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Texto completo SciELO Chile
Texto completo
Id: biblio-950803
Autor: Vásquez-Soto, Beatriz; Manríquez, Nicolás; Cruz-Amaya, Mirna; Zouhar, Jan; Raikhel, Natasha V; Norambuena, Lorena.
Título: Sortin2 enhances endocytic trafficking towards the vacuole in Saccharomyces cerevisiae
Fonte: Biol. Res;48:1-11, 2015. ilus, graf, tab.
Idioma: en.
Projeto: FONDECYT.
Resumo: BACKGROUND: A highly regulated trafficking of cargo vesicles in eukaryotes performs protein delivery to a variety of cellular compartments of endomembrane system. The two main routes, the secretory and the endocytic pathways have pivotal functions in uni- and multi-cellular organisms. Protein delivery and targeting includes cargo recognition, vesicle formation and fusion. Developing new tools to modulate protein trafficking allows better understanding the endomembrane system mechanisms and their regulation. The compound Sortin2 has been described as a protein trafficking modulator affecting targeting of the vacuolar protein carboxypeptidase Y (CPY), triggering its secretion in Saccharomyces cerevisiae. RESULTS: A reverse chemical-genetics approach was used to identify key proteins for Sortin2 bioactivity. A genome-wide Sortin2 resistance screen revealed six yeast deletion mutants that do not secrete CPY when grown at Sortin2 condition where the parental strain does: met18, sla1, clc1, dfg10, dpl1 and yjl175w. Integrating mutant phenotype and gene ontology annotation of the corresponding genes and their interactome pointed towards a high representation of genes involved in the endocytic process. In wild type yeast endocytosis towards the vacuole was faster in presence of Sortin2, which further validates the data of the genome-wide screen. This effect of Sortin2 depends on structural features of the molecule, suggesting compound specificity. Sortin2 did not affect endocytic trafficking in Sortin2-resistant mutants, strongly suggesting that the Sortin2 effects on the secretory and endocytic pathways are linked. CONCLUSIONS: Overall, the results reveal that Sortin2 enhances the endocytic transport pathway in Saccharomyces cerevisiae. This cellular effect is most likely at the level where secretory and endocytic pathways are merged. Them Sortin2 specificity over the endomembrane system places it as a powerful biological modulator for cell biology.
Descritores: Proteínas de Plantas/fisiologia
Rodanina/análogos & derivados
Saccharomyces cerevisiae/metabolismo
Transporte Proteico/genética
Transporte Biológico
Via Secretória
Tipo de Publ: Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Responsável: CL1.1 - Biblioteca Central

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Texto completo SciELO Brasil
Carvalho, Denise P
Texto completo
Id: biblio-886776
Título: Evidence of the Presence of Thyroid Hormones in Achatina fulica Snails
Fonte: An. acad. bras. ciênc;89(3,supl):2181-2188, 2017. graf.
Idioma: en.
Resumo: ABSTRACT The objective of this study was to identify thyroid hormones and to examine their putative site of synthesis in Achatina fulica snails. For this purpose, radioimmunoassays were performed for T3 and T4 before and after long starvation with or without hemolymph deproteinization. Sodium/iodide symporter activity in vivo was analyzed through 125I administration with and without KClO4 pretreatment. Only T4 was detected, and its concentration decreased due to starvation or deproteinization. However, high-performance liquid chromatography analysis also showed the presence of T2 and T3 apart from T4, but rT3 was not detected in the A. fulica hemolymph. The sodium/iodide symporter activity was greater in cerebral ganglia than digestive gland, but KClO4 treatment did not inhibit iodide uptake in any of the tissues analyzed. Altogether, our data confirm for the first time the presence of thyroid hormones in A. fulica snails and suggest their participation in the metabolism control in this species, although the putative site of hormone biosynthesis remains to be elucidated.
