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The association of layperson characteristics with the quality of simulated cardiopulmonary resuscitation performance

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World Journal of Emergency Medicine 2017年第1期8卷 12-18页

作者： Marion Leary David G.BucMer Daniel J.Ikeda daiane a.saraiva Robert A.Berg Vinay M.Nadkarni Audrey L.Blewer Benjamin S.Abella Center for Resuscitation Science and Department of Emergency Medicine Department of Emergency MedicinePerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA School of Nursing University of PennsylvaniaPhiladelphiaPennsylvaniaUSA Children's Hospital of Philadelphia PhiladelphiaPennsylvaniaUSA

BACKGROUND: Few studies have examined the association of layperson characteristics with cardiopulmonary resuscitation(CPR) provision. Previous studies suggested provider characteristics, including age and gender, were associated with CPR quality, particularly chest compression(CC) depth. We sought to determine the association of subject characteristics, including age and gender with layperson CPR quality during an unannounced simulated CPR event. We hypothesized shallower CC depth in females, and older-aged ***: As part of a larger multicenter randomized controlled trial of CPR training for cardiac patients' caregivers, CPR skills were assessed 6 months after training. We analyzed associations between subject characteristics and CC rate, CC depth and no-? ow time. Each variable was analyzed independently; signi? cant predictors determined via univariate analysis were assessed in a multivariate regression ***: A total of 521 laypersons completed a 6-month CPR skills assessment and were included in the analysis. Mean age was 51.8±13.7 years, 75% were female, 57% were Caucasian. Overall, mean CC rate was 88.5±25.0 per minute, CC depth was 50.9±2.0 mm, and mean no-flow time was 15.9±2.7 sec/min. CC depth decreased signi? cantly in subjects >62 years(P62 years and female gender are associated with shallower CC depth.

关键词： Cardiac arrest Cardiopulmonary resuscitation Bystander CPR quality Layperson Demographics

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Early-onset colorectal cancer:A review of current knowledge

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World Journal of Gastroenterology 2023年第8期29卷 1289-1303页

作者： Margarida R saraiva Isadora Rosa Isabel Claro Department of Gastroenterology Instituto Português de Oncologia de Lisboa Francisco GentilLisboa 1099-023Portugal

Colorectal cancer(CRC)is one of the most prevalent malignancies *** most prevalent among older people,its incidence above 50 years old has been decreasing globally in the last decades,probably as a result of better ***,its incidence in patients below 50 years old[early-onset CRC(EO-CRC)]has been increasing,for reasons not yet fully ***’s increasing incidence is genre independent but shows racial disparities and has been described to occur *** follows a birth-cohort effect which probably reflects a change in exposure to CRC risk *** incidence is predicted to double until 2030,which makes EO-CRC a serious public health *** modifiable and non-modifiable risk factors have been identified-some are potential targets for preventive ***-CRC is often diagnosed at advanced stages and histological features associated with poor prognosis have been ***-CRC presents some distinctive features:Microsatellite instability is common,but another subtype of tumours,both microsatellite and chromosome stable also seems *** are no age-specific treatment protocols and studies on EO-CRC survival rates have shown conflicting *** to the higher germline pathological mutations found in EO-CRC patients,an accurate genetic risk evaluation should be *** this review,we summarize the current evidence on epidemiological,clinical,histopathological and molecular features of EO-CRC and discuss the contribution of genetics and lifestyle risk *** further comment on screening strategies and specific dimensions to consider when dealing with a younger cancer patient.

关键词： Colorectal cancer Early-onset Adenocarcinoma Hereditary Birth-cohort effect Risk factors

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Species-specific biomass allometric models and expansion factors for indigenous and planted forests of the Mozambique highlands

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Journal of Forestry Research 2021年第3期32卷 1047-1065页

作者： Tarquinio Mateus Magalhaes Victoria Norberto Cossa Benard Soares Guedes Amélia.saraiva Monguela Fanheiro Departamento de Engenharia Florestal Faculdade de Agronomia e Engenharia FlorestalUniversidade Eduardo MondlaneCampus UniversitárioEdifício no.1257MaputoRepública de Mocambique Departamento de Sociologia Rural Escola Superior de Desenvolvimento RuralUniversidade Eduardo MondlaneVilankuloRepública de Mocambique

Secondary Miombo woodlands and forest plantations occupy increasing areas in Mozambique,the former due to anthropogenic ***,mainly species of Eucalyptus and Pinus,are being established on sites previously covered by secondary Miombo *** affects the evolution,cycle and spatiotemporal patterns of carbon(C)storage and stocks in forest *** estimation of C storage,which is indispensable for formulating climate change policies on sequestrating CO_(2),requires tools such as biomass models and biomass conversion and expansion factors(BCEF).In Mozambique,these tools are needed for both indigenous forests and *** objective of this study is to fit species-specific allometric biomass models and BCEF for exotic and indigenous tree *** incorporate efficient inter-species variability,biomass equations were fitted using nonlinear mixed-effects *** tree component biomass models had good predictability;however,better predictive accuracy and ability was observed for the 2-predictors biomass model with tree height as a second *** majority of the variability in BCEF was explained by the variation in tree *** species had larger crown biomass per unit of stem diameter and stored larger amounts of biomass per stem ***,due to relatively rapid growth,larger stem diameters,heights,and stand density,the plantations stored more biomass per tree and per unit area.

