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1089篇 您的检索式:作者名="Cheah"
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1A new prognostic histopathologic classification of nasopharyngeal carcinoma显示文摘Background:The current World Health Organization(WHO) classification of nasopharyngeal carcinoma(NPC) con?veys little prognostic information.This study aimed to propose an NPC histopathologic classification that can poten?tially be used to predict prognosis and treatment response.Methods:We initially developed a histopathologic classification based on the morphologic traits and cell differentia?tion of tumors of 2716 NPC patients who were identified at Sun Yat?sen University Cancer Center(SYSUCC)(training cohort).Then,the proposed classification was applied to 1702 patients(retrospective validation cohort) from hospitals outside SYSUCC and 1613 patients(prospective validation cohort) from SYSUCC.The efficacy of radiochemotherapy and radiotherapy modalities was compared between the proposed subtypes.We used Cox proportional hazards models to estimate hazard ratios(HRs) with 95% confidence intervals(CI) for overall survival(OS).Results:The 5?year OS rates for all NPC patients who were diagnosed with epithelial carcinoma(EC;3708 patients),mixed sarcomatoid?epithelial carcinoma(MSEC;1247 patients),sarcomatoid carcinoma(SC;823 patients),and squamous cell carcinoma(SCC;253 patients) were 79.4%,70.5%,59.6%,and 42.6%,respectively(P < 0.001).In mul?tivariate models,patients with MSEC had a shorter OS than patients with EC(HR = 1.44,95% CI = 1.27–1.62),SC(HR = 2.00,95% CI = 1.76–2.28),or SCC(HR = 4.23,95% CI = 3.34–5.38).Radiochemotherapy significantly improved survival compared with radiotherapy alone for patients with EC(HR 49–0.75),and possibly for those with SCC(HR = 0.67,95% CI = 0.56–0.80),MSEC(HR = 0.58,95% CI = 0..74–1.28).= 0.63;95% CI = 0.40–0.98),but not for patients with SC(HR = 0.97,95% CI = 0Conclusions:The proposed classification offers more information for the prediction of NPC prognosis compared with the WHO classification and might be a valuable tool to guide treatment decisions for subtypes that are associ?ated with a poor prognosis.Hai-Yun Wang Yih-Leong Chang Ka-Fai To Jacqueline S.G.Hwang Hai-Qiang Mai Yan-Fen Feng Ellen T.Chang Chen-Ping Wang Michael Koon Ming Kam Shie-Lee Cheah Ming Lee Li Gao Hui-Zhong Zhang Jie-Hua He Hao Jiang Pei-Qing Ma Xiao-Dong Zhu Liang Zeng Chun-Yan Chen Gang Chen Ma-Yan Huang Sha Fu Qiong Shao An-Jia Han Hai-Gang Li Chun-Kui Shao Pei-Yu Huang Chao-Nan Qian Tai-Xiang Lu Jin-Tian Li Weimin Ye Ingemar Ernberg Ho Keung Ng Joseph T.S.Wee Yi-Xin Zeng Hans-Olov Adami Anthony T.C.Chan Jian-Yong Shao 2016Chinese Journal of Cancer2016,35,6:10
2Enhancement of glioblastoma radioresponse by a selective COX-2 inhibitor celecoxib: inhibition of tumor angiogenesis with extensive tumor necrosis显示文摘Kang KB Wang TT Woon CT Cheah ES Moore XL Zhu C Wong MC 2007中国神经肿瘤杂志2007,5,2:8
