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Search Results: 1 - 10 of 481556 matches for " María del Carmen Ribas ávila "
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Actividad antiinflamatoria de extractos de derivados de la ca?a de azúcar
Tillán Capó,Juana; Ribas ávila,María del Carmen; Castro Méndez,Irma; Carrillo Domínguez,Carmen;
Revista Cubana de Plantas Medicinales , 2002,
Abstract: wistar rats were used in the acute edema of the paw induced by subplantar injection of 0.1 ml of carrageen to evaluate the antiinflammatory activity of dry ethanol extract from sugar cane wax (scee) 500 and 1000 mg/kg, ethanol extract from sugar cane wax obtained in the proportion 1:5 (scee5) and 1:10 (scee10) fresh sample, 200 mg/kg, ethanol extract obtained from cachaza (chee) 500 and 1 000 mg/kg, raw wax (rw) 200 mg/kg, and cachaza oil without solvent (cho) 2.5 and 5.0 ml/kg. the solid substances were prepared at 20 % in propylenglycol and the intraperitoneal administration was used in all cases 30 min before the edema induction. it was observed that dry wax and the dry and fresh ethanol extracts produced a significant reduction of the edema of the rat's paw induced by carrageen. as regards cachaza, only the ethanol extract and the oil assayed at doses of 500 mg/kg and 2.5 ml/kg of body weight, respectively, did not show any marked reduction of edema. it was concluded that the antiinflamatory susbstances are mostly found in wax and that the ratio wax:ethanol 1:5 may be used to obtain them.
Actividad antiinflamatoria de extractos de derivados de la ca a de azúcar
Juana Tillán Capó,María del Carmen Ribas ávila,Irma Castro Méndez,Carmen Carrillo Domínguez
Revista Cubana de Plantas Medicinales , 2002,
Abstract: Se emplearon ratas Wistar en el edema agudo de la pata inducido por inyección subplantar de 0,1 mL de carragenina para evaluar la actividad antiinflamatoria de extracto estanólico de la cera de ca a seco (EECC) 500 y 1 000 mg/kg, extracto etanólico de la cera de ca a extraído en la proporción 1:5 (EECC5) y 1:10 (EECC10) muestra fresca, 200 mg/kg, extracto etanólico obtenido de la cachaza (EECH) 500 y 1 000 mg/kg, cera cruda (CC) 200 mg/kg y aceite de cachaza sin solvente (ACH) 2,5 y 5,0 mL/kg; las sustancias sólidas se prepararon al 20 % en propilenglicol y en todos los casos se utilizó la administración intraperitoneal 30 min antes de la inducción del edema. Se tuvo como resultado que tanto la cera cruda como los extractos etanólicos secos y los frescos mostraron disminución significativa del edema de la pata de la rata inducido por carragenina. En el caso de la cachaza solo el extracto etanólico y el aceite ensayados a las dosis de 500 mg/kg y 2,5 mL/kg de peso corporal respectivamente no mostraron disminución significativa del edema. Los resultados anteriores indicaron que las sustancias antiinflamatorias se encuentran en mayor proporción en la cera y es posible utilizar la relación cera:etanol 1:5 para obtener estas. Wistar rats were used in the acute edema of the paw induced by subplantar injection of 0.1 mL of carrageen to evaluate the antiinflammatory activity of dry ethanol extract from sugar cane wax (SCEE) 500 and 1000 mg/kg, ethanol extract from sugar cane wax obtained in the proportion 1:5 (SCEE5) and 1:10 (SCEE10) fresh sample, 200 mg/kg, ethanol extract obtained from cachaza (CHEE) 500 and 1 000 mg/kg, raw wax (RW) 200 mg/kg, and cachaza oil without solvent (CHO) 2.5 and 5.0 mL/kg. The solid substances were prepared at 20 % in propylenglycol and the intraperitoneal administration was used in all cases 30 min before the edema induction. It was observed that dry wax and the dry and fresh ethanol extracts produced a significant reduction of the edema of the rat's paw induced by carrageen. As regards cachaza, only the ethanol extract and the oil assayed at doses of 500 mg/kg and 2.5 mL/kg of body weight, respectively, did not show any marked reduction of edema. It was concluded that the antiinflamatory susbstances are mostly found in wax and that the ratio wax:ethanol 1:5 may be used to obtain them.
