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Id: biblio-1050037
Autor: Konar, Atheni; Sarkar, Tandra; Sukul, Nirmal Chandra; Sukul, Abirban; Chakraborty, Indrani; Ray, Sriparna.
Título: High and ultra low concentrations of Mercuric chloride initiate their specific action on binding sites of invertase and modify its interaction with sucrose
Fonte: Int. j. high dilution res;18(3/4):19-34, 2019.
Idioma: en.
Resumo: Background: Mercuric chloride is known to inhibit the activity of enzymes. It is used in homeopathy at ultra low concentration (ULC) and is known as Mercurius corrosivus (Merc cor). ULCs of Merc cor are reported to promote enzyme activity. Objective: To see whether the mother tincture (θ) of Merc cor and its ULCs interact with an enzyme invertase at its binding sites and influence enzyme's action on its substrate sucrose. Methods: Merc cor θ (0.15 M HgCl2) was diluted with deionized and distilled (DD) water 1:100 and succussed 10 times to prepare Merc cor 1 cH or 1st potency. This potency was further diluted and succussed in 200 and 1000 steps to prepare 200cH and 1000cH potencies, respectively. Merc cor 200 cH and 1000cH were prepared in 90% ethanol. The two potencies and blank 90% EtOH were diluted with DD water 1:1000 to minimize ethanol content to a negligible amount 0.09%. The control was DD water (0.99g/M). The drugs, EtOH and water control were mixed separately with 0.037 mM invertase in DD water. Using an isothermal calorimetry (ITC) instrument the substrate sucrose (65mM) was injected at 2 µl every 2 min into 300 µl invertase solution 20 times at 25 0C. Molecular modeling study was done to predict possible binding sites and nature of binding between the enzyme and HgCl2, and between the enzyme and water. Potencies after dilution are virtually water. Fluorescence spectra of invertase (4µM) mixed with drug/control solutions were also obtained to see the effect of drugs on protein folding. Results: Thermodynamic parameters like binding constant (K), change in enthalpy(ΔH), entropy(ΔS) and Gibbs free energy(ΔG) showed marked variation in treatment effects on the enzyme. Molecular modeling study also shows variation in binding between invertase and HgCl2, and between invertase and water. Fluorescence spectra show variation in quenching related to different treatments. Conclusion: Merc cor mother tincture and its potencies interact at different binding sites of invertase and modify the enzyme's action on sucrose. So, potencies act as modulators of ligand, sucrose. Drug solutions induce conformational changes in the enzyme. (au)
Descritores: Sacarose
Sítios de Ligação
Modelos Moleculares
Baixas Potências
beta-Frutofuranosidase
Homeopatia
Cloreto de Mercúrio
Responsável: BR926.1 - Biblioteca Artur de Almeida Rezende Filho


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Mores, Nelson
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Id: biblio-889245
Autor: Gava, Danielle; Serrão, Vitor Hugo Balasco; Fernandes, Lana Teixeira; Cantão, Mauricio Egídio; Ciacci-Zanella, Janice Reis; Morés, Nelson; Schaefer, Rejane.
Título: Structure analysis of capsid protein of Porcine circovirus type 2 from pigs with systemic disease
Fonte: Braz. j. microbiol;49(2):351-357, Apr.-June 2018. graf.
Idioma: en.
Projeto: Brazilian Agricultural Research Corporation-EMBRAPA; . São Paulo Research Foundation-FAPESP.
Resumo: Abstract Economic losses with high mortality rate associated with Porcine circovirus type 2 (PCV2) is reported worldwide. PCV2 commercial vaccine was introduced in 2006 in U.S. and in 2008 in Brazil. Although PCV2 vaccines have been widely used, cases of PCV2 systemic disease have been reported in the last years. Eleven nursery or fattening pigs suffering from PCV2 systemic disease were selected from eight PCV2-vaccinated farms with historical records of PCV2 systemic disease in Southern Brazil. PCV2 genomes were amplified and sequenced from lymph node samples of selected pigs. The comparison among the ORF2 amino acid sequences of PCV2 isolates revealed three amino acid substitutions in the positions F57I, N178S and A190T, respectively. Using molecular modeling, a structural model for the capsid protein of PCV2 was built. Afterwards, the mutated residues positions were identified in the model. The structural analysis of the mutated residues showed that the external residue 190 is close to an important predicted region for antibodies recognition. Therefore, changes in the viral protein conformation might lead to an inefficient antibody binding and this could be a relevant mechanism underlying the recent vaccine failures observed in swine farms in Brazil.