Descritores: Caramujos/química
Transporte Biológico
Cromatografia Líquida de Alta Pressão
Simportadores de Cloreto de Sódio
Limites: Animais
Responsável: BR1.1 - BIREME

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Texto completo SciELO Brasil
Texto completo
Id: biblio-886642
Título: Effect of phosphorus on arsenic uptake and metabolism in rice cultivars differing in phosphorus use efficiency and response
Fonte: An. acad. bras. ciênc;89(1):163-174, Jan,-Mar. 2017. graf.
Idioma: en.
Resumo: ABSTRACT A hydroponic experiment was carried out to investigate the effect of phosphorus (P) nutrition on arsenic (As) uptake and translocation within the seedlings of rice cultivars. The experiment occurred in three stages: I 5 days of acclimatization (nutritive solution); II 10 days under P (0.0 and 0.09 mM) and As (0.0 and 100 mM) treatments; III 5 days under recovery. The As exposure had significant effect reducing dry weights of shoots or roots, resulted in elevated concentrations of As in shoot tissues. BR-IRGA 409 showed the highest susceptibility to As in biomass production and root system parameters regardless the P level. This cultivar showed contrasting responses of As translocation to shoot tissue dependent on P levels, with the highest As concentration under low P and lowest under normal P levels. P nutrition was most striking on plants recovery for all cultivars under As exposure. Clearer separation of cultivars for phosphorus use efficiency (PUE) occurred at lower shoot P contents, that was, at higher levels of P deficiency stress. IRGA 424 showed higher PUE as compared to the others cultivars. Our results go some way to understanding the role of P nutrition in controlling the effects of As in rice shoots.
Descritores: Fósforo/farmacologia
Oryza/efeitos dos fármacos
Valores de Referência
Sementes/efeitos dos fármacos
Fatores de Tempo
Transporte Biológico
Reprodutibilidade dos Testes
Raízes de Plantas/efeitos dos fármacos
Raízes de Plantas/metabolismo
Responsável: BR1.1 - BIREME

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Texto completo SciELO Brasil
Texto completo
Id: biblio-889178
Autor: Liu, Di; Yang, Qianqian; Ge, Ke; Hu, Xiuna; Qi, Guozhen; Du, Binghai; Liu, Kai; Ding, Yanqin.
Título: Promotion of iron nutrition and growth on peanut by Paenibacillus illinoisensis and Bacillus sp. strains in calcareous soil
Fonte: Braz. j. microbiol;48(4):656-670, Oct.-Dec. 2017. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation of China; . Science and Technology Major Projects of Shandong Province.
Resumo: ABSTRACT This study aimed to explore the effects of two siderophore-producing bacterial strains on iron absorption and plant growth of peanut in calcareous soil. Two siderophore-producing bacterial strains, namely, YZ29 and DZ13, isolated from the rhizosphere soil of peanut, were identified as Paenibacillus illinoisensis and Bacillus sp., respectively. In potted experiments, YZ29 and DZ13 enhanced root activity, chlorophyll and active iron content in leaves, total nitrogen, phosphorus and potassium accumulation of plants and increased the quality of peanut kernels and plant biomass over control. In the field trial, the inoculated treatments performed better than the controls, and the pod yields of the three treatments inoculated with YZ29, DZ13, and YZ29 + DZ13 (1:1) increased by 37.05%, 13.80% and 13.57%, respectively, compared with the control. Based on terminal restriction fragment length polymorphism analysis, YZ29 and DZ13 improved the bacterial community richness and species diversity of soil surrounding the peanut roots. Therefore, YZ29 and DZ13 can be used as candidate bacterial strains to relieve chlorosis of peanut and promote peanut growth. The present study is the first to explore the effect of siderophores produced by P. illinoisensis on iron absorption.
