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| 1 | Breast magnetic resonance imaging in patients with occult breast carcinoma: evaluation on feasibility and correlation with histopathological findings显示文摘是的背景一个不平常的演讲,秘密主要乳癌在临床的实践仍然是诊断、治疗学的挑战。这研究试图回顾地估计胸的可行性在有恶意的腋的 lymphadenopathy 和未知主要恶意的病人的磁性的回声成像(MRI ) ,和与有秘密的胸癌的 35 个女人全部的组织病理学说的 characteristics.Methods A 的关联与动态提高对比的胸 MRI 被评估。完全使连续节在所有情况中被使用。MRI 性能被估计并且与 35 个病人中的 21 个被发现组织学地有主要的胸癌的组织病理学说的 findings.Results 相关。21 个病人中的二十个有反常先生调查结果, 1 个病人让正常 MRI 学习。留下 14 个病人, 10 在 MRI 和外科上是否定的。MRI 和没有相应肿瘤上的四有的可疑改进被发现。在 45% 的改进在 55% 被发现的有质量的损害(11/20 ) 和 ductual 和部分改进。主要肿瘤的平均直径是 15 公里。侵略 ductal 癌在 81% 被发现(17/21 ) 。17 侵略 ductual 癌之一太小,不能被分级。留下中的十四个 16 作为等级 II 被分类并且 2 是等级我。35 个病人中的 32 个收到了雌激素受体,孕酮受体和人表皮的生长因素受体 2 考试并且 32 中的 12 个是有小尺寸的三元组否定的胸 carcinoma.Conclusions 团损害,有 ductal 或片断改进的损害是在有秘密乳癌的病人的普通 MRI 特征。主要肿瘤的主导的类型是有中等组织病理学说的等级的侵略 ductal 癌。三元组否定的胸癌的率可能在秘密乳癌是更高的。 | LU Hong XU Yi-lin ZHANG Shu-ping LANG Rong-gang Chi S. Zee LIU Pei-fang FU Li | 2011 | Chinese Medical Journal2011,,12: | 31 |
| 2 | Conventional processes and membrane technology for carbon dioxide removal from natural gas:A review显示文摘Membrane technology is becoming more important for CO 2 separation from natural gas in the new era due to its process simplicity,relative ease of operation and control,compact,and easy to scale up as compared with conventional processes.Conventional processes such as absorption and adsorption for CO 2 separation from natural gas are generally more energy demanding and costly for both operation and maintenance.Polymeric membranes are the current commercial membranes used for CO 2 separation from natural gas.However,polymeric membranes possess drawbacks such as low permeability and selectivity,plasticization at high temperatures,as well as insufficient thermal and chemical stability.The shortcomings of commercial polymeric membranes have motivated researchers to opt for other alternatives,especially inorganic membranes due to their higher thermal stability,good chemical resistance to solvents,high mechanical strength and long lifetime.Surface modifications can be utilized in inorganic membranes to further enhance the selectivity,permeability or catalytic activities of the membrane.This paper is to provide a comprehensive review on gas separation,comparing membrane technology with other conventional methods of recovering CO 2 from natural gas,challenges of current commercial polymeric membranes and inorganic membranes for CO 2 removal and membrane surface modification for improved selectivity. | Zee Ying Yeo Thiam Leng Chew Abdul Rahman Mohamed Siang-Piao Chai | 2012 | Journal of Natural Gas Chemistry2012,21,3: | 17 |
