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| 1 | Hydrogen sutfide protects colon cancer cells from chemopreventative agent β-phenylethyl isothiocvanate induced apoptosis显示文摘AIM: Hydrogen sulfide (H2S) is a prominent gaseous constituent of the gastrointestinal (GI) tract with known cytotoxic properties. Endogenous concentrations of H2S are reported to range between 0.2-3.4 mmol/L in the GI tract of mice and humans. Considering such high levels we speculate that, at non-toxic concentrations, H2S may interact with chemical agents and alter the response of colonic epithelium cells to such compounds. The GI tract is a major site for the absorption of phytochemical constituents such as isothiocyanates, flavonoids, and carotenoids, with each group having a role in the prevention of human diseases such as colon cancer. The chemopreventative properties of the phytochemical agent β-phenyethyl isothiocyanate (PEITC) are well recognized. However, little is currently known about the physiological or biochemical factors present in the GI tract that may influence the biological properties of ITCs. The current study was undertaken to determine the effects of H2S on PEITC mediated apoptosis in colon cancer cells.METHODS: Induction of apoptosis by PEITC in human colon cancer HCT116 cells was assessed using classic apoptotic markers namely SubG1 population analysis,caspase-3 like activity and nuclear fragmentation and condensation coupled with the MTT (3-(4,5-dimethylthiazol2-yl)-2,5-diphenyl tetrasodium bromide) viability assay and LDH leakage.RESULTS: PEITC significantly induced apoptosis in HGT116cells as assessed by SubG1 population formation, nuclear condensation, LDH leakage and caspase-3 activity after 24 h, these data being significant from control groups (P<0.01). In contrast, co-treatment of cells with physiological concentrations of H2S (0.1-1 mmol/L) prevented PEITC mediated apoptosis as assessed using the parameters described.CONCLUSION: PEITC effectively induced cell death in the human adenocarcinoma cell line HCT116 in vitro through classic apoptotic mechanisms. However, in the presence of H2S, apoptosis was abolished. These data suggest that H2S may play a significant role in the response of colonic epithelial cells to beneficial as well as toxic agents present within the GI tract. | Peter Rose Philip K Moore Shen Han Ming Ong Choon Nam Jeffrey S Armstrong Matt Whiteman | 2005 | World Journal of Gastroenterology2005，11，26： | 13 |
| 2 | 中国社区卫生服务该怎样满足患者需求:一项全国性的代表性调查显示文摘目的中国自2009年起开展社区卫生服务,截至2014年已建成社区卫生服务中心8 669家,拥有社区卫生服务工作者30万人。然而,至社区卫生服务中心就诊的患者数并不多,因为人们对全科医生缺乏信任,但对专科医生过度依赖。方法于2015年9—12月,采用分层随机抽样法,按社区卫生服务中心在城市和郊区的分布比例(2∶1)在中国东、中、西部地区抽取样本社区卫生服务中心,并采用不同问卷对在其工作的资深临床医生和全科医生进行调查。两套问卷内容均涉及所在社区卫生服务中心的服务人口特征、开办的临床和健康教育活动情况。158例资深临床医生和3 580例全科医生对调查进行了有效应答,问卷有效应答率分别为84%和86%。结果社区卫生服务中心的中位医生数为8例、中位护士数为13例,但仅半数医生注册为全科医生,极少数护士接受过专业的全科培训。98%的社区卫生服务中心配有听诊器,97%配有血压计,但仅43%配有检眼镜,64%配有妇科检查仪器。社区卫生服务中心倾向于有选择地向部分慢性病患者提供医疗服务。全科医生每天接诊的中位患者数为12.5例。多因素分析结果显示,在举办主体为私立医院的社区卫生服务中心、配有药剂师和护士的社区卫生服务中心,全科医生的每日接诊患者数较多。结论中国拥有规模较大的、以年轻人为主的全科医疗服务团队,并配有持续性专业培训;社区卫生服务中心配有基础医疗设备,但仅少数可为患者提供多种常见病的综合性医疗服务;社区卫生服务中心就诊患者数仍较少。 | WONG W C W JIANG S ONG J J 本刊编辑部 | 2017 | 中国全科医学2017，20，19： | 6 |
| 3 | Interoperability of Design Intent in Integrated Product and Process Design显示文摘Concurrent engineering is currently an overwhelming t rend in product development since it takes the down-stream product development issues and product life-cycle issues into consideration in up-front design pro cess. At this stage, evaluation, verification and validation of design concepts and design schemes is critical to the right-to-market product development. I dentification and extraction of design intent from the part digital mock-ups in different data formats and created in different CAD systems for DFX considerati on, evaluation, verification, and validation is crucial too. Traditionally, fro m manufacturing point of view, feature identification and extraction is to get t he features and feature-related information for manufacturing planning and inte gration. Presently, from the viewpoint of product development and product servi ce life cycle, design intent identification and extraction is to get all the des ign-related information for DFX consideration in early design stage, such as de sign for assembly, design for service, design for tooling, design for functional ity and design for environment etc. Therefore, how to successfully extract desi gn intent such as design and machining features and design-related information from the prototyping digital mock-ups created by different CAD systems for DFX consideration in upstream design stage is a very useful topic in integrated prod uct and process design and development. Presently, there are heterogeneous CAD systems in the market and the interoperat ion among the different CAD systems is indispensable. The interoperability of d ifferent CAD systems is by way of data exchanged technology such as STEP and IGE S. The critical weakness of this interoperation technology is that much of the design intent is lost in the interoperation process. Once the product digital m ock-ups is exchanged via data exchange technology such as IGES or STEP, the des ign intent including the