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4297篇 您的检索式:作者名="Han F"
    题名 作者 年代 出处 被引量
1Dietary and metabolomic determinants of relapse in ulcerative colitis patients: A pilot prospective cohort study显示文摘AIM To identify demographic, clinical, metabolomic, and lifestyle related predictors of relapse in adult ulcerative colitis(UC) patients.METHODS In this prospective pilot study, UC patients in clinical remission were recruited and followed-up at 12 mo to assess a clinical relapse, or not. At baseline information on demographic and clinical parameters was collected. Serum and urine samples were collected for analysis of metabolomic assays using a combined direct infusion/liquid chromatography tandem mass spectrometry and nuclear magnetic resolution spectroscopy. Stool samples were also collected to measure fecal calprotectin(FCP). Dietary assessment was performed using a validated self-administered food frequency questionnaire. RESULTS Twenty patients were included(mean age: 42.7 ± 14.8 years, females: 55%). Seven patients(35%) experienced a clinical relapse during the follow-up period. While 6 patients(66.7%) with normal body weight developed a clinical relapse, 1 UC patient(9.1%) who was overweight/obese relapsed during the follow-up(P = 0.02). At baseline, poultry intake was significantly higher in patients who were still in remission during follow-up(0.9 oz vs 0.2 oz, P = 0.002). Five patients(71.4%) with FCP > 150 μg/g and 2 patients(15.4%) with normal FCP(≤ 150 μg/g) at baseline relapsed during the follow-up(P = 0.02). Interestingly, baseline urinary and serum metabolomic profiling of UC patients with or without clinical relapse within 12 mo showed a significant difference. The most important metabolites that were responsible for this discrimination were trans-aconitate, cystine and acetamide in urine, and 3-hydroxybutyrate, acetoacetate and acetone in serum. CONCLUSION A combination of baseline dietary intake, fecal calprotectin, and metabolomic factors are associated with risk of UC clinical relapse within 12 mo.Ammar Hassanzadeh Keshtel iFloris F van den Brand Karen L Madsen Rupasri Mandal Rosica ValchevaKaren I Kroeker Beomsoo Han Rhonda C Bell Janis Cole Thomas Hoevers David S Wishart Richard N Fedorak Levinus A Dieleman 2017World Journal of Gastroenterology2017,23,21:9
2A long-form α-neurotoxin from cobra venom produces potent opioid-independent analgesia显示文摘Aim:In light of the antinociceptive activity of the short-chain neurotoxin,cobrotoxin,and other acetylcholine antagonists,the antinociceptive activity andmechanisms of cobratoxin(CTX),a long-chain postsynaptic α-neurotoxin,wasinvestigated in rodent pain models.Methods:CTX was administered intraperito-neally(30,45,68 μg/kg),intra-cerebral ventricularly(4.5 μg/kg)or microinjectedinto periaqueductal gray(PAG;4.5 μg/kg).The antinociceptive action was testedusing the hot-plate and acetic acid writhing tests m mice and rats.The involve-ment of the cholinergic system and opioid system in CTX-induced analgesia wasexamined by pretreatment of animals with atropine(0.5 mg/kg,im;or 10 mg/kg,ip)or naloxone(1 and 5 mg/kg,ip).The effect of CTX on motor activity was testedusing the Animex test.Results:CTX exhibited a dose-dependent analgesic ac-tion in mice as determined by both the hot-plate and acetic acid writhing tests.The peak effect of analgesia was seen 3 h after administration.In the mouse aceticacid writhing test,the intra-cerebral ventricular administration of CTX at 4.5 μg/kg(1/12th of a systemic dose)produced marked analgesic effects.Microinjection ofCTX(4.5 μgkg)into the PAG region did not elicit an analgesic action in rats in thehot-plate test.Atropine at 0.5 mg/kg(im)and