Epilepsia e comorbilidades psiquiátricas

Introdução: A epilepsia é uma doença neu- rológica crónica prevalente. Devido a fatores biológicos, psicológicos e sociais, os afetados pela doença apresentam maior susceptibili- dade de desenvolvimento de morbilidades psi- quiátricas. Objetivos: Revisão crítica da associação entre epilepsia e patologia psiquiátrica, permitindo aos clínicos uma abordagem mais consciente e informada. Métodos: Os artigos incluídos foram selec- cionados através da base de dados Pubmed com a query “((“Epilepsy”[Mesh]) AND “Mental Disorders”[Mesh]) AND “Comor- bidity”[Mesh]”. Adicionalmente foram con- sultados relatórios oficiais da Internacional League Against Epilepsy e World Health Or- ganization. Resultados e Conclusões: Cerca de 15% a 70% dos doentes com epilepsia apresentam patologia psiquiátrica, que pode ser classifi- cada em peri-ictal ou inter-ictal. A depressão é a patologia mais frequente, podendo ter uma prevalência de 70%, seguida das pertur- bações de ansiedade. A relação entre epilepsia e psicose poderá dever-se ao papel etiológico comum da patologia cerebral subjacente. As crises não epiléticas psicogénicas configuram um desafio diagnóstico e terapêutico, tendo uma apresentação clínica sugestiva de cri- ses epiléticas mas sem as alterações eletro- fisiológicas correspondentes, podendo surgir em doentes com e sem epilepsia. Apesar da sua heterogeneidade, os diferentes estudos globalmente evidenciam uma prevalência aumentada de patologia psiquiátrica em doentes com epilepsia. A natureza da relação entre estas patologias ainda não está inequi- vocamente esclarecida, revelando a insufi- ciência de conhecimento sobre esta temática. O presente trabalho reforça a necessidade da intervenção multidisciplinar por parte da neurologia, psiquiatria e psicologia, em indi- víduos com epilepsia e patologia psiquiátrica concomitante.

Tradução parcial comentada do estudo Emigrantes Deportados nos Açores

Dissertação de Mestrado, Tradução e Assessoria Linguística, 13 de Junho de 2016, Universidade dos Açores.

Purificação e caracterização parcial de uma B-D glicosidase de Artemia franciscana com ação sobre celobiose e lactose

-D-glucosidase (EC 3.2.1.21) is one of the most interesting glycosidases, especially for hydrolysis cellobiose releasing glucose, is last step degradation of cellulose. This function makes the -D-glucosidase is of great interest as a versatile industrial biocatalyst, being critical to various bio-treatment / biorefinery processes, such as bioethanol production. Hen in the report, a -D-glucosidase was extracts from protein extracted of the invertebrate marine Artemia franciscana was purified and characterized with a combination of precipitation with ammonium sulfate (0 - 30%, 30 to 50%, 50 to 80%), the fraction saturated in the range of 30 to 50% (called F-II) was applied in a molecular exclusion chromatography, in Sephacryl S-200, the fractions corresponding to the first peak of activity of -D-glucosidase were gathered and applied in a chromatography of ion exchange in Mono Q; the third peak this protein obtained chromatography, which coincides with the peak of activity of -D-glucosidase was held and applied in a gel filtration chromatography Superose 12 where the first peak protein, which has activity of -D-glucosidase was rechromatography on Superose 12. This enzyme is probably multimerica, consisting of three subunit molecular mass of 52.7 kDa (determined by SDS-PAGE) with native molecular mass of 157 kDa (determined by gel filtration chromatography on Superose 12 under the system FPLC). The enzyme was purified 44.09 times with a recovery of 1.01%. Using up p-nitrophenyl-β-D-glucopiranoside as substrate obtained a Km apparent of 0.229 mM and a Vmax of 1.109 mM.60min-1.mL-1mM. The optimum pH and optimum temperature of catalysis of the synthetic substrate were 5.0 and 45 °C, respectively. The activity of the -D-glucosidase was strongly, inhibited by silver nitrate and N- etylmaleimide, this inhibition indicates the involvement of radical sulfidrila the hydrolysis of synthetic substrate. The -D-glucosidase of Artemia franciscana presented degradativa action on celobiose, lactose and on the synthetic substrate -nitrophenyl-β-D-glucopiranoside indicating potential use of this enzyme in the industry mainly for the production of bioethanol (production of alcohol from the participating cellulose), and production hydrolysate milk (devoid of milk lactose)

Caracterização parcial e atividades farmacológicas do extrato rico em polissacarídeos sulfatatos da angiosperma marinha Halodule wrightii

