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| 1 | HEDGEHOG-GLI1 signaling regulates human glioma growth, cancer stem cell self-renewal, and tumorigenicity显示文摘 | Clement V Sanchez P de Tribolet N Radovanovic I Ruiz i Altaba A | 2007 | 中国神经肿瘤杂志2007,5,2: | 96 |
| 2 | 温度对美拉德反应的研究(英文)显示文摘本文报道了反应温度对以d-葡萄糖和l-甘氨酸水溶液模式体系美拉德反应的影响。研究了在不同反应温度(80、100、120℃)和不同反应时间下,体系中糖和氨基酸的降解程度,反应中间体:阿利德诺和有机酸的累积程度,类黑素的形成及pH变化程度。研究结果表明:随着反应温度和反应时间的增加,反应速率加快。 | 吴少雄 M A J S van Boeke S I F S Martins 郭祀远 李琳 | 2005 | 食品科学2005,26,7: | 54 |
| 3 | 川东北地区构造-热演化探讨--来自(U-Th)/He年龄和Ro的约束显示文摘利用镜质组反射率和磷灰石与锆石的(U-Th)/He年龄一起模拟了川东北地区三叠纪以来的构造-热演化特征。结果表明早三叠世的热流值在51~66mW/m2,自晚三叠世至白垩纪随盆地性质由前陆盆地演化为陆内坳陷盆地,热流缓慢降低直至现今的44.5mW/m2。但在晚白垩世—古新世时期受燕山晚期构造运动的影响,热流有一个微弱增高的现象。同时,磷灰石和锆石的He年龄揭示了川东北地区大致在晚白垩世期间开始隆升且抬升剥蚀量较大。因此,磷灰石和锆石的(U-Th)/He年龄可以揭示后期详细的冷却历史。 | 邱楠生 秦建中 Brent I A Mclnnes 王杰 腾格尔 郑伦举 | 2008 | 高校地质学报2008,14,2: | 59 |
| 4 | Diagnosis of hepatocellular carcinoma显示文摘Hepatocellular carcinoma (HCC) is one of the commonest cancers worldwide, particularly in parts of the developing world, and is increasing in incidence. This article reviews the current modalities employed for the diagnosis of HCC, including serum markers, radiological techniques and histological evaluation, and summarises international guidelines for the diagnostic approach to HCC. | Asmaa I Gomaa Shahid A Khan Edward LS Leen Imam Waked Simon D Taylor-Robinson | 2009 | World Journal of Gastroenterology2009,15,11: | 44 |
| 5 | 铝、镁轻合金中的稀土显示文摘综述了稀土镁和稀土铝合金的晶体化学、热力学和相图数据,根据其应用前景特别注意了富镁、富铝稀土合金及添加稀土对合金性能的影响,报道了若干稀土镁、稀土铝及含两个不同稀土的镁、铝合金的研究结果。对富镁、富铝的二元和三元合金相的结晶化学及形成规律进行了总结和讨论,并对有确定结构的合金精细设计和可能的应用提出了建议。 | Ferro R, Saccone A, Borzone G( Division of General and Inorganic Chemistry and Metallurgy Department of Chemistry, University of Genova, Dodecaneso 31,I 16146 Genova, Italy ) | 1997 | 中国稀土学报1997,15,3: | 36 |
| 6 | Nat Methods:新型计算方法或能更加精准地分析基因表达状况显示文摘日前,一项刊登在国际杂志NaCre Methods上的研究报告中,来自美国卡内基梅隆大学等机构的研究人员通过研究开发了一种新型的计算方法,该方法能够有效改善对基因表达分析的准确性。研究人员或有望利用该方法来诊断并且监测癌症。同时或许也能够促进基础生物学的研究进展。 | Rob Patro Geet Duggal Michael I Love Rafael A Irizarry Michael I Love Rafael A Irizarry Carl Kingsford | 2017 | 现代生物医学进展2017,17,11: | 30 |
| 7 | 血管瘤联盟:脑海绵状血管畸形临床管理指南2017显示文摘2017年5月,血管瘤联盟科学顾问委员会临床专家小组(Angioma Alliance Scientific Advisory Board Clinical Experts Panel)在Neurosurgery杂志上发布了《脑海绵状血管畸形临床管理指南》,现在摘录如下。1基因测定和咨询首次脑海绵状血管畸形(cerebral cavernous malformations,CCM)时, | 杨中华 AKERS A AL-SHAHI SALMAN R A AWAD I | 2017 | 中国卒中杂志2017,12,8: | 28 |
| 8 | 成人、儿童及孕妇特发性血小板减少性紫癜诊治指南显示文摘特发性血小板减少性紫癜(ITP)是一种自体免疫性疾病,以持续性血小板减少为特征(血小板<150×109/L).其发病机理是自身抗体与血小板抗原结合导致它们在未成熟时即被网状内皮系统,特别是在脾脏中被破坏引起血小板减少. | Provan D Newland A Norfolk D Bolton-Maggs P Lilleyman J Greer I May A Murphy M Ouwehand W Watson S 李振宇 徐开林 | 2004 | 国外医学(输血及血液学分册)2004,27,4: | 25 |
| 9 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999,12,5: | 22 |
| 10 | 黄独中的黄酮和蒽醌类化学成分的研究显示文摘目的 :对黄独块茎中的黄酮及蒽醌类色素成分进行研究。方法 :柱色谱进行分离 ,UV ,IR ,MS ,1HNMR及13 CNMR等光谱技术鉴定化合物的结构。结果 :得到 2个黄酮化合物和 1个蒽醌成分。鉴定为 3,7 二甲氧基 5 ,4′ 二羟基黄酮、3,7 二甲氧基 5 ,3′ ,4′ 三羟基黄酮和大黄素。结论 :均为首次从该植物中分离得到。 | 李石生 Iliya I A 邓京振 赵守训 | 2000 | 中国中药杂志2000,25,3: | 23 |