关键词： Biomass allometry Biomass partitioning Miombo Exotic forest plantations Brachystegia spiciformis Julbernardia globifl ora Eucalyptus Pinus

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Bridging the mental health treatment gap:effects of a collaborative care intervention(matrix support)in the detection and treatment of mental disorders in a Brazilian city

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Family Medicine and Community Health 2020年第4期8卷 2-13页

作者： Sonia.saraiva Max Bachmann Matheus Andrade Alberto Liria Leeds Institute of Health Sciences University of LeedsLeedsUK Norwich Medical School University of East AngliaNorwichUK Secretaria Municipal de Saúde(Municipal Health Department) FlorianópolisBrazil Departamento de Especialidades Médicas Facultad de Medicina y Ciencias de la SaludUniversidad de AlcaláAlcaláde HenaresSpain

Objective To analyse temporal trends in diagnosis and treatment of mental disorders in primary care following implementation of a collaborative care intervention(matrix support).Design Dynamic cohort design with retrospective time-series *** secondary data on medical visits to general practitioners of all study clinics were extracted from the municipal electronic records *** changes in the odds of mental disorders diagnoses and antidepressants prescriptions were estimated by multiple logistic regression at visit and patient-year levels with diagnoses or prescriptions as *** changes during two distinct stages of the intervention(stage 1 when it was restricted to mental health(2005-2009),and stage 2 when it was expanded to other areas(2010-2015))were compared by adding year-period interaction terms to each *** 49 primary care clinics in the city of Florianópolis,*** All adults attending primary care clinics of the study setting between 2005 and *** 3131983 visits representing 322100 patients were *** visit level,the odds of mental disorder diagnosis increased by 13%per year during stage 1(OR 1.13,95%CI 1.11 to 1.14,p<0.001)and decreased by 5%thereafter(OR 0.95,95%CI 0.94 to 0.95,p<0.001).The odds of incident mental disorder diagnoses decreased by 1%per year during stage 1(OR 0.99,95%CI 0.98 to 1.00,p=0.012)and decreased by 7%per year during stage 2(OR 0.93,95%CI 0.92 to 0.93,p<0.001).The odds of antidepressant prescriptions in patients with a mental disorder diagnosis increased by 7%per year during stage 1(OR 1.07,95%CI 1.05 to 1.20,p<0.001);this was driven by selective serotonin reuptake inhibitor prescriptions which increased 14%per year during stage 1(OR 1.14,95%CI 1.12 to 1.18,p<0.001)and 9%during stage 2(OR 1.09,95%CI 1.08 to 1.10,p<0.001).The odds of incident antidepressant prescriptions did not increase during stage 1(OR 1.00,95%CI 0.97 to 1.02,p=0.665)and increased by 3%during s

关键词： prescription diagnosis treatment

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A Numerical Study on Piezoelectric Energy Harvesting by Combining Transverse Galloping and Parametric Instability Phenomena

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Journal of Marine Science and Application 2017年第4期16卷 465-472页

作者： Guilherme Rosa Franzini Rebeca Caramêz saraiva Santos Celso Pupo Pesce Escola PolitEnica University of SAO Paulo SAO Paulo SP 05508-030 Brazil

This paper aims to numerically investigate the effects of parametric instability on piezoelectric energy harvesting from the transverse galloping of a square prism. A two degrees-of-freedom reduced-order model for this problem is proposed and numerically integrated. A usual quasi-steady galloping model is applied, where the transverse force coefficient is adopted as a cubic polynomial function with respect to the angle of attack. Time-histories of nondimensional prism displacement, electric voltage and power dissipated at both the dashpot and the electrical resistance are obtained as functions of the reduced velocity. Both, oscillation amplitude and electric voltage, increased with the reduced velocity for all parametric excitation conditions tested. For low values of reduced velocity, 2:1 parametric excitation enhances the electric voltage. On the other hand, for higher reduced velocities, a 1:1 parametric excitation(i.e., the same as the natural frequency) enhances both oscillation amplitude and electric voltage. It has been also found that, depending on the parametric excitation frequency, the harvested electrical power can be amplified in 70% when compared to the case under no parametric excitation.

