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| 1 | Synergistic Effects of Chuanxiong-Chishao Herb-Pair on Promoting Angiogenesis at Network Pharmacological and Pharmacodynamic Levels显示文摘Objective: To investigate the synergistic effects of Chuanxiong-Chishao herb-pair(CCHP) on promoting angiogenesis in silico and in vivo. Methods: The mechanisms of action of an herb-pair, ChuanxiongChishao, were investigated using the network pharmacological and pharmacodynamic strategies involving computational drug target prediction and network analysis, and experimental validation. A set of network pharmacology methods were created to study the herbs in the context of targets and diseases networks, including prediction of target profiles and pharmacological actions of main active compounds in Chuanxiong and Chishao. Furthermore, the therapeutic effects and putative molecular mechanisms of Chuanxiong-Chishao actions were experimentally validated in a chemical-induced vascular insufficiency model of transgenic zebrafish in vivo. The m RNA expression of the predicted targets were further analyzed by real-time polymerase chain reaction(RT-PCR). Results: The computational prediction results found that the compounds in Chuanxiong have antithrombotic, antihypertensive, antiarrhythmic, and antiatherosclerotic activities, which were closely related to protecting against hypoxic-ischemic encephalopathy, ischemic stroke, myocardial infarction and heart failure. In addition, compounds in Chishao were found to participate in anti-inflammatory effect and analgesics. Particularly, estrogen receptor α(ESRα) and hypoxia-inducible factor 1-α(HIF-1α) were the most important potential protein targets in the predicted results. In vivo experimental validation showed that post-treatment of tetramethylpyrazine hydrochloride(TMP·HCl) and paeoniflorin(PF) promoted the regeneration of new blood vessels in zebrafish involving up-regulating ESRα m RNA expression. Co-treatment of TMP·HCl and PF could enhance the vessel sprouting in chemical-induced vascular insufficiency zebrafish at the optimal compatibility proportion of PF 10 μmol/L with TMP·HCl 1 μmol/L. Conclusions: The network pharmacological strategies combining drug target prediction and network analysis identified some putative targets of CCHP. Moreover, the transgenic zebrafish experiments demonstrated that the Chuanxiong-Chishao combination synergistically promoted angiogenic activity, probably involving ESRα signaling pathway. | WANG Yan GUO Gang YANG Bin-rui XIN Qi-qi LIAO Qi-wen LEE Simon Ming-Yuen HU Yuan-jia CHEN Ke-ji CONG Wei-hong | 2017 | Chinese Journal of Integrative Medicine2017，23，9： | 19 |
| 2 | Robotic surgery for rectal cancer: A systematic review of current practice显示文摘AIM: To give a comprehensive review of current litera-ture on robotic rectal cancer surgery.METHODS: A systematic review of current literature via PubMed and Embase search engines was per-formed to identify relevant articles from january 2007 to november 2013. The keywords used were: 'robotic surgery', 'surgical robotics', 'laparoscopic computer-assisted surgery', 'colectomy' and 'rectal resection'. RESULTS: After the initial screen of 380 articles, 20 pa-pers were selected for review. A total of 1062 patients(male 64.0%) with a mean age of 61.1 years and body mass index of 24.9 kg/m2 were included in the review.Out of 1062 robotic-assisted operations, 831(78.2%) anterior and low anterior resections, 132(12.4%) in-tersphincteric resection with coloanal anastomosis, 98(9.3%) abdominoperineal resections and 1(0.1%) Hart-mann's operation were included in the review. Robotic rectal surgery was associated with longer operative time but with comparable oncological results and anastomotic leak rate when compared with laparoscopic rectal surgery. CONCLUSION: Robotic colorectal surgery has con-tinued to evolve to its current state with promising re-sults; feasible surgical option with low conversion rate and comparable short-term oncological results. The challenges faced with robotic surgery are for more high quality studies to justify its cost. | Tony Wing Chung Mak Janet Fung Yee Lee Kaori Futaba Sophie Sok Fei Hon Dennis Kwok Yu Ngo Simon Siu Man Ng | 2014 | World Journal of Gastrointestinal Oncology2014，6，6： | 16 |
