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Near-infrared spectroscopy in adult cardiac surgery： between conflicting results and unexpected uses

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Journal of Geriatric Cardiology 2017年第11期14卷 659-661页

作者： antonio Nenna Raffaele Barbato Salvatore Matteo Greco Giuseppe Pugliese Mario Lusini Elvio covino Massimo Chello Department of Cardiovascular Surgery Universita Campus Bio-Medico di Roma Rome Italy

Neurological complications after cardiac surgery, rang- ing from permanent stroke to transient dysfunction, repre- sent a key issue in the management of geriatric patients. Many patients aged 70 or more have history of neurological dysfunctions, which increases the risk of complications and sequelae, Severe neurologic diseases, such as strokes, occur in up to 6% of patients undergoing cardiac surgery. Therefore, in the setting of fragile patients, prevention is more important than treatment. There are several intraop- erative mechanisms of neurological injury, such as embo- lism, inflammation, intraoperative anemia,

关键词： Acute kidney injury Aortic valve stenosis Cardiac surgery Cerebral oximetry Near infrared spectroscopy

Heart rate variability： a new tool to predict complications in adult cardiac surgery

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Journal of Geriatric Cardiology 2017年第11期14卷 662-668页

作者： antonio Nenna Mario Lusini Cristiano Spadaccio Francesco Nappi Salvatore Matteo Greco Raffaele Barbato Elvio covino Massimo Chello Department of Cardiovascular Surgery Universitgt Campus Bio-Medico di Roma Rome Italy Department of Cardiac Surgery Golden Jubilee National Hospital Glasgow UK Department of Cardiac Surgery Centre Cardiologique du Nord de Saint-Denis Paris France

Heart rate variability （HRV） refers to the variations between consecutive heartbeats, which depend on the continuous modulation of the sympathetic and parasympathetic branches of the autonomic nervous system. HRV has been shown to be effective as a predictor of risk after myocardial infarction and an early warning sign of diabetic neuropathy, and in the cardiology setting is now recognized to be a useful tool for risk-stratification after hospital admission and after discharge. Recent evidences suggest that HRV analysis might predict complications even in patients undergoing cardiac surgery, and the present review summarizes the importance of HRV analysis in adult cardiac surgery and the perspectives for HRV use in current clinical practice. Although future larger studies are warranted before HRV can be included into daily clinical practice in adult cardiac surgery, HRV is a novel tool which might detect autonomic instability in the early postoperative phase and during hospital stay, thus predicting or prompt-diagnosing many of the post-operative complications.

关键词： Cardiac surgery Complications Heart rate variability Predictive values

Pseudostress-BasedMixed Finite Element Methods for the Stokes Problem in Rn with Dirichlet Boundary Conditions.I:A Priori Error Analysis

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Communications in Computational Physics 2012年第6期12卷 109-134页

作者： gabriel N.Gatica antonio Marquez Manuel A.Sanchez CI2MA and Departamento de Ingenier´ıa Matem´atica Universidad de Concepci´onCasilla 160-CConcepcionChile Departamento de Construcci´on e Ingenier´ıa de Fabricacion Universidad de OviedoOviedoEspa-na.

We consider a non-standard mixed method for the Stokes problem in Rn,n∈{2,3},with Dirichlet boundary conditions,in which,after using the incompressibility condition to eliminate the pressure,the pseudostress tensor s and the velocity vector u become the only ***,we apply the Babuˇska-Brezzi theory to prove the well-posedness of the corresponding continuous and discrete *** particular,we show that Raviart-Thomas elements of order k≥0 for s and piecewise polynomials of degree k for u ensure unique solvability and stability of the associated Galerkin *** addition,we introduce and analyze an augmented approach for our pseudostress-velocity *** methodology employed is based on the introduction of the Galerkin least-squares type terms arising from the constitutive and equilibrium equations,and the Dirichlet boundary condition for the velocity,all of them multiplied by suitable stabilization *** show that these parameters can be chosen so that the resulting augmented variational formulation is defined by a strongly coercive bilinear form,whence the associated Galerkin scheme becomes well posed for any choice of finite element *** instance,Raviart-Thomas elements of order k≥0 for s and continuous piecewise polynomials of degree k+1 for u become a feasible choice in this ***,extensive numerical experiments illustrating the good performance of the methods and comparing them with other procedures available in the literature,are provided.

