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High aluminum concentration and initial establishment of Handroanthus impetiginosus : clues about an Al non-resistant species in Brazilian Cerrado

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Journal of Forestry Research 2020年第6期31卷 2075-2082页

作者： Ane Marcela das Chagas Mendon ca Jean Marcel Sousa Lira Ana Luiza de Oliveira Vilela Daniel Amorim Vieira Nayara Cristina de Melo Joao Paulo Rodrigues Alves Delfi no Barbosa Programa de Pós-Graduacao em Fisiologia Vegetal Departamento de BiologiaUniversidade Federal de LavrasLavrasMG 37200-000Brazil Programa de Pós-Graduacao em Ciências Ambientais Instituto de Ciências ExatasUniversidade Federal de AlfenasAlfenasMG 37130-001Brazil Programa de Pós-Graduacao em Fitotecnia Departamento de AgriculturaUniversidade Federal de LavrasLavrasMG 37200-000Brazil Instituto Federal de Educacao Ciência e tecnologia do Pará BelémPA 66093-020Brazil

Cerrado soils are acidic and nutrient-poor,with high content of solubilized Al 3+.Plants growing in these conditions may display adaptations to cope with high aluminum concentrations especially during early developmental *** investigated leaf nutritional status,and photosynthetic and growth characteristics during the initial establishment of Handroanthus impetiginosus(*** Dc.)Mattos,a secondary tree species distributed in the Brazilian *** goal was to understand leaf-level traits related to diff erent aluminum *** plants were cultivated in four diff erent aluminum sulfate concentrations:0,1,2,and 4 mM Al,for 40 *** performed analyses of growth,leaf gas exchange,chloroplast pigment content,and leaf mineral *** observed a linear increase of Al leaf content as a function of Al concentration in the nutrient *** grown in 1 mM Al showed a remarkable increase of K leaf content,net photosynthesis,stomatal conductance,and transpiration,while in 4 mM Al there were reductions of N,P,and K contents,gas exchange characteristics,and *** did not have mechanisms of avoidance,compartmentalization,or resistance to high Al ***,this species showed a hormetic response,with low Al concentrations stimulating and high Al concentrations inhibiting plant responses.

关键词： Hormesis Low Al concentration Al toxicity Cerrado species Carbon assimilation

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Toxoplasma gondii causes death and plastic alteration in the jejunal myenteric plexus

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World Journal of Gastroenterology 2015年第16期21卷 4829-4839页

作者： Eduardo Joséde Almeida Araújo Larissa Marchi Zaniolo Suellen Laís Vicentino Marcelo Biondaro Góis Jacqueline Nelisis Zanoni Aristeu Vieira da Silva Débora de Mello Goncales Sant'Ana Departamento de Histologia Centro de Ciencias BiológicasUniversidade Estadual de Londrina Programa de Pós-graduacao em Ciencia Animal Universidade Paranaense Departamento de Ciencias Morfológicas.universidade Estadual de Maringa Departamento de Biologia Universidade Estadual de Feira de Santana

AIM:To assess the effects of ME-49 Toxoplasma gondii(***) strain infection on the myenteric plexus and external muscle of the jejunum in ***:Thirty rats were distributed into two groups:the control group(CG)(n = 15) received 1 m L of saline solution orally, and the infected group(IG)(n=15)inoculated with 1 m L of saline solution containing500 oocysts of M-49 *** strain *** 36 d of infection,the rats were *** with *** was confirmed by blood samples collected from all rats at the beginning and end of the *** jejunum of five animals was removed and submitted to routine histological processing(paraffin)for analysis of external muscle *** remaining jejunum from the others animals was used to analyze the general population and the NADH-diaphorase,VIPergic and nitrergic subpopulations of myenteric neurons;and the enteric glial cells(S100-IR).RESULTS:Serological analysis showed that animals from the IG were infected with the *** affecting jejunal muscle thickness was observed in the IG rats(77.02±42.71)in relation to the CG(51.40±12.34),P<*** addition,31.2%of the total number of myenteric neurons died(CG:39839.3±5362.3;IG:26766.6±2177.6;P<0.05);hyperplasia of nitrergic myenteric neurons was observed(CG:7959.0±1290.4;IG:10893.0±1156.3;P<0.05);general hypertrophy of the cell body in the remaining myenteric neurons was noted[CG:232.5(187.2-286.0);IG:248.2(204.4-293.0);P<0.05];hypertrophy of the smallest varicosities containing VIP neurotransmitter was seen(CG:0.46±0.10;IG:0.80±0.16;P<0.05)and a reduction of 25.3%in enteric glia cells(CG:12.64±1.27;IG:10.09±2.10;P<0.05)was observed in the infected ***:It was concluded that infection with oocysts of ME-49 *** strain caused quantitative and plastic alterations in the myenteric plexus of the jejunum in rats.