3Indian hedgehog mutations causing brachydactyly type A1 impair Hedgehog signal transduction at multiple levels显示文摘Brachydactyly 打 A1 (BDA1 ) ,第一在人记录了孟德尔的正染色体的主导的混乱,被弄短或中间的指骨的缺席描绘。在印度刺猬(IHH ) 基因的异质接合的错误感觉变化作为 BDA1 的一个原因被识别了;然而,这些变化的生物化学的后果是不清楚的。在这份报纸,我们在印度刺猬(IhhN ) 的 N 终端碎片分析了三个 BDA1 变化(E95K, D100E,和 E131K ) 。结构的分析证明 E95K 变化在一条钙绑定沟把一个否定地控告的区域改变到一个断然控告的区域,并且 D100E 变化改变本地第三级的结构。而且,我们证明 E95K 和 D100E 变化导致了一温度敏感并且 IhhN 的钙依赖者不稳定性,它可能经由 lysosome 贡献变异的蛋白质的提高的细胞内部的降级。尤其是,所有三个变化影响了对受体 Patched1 (PTC1 ) 有约束力的 Hh,减少它的能力导致细胞的区别。我们建议这些是引起 BDA1 的变化的普通特征,影响 Hh 第三级的结构,细胞内部的命运,到受体 / 搭挡的绑定,和到细胞外的部件的绑定。这些特征的联合改变发信号的能力和范围,但是影响是可能的是变量和变化依赖者。在发信号的范围的潜在的变化被和 heparan 硫酸盐的一个提高的相互作用与 E95K 变化,然而并非 E131K 变化为 IHH 描绘。一起拿,我们的结果建议这些 IHH 变化影响在多重层次,引起的反常骨头发展和反常的位形成发信号的 Hh。Gang Ma Jiang Yu Yue Xiao Danny Chan Bo Gao Jianxin Hu Yongxing He Shengzhen Guo Jian Zhou Lingling Zhang Linghan Gao Wenjuan Zhang Yan Kang Kathryn SE Cheah Guoyin Feng Xizhi Guo Yujiong Wang Cong-zhao Zhou Lin He 2011Cell Research2011,21,9:6
4ROR2 gene is associated with risk of non-syndromic cleft palate in an Asian population显示文摘背景受体酷氨酸象kinase一样孤儿受体 2 ( ROR2 )基因最近被显示了在动物模型在腭的开发起重要作用并且居住在连接到的 chromosomal 区域非, syndromic 劈开嘴唇与或没有在学习是调查可能的协会在之间的这的 humans.The 目的劈开腭 ROR2 基因和 non-syndromic 我们测试了的这里的口头的 clefts.Methods 在在 297 non-syndromic 的 ROR2 基因的 38 合格单个核苷酸的多型性( SNP )Wang Hong Hetmanski, Jacqueline B. Ruczinski, Ingo Liang, Kung Yee Fallin, M. Daniele Redett, Richard J. Raymond, Gerald V. Chou, Yah-Huei Wu Chen, Philip Kuo-Ting Yeow, Vincent Chong, Samuel S. Cheah, Felicia S. H. Jabs, Ethylin Wang Scott, Alan F. Beaty, Terri H. 2012Chinese Medical Journal2012,,3:5
5Targeting cell surface receptors for axon regeneration in the central nervous system显示文摘Axon regeneration in the CNS is largely unsuccessful due to excess inhibitory extrinsic factors within lesion sites together with an intrinsic inability of neurons to regrow following injury. Recent work demonstrates that forced expression of certain neuronal transmembrane receptors can recapitulate neuronal growth resulting in successful growth within and through inhibitory lesion environments. More specifically, neuronal expression of integrin receptors such as alpha9beta1 integrin which binds the extracellular matrix glycoprotein tenascin-C, trk receptors such as trk B which binds the neurotrophic factor BDNF, and receptor PTPσ which binds chondroitin sulphate proteoglycans, have all been show to significantly enhance regeneration of injured axons. We discuss how reintroduction of these receptors in damaged neurons facilitates signalling from the internal environment of the cell with the external environment of the lesion milieu, effectively resulting in growth and repair following injury. In summary, we suggest an appropriate balance of intrinsic and extrinsic factors are required to obtain substantial axon regeneration.Menghon Cheah Melissa R.Andrews 2016Neural Regeneration Research2016,11,12:3
6Gigantic electric-field-induced second harmonic generation from an organic conjugated polymer enhanced by a band-edge effect显示文摘Electric-field-induced second harmonic generation(EFISH),a third-order nonlinear process,arises from the interaction between the electric field of an external bias and that of two incident photons.EFISH can be used to dynamically control the nonlinear optical response of materials and is therefore promising for active nonlinear devices.However,it has been challenging to achieve a strong modulation with EFISH in conventional nonlinear materials.Here,we report a large tunability of an EFISH