| 3 | Global secretome analysis identifies novel mediators of bone metastasis显示文摘骨头是稳固的肿瘤的远转移的一个最普通的地点。分泌蛋白质被知道影响在变形癌症房间和骨头基质之间的病理学的相互作用。为了包括地介绍,分泌了与骨头转移联系的蛋白质,我们使用了量、非量的集体 spectrometry 全球性分析改变从多重种类和癌症的变形能力打的骨头的九根细胞线的 secretomes。由比较父母房间和他们的骨头的 secretomes 变形衍生物,我们识别了特别地在这些房间线与骨头转移被联系的分泌蛋白质。我们然后合并了大临床的转移数据集的生物信息的分析获得强烈与临床、试验性的骨头转移被联系的几个功能的班的候选人小说骨头转移蛋白质的一张表。选择蛋白质的功能的确认显示在 vivo,骨头转移能被高表示支持(1 ) 唾液的 cystatins CST1, CST2,和 CST4;(2 ) plasminogen 使活跃之物小块地和 PLAU;或(3 ) 骨胶原功能蛋白质 PLOD2 和 COL6A1。总的来说,我们的学习揭开了骨头转移并且因此的几个新分泌调停人证明 secretome 分析是为新奇 biomarkers 和候选人的鉴定的一个强大的方法治疗学的目标。 | Maria Andres Blanco Gary LeRoy Zia Khan Ma a Ale kovi Barry M Zee Benjamin A Garcia Yibin Kang | 2012 | Cell Research2012,22,9: | 12 |
| 4 | A truncated hepatitis E virus ORF2 protein expressed in tobacco plastids is immunogenic in mice显示文摘瞄准:表示 23-ku pE2 到花费有效地,肝炎 E 病毒(HEV ) 的 3'-portion 包括的 E2 碎片编码的最有希望的子单元疫苗打开读物框架 2 (ORF2 ) 在烟草的质体(Nicotiana 烟 cv。SR1 ) ,在质体调查 transgene 表示和 pE2 累积,并且评估反在老鼠的导出质体的 pE2 的遗传因子的效果。方法:包含米饭 psbA 倡导者驾驶的 E2 碎片的指向质体的向量 pRB94-E2 被构造。在进烟草质体的交货之上,这构造能在质体染色体在 psaB-trnfM 和 trnG-psbC 碎片开始相应再结合,并且导致在二碎片之间插入的 transgene。pRB94-E2 与一个 biolistic 粒子轰炸方法被交付,并且转变质体的工厂被获得在补充 spectinomycin 的媒介上跟随炮轰的叶纸巾的新生。改革工厂的 Transplastomic 地位被 PCR 和南部的污点分析证实, transgene 表示被北污点分析调查,并且 pE2 的累积被 ELISA 测量。而且,蛋白浸出物被用来使老鼠免疫,并且在使免疫的老鼠的浆液样品的 pE2 反应的抗体的存在被 ELISA 学习。结果:PCR 和南部的污点分析证实的 Transplastomic 线能活跃地抄录 E2 mRNA。pE2 多肽象 13.27 microg/g 一样高被积累到水平新鲜叶子。pE2 能刺激使免疫的老鼠产生 pE2 特定的抗体。结论:HEV-E2 碎片能被插入到质体染色体,导出的 recombinant pE2 抗原是在老鼠遗传因子的反。因此,质体可以是为 HEV 疫苗的划算的生产的新奇来源。 | Yuan-Xiang Zhou Maggie Yuk-Ting Lee James Ming-Him Ng Mee-Len Chye Wing-Kin Yip Sze-Yong Zee Eric Lam | 2006 | World Journal of Gastroenterology2006,12,2: | 10 |
| 5 | 血管源性脑白质病变与眼底血管网络几何学参数的相关性分析显示文摘目的利用计算机辅助的全自动眼底照相分析技术,研究血管源性脑白质病变严重程度与眼底血管网络参数的相关性。方法纳入2015年3—10月于中山大学附属第一医院神经科住院的能完成颅脑MR和坐位眼底照相的脑小血管病患者106例.分别对其颅脑MR显示的脑室旁脑白质病变及深部脑白质病变程度进行Fazekas评分,按照评分将患者分别分为轻度及中重度病变组:比较不同部位不同病变程度患者的基线临床资料和眼底血管网络参数。结果依照脑室旁脑白质病变严重程度分组分析,校正基线信息后行Logistic回归分析显示.脑小动脉不对称性指数(OR=1.71,95%CI 1.02-2.88.P<0.05)的减小与中重度脑室旁脑白质病变风险增加有关。依照深部脑白质病变严重程度分析,校正基线信息后行Logistic冋归分析显示,视网膜中央动脉直径等效值(OR=5.19,95%CI 1.06-25.44,P<0.05)、脑小动脉不对称指数(OR=2.96,95%CI 1.42-6.17,P<0.05)、脑小静脉不对称指数(OR=2.99,95%CI 1.48-6.02,P<0.05)的减小和视网膜中央静脉直径等效值(OR=0.14,95%CI 0.03-0.67,P<0.05)的增加与中重度深部脑白质病变风险增加有关。结论不同部位的脑白质病变发病机制可能存在不同,故二者的早期诊断和观察随访适用于不同的眼底血管网络几何学参数。 | 姬晓昙 蔡颖 邱宝山 Benny Zee Jack Lee 蓝琳芳 范玉华 | 2019 | 中华医学杂志2019,99,9: | 9 |
| 6 | 复发-缓解型多发性硬化边缘系统白质纤维束定量DTI改变显示文摘目的探讨复发一缓解型多发性硬化(relapsing remitting multiples clerosis,RRMS)患者边缘系统白质纤维束定量弥散张量的改变。方法RRMS患者24例,年龄和性别相匹配的健康志愿者24例为对照进行MRI扫描,获取常规MRI图像和弥散张量成像(DTI)图像,经GE工作站处理后进行测量分析,比较2组边缘系统主要纤维束(扣带束、穹窿束和终纹束)不同部分各向异性指数(FA)值和平均弥散系数(MD)值的变化。结果在考虑年龄和性别因素的影响后,RRMS组患者穹窿柬(F一15.605,P=0.000135)、右侧穹窿/终纹束(F=15.772,P=0.000127)、左侧穹窿/终纹束(F=8.53,P=0.004)的FA值较健康对照组明显降低;RRMS组患者穹窿束(F=13.28,P=0.0004)、右侧终纹束(F=10.943,p=0.002)、右侧穹窿/终纹束(F=7.326,P=0.008)的MD值较健康对照组明显增高;RRMS组患者左/右侧的前、后扣带束、右侧终纹束(F=0.986,P=0.326)、左侧终纹束的FA和对照组比较无明显差异,RRMS组患者左/右侧的前、后扣带束、左侧终纹束、左侧穹窿/终纹束的MD值较健康对照比较差异均无统计学意义。结论DTI可作为反映RRMS边缘系统纤维束病理性改变的较敏感的检测方法。 | 周福庆 Chi-- Shing Zee 龚洪翰 Mark Shiroishi | 2010 | 实用放射学杂志2010,26,3: | 7 |
