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Resected specimen evaluation,anorectal manometry,endoanal ultrasonography and clinical follow-up after STARR procedures

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World Journal of Gastroenterology 2011年第19期17卷 2411-2416页

作者： Gabriele Naldini guido Cerullo Claudia Menconi Jacopo Martellucci Simone Orlandi Nicola Romano Mauro Rossi Fourth Unit of Surgery Santa Chiara Hospital of Pisa Department of General Surgery University of Siena-Policlinico Le Scotte

AIM:To investigate stapled transanal rectal resection (STARR) procedures as surgical techniques for obstructed defecation syndrome (ODS) by analyzing specimen evaluation,anorectal manometry,endoanal ultrasonography and clinical ***:From January to December 2007,we have treated 30 *** treated with double PPH-01 staplers and 15 treated using new CCS 30 *** specimen were measured with respect to average surface and *** patients have been evaluated at 24 mo with clinical examination,anorectal manometry and endoanal ***:Average surface in the CCS 30 group was 54.5 cm2 statistically different when compared to the STARR group (36.92 cm2).The average volume in the CCS 30 group was 29.8 cc,while in the PPH-01 it was23.8 cc and difference was statistically *** mean hospital stay in the CCS 30 group was 3.1 d,while in the PPH-01 group the median hospital stay was 3.4 *** regards the long-term follow-up,an overall satisfactory rate of 83.3% (25/30) was *** ultrasonography performed 1 year following surgery was considered normal in both of the studied *** resting pressure was higher than the preoperative value (67.2 mmHg in the STARR group and 65.7 mmHg in the CCS30 group vs 54.7 mmHg and 55.3 mmHg,respectively).Resting and squeezing pressures were lower in those patients not satisfied,but data are not statistically ***:The STARR procedure with two PPH-01 is a safe surgical procedure to correct *** new Contour CCS 30 could help to increase the amount of the resected tissue without differences in early complications,post-operative pain and in hospital stay compared to the STARR with two PPH-01 technique.

关键词： Stapled transanal rectal resection Contour CCS Obstructed defecation

A Heterodyne Interferometer with Separated Beam Paths for High-Precision Displacement and Angular Measurements

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Nanomanufacturing and Metrology 2021年第3期4卷 200-207页

作者： guido Straube Juan Sebastian Fischer Calderon Ingo Ortlepp Roland FuBl Eberhard Manske Technische Universitat Ilmenau EhrenbergstraBe 2998693 IlmenauGermany

As standard concepts for precision positioning within a machine reach their limits with increasing measurement volumes,inverse concepts are a promising approach for addressing this *** inverse principle entails other limitations,as for high-precision positioning of a sensor head within a large measurement volume,three four-beam interferometers are required in order to measure all necessary translations and rotations of the sensor head and reconstruct the topography of the reference system consisting of fixed mirrors in the x-,y-,and *** present the principle of a passive heterodyne laser interferometer with consequently separated beam paths for the individual heterodyne *** beam path design is illustrated and described,as well as the design of the signal-processing and evaluation algorithm,which is implemented using a System-On-a-Chip with an integrated FPGA,CPU,and A/D converters.A streamlined bench-top optical assembly was set up and measurements were carried out to investigate the remaining ***,reference measurements with a commercial homodyne interferometer were executed.

关键词： Heterodyne laser interferometer He-Ne laser Optical fiber coupling Beat frequency Non-linearities

Multiple cells of origin in cholangiocarcinoma underlie biological,epidemiological and clinical heterogeneity

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World Journal of Gastrointestinal Oncology 2012年第5期4卷 94-102页

作者： Vincenzo Cardinale guido Carpino Lola Reid Eugenio Gaudio Domenico Alvaro Department of MedicoSurgical Sciences and Biotechnologies Polo PontinoSapienza University of Rome00137 RomeItaly Department of Health Sciences University of Rome "Foro Italico"000135 RomeItaly Department of Anatomical HistologicalForensic Medicine and Orthopedics SciencesSapienza University of Rome000137 RomeItaly Department of Cell and Molecular Physiology Biomedical EngineeringProgram in Molecular Biology and BiotechnologyUNC School of MedicineChapel HillNC 27599United States Eleonora Lorillard Spencer-Cenci Foundation 00156 RomeItaly

Recent histological and molecular characterization of cholangiocarcinoma(CCA) highlights the heterogeneity of this cancer that may emerge at different sites of the biliary tree and with different macroscopic or morphological ***,different stem cell niches have been recently described in the liver and biliarytree,suggesting this as the basis of the heterogeneity of intrahepatic(IH)-and extrahepatic(EH)-CCAs,which are two largely different tumors from both biological and epidemiological points of *** complexity of the organization of the liver stem cell compartments could underlie the CCA clinical-pathological heterogeneity and the criticisms in classifying primitive liver *** recent advances highlight a possible new classification of CCAs based on cells of origin and this responds to the need of generating homogenous diagnostic,prognostic and,hopefully,therapeutic categories of IH-and EH-CCAs.