| 3 | Essential oil of Curcuma wenyujin induces apoptosis in human hepatoma cells显示文摘AIM: To investigate the effects of the essential oil of Curcuma wenyujin (CWO) on growth inhibition and on the induction of apoptosis in human HepG2 cancer cells. METHODS: The cytotoxic effect of drugs on HepG2 cells was measured by 3-(4,5-dimethylthiazol-2- yl)-2,5-diphenyltetra-zolium bromide (MTT) assay. DNA fragmentation was visualized by agarose gel electrophoresis. Cell cycle and mitochondrial transmembrane potential (△Ψm) were determined by flow cytometry (FCM). Cytochrome C immunostaining was evaluated by fluorescence microscopy. Caspase-3 enzymatic activity was assayed by the cleavage of Ac-DEVD-R110. Cleaved PARP and active caspase-3 protein levels were measured by FCM using BD? CBA Human Apoptosis Kit. RESULTS: Treatment with CWO inhibited the growth of HepG2 cells in a dose-dependent manner, and the IC50 of CWO was approximately 70 μg/mL. CWO was found to inhibit the growth of HepG2 cells by inducing a cell cycle arrest at S/G2. DNA fragmentation was evidentlyobserved at 70 μg/mL after 72 h of treatment. During the process, cytosolic HepG2 cytochrome C staining showed a markedly stronger green fluorescence than in control cells in a dose-dependent fashion, and CWO also caused mitochondrial transmembrane depolarization. Furthermore, the results clearly demonstrated that both, activity of caspase-3 enzyme and protein levels of cleaved PARP, significantly increased in a dose- dependent manner after treatment with CWO. CONCLUSION: CWO exhibits an antiproliferative effect in HepG2 cells by inducing apoptosis. This growth inhibition is associated with cell cycle arrest, cytochrome C translocation, caspase 3 activation, Poly- ADP-ribose polymerase (PARP) degradation, and loss of mitochondrial membrane potential. This process involves a mitochondria-caspase dependent apoptosis pathway. As apoptosis is an important anti-cancer therapeutic target, these results suggest a potential of CWO as a chemotherapeutic agent. | YU Xiao Feng-Qing Yang Shao-Ping Li Guang Hu Simon Ming-Yuen Lee Yi-Tao Wang | 2008 | World Journal of Gastroenterology2008，14，27： | 13 |
| 4 | Telerobotic-assisted laparoscopic abdominoperineal resection for low rectal cancer: Report of the first case in Hong Kong and China with an updated literature review显示文摘Telerobotic surgery is the most advanced development in the field of minimally invasive surgery. The da Vinci surgical system, which is currently the most widely used telerobotic device, was approved by the Food and Drug Administration of the United States of America for clinical use in all abdominal operations in July 2000. The first da Vinci surgical system in China was installed in November 2005 at our institution. We herein report the first telerobotic-assisted laparoscopic abdominoperineal resection using the 3-arm da Vinci surgical system for low rectal cancer in Hong Kong and China, which was performed in August 2006. The operative time and blood loss were 240 min and 200 mL, respectively. There was no complication, and the patient was discharged on postoperative day five. An updated review of published literature on telerobotic-assisted colorectal surgery is included in this report, with special emphasis on its advantages and limitations. | Simon Siu-Man Ng Janet Fung-Yee Lee Raymond Ying-Chang Yiu Jimmy Chak-Man Li Sophie Sok-Fei Hon | 2007 | World Journal of Gastroenterology2007，13，17： | 12 |