Aplicaciones de la inteligencia artificial en la Medicina: perspectivas y problemas
Expósito Gallardo,María del Carmen; ávila ávila,Rafael;
ACIMED , 2008,
Abstract: the advances attained in medical informatics in cuba include research, teaching, primary and secondary health care, as well as the management of health institutions. in this field, the applications in the area called artificial intelligence arouse great interest because of their possibilities to be involved in situations where it is required a wealth of medical knowledge, the rapid data processing and the effective decision making. the prospects for using systems with intelligent behaviour in the cuban medical area, a basic objective in the health sector due to the priority given to the fundamental and applied research in the medical sciences in function of the programs aimed at improving the health of our people, are assessed. the implementation of devices simulating the intellect of the doctor in all its dimension will depend on the solution of some significant problems that are exposed. the application of artificial intelligence in medicine, in addition to require an adequate delimitation of tasks and goals, poses serious difficulties at the scientific, technological, philosophical and ethic spheres. despite the efforts, its concept is yet used in many cases to refer to certain computer simulations of operations that before were considered inherent to man while the computers with attributes of artificial intelligence are still very limited, do not perceive the semantics of the information and show very modest logical possibilities in comparison with those of the physicians.
Aplicaciones de la inteligencia artificial en la Medicina: perspectivas y problemas Artificial intelligence applied to medicine: prospects and problems
María del Carmen Expósito Gallardo,Rafael ávila ávila
ACIMED , 2008,
Abstract: Los avances experimentados en el campo de la informática médica en Cuba comprenden la investigación, la docencia, la asistencia secundaria y primaria; así como la gerencia de las instituciones de salud. En este campo, las aplicaciones pertenecientes a la denominada área de la inteligencia artificial despiertan un gran interés, debido a sus posibilidades para involucrarse en situaciones donde se requiere un gran acervo de conocimientos médicos, el veloz procesamiento de los datos y la toma efectiva de decisiones. Se valoran las perspectivas de uso de sistemas con comportamiento inteligente en el ámbito médico cubano, un objetivo básico en el sector de la salud, debido a la prioridad concedida a las investigaciones fundamentales y aplicadas en ciencias médicas en función de los programas dirigidos al mejoramiento de la salud de nuestro pueblo. Se plantean algunos problemas relevantes de cuya solución dependerá la implementación de ingenios que simulen el intelecto del médico en toda su dimensión. La aplicación de la inteligencia artificial en la Medicina, además de requerir de una adecuada delimitación de sus metas y tareas, plantea serias dificultades en los planos científicos, tecnológicos, filosóficos y éticos. A pesar de los esfuerzos, su concepto se utiliza todavía en no pocos casos para referirse a ciertas simulaciones por computadoras de operaciones consideradas antes inherentes al hombre mientras que las computadoras con atributos de inteligencia artificial son aún muy limitados, no perciben la semántica de la información y exhiben posibilidades lógicas muy modestas comparadas con las mostradas por los médicos. The advances attained in Medical Informatics in Cuba include research, teaching, primary and secondary health care, as well as the management of health institutions. In this field, the applications in the area called Artificial Intelligence arouse great interest because of their possibilities to be involved in situations where it is required a wealth of medical knowledge, the rapid data processing and the effective decision making. The prospects for using systems with intelligent behaviour in the Cuban medical area, a basic objective in the health sector due to the priority given to the fundamental and applied research in the medical sciences in function of the programs aimed at improving the health of our people, are assessed. The implementation of devices simulating the intellect of the doctor in all its dimension will depend on the solution of some significant problems that are exposed. The application of Artificial Intelligence in medic
Clonazepan: Estudio preclínico de una formulación nacional
Alfonso Valdés,Yalile; Ribas Avila,María del Carmen; Ballenilla Rodríguez,Thais; Guerra Sardi?as,Isabel María;
Revista Cubana de Farmacia , 1996,
Abstract: a comparative study of 2 clonazepam formulations, the national formulation in tablets 1 mg, batch 2 003, and the rivotrilr 0.5 mg imported from la roche, batch 818 997, spain, was carried out. their anticonvulsant activity was evaluated by inducing convulsions with pentylenetetrazole; whereas the motor coordination and the myorelaxing effect were evaluated by using the rotatory rod method in swiss albinic mice from the biological control lab colony, in both cases. the two products were active to convulsions, but the national one was stronger than the imported one. no significant difference was observed in the other two parameters. of the formulations studied a higher therapeutic margin was obtained with the national product.
