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Irritable bowel syndrome and food interaction

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World Journal of Gastroenterology 2014年第27期20卷 8837-8845页

作者： Rosario Cuomo Paolo reozzi Francesco Paolo Zito Valentina Passananti giovanni De Carlo giovanni sarnelli Department Of Clinical Medicine and Surgery Federico Ⅱ University Hospital School of Medicine

Irritable bowel syndrome(IBS) is one of the most common gastrointestinal disorders in Western countries. Despite the high prevalence of this disorders, the therapeutic management of these patients is often unsatisfactory. A number of factors have been suggested to be involved in the pathogenesis of IBS, including impaired motility and sensitivity, increased permeability, changes in the gut microbiome and alterations in the brain-gut axis. Also food seems to play a critical role: the most of IBS patients report the onset or the exacerbation of their symptoms after the meals. Recently, an increasing attention has been paid to the role of food in IBS. In this review we summarize the most recent evidences about the role of diet on IBS symptoms. A diet restricted in fermentable, poorly absorbed carbohydrates and sugar alcohols has beneficial effects on IBS symptoms. More studies are needed to improve our knowledge about the relationship between food and IBS. However, in the foreseeable future, dietary strategies will represent one of the key tools in the therapeutic management of patients with IBS.

关键词： Irritable bowel syndrome Fermentable,poorly absorbed carbohydrates and sugar alcohols Gut microbiota Food intolerance Gluten

S100B protein in the gut:The evidence for enteroglial-sustained intestinal inflammation

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World Journal of Gastroenterology 2011年第10期17卷 1261-1266页

作者： Carla Cirillo giovanni sarnelli Giuseppe Esposito Fabio Turco Luca Steardo Rosario Cuomo Department of Clinical and Experimental Medicine University of Naples "Federico Ⅱ" Department of Human Physiology and Pharmacology University of Rome "La Sapienza"

Glial cells in the gut represent the morphological and functional equivalent of astrocytes and microglia in the central nervous system （CNS）. In recent years, the role of enteric glial cells （EGCs） has extended from that of simple nutritive support for enteric neurons to that of being pivotal participants in the regulation of inflammatory events in the gut. Similar to the CNS astrocytes, the EGCs physiologically express the SIOOB protein that exerts either trophic or toxic effects depending on its concentration in the extracellular milieu. In the CNS, SIOOB overexpression is responsible for the initiation of a gliotic reaction by the release of pro-inflammatory mediators, which may have a deleterious effect on neighboring cells. SlOOB-mediated pro-inflammatory effects are not limited to the brain： SIOOB overexpression is associated with the onset and maintenance of inflammation in the human gut too. In this review we describe the major features of EGCs and SIOOB protein occurring in intestinal inflammation deriving from such.

关键词： Enteric glial cells Nitric oxide Intestinaldiseases

Pseudopneumoperitoneum in chronic intestinal pseudo-obstruction:A case report

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World Journal of Gastroenterology 2011年第24期17卷 2972-2975页

作者： Luigi Camera Milena Calabrese giovanni sarnelli Margaret Longobardi Alba Rocco Rosario Cuomo Marco Salvatore Department of Bio-morphological and Functional Sciences University "Federico II" Institute of Bioimages and Biostructures National Research Council Department of Clinical and Experimental Medicine Gastroenterology UnitUniversity "Federico II"

Chronic intestinal pseudo-obstruction(CIPO) is a rare disease due to a severe gastrointestinal motility disorder which may mimic,on both clinical and radiological grounds,mechanical *** report a case of a 26-year-old woman who presented to our institution for plain abdominal radiography for referred long-lasting constipation with recurrent episodes of abdominal pain and *** X-ray,performed both in the upright and supine position,an isolated air-fluid level was depicted in the left flank,together with a number of radiological signs suggestive of ***,subphrenic radiolucency could be observed in the upright ***,the intestinal wall of some jejunal loops appeared to be outlined in the right ***,the inferior cardiac border was clearly depicted in the upright *** patient however had no evidence ofperitoneal signs but only hypoactive bowel *** multi-detector computed tomography(MDCT) of the abdomen and pelvis was therefore *** revealed abnormal air-driven distension of the small and large bowel,without evidence of extraluminal *** radiological signs of pneumoperitoneum turned out to be false-positive *** patient was submitted to pan-colonoscopy and to anorectal manometry to rule out Hirshprung's disease,and was finally discharged with a diagnosis of CIPO.