| 5 | 新生儿复苏培训降低新生儿死亡率的效能分析:文献综述,meta分析与Delphi法的应用显示文摘[背景]全球每年13600万新生儿中,约1000万需要外界的帮助才能建立自主呼吸,每年有约814000例新生儿死亡是由分娩相关足月儿死亡(以往定义为'出生窒息')所导致的。目前尚缺乏关于新生儿复苏培训降低新生儿死亡率效能的系统性评价。[目的]对在医院和社区层面开展的快速评估及初步刺激、基本的复苏措施这两种新生儿复苏培训干预方法在降低足月新生儿分娩相关死亡率('出生窒息')、早产相关并发症死亡率这两个生命指标方面的效能进行评价。[方法]采用系统综述的方法,检索并筛选符合标准的新生儿复苏培训研究文献。采用GRADE方法对文献的质量进行评价。对符合要求的文件进行Meta分析。对数据质量较低的文献采用专家咨询法估计效能大小。[结果]通过文献检索筛选了24篇新生儿复苏培训干预研究(20篇观察性研究,2篇半试验研究,2篇随机对照研究)。对其中3篇文献进行Meta分析结果显示,以医院为基础的新生儿复苏培训可使分娩相关足月儿死亡降低30%(RR=0.70,95%CI0.59~0.84);文献中涉及早产儿死亡率效能的数据质量不高,因此采用专家咨询法进行估计。以社区为基础的新生儿复苏培训干预研究具有较高的异质性,复苏培训通常是一系列培训包的一部分,且对早产儿和足月儿的定义标准不一致。专家咨询法估计结果显示,新生儿快速评估和初步刺激可使分娩相关新生儿死亡、早产儿死亡均降低10%;以医院为基础的培训可使早产儿死亡进一步降低10%,以社区为基础的培训可使分娩相关足月儿死亡率进一步降低20%,早产儿死亡率进一步降低5%。[结论]新生儿复苏培训在医院层面可以使足月新生儿分娩相关死亡率降低30%,然而中低收入水平的国家培训覆盖率仍较低。专家咨询法估计新生儿复苏培训在社区层面降低足月儿及早产儿死亡率的效能较小。需要对新生儿复苏培训的效果、成本、实施策略等进行更深入的研究与评价。 | Anne CC Lee Simon Cousens Stephen N Wall 徐韬 | 2012 | 中国妇幼卫生杂志2012，3，2： | 11 |
| 6 | Role and outcome of conventional surgery in the treatment of pyogenic liver abscess in the modern era of minimally invasive therapy显示文摘AIM:To evaluate the role and outcome of conventional surgery in the treatment of pyogenic liver abscess in the modern era of minimally invasive therapy. METHODS:The medical records of thirteen patients with pyogenic liver abscess who underwent surgical treatment between January 1995 and December 2002 were retrospectively reviewed to determine the clinical presentation, indication and nature of surgery, and out-come of surgery. RESULTS:The patients were predominantly women (10/13) with a mean age of 65 ± 17 years. Their main presenting symptoms were abdominal pain (100%) and fever (77%). The aetiologies included biliary (n = 6), cryptogenic (n = 3), portal (n = 2), and trauma (n = 2). Seven patients underwent percutaneous drainage as the initial treatment. Of these, three patients developed peritonitis secondary to peritoneal spillage. Another four patients failed to respond because of multilocula-tion. Salvage surgery was required in these patients. Six patients proceeded to straight laparotomy:two had marked sepsis and multiloculated abscess that precluded percutaneous drainage, and four presented with perito-nitis of uncertain pathology. Surgical procedures included deroofment and drainage (n = 9), liver resection (n = 3), peritoneal lavage (n = 2), cholecystectomy (n = 4), and exploration of common bile duct (n = 2). One patient required reoperation because of bleeding. Three patients required further percutaneous drainage after surgery. The overall mortality was 46%. Four patients died of multiorgan failure and two patients died of pulmonary embolism. CONCLUSION:Surgical treatment of pyogenic liver ab-scess is occasionally needed when percutaneous drainage has failed due to various reasons. Mortality rate in this group of patients has remained high. | Simon Siu-Man Ng Janet Fung-Yee Lee Paul Bo-San Lai | 2008 | World Journal of Gastroenterology2008，14，5： | 7 |
| 7 | Quality of life after laparoscopic vs open sphincter-preserving resection for rectal cancer显示文摘AIM: To compare quality of life (QoL) outcomes in Chinese patients after curative laparoscopic vs open surgery for rectal cancer. METHODS: Eligible Chinese patients with rectal cancer undergoing curative laparoscopic or open sphincterpreserving resection between July 2006 and July 2008 were enrolled in this prospective study. The QoL outcomes were assessed longitudinally using the validated Chinese versions of the European Organization for Research and Treatment of Cancer QLQ-C30 and QLQCR38 questionnaires before surgery and at 4, 8, and 12 mo after surgery. The QoL scores at the different time points were compared between the laparoscopic and open groups. A higher score on a functional scale indicated better functioning, whereas a higher score on a symptom scale indicated a higher degree of symptoms.RESULTS: Seventy-four patients (49 laparoscopic and 25 open) were enrolled. The two groups of patients were comparable in terms of sociodemographic data, types of surgery, tumor staging, and baseline mean QoL scores. There was no significant decrease from baseline in global QoL for the laparoscopic group at different time points, whereas the global QoL was worse compared to baseline beginning at 4 mo but returned to baseline by 12 mo for the open group (P = 0.019, Friedman test). Compared to the open group, the laparoscopic group had