Descritores: Circovirus/química
Proteínas do Capsídeo/química
-Conformação Proteica
Suínos
Doenças dos Suínos/virologia
Brasil
Modelos Moleculares
Circovirus/isolamento & purificação
Circovirus/genética
Infecções por Circoviridae/veterinária
Infecções por Circoviridae/virologia
Substituição de Aminoácidos
Proteínas do Capsídeo/genética
Limites: Animais
Responsável: BR1.1 - BIREME


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Texto completo
Id: biblio-894879
Autor: Sutter, Amanda; Antunes, Deborah; Silva-Almeida, Mariana; Costa, Maurício Garcia de Souza; Caffarena, Ernesto Raul.
Título: Structural insights into leishmanolysins encoded on chromosome 10 of Leishmania (Viannia) braziliensis
Fonte: Mem. Inst. Oswaldo Cruz;112(9):617-625, Sept. 2017. tab, graf.
Idioma: en.
Resumo: BACKGROUND Leishmanolysins have been described as important parasite virulence factors because of their roles in the infection of promastigotes and resistance to host's defenses. Leishmania (Viannia) braziliensis contains several leishmanolysin genes in its genome, especially in chromosome 10. However, the functional impact of such diversity is not understood, but may be attributed partially to the lack of structural data for proteins from this parasite. OBJECTIVES This works aims to compare leishmanolysin sequences from L. (V.) braziliensis and to understand how the diversity impacts in their structural and dynamic features. METHODS Leishmanolysin sequences were retrieved from GeneDB. Subsequently, 3D models were built using comparative modeling methods and their dynamical behavior was studied using molecular dynamic simulations. FINDINGS We identified three subgroups of leishmanolysins according to sequence variations. These differences directly affect the electrostatic properties of leishmanolysins and the geometry of their active sites. We identified two levels of structural heterogeneity that might be related to the ability of promastigotes to interact with a broad range of substrates. MAIN CONCLUSION Altogether, the structural plasticity of leishmanolysins may constitute an important evolutionary adaptation rarely explored when considering the virulence of L. (V.) braziliensis parasites.
Descritores: Leishmania braziliensis/genética
Metaloendopeptidases/genética
-Conformação Proteica
Variação Genética
Modelos Moleculares
Limites: Humanos
Responsável: BR1.1 - BIREME


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Id: biblio-889043
Autor: Hong, Chenglv; Zhou, Xinlang; Huang, Weijian; Shan, Peiren; Dong, Fengquan.
Título: Synthesis and anti-myocarditis activity in a multifunctional lanthanide microporous metal-organic framework with 1D helical chain building units
Fonte: Braz. j. med. biol. res = Rev. bras. pesqui. méd. biol;51(3):e7050, 2018. tab, graf.
Idioma: en.
Resumo: A new microporous lanthanide metal-organic framework, {[Yb(BTB)(H2O) (DEF)2}n (1, DEF=N,N-Diethylformamide), with 1D nano-sized channels has been constructed by bridging helical chain secondary building units with 1,3,5-benzenetrisbenzoic acid (H3BTB) ligand. Structural characterization suggests that this complex crystallizes in the hexagonal space group P6122 and possesses 1D triangular channels with coordinated water molecules pointing to the channel center. In addition, anti-myocarditis properties of compound 1 were evaluated in vivo. The results showed that compound 1 can improve hemodynamic parameters of, and it may be a good therapeutic option for heart failure in the future.
Descritores: Anti-Inflamatórios/química
Cristalografia por Raios X
Elementos da Série dos Lantanídeos/química
Estruturas Metalorgânicas/química
Miocardite/terapia
-Anti-Inflamatórios/uso terapêutico
Estruturas Metalorgânicas/uso terapêutico
Modelos Moleculares
Difração de Pó
Termogravimetria
Difração de Raios X
Limites: Animais
Masculino
Camundongos
Responsável: BR1.1 - BIREME


  5 / 103 LILACS  
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Id: biblio-871515
Autor: Silva, Rosana Barbosa.