关键词： Pseudopneumoperitoneum Abdominal radi-ography Multi-detector computed tomography Motilitydisorders Chronic intestinal pseudo-obstruction

Diet and functional dyspepsia: Clinical correlates and therapeutic perspectives

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World Journal of Gastroenterology 2020年第5期26卷 456-465页

作者： Marcella Pesce Martina Cargiolli Sara Cassarano Barbara Polese Barbara De Conno Laura Aurino Nicola Mancino giovanni sarnelli Department of Clinical Medicine and Surgery “Federico II”University of NaplesNaples 80131Italy GI Physiology Unit University College London HospitalLondon NW12BUUnited Kingdom

Hypervigilance and symptoms anticipation,visceral hypersensitivity and gastroduodenal sensorimotor abnormalities account for the varied clinical presentation of functional dyspepsia(FD)*** patients recognize meals as the main triggering factor;thus,dietary manipulations often represent the first-line management strategy in this cohort of ***,scarce quality evidence has been produced regarding the relationship between specific foods and/or macronutrients and the onset of FD symptoms,resulting in nonstandardized nutritional *** dietary advises are indeed empirical and often lead to exclusion diets,reinforcing in patients the perception of“being intolerant”to food and self-perpetuating some of the very mechanisms underlying dyspepsia physiopathology(i.e.,hypervigilance and symptom anticipation).Clinicians are often uncertain regarding the contribution of specific foods to dyspepsia physiopathology and dedicated professionals(i.e.,dietitians)are only available in tertiary referral *** in turn,can result in nutritionally unbalanced diets and could even encourage restrictive eating behaviors in severe *** this review,we aim at evaluating the relationship between dietary habits,macronutrients and specific foods in determining FD *** will provide an overview of the evidence-based nutritional approach that should be pursued in these patients,providing clinicians with a valuable tool in standardizing nutritional advises and discouraging patients from engaging into indiscriminate food exclusions.

关键词： Functional dyspepsia Dietary habits Food intolerances Fermentable oligosaccharides,disaccharides,monosaccharides and polyols Gluten-sensitivity Diet

Genetic contribution to motility disorders of the upper gastrointestinal tract

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World Journal of Gastrointestinal Pathophysiology 2013年第4期4卷 65-73页

作者： giovanni sarnelli Alessandra D’Alessandro Marcella Pesce Ilaria Palumbo Rosario Cuomo Gastroenterology Unit Department of Clinical Medicine and SurgeryUniversity of Naples'Federico Ⅱ'

Motility disorders of the upper gastrointestinal tract encompass a wide range of different diseases. Esophageal achalasia and functional dyspepsia are representative disorders of impaired motility of the esophagus and stomach, respectively. In spite of their variable prevalence, what both diseases have in common is poor knowledge of their etiology and pathophysiology. There is some evidence showing that there is a genetic predisposition towards these diseases, especially for achalasia. Many authors have investigated the possible genes involved, stressing the autoimmune or the neurological hypothesis, but there is very little data available. Similarly, studies supporting a post-infective etiology, based on an altered immune response in susceptible individuals, need to be validated. Further association studies can help to explain this complex picture and find new therapeutic targets. The aim of this review is to summarize current knowledge of genetics in motility disorders of the upper gastrointestinal tract, addressing how genetics contributes to the development of achalasia and functional dyspepsia respectively.

关键词： Achalasia Functional dyspepsia Genetic predisposition Hypertrophic pyloric stenosis Motility disorder

Deep learning to develop zero-equation based turbulence model for CFD simulations of the built environment

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Building Simulation 2024年第3期17卷 399-414页

作者： giovanni Calzolari Wei Liu Division of Sustainable Buildings Department of Civil and Architectural EngineeringKTH Royal Institute of TechnologyBrinnelvägen 23Stockholm11428Sweden

This study aims to improve the accuracy and speed of predictions for thermal comfort and air quality in built environments by creating a coupled framework between computational fluid dynamics(CFD)simulations and deep learning *** coupling approach is showcased by the development of a data-driven turbulence *** new turbulence model is built using a deep learning neural network,whose mapping structure is based on a zero-equation turbulence model for built environment simulations,and is coupled with the CFD software OpenFOAM to create a hybrid *** neural network is a standard shallow multi-layer *** number of hidden layers and nodes per layer was optimized using Bayesan optimization *** framework is trained on an indoor environment case study,as well as tested on an indoor office simulation and an outdoor building array *** show that the deep learning based turbulence model is more robust and faster than traditional two-equation Reynolds average Navier-Stokes(RANS)turbulence models,while maintaining a similar level of *** model also outperforms the standard algebraic zero-equation model due to its superior ability to generalize to various flow *** some challenges,namely the mapping constraint,the limited training dataset size and the source of generation of training data,the hybrid framework demonstrates the viability of the coupling technique and serves as a starting point for future development of more reliable and advanced models.