| 7 | Single-molecule surface-enhanced Raman scattering: Current status and future perspective显示文摘散布的单个分子的提高表面的拉曼(smSERS ) 广泛地在 1997 在起始的观察以后被学习了,还仍然在那里存在在 smSERS 的基本机制的未解决的问题。在这评论,我们在 smSERS 和它的申请的机制调查一些最近的突破。 | Zee Hwan Kim | 2014 | Frontiers of physics2014,9,1: | 6 |
| 8 | 脑小血管病与眼底血管网络参数的相关性研究显示文摘目的利用计算机辅助的全自动眼底照相分析技术,研究脑小血管病与眼底血管网络参数的相关性。方法连续性纳入能坐位行眼底照相的脑小血管病患者80例,大动脉粥样硬化性脑梗死患者41例,比较两组患者的一般临床资料和眼底血管网络参数。同时行logistic回归分析脑小血管病患者的危险因素。结果脑小血管病组在男性比例、吸烟史发生率、血尿酸水平方面均低于大动脉粥样硬化性脑梗死组[(55%vs.75.6%);(20%vs.39%);(308.33±85.30 vs.367.79±113.60)],差异均有统计学意义(P<0.05)。脑小血管病组小静脉分支系数和不对称性指数均小于大动脉粥样硬化性脑梗死组,[(1.37±0.04 vs.1.39±0.05);(0.80±0.02 vs.0.81±0.02)],差异均有统计学意义(P<0.05)。Logistic回归分析显示,调整血管危险因素后,减小的小静脉不对称性指数与脑小血管病相关,是其危险因素(OR值=1.16,95%CI:1.05-1.38,P<0.05)。结论减小的小静脉不对称性指数与脑小血管病相关,是其危险因素,可作为其早期诊断指标。 | 姬晓昙 Benny Zee Jack Lee 林晶 王迪龙 范玉华 | 2016 | 中国神经精神疾病杂志2016,42,2: | 6 |
| 9 | Cinnamon extract suppresses experimental colitis through modulation of antigen-presenting cells显示文摘AIM:To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.METHODS:Cinnamon extract was used to treat murine macrophage cell line(Raw 264.7),mouse primary antigen-presenting cells(APCs,MHCII+) and CD11c+dendritic cells to analyze the effects of cinnamon extract on APC function.The mechanisms of action of cinnamon extract on APCs were investigated by analyzing cytokine production,and expression of MHC antigens and co-stimulatory molecules by quantitative real-time PCR and flow cytometry.In addition,the effect of cinnamon extract on antigen presentation capacity and APC-dependent T-cell differentiation were analyzed by [H3]-thymidine incorporation and cytokine analysis,respectively.To confirm the anti-inflammatory effects of cinnamon extract in vivo,cinnamon or PBS was orally administered to mice for 20 d followed by induction of experimental colitis with 2,4,6 trinitrobenzenesulfonic acid.The protective effects of cinnamon extract against experimental colitis were measured by checking clinical symptoms,histological analysis and cytokine expression prof iles in inflamed tissue.RESULTS:Treatment with cinnamon extract inhibited maturation of MHCII+ APCs or CD11c+ dendritic cells(DCs) by suppressing expression of co-stimulatory molecules(B7.1,B7.2,ICOS-L),MHCII and cyclooxygenase(COX)-2.Cinnamon extract induced regulatory DCs(rDCs) that produce low levels of pro-inflammatory cytokines [interleukin(IL)-1β,IL-6,IL-12,interferon(IFN)-γ and tumor necrosis factor(TNF)-α] while expressing high levels of immunoregulatory cytokines(IL-10 and transforming growth factor-β).In addition,rDCs generated by cinnamon extract inhibited APC-dependent T-cell proliferation,and converted CD4+ T cells into IL-10high CD4+ T cells.Furthermore,oral administration of