| 11 | Role of IL-10 and TGF-β1 in local immunosuppression in HPV-associated cervical neoplasia显示文摘Cervical cancer is a worldwide disease that constitutes a significant public health problem, especially in developing countries, not only due to its high incidence but also because the most affected population comprises women who belong to marginalized socio-economic classes. Clinical and molecular research has identified immunological impairment in squamous intraepithelial cervical lesions and cervical cancer patients. Human Papillomavirus(HPV) has several mechanisms for avoiding the immune system: it down-regulates the expression of interferon and upregulates interleukin(IL)-10and transforming growth factor(TGF)-β1 to produce a local immunosuppressive environment, which, along with altered tumor surface antigens, forms an immunosuppressive network that inhibits the antitumor immune response. In this review we analyzed the available data on several deregulated cellular immune functions in patients with NIC Ⅰ, NIC Ⅱ and NIC Ⅲ and cervical cancer. The effects of immunosuppressive cytokines on innate immune response, T-cell activation and cellular factors that promote tumor cell proliferation in cervical cancer patients are summarized. We discuss the functional consequences of HPV E2, E6, and E7 protein interactions with IL-10 and TGF-β1 promoters in the induction of these cytokines and postulate its effect on the cellular immune response in squamous intraepithelial cervical lesions and cervical cancer patients. This review provides a comprehensive picture of the immunological functions of IL-10 and TGF-β1 in response to HPV in humans. | Kirvis Torres-Poveda Margarita Bahena-Román Claudia Madrid-González Ana I Burguete-García Víctor Hugo Bermúdez-Morales Oscar Peralta-Zaragoza Vicente Madrid-Marina | 2014 | World Journal of Clinical Oncology2014,5,4: | 21 |
| 12 | 广东龙窝花岗闪长质岩体的年代学、地球化学及岩石成因显示文摘龙窝岩体是南岭地区燕山早期具幔源组分贡献的花岗岩的典型代表,其主体岩性为花岗闪长岩,岩体中含有深色闪长质包体,锆石ELA-ICP-MS定年结果表明花岗闪长岩的形成年龄为169.1±2.5Ma,属中侏罗世岩浆活动的产物。地球化学特征上,该岩体铝弱过饱和(A/NKC=1.0~1.1),相对贫碱,富钾(K_2O/Na_2O=1.15~1.45),富轻稀土和大离子亲石元素(如Rb、Cs、Th、U),贫高场强元素(如Nb、Ti)。闪长质包体具有与寄主岩相似的矿物组合,但铁镁矿物含量及过渡族元素(V、CR、Co、Ni)丰度相对偏高,二者的主量和微量元素表现出混合成因的演化趋势。寄主岩与包体具有相近的Sr、Nd同位素组成,I_(Sr)和ε_(Nd)(t)值分别为0.70843~0.70995、-6.53~-8.89和0.70797~0.70882、-4.71~-9.24,均表现出壳幔混源花岗岩类岩石的特点。二元混合模拟计算显示寄主岩与包体成岩过程中地幔物质的混入比例分别为32.9%~40.4%和 31.8%~46.4%。通过对岩石产出构造背景及地质地球化学特征的综合分析,表明龙窝花岗闪长岩及其中的闪长质包体是在伸展-引张环境下,由幔源基性岩浆及其诱发的壳源长英质岩浆混合作用的产物。 | 邱检生 胡建 McInnes B I A 蒋少涌 徐夕生 Allen C M | 2004 | 岩石学报2004,20,6: | 19 |
| 13 | 高血压患者脑小血管病变化对认知功能的影响显示文摘高血压是脑小血管病进展与认知功能障碍的主要危险因素之一。该研究旨在探讨高血压患者脑小血管病损伤变化与认知功能减退及轻度认知功能障碍的关系。该研究的数据从ISSYS队列(探讨高血压无症状性脑卒中:一个磁共振成像研究)中获得,其是一项纵向人群研究,纳入基线无痴呆及脑卒中,年龄50~70岁的高血压患者。 | Jiménez-Balado J Riba-Llena I Abril O Garde E Penalba A Ostos E Maisterra O Montaner J Noviembre M Mundet X Ventura O Pizarro J Delgado P 赵狄 练桂丽 | 2019 | 中华高血压杂志2019,27,2: | 15 |
| 14 | A study of pulmonary embolism after abdominal surgery in patients undergoing prophylaxis显示文摘AIM:To determine risk factors for pulmonary embolism and estimate effects and benefits of prophylaxis.METHODS:We included 78 patients who died subsequently to a pulmonary embolism after major abdomi nal surgery from 1985 to 2003.A first,retrospective analysis involved 41 patients who underwent elective surgery between 1985 and 1990 without receiving any prophylaxis.In the prospectively evaluated subgroup,37 patients undergoing major surgery between 1991 and 2003 were enrolled:all of them had received a prophylaxis consisting