关键词： transverse galloping energy harvesting piezoelectricity parametric instability numerical simulations

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Cytoprotective role of heme oxygenase-1 and heme degradation derived end products in liver injury

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World Journal of Hepatology 2013年第10期5卷 541-549页

作者： Clarice Silvia Taemi Origassa Niels Olsen saraiva Cmara Laboratory of Experimental and Clinical Immunology Nephrology Division Medicine DepartmentFederal University of So Paulo Laboratory of Transplantation Immunobiology Department of Immunology Institute of Biomedical Science ⅣUniversity of So Paulo

The activation of heme oxygenase-1(HO-1) appears to be an endogenous defensive mechanism used by cells to reduce inflammation and tissue damage in a number of injury models. HO-1, a stress-responsive enzyme that catabolizes heme into carbon monoxide(CO), biliverdin and iron, has previously been shown to protect grafts from ischemia/reperfusion and *** addition, the products of the HO-catalyzed reaction, particularly CO and biliverdin/bilirubin, have been shown to exert protective effects in the liver against a number of stimuli, as in chronic hepatitis C and in transplanted liver grafts. Furthermore, the induction of HO-1 expression can protect the liver against damage caused by a number of chemical compounds. More specifically, the CO derived from HO-1-mediated heme catabolism has been shown to be involved in the regulation of inflammation; furthermore, administration of low concentrations of exogenous CO has a protective effect against inflammation. Both murine and human HO-1 deficiencies have systemic manifestations associated with iron metabolism, such as hepatic overload(with signs of a chronic hepatitis) and iron deficiency anemia(with paradoxical increased levels of ferritin).Hypoxia induces HO-1 expression in multiple rodent,bovine and monkey cell lines, but interestingly, hypoxia represses expression of the human HO-1 gene in a variety of human cell types(endothelial cells, epithelial cells, T cells). These data suggest that HO-1 and CO are promising novel therapeutic molecules for patients with inflammatory diseases. In this review, we present what is currently known regarding the role of HO-1 in liver injuries and in particular, we focus on the implications of targeted induction of HO-1 as a potential therapeutic strategy to protect the liver against chemically induced injury.

关键词： Heme oxygenases Bilirubin Hepatitis C Kupffer cells Polymorphisms Immunoregulatory Hypoxia Liver ischemia

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Role of aryl hydrocarbon receptor in mesenchymal stromal cell activation:A minireview

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World Journal of Stem Cells 2017年第9期9卷 152-158页

作者： Danilo Candido de Almeida Laura Sibele Martins Evangelista Niels Olsen saraiva Camara Department of Medicine Nephrology DivisionFederal University of Sao Paulo Department of Immunology Institute of Biomedical ScienceUniversity of Sao Paulo

Mesenchymal stromal cells(MSCs) possess great therapeutic advantages due to their ability to produce a diverse array of trophic/growth factors related to cytoprotection and *** activation via specific receptors is a crucial event for these cells to exert their immunosuppressive *** aryl-hydrocarbon receptor(Ah R) is a sensitive molecule for external signals and it is expressed in MSCs and,upon positive activation,may potentially regulate the MSC-associated immunomodulatory ***,signalling pathways linked to Ah R activation can elucidate some of the molecular cascades involved in MSC-mediated *** this minireview,we have noted some important findings concerning MSC regulation via Ah R,highlighting that its activation is associated with improvement in migration and immunoregulation,as well as an increase in pro-regenerative ***,Ah R-mediated MSC activation can contribute to new perspectives on MSC-based therapies,particularly those directed at immune-associated disorders.

关键词： Mesenchymal stromal cells Aryl-hydrocarbon receptor Cell activation and immunosuppression

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Innate lymphoid cells in tissue homeostasis and diseases

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World Journal of Hepatology 2017年第23期9卷 979-989页

作者： Aline Ignacio Cristiane Naffah Souza Breda Niels Olsen saraiva Camara Laboratory of Transplantation Immunobiology Institute of Biomedical SciencesDepartment of ImmunologyUniversity of Sao PauloSP 05508-900Brazil

Innate lymphoid cells(ILCs) are the most recently discovered family of innate immune cells. They are a part of the innate immune system, but develop from the lymphoid lineage. They lack pattern-recognition receptors and rearranged receptors, and therefore cannot directly mediate antigen specific responses. The progenitors specifically associated with the ILCs lineage have been uncovered, enabling the distinction between ILCs and natural killer cells. Based on the requirement of specific transcription factors and their patterns of cytokine production, ILCs are categorized into three subsets(ILC1, ILC2 and ILC3). First observed in mucosal surfaces, these cell populations interact with hematopoietic and non-hematopoietic cells throughout the body during homeostasis and diseases, promoting immunity, commensal microbiota tolerance, tissue repair and inflammation. Over the last 8 years, ILCs came into the spotlight as an essential cell type able to integrate diverse host immune responses. Recently, it became known that ILC subsets play a key role in immune responses at barrier surfaces, interacting with the microbiota, nutrients and metabolites. Since the liver receives the venous blood directly from the intestinal vein, the intestine and liver are essential to maintain tolerance and can rapidly respond to infections or tissue damage. Therefore, in this review, we discuss recent findings regarding ILC functions in homeostasis and disease, with a focus on the intestine and liver.