cinnamon extract inhibited development and progression of intestinal colitis by inhibiting expression of COX-2 and pro-inflammatory cytokines(IL-1β,IFN-γ and TNF-α),while enhancing IL-10 levels.CONCLUSION:Our study suggests the potential of cinnamon extract as an anti-inflammatory agent by targeting the generation of regulatory APCs and IL-10+ regulatory T cells. | Ho-Keun Kwon Ji-Sun Hwang Choong-Gu Lee Jae-Seon So Anupama Sahoo Chang-Rok Im Won Kyung Jeon Byoung Seob Ko Sung Haeng Lee Zee Yong Park Sin-Hyeog Im | 2011 | World Journal of Gastroenterology2011,17,8: | 6 |
| 10 | ntraoperative ultrasound assistance in the resection of small, leep-seated, or ill-defined intracerebral lesions显示文摘背景 Intraoperative 超声( IOUS )逐渐地在 neurosurgical procedures.In 期间被用作一个指导工具这研究,我们试图评估 intraoperative 超声的潜在的应用程序在小、深层,或不清楚的 lesions.Methods 的切除术的帮助外科 86 个连续病人与小,深层,或不清楚 intracerebral 损害是学习 prospectively.An 改进 intraoperative | WANG Yi-da WANG Yi MAO Ying WANG Yong ZEE Chi-Shing | 2011 | Chinese Medical Journal2011,,20: | 5 |
| 11 | 多发性硬化早期胼胝体的DTI改变显示文摘目的:探讨多发性硬化(MS)早期常规MR扫描表现正常的胼胝体的磁共振弥散张量成像(DTI)的改变。方法:20例病程相对较短(平均2.3年)的MS患者和20个年龄性别相匹配的健康志愿者为对照进行MR扫描,获取高分辨常规MRI(T1WI、T2WI、FLAIR)图像及DTI图像,获得表现正常胼胝体(NACC)和额、枕部表现正常白质(NAWM)的部分各向异性指数(FA)值和平均扩散系数(MD)值。结果:早期MS患者的NACC与正常对照比较,其FA值显著下降(P<0.001)、MD值显著增加(P<0.001);早期MS患者额、枕部的NAWM和正常对照比较,其FA值(P=0.216)、MD值(P=0.673)差异均无统计学意义。NACC的平均MD值和反映脑实质中央性萎缩的Evans指数间存在相关性(r=0.648,P=0.043)。结论:定量磁共振弥散张量值(FA值和MD值)的变化表明MS疾病早期损害优先出现在胼胝体,胼胝体的结构特点可能是其在MS早期易受损害的重要原因。定量DTI可用于监控和评估早期MS患者NACC的改变和预后。 | 周福庆 Chi-Shing Zee 龚洪翰 谭令 Mark Shiroishi | 2010 | 中国临床医学影像杂志2010,21,4: | 5 |
| 12 | 复发-缓解型多发性硬化患者表现正常胼胝体经Hofer's新方案分区的各向异性定量研究显示文摘目的 研究在复发-缓解型多发性硬化(RRMS)中通过Hofer's 新分区方案的表现正常胼胝体部分各向异性(FA)值的定量改变.方法 采集35例临床确诊的RRMS患者和35例年龄、性别匹配的健康对照定量弥散张量成像(DTI)数据.比较RRMS患者和对照组胼胝体Hofer's新分区方案不同区域的FA值改变及其与脑实质分数(brain parenchymal fraction, BPF)、T2病灶容积之间的关系.结果 在健康志愿者中,Hofer's新分区方案FA值组内比较差异具有统计学意义(P<0.001),FA(区Ⅴ)>FA(区Ⅰ)>FA(区Ⅳ)>FA(区Ⅱ)>FA(区Ⅲ) 在RRMS患者中同样观察到这些区域的FA值具有不均一性:FA(区Ⅴ)>FA(区Ⅰ)>FA(区Ⅱ)>FA(区Ⅲ)>FA(区Ⅳ) RRMS患者区Ⅱ(F=4.159,P=0.046)、区Ⅲ(F=9.257,P=0.004)、区Ⅳ(F=12.234,P=0.001)的FA值较健康对照组明显降低 胼胝体的区Ⅴ的FA值同样出现降低趋势,但无统计学意义(P=0.179) 胼胝体的区Ⅰ的FA值未见明显改变(P=0.787).在Hofer's新分区方案中,胼胝体组内FA值和BPF之间(P值范围:0.086~0.969)、FA值和T2病灶容积之间(P值范围:0.127~0.658) 均无相关性.结论 RRMS患者的表现正常胼胝体 (区Ⅱ、区Ⅲ、区Ⅳ) 存在微观病理改变,这些改变可能和胼胝体原发性缺血、局部微病灶等因素有关.Hofer's新分区方案的DTI分析有助于更好地理解RRMS临床变化. | 周福庆 Chi-Shine Zee 龚洪翰 周科峰 张兴伟 姜建 刘润 曾献军 | 2010 | 实用放射学杂志2010,26,6: | 4 |
| 13 | Endosperm Development in Autotetraploid Rice显示文摘By using the laser scanning confocal microscope and plastic (Leica 7022 historesin embedding kit) semi-thin sectioningtechnique, comparative studies on the development of endosperm were carried out between autotetraploid and diploid rices. Aboutone third of the ovaries in the autotetraploid showed normal endosperm development as those in the diploid. In these ovaries, one ofthe