naloxone at 1 and 5 mg/kg(ip)bothfailed to block the analgesic effects of CTX,but atropine at 10 mg/kg(ip)didantagonize the analgesia mediated by CTX in the mouse acetic acid writhing test.Acetylsalicylic acid(300 mg/kg)did not enhance the analgesic effects of CTX.Atthe highest effective dose of 68 μg/kg the neurotoxin did not change the sponta-neous mobility of mice.Conclusion:CTX has analgesic effects,which are medi-ated in the central nervous system though not through the PAG.The centralcholinergic system but not opioid system appears to be involved in theantinociceptive action of CTX.Zhi-xin CHEN Hui-ling ZHANG Zhen-lun GU Bo-wen CHEN Rong HAN Paul F REID Laurence N RAYMOND Zheng-hong QIN 2006Acta Pharmacologica Sinica2006,27,4:7
3Suppression of complete Freund's adjuvant-induced adjuvant arthritis by cobratoxin显示文摘Yan-li LIU Hai-ming LIN Rong ZOU Jun-chao WU Rong HAN Laurence N RAYMOND Paul F REID Zheng-hong QIN 2009Acta Pharmacologica Sinica2009,30,2:6
4Colonoscopic yield of colorectal neoplasia in daily clinical practice显示文摘AIM:To assess the prevalence and location of ad-vanced neoplasia in patients undergoing colonoscopy,and to compare the yield per indication.METHODS:In a multicenter colonoscopy survey (n = 18 hospitals) in the Amsterdam area (Northern Holland),data of all colonoscopies performed during a three month period in 2005 were analyzed. The location and the histological features of all colonic neoplasia were recorded. The prevalence and the distribution ofadvanced colorectal neoplasia and differences in yield between indication clusters were evaluated. Advanced neoplasm was defi ned as adenoma > 10 mm in size,with > 25% villous features or with high-grade dyspla-sia or cancer.RESULTS:A total of 4623 eligible patients underwent a total colonoscopy. The prevalence of advanced neo-plasia was 13%,with 281 (6%) adenocarcinomas and 342 (7%) advanced adenomas. Sixty-seven percent and 33% of advanced neoplasia were located in the distal and proximal colon,respectively. Of all patients with right-sided advanced neoplasia (n = 228),51% had a normal distal colon,whereas 27% had a syn-chronous distal adenoma. Ten percent of all colono-scopies were performed in asymptomatic patients,7% of whom had advanced neoplasia. In the respective procedure indication clusters,the prevalence of right-sided advanced neoplasia ranged from 11%-57%. CONCLUSION:One out of every 7-8 colonoscopies yielded an advanced colorectal neoplasm. Colonoscopy is warranted for the evaluation of both symptomatic and asymptomatic patients.Jochim S Terhaar sive Droste Mike E Craanen Rene WM van der Hulst Joep F Bartelsman Dick P Bezemer Kim R Cappendijk Gerrit A Meijer Linde M Morsink Pleun Snel Hans ARE Tuynman Roy LJ van Wanrooy Eric IC Wesdorp Chris JJ Mulder 2009World Journal of Gastroenterology2009,15,9:6
5Kallikrein-related peptidases 6 and 10 are elevated in cerebrospinal fluid of patients with Alzheimer’s disease and associated with CSF-TAU and FDG-PET显示文摘Background:Alterations in the expression of human kallikrein-related peptidases(KLKs)have been described in patients with Alzheimer’s disease(AD).We elucidated the suitability of KLK6,KLK8 and KLK10 to distinguish AD from NC and explored associations with established AD biomarkers.Methods:KLK levels in cerebrospinal fluid(CSF),as determined by ELISA,were compared between 32 AD patients stratified to A/T/(N)system with evidence for amyloid pathology and of 23 normal controls with normal AD biomarkers.Associations between KLK levels and clinical severity,CSF and positron emission tomography(PET)based AD biomarkers were tested for.Results:Levels of KLK6 and KLK10 were significantly increased in AD.KLK6 differed significantly between AD A+/T+/N+and AD A+/T−/N+or NC with an AUC of 0.922.CSF pTau and tTau levels were significantly associated with KLK6 in AD.Conclusions:KLK6 deserves further investigations as a potential biomarker of Tau pathology in AD.Oliver Goldhardt Inanna Warnhoff Igor Yakushev Ilijana Begcevic Hans Förstl Viktor Magdolen Antoninus Soosaipillai Eleftherios Diamandis Panagiotis Alexopoulos Timo Grimmer 2019Translational Neurodegeneration2019,8,1:3