关键词： Mixed finite element pseudostress incompressible flow

Influence of olive oil and its components on mesenchymal stem cell biology

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World Journal of Stem Cells 2019年第12期11卷 1045-1064页

作者： antonio Casado-Díaz gabriel Dorado Jose Manuel Quesada-Gómez CIBER de Fragilidad y Envejecimiento Saludable(CIBERFES) Instituto Maimónides de Investigación Biomédica de Córdoba(IMIBIC)Hospital Universitario Reina SofíaCórdoba 14004Spain Departement Bioquímica y Biología Molecular Campus Rabanales C6-1-E17Campus de Excelencia Internacional Agroalimentario(ceiA3)Universidad de CórdobaCIBERFESCórdoba 14071Spain Unidad de Gestión Clínica de Endocrinología y Nutrición CIBER de Fragilidad y Envejecimiento Saludable(CIBERFES)Instituto Maimónides de Investigación Biomédica de Córdoba(IMIBIC)Hospital Universitario Reina SofíaCórdoba 14004Spain

Extra virgin olive oil is characterized by its high content of unsaturated fatty acid residues in triglycerides,mainly oleic acid,and the presence of bioactive and antioxidant *** consumption is associated with lower risk of suffering chronic diseases and unwanted processes linked to aging,due to the antioxidant capacity and capability of its components to modulate cellular signaling *** of olive oil can alter the physiology of mesenchymal stem cells(MSCs).This may explain part of the healthy effects of olive oil consumption,such as prevention of unwanted aging *** date,there are no specific studies on the action of olive oil on MSCs,but effects of many components of such food on cell viability and differentiation have been *** objective of this article is to review existing literature on how different compounds of extra virgin olive oil,including residues of fatty acids,vitamins,squalene,triterpenes,pigments and phenols,affect MSC maintenance and differentiation,in order to provide a better understanding of the healthy effects of this ***,most studies have shown a positive effect of these compounds on *** collective findings support the hypothesis that at least part of the beneficial effects of extra virgin olive oil consumption on health may be mediated by its effects on MSCs.

关键词： Olive oil Mesenchymal stem cells Cellular differentiation Aging Cellular niche Mediterranean diet

Impact of COVID-19 in individuals with and without pre-existent digestive disorders with a particular focus on elderly patients

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World Journal of Gastroenterology 2023年第26期29卷 4099-4119页

作者： Alfredo Papa Marcello covino Sara Sofia De Lucia Angelo Del Gaudio Marcello Fiorani Giorgia Polito Carlo Romano Settanni Andrea Piccioni Francesco Franceschi antonio Gasbarrini CEMAD Center for Diagnosis and Treatment of Digestive DiseasesFondazione Policlinico Universitario A.GemelliIRCCSRoma 00168Italy CEMAD UniversitàCattolica del Sacro CuoreRoma 00168Italy Department of Emergency UniversitàCattolica del Sacro Cuore-Fondazione Policlinico Universitario A.GemelliIRCCSRome 00168Italy Emergency Medicine UniversitàCattolica del Sacro CuoreRoma 00168Italy Digestive Disease Center Fondazione Policlinico Universitario A.Gemelli IRCCS-UniversitàCattolica del Sacro CuoreRome 00168Italy Department of Emergency Fondazione Policlinico Universitario A.GemelliIRCCSRoma 00168Italy Department of Emergency UniversitàCattolica del Sacro CuoreRoma 00168Italy

Coronavirus disease 2019(COVID-19)has several extrapulmonary ***(GI)symptoms are among the most frequent clinical manifestations of COVID-19,with severe consequences reported in elderly ***,the impact of COVID-19 on patients with pre-existing digestive diseases still needs to be fully elucidated,particularly in the older *** review aimed to investigate the impact of COVID-19 on the GI tract,liver,and pancreas in individuals with and without previous digestive diseases,with a particular focus on the elderly,highlighting the distinctive characteristics observed in this ***,the effectiveness and adverse events of the anti-COVID-19 vaccination in patients with digestive disorders and the peculiarities found in the elderly are discussed.

关键词： COVID-19 Elderly Inflammatory bowel disease Liver disease Cirrhosis Pancreatic disease

Gastric neuroendocrine tumor: A practical literature review

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World Journal of Gastrointestinal Oncology 2020年第8期12卷 850-856页

作者： gabriel antonio Roberto Carolina Magalhães Britto Rodrigues Renata D’Alpino Peixoto Riad Naim Younes Bachelor Medicine União das Faculdades dos Grandes LagosSão Josédo Rio Preto15030070Brazil Department of Oncology Hospital Alemão Oswaldo CruzSão Paulo 01327001Brazil Universidade Nove de Julho São Paulo 01327001Brazil Department of Thoracic Surgery Hospital Alemão Oswaldo CruzSão Paulo 01327001Brazil

Gastric neuroendocrine tumors are gastric neoplasms originating from enterochromaffin type cells and are inserted in a larger group,named gastroenteropancreatic neuroendocrine *** are considered rare and variable in terms of their clinical,morphological and functional characteristics and may be indolent or *** are classified into types I,II and III,according to their pathophysiology,behavior and *** diagnosis occurs,in most cases,incidentally during upper digestive endoscopies,presenting as simple gastric *** cases(type I and type II)are related to hypergastrinemia,can be multiple and are treated by endoscopic resection,whenever *** use of somatostatin analogs for tumor control may be one of the options for therapy,in addition to total or subtotal gastrectomy for selected *** chemotherapy is only reserved for poorly differentiated neuroendocrine *** rare,gastric neuroendocrine tumors have an increasing incidence over the years,therefore deserving more comprehensive studies on its adequate *** present study reviews and updates management recommendations for gastric neuroendocrine tumors.