关键词： Intrahepatic cholangiocarcinoma Extrahepatic cholangiocarcinoma Cholangiocarcinoma classification Cholangiolocarcinoma Cells of origin Cancer stem cells Peribiliary glands Biliary tree stem/progenitor cells Human hepatic stem cells Risk factors Targeted therapies

Can we further optimize therapeutic hypothermia for hypoxic-ischemic encephalopathy?

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Neural Regeneration Research 2019年第10期14卷 1678-1683页

作者： Anthony Davies guido Wassink Laura Bennet Alistair J.Gunn Joanne O.Davidson Department of Physiology The University of Auckland

Perinatal hypoxic-ischemic encephalopathy is a leading cause of neonatal death and *** hypothermia significantly reduces death and major disability associated with hypoxic-ischemic encephalopathy;however,many infants still experience lifelong disabilities to movement,sensation and *** guidelines,based on strong clinical and preclinical evidence,recommend therapeutic hypothermia should be started within 6 hours of birth and continued for a period of 72 hours,with a target brain temperature of 33.5 ±0.5℃ for infants with moderate to severe hypoxic-ischemic *** clinical guidelines also recommend that infants be re warmed at a rate of 0.5℃ per hour,but this is not based on strong *** are no randomized controlled trials investigating the optimal rate of rewarming after therapeutic hypothermia for infants with hypoxic-ischemic *** studies of rewarming are conflicting and results were confounded by treatment with sub-optimal durations of *** this review,we evaluate the evidence for the optimal start time,duration and depth of hypothermia,and whether the rate of rewarming after treatment affects brain injury and neurological outcomes.

关键词： hypoxia-ischemia hypoxic-ischemic encephalopathy therapeutic hypothermia neuroprotection therapeutic strategies randomized controlled trials animal models fetal sheep piglets

Occurrence of Escherichia coli virulence genes in feces of wild birds from Central Italy

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Asian Pacific Journal of Tropical Medicine 2019年第3期12卷 142-146页

作者： Fabrizio Bertelloni Errica Lunardo guido Rocchigiani Renato Ceccherelli Valentina Viginia Ebani Department of Veterinary Science University of Pisa CRUMA-LIPU

Objective: To investigate the potential role of wild birds as fecal spreaders of enteropathogenic,enterohemorrhagic and Shiga-toxins producing Escherichia coli(E. coli),enteropathogenic E. coli,enterohemorrhagic E. coli and Shiga toxin-producing E. coli strains. Methods: Fecal samples collected from 121 wild birds of different orders and species were submitted to molecular analyses. In particular,eaeA encoding intimin,hlyA encoding for hemolysin,stx1 and stx2 genes encoding Shiga-toxins 1 and 2,respectively,were investigated. Results: Overall,21(17.35%) fecal samples resulted positive for at least one of the investigated genes. In detail,12(9.91%) samples were positive for eaeA,10(8.26%) for stx1,4(3.31%) for hylA and 1(0.83%) for stx2. An owl(Athene noctua) positive for the four investigated genes suggesting that it harbored a STEC strain. However,virulence genes characterizing EPEC,and EHEC strains were mainly found among seagulls,waterfowl and feral pigeons. Conclusions: Seagulls,waterfowl and feral pigeons,which frequently reach and contaminate rural,urban and peri-urban areas with their droppings,may be important sources of E. coli infection for other animals and humans.

关键词： Wild birds Enteropathogenic Escherichia coli Enterohemorrhagic Escherichia coli Shiga-toxins producing Escherichia coli

A Comparative Assessment of Aerodynamic Models for Buffeting and Flutter of Long-Span Bridges

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Engineering 2017年第6期3卷 823-838页

作者： Igor Kavrakov guido Morgenthal Research Training Group 1462 Bauhaus-University Weimar Weimar 99423 Germany Chair of Modeling and Simulation of Structures Bauhaus-University Weimar Weimar 99423 Germany