关键词： Enteric nervous system Infectious diseases Glial cells Nitric oxide Neuronal plasticity Smallintestine Toxoplasmosis Vasoactive intestinal peptide

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Inosine: a novel treatment for sciatic nerve injury

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Neural Regeneration Research 2021年第1期16卷 127-128页

作者： Fellipe Soares dos Santos Cardoso Ana Maria Blanco Martinez Fernanda Martins de Almeida Laboratório de Neurodegeneração e Reparo–Departamento de Anatomia Patológica–Hospital Universitário Clementino Fraga Filho HUCFF/universidade Federal do Rio de Janeiro Rio de JaneiroBrazil Instituto de Ciências Biomédicas–ICB/universidade Federal do Rio de Janeiro Rio de JaneiroBrazil

Trauma to the peripheral nervous system often results in loss of motor and sensory functions of the affected area of the body,leading to a series of functional impairments(Allodi et al.,2012).Injuries to peripheral nerves initiate a series of complex events,known as Wallerian degeneration,which allows the injured axons to regenerate and reinnervate their targets(Allodi et al.,2012).Damage to a nerve induces multiple alterations,which include:axonal degeneration,breakdown of myelin sheath,Schwann cells(SC)proliferation and conversion to a repair phenotype which express cytokines and chemokines that allow the infiltration and activation of macrophages(Mietto et al.,2015;Jessen and Mirsky,2016).

关键词： al. degeneration alterations

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Diversity of mycorrhizal fungi and soil indicative species in coastal plantations of northeast Brazil

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Journal of Forestry Research 2021年第3期32卷 1203-1211页

作者： Olmar Baller Weber Maria Cátia Barroso da Silva Cristiane Figueira da Silva Diva Correia Deborah dos Santos Garruti Marcela Claudia Pagano Embrapa Agroindústria Tropical Rua Dra.Sara Mesquita2270PiciFortalezaCeará60511-110Brazil Centro de Ciências E tecnologia Universidade Estadual Do CearáAv.Dr.Silas Munguba1700Campus do ItaperiFortaleza 60740-000Brazil universidade Federal Rural Do Rio de Janeiro BR 465 Km 7 Seropédica RJSeropédicaRio de Janeiro CEP 23890-000Brazil universidade Federal de Minas Gerais Av.Antonio Carlos6627PampulhaBelo Horizonte 31270-001Brazil

The aim of this work was to evaluate arbuscular mycorrhizal(AM)fungi as soil indicators and the mycorrhization of native and exotic tree species planted in the Acaraúbasin,a transition area from the coast to the Brazilian semiarid *** with 6-year-old trees of four native and three non-native species as well as one non-forested area were evaluated in terms of the diversity of AM fungi in the mycorrhizosphere and the root colonization by AM and ectomycorrhizal(EcM)***-four AM fungi were identified;Claroideoglomus etunicatum,Glomus sinuosum,Paraglomus albidum,Acaulospora laevis,and Acaulospora brasiliensis were abundant in the forest ***,dominance,evenness and richness indices of AM fungi were higher in plots with native *** root samples were colonized by AM fungi and only A nadenanthera colubrina,Acacia mangium,Casuarina equisetifolia and Eucalyptus urophylla formed associations with EcM *** morphotypes served as soil indicators for coverings with the native species Astronium fraxinifolium and Colubrina *** species may favor the proliferation of rarer AM *** fungi–plant relationships may be important in the management of forest systems,and the evidence with mycorrhizal associations allows the inclusion of Brazilian species in tropical reforestation.

关键词： Acacia mangium Arbuscular mycorrhizal fungi Brazilian species Casuarina equisetifolia Ectomycorrhizal fungi Eucalyptus urophylla

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Nonlinear optical characterization of single β-barium-borate nanocrystals using second-harmonic confocal microscopy

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Chinese Optics Letters 2018年第4期16卷 81-85页

作者： Rodrigo G.dos Santos Lauro J.Q.Maia Cid B.de Araújo Leonardo de S.Menezes Departamento de Fisica Universidade Federal de PernambucoRecife-PE 50670-901Brazil Instituto de Fisica Universidade Federal de CoiasCoiania-CO 74001-970Brazil