significantly better physical (89.9±1.4 vs 79.2±3.7, P = 0.016), role (85.0±3.4 vs 63.3±6.9, P = 0.005), and cognitive (73.5±3.4 vs 50.7±6.2, P = 0.002) functioning at 8 mo, fewer micturition problems at 4-8 mo (4 mo: 32.3±4.7 vs 54.7±7.1, P = 0.011; 8 mo: 22.8±4.0 vs 40.7±6.9, P = 0.020), and fewer male sexual problems from 8 mo onward (20.0±8.5 vs 76.7±14.5, P = 0.013). At 12 mo after surgery, no significant differences were observed in any functional or symptom scale between the two groups, with the exception of male sexual problems, which remained worse in the open group (29.2±11.3 vs 80.0±9.7, P = 0.026). CONCLUSION: Laparoscopic sphincter-preserving resection for rectal cancer is associated with better preservation of QoL and fewer male sexual problems when compared with open surgery in Chinese patients. These findings, however, should be interpreted with caution because of the small sample size of the study. | Simon Siu-Man Ng Wing-Wa Leung Cherry Yee-Ni Wong Sophie Sok-Fei Hon Tony Wing-Chung Mak Dennis KwokYu Ngo Janet Fung-Yee Lee | 2013 | World Journal of Gastroenterology2013，19，29： | 6 |
| 8 | Command and Control Cities in Global Space-economy Before and after 2008 Geo-economic Transition显示文摘The global economic downturn caused primarily by the US sub-prime mortgage crisis in 2007 engendered revenue loss of the multinational corporations.Existing studies have yet to depict the detrimental impacts on city's command and control functions induced by the sub-prime mortgage crisis together with its residual wave of global economic recession on the global spatial economy.Recent and previous studies have produced an 'instant history' of the global spatial economy before the global economic downturn undermines the global economy in late 2008.However,the waxes and wanes of major cities' command and control functions on the global economic arena before and after the outbreak of financial crisis and its associated geo-economic transitions are still poorly understood.This paper attempts to contribute a new set of customized data to update and fill in the gap in the literature with the investigation of the command and control functions of cities around the world from 2005 to 2009.Particular attentions are paid to the time-space relationship of the geo-economic transition that can capture the recent historical images of the command and control situation of different cities in the world. | Ernest Ka Shing LEE Simon Xiaobin ZHAO Yang XIE | 2012 | Chinese Geographical Science2012，22，3： | 5 |
| 9 | Paeoniflorin Promotes Angiogenesis in A Vascular Insufficiency Model of Zebrafish in vivo and in Human Umbilical Vein Endothelial Cells in vitro显示文摘Objective: To investigate the pro-angiogenic effects of paeoniflorin(PF) in a vascular insufficiency model of zebrafish and in human umbilical vein endothelial cells(HUVECs). Methods: In vivo, the pro-angiogenic effects of PF were tested in a vascular insufficiency model in the Tg(fli-1:EGFP)y1 transgenic zebrafish. The 24 h post fertilization(hpf) embryos were pretreated with vascular endothelial growth factor(VEGF) receptor tyrosine kinase inhibitor Ⅱ(VRI) for 3 h to establish the vascular insufficiency model and then post-treated with PF for 24 h. The formation of intersegmental vessels(ISVs) was observed with a fluorescence microscope. The m RNA expression of fms-like tyrosine kinase-1(flt-1), kinase insert domain receptor(kdr), kinase insert domain receptor like(kdrl) and von Willebrand factor(v WF) were analyzed by real-time polymerase chain reaction(PCR). In vitro, the pro-angiogenic effects of PF were observed in HUVECs in which cell proliferation, migration and tube formation were assessed. Results: PF(6.25–100 μmol/L) could rescue VRI-induced blood vessel loss in zebrafish and PF(25–100 μmol/L), thereby restoring the m RNA expressions of flt-1, kdr, kdrl and v WF, which were down-regulated by VRI treatment. In addition, PF(0.001–0.03 μmol/L) could promote the proliferation of HUVECs while PF stimulated HUVECs migration at 1.0–10 μmol/L and tube formation at 0.3 μmol/L. Conclusion: PF could promote angiogenesis in a vascular insufficiency model of zebrafish in vivo and in HUVECs in vitro. | XIN Qi-qi YANG Bin-rui ZHOU He-feng WANG Yan YI Bo-wen CONG Wei-hong LEE Simon Ming-Yuen CHEN Ke-ji | 2018 | Chinese Journal of Integrative Medicine2018，24，7： | 5 |