关键词： neural networks computational fluid dynamics(CFD) turbulence model OpenFOAM

AC ripple on DC voltage:Experimental and theoretical investigation of the impact on accelerated ageing in electrical insulation

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High Voltage 2024年第4期9卷 902-910页

作者： giovanni Gardan Gian Carlo Montanari Dipartimento di Ingegneria Industriale Universita degli Studi di PadovaPadovaItaly Center for Advanced Power Systems Florida State UniversityTallahasseeFloridaUSA

With the increasing penetration of DC systems into the high voltage and medium voltage power industry,DC voltage is becoming common for distribution/transmission and to supply different typologies of *** allowable extent of AC ripple superimposed to DC,and its effect on insulation ageing,is a long-term discussed *** most harmful phenomenon causing extrinsic ageing acceleration and insulation system premature failure is partial discharges(PD);thus,the risk of incepting PD due to AC ripple could become a primary issue for electrical asset equipment *** this work,the impact of AC sinusoidal ripple on insulation system life and reliability is dealt with,considering both intrinsic and extrinsic ageing but focusing on the latter,that is,the PD *** are performed to assess how the jump voltage(due to AC ripple)and the DC component impact on PD activity in terms of amplitude and repetition *** the first time,the correlation between the magnitude of jump voltage associated with ripple and PD inception is established,shedding a light on the allowable ripple extent which does not impact significantly on ageing and premature insulation *** approach can provide straightforward tools for design specification and ageing inference of insulation systems.

关键词： impact insulation electrical

Good adherence to mediterranean diet can prevent gastrointestinal symptoms:A survey from Southern Italy

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2016年第4期7卷 564-571页

作者： Francesco Paolo Zito Barbara Polese Letizia Vozzella Antonietta Gala Daniela Genovese Viviana Verlezza Fabiana Medugno Antonello Santini Luigi Barrea Martina Cargiolli Paolo Andreozzi giovanni sarnelli Rosario Cuomo Department of Surgery Gastroenterology and EndocrinologyUniversity of Naples "Federico Ⅱ" Department of Pharmacy University of Naples "Federico Ⅱ" IOS s.r.l and COLEMAN S.p.A.

AIMTo evaluate how different levels of adherence to a mediterranean diet (MD) correlate with the onset of functional gastrointestinal disorders. METHODSAs many as 1134 subjects (598 M and 536 F; age range 17-83 years) were prospectively investigated in relation to their dietary habits and the presence of functional gastrointestinal symptoms. Patients with relevant chronic organic disease were excluded from the study. The Mediterranean Diet Quality index for children and adolescents (KIDMED) and the Short Mediterranean Diet Questionnaire were administered. All subjects were grouped into five categories according to their ages: 17-24 years; 25-34; 35-49; 50-64; above 64. RESULTSOn the basis of the Rome III criteria, our population consisted of 719 (63.4%) individuals who did not meet the criteria for any functional disorder and were classified as controls (CNT), 172 (13.3%) patients meeting criteria for prevalent irritable bowel syndrome (IBS), and 243 (23.3%) meeting criteria for prevalent functional dyspepsia (FD). A significantly lower adherence score in IBS (0.57 ± 0.23, P P P P P P P P P CONCLUSIONLow adherence to MD may trigger functional gastrointestinal symptoms, mainly in younger subjects. Moreover, with increasing age, patients tend to adopt dietary regimens closer to MD.

关键词： Mediterranean diet Irritable bowel syndrome Dietary regimen Functional gastro-intestinal disorders Functional dyspepsia

Experimental evaluation of mechanical compression of lattice trusses made with Ti6Al4V for aerospace use

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Chinese Journal of Aeronautics 2024年第5期37卷 520-532页

作者： Carlo giovanni FERRO Sara VARETTI Paolo MAGGIORE Department of Mechanical and Aerospace Engineering Politecnico di TorinoCorso Duca degli AbruzziTorino 10124Italy

Lattice structures are three-dimensional structures composed of repeated geometrical shapes with multiple interconnected nodes,providing high strength-to-weight ratios,customizable properties,and efficient use of materials.A smart use of materials leads to reduced fuel consumption and lower operating costs,making them highly desirable for aircraft ***,the customizable properties of lattice structures allow for tailoring to specific design requirements,leading to improved performance and safety for *** advantages make lattice structures an important focus for research and development in the aviation *** paper presents an experimental evaluation of the mechanical compression properties of lattice trusses made with Ti6Al4V,designed for use in an anti-ice *** truss structures were manufactured using additive manufacturing techniques and tested under compressive loads to determine mechanical *** showed that lattice trusses exhibited high levels of compressive strength,making them suitable for use in applications where mechanical resistance and durability are critical,such as in anti-ice *** also highlight the potential of additive manufacturing techniques for the fabrication of lattice trusses with tailored mechanical *** study provides valuable insights into the mechanical behavior of Ti6Al4V lattice trusses and their potential applications in anti-ice systems,as well as other areas where high strength-to-weight ratios are *** results of this research contribute to the development of lightweight,efficient,and durable anti-ice systems for use in aviation and other industries.

关键词： Additive Manufacturing(AM) Selective Laser Sintering(SLM) Anti ice systems Lattice structures Aircraft on board systems Design of Experiments(DOE)