The confocal microscopy technique was applied for nonlinear optical characterization of single β-barium-borate（β-BBO） nanocrystals. The experimental setup allows measurements of the laser polarization-selective secondharmonic（SH） generation, and the results can be used to determine the nanocrystals＇ c-axis orientation, as well as to obtain information about their second-order susceptibility χ^（2）. The dependence of the SH signal on the laser polarization allowed the discrimination of individual particles from aggregates. The data were fitted using a model that takes into account the BBO properties and the experimental setup characteristics considering（i） the electrostatic approximation,（ii） the effects of the microscope objective used to focus the light on the sample in an epi-geometry configuration, and（iii） the symmetry of χ^（2） for the β-BBO nanocrystals. A signal at the third-harmonic frequency was also detected, but it was too weak to be studied in detail.

关键词： SH BBO HR barium-borate nanocrystals using second-harmonic confocal microscopy Nonlinear optical characterization of single

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Medical schools that received the PROMED (program for the encouragement of curricular changes in medical courses)—Preconditions and change process

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Health 2012年第5期4卷 279-284页

作者： Patricia Alves de Souza Marco Aurélio Da Ros Angélica Maria Bicudo Zeferino universidade do Vale do Itajaí (UNIVALI) Itajaí Brazil universidade Estadual de Campinas (UNICAMP) Campinas

Since the Curriculum Guidelines (CG) which were created in 2001 and PROMED (Program for the Encouragement of Curricular Changes in Medical Courses), several schools have applied for this incentive. Medical Schools (MS) have faced important changes in their curriculum throughout the years. The purpose is to verify if medical schools that received PROMED already had a historical of curricular changes. Several interviews, which were carried out with PROMED coordinators, were recorded, transcribed and analyzed according to the Bardin’s content analysis technique. Later, these interviews were later categorized into nine themes. This paper analyses the Medical School History category which encompasses three subcategories: existence of a former changing history;need to overcome the model and changing period. It is highlighted that medical schools that received PROMED had a previous changing historical which was sometimes located in anti-hegemonic niches. It is noticeable, however, that such changes were not enough to affect the comprehension of healthillness process and its consequent results. PROMED was, effectively, the reference for medical schools implementing the C.G. which represents, now, a benchmarking for all new and old schools in the country.

关键词： Curriculum Guidelines Medical Schools

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Dengue in renal transplant recipients: Clinical course and impact on renal function

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World Journal of Transplantation 2017年第1期7卷 57-63页

作者： Paula Frassinetti Castelo Branco Camur?a Fernandes Reed AndréSiqueira Evelyne Santana Gir?o Rainne AndréSiqueira Márcia Uchoa Mota Leyla Castelo Branco Fernandes Marques Silvana Cristina Albuquerque Andrade Wilson Mendes Barroso S?nia Leite Silva Bruno Gomes Rodrigues dos Santos Claúdia Maria Costa de Oliveira Kidney Transplant Unit Hospital Universitário Walter Cantídio Universidade Federal do Ceará Department of Nephrology of universidade Estadual do Ceará universidade Estadual do Ceará

AIM To present clinical characteristics from renal transplant recipients with dengue fever and its impact on graft *** We retrospectively evaluated 11 renal transplant recipients(RTR) with dengue infection confirmed by laboratory test, between January 2007 and July 2012, transplanted in the Renal Transplant Center of Walter Cantídio University Hospital from Federal University of Ceará. RESULTS Positive dengue serology(IgM) was found in all patients. The mean time between transplant and dengue infection was 43 mo. Fever was presented in all patients. Nine patients presented with classical dengue and two(18%) with dengue hemorrhagic fever. All cases had satisfactory evolution with complete recovery of the symptoms. The time for symptom resolution varied from 2 to 20 d, with an average of 9 d. An increase of creatinine after the infection was observed in three(27.2%) patients with no clinically impact on the kidney graft function. CONCLUSION RTR with dengue infection seems to have a clinical presentation and evolution similar to those seen in the general population, with no long-term damage to patient and to the graft.