Título: Distúrbio do desenvolvimento sexual 46,XX testicular SRY negativo sindrômico devido à mutação missense no gene RSPO1: estudo clínico, molecular e histológico de grande família consanguínea brasileira / SRY-negative syndromic 46,XX testicular disorder of sex development due to missense homozygous RSPO1 mutation: clinical, molecular and histological study of a large consanguineous Brazilian family.
Fonte: São Paulo; s.n; 2015. [160] p. map, ilus, tab, graf.
Idioma: pt.
Tese: Apresentada a Universidade de São Paulo. Faculdade de Medicina para obtenção do grau de Doutor.
Resumo: Nos mamíferos, a determinação sexual é governada pelo equilíbrio entre duas vias de sinalização paralelas e antagônicas: a via masculina SOX9/FGF9 e a via feminina RSPO1/beta-catenina/WNT4. A R-spondina 1 é uma importante reguladora do processo de diferenciação ovariana e atua modulando a via de sinalização Wnt canônica (Wnt/beta-catenina). Em humanos, mutações em RSPO1 causam uma rara síndrome genética autossômica recessiva caracterizada por Distúrbios do Desenvolvimento Sexual (DDS) 46,XX Testicular ou Ovotesticular, hiperceratose palmoplantar (HPP) e predisposição para o desenvolvimento de carcinoma de células escamosas (MIM 610644). Identificamos um paciente brasileiro, proveniente de uma grande família consanguínea, que apresentava a associação de HPP e DDS 46,XX Testicular SRY negativo. A avaliação da região codificadora do gene RSPO1 identificou a nova variante alélica c.305G>A (p.Cys102Tyr). O estudo de segregação realizado em 67 familiares demonstrou que a variante c.305G>A segrega em perfeita concordância com o fenótipo de HPP, exibindo um padrão de herança autossômico recessivo. Na família foram identificados 10 indivíduos afetados pelo fenótipo de HPP. As avaliações clínica e hormonal e os estudos molecular e citogenético nesses indivíduos resultou na caracterização de: (a) quatro indivíduos do sexo masculino 46,XX e/ou SRY negativo, com ambiguidade genital e perfil hormonal alterado; (b) cinco indivíduos do sexo masculino 46,XY e/ou SRY positivo, sem ambiguidade genital, com perfil hormonal normal e (c) uma mulher 46,XX, fértil. Experimentos de transfecção transitória in vitro demostraram que a proteína mutante tem menor capacidade de transativação do plasmídio reporter da via Wnt. As simulações de dinâmica molecular constataram que a troca p.Cys102Tyr aumenta a flexibilidade do backbone da R-spondina-1, diminuindo a energia de ligação da proteína ao complexo de receptores, LGR5 e RNF43. Em conjunto, nossos achados demonstram que a...

In mammals, sex determination is governed by the balance between two parallel and antagonic signaling pathways: the male SOX9/FGF9 and the female, RSPO1/beta-catenin/WNT4 pathways. R-spondin 1 regulates the ovarian differentiation process by its modulating action through the canonic Wnt pathway (Wnt/beta-catenin). In humans, patogenic mutations in RSPO1 cause a rare, autosomic recessive syndrome characterized by 46,XX Testicular or Ovotesticular disorders of sexual development (DSD), palmoplantar keratosis (PPK) and predisposition to squamous cell carcinoma (MIM 610644). We identified and studied a SRY-negative 46,XX DSD patient with PPK from a large, consaguineous, brazillian family. Through a "candidate gene" approach we identified in the proband a new allelic variant in the coding region of RSPO1, c.305G > A. This variant presented full concordance with the PPK phenotype by segregation analyses in 10 of 67 members of this family. Clinical, hormonal, cytogenetic and molecular genetic studies characterized three patterns in individuals with this variant: (a) four 46,XX and/or SRY-negative males with ambiguous genitalia and altered hormonal profile; (b) five 46,XY and/or SRY-positive males without ambiguous genitalia with normal hormonal profile; (c) one 46,XX fertile woman. In vitro experiments demonstrated that transient transfection of the mutant protein resulted in lower transactivation of the Wnt pathway-reporter plasmid. Moreover, molecular dinamic studies showed that p.Cys102Tyr increased the R-spondin-1 backbone flexibility, thus decreasing the interaction between this protein and its receptors, LGR5 and RNF43. Thus, both in vitro and in silico analysis demonstrate the pathogenicity of the RSPO1 variant c.305G > A. In addition, in the index case, a higher expression of SOX9, corroborated by a reactive immunohistochemistry in testicular tissue, suggested that the process of sexual reversal in the XX individual is driven by a higher SOX9 expression...
