assess the expression of infiltration marker(matrix metalloproteinase-2, MMP-2) and cell migration marker(CD44). Tumor neovascularization was assessed by microvessel density using von-Willebrand factor(vWF) staining. Magnetic resonance imaging showed well-developed, infiltrative tumors in 11 weeks postimplantation. The proportion of Ki-67-positive cells in tumors undergoing radiation was(71 ± 15)% compared with(25 ± 12)% in the nonirradiated group(P = 0.02). The number of MMP-2-positive areas and proportion of CD44-positive cells were also high in tumors receiving radiation, indicating great invasion and infiltration. Microvessel density analysis did not show a significant difference between nonirradiated and irradiated tumors. Taken together, we found that subcurative radiation significantly increased proliferation, invasion, and migration of primary GBM. Our study provides insights into possible mechanisms of treatment resistance following radiation therapy for GBM.Adarsh Shankar Sanath Kumar Asm Iskander Nadimpalli RS Varma Branislava Janic Ana deCarvalho Tom Mikkelsen Joseph A Frank Meser M Ali Robert A Knight Stephen Brown Ali S Arbab 2014Chinese Journal of Cancer2014,33,3:5
9Acute pancreatitis in aging animals:Loss of pancreatitis-associated protein protection?显示文摘AIM:To investigate the effect of age on severity of acute pancreatitis(AP) using biochemical markers,histology and expression of the protective pancreatitisassociated proteins(PAPs).METHODS:AP was induced via intraductal injection of 4% sodium taurocholate in young and old rats.Sera and pancreata were assayed at 24 h for the parameters listed above;we also employed a novel molecular technique to assess bacterial infiltration using polymerase chain reaction to measure bacterial genomic ribosomal RNA.RESULTS:At 24 h after induction of AP,the pancreata of older animals had less edema(mean ± SE histologic score of young vs old:3.11 ± 0.16 vs 2.50 ±-0.11,P < 0.05),decreased local inflammatory response(histologic score of stromal infiltrate:3.11 ± 0.27 vs 2.00 ± 0.17,P < 0.05) and increased bacterial infiltration(174% ± 52% increase from sham vs 377% ± 4%,P < 0.05).A decreased expression of PAP1 and PAP2 was demonstrated by Western blotting analysis and immunohistochemical staining.There were no differences in serum amylase and lipase activity,or tissue myeloperoxidase or monocyte chemotactic protein-1 levels.However,in the most-aged group,serum C-reactive protein levels were higher(young vs old:0.249 ± 0.04 mg/dL vs 2.45 ± 0.68 mg/dL,P < 0.05).CONCLUSION:In older animals,there is depressed PAP expression related to a blunted inflammatory response in AP which is associated with worsened bacterial infiltration and higher C-reactive protein level;this may explain the more aggressive clinical course.Sophia Fu Albert Stanek Cathy M Mueller Nefertti A Brown Chongmin Huan Martin H Bluth Michael E Zenilman 2012World Journal of Gastroenterology2012,18,26:5
10Short-term endpoints of conventional versus laparoscopic-assisted surgery in patients with colorectal cancer (MRC CLASICC trial): multicentre, randomised controlled trial显示文摘Pierre J Guillou Philip Quirke Helen Thorpe Joanne Walker David G Jayne Adrian MH Smith Richard M Heath Julia M Brown 2005The Lancet2005,,9472:4
11Sentinel-lymph-node resection compared with conventional axillary-lymph-node dissection in clinically node-negative patients with breast cancer: overall survival findings from the NSABP B-32 randomised phase 3 trial显示文摘David N Krag Stewart J Anderson Thomas B Julian Ann M Brown Seth P Harlow Joseph P Costantino Takamaru Ashikaga Donald L Weaver Eleftherios P Mamounas Lynne M Jalovec Thomas G Frazier R Dirk Noyes André Robidoux Hugh MC Scarth Norman Wolmark 2010Lancet Oncology2010,,10:3