关键词： Kidney Renal Transplant Dengue Clinical Brazil

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No evidence of HPV DNA in esophageal squamous cell carcinoma in a population of Southern Brazil

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World Journal of Gastroenterology 2013年第39期19卷 6598-6603页

作者： Luís Carlos Moreira Antunes Joo Carlos Prolla Antonio de Barros Lopes Marta Pires da Rocha Renato Borges Fagundes Programa de Pós-Graduao: Ciências em Gastroenterologia e Hepatologia - universidade Federal do Rio Grande do Sul Porto AlegreRio Grande do Sul 90035-003Brasil Hospital Universitário de Santa Maria - universidade Federal de Santa Maria Santa MariaRio Grande do Sul 97119-900Brasil Departamento de Clínica Médica - universidade Federal de Santa Maria Santa MariaRio Grande do Sul 97119-900Brasil

AIM:To investigate the association between human papillomavirus(HPV)and esophageal squamous cell carcinoma(ESCC)in southern ***:We studied 189 esophageal samples from125 patients from three different groups:(1)102 biopsies from 51 patients with ESCC,with one sample from the tumor and another from normal esophageal mucosa distant from the tumor;(2)50 esophageal biopsies from 37 patients with a previous diagnosis of head and neck squamous cell carcinoma(HNSCC);and(3)37 biopsies from esophageal mucosa with normal appearance from 37 dyspeptic patients,not exposed to smoking or alcohol ***-polymerase chain reaction(PCR)with the MY09/11 and GP5/6 L1primers was used to detect HPV L1 in samples fixed in formalin and stored in paraffin *** PCR reactions were performed with a positive control(cervicovaginal samples),with a negative control(Human Genomic DNA)and with a blank reaction containing all reagents except *** took extreme care to prevent DNA contamination in sample collection,processing,and ***:The histological biopsies confirmed the diagnosis of ESCC in 52 samples(51 from ESCC group and 1 from the HNSCC group)and classified as well differentiated(12/52,23.1%),moderately differentiated(27/52,51.9%)or poorly differentiated(7/52,13.5%).One hundred twenty-eight esophageal biopsies were considered normal(51 from the ESCC group,42 from the HNSCC group and 35 from dyspeptic patients).Nine had esophagitis(7 from the HNSCC and 2 from dyspeptic patients).Of a total of 189 samples,only 6 samples had insufficient material for PCR analysis:1 from mucosa distant from the tumor in a patient with ESCC,3from patients with HNSCC and 2 from patients without *** 183 samples(96.8%)GAPDH,G3PDH and/orβ-globin were amplified,thus indicating the adequacy of the DNA in those *** DNA was negative in all the 183 samples tested:52 with ESCC,9 with esophagitis and 122 with normal esophageal ***:There was no evidence of HP

关键词： Esophageal cancer Esophageal squamous cell carcinoma Human papillomavirus Head and neck cancer Polymerase chain reactions Nested-polymerase chain reaction

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Effect of nonlinear electrodynamics on shadows of slowly rotating black holes

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Chinese Physics C 2023年第2期47卷 260-269页

作者：汤九阳刘云旗钱卫良岳瑞宏 Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China Escola de Engenharia de Lorena Universidade de São Paulo12602-810LorenaSPBrazil School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista12516-410GuaratinguetáSPBrazil

In this study,we investigate the effect of nonlinear electrodynamics on the shadows of charged,slowly rotating black holes with the presence of a cosmological *** than the null geodesic of the background black hole spacetime,the trajectory of a photon,as a perturbation of the nonlinear electrodynamic field,is governed by an effective *** latter can be derived by analyzing the propagation of a discontinuity of the electromagnetic ***,the image of the black hole and its shadow can be evaluated using the backward raytracing *** explore the properties of the resultant black hole shadows of two different scenarios of nonlinear electrodynamics,namely,the logarithmic and exponential *** particular,the effects of nonlinear electrodynamics on the optical image are investigated,as well as the image s dependence on other metric parameters,such as the black hole spin and *** resulting black hole image and shadow display rich features that potentially lead to observational implic ations.

关键词： nonlinear electrodynamics black hole shadow slowly rotating black holes

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Review of Ship Slamming Loads and Responses

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Journal of Marine Science and Application 2017年第4期16卷 427-445页

作者： Shan Wang C.Guedes Soares Centre for Marine Technology and Ocean Engineering(CENTEC) Instituto Superior TécnicoUniversidade de LisboaLisboa 1049-001Portugal

The paper presents an overview of studies of slamming on ship structures. This work focuses on the hull slamming, which is one of the most important types of slamming problems to be considered in the ship design process and the assessment of the ship safety. There are three main research aspects related to the hull slamming phenomenon, a) where and how often a slamming event occurs, b) slamming load prediction and c) structural response due to slamming loads. The approaches used in each aspect are reviewed and commented, together with the presentation of some typical results. The methodology, which combines the seakeeping analysis and slamming load prediction, is discussed for the global analysis of the hull slamming of a ship in waves. Some physical phenomena during the slamming event are discussed also. Recommendations for the future research and developments are made.

关键词： review slamming probability ship slamming hydroelasticity

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