Sulfated polysaccharides (PS) are biomolecules with a great biotechnological potential. There are few data about PS from high plants. In addition, pharmacological activities of PS from plants have not been carrying out. The aim of this work was extract PS from the angiosperm Halodule wrightii and study their anticoagulant and antioxidant activities. Histological analysis showed the presence of the PS manly in the roots. A polysaccharide-rich extract was obtained from H. wrightii by proteolysis followed by methanol and TCA precipitation. Chemical, infra-red analysis and agarose gel electrophoresis in 1.3 diaminopropane acetate buffer confirmed the presence of sulfated polysaccharides made by glucose, galactose, xylose and sulfate residues in the proportion 1: 0,9: 1: 1. In addition polyacrilamide electrophoresis have shown that extract is mainly compose by 11kDa sulfated polysaccharides. Pharmacological analysis have shown total antioxidant capacity (CAT) that resulted in 15,21 μg for equivalent of ascorbic acid, scavenging activity of the DPPH radical with 41,36 % of scavenging, activity of reducing power with the maximum of 0,290 nm (50 % of vitamin C activity) and scavenging activity superoxide radical (O2-) with a maximum of 32,23 %. Chelating activity of metal less than 4% and scavenging activity of the radical hydroxyl (OH-) less than 2%. Time of activated partial tromboplastin (aPTT) doubling the time of coagulation from 20μg of and protrombin time (PT) was not present. The data indicate that PS from Halodule wrightii could be considered for future applications in medicine, food production or cosmetic industry

Caracterização parcial e atividades farmacológicas do extrato rico em polissacarídeos sulfatados da angiosperma marinha Halodule wrightii

Sulfated polysaccharides (PS) are biomolecules with a great biotechnological potential. There are few data about PS from high plants. In addition, pharmacological activities of PS from plants have not been carrying out. The aim of this work was extract PS from the angiosperm Halodule wrightii and study their anticoagulant and antioxidant activities. Histological analysis showed the presence of the PS manly in the roots. A polysaccharide-rich extract was obtained from H. wrightii by proteolysis followed by methanol and TCA precipitation. Chemical, infra-red analysis and agarose gel electrophoresis in 1.3 diaminopropane acetate buffer confirmed the presence of sulfated polysaccharides made by glucose, galactose, xylose and sulfate residues in the proportion 1: 0,9: 1: 1. In addition polyacrilamide electrophoresis have shown that extract is mainly compose by 11kDa sulfated polysaccharides. Pharmacological analysis have shown total antioxidant capacity (CAT) that resulted in 15,21 μg for equivalent of ascorbic acid, scavenging activity of the DPPH radical with 41,36 % of scavenging, activity of reducing power with the maximum of 0,290 nm (50 % of vitamin C activity) and scavenging activity superoxide radical (O2-) with a maximum of 32,23 %. Chelating activity of metal less than 4% and scavenging activity of the radical hydroxyl (OH-) less than 2%. Time of activated partial tromboplastin (aPTT) doubling the time of coagulation from 20μg of and protrombin time (PT) was not present. The data indicate that PS from Halodule wrightii could be considered for future applications in medicine, food production or cosmetic industry

Purificação e caracterização parcial de uma Fucana C de Dictyota mentrualis e estudo do seu efeito antiinflamatório e nociceptivo

In recent years, sulfated polysaccharides from marine algae have emerged as an important class of natural biopolymers with potential application in human and veterinary health care, while taking advantage of the absence of potential risk of contamination by animal viruses. Among these, fucans isolated from the cell walls of marine brown alga have been study due to their anticoagulant, antithrombotic, anti-inflammatory and antiviral activities. These biological effects of fucans have been found to depend on the degree of sulfation and molecular size of the polysaccharide chains. In the present study, we examined structural features of a fucan extracted from brown alga Dictyota menstrualis and its effect on the leukocyte migration to the peritoneum. The sulfated polysaccharides were extracted from the brown seaweed by proteolytic digestion, followed by sequential acetone precipitation producing 5 fractions. Gel lectrophoresis using 0.05 M 1,3-diaminopropane-acetate buffer, pH 9.0, stained with 0.1% toluidine blue, showed the presence of sulfated polysaccharides in all fractions. The chemical analyses demonstrated that all fractions are composed mainly of fucose, xylose, galactose, uronic acid, and sulfate. Electrophoresis in agarose gel in three different buffers demonstrated that the fraction 2.0v have only one population of fucan. This compound was purify by exclusion molecular. It has shown composition of fucose, xilose, sulfate and uronic acid in molar ration of 1.0: 1.7: 1.1: 0.5 respectively. The effect of this heterofucan on the leukocyte migration was observed 6h after zymozan (mg/g) administration into the peritoneum. The heterofucan showed higher antimigratory activity, it decrease the migration of leukocyte in 83.77% to peritoneum. The results suggest that this fucan is a new antimigratory compound with potential pharmacological appications

