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Search Results: 1 - 10 of 796377 matches for " María de Jesús;Galicia-Galicia "
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Cierre transcatéter del conducto arterioso permeable con coils de liberación controlada: Resultados inmediatos y seguimiento a mediano plazo
Parra-Bravo, José Rafael;Acosta-Valdez, José Luis;Girón-Vargas, Ana Luisa;Beirana-Palencia, Luisa Gracia;Rodríguez-Hernández, Lydia;Estrada-Loza, María de Jesús;Galicia-Galicia, José Alfredo;Lazo-Cárdenas, César;Santillán-Pérez, Leticia;
Archivos de cardiología de México , 2005,
Abstract: objective: to determine the success rate and safety of percutaneous closure of patent ductus arteriosus (pda) with a detachable coil. methods: forty-one children with small-to moderate-size pda (maximum diameter < 4 mm) underwent percutaneous coil occlusion. the results were assessed by angiography and echocardiography the mean age was 2.0 ± 1.3 years (range 0.6 to 5.6 years); mean weight was 10.0 ± 3.4 kg (range 4.5 to 18.0 kg). the mean minimum diameter of the pda was 1.7 ± 0.6 mm (range, 0.5 to 4.0 mm). results: the occlusion device was inserted in 39 of 41 patients (95%). the mean coil/pda ratio was 3.41 ±1.1. we observed angiographic cessation of blood flow through the pda after coil insertion in 18 patients; 18 patients had residual shunt, 3 mild shunt and 2 moderate shunt. no complications were observed during the procedure. thirty-five patients showed absence of blood flow through pda 24 hours after coil occlusion by echocar-diography the other four patients with residual shunt showed flow cessation after 2 months in two patients and after 6 months in the other two. failure of coil insertion in two patients was due to detachment of the pulmonary edge of the coil, which was subsequently removed in one, and due to coil migration in the other, both patients underwent surgical pda closure. mean follow-up at 29.5 ± 16.5 months showed no residual blood flow through the occluded pda, except for one patient. conclusion: our results, as many others, suggest that pda coil occlusion is a safe, effective, and cheap procedure. pda coil occlusion should be the elective method for pda closure in patients older than 6 months of age with small-to moderate size pda(< 4 mm). the procedure in newborn infants and patients with larger pda must be made with a different type of occlusive device.
The IL1B-511 Polymorphism (rs16944 AA Genotype) Is Increased in Aspirin-Exacerbated Respiratory Disease in Mexican Population
Ramcés Falfán-Valencia,Gandhi F. Pavón-Romero,Angel Camarena,María de la Luz García,Gustavo Galicia-Negrete,María Cristina Negrete-García,Luis Manuel Teran
Journal of Allergy , 2012, DOI: 10.1155/2012/741313
Abstract: Aspirin exacerbated respiratory disease (AERD) is characterized by chronic hyperplastic rhinosinusitis, nasal polyposis, asthma, and aspirin sensitivity. The mechanisms which produce these manifestations of intolerance are not fully defined, current research focuses on cyclooxygenase 1 (COX-1) inhibition, metabolism of arachidonic acid, and the COX pathway to the lipoxygenase (LO) route, inducing increased synthesis of leukotrienes (LT). The biological plausibility of this model has led to the search for polymorphisms in genes responsible for proinflammatory cytokines synthesis, such as IL1B and IL8. We performed a genetic association study between IL8-251 (rs4073) and IL1B-511 (rs16944) polymorphisms in AERD, aspirin-tolerant asthma (ATA), and healthy control subjects. Using allelic discrimination by real-time PCR, we found statistically nonsignificant associations between AERD, ATA, and healthy control subjects for the GG and GA genotypes of IL1B (rs16944). Interestingly, the AA genotype showed an increased frequency in the AERD patients versus the ATA group (GF = 0.19 versus 0.07, , OR?2.98, and 95% CI?1.17–7.82). This is the first observation that IL1B polymorphisms are involved in AERD. Thus, future studies must investigate whether interleukin-1 is released in the airways of AERD patients and