polar nuclei would fuse with the sperm nucleus, and the primary endosperm nucleus formed and underwent the first division in 4hours after pollination; the anticlinal wall began to grow centripetally between the free nuclei starting from the wall ingrowths of theembryo sac near the micropylar end, and some of the phragmoplasts formed transformed into periclinal walls. In addition, some of thecell wall situated in the middle of the endosperm appeared to originate from phragmoplasts, whereas others seemed to developrandomly without the obvious formation of phragmoplasts. Cellulose began to accumulate in the wall of aleurone cell layer at 6 daysafter pollination. The cellulose wall of the cells of the aleurone cell layer appeared to have completely formed within 7 to 8 days afterpollination. On the other hand, about two thirds of the ovaries in the autotetraploid showed abnormality in endosperm developmentwith various types, such as non-fertilization, abnormal fertilization, endosperm development-delay and non-synchronization in thedevelopment of cellulose wall of cells of the aleurone layer. These abnormalities usually resulted in decreased seed setting inautotetraploid rice. | WANG Lan LIU Xiang-dong LU Yong-gen FENG Jiu-huan Xu Xue-bin Xu Shi-xiong (S. Y. Zee) | 2005 | Rice science2005,12,2: | 4 |
| 14 | Risk factors and natural history of breast cancer in younger Chinese women显示文摘AIM: To investigate the age differences in the risk factors, clinicopathological characteristics and patterns of treatment of female breast cancer patients. METHODS: Seven thousand one hundred and fiftytwo women with primary breast cancer from the Hong Kong Breast Cancer Registry were recruited after receiving patients' consent, they were asked to complete standardized questionnaires which captured their sociodemographic characteristics and risk factors associated with breast cancer development. Among them, clinicopathological data and patterns of treatment were further collected from medical records of 5523 patients with invasive breast cancers. Patients were divided into two groups according to the age at diagnosis: younger(< 40 years old) vs older patients(≥ 40 years old) for subsequent analyses.RESULTS: Analysis on the sociodemographic characteristics and exposure to risk factors were performed on 7152 women with primary breast cancer and the results revealed that younger patients were more likely to have unhealthy lifestyles; these include a lack of exercise(85.4% vs 73.2%, P < 0.001), having high stress in life(46.1% vs 35.5%, P < 0.001), having dairy/meat-rich diets(20.2% vs 12.9%, P < 0.001),having alcohol drinking habit(7.7% vs 5.2%, P = 0.002). Younger patients were also more likely to have hormone-related risk factors including nulliparity(43.3% vs 17.8%, P < 0.001) and an early age at menarche(20.7% vs 