Descritores: beta Catenina
Expressão Gênica
Genética
Imuno-Histoquímica
Ceratodermia Palmar e Plantar
Modelos Moleculares
Processos de Determinação Sexual
Fatores de Transcrição SOX9
TRANSTORNOS TESTICULARES ABSTRACTING AND INDEXING AS TOPIC, XX DO DESENVOLVIMENTO SEXUAL
Via de Sinalização Wnt
Limites: Humanos
Masculino
Feminino
Adulto
Pessoa de Meia-Idade
Idoso
Responsável: BR66.1 - Divisão de Biblioteca e Documentação
BR66.1


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Texto completo
Id: lil-788101
Autor: Shield, Kevin D.; Monteiro, Maristela; Roerecke, Michael; Smith, Blake; Rehm, Jürgen.
Título: Alcohol consumption and burden of disease in the Americas in 2012: implications for alcohol policy / El consumo de alcohol y la carga de morbilidad en la región de las Américas en el 2012: implicaciones para las políticas relacionadas con el consumo de alcohol
Fonte: Rev. panam. salud pública = Pan am. j. public health;38(6):442-449, nov.-dic. 2015. tab.
Idioma: en.
Resumo: OBJECTIVE:To describe the volume and patterns of alcohol consumption up to and including 2012, and to estimate the burden of disease attributable to alcohol consumption as measured in deaths and disability-adjusted life years (DALYs) lost in the Americas in 2012. METHODS: Measures of alcohol consumption were obtained from the World Health Organization (WHO) Global Information System on Alcohol and Health (GISAH). The burden of alcohol consumption was estimated in both deaths and DALYs lost based on mortality data obtained from WHO, using alcohol-attributable fractions. Regional groupings for the Americas were based on the WHO classifications for 2004 (according to child and adult mortality). RESULTS: Regional variations were observed in the overall volume of alcohol consumed, the proportion of the alcohol market attributable to unrecorded alcohol consumption, drinking patterns, prevalence of drinking, and prevalence of heavy episodic drinking, with inhabitants of the Americas consuming more alcohol (8.4 L of pure alcohol per adult in 2012) compared to the world average. The Americas also experienced a high burden of disease attributable to alcohol consumption (4.7% of all deaths and 6.7% of all DALYs lost), especially in terms of injuries attributable to alcohol consumption. CONCLUSIONS: Alcohol is consumed in a harmful manner in the Americas, leading to a high burden of disease, especially in terms of injuries. New cost-effective alcohol policies, such as increasing alcohol taxation, increasing the minimum legal age to purchase alcohol, and decreasing the maximum legal blood alcohol content while driving, should be implemented to decrease the harmful consumption of alcohol and the resulting burden of disease.