| 10 | Portal venous gas and thrombosis in a Chinese patient with fulminant Crohn’s colitis: A case report with literature review显示文摘Ever since its earliest reports, portal venous gas (PVG) has been associated with numerous intraabdominal catastrophes and has served as an indication for urgent surgical exploration. It is traditionally regarded to be an ominous finding of impending death, with highest mortality reported in patients with underlying bowel ischemia. Today, computed tomography has demonstrated a wider range of clinical conditions associated with PVG, some of which are ‘benign’ and do not necessarily require surgery, unless when there are signs of intraabdominal catastrophe or systemic toxicity. One of these ‘benign’ conditions is Crohn’s disease. The present report describes a 19-year-old Chinese boy with Crohn’s pancolitis who presented with septic shock associated with PVG and portal vein thrombosis, and was successfully managed surgically. To our knowledge, this is the fi rst report of PVG and portal vein thrombosis associated with Crohn’s disease in a Chinese patient. In addition, we have also reviewed the reports of another 18 Crohn’s patients with PVG previously described in the English literature. Specifi c predisposing factors for PVG were identified in 8 patients, including barium enema, colonoscopy, blunt abdominal trauma, and enterovenous f istula. The patients who developed PVG following barium enema and blunt trauma were all asymptomatic and no specifi c treatment was necessary. Eleven patients (58%) who presented with signs of intraabdominal catastrophe or systemic toxicity required either immediate or eventual surgery. The overall mortality rate among the 19 patients was only 11%. The present literature review has shown that the f inding of PVG associated with Crohn’ s disease does not always mandate surgical intervention. It is the clinical features and the related complications that ultimately determine the treatment approaches. The overall outcome of PVG associated with Crohn’s disease has been favourable. | Simon Siu-Man Ng Raymond Ying-Chang Yiu Janet Fung-Yee Lee Jimmy Chak-Man Li Ka-Lau Leung | 2006 | World Journal of Gastroenterology2006，12，34： | 4 |
| 11 | Multi-limb necrotizing fasciitis in a patient with rectal cancer显示文摘引起坏死筋膜炎是破坏软织物感染影响扁带和下的软纸巾。文学评论识别了几个相关风险因素,包括恶意,酒精中毒,营养不良,糖尿病,男性和老年。仅仅在与颜色描述它的稀罕协会的文学有贫乏的病案报告表面的恶意。所有出版的格被归因于在会阴的区域上导致引起坏死筋膜炎的肠穿孔。孤立上面或下肢疾病很少被识别。同时上面并且在颜色的下肢感染表面的癌症病人从来没在文学被描述过。我们与内在的非穿孔的直肠的癌在一个病人报导多手足引起坏死筋膜炎的一个不平常的案例。 | Shirley Yuk Wah Liu Simon Siu Man Ng Janet Fung Yee Lee | 2006 | World Journal of Gastroenterology2006，12，32： | 4 |
| 12 | Aberrant cholesterol metabolic signaling impairs antitumor immunosurveillance through natural killer T cell dysfunction in obese liver显示文摘Obesity is a major risk factor for cancers including hepatocellular carcinoma(HCC)that develops from a background of non-alcoholic fatty liver disease(NAFLD).Hypercholesterolemia is a common comorbidity of obesity.Although cholesterol biosynthesis mainly occurs in the liver,its role in HCC development of obese people remains obscure.Using high-fat high-carbohydrate diet-associated orthotopic and spontaneous NAFLD-HCC mouse models,we found that hepatic cholesterol accumulation in obesity selectively suppressed natural killer T(NKT)cell-mediated antitumor immunosurveillance.Transcriptome analysis of human liver revealed aberrant cholesterol metabolism and NKT cell dysfunction in NAFLD patients.Notably,cholesterol-lowering rosuvastatin restored NKT expansion and cytotoxicity to prevent obesogenic diet-promoted HCC development.Moreover,suppression of hepatic cholesterol biosynthesis by a mammalian target of rapamycin(mTOR)inhibitor vistusertib preceded