signal from a subwavelength-thick polymer film sandwiched between a transparent electrode and a metallic mirror.By exploiting the band-edge-enhanced third-order nonlinear susceptibility of the organic conjugated polymer,we successfully demonstrate a gigantic EFISH effect with a modulation ratio up to 422%V^(−1) at a pumping wavelength of 840 nm.The band-edge-enhanced EFISH opens new avenues for modulating the intensity of SHG signals and for controlling nonlinear electro-optic interactions in nanophotonic devices.Shumei Chen King Fai Li Guixin Li Kok Wai Cheah Shuang Zhang 2019Light(Science & Applications)2019,8,1:3
7In Silico Prediction and Validation of Gfap as an miR-3099 Target in Mouse Brain显示文摘MicroRNAs are small non-coding RNAs that play crucial roles in the regulation of gene expression and protein synthesis during brain development. MiR-3099 is highly expressed throughout embryogenesis, especially in the developing central nervous system. Moreover, miR-3099 is also expressed at a higher level in differentiating neurons in vitro, suggesting that it is a potential regulator during neuronal cell development. This study aimed to predict the target genes of miR-3099 via in-silico analysis using four independent prediction algorithms(miRDB,miRanda, Target Scan, and DIANA-micro-T-CDS) with emphasis on target genes related to brain development and function. Based on the analysis, a total of 3,174 miR-3099 target genes were predicted. Those predicted by at least three algorithms(324 genes) were subjected to DAVID bioinformatics analysis to understand their overallfunctional themes and representation. The analysis revealed that nearly 70% of the target genes were expressed in the nervous system and a significant proportion were associated with transcriptional regulation and protein ubiquitination mechanisms. Comparison of in situ hybridization(ISH) expression patterns of miR-3099 in both published and in-house-generated ISH sections with the ISH sections of target genes from the Allen Brain Atlas identified 7 target genes(Dnmt3a, Gabpa, Gfap, Itga4,Lxn, Smad7, and Tbx18) having expression patterns complementary to miR-3099 in the developing and adult mouse brain samples. Of these, we validated Gfap as a direct downstream target of miR-3099 using the luciferase reporter gene system. In conclusion, we report the successful prediction and validation of Gfap as an miR-3099 target gene using a combination of bioinformatics resources with enrichment of annotations based on functional ontologies and a spatio-temporal expression dataset.Shahidee Zainal Abidin Jia-Wen Leong Marzieh Mahmoudi Norshariza Nordin Syahril Abdullah Pike-See Cheah King-Hwa Ling 2017Neuroscience Bulletin2017,33,4:3
8从菠萝薄细胞层切片直接诱导体细胞胚显示文摘以菠萝(Ananas comosus L. Merrill)杂交种MD1无菌苗为材料,通过培养薄细胞层切片(Thin cell layer,TCL)的方法,研究直接再生胚的固体培养体系。结果证明,预培养的设计2(在预培养基PT上黑暗预培养无菌苗1周后,从预培养苗茎顶端切取TCL,在MS+2,4-D2mg·L-1或1mg·L-1胚诱导培养基EI2上黑暗培养1周,然后转到光照条件下继续诱导胚1周,再在成熟胚培养基EM上培养2周,最后转入幼苗培养基PL上培养)是直接诱导获得体胚的最佳途径;诱导的体胚最初均来自于薄细胞层上微管束附近的细胞;picloram有利于芽的诱导,2,4-D有利于直接再生胚,但如果球形胚形成后一直培养在较高浓度的2,4-D培养基中,将阻碍球形胚和心形胚进一步发育为成熟胚,反而促进芽的生成。梁雪莲 陈晓玲 Kheng Cheah Diane M Sether Qi Li John Hu 2009园艺学报2009,36,11:3