Wind-induced vibrations commonly represent the leading criterion in the design of long-span bridges. The aerodynamic forces in bridge aerodynamics are mainly based on the quasi-steady and linear unsteady theory. This paper aims to investigate different formulations of self-excited and buffeting forces in the time domain by comparing the dynamic response of a multi-span cable-stayed bridge during the critical erection condition. The bridge is selected to represent a typical reference object with a bluff con- crete box girder for large river crossings. The models are viewed from a perspective of model complexity, comparing the influence of the aerodynamic properties implied in the aerodynamic models, such as aerodynamic damping and stiffness, fluid memory in the buffeting and self-excited forces, aerodynamic nonlinearity, and aerodynamic coupling on the bridge response. The selected models are studied for a windspeed range that is typical for the construction stage for two levels of turbulence intensity. Furthermore, a simplified method for the computation of buffeting forces including the aerodynamic admittance is presented, in which rational approximation is avoided. The critical flutter velocities are also compared for the selected models under laminar flow.

关键词： Buffeting FlutterLong-span bridges Bridge aerodynamics Bridge aeroelasticity Erection stage

Interferon-α response in chronic hepatitis B-transfected HepG2.2.15 cells is partially restored by lamivudine treatment

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World Journal of Gastroenterology 2007年第2期13卷 228-235页

作者： Shi-He Guan Mengji Lu Petra Grünewald Michael Roggendorf guido Gerken Joerg F Schlaak Department of Gastroenterology and Hcpatology University Hospital of Esscn Esscn Germany Institute of Virology University Hospital of Essen Essen Germany Department of Laboratory Medicine the first Affiliated Hospital of Anhui Medical University China

AIM：To characterize the IFN-response and its modulation by the antiviral compound lamivudine in HBV- transfected HepG2.2.15 cells. METHODS： HepG2.2.15 and HepG2 cells were stimulated with various concentrations of IFN-α 2a in the presence or absence of lamivudine. Then, total RNA was extracted and analysed by customised cDNA arrays and northern blot for interferon-inducible genes （ISGs）. In addition, cellular proteins were extracted for EMSA and western blot. HBV replication was assessed by southern blot or ELISAs for HBsAg and HBeAg. RESULTS： Two genes （MxA, CigS） with completely abolished and 4 genes （IFITM1, -2, -3, and 6-16） with partially reduced IFN-responses were identified in HepG2.2.15 cells. In 2 genes （IFITM1, 6-16）, the response to IFN-α could be restored by treatment with lamivudine. This effect could not be explained by a direct modulation of the Jak/Stat signalling pathway since EMSA and western blot experiments revealed no suppression of Statl activation and ISGF3 formation after stimulation with IFN-α in HepG2.2.15 compared to HepG2 cells. CONCLUSION： These results are consistent with the assumption that chronic hepatitis B may specifically modulate the cellular response to IFN by a selective blockage of some ISGs. Antiviral treatment with lamivudine may partially restore ISG expressionby reducing HBV gene expression and replication.

关键词： Hepatitis B IFN-α Gene expression Larnivudine

The Geometric Model of Particles (The Origin of Mass and the Electron Spin)

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Journal of High Energy Physics, Gravitation and Cosmology 2023年第4期9卷 941-963页

作者： Giovanni guido External Contact Referent of the EEE Project at the High Scholl “C. Cavalleri” Milano Italy

The geometrization process of physics could involve, in addition to space and time in General Relativity (GR), even elementary particles. Our starting point is the formulation of an original hypothesis about particles, compatible with the basic assumptions of the Standard Model (SM): a massive particle is a geometric structure of a set of elastically coupled quantum oscillators that propagates along a line of a non-massive base field (in impulse eigenstate). We show that the propagation equation of an oscillation associated with the geometric shape representing an electron propagates following Dirac’s wave equation. Thus, one gives a foundation to a geometric model of massive particles (GMP) which would explain the physical origin of the mass, spin, and the magnetic moment of the electron.

关键词： Mass Coupling IQuO Sub-Oscillator Semi-Quantum Spin Moment Electron

The Theoretical Spectrum of Mass of the Light Mesons without Strangeness via the Quarks’ Geometric Model

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Journal of High Energy Physics, Gravitation and Cosmology 2020年第3期6卷 388-415页

作者： Giovanni guido Department of Physics and Mathematics High Scholl “C. Cavalleri” Parabiago Milano Italy

Using the “Aureum Geometric Model” (AGM) of quarks, we formulate the structure equations describing mesons and, by a mathematic procedure, we calculate the theoretical spectrum of mass values of light mesons without... 详细信息

关键词： Quark Structure Equation Geometric Structure Golden Number Massive Coupling Interpenetration IQuO Pion Meson Photon