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| 1 | 时间分辨荧光免疫分析方法检测烟草中菌核净残留显示文摘建立了简便、灵敏地检测烟草中菌核净残留的时间分辨荧光免疫分析方法(TRFIA),及配套的无净化的快速前处理技术。采用镧系元素螯合物Eu-N1标记亲和纯化后的羊抗兔IgG示踪抗体。采用间接竞争TRFIA法建立了菌核净标准抑制曲线,方法的检出限I10为2.0μg/L;抑制终浓度I50为32.00μg/L;检测线性范围为4~128μg/L。考察了丙酮提取后33%,10%和1%的烟草基质对菌核净-TRFIA分析方法的影响,表明在1%烟叶基质条件下,建立的菌核净的抑制曲线的线性范围与标准抑制曲线趋于平行,确定烟草样品的前处理稀释倍数为100倍,计算得到基质影响因子(Im)为17.1。对烟叶样品中添加1,7和24mg/L的菌核净标样,连续3d的添加回收实验表明,方法的回收率为73%~128%,相对标准标准偏差(RSD)在4.3%~13.2%之间;烟草中菌核净的实际最低检出限为1mg/L。本方法可望用于烟草中菌核净残留的快速筛选检测。 | 刘媛 刘蓉蓉 刘贤金 方敦煌 宋春满 Huovinen Tuomas Vehniinen Markus Lvgren Timo | 2012 | 分析化学2012，40，7： | 6 |
| 2 | Femtojoule electro-optic modulation using a silicon– organic hybrid device显示文摘Energy-efficient electro-optic modulators are at the heart of short-reach optical interconnects,and silicon photonics is considered the leading technology for realizing such devices.However,the performance of all-silicon devices is limited by intrinsic material properties.In particular,the absence of linear electro-optic effects in silicon renders the integration of energy-efficient photonic–electronic interfaces challenging.Silicon–organic hybrid(SOH)integration can overcome these limitations by combining nanophotonic silicon waveguides with organic cladding materials,thereby offering the prospect of designing optical properties by molecular engineering.In this paper,we demonstrate an SOH Mach–Zehnder modulator with unprecedented efficiency:the 1-mm-long device consumes only 0.7 fJ bit^(-1) to generate a 12.5 Gbit s^(-1) data stream with a bit-error ratio below the threshold for hard-decision forward-error correction.This power consumption represents the lowest value demonstrated for a non-resonant Mach–Zehnder modulator in any material system.It is enabled by a novel class of organic electro-optic materials that are designed for high chromophore density and enhanced molecular orientation.The device features an electro-optic coefficient of r33<180 pm V^(-1) and can be operated at data rates of up to 40 Gbit s^(-1). | Sebastian Koeber Robert Palmer Matthias Lauermann Wolfgang Heni Delwin L Elder Dietmar Korn Markus Woessner Luca Alloatti Swen Koenig Philipp C Schindler Hui Yu Wim Bogaerts Larry R Dalton Wolfgang Freude Juerg Leuthold Christian Koos | 2015 | Light(Science & Applications)2015，4，1： | 4 |
| 3 | Detection and characterization of murine colitis and carcinogenesis by molecularly targeted contrast-enhanced ultrasound显示文摘AIM To study mucosal addressin cellular adhesion molecule-1(MAd CAM-1) and vascular endothelial growth factor(VEGF)-targeted contrast enhanced ultrasound(CEUS) for the assessment of murine colitis and carcinogenesis. METHODS C57BL/6 mice were challenged with 3% dextran sodium-sulfate(DSS) for three, six or nine days to study the development of acute colitis. Ultrasound was performed with and without the addition of unspecific contrast agents. MAd CAM-1-targeted contrast agent was used to detect and quantify MAd CAM-1 expression. Inflammatory driven colorectal azoxymethane(AOM)/DSS-induced carcinogenesis was examined on day 42 and 84 using VEGF-targeted contrast agent. Highly specific tissue echogenicity was quantified using specialized software. Sonographic findings were correlated to tissue staining, western blot analysis and immunohistochemistry to quantify the degree of inflammation and stage of carcinogenesis. RESULTS Native ultrasound detected increased general bowel wall thickening that correlated with more progressed and more severe DSS-colitis(healthy mice: 0.3 mm ± 0.03 vs six days DSS: 0.5 mm ± 0.2 vs nine days DSS: 0.6 mm ± 0.2, P < 0.05). Moreover, these sonographic findings correlated well with clinical parameters such as weight loss(r2 = 0.74) and histological damage(r2 = 0.86)(P < 0.01). In acute DSS-induced murine colitis, CEUS targeted against MAd CAM-1 detected and differentiated