12评估超高温灭菌奶安全和质量的2个重要参数显示文摘使用了一套电子程序表格,用于评估在连续热交换器中经过不同升温和降温处理后牛奶的安全和质量参数。安全参数包括致死率F0值、微生物灭活B*值;质量参数包括化学变化C*值、硫胺素损失量、乳果糖生成量、美拉德褐变及羟甲基糠醛值等。在牛奶中试加工车间中,利用升温和降温的温度变化数值可对牛奶的上述参数进行预测,温度范围为120~150℃,时间包括4、27和58 s。在同一中试车间按上述条件对牛奶进行加工,并选择一系列牛奶样品对该电子程序进行校正。结果表明,所有C*〈3的牛奶样品阿沙芬堡浊度都呈阳性。在乳果糖活化能等于122 k J/mol时,预测值和试验观测值一致性最好。最佳质量终产品对应的牛奶加工条件为135℃/10 s,此时B*=1.24,C*=0.55。在此条件下加工的牛奶与其它2个牛奶相比,感官特性与C*=1.5对应条件下加工的牛奶类似,但与C*=6对应条件下加工的牛奶不同。牛奶刚加工完成时,仅热处理非常强烈的样品有可见的褐变,若在≥30℃条件下存储,褐变会变得比较明显。该电子程序可以用来比较不同热处理模式下生产产品的特性;或作为一种手段,用于在升温和降温速率固定的情况下UHT设备运行条件的优化。陈美霞 Browning E Lewis M Macdougall D 2016中国乳业2016,,5:3
13Patterns of genomic and phenomic diversity in wine and table grapes显示文摘Grapes are one of the most economically and culturally important crops worldwide,and they have been bred for both winemaking and fresh consumption.Here we evaluate patterns of diversity across 33 phenotypes collected over a 17-year period from 580 table and wine grape accessions that belong to one of the world’s largest grape gene banks,the grape germplasm collection of the United States Department of Agriculture.We find that phenological events throughout the growing season are correlated,and quantify the marked difference in size between table and wine grapes.By pairing publicly available historical phenotype data with genome-wide polymorphism data,we identify large effect loci controlling traits that have been targeted during domestication and breeding,including hermaphroditism,lighter skin pigmentation and muscat aroma.Breeding for larger berries in table grapes was traditionally concentrated in geographic regions where Islam predominates and alcohol was prohibited,whereas wine grapes retained the ancestral smaller size that is more desirable for winemaking in predominantly Christian regions.We uncover a novel locus with a suggestive association with berry size that harbors a signature of positive selection for larger berries.Our results suggest that religious rules concerning alcohol consumption have had a marked impact on patterns of phenomic and genomic diversity in grapes.ZoëMigicovsky Jason Sawler Kyle M Gardner Mallikarjuna K Aradhya Bernard H Prins Heidi R Schwaninger Carlos D Bustamante Edward S Buckler Gan-Yuan Zhong Patrick J Brown Sean Myles 2017Horticulture Research2017,4,1:3
14Conservation tillage systems for cotton production 显示文摘Browns M Whitwell J T Touchton J T etal 1985Soil Science Society of America Journal1985,49,5:2
15Short-term endpoints of conventional versus laparoscopic-assisted surgery in patients with colorectal cancer (MRC CLASICC trial): multicentre, randomised controlled trial显示文摘Pierre J Guillou Philip Quirke Helen Thorpe Joanne Walker David G Jayne Adrian MH Smith Richard M Heath Julia M Brown 20052005 (9472)2005,,9472:2
16Radiometric correction of visible and infrared remote sensing data at the Canada Centre for Remote Sensing显示文摘AHERN F J Brown R J Cihlar J Gauthier R Murphy J Neville R A and Teillet P M 1984International Journal of Remote Sensing1984,8,:2
17Outcomes of Neoadjuvant Transarterial Chemoembolization to Downstage Hepatocellular Carcinoma Before Liver Transplantation显示文摘William C. Chapman M B. Majella Doyle Jourdan E. Stuart Neeta Vachharajani Jeffrey S. Crippin Christopher D. Anderson Jeffrey A. Lowell Surendra Shenoy Michael D. Darcy Daniel B. Brown 2008Annals of Surgery2008,,4:2
18Production and Potential Uses of Co-products from Solid Tannery Waste显示文摘Eleanor M Brown el at 1996JALCA1996,191,:2
19Feasibility of percutaneous transluminal angioplasty for carotid artery stenosis显示文摘Brown M M Butler P Gibbs J 1990J Neurol Neurosurg Psychiatry1990,53,3:2
20B7-1 and B7-2 costimulatory molecules activate differentially the Th1/Th2 developmental pathways: Application to autoimmune disease therapy显示文摘Vijay K Kuchroo Mercy Prabhu Das Julia A Brown Ann M Ranger Scott S Zamvil Raymond A Sobel Howard L Weiner Nasrin Nabavi Laurie H Glimcher 1995Cell1995,,5:2
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