Clonazepan: Estudio preclínico de una formulación nacional
Yalile Alfonso Valdés,María del Carmen Ribas Avila,Thais Ballenilla Rodríguez,Isabel María Guerra Sardi?as
Revista Cubana de Farmacia , 1996,
Abstract: Se estudió comparativamente 2 formulaciones de clonazepán, la formulación nacional tabletas 1 mg lote 2003, en relación con el producto importado RivotrilR 0,5 mg de La Roche lote 818997, Espa a. Para ello se evaluó la actividad anticonvulsivante al inducir convulsiones por pentilentetrazol; y la coordinación motora y el efecto miorrelajante, mediante el método de varilla rotatoria en ratones albinos suizos en ambos casos, procedentes de la colonia del laboratorio Control Biológico. Los 2 productos resultaron activos frente a las convulsiones, siendo el nacional más potente que el importado; para los otros 2 parámetros no aparece diferencia significativa. De las formulaciones estudiadas, con el producto nacional se alcanzó un margen terapéutico superior. A comparative study of 2 clonazepam formulations, the national formulation in tablets 1 mg, batch 2 003, and the RivotrilR 0.5 mg imported from La Roche, batch 818 997, Spain, was carried out. Their anticonvulsant activity was evaluated by inducing convulsions with pentylenetetrazole; whereas the motor coordination and the myorelaxing effect were evaluated by using the rotatory rod method in Swiss albinic mice from the Biological Control Lab colony, in both cases. The two products were active to convulsions, but the national one was stronger than the imported one. No significant difference was observed in the other two parameters. Of the formulations studied a higher therapeutic margin was obtained with the national product.
El impacto del compromiso organizacional en la orientación al mercado
Adriana Eugenia Ramos ávila,María del Carmen Martínez Serna,Gonzalo Maldonado Guzmán
Investigación y Ciencia de la Universidad Autónoma de Aguascalientes , 2009,
Abstract: Tener un conocimiento claro sobre el compromiso organizacional y la orientación al mercado, proporciona a las organizaciones un buen entendimiento de las necesidades de los trabajadores, clientes, competencia y ambiente del mercado, lo que conlleva como consecuencia un mejor desempe o de la organización. En este sentido, este estudio investiga la influencia potencial del compromiso organizacional en la orientación al mercado en el sistema público de educación superior. Los datos requeridos para este estudio fueron recolectados a través de entrevistas personales utilizando una muestra de 300 profesores de una universidad pública del centro de México. Los resultados obtenidos muestran que el compromiso organizacional tiene un impacto positivo en la orientación al mercado cultural, y ésta a su vez tiene un impacto positivo en la orientación al mercado conductual.
Detection of IS6110 and HupB gene sequences of Mycobacterium tuberculosis and bovis in the aortic tissue of patients with Takayasu’s arteritis
Soto María,Del Carmen ávila-Casado Ma,Huesca-Gómez Claudia,Alarcon Gilberto
BMC Infectious Diseases , 2012, DOI: 10.1186/1471-2334-12-194
Abstract: Background Takayasu’s arteritis (TA) is a chronic inflammatory disease affecting the large arteries and their branches; its etiology is still unknown. In individuals suffering from TA, arterial inflammation progresses to stenosis and/or occlusion, leading to organ damage and affecting survival. Relation of TA with Mycobacterium tuberculosis has been known, but there have been only a few systematic studies focusing on this association. The IS6110 sequence identifies the Mycobacterium tuberculosis complex and the HupB establishes the differences between M. tuberculosis and M. bovis. Our objective was to search the presence of IS6110 and HupB genes in aorta of patients with TA. Methods We analyzed aorta tissues embedded in paraffin from 5760 autopsies obtained from our institution, we divided the selected samples as cases and controls; Cases: aortic tissues of individuals with Takayasu’s arteritis. Control positive: aortic tissues (with tuberculosis disease confirmed) and control negative with other disease aortic (atherosclerosis). Results Of 181 selected aorta tissues, 119 fulfilled the corresponding criteria for TA, TB or atherosclerosis. Thus 33 corresponded to TA, 33 to tuberculosis (TB) and 53 to atherosclerosis. The mean age was 22 ± 13, 41 ± 19, and 57 ± 10, respectively. IS6110 and HupB sequences were detected in 70% of TA tissues, 82% in tuberculosis, and in 32% with atherosclerosis. Important statistical differences between groups with TA, tuberculosis versus atherosclerosis (p = 0.004 and 0.0001, respectively) were found. Conclusion We identified a higher frequency of IS6110 and HupB genes in aortic tissues of TA patients. This data suggests that arterial damage could occur due to previous infection with M. tuberculosis.