OBJETIVO:Describir el volumen y los modelos de consumo de alcohol hasta el año 2012 incluido, y calcular la carga de morbilidad atribuible al consumo de alcohol medida según el número de defunciones y los años de vida ajustados en función de la discapacidad (AVAD) perdidos en la Región de las Américas en el 2012. MÉTODOS: Los datos sobre el consumo de alcohol se obtuvieron a partir del Sistema Mundial de Información sobre el Alcohol y la Salud (GISAH, por sus siglas en inglés) de la Organización Mundial de la Salud (OMS). La carga del consumo de alcohol se calculó según la mortalidad y según los AVAD perdidos con base en los datos de mortalidad obtenidos de la OMS, tomando en consideración las fracciones atribuibles al alcohol. La división en subregiones se basó en las clasificaciones de la OMS del año 2004 (según la mortalidad en niños y adultos). RESULTADOS: Se observaron variaciones regionales en el volumen total de alcohol consumido, la proporción del mercado del alcohol atribuible al consumo de alcohol no registrado, los hábitos de consumo, la prevalencia del consumo y la prevalencia de los episodios de consumo excesivo de alcohol. Los habitantes de la Región de las Américas consumieron más alcohol (8,4 litros de alcohol puro por adulto en el 2012) en comparación con el promedio mundial. La Región también experimentó una alta carga de morbilidad atribuible al consumo de alcohol (4,7% de las defunciones y 6,7% de los AVAD perdidos), especialmente en forma de lesiones atribuibles al consumo de alcohol. CONCLUSIONES: El alcohol se consume de una manera perjudicial en la Región de las Américas y ello comporta una alta carga de morbilidad, especialmente en forma de lesiones. Con objeto de disminuir el consumo perjudicial de bebidas alcohólicas y la carga de morbilidad resultante, es preciso introducir nuevas políticas en materia de consumo de alcohol que sean eficaces en función de los costos, tales como el incremento de los impuestos sobre el alcohol, el aumento de la edad mínima legal para adquirir alcohol, y la disminución de la concentración máxima legal de alcohol en sangre mientras se conduce.
Descritores: Proteínas de Bactérias/química
Neuraminidase/química
Streptococcus pneumoniae/enzimologia
Fatores de Virulência/química
-Sítios de Ligação
Proteínas de Bactérias/metabolismo
Lactose/análogos & derivados
Lactose/metabolismo
Modelos Moleculares
Neuraminidase/metabolismo
Ligação Proteica
Dobramento de Proteína
Estrutura Terciária de Proteína
Ácidos Siálicos/metabolismo
Streptococcus pneumoniae/química
Fatores de Virulência/metabolismo
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-785455
Autor: Modak, Brenda; Torres, Paulina; Mascayano, Carolina; Torres, René; Urzúa, Alejandro; Valenzuela, Beatriz.
Título: Derivatives of 3H-spiro1-benzofuran-2, 1'-cyclohexanes: immunostimulants for veterinary use / Derivados de 3H-espiro1-benzofurano-2, 1'-ciclohexanos: inmunoestimulantes de uso veterinario
Fonte: Bol. latinoam. Caribe plantas med. aromát;13(4):375-380, jul. 2014. ilus, tab.
Idioma: en.
Projeto: Fondecyt.
Resumo: Four 3H-spiro1-benzofuran-2, 1'-cyclohexanes were synthesized from filifolinol, two of which are reported for the first time. Docking molecular studies were carried out to determine in silico whether these derivatives have similar immunostimulant activity to that reported for filifolinol, and its oxidation product, filifolinone. Through of the study of interactions of these compounds with the heterodimer of the protein present in teleost TLR1-TLR2, filifolinol, 3'-filifolinchloride and filifolinyl acetate shows similar interactions between them, allowing to predict that they would have similar immunostimulant activity, but different to filifolinone and filifolinane or that they would act by a different mechanisms.

Cuatro 3H-spiro1-benzofuran-2, 1'-ciclohexanos se sintetizaron a partir de filifolinol, dos de los cuales son reportados por primera vez. Se llevaron a cabo estudios de docking molecular para determinar in silico si estos derivados tienen actividad inmunoestimulante similar a la reportada para filifolinol y su producto de oxidación, filifolinona. A través del estudio de las interacciones de estos compuestos con el heterodímero de la proteína presente en teleósteos TLR1-TLR2 se estableció que el filifolinol, 3'-cloruro de filifolinilo y acetato de filifolinilo tienen interacciones similares con el heterodímero, lo que permite predecir que entre ellos tendrían una actividad simi- lar, pero diferente a la de la filifolinona y filifolinano o que estos últimos actuarían por diferentes mecanismos.
Descritores: Adjuvantes Imunológicos
Benzofuranos/química
Cicloexanos/química
Heliotropium
-Compostos de Espiro/química
Modelos Moleculares
Receptores Toll-Like
Medicina Veterinária
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Brasil
Malaquias, Luiz Cosme Cotta
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Id: lil-775122
Autor: Drumond, Betania Paiva; Fagundes, Luiz Gustavo da Silva; Rocha, Raissa Prado; Fumagalli, Marcilio Jorge; Araki, Carlos Shigueru; Colombo, Tatiana Elisa; Nogueira, Mauricio Lacerda; Castilho, Thiago Elias; Silveira, Nelson José Freitas da; Malaquias, Luiz Cosme Cotta; Coelho, Luiz Felipe Leomil.