tumor regression,which was abolished by NKT inactivation but not CD8^(+)T cell depletion.Mechanistically,sterol regulatory element-binding protein 2(SREBP2)-driven excessive cholesterol production from hepatocytes induced lipid peroxide accumulation and deficient cytotoxicity in NKT cells,which were supported by findings in people with obesity,NAFLD and NAFLD-HCC.This study highlights mTORC1/SREBP2/cholesterol-mediated NKT dysfunction in the tumor-promoting NAFLD liver microenvironment,providing intervention strategies that invigorating NKT cells to control HCC in the obesity epidemic. | Wenshu Tang Jingying Zhou Weiqin Yang Yu Feng Haoran Wu Myth T.S.Mok Lingyun Zhang Zhixian Liang Xiaoyu Liu Zhewen Xiong Xuezhen Zeng Jing Wang Jiahuan Lu Jingqing Li Hanyong Sun Xiaoyu Tian Philip Chun Yeung Yong Hou Heung Man Lee Candice C.H.Lam Howard H.W.Leung Anthony W.H.Chan Ka Fai To John Wong Paul B.S.Lai Kelvin K.C.Ng Simon K.H.Wong Vincent W.S.Wong Alice P.S.Kong Joseph J.Y.Sung Alfred S.L.Cheng | 2022 | Cellular & Molecular Immunology2022，19，7： | 3 |
| 13 | Long-Term Morbidity and Oncologic Outcomes of Laparoscopic-Assisted Anterior Resection for Upper Rectal Cancer: Ten-Year Results of a Prospective, Randomized Trial显示文摘 | Simon S. M. Ng Ka Lau Leung Janet F. Y. Lee Raymond Y. C. Yiu Jimmy C. M. Li Sophie S. F. Hon | 2009 | Diseases of the Colon & Rectum2009，，： | 2 |
| 14 | Non-occlusive mesenteric ischemia: Diagnostic challenges and perspectives in the era of artificial intelligence显示文摘Acute mesenteric ischemia(AMI)is a severe condition associated with poor prognosis,ultimately leading to death due to multiorgan failure.Several mechanisms may lead to AMI,and non-occlusive mesenteric ischemia(NOMI)represents a particular form of AMI.NOMI is prevalent in intensive care units in critically ill patients.In NOMI management,promptness and accuracy of diagnosis are paramount to achieve decisive treatment,but the last decades have been marked by failure to improve NOMI prognosis,due to lack of tools to detect this condition.While real-life diagnostic management relies on a combination of physical examination,several biomarkers,imaging,and endoscopy to detect the possibility of several grades of NOMI,research studies only focus on a few elements at a time.In the era of artificial intelligence(AI),which can aggregate thousands of variables in complex longitudinal models,the prospect of achieving accurate diagnosis through machine-learning-based algorithms may be sought.In the following work,we bring you a state-of-the-art literature review regarding NOMI,its presentation,its mechanics,and the pitfalls of routine work-up diagnostic exams including biomarkers,imaging,and endoscopy,we raise the perspectives of new biomarker exams,and finally we discuss what AI may add to the field,after summarizing what this technique encompasses. | Simon Bourcier Julian Klug Lee S Nguyen | 2021 | World Journal of Gastroenterology2021，27，26： | 2 |
| 15 | A prospective trial of volumetric intensity-modulated arc therapy vs conventional intensity modulated radiation therapy in advanced head and neck cancer显示文摘AIM: To prospectively compare volumetric intensitymodulated arc therapy(VMAT) and conventional intensity-modulated radiation therapy(IMRT) in coverage of planning target volumes and avoidance of multiple organs at risk(OARs) in patients undergoing definitive chemoradiotherapy for advanced(stage Ⅲ or Ⅳ)squamous cell cancer of the head and neck. METHODS: Computed tomography scans of 20 patients with advanced tumors of the larynx, naso-, oroand hypopharynx were prospectively planned using IMRT(7 field) and VMAT using two arcs. Calculated doses to planning target volume(PTV) and OAR were compared between IMRT and VMAT plans. Dose-volume histograms(DVH) were utilized to obtain calculated doses to PTV and OAR, including parotids, cochlea,spinal cord, brainstem, anterior tongue, pituitary and brachial plexus. DVH's for all structures were compared between IMRT and VMAT plans. In addition the planswere compared for dose