13.2%, P < 0.001). Analyses on clinicopathological characteristics and patterns of treatment were performed on 5523 women diagnosed with invasive breast cancer. The invasive tumours in younger patients showed more aggressive pathological features such as having a higher percentage of grade 3 histology(45.7% vs 36.5%, P < 0.001), having a higher proportion of tumours with lymphovascular invasion(39.6% vs 33.2%, P = 0.003), and having multifocal disease(15.7% vs 10.3%, P < 0.001); they received different patterns of treatment than their older counterparts.CONCLUSION: Younger patients in Hong Kong are more likely to encounter risk factors associated with breast cancer development and have more aggressive tumours than their older counterparts. | Winnie Yeo Hang-Mei Lee Amy Chan Emily YY Chan Miranda CM Chan Keeng-Wai Chan Sharon WW Chan Foon-Yiu Cheung Polly SY Cheung Peter HK Choi Josette SY Chor William WL Foo Wing-Hong Kwan Stephen CK Law Lawrence PK Li Janice WH Tsang Yuk Tung Lorna LS Wong Ting-Ting Wong Chun-Chung Yau Tsz-Kok Yau Benny CY Zee | 2014 | World Journal of Clinical Oncology2014,5,5: | 4 |
| 15 | 社区卫生服务守门人好不好——欧洲18个国家病人满意度与转诊制度的关系显示文摘目的探讨守门人制度与人群对全科医生服务满意度的关系。方法研究涉及了18个国家,包括欧盟成员国及挪威、冰岛和瑞士。本研究有两个数据来源:(1)请各国专家选择17种不同类型的卫生服务,然后计算各种服务的“直接可及性”,即病人可以自由选择的服务占总服务的比例;(2)采用EUROPEP工具,测量病人对全科医生服务的满意度,该测量涉及了14个欧洲国家。结果直接获得卫生服务越多的国家的病人对全科医生服务的满意度越高于需要转诊的国家(r=0.54,P=0.05)。对全科医学服务组织方面(即服务的安排,主要考虑到等待时间和预约可能)的满意度与服务“直接可及性”呈正相关(r=0.67,P=0.01)。对医患沟通的满意度以及对医学服务技术的满意度与“直接可及性”无关(r=0.46、0.41,P>0.05)。结论病人认为“直接可及性”是很重要的。如果病人可以自由地选择卫生服务提供者的类型,那么就会给全科医生服务更积极的评价。不过这种满意主要表现在全科医学服务的组织方面。是否能直接可及各种服务并不影响病人对全科医生服务质量的评价。 | 杨辉 Madelon W.Kroneman Hans Maarse Jouke Vander Zee | 2007 | 中国全科医学2007,10,1: | 4 |
| 16 | Correlation and prognostic significance of beta-galactoside alpha-2,6-sialyltransferase and serum monosialylated alpha-fetoprotein in hepatocellular carcinoma显示文摘AIM: To investigate the correlation between tissue ST6Gal I and serum msAFP in HCC patients, and to investigate their prognostic significance.METHODS: Preoperative sera,paired tumorous and non-tumorous tissues were collected from 19 consecutive patients who had undergone surgical resection of HCC.ST6Gal T activities in the tissues were measured by an in vitro microsomal enzyme activity assay. The percentages of tumor-specific msAFP in the sera were also estimated by an isoelectric focusing-immunoblotting assay.RESULTS: The tumor ST6Gal I activity was negatively correlated with serum msAFP percentage (r = -0.53,P = 0.019). Both decreased tumor ST6Gal I activity andincreased serum msAFP percentage were associatedwith poor tumor cell differentiation. Univariate analyses showed that both decreased tumor ST6Gal T activity (P = 0.028), increased serum msAFP percentage (P = 0.034) and poor tumor cell differentiation (P = 0.031)were associated with shorter