in low-molecular weight heparin,given subcutaneously at a dose of 2850 IU AXa/0.3 mL(body weight < 50 kg) or 5700 IU AXa/0.6 mL(body weight ≥ 50 kg).RESULTS:A higher incidence of thromboembolism(43.9% and 46.34% in the two groups,respectively) was found in older patients(> 60 years).The incidence of pulmonary embolism after major abdominal surgery in patients who had received the prophylaxis was signifi cantly lower compared to the subjects with the same condition who had not received any prophylaxis(P < 0.001,OR = 2.825;95% CI,1.811-4.408).Furthermore,the incidence of pulmonary embolism after colorectal cancer surgery was signifi cantly higher compared to incidence of pulmonary embolism after other abdominal surgical procedures.Finally,the incidence of pulmonary embolism after colorectal cancer surgery among the patients who had received the prophylaxis(11/4316,0.26%) was significantly lower compared to subjects undergoing a surgical procedure for the same indication but without prophylaxis(10/1562,0.64%)(P < 0.05,OR = 2.522;95% CI,1.069-5.949).CONCLUSION:Prophylaxis with low molecular weight heparin is highly recommended during the preoperative period in patients with diagnosis of colorectal cancer due to high risk of pulmonary embolism after elective surgery. | Mirko D Kerkez Dorde M ulafi Dragana D Mija Vitomir I Rankovi Nebja S Leki Dejan Z Stefanovi | 2009 | World Journal of Gastroenterology2009,15,3: | 14 |
| 15 | Differential control of growth,apoptotic activity and gene expression in human colon cancer cells by extracts derived from medicinal herbs,Rhazya stricta and Zingiber officinale and their combination显示文摘AIM:To investigate the effects of extracts from Rhazya stricta(R.stricta) and Zingiber officinale(Z.officinale) on human colorectal cancer cells.METHODS:Human colorectal cancer cells(HCT116) were subjected to increasing doses of crude alkaloid extracts from R.stricta(CAERS) and crude flavonoid extracts from Z.officinale(CFEZO).Cells were then harvested after 24,48 or 72 h and cell viability was examined by trypan blue exclusion dye test; clonogenicity and soft agar colony-forming assays were also carried out.Nuclear stain(Hoechst 33342),acridine orange/ethidium bromide double staining,agarose gel electrophoresis and comet assays were performed to assess pro-apoptotic potentiality of the extracts.Quantitative reverse transcription-polymerase chain reaction(qRT-PCR),using gene-specific primers and Western blot analyses were performed to assess the impact of CAERS and CFEZO on the expression levels of key regulatory proteins in HCT116 cells.RESULTS:Treatment with a combination of CAERS and CFEZO synergistically suppressed the proliferation,colony formation and anchorage-independent growth of HCT116 cells.Calculated IC50,after 24,48 and 72 h,were 70,90 and 130 μg/mL for CAERS,65,85 and 120 μg/mL for CFEZO and 20,25 and 45 μg/mL for both agents,respectively.CAERS- and CFEZO-treated cells exhibited morphologic and biochemical features of apoptotic cell death.The induction of apoptosis was associated with the release of mitochondrial cytochrome c,an increase in the Bax/Bcl-2 ratio,activation of caspases 3 and 9 and cleavage of poly ADP-ribose polymerase.CAERS and CFEZO treatments downregulated expression levels of anti-apoptotic proteins