Título: Phylogenetic analysis of Dengue virus 1 isolated from South Minas Gerais, Brazil
Fonte: Braz. j. microbiol;47(1):251-258, Jan.-Mar. 2016. tab, graf.
Idioma: en.
Projeto: National Counsel of Technological and Scientific Development (CNPq).
Resumo: Abstract Dengue is a major worldwide public health problem, especially in the tropical and subtropical regions of the world. Primary infection with a single Dengue virus serotype causes a mild, self-limiting febrile illness called dengue fever. However, a subset of patients who experience secondary infection with a different serotype can progress to a more severe form of the disease, called dengue hemorrhagic fever. The four Dengue virus serotypes (1–4) are antigenically and genetically distinct and each serotype is composed of multiple genotypes. In this study we isolated one Dengue virus 1 serotype, named BR/Alfenas/2012, from a patient with dengue hemorrhagic fever in Alfenas, South Minas Gerais, Brazil and molecular identification was performed based on the analysis of NS5 gene. Swiss mice were infected with this isolate to verify its potential to induce histopathological alterations characteristic of dengue. Liver histopathological analysis of infected animals showed the presence of inflammatory infiltrates, hepatic steatosis, as well as edema, hemorrhage and necrosis focal points. Phylogenetic and evolutionary analyses based on the envelope gene provided evidence that the isolate BR/Alfenas/2012 belongs to genotype V, lineage I and it is probably derived from isolates of Rio de Janeiro, Brazil. The isolate BR/Alfenas/2012 showed two unique amino acids substitutions (SER222THRE and PHE306SER) when compared to other Brazilian isolates from the same genotype/lineage. Molecular models were generated for the envelope protein indicating that the amino acid alteration PHE 306 SER could contribute to a different folding in this region located within the domain III. Further genetic and animal model studies using BR/Alfenas/2012 and other isolates belonging to the same lineage/genotype could help determine the relation of these genetic alterations and dengue hemorrhagic fever in a susceptible population.
Descritores: Vírus da Dengue/classificação
Vírus da Dengue/genética
Dengue/virologia
Variação Genética
Genótipo
Filogenia
-Substituição de Aminoácidos
Estruturas Animais/patologia
Brasil
Modelos Animais de Doenças
Vírus da Dengue/isolamento & purificação
Produtos do Gene env/química
Produtos do Gene env/genética
Histocitoquímica
Microscopia
Modelos Moleculares
Mutação Puntual
Conformação Proteica
Proteínas não Estruturais Virais/genética
Limites: Animais
Humanos
Camundongos
Responsável: BR1.1 - BIREME


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Texto completo SciELO Brasil
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Id: lil-764585
Autor: Niño, Carlos H; Forero-Baena, Nicolás; Contreras, Luis E; Sánchez-Lancheros, Diana; Figarella, Katherine; Ramírez, María H.
Título: Identification of the nicotinamide mononucleotide adenylyltransferase of Trypanosoma cruzi
Fonte: Mem. Inst. Oswaldo Cruz;110(7):890-897, Nov. 2015. tab, graf.
Idioma: en.
Projeto: DIB-UNAL; . IDEA Foundation.
Resumo: The intracellular parasite Trypanosomacruzi is the aetiological agent of Chagas disease, a public health concern with an increasing incidence rate. This increase is due, among other reasons, to the parasite’s drug resistance mechanisms, which require nicotinamide adenine dinucleotide (NAD+). Furthermore, this molecule is involved in metabolic and intracellular signalling processes necessary for the survival of T. cruzithroughout its life cycle. NAD+biosynthesis is performed by de novo and salvage pathways, which converge on the step that is catalysed by the enzyme nicotinamide mononucleotide adenylyltransferase (NMNAT) (enzyme commission number: 2.7.7.1). The identification of the NMNAT of T. cruziis important for the development of future therapeutic strategies to treat Chagas disease. In this study, a hypothetical open reading frame (ORF) for NMNAT was identified in the genome of T. cruzi.The corresponding putative protein was analysed by simulating structural models. The ORF was amplified from genomic DNA by polymerase chain reaction and was further used for the construction of a corresponding recombinant expression vector. The expressed recombinant protein was partially purified and its activity was evaluated using enzymatic assays. These results comprise the first identification of an NMNAT in T. cruziusing bioinformatics and experimental tools and hence represent the first step to understanding NAD+ metabolism in these parasites.