Descritores: Arachis/crescimento & desenvolvimento
Sementes/crescimento & desenvolvimento
Microbiologia do Solo
Bacillus/isolamento & purificação
Transporte Biológico
Raízes de Plantas/microbiologia
Paenibacillus/isolamento & purificação
Inoculantes Agrícolas/metabolismo
Responsável: BR1.1 - BIREME

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Loureiro, Edvaldo Carlos Brito
Texto completo
Id: biblio-945881
Autor: Alves, Willy Cristiano Luz; Gorayeb, Inocêncio de Sousa; Loureiro, Edvaldo Carlos Brito.
Título: Bactérias isoladas de culicídeos (Diptera: Nematocera) hematófagos em Belém, Pará, Brasil / Isolated bacteria from hematophagous Culicidae (Diptera: Nematocera) in Belém, Pará State, Brazil
Fonte: Rev. Pan-Amazônica Saúde (Online);1(1):131-142, 2010. graf.
Idioma: pt.
Resumo: As bactérias estão abundantemente distribuídas na natureza, participam da microbiota humana e animal, e algumas causam doenças. Têm a sua distribuição ampliada quando são veiculadas por algum vetor. Os dípteros da família Culicidae são vetores em epidemias de grande interesse para a saúde pública; no entanto, a associação entre bactérias e culicídeos foi pouco abordada. Para avançar conhecimento sobre esta temática, foi proposto isolar e identificar bactérias que estão sendo transportadas em culicídeos hematófagos em Belém, Pará. As coletas dos culicídeos foram realizadas com armadilha luminosa do tipo CDC, em oito pontos de coleta da área metropolitana de Belém, que apresentam características ambientais distintas. Foram coletados 296 exemplares de culicídeos, sendo que nove foram identificados até o nível de espécie e quatro até o subgênero. Destas amostras foi possível identificar 17 espécies de bactérias, outras sete somente foram identificadas até o gênero. Culex quinquefasciatus e Anopholes aquasalis foram os mais abundantes entre os culicídeos. As espécies de bactérias Gemella haemolysans e Enterobacter cloacae foram as mais abundantes nas amostras. Os pontos de coleta localizados nos bairros da Terra Firme e Curió Utinga foram os que apresentaram maior diversidade de espécies de culicídeos.

Bacteria are largely distributed in nature, especially when carried by a vector. They comprise large portions of the human and animal microbiota, and some cause diseases. The diptera of the family Culicidae are directly involved in the vectoring of epidemics of great interest for public health. However, the association between bacteria and Culicidae has been scarcely studied. In order to deepen the knowledge on this subject, we isolated and identified bacteria which have been transported in hematophagous Culicidae in the City of Belém, Pará State. The collection of 296 mosquitoes was carried out using a CDC light trap in eight collection localities, which presented different environmental characteristics within the metropolitan area of Belém. Some were identified to the species level (9) and others to the subgenus (4). It was possible to identify 17 species of bacteria; seven bacteria could only be identified up to their genus. Culex quinquefasciatus and Anopheles aquasalis were the most frequent Culicidae. The most frequent species of bacteria found in the samples were Gemella haemolysans and Enterobacter cloacae. The collection localities in the Terra-firme and Curió-utinga districts presented the largest diversity of species of Culicidae.
Descritores: Bactérias
Insetos Vetores
-Ecossistema Amazônico
Transporte Biológico
Limites: Humanos
Responsável: BR275.1 - Biblioteca

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Texto completo
Id: biblio-916041
Autor: Silva, Cintia Pereira da.
Título: Bioacessibilidade dos polifenóis do jatobá-do-cerrado (Hymenaea Stigonocarpa Mart. ) e seus efeitos em genes relacionados à absorção de glicose em células Caco-2 / Bioaccessibility of polyphenols from jatobá-do-cerrado (Hymenaea stigonocarpa Mart. ) and its effects on genes related to glucose uptake in Caco-2 cells.
Fonte: São Paulo; s.n; 2018. 108 p.
Idioma: pt.
