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Search Results: 1 - 10 of 7526 matches for " Beatriz Aguilera "
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Evaluación de actividad antibacteriana de mieles de Apis mellifera, contra Escherichia coli y Staphylococcus aureus Evaluation of the antibacterial activity of Apis mellifera honey against strains of Escherichia coli and Staphylococcus aureus
Greana Aguilera,Florimar Gil,Ana C González,Beatriz Nieves
Revista del Instituto Nacional de Higiene Rafael Rangel , 2009,
Abstract: La miel de abeja es un fluido dulce y viscoso producido por las abejas a partir del néctar y de la mielada. Se trata de una medicina antigua utilizada principalmente en el tratamiento de heridas, úlceras y quemaduras. En el presente trabajo se evaluó la actividad antimicrobiana de nueve mieles venezolanas, para lo cual se utilizaron cepas ATCC de Escherichia coli y Staphylococcus aureus. Las mieles analizadas se utilizaron concentradas y diluidas (1:2, 1:4, 1:8). Se observó la inhibición del crecimiento de S. aureus en la miel procedente del estado Trujillo sin diluir y en su dilución 1:2, mientras que no se observó inhibición del crecimiento de las cepas de E. coli, por lo que deberían probarse otras bacterias para futuras aplicaciones. Honey is a sweet and viscous fluid produced by bees from nectar and honeydew. It is an ancient natural medicine mainly used to treat wounds, ulcers and burns. In this study we have assessed the antibacterial activity against E. coli and S. aureus of nine Venezuelan honeys participating in the national honey contest year 2005, compared with a control artificial honey. The honeys were tested at three dilutions (1:2, 1:4, 1:8) and undiluted. Only S. aureus was inhibited by one undiluted honey sample and at the 1:2 dilution. The honeys from the contest, were of low therapeutical value against E. coli and S. aureus, but other bacterias should be tested for further applications.
Actividad antibacteriana de Boldoa purpurascens Cav
Rojas Hernández,Nidia M; Matos Aguilera,Mariela; Romeu álvarez,Beatriz;
Revista Cubana de Plantas Medicinales , 2004,
Abstract: the leaves of boldoa purpurascens cav. (nitro) are used in traditional medicine in cuba in form of aqueous decoctions to treat kidney affections with good results. recent studies showed that the extracts from this plant have a high diuretic activity. in the present paper it is evaluated the presence of antibacterial activity of an aqueous extract 20 % from the leaves of boldoa purpurascens against strains of gram positive and gram negative bacteria. it was used the method of radial diffusion in agar medium with cilindrical cuts. no inhibitory activity was detected on any of the 22 bacterial cultures tested. it was concluded that the benefitial effect obtained in kidney diseases is due to the diuretic property of the extracts and not to a direct action on the microorganisms.
ARN interferente: Potenciales usos en genómica funcional y control genético de Hypothenemus hampei (Coleoptera: Scolytinae) RNA interference: potential uses on functional genomics and genetic control of Hypothenemus hampei (Coleoptera: Scolytinae)
CAROLINA AGUILERA G.,BEATRIZ E. PADILLA H.,CLAUDIA P. FLóREZ R.,JOSé D. RUBIO G.