conformity and homogeneity. The final treatment plan was chosen by the treating radiation oncologist. RESULTS: VMAT was chosen as the ultimate plan in 18 of 20 patients(90%) because the plans were thought to be otherwise clinically equivalent. The IMRT plan was chosen in 2 of 20 patients because the VMAT plan produced concentric irradiation of the cord which was not overcome even with an avoidance structure. For all patients, VMAT plans had a lower number of average monitor units on average(MU = 542.85) than IMRT plans(MU = 1612.58)(P < 0.001). Using the conformity index(CI), defined as the 95% isodose volume divided by the PTV, the IMRT plan was more conformal with a lower conformity index(CI = 1.61) than the VMAT plan(CI = 2.00)(P = 0.003). Dose homogeneity, as measured by average standard deviation of dose distribution over the PTV, was not different with VMAT(1.45 Gy) or IMRT(1.73 Gy)(P = 0.069). There were no differences in sparing organs at risk.CONCLUSION: In this prospective study, VMAT plans were chosen over IMRT 90% of the time. Compared to IMRT, VMAT plans used only one third of the MUs, had shorter treatment times, and similar sparing of OAR. Overall, VMAT provided similar dose homogeneity but less conformity in PTV irradiation compared to IMRT. This difference in conformity was not clinically significant. | Simon D Fung-Kee-Fung Rachel Hackett Lee Hales Graham Warren Anurag K Singh | 2012 | World Journal of Clinical Oncology2012，3，4： | 2 |
| 16 | 香薷属植物的传统应用,化学与药理学研究进展(英文)显示文摘本文对20种产于中国的唇形科香薷属植物的化学成分、药理活性与传统应用进行了综述和比较。据文献报道,这些植物大部分用于治疗呼吸道和胃肠道的功能失调。另外,部分植物还具有抗菌、抗炎、解热镇痛和心肌缺血保护作用。从这些植物分离得到的挥发油和黄酮通常被认为是植物药理作用的物质基础。 | 刘艾林 Simon M.Y. Lee 李铭源 王一涛 杜冠华 | 2007 | Journal of Chinese Pharmaceutical Sciences2007，16，2： | 2 |
| 17 | Hepatic venous outflow obstruction after piggyback liver transplantation by an unusual mechanism:Report of a case显示文摘Hepatic venous outflow obstruction after piggyback liver transplantation is a very rare complication. An unusual mechanism aggravating it is reported. A 33-year-old man with end-stage hepatitis B liver cirrhosis underwent a piggyback orthotopic liver transplantation using a full-size cadaveric graft. Two months after transplantation, he developed gross ascites refractory to maximal diuretic therapy. Doppler ultrasound showed patent portal and hepatic veins. Serial computed tomography scans revealed a hypoperfused right posterior segment of the liver which subsequently underwent atrophy. Hepatic venography demonstrated a high-grade stenosis with an element of torsion of venous drainage at the anastomosis. The stenosis was successfully treated with repeated percutaneous balloon angioplasty. The patient remained asymptomatic six months afterwards with complete resolution of ascites and peripheral edema. We postulate that liver allograft segmental hypoperfusion and atrophy may aggravate or result in a hepatic venous outflow problem by the mechanism of torsion effect. Percutaneous balloon angioplasty is a safe and effective treatment modality for anastomotic stenosis. | Simon Siu-Man Ng Simon Chun-Ho Yu Janet Fung-Yee Lee Paul Bo-San Lai Wan-Yee Lau | 2006 | World Journal of Gastroenterology2006，12，33： | 2 |
| 18 | The CONSTANS gene of arabidopsis promotes flowering and encodes a protein showing similarities to zinc finger transcription factors显示文摘 | Joanna Putterill Frances Robson Karen Lee Rüdiger Simon George Coupland | 1995 | Cell1995，，6： | 2 |
| 19 | The Efficacy, Safety and Durability of Selective Renal Arterial Embolization in Treating Symptomatic and Asymptomatic Renal angiomyolipoma显示文摘 | Chi Kwok Chan Simon Yu Sidney Yip Paul Lee | 2011 | Urology2011，，3： | 2 |
| 20 | The Adult Mouse and Human Pancreas Contain Rare Multipotent Stem Cells that Express Insulin显示文摘 | Simon R. Smukler Margot E. Arntfield Rozita Razavi George Bikopoulos Phillip Karpowicz Raewyn Seaberg Feihan Dai Simon Lee Rosemary Ahrens Paul E. Fraser Michael B. Wheeler Derek van der Kooy | 2011 | Cell Stem Cell2011，，3： | 2 |
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