Tese: Apresentada a Universidade de São Paulo. Faculdade de Saúde Pública. Departamento de Nutrição para obtenção do grau de Doutor.
Resumo: Introdução: O diabetes mellitus (DM) está associado a complicações que comprometem a qualidade de vida e a sobrevida dos indivíduos. Além disso, acarreta elevados custos para o controle metabólico e o tratamento de suas complicações, sendo assim caracterizado como um problema de saúde pública. A regulação da digestão e da absorção intestinal dos carboidratos, com vista a manter a homeostase da glicose plasmática, constituem importantes estratégias de proteção em condições clínicas como o diabetes tipo 2 (DM2), obesidade e síndrome metabólica. Os compostos fenólicos compreendem um grupo complexo de fitoquímicos bioativos presentes nos vegetais. Estudos in vitro e in vivo têm demonstrado que os compostos fenólicos inibem a atividade de carbohidrases (α-amilase e α-glicosidase) e o transporte intestinal de glicose mediado pelos transportadores SGLT1 e GLUT2. O cerrado brasileiro compreende uma larga biodiversidade, porém, apesar de muitas espécies terem sido identificadas, o seu potencial nutritivo e funcional ainda é pouco conhecido. Dentre estas espécies nativas é destacado o jatobá-do-cerrado. O jatobá-do-cerrado é uma leguminosa nativa brasileira, cuja a polpa farinácea que envolve suas sementes apresenta quantidades significativas de compostos fenólicos, podendo ter um potencial efeito sobre o metabolismo da glicose. Objetivos: Verificar os efeitos dos compostos fenólicos da farinha de jatobá-do-cerrado na digestão de carboidratos e na captação de glicose em células intestinais Caco-2. Metodologia: Os compostos fenólicos da farinha de jatobá foram obtidos por extração sequencial com as soluções de etanol (60%) e acetona (70%). Em seguida, o extrato foi digerido utilizando enzimas (α-amilase, pepsina e pancreatina) em pH fisiológico. Os compostos fenólicos presentes no extrato antes e após a digestão foram identificados por cromatografia líquida de ultra performance - espectrômetro de massas (UPLC-MS/MS). Foi avaliada a capacidade de inibição dos extratos de jatobá digeridos em relação à atividade das enzimas α-amilase e α-glicosidase. Células intestinais Caco-2 foram incubadas com diferentes concentrações (0,05 mg/mL - 0,1 mg/mL) de extratos de farinha de jatobá digeridos em diferentes tempos (30 min, 2h e 12 h) para a avaliação da captação de glicose e da expressão gênica dos transportadores de glicose SGLT1 e GLUT2. Resultados: 44 compostos fenólicos foram identificados, dentre eles, a principal classe presente são os flavonoides. Compostos como o ácido cafeico, o kaempferol, quercetina-3- rutinosideo e a quercetrina estavam presentes no extrato antes da digestão. O conteúdo de compostos fenólicos do extrato foi reduzido após a digestão, entretanto o mesmo ainda apresentou compostos de relevância biológica como o ácido p-cumárico, ácido 3-o-feruloilquinico, theaflavina, crisina e grandinina que já apresentaram efeito positivo sobre o metabolismo da glicose in vitro em outros trabalhos. Os extratos fenólicos de jatobá após a digestão in vitro inibiram significativamente a atividade das enzimas α-amilase (76 e 91%) e α- glicosidase (53 e 77%). Os extratos também demonstraram inibir significativamente tanto a captação de glicose independente de sódio quanto a expressão gênica dos transportadores de glicose SGLT1 e GLUT2 de maneira dose-dependente. Conclusão: Este é o primeiro trabalho que identificou os compostos fenólicos presentes na farinha de jatobá. A partir do exposto, podemos concluir que a farinha de jatobá apresenta potencial benefício a saúde devido ao seu conteúdo de compostos fenólicos e a capacidade destes compostos de regular a digestão e a absorção de carboidratos in vitro