Descritores: Nicotinamida-Nucleotídeo Adenililtransferase/metabolismo
Trypanosoma cruzi/enzimologia
-Sequência de Aminoácidos
Modelos Moleculares
Dados de Sequência Molecular
Nicotinamida-Nucleotídeo Adenililtransferase/genética
Alinhamento de Sequência
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-763142
Autor: Catré, Dora; Lopes, Maria Francelina; Viana, Joaquim Silva; Cabrita, António Silvério.
Título: Perioperative morbidity and mortality in the first year of life: a systematic review (1997-2012) / Morbimortalidade perioperatória no primeiro ano de idade: revisão sistemática (1997-2012)
Fonte: Rev. bras. anestesiol;65(5):384-394, Sept.-Oct. 2015. tab.
Idioma: en.
Resumo: ABSTRACTBACKGROUND AND OBJECTIVES: Although many recognize that the first year of life and specifically the neonatal period are associated with increased risk of anesthetic morbidity and mortality, there are no studies directed to these pediatric subpopulations. This systematic review of the scientific literature including the last 15 years aimed to analyze the epidemiology of morbidity and mortality associated with general anesthesia and surgery in the first year of life and particularly in the neonatal (first month) period.CONTENT: The review was conducted by searching publications in Medline/PubMed databases, and the following outcomes were evaluated: early mortality in the first year of life (<1 year) and in subgroups of different vulnerability in this age group (0-30 days and 1-12 months) and the prevalence of cardiac arrest and perioperative critical/adverse events of various types in the same subgroups.CONCLUSIONS: The current literature indicates great variability in mortality and morbidity in the age group under consideration and in its subgroups. However, despite the obvious methodological heterogeneity and absence of specific studies, epidemiological profiles of morbidity and mortality related to anesthesia in children in the first year of life show higher frequency of morbidity and mortality in this age group, with the highest peaks of incidence in the neonates' anesthesia.

RESUMOJUSTIFICATIVA E OBJETIVOS: Embora muitos reconheçam que a idade inferior a um ano e especificamente o período neonatal estejam associados a maior risco de morbimortalidade anestésica, não existem estudos dirigidos a essas subpopulações pediátricas. Esta revisão sistemática das publicações científicas dos últimos 15 anos teve como objetivo analisar o perfil epidemiológico da morbimortalidade relacionada com a anestesia geral e cirurgia no primeiro ano de idade e em particular no período neonatal (primeiro mês de idade).CONTEúDO: A revisão foi conduzida por pesquisa de publicações nas bases de dados Medline/PubMed. Foram avaliados os seguintes desfechos: mortalidade precoce no primeiro ano de idade (< 1A) e em subgrupos de diferente vulnerabilidade nesta faixa etária (0-30 dias e 1-12 meses) e prevalência de parada cardíaca e eventos críticos/adversos perioperatórios de diversos tipos nos mesmos subgrupos.CONCLUSÕES: A literatura corrente indica grande variabilidade nos índices de mortalidade e morbidade na faixa etária em análise, bem como nos seus subgrupos. No entanto, apesar da óbvia heterogeneidade metodológica e da ausência de estudos específicos, os perfis epidemiológicos de morbimortalidade relacionada com a anestesia de crianças no primeiro ano de idade mostram frequência mais alta de morbimortalidade nessa faixa etária, com os maiores picos de incidência na anestesia de neonatos.
Descritores: Sítios de Ligação
Ligação Proteica
Conformação Proteica
Proteínas/química
Proteínas/metabolismo
-Biologia Computacional
Bases de Dados de Proteínas
Modelos Moleculares
Ressonância Magnética Nuclear Biomolecular
Tipo de Publ: Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.
Responsável: BR1.1 - BIREME



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