whether it relates to genetic polymorphisms in the IL1B gene. 1. Introduction Aspirin-exacerbated respiratory disease (AERD) is a syndrome characterized by chronic hyperplastic rhinosinusitis, nasal polyposis, asthma, and aspirin sensitivity, as described in 1922 by SzcZeklik et al. [1, 2]. The prevalence of AERD is variable; Stevenson and Szczeklik reported in 2006 that AERD occurs in 3% of adult patients with asthma in the United States, with the onset of symptoms during the third decade of life, and that it is more common in women than in men, with approximately 70% versus 30% in Europe [2] and 57% versus 43% in the USA [3]. The mechanisms underlying aspirin intolerance are not fully defined, with current research focusing on cyclooxygenase 1 (COX-1) inhibition by aspirin and other NSAIDs diverting arachidonic acid metabolism from COX pathways to the lipoxygenase (LO) pathway. This leads to increased synthesis of the cysteinyl-leukotrienes (LT), LTC4, LTD4, and LTE4, resulting in bronchoconstriction, mucus hypersecretion, and possibly the development of polyps and urticaria [1]. The biological plausibility of this hypothesis fact has led to the search for polymorphisms in genes responsible for LT synthesis, to explore associations between these
Topological Molino's theory
Jesús A. álvarez López,Manuel F. Moreira Galicia
Mathematics , 2013,
Abstract: Molino's description of Riemannian foliations on compact manifolds is generalized to the setting of compact equicontinuous foliated spaces, in the case where the leaves are dense. In particular, a structural local group is associated to such a foliated space. As an application, we obtain a partial generalization of results by Carri\`ere and Breuillard-Gelander, relating the structural local group to the growth of the leaves.
An Assessment of Rare Earth Aluminates as Possible Radiation Shields for Artificial Satellites in Low Earth Orbit  [PDF]
Ernesto Ortiz, José Francisco Valdés-Galicia, Rocío García, Lorenzo M. Martínez de la Escalera, Marcos Anzorena, Lorenzo Martínez-Gómez
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.94029
Abstract: Charged particles injected into dielectric material of artificial satellites may cause data flipping, command errors and charges in dielectric material properties. In this work we report the results of an evaluation of rare earth aluminates as possible radiation shields for its application in Low Earth Orbit (LEO) satellite construction. With help of Geant4 software, we calculated the radiation dose that a target receives at a typical LEO (685 km) as a function of the shield thickness. The target used was a silicon plate, the shields used were hollow cubes of rare earth aluminate walls (YAlO3, LaAlO3, NdAlO3 and GdAlO3), and we also used aluminium oxide (Al2O3). The radiation source was the measured fluxes of electron and proton with a spectrum corresponding to a LEO. We found that of the total radiation dose received by the target without shield is 5847 microGy/hour, of which, the electrons contribute with 94.9% and the protons with 5.1%. The rare earth aluminates are a better shield than the Al2O3 to protect a target against the radiation that permeates a LEO near to equator.
Industria petroquímica y cambios socioeconómicos regionales en la costa del Golfo de México. El caso del sureste de Veracruz
María Teresa Sánchez Salazar,Norma Martínez Laguna,Maribel Martínez Galicia
Investigaciones geográficas , 1999,
Abstract: La industria petroquímica ha desempe ado un papel fundamental en la estructuración y organización de algunos espacios costeros del país, entre ellos el de la región sureste de Veracruz. El impulso que recibió esta región en el contexto del auge petrolero desencadeno una serie de procesos de cambio sociodemográficos, económicos y urbano-regionales que, por su dinámica acelerada, rebasaron la capacidad de los gobiernos locales, estatal y federal para dirigirlos en el marco de una política de ordenamiento territorial, lo que trajo como resultado profundos desequilibrios socioeconómicos en el interior de la región.