Revista Colombiana de Entomología , 2011,
Abstract: Los organismos eucarióticos, incluidos los insectos, poseen un mecanismo para el silenciamiento de genes específicos mediante peque as secuencias de ARN de doble cadena (ARNdc), proceso conocido como ARN de interferencia (ARNi). El objetivo de esta investigación fue implementar esta herramienta para evaluar genes candidatos que puedan usarse como estrategia genética de control de la broca del café. Se utilizó una metodología de ingesta de gotas con diferentes ARNdc y diferentes concentraciones depositadas en la cavidad preoral de larvas de primer instar de la broca. Luego, las larvas se criaron en una dieta artificial suplementada con los respectivos ARNdc. Previamente, se comprobó la efectividad de la ingesta por vía oral mediante dos estrategias de control: a) ingesta de un compuesto fluorescente (Calcofluor ) en el tracto digestivo del insecto y b) ingesta de una mezcla comercial de inhibidores de proteasas. Los genes seleccionados para el silenciamiento fueron los que codifican en la broca las proteínas mananasa, xilanasa, citocromo P450 mono-oxigenasa (2 genes), ATPasa D, α-tubulina y actina. Se encontró que los ARNdc de los citocromos P450 produjeron el mayor efecto causando una mortalidad de las larvas de un 64% y 52% respectivamente, seguido de los ARNdc de los genes mananasa y xilanasa, con un porcentaje de mortalidad de 37% y 33%, respectivamente, para la máxima concentración evaluada. Eukaryotic organisms, including insects, have a mechanism for specific gene silencing by short sequences of double-stranded RNA (dsRNA), such a process is known as RNA interference (RNAi). The objective of this research was to follow up this technique to screen candidate genes for the genetic control of the coffee berry borer Hypothenemus hampei. A methodology of feeding by oral drops containing different dsRNAs and dsRNAs′ dosages that were placed in the preoral cavity of first instar larvae was used. Then, the larvae were reared on an artificial diet supplemented with the respective dsRNA. Previously, we verified the effectiveness of the dsRNA feeding using two control strategies: a) intake of a fluorescent compound (CalcofluorTM) and b) intake of a commercial mixture of protease inhibitors. The genes coding for mannanase, xylanase, cytochrome P450 mono-oxygenase (two genes), ATPase D, α-tubulin and actin, expressed in the coffee berry borer, were selected for silencing. We found that dsRNA of cytochromes P450 produced the greatest effect, causing larval mortality of 64% and 52% respectively, followed by dsRNA of mannanase and xylanase, with a mortality rate o
Actividad antibacteriana de Boldoa purpurascens Cav Antibacterial activity of Boldoa purpurascens Cav.
Nidia M Rojas Hernández,Mariela Matos Aguilera,Beatriz Romeu álvarez
Revista Cubana de Plantas Medicinales , 2004,
Abstract: Las hojas de Boldoa purpurascens Cav. (nitro) se emplean en medicina tradicional en Cuba en forma de decocciones acuosas para el tratamiento de afecciones renales con buenos resultados. Estudios recientes mostraron que los extractos de esta planta poseen elevada actividad diurética. En el presente trabajo se evalúa la presencia de actividad antibacteriana de un extracto acuoso al 20 % de las hojas de Boldoa purpurascens frente a cepas de bacterias Gram positivas y negativas. Se empleó el método de difusión radial en medio agarizado con cortes cilíndricos. No se detectó actividad inhibitoria sobre ninguno de los 22 cultivos bacterianos probados. Se concluyó que el efecto beneficioso obtenido en las enfermedades renales se debe a la propiedad diurética de los extractos y no a una acción directa sobre los microorganismos. The leaves of Boldoa purpurascens Cav. (nitro) are used in traditional medicine in Cuba in form of aqueous decoctions to treat kidney affections with good results. Recent studies showed that the extracts from this plant have a high diuretic activity. In the present paper it is evaluated the presence of antibacterial activity of an aqueous extract 20 % from the leaves of Boldoa purpurascens against strains of Gram positive and Gram negative bacteria. It was used the method of radial diffusion in agar medium with cilindrical cuts. No inhibitory activity was detected on any of the 22 bacterial cultures tested. It was concluded that the benefitial effect obtained in kidney diseases is due to the diuretic property of the extracts and not to a direct action on the microorganisms.
A forensic pathology approach to sudden death in children and young adults in Biscay and Seville (Spain)
Benito Morentin,Beatriz Aguilera,Ma Paz Suárez-Mier,Pilar Molina
Medwave , 2012,
Abstract: Sudden death (SD) in children and young adults is a complex multifactorial problem that entails medical forensic and socio-familial implications. Forensic pathology plays an important role in these cases due to the fact that they tend to occur unexpectedly, and therefore a postmortem examination is needed to determine cause and mechanism of death. Most of these deaths are of cardiovascular origin and many of them have a hereditary component. The autopsy may be the only way to establish the correct diagnosis of the underlying condition enabling the family to receive proper medical counseling, to identify asymptomatic relatives at risk, and to prevent subsequent deaths. A proper approach requires the collaboration of various medical specialties (coroners, pathologists, pediatricians, cardiologists, microbiologists, geneticians), who must work in coordination in accordance to international protocols. In this article, the epidemiologic and clinical-pathological features of the main conditions that may lead to SD in children and young adults are reviewed and a case series from Seville and Biscay provinces is presented. Finally, the importance of forensic pathology in the management and prevention of these cases is underlined.