stages of mild, moderate and severe colitis via calculation of mean pixel contrast intensity in decibel(9.6 d B ± 1.6 vs 12.9 d B ± 1.4 vs 18 d B ± 3.33, P < 0.05). Employing the AOM/DSSinduced carcinogenesis model, tumor development was monitored by CEUS targeted against VEGF and detected a significantly increased echogenicity in tumors as compared to adjacent healthy mucosa(healthy mucosa, 1.6 d B ± 1.4 vs 42 d, 18.2 d B ± 3.3 vs 84 d, 18.6 d B ± 4.9, P < 0.01). Tissue echogenicity strongly correlated with histological analysis and immunohistochemistry findings(VEGF-positive cells in 10 high power fields of healthy mucosa: 1 ± 1.2 vs 42 d after DSS start: 2.4 ± 1.6 vs 84 d after DSS start: 3.5 ± 1.3, P < 0.01). CONCLUSION Molecularly targeted CEUS is a highly specific and noninvasive imaging modality, which characterizes murine intestinal inflammation and carcinogenesis in vivo. | Markus Brückner Jan Heidemann Tobias M Nowacki Friederike Cordes Jorg Stypmann Philipp Lenz Faekah Gohar Andreas Lügering Dominik Bettenworth | 2017 | World Journal of Gastroenterology2017，23，16： | 4 |
| 4 | Sodium glucose co-transporter 2 inhibition reduces succinate levels in diabetic mice显示文摘BACKGROUND Type 1 diabetes(T1D) is associated with major chronic microvascular complications which contribute significantly to diabetes associated morbidity.The protein primarily responsible for glucose reabsorption in the kidney is sodium glucose co-transporter 2(SGLT2). Presently, SGLT2 inhibitors are widely used in diabetic patients to improve blood glucose levels and prevent cardiovascular and renal complications. Given the broad therapeutic application of SGLT2 inhibitors, we hypothesised that SGLT2 inhibition may exert its protective effects via alterations of the gut microbiome and tested this in a type 1 diabetic mouse model of diabetic retinopathy.AIM To determine whether the treatment with two independent SGLT2 inhibitors affects gut health in a type 1 diabetic mouse model.METHODS The SGLT2 inhibitors empagliflozin or dapagliflozin(25 mg/kg/d) or vehicle dimethylsulfoxide(DMSO) were administered to C57 BL/6 J, Akita, Kimba and Akimba mice at 10 wk of age for 8 wk via their drinking water. Serum samples were collected and the concentration of succinate and the short chain fatty acid(SCFA) butyric acid was measured using gas chromatography-mass spectrometry. Enzyme-linked immunosorbent assay(ELISA) was performed to determine the concentration of insulin and leptin. Furthermore, the norepinephrine content in kidney tissue was determined using ELISA. Pancreatic tissue was collected and stained with haematoxylin and eosin and analysed using brightfield microscopy.RESULTS Due to the presence of the Akita allele, both Akita and Akimba mice showed a reduction in insulin production compared to C57 BL/6 J and Kimba mice.Furthermore, Akita mice also showed the presence of apoptotic bodies within the pancreatic islets. The acinar cells of Akita and Akimba mice showed swelling which is indicative of acute injury or pancreatitis. After 8 wk of SGLT2 inhibition with dapagliflozin, the intermediate metabolite of gut metabolism known as succinate was significantly reduced in Akimba mice when compared to DMSO treated mice. In addition, empagliflozin resulted in suppression of succinate levels in Akimba mice. The beneficial SCFA known as butyric acid was significantly increased in Akita mice after treatment with dapagliflozin when compared to vehicle treated mice. The norepinephrine content in the kidney was significantly reduced with both dapagliflozin and empagliflozin therapy in Akita mice and was significantly reduced in Akimba mice treated with empagliflozin.In non-diabetic C57 BL/6 J and Kimba mice, serum leptin levels were significantly reduced after dapagliflozin therapy.CONCLUSION The inhibition of SGLT2 reduces the intermediate metabolite succinate, increases SCFA butyric acid levels and reduces norepinephrine content in mouse models of T1 D. Collectively, these improvements may represent an important mechanism underlying the potential benefits of SGLT2 inhibition in T1 D and its complications. | Lakshini Y Herat Natalie C Ward Aaron L Magno Elizabeth P Rakoczy Marcio G Kiuchi Markus P Schlaich Vance B Matthews | 2020 | World Journal of Gastroenterology2020，26，23： | 3 |