Alteraciones en los estudios de neuroimágenes en pacientes pediátricos con diagnóstico de epilepsia, en el Hospital Nacional de Niños Benjamín Bloom, en el período de 2005 a 2010

En 1973 la Liga Internacional contra la Epilepsia (ILAE) y la Organización Mundial de la Salud (OMS), definen a la epilepsia como una afección crónica de carácter recurrente con etiologías diversas, caracterizada por crisis o paroxismos generados por una descarga excesiva e hipersincrónica de un grupo de neuronas cerebrales con expresión clínica y para clínicas variables. La presencia de 2 o más crísis separadas al menos por 24 horas, constituye la epilepsia. En el presente estudio se describen algunas características demográficas como la edad y el sexo de pacientes con diagnóstico de epilepsia, vistos en la consulta externa del Hospital Nacional de Niños Benjamín Bloom, además, otros datos como lo son la edad de inicio de las crísis convulsivas, las características fisiopatológicas de éstos episodios, así como los resultados de los estudios de neuroimagen practicados en estos pacientes en el contexto del estudio. Se realizó una investigación transversal, retrospectiva y descriptiva, cuya población elegible fueron aquellos pacientes entre las edades de 2 meses a 18 años de edad, con diagnóstico de epilepsia, con neurodesarrollo normal para la edad, con algún estudio de neuroimagen y que además continúen sus controles en la consulta externa del Hospital Benjamín Bloom. Se realizó revisión de expedientes sin tener contacto con los pacientes, no hubo incentivos económicos que sesgaran los resultados. Se obtuvieron datos tales como la edad de inicio de la actividad convulsiva, encontrando que la mayoría inicio antes de cumplir 10 años de edad. Además en cuanto al sexo, se presentó más frecuentemente en los varones con un 58% de la muestra, mientras que el restante 42%correspondió a las niñas. Se destacó que únicamente en el 16% de los casos se notificaron alteraciones cerebrales estructurales, situación que es respaldada por otros estudios de corte internacional cuya seriedad es difícil de cuestionar. En general concluimos que es necesaria una normativa institucional que determine claramente en que situaciones específicas están indicados los estudios y neuroimagen en el contexto de investigación de los cuados epilépticos.

Purificação e caracterização parcial de duas N-acetil-ß-hexosaminidases do Equinoderma marinho Echinometra lucunter

Two b-N-acetylhexosaminidases (F11 e F15) were purified from Echinometra lucunter gonads extracts. The purified enzymes were obtained using ammonium sulfate fractionation, followed by gel filtration chromatographies (Sephacryl S-200, Sephadex G-75 and Sephacryl S-200). The F11 fraction was purified 192.47 -fold with a 28.5% yield, and F15 fraction 85.41 -fold with a 32.3% yield. The molecular weights of the fractions were 116 kDa for F11 and 42 kDa for F15 using SDS-PAGE. In Sephacryl S-200, F15 was 84 kDa, indicating that it is a dimeric protein. When p-nitrophenyl-β-D-glycosaminide was used as substrate, we determined an apparent Km of 0.257 mM and Vmax of 0.704 for F11 and for F15 the Km was 0.235 mM and Vmax of 0.9 mM of product liberated by hour. Both enzymes have optimum pH and temperature respectively at 5.0 and 45 °C. The enzymes showed inhibition by silver nitrate, while the glucuronic acid was a potent activator. The high inhibition of F15 by N-etylmaleimide indicates that sulphydril groups are involved in the catalysis of synthetic substrate

Extração, caracterização estrutural parcial e atividades farmacológicas do olginato obtido da alga marrom Lobophora variegata (Lamouroux) Oliveira Filho, 1977