Introduction: Diabetes mellitus (DM) is associated with complications that decrease the quality of life and survival of individuals. In addition, it entails high costs for metabolic control and treatment of its complications, thus being characterized as a public health problem. The regulation of digestion and intestinal absorption of carbohydrates to maintain plasma glucose homeostasis are important strategies for protection in chronic diseases such as type 2 diabetes (DM2), obesity and metabolic syndrome. Phenolic compounds are a complex group of chemical substances present in plants. In vitro and in vivo studies have shown that phenolic compounds are able to inhibit the activity of carbohydrases (α-amylase and α-glycosidase) and the intestinal transport of glucose mediated by SGLT1 and GLUT2 transporters. Brazilian Cerrado present a large biodiversity, but although many species have been identified, its nutritional and functional potential is still little known. Among these native species is the jatobá-docerrado. Jatobá-do-cerrado is a brazilian native legume, whose farinaceous pulp that surrounds its seeds presents significant amounts of phenolic compounds and may have a potential effect on glucose metabolism. Objectives: To verify the effects of phenolic compounds from jatobá-do-cerrado flour in the digestion of carbohydrates and uptake of glucose in Caco-2 intestinal cells. Methods: Phenolic compounds of jatobá flour were obtained by sequential extraction with olutions of ethanol (60%) and acetone (70%). The extract was digested using enzymes (α-amylase, pepsin and pancreatin) at physiological pH. The phenolic compounds present in the extract before and after the digestion were identified by liquid chromatography of ultra-performance - mass spectrometer (UPLCMS / MS). The ability of inhibition of the extracts of jatobá digested in relation to the activity of α-amylase and α-glycosidase enzymes was evaluated. Caco-2 intestinal cells were incubated with different concentrations of jatobá flour extracts (0.1 mg / mL - 0.05 mg / mL) for different time (30 min, 2 h and 12 h) to the evaluation of facilitated uptake (sodium-free buffer) and gene expression of SGLT1 and GLUT2 glucose transporters. Results: 44 phenolic compounds have been identified, among them a major class present are flavonoids. Compounds such as caffeic acid, quercetin-3-rutinoside and quercetrine were present in the extract before in vitro digestion. The content of phenolic compounds of the extract after digestion was reduced. However, the extract presents compounds with biological activity such as p-coumaric acid, 3-o-feruloylquinic acid , theaflavin, chrysin and grandinine, which already presented positive effects on glucose metabolism in vitro in other studies. Phenolic extracts of jatobá after in vitro digestion inhibited the activity of α-amylase (76 and 91%) and α-glycosidase (53 and 77%). The extracts also shown to inhibit both glucose uptake and gene expression of glucose transporters SGLT1 and GLUT2 in a dose-dependent manner. Conclusion: This is the first work that identified the phenolic compounds present in jatobá flour. Thus, we can conclude that the jatobá flour presents potential health benefit by modulate digestion and the absorption of carbohydrates in vitro
Descritores: Absorção Fisiológica/genética
Células CACO-2
Diabetes Mellitus
Compostos Fenólicos
-Disponibilidade Biológica
Transporte Biológico
Responsável: BR67.1 - CIR - Biblioteca - Centro de Informação e Referência
BR67.1; Dr. 419; BR67.1; Dr. evisada. 419

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Texto completo SciELO Chile
Texto completo
Id: lil-762679
Autor: Figueroa, Catalina; Droppelmann, Katherine; Quiñones, Verónica; Amigo, Ludwig; Mendoza, Camila; Serrano, Valentina; Véjar, Margarita; Maiz, Alberto; Rigotti, Attilio.
Título: El ácido nicotínico aumenta el transporte celular de colesterol de las lipoproteínas de alta densidad en pacientes con hipoalfalipoproteinemia / Nicotinic acid increases cellular transport of high density lipoprotein cholesterol in patients with hypoalphalipoproteinemia
Fonte: Rev. méd. Chile;143(9):1097-1104, set. 2015. ilus, tab.