Bacteriemia por Leuconostoc spp. en paciente sin factores de riesgo
Cinza Sanjurjo,S.; Cabarcos Ortiz de Barrón,A.; Castilla Galicia,G.; Lorenzo Zú?iga,V.;
Anales de Medicina Interna , 2006, DOI: 10.4321/S0212-71992006000200006
Abstract: leuconostoc spp are gram-positive coccobacilli, catalasa and oxidase negative, vancomycin resistant. causes of infection have been reported previously but it has not been described confirmed bacteremia due to leuconostoc spp in patient without other immunological disorders. we describe a case of bacteremia in a 64-years-old man with a prosthetic valve 7 months before to begin fever of unknown origin. we confirmed bacteremia due leuconostoc spp and the treatment with respectives antibiotics permits the cure. leuconostoc spp should be considered as a potencial cause of bacteriemia, but we would be observant to the bacteremias due vancomicin resitant germs, because in most cases the laboratory do not find the sensitivity to this antibiotic.
Effect of Cholesterol Enriched or Fatty-Acid Diets on Cholesterol and Lipid Levels in Young Wistar Rats  [PDF]
Maribel Cortés-Ortiz, Perla Leal-Galicia, Benjamín E. Chávez-álvarez, María del Carmen Cárdenas-Aguayo, Marco Antonio Meraz-Ríos
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.510099
Abstract: Nutritional intake is a fundamental determinant of health. It is well known that cholesterol rich diets can induce several pathological conditions but detailed mechanism underlying these remains unknown. Wistar rats, an animal strain widely used in the research have been employed to study the effects of dietary interventions due to their metabolic characteristics, which are closer to the human compared to mice. The effect of some components of the western diet, combined with cholesterol in the lipid profile have been studied, but the impact of only cholesterol or fatty-acid diets in such a profile has not been yet characterized. Here we measured the effect of 6 or 16 weeks of dietary intervention with cholesterol enriched diet (CED) or fatty-acid diet (FAD) on cholesterol, triglyceride levels, high density lipoproteins (HDL) and low density lipoproteins (LDL). We observed significant differences in body weight only in animals treated with CED or FAD from Week 9 onwards as compared to animals fed the control diet. There were no differences between animals fed with CED or FAD in cholesterol levels at any time point nevertheless, triglyceride levels were significantly increased as compared to control diet in animals under both diets at early time points. Finally, both CED and FAD induced a decrease in HDL as compared to control levels in treatments of more than 6 weeks, whereas LDL transiently increased in animals treated with FAD from 10 to 12 weeks, but after this period LDL levels returned to baseline, suggesting that young rats have a compensatory effect at least for the period of time analyzed here. Here we provide a temporal course on lipid profile of cholesterol, triglycerides, HDL and LDH in Wistar rats treated with CED and FAD diet that can be useful as reference for future studies.
Convivencia y cultura ciudadana: Dos pilares fundamentales del derecho policivo
María de Jesús Illera
Revista de Derecho , 2005,
Abstract:
El comportamiento contravencional del barranquillero y su actitud frente a las normas policivas
María de Jesús Illera Santos
Revista de Derecho , 2005,
Abstract: Este artículo presenta parte de los resultados de una investigación realizada en la ciudad de Barranquilla (Colombia), con el objetivo de interpretar sociológicamente el comportamiento contravencional de los barranquilleros a partir de la actitud ciudadana frente al ordenamiento mismo, y de esta forma establecer la eficacia jurídica de las normas policivas como estatuto de convivencia ciudadana. Se analiza el Derecho de Policía desde la perspectiva social pero teniendo en cuenta que como conjunto de normas que es, tanto nacionales como departamentales y distritales, se encarga de regular, por un lado, la función del Estado orientada a asegurar su existencia en el orden interno y a proteger la integridad de las personas en su vida, honra y bienes y, por otra parte, la conducta humana con el fin de evitar el abuso de la libertad en perjuicio de la colectividad y del ejercicio de los derechos de todos.
Rese a de "Nuevas pautas para México: observaciones sobre remesas, donaciones filantrópicas y desarrollo equitativo" de Barbara J. Merz (coord.)
María de Jesús ávila
Migraciones internacionales , 2006,
Abstract:
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