dimension-driven design features and other attributes embedded in the part model are lost in the data translation process. Models rea d out of CAD systems come into other systems as featureless chunks of geometry e ntities. Obviously, the interoperation technology does not satisfy the industry need. It has been reported that this poor interoperation technology, which pro vides poor CAD models in neutral-format geometry had cost the automobile indust ry alone $1 billon per year. Fortunately, some researchers have been aware of t he criticality of this since only the United States industry spends billons of d ollars as a result of poor interoperability between computer-aided engineering software tools. In the past, product development was often done within a single company by co-located design team. In more recent years, there has been a busi ness paradigm shift in product development as the product development is being d one more often by geographically and temporally distributed design teams. There is a high level of outsourcing, not only of manufacturing but also of actual pr oduct development effort. Besides, product development across companies, and ev en within a single company, is often done within a heterogeneous software tool e nvironment. How to improve the interoperability of design intent created in het erogeneous software tool environment geographically has become a critical issue in next-generation product development system. Design intent in this research is defined as the outcome of design process. Des ign process goes from the identification of needs to satisfaction of that needs. Design intent satisfies this kind of needs. In this research, design intent i s created in a CAD system and embedded in part CAD model. The detailed design i ntent here includes design and manufacturing features and the feature-relat ed information such as feature parameters, feature relationships and some relate d characteristics such as associativity. Interoperability refers to the ability to share and communicate in the heterogeneous environment or heterogeneous soft | M W Fu W F Lu A Y C Nee S K Ong | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 2 |
| 4 | Moving element method for train-track dynamics显示文摘 | Koh C G Ong J S Y Chua D K H Feng J | 2003 | International Journal for Numerical Methods in Engineering2003，56，： | 1 |
| 5 | Connectivity-based multiple-circle fitting显示文摘 | Qiao Yu Ong S H | 2004 | Pattern Recognition2004，37，4： | 1 |
| 6 | A new method for characterizing denitrifying phosphorus removal bacteria by using three different types of electron acceptors显示文摘 | Hu J Y Ong S L Ng W J | 2003 | Water Research2003，37，： | 1 |
| 7 | Research frontier: memetic computation-past,present & future 显示文摘 | ONG Y S LIM M H CHEN Xian-shun | 2010 | IEEE Computational Intelli- gence Magazine2010，5，2： | 1 |
| 8 | Critical cooling rates for glass formation in Zr-Al-Cu-Ni alloys 显示文摘 | HNG H H LI Y NG S C ONG C K | 1996 | J Non-Cryst Solids1996，208，12： | 1 |
| 9 | Vena caval transection during retroperioneo copic nephrectomy: report of the complication and review of the literature显示文摘 | McAllister M Bhayani S B Ong A | 2004 | J Urol2004，172，： | 1 |
| 10 | Magnetic order in Co-doped and (Mn,Co) codoped ZnO thin films by pulsed laser eposition显示文摘 | YAN L ONG C K RAO X S | 2004 | Appl Phys2004，96，： | 1 |
| 11 | Inhibiting mitochondrial fission protects the heart against isehemia/reperfusion injury显示文摘 | Ong SB Subrayan S Lim SY | 2010 | Circulation2010，121，18： | 1 |
| 12 | An efficient method forcomputing leave-one-out error in support vector machines withgaussian kernels 显示文摘 | Lee M M S Keerthi S S Ong C J ei al | 2004 | IEEE Transition on Neural Networks2004，15，3： | 1 |
| 13 | Optimal planar evasive aircraft maneuvers against proportional navigation missiles 显示文摘 | Ong S Y Pierson B L | 1996 | Journal of Guidance Control and Dynamics1996，19，6： | 1 |
| 14 | Inhibiting mitochondrialfission protects the heart against ischemia/reperfusion injury 显示文摘 | Ong SB Subrayan S Lim SY | 2010 | Circulation2010，121，18： | 1 |
| 15 | Synthesis, characterization and comparative study of nano- Ag--TiO2 against Gram- positive and Gram- negative bacteria under fluorescent light 显示文摘 | BARUDIN N H A SREEKANTAN S ONG M T | 2014 | Food Control2014，，46： | 1 |
| 16 | Drug-related pemphigus and angiotensin converting enzyme inhibitors显示文摘 | Ong CS Cook N Lee S | 2000 | Australas J Dermatol2000，41，4： | 1 |
| 17 | Hybrid genetic algorithm and simulated annealing approach for the optimization of process plans for prismatic parts显示文摘 | LI W D ONG S K NEE A Y C | 2002 | International Journal of Product Research2002，40，8： | 1 |
| 18 | Preventing Mud Losses and Differential Sticking by Altering Effective Stress of Depleted Sands显示文摘 | Benaissa S Bachelor A Ong S | | SPE0，，： | 1 |
| 19 | Geographic-time distribution of ambulance calls in Singapore:utility of geographic information system in ambulance deployment (CARE 3)显示文摘 | ONG M E NG F S OVERTON J | 2009 | Ann Acad Med Singapore2009，38，3： | 1 |
| 20 | Using real-time tissue elastography for breast lesion evaluation 显示文摘 | Raza S Odulate A Ong EM | 2010 | J Ultrasound Med2010，29，4： | 1 |
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