9Epidemiology of prostatitis: new evidence for a world-wide problem显示文摘John N. Krieger Donald E. Riley Phaik Yeong Cheah Men Long Liong Kah Hay Yuen 2003World Journal of Urology2003,,2:3
10Rhubarb extract partially improves mucosal integrity in chemotherapy-induced intestinal mucositis显示文摘AIM To investigate the effects of orally gavaged aqueous rhubarb extract(RE) on 5-fluorouracil(5-FU)-induced intestinal mucositis in rats. METHODS Female Dark Agouti rats(n = 8/group) were gavaged daily(1 mL) with water, high-dose RE(HDR; 200 mg/kg) or low-dose RE(LDR; 20mg/kg) for eight days. Intestinal mucositis was induced(day 5) with 5-FU(150 mg/kg) via intraperitoneal injection. Intestinal tissue samples were collected for myeloperoxidase(MPO) activity and histological examination. Xenopus oocytes expressing aquaporin 4 water channels were prepared to examine the effect of aqueous RE on cell volume, indicating a potential mechanism responsible for modulating net fluid absorption and secretion in the gastrointestinal tract. Statistical significance was assumed at P < 0.05 by one-way ANOVA. RESULTS B o d y w e i g h t w a s s i g n i f i c a n t l y r e d u c e d i n r a t s administered 5-FU compared to healthy controls(P < 0.01). Rats administered 5-FU significantly increased intestinal MPO levels(≥ 307%; P < 0.001), compared to healthy controls. However, LDR attenuated this effect in 5-FU treated rats, significantly decreasing ileal MPO activity(by 45%; P < 0.05), as compared to 5-FU controls. 5-FU significantly reduced intestinal mucosal thickness(by ≥ 29% P < 0.001) as compared to healthy controls. LDR significantly increased ileal mucosal thickness in 5-FU treated rats(19%; P < 0.05) relative to 5-FU controls. In xenopus oocytes expressing AQP4 water channels, RE selectively blocked water influx into the cell, induced by a decrease in external osmotic pressure. As water efflux was unaltered by the presence of extracellular RE, the directional flow of water across the epithelial barrier, in the presence of extracellular RE, indicated that RE may alleviate water loss across the epithelial barrier and promote intestinal health in chemotherapy-induced intestinal mucositis.CONCLUSION In summary, low dose RE improves selected parameters of mucosal integrity and reduces ileal inflammation, manifesting from 5-FU-induced intestinal mucositis.Juliana E Bajic Georgina L Eden Lorrinne S Lampton Ker Y Cheah Kerry A Lymn Jinxin V Pei Andrea J Yool Gordon S Howarth 2016World Journal of Gastroenterology2016,22,37:3
11“Scarless” (in the Neck) Endoscopic Thyroidectomy (SET): An Evidence-based Review of Published Techniques显示文摘Charles T. K. Tan W. K. Cheah Leigh Delbridge 2008World Journal of Surgery2008,,7:3
12Comparative Analysis of the Safety and Efficacy of Transcatheter Arterial Chemoembolization and Yttrium-90 Radioembolization in Patients with Unresectable Hepatocellular Carcinoma显示文摘Craig Lance Gordon McLennan Nancy Obuchowski Grace Cheah Abraham Levitin Mark Sands James Spain Shyam Srinivas Sankaran Shrikanthan Federico N. Aucejo Richard Kim K.V. Narayanan Menon 2011Journal of Vascular and Interventional Radiology2011,,12:3
13A multi-ethnic study of a PNPLA3 gene variant and its association with disease severity in non-alcoholic fatty liver disease显示文摘Shamsul Zain Rosmawati Mohamed Sanjiv Mahadeva Phaik Cheah Sanjay Rampal Roma Basu Zahurin Mohamed 2012Human Genetics2012,,7:2