including Bcl-2,Bcl-X,Mcl-1,survivin and XIAP,and upregulated expression levels of proapoptotic proteins such as Bad and Noxa.CAERS and CFEZO treatments elevated expression levels of the oncosuppressor proteins,p53,p21 and p27,and reduced levels of the oncoproteins,cyclin D1,cyclin/cyclin-dependent kinase-4 and c-Myc.CONCLUSION:These data suggest that a combination of CAERS and CFEZO is a promising treatment for the prevention of colon cancer. | Ayman I Elkady Rania Abd El Hamid Hussein Osama A Abu-Zinadah | 2014 | World Journal of Gastroenterology2014,20,41: | 12 |
| 16 | 非胰岛素依赖型糖尿病冠状动脉疾病的危险因素:英国糖尿病前瞻性研究(UKPDS:23)显示文摘目的:评价2型糖尿病患者冠状动脉疾病的基线危险因素。设计:对2 693例资料完整的患者进行年龄和性别调整的逐步选择过程分析,以确定哪些冠状动脉疾病的危险因素应纳入 Cox 比例风险模型。对象:3 055例白人患者,平均年龄52岁,均新近诊断为2型糖尿病,且无动脉粥样硬化相关疾病的证据。平均随访期7.9年。335例患者于10年内出现冠状动脉疾病。结局评定:具有明确异常心电图的心绞痛、致死或非致死性心肌梗塞。结果:冠状动脉疾病与低密度脂蛋白胆固醇浓度升高、高密度脂蛋白胆固醇浓度降低、甘油三酯浓度升高、高血红蛋白 A_(1c)、高收缩压、高空腹血糖以及吸烟史密切相关。低密度脂蛋白胆固醇较高1/3对较低1/3区间的估计风险比为2.26(95%可信区间为1.70~3.00),高密度脂蛋白胆固醇为0.55(0.41~0.73),血红蛋白 A_(1c)为1.52(1.15~2.01),收缩压为1.82(1.34~2.47)。吸烟者的估计风险比为1.41(1.06~1.88)。结论:2型糖尿病患者中,存在冠状动脉疾病潜在的、可变的5种危险因素的交叉重叠影响。它们是低密度脂蛋白胆固醇浓度升高、高密度脂蛋白胆固醇浓度降低、高血压、高血糖和吸烟。 | R C Turner H Millns H A W Neil I M Stratton S E Manley D R Matthews R R Holman 赵维纲 | 1998 | 英国医学杂志中文版1998,0,3: | 11 |
| 17 | Minimal criteria for defining multipotent mesenchymal stromal cells. The International Society for Cellular Therapy position statement显示文摘 | M Dominici K Le Blanc I Mueller I Slaper-Cortenbach Fc Marini Ds Krause Rj Deans A Keating Dj Prockop Em Horwitz | 2006 | Cytotherapy2006,,4: | 11 |
| 18 | Predictive value of multi-detector computed tomography for accurate diagnosis of serous cystadenoma:Radiologic-pathologic correlation显示文摘AIM:To identify multi-detector computed tomography(MDCT) features most predictive of serous cystadenomas(SCAs),correlating with histopathology,and to study the impact of cyst size and MDCT technique on reader performance.METHODS:The MDCT scans of 164 patients with surgically verified pancreatic cystic lesions were reviewed by two readers to study the predictive value of various morphological features for establishing a diagnosis of SCAs.Accuracy in lesion characterization and reader conf idence were correlated with lesion size(≤3cm or≥3cm) and scanning protocols(dedicated vs routine).RESULTS:28/164 cysts(mean size,39 mm;range,8-92mm) were diagnosed as SCA on pathology.The MDCT features predictive of diagnosis of SCA were microcystic appearance(22/28,78.6%),surface lobulations(25/28,89.3%) and central scar(9/28,32.4%).Stepwise logistic regression analysis showed that only microcystic appearance was signifi cant for CT diagnosis of SCA(P=0.0001).The sensitivity,specificity and PPV of central scar and of combined microcystic appearance and lobulations were 32.4%/100%/100% and 68%/100%/100%,respectively.The reader confidence was higher for lesions>3cm(P=0.02) and for MDCT scans performed using thin collimation(1.25-2.5mm) compared to routine 5 mm collimation exams(P>0.05).CONCLUSION:Central scar on MDCT is diagnostic of SCA but is seen in only one third of SCAs.Microcystic morphology is the most significant CT feature in diagnosis of SCA.A combination of microcystic appearance and surface lobulations offers accuracy comparable to central scar with higher sensitivity. | Anjuli A Shah Nisha I Sainani Avinash Kambadakone Ramesh Zarine K Shah Vikram Deshpande Peter F Hahn Dushyant V Sahani | 2009 | World Journal of Gastroenterology2009,15,22: | 11 |