overall survival. Multivariate analysis using the Cox regression model showed that the preoperative serum msAFP percentage (P = 0.022)and tumor cell differentiation status (P = 0.048) were independent prognostic indicators for patient overall survival.CONCLUSION: Our results indicate that the presence of msAFP in blood circulation is associated with a decreased activity of ST6Gal I activity in HCC. Both tissue ST6Gal I and serum msAFP are potential prognostic markers for patients with operable HCC. | Terence CW Poon Clarissa HS Chiu Paul BS Lai Tony SK Mok Benny Zee Anthony TC Chan Joseph JY Sung Philip J Johnson | 2005 | World Journal of Gastroenterology2005,11,42: | 4 |
| 17 | 磁共振弥散张量成像定量分析复发-缓解型多发性硬化患者表现正常的脑干白质纤维束显示文摘目的应用磁共振弥散张量成像(DTI)定量分析复发-缓解型多发性硬化(RRMS)患者表现正常的脑干白质纤维束的改变。方法对50例RRMS患者(RRMS组)及25名年龄和性别相匹配的健康志愿者(对照组)行磁共振扫描,获取常规MR图像和DTI图像。比较两组脑干主要纤维束(皮质脊髓束/皮质脑桥束、小脑上、中、下脚纤维束和内侧丘系纤维束)的部分各向异性分数(FA)和平均弥散系数(MD)的变化。结果排除年龄、性别等因素影响后,经ANCOVA协方差分析,RRMS组患者皮质脊髓束/皮质脑桥束(L:P=0.030;R:P=0.020)、小脑下脚(L:P=0.030;R:P=0.037)、小脑上脚(L:P=0.036;R:P=0.041)、内侧丘系(L:P=0.014;R:P=0.035)的FA值较对照组明显降低。RRMS组患者皮质脊髓束/皮质脑桥束(L:P=0.004;R:P=0.046)、小脑下脚(L:P=0.047;R:P=0.011)、小脑上脚(L:P=0.021;R:P=0.011)、内侧丘系(L:P=0.002;R:P=0.044)的MD值较对照组明显增高。小脑中脚的MD值及FA值两组间差异均无统计学意义(P>0.05)。RRMS患者表现正常脑干白质纤维束的MD值及FA值与脑实质分数(BPF)、T2病灶容积之间均无相关性。结论RRMS患者表现正常脑干白质纤维束DTI的异常发现,提示上述纤维束存在微观病变,推测病变可能是局部隐匿性病灶导致的髓鞘脱失、轴突破坏。 | 周福庆 ZEE Chi-Shing 龚洪翰 张兴伟 SHIROISHI Mark | 2010 | 中国医学影像技术2010,26,3: | 3 |
| 18 | Emerging pollutants in the environment:A challenge for water resource management显示文摘A significant number of emerging pollutants(EPs)resulting from point and diffuse pollution is present in the aquatic environment.These are chemicals that are not commonly monitored but have the potential to enter the environment and cause adverse ecological and human health effects.According to the NORMAN network,at least 700 substances categorized into 20 classes,have been identified in the European aquatic environment.In light of their potential impact action is urgently required.In this study,we present a concept that shows the current state of art and challenges for monitoring programs,fate and risk assessment tools and requirements for policies with respect to emerging pollutants as a base for sustainable water resource management.Currently,methods for sampling and analysis are not harmonized,being typically focused on certain EP classes.For a number of known highly hazardous EPs detection limits are too high to allow proper risk assessment.For other EPs such as microplastics method development is in its infancy.Advanced ultra-sensitive instrumental techniques should be used for quantitative determination of prioritized EPs in water,suspended matter,soil and biota.Data on EPs'and their metabolites'properties that determine their fate in the environment are often not available.National