Idioma: es.
Projeto: FONDECYT; . Merck S.A. Chile; . Universidad Católica de Chile. Dirección de Investigación, Escuela de Medicina.
Resumo: Background: Plasma high density lipoproteins (HDL) are involved in reverse cholesterol transport mediated by the scavenger receptor class B type I (SR-BI). Nicotinic acid increases HDL cholesterol levels, even though its specific impact on SR-BI dependent-cellular cholesterol transport remains unknown. Aim: To determine the effect of nicotinic acid on HDL particle functionality in cholesterol efflux and uptake mediated by SR-BI in cultured cells in hypoalphalipoproteinemic patients. Material and Methods: In a pilot study, eight patients with low HDL (≤ 40 mg/dL) were treated with extended release nicotinic acid. HDL cholesterol and phospholipid levels, HDL2 and HDL3 fractions and HDL particle sizes were measured at baseline and post-therapy. Before and after nicotinic acid treatment, HDL particles were used for cholesterol transport studies in cells transfected with SR-BI. Results: Nicotinic acid treatment raised total HDL cholesterol and phospholipids, HDL2 levels as well as HDL particle size. Nicotinic acid significantly increased HDL cholesterol efflux and uptake capacity mediated by SR-BI in cultured cells. Conclusions: Nicotinic acid therapy increases SR-BI-dependent HDL cholesterol transport in cultured cells, establishing a new cellular mechanism by which this lipid-lowering drug appears to modulate HDL metabolism in patients with hypoalphalipoproteinemia.
Descritores: HDL-Colesterol/metabolismo
Lipoproteínas HDL/metabolismo
-Transporte Biológico
HDL-Colesterol/efeitos dos fármacos
Projetos Piloto
Receptores Depuradores Classe B/metabolismo
Limites: Idoso
Pessoa de Meia-Idade
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central

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Texto completo SciELO Venezuela
Texto completo
Id: lil-749976
Autor: Castro-Rojas, Carlos; Ortiz-López, Rocío; Rojas-Martínez, Augusto.
Título: Farmacogenómica del tratamiento de primera línea en el cáncer gástrico: avances en la identificación de los biomarcadores genómicos de respuesta clínica / Pharmacogenomics of the first-line treatment for gastric cancer: advances in the identification of genomic biomarkers for clinical response to chemotherapy
Fonte: Invest. clín;55(2):185-202, jun. 2014. ilus, tab.
Idioma: es.
Resumo: Debido a la inespecificidad de los síntomas, el cáncer gástrico (CG) es diagnosticado frecuentemente en etapas avanzadas, lo que da cuenta de los altos índices de mortalidad debido a esta neoplasia a nivel mundial. El esquema de tratamiento adyuvante o neoadyuvante en los países occidentales incluye el uso de fluoropirimidinas citotóxicas y compuestos de platino formadores de aductos en el ADN. La respuesta clínica al tratamiento con estos fármacos depende principalmente de la sensibilidad del tumor, la cual a su vez está condicionada por el nivel de expresión de los blancos terapéuticos y de las enzimas de reparación del ADN. Sumado a esto, algunos polimorfismos de línea germinal en genes asociados al metabolismo y a la respuesta a estos fármacos, han mostrado asociación con respuestas pobres y con el desarrollo de eventos adversos, incluso con resultados fatales. La identificación de biomarcadores genómicos, en la forma de polimorfismos genéticos o la expresión diferencial de genes específicos asociados a la respuesta quimioterapeútica ha sido motivo de intensa investigación como base para la aplicación de la farmacogenómica en el establecimiento de una terapia farmacológica racional y personalizada del CG. Sin embargo, ante la eventual aplicación de la farmacogenómica en el ámbito clínico, es necesario establecer el valor pronóstico real de dichos biomarcadores mediante los estudios de asociación genotipo-fenotipo, así como su prevalencia en el contexto de cada población de pacientes. Estos aspectos son indispensables al evaluar la relación costo-efectividad de la introducción de los productos de la medicina genómica predictiva en el tratamiento del CG.