Growth dynamics and yield of melon as influenced by nitrogen fertilizer
Castellanos, María Teresa;Cabello, María Jesús;Cartagena, María del Carmen;Tarquis, Ana María;Arce, Augusto;Ribas, Francisco;
Scientia Agricola , 2011, DOI: 10.1590/S0103-90162011000200009
Abstract: nitrogen (n) is an important nutrient for melon (cucumis melo l.) production. however there is scanty information about the amount necessary to maintain an appropriate balance between growth and yield. melon vegetative organs must develop sufficiently to intercept light and accumulate water and nutrients but it is also important to obtain a large reproductive-vegetative dry weight ratio to maximize the fruit yield. we evaluated the influence of different n amounts on the growth, production of dry matter and fruit yield of a melon 'piel de sapo' type. a three-year field experiment was carried out from may to september. melons were subjected to an irrigation depth of 100% crop evapotranspiration and to 11 n fertilization rates, ranging 11 to 393 kg ha-1 in the three years. the dry matter production of leaves and stems increased as the n amount increased. the dry matter of the whole plant was affected similarly, while the fruit dry matter decreased as the n amount was increased above 112, 93 and 95 kg ha-1, in 2005, 2006 and 2007, respectively. the maximum leaf area index (lai), 3.1, was obtained at 393 kg ha-1 of n. the lowest n supply reduced the fruit yield by 21%, while the highest increased the vegetative growth, lai and leaf area duration (lad), but reduced yield by 24% relative to the n93 treatment. excessive applications of n increase vegetative growth at the expense of reproductive growth. for this melon type, rates about 90-100 kg ha-1 of n are sufficient for adequate plant growth, development and maximum production. to obtain fruit yield close to the maximum, the leaf n concentration at the end of the crop cycle should be higher than 19.5 g kg-1.
Qué hace el cuidador familiar en el hospital: Cómo se ve a sí mismo y cómo lo ven los profesionales The role of the family caregivers in the hospital: Their self-concept and how they are seen by health professionals
Rafael Villar Dávila,Pedro Luis Pancorbo Hidalgo,María del Carmen Jiménez Díaz,Alfonso Cruz Lendínez
Gerokomos , 2012,
Abstract: Los cuidadores familiares han sido ampliamente estudiados en el ámbito domiciliario y de la atención primaria pero prácticamente no existen estudios que incidan sobre su realidad dentro de los hospitales. Con un enfoque cuantitativo y dise o descriptivo transversal mediante el uso de cuestionarios validados al efecto realizado a familiares que cuidan a ancianos ingresados en los hospitales se conoce el perfil de los mismos, qué actividades realizan y qué valoración hacen de ellos los profesionales de enfermería. Como conclusiones principales destacar: a) Las principales actividades del cuidador familiar en el hospital son de acompa amiento, entretenimiento, soporte emocional e intermediación. b) El desconocimiento de la actividad inhiben al cuidador familiar a realizar más actividades. c) Si se educa y entrena al cuidador familiar en las actividades de cuidado, se harán más. d) Los profesionales desconocen lo que los familiares dicen que hacen. No consideran que muchas de las acciones del cuidador sean realmente cuidados. Creen que los cuidadores familiares no ayudan tanto como ellos esperan al cuidado básico de los ancianos ingresados. Family caregivers have been widely studied in the home and primary care but virtually do no exits studies which influence the reality in hospitals. With a quantitative approach and cross-sectional design using questionnaires validated for that purpose made to relatives who care for elderly people in hospitals is called the profile them, what activities do and what makes them value the nurses. As main findings include: a) The main activities of family caregivers in the hospital are accompanying, entertainment, emotional support and brokerage. b) Lack of activity inhibit the family caregiver to be more active. c) If you educate and train the family caregiver in activities of care, will be more. d) Professionals know what family members say they do. Do not think that many of the actions of the caregiver are really cares. They believe that family caregivers do not help as much as they expect the basic care of hospitalized elders.
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