14Immunoglobulin G in non-alcoholic steatohepatitis predicts clinical outcome:A prospective multi-centre cohort study显示文摘BACKGROUND Autoimmune markers including plasma cells(PC),anti-smooth-muscle antibody(ASMA),anti-nuclear antibody(ANA),and raised immunoglobulin G(IgG)are commonly observed in non-alcoholic steatohepatitis(NASH),however their clinical significance is unknown.AIM To determine if autoimmune markers in NASH patients are independently associated with poorer clinical outcomes.METHODS Consecutive patients with biopsy proven NASH from Christchurch Hospital,New Zealand and Singapore General Hospital(SGH)were included between 2005 to 2016 in a prospective multi-centre cohort study.Patients with other causes of chronic liver disease were excluded.IgG>14 g/L or globulin fraction>50%,ANA≥1:40,SMA≥1:40 were considered positive.Multivariate analysis was performed to assess which markers were independently associated with mortality and hepatic decompensation.RESULTS Total 261 patients were included of which 201 were from SGH.The median age was 53 and 51.9%were male.Advanced fibrosis was present in 31.4%at diagnosis.PC,ASMA,ANA and raised IgG were observed in 13.1%,4.9%,27.8%and 30.1%of patients respectively.After multivariate analysis,elevated IgG[Hazard Ratio(HR)6.79,95%CI:2.93-17.15]and fibrosis stage(HR 1.37,95%CI:1.03-1.87)were found to be independently associated with increased risk of liver decompensation.Age(HR 1.06,95%CI:1.02-1.10)and elevated IgG(HR 3.79,95%CI:1.90-7.68)were independent factors associated with higher mortality risk.CONCLUSION Elevated IgG,rather than ANA,ASMA or plasma cells,is independently associated with increased risk of hepatic decompensation and mortality in NASH.It could hence be important for prognostication.Marianne Anastasia De Roza Mehul Lamba George Boon-Bee Goh Johnathan Huey-Ming Lum Mark Chang-Chuen Cheah Jing Hieng Jeffrey Ngu 2021World Journal of Gastroenterology2021,27,43:2
15Antiplasmodial and Antioxidant Isoquinoline Alkaloids from Dehaasialongipedicellata显示文摘Azeana Zahari Foo Cheah Jamaludin Mohamad Syazreen Sulaiman Marc Litaudon Kok Leong Khalijah Awang 2014Planta Med2014,,:2
16香蕉胚性细胞悬浮培养方法的改进显示文摘针对香蕉胚性悬浮细胞培养过程中存在的胚性愈伤组织的诱导率低、周期过长、胚性易丢失等问题,以'苹果蕉'及'威廉斯'香蕉的未成熟雄花为试验材料,对香蕉胚性愈伤组织的诱导、悬浮培养的理化条件进行改进。结果表明:(1)光照条件较暗培养更有利于诱导理想的香蕉胚性愈伤组织;(2)M1培养基中加入酪蛋白和脯氨酸有利于胚性愈伤组织的诱导;(3)用微孔板代替三角瓶悬浮培养,有利于悬浮细胞分裂增殖,而且可减少污染的可能。李敬阳 唐粉玲 John S.Hu Wayne Borth Kheng Cheah 谷会 金志强 2012热带作物学报2012,33,5:2
17Valuation techniques for infrastructure investment decisions显示文摘Michael J. Garvin Charles Y. J. Cheah 2004Construction Management and Economics2004,,4:2
18pS2 expression in infiltrating ductal carcinoma of the breast correlates with oestrogen receptor positivity but not with histological grade and lymph node status显示文摘 Azura W W Cheah P L 2001Pathology2001,33,3:1
19Terazosin therapy for chronic prostatitis/chronie pelvic pain syndrome: a randomized,'placebocontrolled trial显示文摘Cheah PY Liong ML Yuen KH 2003Urol2003,169,2:1
20Isolation of Neospora caninum from a calf in Malaysia显示文摘CHEAH T S MATTSSON J G ZAINI M 2004Vet Parasitol2004,126,3:1
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