Gastric cancer (GC) is often diagnosed at later stages due to the lack of specificity of symptoms associated with the neoplasm, causing high mortality rates worldwide. The first line of adjuvant and neoadjuvant treatment includes cytotoxic fluoropyrimidines and platin-containing compounds which cause the formation of DNA adducts. The clinical outcome with these antineoplastic agents depends mainly on tumor sensitivity, which is conditioned by the expression level of the drug targets and the DNA-repair system enzymes. In addition, some germ line polymorphisms, in genes linked to drug metabolism and response to chemotherapy, have been associated with poor responses and the development of adverse effects, even with fatal outcomes in GC patients. The identification of genomic biomarkers, such as individual gene polymorphisms or differential expression patterns of specific genes, in a patient-by-patient context with potential clinical application is the main focus of current pharmacogenomic research, which aims at developing a rational and personalized therapy (i.e., a therapy that ensures maximum efficacy with no predictable side effects). However, because of the future application of genomic technologies in the clinical setting, it is necessary to establish the prognostic value of these genomic biomarkers with genotype-phenotype association studies and to evaluate their prevalence in the population under treatment. These issues are important for their cost-effectiveness evaluation, which determines the feasibility of using these medical genomic research products for GC treatment in the clinical setting.
Descritores: Antineoplásicos/farmacocinética
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico
Neoplasias Gástricas/tratamento farmacológico
-Antineoplásicos/efeitos adversos
Transporte Biológico/genética
Terapia Combinada
Combinação de Medicamentos
Desoxicitidina/efeitos adversos
Desoxicitidina/análogos & derivados
Desoxicitidina/uso terapêutico
Resistencia a Medicamentos Antineoplásicos/genética
Grupos Étnicos/genética
Fluoruracila/efeitos adversos
Fluoruracila/análogos & derivados
Fluoruracila/uso terapêutico
Terapia de Alvo Molecular
Compostos Organoplatínicos/farmacocinética
Ácido Oxônico/farmacocinética
Seleção de Pacientes
Medicina de Precisão
Neoplasias Gástricas/genética
Neoplasias Gástricas/cirurgia
Limites: Humanos
Tipo de Publ: Revisão
Responsável: VE1.1 - Biblioteca Humberto Garcia Arocha

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Texto completo SciELO Brasil
Langoni, Hélio
Biondo, Alexander Welker
Texto completo
Id: lil-742969
Autor: Morikawa, Vivien Midori; Bier, Daniele; Pellizzaro, Maysa; Ullmann, Leila Sabrina; Paploski, Igor Adolfo Dexheimer; Kikuti, Mariana; Langoni, Hélio; Biondo, Alexander Welker; Molento, Marcelo Beltrão.
Título: Seroprevalence and seroincidence of Leptospira infection in dogs during a one-year period in an endemic urban area in Southern Brazil
Fonte: Rev. Soc. Bras. Med. Trop;48(1):50-55, jan-feb/2015. tab.
Idioma: en.