surveys on water quality often use different parameters for water quality assessment and often do not include EPs.A harmonized monitoring of surface and groundwater is not yet achieved and urgently required.Specific component integrated into models assessing the fate of EPs in a multi compartment environmental approach are missing and must be developed.The main goal of risk assessment is the overall protection of ecological communities in the aquatic environment and human health.New methods for assessing the cumulative risks from combined exposures to several stressors,including mixtures of EPs in a multi-scale approach are required.A combination of regulations and management measures with respect to use/emissions of EPs into the environment,as well as to their occurrence in the environment are fundamental to reach an efficient water resource management. | Violette Geissen Hans Mol Erwin Klumpp Günter Umlauf Marti Nadal Martine van der Ploeg Sjoerd E.A.T.M.van de Zee Coen J.Ritsema | 2015 | International Soil and Water Conservation Research2015,3,1: | 3 |
| 19 | 功能磁共振成像在多发性硬化中的应用进展(英文)显示文摘多发性硬化(MS)的一个重要的临床表现是认知障碍。有越来越多的证据显示,认知障碍的程度不仅与组织损坏程度有关,还同MS患者组织受损、组织修复及大脑皮层重组等因素间复杂的制约平衡关系密切相关。神经可塑性能够在大脑中散乱分布多个病灶的情况下使得大脑维持正常运行,而功能磁共振成像(fMRI)及静息态fMRI能够为我们提供有关神经可塑性程度及性质的信息。MS患者除了临床表型之外,在对他们的视觉、认知及运动系统进行研究的过程中,还发现其大脑执行某项任务的区域发生了改变,或者使用了正常人脑在执行该任务时不会使用的区域。这些功能性改变与传统MRI中T2像可见病灶内及其周边的脑损伤范围及其严重程度,以及中枢神经系统(CNS)某些结构,包括脊髓及视神经的参与有关。脑功能异常不仅在急性复发之后,而且在病情稳定期也在随时间而不断变化。本文对任务fMRI及静息态fMRI在MS诊疗中的作用,fMRI技术的研究成果及其临床应用现状进行了总结,并对其未来发展方向进行展望。 | 周福庆 Chi-Shing Zee | 2011 | 磁共振成像2011,2,4: | 3 |
| 20 | Thoracic epidural angiolipoma: A case report and review of the literature显示文摘Angiolipoma of the spine is a benign neoplasm consisting of both mature fatty tissue and abnormal vascular elements, and usually presents with a slow progressive clinical course. Our patient presented with bilateral lower extremity weakness and chest-back numbness. Physical examination revealed adipose elements superficial hypesthesia below the T5 level and analgesia below the T6 level. Magnetic resonance imaging (MRI) scan showed an avidly and heterogeneously enhancing mass which was located in the posterior epidural space. Compression of the thoracic cord by the fusiform mass was seen between T3-T4. During the operation, a flesh pink vascular mass (4.7 cm × 1.0 cm × 1.0 cm) with obscure margin and strong but pliable texture was found in the posterior epidural space extending from T3 to T4. There was no infiltration of the dura or the adjacent bony spine. Histopathological study of the surgical specimen showed a typical angiolipoma. We review the previously documented cases of spinal extradural angiolipomas performed with MRI. | Jun Meng Yong Du Han-Feng Yang Fu-Bi Hu Ya-Yong Huang Bing Li Chi-Shing Zee | 2013 | World Journal of Radiology2013,5,4: | 3 |