The alginic acid or alginates are acidic polysaccharides found in brown seaweed widely used in food, cosmetic, medical and pharmaceutical industry. This paper proposes the extraction, chemical characterization and verification of the pharmacological activities of brown seaweed variegata Lobophora . The alginate was extracted from the seaweed Lobophora variegata and part was sulphated for comparative purposes. The native extract showed 42% total sugar, 65% uronic acid, 0,36 % protein and 0% of sulfate, while the sulfate showed 39% , 60%, 0.36% and 27,92 % respectively. The presence of a sulfate group may be observed by the metachromasia with toluidine blue in electrophoresis system and characteristic vibration 1262,34 cm-1 in infrared spectroscopy connections assigned to S = O. We observed the formation of films and beads of native alginate, where more concentrated solution 6% resulted in a thicker and more consistent film. Native alginate showed proliferative activity at concentrations (25 and 50 mcg), (50 mg) and (100 mg) in 3T3 cell line in 24h, 48h and 72h, respectively , as the sulfated (100 mg) in 24 . Also showed antiproliferative or cytotoxic activity in HeLa cells of strain, (25 and 100 mg), (25 and 100 mg) and (25, 50 and 100 mg), to native, now for the sulfate concentrations (100 mg) in 24 (25, 50 and 100 mg) in 48 hours, and (50 and 100 mg ) 72h. For their antioxidant activity, the sulfated alginates have better total antioxidant activity reaching 29 % of the native activity while 7.5 % of activity . For the hydroxyl radical AS showed high inhibition ( between 77-83 % ) in concentrations, but the AN surpassed these numbers in the order of 78-92 % inhibition. The reducing power of AN and AS ranged between 39-82 % . In the method of ferric chelation NA reached 100 % chelating while the AS remained at a plateau oscillating 6.5%. However, in this study , we found alginates with promising pharmacological activities, to use in various industries as an antioxidant / anti-tumor compound

El derecho de consulta como contenido parcial del derecho a la participación de los trabajadores en la empresa

El derecho de consulta tiene una regulación demasiado dispersa. Situarlo en el concepto de participación es tarea de este Trabajo Fin de Grado

El derecho al aborto en Colombia. II Parte: la despenalización parcial

La concepción originaria de la Corte Constitucional, respecto de si el nasciturus es poseedor o no del derecho absoluto a la vida, ha ido cambiando gradualmente a medida que han ido pasando las sentencias que han estudiado el tema. En un principio, se consideraba esta idea como absoluta, al punto de no permitir en ningún caso el atentado contra el nasciturus. Pero la idea ha ido cediendo, y hoy se considera que no se debería punir cuando una mujer se encuentre en extraordinarias circunstancias anormales de motivación y, además, desde el momento en que haya sido víctima de acceso carnal, inseminación o transferencia de óvulo no consentido y malformación grave del feto. Esta posición, llegó a despenalizar parcialmente el delito de aborto, aceptando que el derecho a la vida del nasciturus no es absoluto y por eso en ocasiones debe ceder frente a los derechos de la mujer. Por ello, para una mejor comprensión de la última decisión de la Corte Constitucional en materia de aborto, se analizara, en un primer capítulo, la penalización del aborto en Colombia, antes de evidenciar, en un segundo capítulo, las ventajas y los límites de la Jurisprudencia que despenaliza parcialmente el aborto en el país. Por último en un tercer capítulo, la tendencia mundial hacia la despenalización de la conducta del aborto.

Obtenção de óxidos a base de níquel e cobalto para reação de oxidação parcial do metano

Nickel-based catalysts supported on alumina have been widely used in various reactions to obtain synthesis gas or hydrogen. Usually, higher conversion levels are obtained by these catalysts, however, the deactivation by coke formation and sintering of metal particles are still problems to be solved. Several approaches have been employed in order to minimize these problems, among which stands out in recent years the use of additives such as oxides of alkali metals and rare earths. Similarly, the use of methodologies for the synthesis faster, easier, applicable on an industrial scale and to allow control of the microstructural characteristics of these catalysts, can together provide the solution to this problem. In this work, oxides with spinel type structure AB2O4, where A represents divalent cation and B represents trivalent cations are an important class of ceramic materials investigated worldwide in different fields of applications. The nickel cobaltite (NiCo2O4) was oxides of spinel type which has attracted considerable interest due to its applicability in several areas, such as chemical sensors, flat panel displays, optical limiters, electrode materials, pigments, electrocatalysis, electronic ceramics, among others. The catalyst precursor NiCo2O4 was prepared by a new chemical synthesis route using gelatine as directing agent. The polymer resin obtained was calcined at 350°C. The samples were calcined at different temperatures (550, 750 and 950°C) and characterized by X ray diffraction, measurements of specific surface area, temperature programmed reduction and scanning electron microscopy. The materials heat treated at 550 and 750°C were tested in the partial oxidation of methane. The set of techniques revealed, for solid preparations, the presence of the phase of spinel-type structure with the NiCo2O4 NixCo1-xO solid solution. This solid solution was identified by Rietveld refinement at all temperatures of heat treatment. The catalyst precursors calcined at 550 and 750°C showed conversion levels around 25 and 75%, respectively. The reason H2/CO was around 2 to the precursor treated at 750°C, proposed reason for the reaction of partial oxidation of methane, one can conclude that this material can be shown to produce synthesis gas suitable for use in the synthesis Fischer-Tropsch process

LA AUTONOMIA DE LA COMUNIDAD ES LA ENZIMA DEL DESARROLLO. LOS COSTOS DEL CLIENTELISMO. (AVANCE PARCIAL DE INVESTIGACIÓN)

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