Resumo: INTRODUCTION: Leptospirosis is a zoonosis that affects both humans and animals. Dogs may serve as sentinels and indicators of environmental contamination as well as potential carriers for Leptospira. This study aimed to evaluate the seroprevalence and seroincidence of leptospirosis infection in dogs in an urban low-income community in southern Brazil where human leptospirosis is endemic. METHODS: A prospective cohort study was designed that consisted of sampling at recruitment and four consecutive trimestral follow-up sampling trials. All households in the area were visited, and those that owned dogs were invited to participate in the study. The seroprevalence (MAT titers ≥100) of Leptospira infection in dogs was calculated for each visit, the seroincidence (seroconversion or four-fold increase in serogroup-specific MAT titer) density rate was calculated for each follow-up, and a global seroincidence density rate was calculated for the overall period. RESULTS: A total of 378 dogs and 902.7 dog-trimesters were recruited and followed, respectively. The seroprevalence of infection ranged from 9.3% (95% CI; 6.7 - 12.6) to 19% (14.1 - 25.2), the seroincidence density rate of infection ranged from 6% (3.3 - 10.6) to 15.3% (10.8 - 21.2), and the global seroincidence density rate of infection was 11% (9.1 - 13.2) per dog-trimester. Canicola and Icterohaemorraghiae were the most frequent incident serogroups observed in all follow-ups. CONCLUSIONS: Follow-ups with mean trimester intervals were incapable of detecting any increase in seroprevalence due to seroincident cases of canine leptospirosis, suggesting that antibody titers may fall within three months. Further studies on incident infections, disease burden or risk factors for incident Leptospira cases should take into account the detectable lifespan of the antibody. .
Descritores: Linfócitos B/metabolismo
Poli(ADP-Ribose) Polimerases/metabolismo
-Proteínas Quinases Ativadas por AMP/metabolismo
Apoptose/efeitos dos fármacos
Linfócitos B/patologia
Transporte Biológico/efeitos dos fármacos
Células Cultivadas
Ativação Enzimática/efeitos dos fármacos
Marcação In Situ das Extremidades Cortadas
Camundongos Knockout
Mitocôndrias/efeitos dos fármacos
Fosforilação Oxidativa/efeitos dos fármacos
Poli(ADP-Ribose) Polimerases/genética
Análise de Sobrevida
Limites: Animais
Tipo de Publ: Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME

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Id: lil-741526
Autor: Saffer, Fernanda; Lubianca, José Faibes Lubianca; Rösing, Cassiano; Dias, Caroline; Closs, Luciane.
Título: Predictors of Success in the Treatment of Obstructive Sleep Apnea Syndrome with Mandibular Repositioning Appliance: A Systematic Review
Fonte: Int. arch. otorhinolaryngol. (Impr.);19(1):80-85, Jan-Mar/2015. tab, graf.
Idioma: en.
Resumo: Introduction Obstructive sleep apnea syndrome affects up to 4% of middle-aged men and 2% of adult women. It is associated with obesity. Objective The objective of this article is to review the literature to determine which factors best correlate with treatment success in patients with obstructive sleep apnea syndrome treated with a mandibular repositioning appliance. Data Synthesis A search was performed of the PubMed, Cochrane, Lilacs, Scielo, and Web of Science databases of articles published from January 1988 to January 2012. Two review authors independently collected data and assessed trial quality. Sixty-nine articles were selected from PubMed and 1 from Cochrane library. Of these, 42 were excluded based on the title and abstract, and 27 were retrieved for complete reading. A total of 13 articles and 1 systematic review were considered eligible for further review and inclusion in this study: 6 studies evaluated anthropomorphic and physiologic factors, 3 articles addressed cephalometric and anatomic factors, and 4 studies evaluated variables related to mandibular repositioning appliance design and activation. All the studies evaluated had low to moderate methodologic quality and were not able to support evidence on prediction of treatment success. Conclusion Based on this systematic review on obstructive sleep apnea syndrome treatment, it remains unclear which predictive factors can be used with confidence to select patients suitable for treatment with a mandibular repositioning appliance. .
Descritores: Evolução Biológica
Proteínas de Transporte/química
Modelos Moleculares
-Transporte Biológico/fisiologia
Chlorocebus aethiops
Células COS
Transferência Ressonante de Energia de Fluorescência
Microscopia de Fluorescência
Limites: Animais
Tipo de Publ: Research Support, N.I.H., Extramural
Responsável: BR1.1 - BIREME

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