Una estrategia poco utilizada en el cuidado de pacientes con enfermedad renal crónica: la educación en grupo y multidisciplinar de pacientes y sus familiares A little-used strategy in caring for patients with chronic kidney disease: multidisciplinary education of patients and their relatives
Ana Isabel Aguilera Flórez,Mario Prieto Velasco,Luis González Romero,Beatriz Abad Toral
Enfermería Nefrológica , 2012,
Abstract: Los equipos multidisciplinares, son una estrategia sugerida hace ya más de un decenio por grupos canadienses. Los pacientes tratados en un ámbito multidisciplinar demuestran un mejor conocimiento de la enfermedad renal crónica y mejores parámetros bioquímicos. Los objetivos fueron, aumentar los conocimientos, en nuestros pacientes con enfermedad renal crónica avanzada y su familia, sobre su enfermedad, su correcto cuidado y sobre el tratamiento renal sustitutivo, a través de la educación en grupo. Valorar si la información aumenta el nivel de ansiedad de los pacientes. Valorar el grado de satisfacción con la intervención educación en grupo. Estudio retrospectivo que contó con 19 pacientes, asistentes a los dos cursos. Se realizaron dos cuestionarios al inicio y al final del curso sobre nivel de conocimientos y el nivel de ansiedad (Inventario de Ansiedad Estado-Rasgo). Al final de cada edición, se realizó un cuestionario de evaluación. Las variables estudiadas fueron el sexo, edad, nivel de estudios y asistencia de un familiar. El nivel de conocimientos alcanzó una diferencia estadísticamente significativa entre ambos cuestionarios (inicial-final) (p = 0,013). Los resultados obtenidos en la evaluación del nivel de ansiedad mostraron un ligero incremento en la ansiedad. El cuestionario de satisfacción mostró una valoración muy positiva de la intervención. Podemos concluir, que la mayoría de los pacientes han aumentado sus conocimientos sobre enfermedad renal crónica avanzada y técnicas de sustitución, han demostrado una alta satisfacción con la experiencia de esta intervención y la mayoría han experimentado un ligero aumento de ansiedad. Multidisciplinary teams are a strategy that was suggested more than ten years ago by Canadian groups. Patients treated in an multidisciplinary environment show better knowledge of CKD and better biochemical parameters. The goals were to increase knowledge in our patients with ACKD and their family about their illness, correct care and renal replacement therapy, through group education, to evaluate whether the information increased the patients' level of anxiety and to evaluate the degree of satisfaction with the group education. This is a retrospective study carried out with 19 patients, who attended both courses. Two questionnaires were completed at the start and end of the course on the level of knowledge and level of anxiety (State-Trait Anxiety Inventory STAI). At the end of each course, an assessment questionnaire was completed. The variables studied were sex, age, level of education and presence of a relative. The
Evaluación de actividad antibacteriana de mieles de Apis mellifera, contra Escherichia coli y Staphylococcus aureus
Aguilera,Greana; Gil,Florimar; González,Ana C; Nieves,Beatriz; Rojas,Yenny; Rodríguez M,Antonio; Vit,Patricia;
Revista del Instituto Nacional de Higiene Rafael Rangel , 2009,
Abstract: honey is a sweet and viscous fluid produced by bees from nectar and honeydew. it is an ancient natural medicine mainly used to treat wounds, ulcers and burns. in this study we have assessed the antibacterial activity against e. coli and s. aureus of nine venezuelan honeys participating in the national honey contest year 2005, compared with a control artificial honey. the honeys were tested at three dilutions (1:2, 1:4, 1:8) and undiluted. only s. aureus was inhibited by one undiluted honey sample and at the 1:2 dilution. the honeys from the contest, were of low therapeutical value against e. coli and s. aureus, but other bacterias should be tested for further applications.