| 19 | Diabetes mellitus and hypothyroidism: Strange bedfellows or mutual companions?显示文摘Clinicians should be cognizant of the close relationship that exists between two of the most common endocrine disorders, primary hypothyroidism and diabetes mellitus. This applies to patients with both type 1 and type 2 diabetes mellitus(T1DM and T2 DM respectively). However, the association is greater in T1 DM, probably because of the shared autoimmune predisposition. In patients with T2 DM, the relationship is somewhat weaker and the explanation less clear-cut. Factors such as dietary iodine deficiency, metformin-induced thyroid stimulating hormone suppression and poor glycemic control may all be implicated. Further translational research is required for greater clarification. Biochemical screening for abnormal thyroid function in individuals who have diabetes is warranted, particularly in females with T1 DM, and therapy with L-thyroxine appropriately instituted if hypothyroidism is confirmed. | Barry I Joffe Larry A Distiller | 2014 | World Journal of Diabetes2014,5,6: | 11 |
| 20 | Real time endoscopic ultrasound elastography and strain ratio in the diagnosis of solid pancreatic lesions显示文摘AIM To evaluate the accuracy of the elastography score combined to the strain ratio in the diagnosis of solid pancreatic lesions(SPL). METHODS A total of 172 patients with SPL identified by endoscopic ultrasound were enrolled in the study to evaluate the efficacy of elastography and strain ratio in differentiating malignant from benign lesions. The semi quantitative score of elastography was represented by the strain ratio method. Two areas were selected, area(A) representing the region of interest and area(B) representing the normal area. Area(B) was then divided by area(A). Sensitivity, specificity, positive predictive value(PPV), negative predictive value(NPV), and accuracy were calculated by comparing diagnoses made by elastography, strain ratio and final diagnoses.RESULTS SPL were shown to be benign in 49 patients and malignant in 123 patients. Elastography alone had a sensitivity of 99%, a specificity of 63%, and an accuracy of 88%, a PPV of 87% and an NPV of 96%. The best cut-off level of strain ratio to obtain the maximal area under the curve was 7.8 with a sensitivity of 92%, specificity of 77%, PPV of 91%, NPV of 80% and an accuracy of 88%. Another estimated cut off strain ratio level of 3.8 had a higher sensitivity of 99% and NPV of 96%, but with less specificity, PPV and accuracy 53%, 84% and 86%, respectively. Adding both elastography to strain ratio resulted in a sensitivity of 98%, specificity of 77%, PPV of 91%, NPV of 95% and accuracy of 92% for the diagnosis of SPL. CONCLUSION Combining elastography to strain ratio increases the accuracy of the differentiation of benign from malignant SPL. | Hussein Okasha Shaimaa Elkholy Ramy El-Sayed Mohamed-Naguib Wifi Mohamed El-Nady Walid El-Nabawi Waleed A El-Dayem Mohamed I Radwan Ali Farag Yahya El-sherif Emad Al-Gemeie Ahmed Salman Mohamed El-Sherbiny Ahmed El-Mazny Reem E Mahdy | 2017 | World Journal of Gastroenterology2017,23,32: | 11 |