| 5 | Minimally invasive versus open oesophagectomy for patients with oesophageal cancer: a multicentre, open-label, randomised controlled trial显示文摘 | Surya SAY Biere Mark I van Berge Henegouwen Kirsten W Maas Luigi Bonavina Camiel Rosman Josep Roig Garcia Suzanne S Gisbertz Jean HG Klinkenbijl Markus W Hollmann Elly SM de Lange H Jaap Bonjer Donald L van der Peet Miguel A Cuesta | 2012 | The Lancet . 2012 (9829)2012，，： | 3 |
| 6 | Long-term outcomes of autoimmune pancreatitis: a multicentre, international analysis显示文摘 | Phil A Hart Terumi Kamisawa William R Brugge Jae Bock Chung Emma L Culver László Czakó Luca Frulloni Vay Liang W Go Thomas M Gress Myung-Hwan Kim Shigeyuki Kawa Kyu Taek Lee Markus M Lerch Wei-Chih Liao Matthias L?hr Kazuichi Okazaki Ji Kon Ryu Nicolas Sc | 2013 | Gut2013，，12： | 2 |
| 7 | Confocal laser endomicroscopy for the differential diagnosis of ulcerative colitis and Crohn’s disease: a pilot study显示文摘 | Gian Tontini Jonas Mudter Michael Vieth Raja Atreya Claudia Günther Yurdagül Zopf Dane Wildner Ralf Kiesslich Maurizio Vecchi Markus Neurath Helmut Neumann | 2014 | Endoscopy2014，，： | 2 |
| 8 | IUPAC collaborative trial study of a method to detect genetically modified soy beans and maize in dried powder显示文摘 | Peter B Klaus P | 1999 | Journal of AOAC International1999，82，4： | 1 |
| 9 | Reduced cerebral blood flow in white matter in ischaemic leukoaraiosis demonstrated using quantitative exogenous contrast based perfusion MRI显示文摘 | Markus H S Lythgoe D J Ostegaard L | 2000 | J Neurol Neurosurg Psychiatry2000，69，1： | 1 |
| 10 | An Algorithm for Automatic Stitching of CR X-ray Images显示文摘 | Markus G Wilfried B Berned L | 2007 | Advances in Medical Engineering2007，，114： | 1 |
| 11 | Toward a 'Critical Mass' theory of interactive media:Universal access, interdependence and diffusion显示文摘 | | 1987 | Communication Research1987，14，5： | 1 |
| 12 | Incorporating a statistically based shape model into a system for computor-assisted anterior cruciate ligament surgery显示文摘 | Markus F St(e)phane L R(e)mi J | 1999 | Medical Image Analysis1999，3，3： | 1 |
| 13 | Controlled-release systems for the insect growth regulator pyriproxyfen显示文摘 | Schwartz L Wolf D Markus A | 2003 | J Agric Food Chem2003，51，20： | 1 |
| 14 | Single-crystal growth and structure determination of misfit layer oxide 显示文摘 | Markus V Martin V Sven L | 2007 | Journal of Crystal Growth2007，306，： | 1 |
| 15 | What makes a virtual organization work显示文摘 | Markus L Manville B Agres C | 2001 | Sloan Management Review2001，，1： | 1 |
| 16 | The experienced 'Sense' of a virtual community: Characteristics and process显示文摘 | Blanchard A L Markus M L | 2004 | The Data Base for Advanced In- formation Systems2004，35，1： | 1 |
| 17 | Recombinant spider silk par- ticles as drug delivery vehicles 显示文摘 | Andreas L Martin S Markus H | 2011 | Biomaterials2011，32，8： | 1 |
| 18 | Relation between maize(Zea mays L1)leaf area and root density observed with minirhizotrons显示文摘 | MARKUS L WALTER R | 2001 | European Journal of Agronomy2001，，15： | 1 |
| 19 | Information technology and organizational change : casual structure in theory and research 显示文摘 | Markus M L Robey D | 1988 | Management Science1988，28，5： | 1 |
| 20 | Electronic mail as the medium og managerial choice显示文摘 | Markus M L | 1994 | Organization Research1994，14，： | 1 |
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