关键词： Innate lymphoid cells Intestine Liver Homeostasis Inflammatory diseases

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High-pressure metamorphic rocks in the Borborema Province, Northeast Brazil: Reworking of Archean oceanic crust during proterozoic orogenies

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Geoscience Frontiers 2020年第6期11卷 2221-2242页

作者： Alanielson da Câmara Dantas Ferreira Elton Luiz Dantas Ticiano Josésaraiva dos Santos Reinhardt A.Fuck Mahyra Tedeschi Instituto de Geociências Universidade de Brasília(UnB)70910-900Brasília-DFBrazil Instituto de Geociências Universidade Estadual de Campinas(UNICAMP)Departamento de Geologia e Recursos Naturais13083-970Campinas-SPBrazil Instituto de Geoci^encias Universidade Federal de Minas Gerais(UFMG)31270-901Belo HorizonteMGBrazil

We present the first evidence of Archean oceanic crust submitted to Proterozoic high-pressure(HP)metamorphism in the South American ***-Nd and Lu-Hf isotopic data combined with U-Pb geochronological data from the Campo Grande area,Rio Grande do Norte domain,in the Northern Borborema Province,reflect a complex Archean(2.9 Ga and 2.6 Ga)and Paleoproterozoic(2.0 Ga)evolution,culminating in the Neoproterozoic Brasiliano/Pan-African orogeny(ca.600 Ma).The preserved mafic rocks contain massive poikiloblastic garnet and granoblastic amphibole with variable proportions of plagioclase+diopside in symplectitic texture,typical of high-pressure *** clinopyroxene-garnet amphibolites and the more common garnet amphibolites from the Campo Grande area are exposed as rare lenses within an Archean migmatite *** amphibolite lenses represent 2.65 Ga juvenile tholeiitic magmatism derived from depleted mantle sources(positive values of+3.81 to+30.66)later enriched by mantle metasomatism(negative εNd(t)values of-7.97).Chondrite and Primitive Mantle-normalized REE of analyzed samples and discriminant diagrams define two different oceanic affinities,with E-MORB and OIB *** Eu anomalies(Eu/Eu*=0.75-0.95)indicate depletion of plagioclase in the *** zircon cores of 3.0-2.9 Ga in analyzed samples indicate that the Neoarchean tholeiitic magmatism was emplaced into 2923±14 Ma old Mesoarchean crust(εNd(t)--2.58 and Nd TDM=3.2 Ga)of the Rio Grande do Norte *** age of retro-eclogite facies metamorphism is not yet completely *** suggest that two high-grade metamorphic events are recognized in the mafic rocks:the first at 2.0 Ga,recorded in some samples,and the second,at ca.600 Ma,stronger and more pervasive and recorded in several of the mafic rock *** Neoproterozoic zircon grains are found in symplectite texture as inclusions in the garnet grains and represent the age of HP conditions in the *** zircon grains show a

关键词： Archean oceanic crust Proterozoic orogens Borborema province

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Sirtuins in B lymphocytes metabolism and function

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World Journal of Experimental Medicine 2019年第1期9卷 1-13页

作者： Bruno Ghirotto Fernanda Fernandes Terra Niels Olsen saraiva Camara Paulo José Basso Department of Immunology Institute of Biomedical Sciences University of Sao Paulo Division of Nephrology School of Medicine Federal University of Sao Paulo Laboratory of Renal Physiology (LIM 16) School of MedicineUniversity of S?o Paulo

Sirtuins(SIRTs) are NAD+-dependent histone deacetylases and play a role in virtually all cell biological processes. As SIRTs functions vary according to their subtypes, they can either activate or inhibit signaling pathways upon different conditions or tissues. Recent studies have focused on metabolic effects performed by SIRTs in several cell types since specific metabolic pathways(e.g., aerobic glycolysis, oxidative phosphorylation, β-oxidation, glutaminolysis) are used to determine the cell fate. However, few efforts have been made to understand the role of SIRTs on B lymphocytes metabolism and function. These cells are associated with humoral immune responses by secreting larger amounts of antibodies after differentiating into antibody-secreting cells. Besides, both the SIRTs and B lymphocytes are potential targets to treat several immune-mediated disorders, including cancer. Here, we provide an outlook of recent studies regarding the role of SIRTs in general cellular metabolism and B lymphocytes functions, pointing out the future perspectives of this field.

关键词： B cells Metabolic sensors Histone deacetylases Cancer

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