关键词： Gastric neuroendocrine tumor Gastroenteropancreatic tumor Hypergastrinemia Gastric carcinoid Endoscopic resection

Minimally invasive surgical techniques in the era of hybrid coronary revascularization： additional benefits for the elderly patients？

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Journal of Geriatric Cardiology 2016年第10期13卷 875-879页

作者： antonio Nenna Mario Lusini Salvatore Matteo Greco Elvio covino Massimo Chello Department of Cardiovuscular Surgery Universita Campus Bio-Medico di Roma Rome Italy

Geriatric patients affected by stable multi-vessel coronary artery disease （CAD） are at the crossroad： they can live with the risks of acute coronary syndrome, malignant arrhythmias or heart failure, or they can un... 详细信息

关键词： Coronary artery disease Hybrid coronary revascularization Minimally invasive surgery Myocardial revascularization

Discovery of higher-order topological insulators using the spin Hall conductivity as a topology signature

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npj Computational Materials 2021年第1期7卷 457-462页

作者： Marcio Costa gabriel R.Schleder Carlos Mera Acosta antonio C.M.Padilha Frank Cerasoli Marco Buongiorno Nardelli Adalberto Fazzio Department of Physics Fluminense Federal UniversityNiteróiRio de JaneiroBrazil Brazilian Nanotechnology National Laboratory(LNNano) CNPEMCampinasBrazil Center for Natural and Human Sciences Federal University of ABCSanto AndréSPBrazil Department of Physics and Department of Chemistry University of North TexasDentonTXUSA

The discovery and realization of topological insulators,a phase of matter which hosts metallic boundary states when the ddimension insulating bulk is confined to(d−1)-dimensions,led to several potential ***,it was shown that protected topological states can manifest in(d−2)-dimensions,such as hinge and corner states for three-and two-dimensional systems,*** nontrivial materials are named higher-order topological insulators(HOTIs).Here we show a connection between spin Hall effect and HOTIs using a combination of ab initio calculations and tight-binding *** model demonstrates how a non-zero bulk midgap spin Hall conductivity(SHC)emerges within the HOTI *** this,we performed high-throughput density functional theory calculations to find unknown HOTIs,using the SHC as a *** calculated the SHC of 693 insulators resulting in seven stable two-dimensional *** work guides novel experimental and theoretical advances towards higher-order topological insulator realization and applications.

关键词： topological insulator conductivity

Foveal thickness reduction after anti-vascular endothelial growth factor treatment in chronic diabetic macular edema

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International Journal of Ophthalmology(English edition) 2017年第5期10卷 760-764页

作者： gabriel Willmann antonio Brunno Nepomuceno Katharina Messias Leticia Barroso Ingrid U.Scott André Messias Rodrigo Jorge Centre for Ophthalmology University of Tübingen Eye Hospital Katharinen Hospital Department of Ophthalmology Ribeirao Preto School of Medicine University of Sao Paulo Departments of Ophthalmology and Public Health Sciences Penn State College of Medicine

AIM：To report foveal thickness reduction in eyes with resolution of macular edema and recovery of a foveal depression after one-year of anti-vascular endothelial growth factor（anti-VEGF） therapy for center-involving diabetic macular edema（DME）.METHODS：Foveal thickness was assessed with optical coherence tomography to determine the central subfield foveal thickness（CSFT） and macular volume in 42 eyes with DME（CSFT〉275 μm）. Evaluations also included measurement of best-corrected visual acuity（BCVA）, and were performed at baseline, and upon foveal depression recovery achieved after 12 monthly intravitreal injections of either 1.5 mg/0.06 mL bevacizumab（n=21） or 0.5 mg/0.05 mL ranibizumab（n=21）. Data was compared to 42 eyes of normally sighted, non-diabetic, healthy individuals with similar age, gender and race ***：Mean baseline BCVA was 0.59±0.04 and 0.32± 0.03 log MAR（P〈0.001） after treatment and resolution of DME, with all, but 3 eyes, showing BCVA improvement. Mean CSFT before treatment was 422.0±20.0 μm, and after treatment, decreased to 241.6±4.6 μm（P〈0.001）, which is significantly thinner than CSFT found in control subjects（272.0±3.4 μm; P〈0.001）. Moreover, in 33/42 DM eyes（79%）, CSTF was thinner than the matched control eye. Macular volume showed comparable results, but with lower differences between groups（control：8.5±0.4 mm^3; DME：8.2±1.0 mm^3; P=0.0267）.CONCLUSION：DME eyes show significantly lower foveal thickness than matched controls after DME resolution achieved with one-year anti-VEGF therapy. Further investigation into the reasonsfor this presumable retinal atrophy using fluorescein angiography and functional parameters as well as establishing possible predictors is warranted. This finding should be considered during the treatment of DME.

关键词： diabetes macular edema bevacizumab ranibizumab optical coherence tomography central subfield foveal thickness diabetic retinopathy