6油炸食品与心血管病风险和全因死亡率的关系:观察性研究的荟萃分析显示文摘研究者进行了一项荟萃分析,包括剂量反应分析,以定量确定油炸食品摄入与普通成年人群心血管病风险和全因死亡率之间的关系。方法:研究者在PubMed、EMBASE和Web of Science上检索2020年4月11日之前的所有文章。应用随机效应模型估计总的相对危险度(relative risks,RR)和95%CI。结果:与最低油炸食品摄入量相比,最高摄入量者主要心血管事件的总RR(95%CI)=1.28(1.15~1.43),n=17,I^(2)=82.0%,其中前瞻性研究:1.24(1.12~1.38),n=13,I^(2)=75.7%.刘青(译) 练桂丽(审校) Qin P Zhang M Han M Liu D Luo X Xu L Zeng Y Chen Q Wang T Chen X Zhou Q Li Q Qie R Wu X Li Y Zhang Y Wu Y Hu D Hu F 2021中华高血压杂志2021,29,2:3
7残余应力导致三层聚烯烃管道防腐层剥离与开裂显示文摘这是美国运输部发起的研究项目,一个管道防腐层专家团队参与了本研究项目,评价了三层聚烯烃管道外防腐涂层(3LPO)的完整性。研究表明,三层聚烯烃管道外防腐涂层(3LPO)存在剥离和面层开裂两大完整性问题。过去几年里,据文献报道,三层聚烯烃管道外防腐涂层(3LPO)的熔结环氧粉末(FBE)底漆与钢管界面上发生多起防腐层剥离事故,以及聚丙烯(PP)面层发生开裂事故。这些防腐层事故引起人们对使用三层聚烯烃管道外防腐涂层(3LPO)的关注。一般来讲,三层聚烯烃管道外防腐涂层(3LPO)采用比较厚的聚烯烃面层增强防腐层抗机械损伤和防止水渗透的能力。但是,聚烯烃的热膨胀系数比钢材高得多,结果在防腐层系统里产生比较高的残余热应力。因为残余应力高,造成防腐层剥离,尤其在管端截短防腐层和任何防腐层的边上,因为这些是高应力集中部位。特别是假如钢管表面预处理不当,就无法保证防腐层持久达到很强的粘合强度。如果熔结环氧粉末(FBE)底漆配方选择不当,发生热氧化降解,也导致防腐层过早失效。如果使用温度很高,聚丙烯也会因为热氧化降解而变脆。在残余应力下,这样脆性的聚丙烯面层就会开裂。本文分析了三层聚烯烃管道外防腐涂层(3LPO)中的残余应力,并且探讨了残余应力对三层聚烯烃管道外防腐涂层(3LPO)剥离和聚丙烯(PP)面层开裂机理的影响。B.T.A.Cheng S Hung-jue J Han D Wong A Kehr M Mallozzi F Aguirre H Pham W Snider 王向农(译) 2011防腐保温技术2011,19,3:3
8Methods for measuring soil infiltration:State of the art显示文摘Soil infiltration is the process by which water on the soil surface penetrates the soil.Quantifying the soil infiltration capacity(soil infiltrability)is very important for determining components of the hydrological modeling,irrigation design and many other natural or man made processes.In this paper,commonly used methods for soil infiltration rate measurement with their principles and application conditions are introduced.The advantages and disadvantages of each method under various application conditions are discussed for comparison.Three new methods for soil infiltrability measurement,including the corresponding algorithm models,and the experimental apparatus and procedures are introduced.These analyses should facilitate the choice of method used for soil infiltrability measurement.Mao Lili V F Bralts Pan Yinghua Liu Han Lei Tingwu 2008International Journal of Agricultural and Biological Engineering2008,1,1:2
9Quality control measures for lowering the seroconversion rate of hemodialysis patients with hepatitis B or C virus显示文摘BACKGROUND: Hemodialysis (HD) patients are at high risk of infection by hepatitis B virus (HBV) or hepatitis C virus (HCV). The present study was designed to determine the impact of quality control measures on the prevention of transmission of blood-borne viruses. METHODS: A total of 6182 adult maintenance HD patients from all HD units in Zhejiang Province were recruited on January 1, 2007. The baseline demographic and clinical characteristics were recorded and all patients were followed up until death or survival at 4 years later. The Quality Control Standards of Hemodialysis were gradually implemented in HD units. The HBV or HCV seroconversion rates of the recruited patients were calculated and compared every year during the observation period. RESULTS: The prevalence of HBV was 8.3% at the beginning of the study, and 6.6% for HCV. With the implementation of the HD quality control measures, the HBV seroconversion rate tended to decrease year by year (χ 2 =6.620, P=0.085), and the HCV seroconversion rate decreased significantly (χ 2 =10.41, P=0.015). Compared with the data in 2007, the HBV seroconversion rate (χ 2 =4.204, P=0.040, relative risk ratio 0.393, 95% CI 0.156-0.991) and the HCV seroconversion rate (χ 2 =7.373, P=0.007, relative risk ratio 0.386, 95% CI 0.189-0.787) decreased significantly in 2010. CONCLUSION: Quality control measures for HD decreased the seroconversion rates of HBV or HCV in HD patients, showing that updated quality control measures reduce the risk for transmission of blood-borne viruses in the HD population.Jing Yuan,Yi Yang, Fei Han, Ping Zhang, Xiao-Ying Du, Hua Jiang and Jiang-Hua Chen The Kidney Disease Center, First Affiliated Hospital, Zhejiang University School of Medicine (Yuan J, Yang Y, Han F, Zhang P, Du XY, Jiang H and Chen JH) and Hemodialysis Quality Control Center of Zhejiang Province (Yuan J, Zhang P, Du XY and Chen JH), Hangzhou 310003, China 2012Hepatobiliary & Pancreatic Diseases International2012,11,3:2
10甜菜碱对肥育猪生长激素脉冲释放和血清代谢的影响显示文摘用添加含量为0和0.125%甜菜碱的日粮饲喂肥育猪,试验对杂交肥育猪日粮中甜菜碱对猪的生长性能、生长激素(GH)脉冲释放及血清代谢的影响进行研究。每试验组3个重复,每个重复8头猪(4头去势公猪,4头母猪),试验在饲喂后3h内每15min采集一次血液样本,测定生长激素脉冲释放。结果表明:添加甜菜碱组平均日增重增加5.45%(P〈0.05),而平均日采食量和饲料转化率则不受影响。Huang Q C Xu Z R Han X Y Li W F 2007饲料博览(技术版)2007,,7:2
11基于分布式传感网络的结构模态识别方法显示文摘结构的模态参数识别是结构健康监测系统的基本任务。随着工程结构的日益大型化和复杂化,振动测试时需要布置大量的传感器。传统的集中采集和处理技术将难以胜任海量数据的处理要求,采用无线智能传感器的结构健康监测系统正是应运而生的新方向,而分布式采集和处理是其特点。在无线智能传感网络拓扑结构中采用分布式算法求解结构整体振型,利用随机子空间法识别各子结构模态,结合粒子群优化算法调整子振型获取结构整体振型。通过混凝土钢管拱桥模型试验验证了分布式算法的可行性,并利用模态置信度(MAC)对比分析了由分布式模态识别方法和集中式模态识别方法得到的结果,结果表明两种算法吻合较好。张敏 谢慧才 Sung han Sim B F Spencer Jr 2010土木工程学报2010,43,3:2
12卫星专用传感器微波成像仪/探测仪(SSMIS)观测资料在天气和气候研究中的应用(英文)显示文摘2003年10月18日,美国国防气象卫星计划成功发射搭载了专用传感器微波成像仪/探测仪的F-16卫星。然而由于天线自身热辐射和校准暖黑体的不稳定,第一个专用传感器微波成像仪/探测仪出现了一些重要的异常观测。美国海军实验室与美国国家海洋和大气管理局(NOAA)分别开发了两种算法来订正这些异常值。剔除了定标异常值后,专用传感器微波成像仪/探测仪资料目前在探空数据产品反演和资料同化中发挥了更加显著的作用。NOAA利用专用传感器微波成像仪已有算法生成了专用传感器微波成像仪/探测仪成像仪产品。此外,一些新开发的算法可以从专用传感器微波成像仪/探测仪资料中提取出云和降水的信息。在云冰云水的反演算法中,亮温是与云冰云水路径和粒子的平均直径相关的。利用一维变分反演系统,同时反演出了多数大气和地表条件下的大气温度、湿度以及水凝物的垂直廓线。在各种天气形势下,由专用传感器微波成像仪/探测仪资料反演得到的温度和湿度廓线的均方根误差通常分别小于2K和15%。为了同化专用传感器微波成像仪/探测仪资料,还发展了新的质量控制和偏差订正方法。在NOAA的全球预报系统中同化了专用传感器微波成像仪/探测仪资料后,对提高全球中期数值预报水平产生了中性和较小的正效果。Weng F Zou X Yan B Han Y Liu Q 2011气象科技进展2011,1,1:2
13Engrafted bone marrow-derived flk-(1+) mesenchymal stem cells regenerate skin tissue显示文摘Deng W Han Q Liao L Li C Ge W Zhao Z You S Deng H Murad F Zhao RC 2006中国生物学文摘2006,20,5:2
14Insights into human CD34(+) hematopoietic stem/progenitor cells through a systematically proteomic survey coupled with transcriptome显示文摘Liu F Lu J Fan HH Wang ZQ Cui SJ Zhang GA Chi M Zhang X Yang PY Chen Z Han ZG 2006中国生物学文摘2006,20,5:2
15Investigation of PEG adsorption on the surface of zinc oxide nanoparticles 显示文摘Liu F Sheng C Han N X 2004Power Technology2004,145,1:1
16New family of gemini surfactants with glucosamide-based trisiloxane 显示文摘Han F Zhang G 2004Colloids and Surfaces A: Physicochemical and Engineering Aspects2004,237,13:1
17Nestin-positive mesenchymal stem cells favour the astroglial lineage in neural progenitors and stem cells by releasing active BMP4显示文摘 Bruyère F Hans G 2004BMC Neurosci2004,5,:1
18HLA 2DRB and 2DQB alle contribution to narcolep sy suscep tibility in Chinese patients with narcolep sy显示文摘Han F Chene Z Weih L 2003Natl Med J Chinam2003,83,:1
19A numerical study on the axial crushing response of hybrid puhruded and 45 braided tubes 显示文摘Han H Taheri F Pegg N 2007Composite Structures2007,80,:1
20Effect of supplemental synthetic anaino acids to the low diels on the perfnrmanee of growing pigs显示文摘Jin C F Kim I H Han I K 1998Asian Australas J Anita Sci1998,11,1:1
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