Musculatura de los arcos branquiales, arco hioedeo y opérculo en peces sciaenidae del Atlantico oeste y rios de America
Aguilera, Orangel;
Revista Brasileira de Zoologia , 1987, DOI: 10.1590/S0101-81751987000200002
Abstract: a musculatura que serve aos arcos branquiais, arco hióideo e opérculo nos 22 gêneros marinhos do atlantico oeste e nos 4 gêneros dos rios da américa se caracterizam por apresentar a origem, percurso e inser??o das se??es e subse??es musculares de maneira geral comum para todos os sciaenidae estudados. porém, existem algumas varia??es relacionadas principalmente com o grau de desenvolvimento desta musculatura, que para efeitos da descri??o permite o agrupamento dos diferentes gêneros em três (3) grupos, o grupo "macrodon" (macrodon, cynoscion, larimus, nebris, isopistus, plagioscion, lonchurus, stellifer, odontoscion, bairdiella e corvulla), grupo "micropogonias" (micropogonias, umbrina, equetus, pareques, leiostomus, sciaena, ctenosciaena, pachyurus, pachypops, menticirrhus, paralonchurus e ophioscion) e grupo "pogonias" (pogonias e aplodinotus), mas este último se afasta do padr?o geral devido à fus?o dos quintos ceratobranquiais e ao desenvolvimento de um processo ventral no mesmo que determina algumas varia??es críticas a respeito da origem e inser??o dos músculos que o servem.
Participación ciudadana en el gobierno de Bachelet: consejos asesores presidenciales
Carolina AGUILERA
América Latina Hoy , 2009,
Abstract: RESUMEN: En el artículo se exponen los resultados preliminares de un estudio que analiza tres consejos asesores del gobierno de Michelle Bachelet (2006-2010) en Chile. Estos consejos tenían el mandato de formular políticas públicas en temas centrales del programa de gobierno: previsión, políticas de infancia y educación. Además, tenían el mandato de ser consejos que contaran con una amplia participación ciudadana. Desde el discurso político del gobierno estos consejos se presentaron como parte de una nueva práctica del ejercicio del poder político estatal para abrir espacios de participación ciudadana directa en el proceso de políticas públicas. El artículo argumenta (a) que en la práctica dichos mecanismos no operaron como foros participativos, sino como consejos de expertos con acotada amplitud ideológica (2 casos); y (b) que estas instancias presentan una relación Estado-sociedad vertical en el proceso de políticas públicas. ABSTRACT: This article presents the preliminary results of a study about three advisory boards appointed by Michelle Bachelet’s government (2006-2010) in Chile. Those boards were commanded to elaborate public policy proposals in key areas of her government plan: pension system, infant policies and education. The commissions were intended to include a broad participation of citizens. The political discourse of the government presented them as part of a new form to exercise political power by the State by opening spaces for direct citizen participation in policy making processes. The article argues that (a) those mechanisms did not function as participatory forums but as expert advisory boards with a narrow ideological scope (2 cases); and (b)that in terms of the relationship between State and society, these mechanisms produce a vertical relationship in the political process.
Animal Concepts: Psychological Theories, Pluralism and Division of Labor.
Aguilera, Mariela
Revista Argentina de Ciencias del Comportamiento , 2011,
Abstract: Charter and Heyes (1994) claim that the idea of animal concepts has no sense since it cannot fit with any of the current psychological theories of concepts (prototype, exemplar and definitional theories). But, as I claim, the problem of animal concepts is related to the problem of conditions of concept possession, which has been widely studied by philosophical theories. Psychological theories of concepts have focused on the nature of concepts; so they are inadequate for answering such problem. Nevertheless, it does not mean the labors of both disciplines must be unrelated. Instead, by adopting pluralism about concepts –inspired by recent empirical research on psychology of concepts– it is possible to articulate both disciplines. Besides, some methodological consequence on psychology of concepts should follow from the debate on animal concepts.
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