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Search Results: 1 - 10 of 463624 matches for " A. Espinosa-Aguilera "
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Breastfeeding Recommendations. Pediatricians Mexicans Survey  [PDF]
H. Reyes-Vázquez, C. Lopez-Enriquez, F. Bribiesca-Godoy, A. Espinosa-Aguilera, B. M. Morfin-Maciel, N. E. Martínez-Aguilar
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1102816
Objective: To know recommendations on breastfeeding by Mexican pedia-tricians. Methods: Cross-sectional, descriptive study conducted through a survey of Mexican pediatricians. Results: Two hundred and fifty-four pedi-atricians (range 27 to 72 years) were surveyed. Most of them worked in public hospital or private practice or both. Among them 94.5% recom-mended newborn early contact with mother and 54.3% rooming. Exclusive breastfeeding was suggested by 89.8%, out of them 51.9% for 6 months. Breastfeeding on demand was counseled by 88.2% and 84.6% without fixed schedules. Pacifier use was rejected by 86.6%. 51.2% used iron supplements and 59.5% used other vitamins. Stopping breastfeeding in special situations was suggested by 87.4%; of them, 86.6% in case of infection with AIDS; 74.4% if the mother used drugs; 74.4% by infection with hepatitis B virus; 49.6% in case of mastitis; 17.3% in newborns with jaundice; and 18.5% in other situations. Finally, 93.3% of pediatricians surveyed reported interest in breastfeeding; 54.7% obtained information in medical journals; 54.7% through medical courses, and 31.9% in books. 58.3% of respondents oriented on breastfeeding according to WHO recommendations; 31.5% did so regularly and 10.2% did not. Conclusions: Pediatricians play a major role in breastfeeding promotion, but their formation is scarce and they are not prepared to counsel patients. Governments of developing countries should promote breastfeeding to ensure the health and proper development of infants.
Síndrome de Usher de tipo II: caracterización oftalmológica, auditiva y genética de una familia consanguínea Type II Usher syndrome: ophthalmological, auditory, and genetic characterization of a consanguineous family
Rásife Freyre Luque,Sarah María García Espinosa,Idalmis García Mayet,Francisca Santisteban Aguilera
MEDISAN , 2011,
Abstract: Se caracterizó a una familia consanguínea de 25 miembros, 3 de los cuales padecían el síndrome de Usher de tipo II, a través del estudio auditivo, oftalmológico y genético en el Centro de Retinosis Pigmentaria de Santiago de Cuba. Los pacientes (2 varones y 1 fémina) tenían en común: aparición de la enfermedad en la etapa juvenil, mala visión nocturna, campos visuales reducidos, hipoacusia neurosensorial y resultados normales en las pruebas vestibulares; asimismo, en genética molecular, la electroforesis en gel de poliacrilamida reveló la presencia del marcador D1S237, estrechamente ligado al gen USH2 en el cromosoma 1. Esa caracterización permitirá aplicar la terapia génica y los implantes, tanto de células madre como cocleares, según corresponda. A consanguineous family of 25 members, 3 of whom suffered from type II Usher syndrome was characterized through the auditory, ophthalmologic, and genetic study in the Retinitis Pigmentosa Center from Santiago de Cuba. The patients (2 males and a female) had in common: occurrence of the illness during youth, bad night vision, reduced visual fields, neurosensorial hypoakusia, and normal results in the vestibular tests; also, in molecular genetics, electrophoresis in polyacrilamide gel revealed the presence of the D1S237 marker, closely linked to the gene USH2 in chromosome 1. That characterization will allow to apply the genic therapy and both implants, mother cells and cochlear, as it corresponds.
Síndrome de Usher de tipo II: caracterización oftalmológica, auditiva y genética de una familia consanguínea
Freyre Luque,Rásife; García Espinosa,Sarah María; García Mayet,Idalmis; Santisteban Aguilera,Francisca; Dager Salomón,Melek;
MEDISAN , 2011,
Abstract: a consanguineous family of 25 members, 3 of whom suffered from type ii usher syndrome was characterized through the auditory, ophthalmologic, and genetic study in the retinitis pigmentosa center from santiago de cuba. the patients (2 males and a female) had in common: occurrence of the illness during youth, bad night vision, reduced visual fields, neurosensorial hypoakusia, and normal results in the vestibular tests; also, in molecular genetics, electrophoresis in polyacrilamide gel revealed the presence of the d1s237 marker, closely linked to the gene ush2 in chromosome 1. that characterization will allow to apply the genic therapy and both implants, mother cells and cochlear, as it corresponds.
Análisis de la resistencia en pomelo y limón mexicano transformados con el gen p25 del Citrus tristeza virus
Loeza-Kuk, Emiliano;Gutiérrez-Espinosa, María A.;Ochoa-Martínez, Daniel L.;Villegas-Monter, ángel;Mora-Aguilera, Gustavo;Palacios-Torres, Elvia C.;Pérez-Molphe-Balch, Eugenio;
Agrociencia , 2011,
Abstract: in citrus tristeza management tolerant rootstocks have been used, but have less plasticity than c. aurantium, and cross-protection sometimes is overcome by more severe variants. an alternative may be transgenic plants with pathogen-derived resistance pdr. to evaluate the conferred pdr with transgenesis plants of citrus paradisi and c. aurantifolia, transformed via agrobacterium tumefaciens and a.rhizogenes with the p25 gene of the citrus tristeza virus (ctv), were multiplied in c. aurantium and c. volkameriana and inoculated by grafting and with aphis gossypii using mexican isolates of ctv to determine their resistance. the experimental design was completely randomized in a factorial arrangement with three replicates by treatment. the plant behavior, evaluated by real-time pcr with sybr ? green for the p18 gene, indicated that 90 d after inoculation, the c. paradisi transgenics had lower virus concentration than those non-transformed, while c. aurantifolia allowed replication similar to non-transformed plants. similar behavior was observed in vitro with the same materials. the analysis of results suggest a possible pathogen-derived resistance in the transgenic grapefruit lines evaluated.
Análisis espacio-temporal de aislamientos del Citrus tristeza virus de Yucatán y Tamaulipas
Rivas-Valencia, Patricia;Loeza-Kuk, Emiliano;Mora-Aguilera, Gustavo;Ruiz-García, Noé;Ochoa-Martínez, Daniel Leobardo;Gutiérrez-Espinosa, Alejandra;Febres, Vicente;
Revista mexicana de ciencias agrícolas , 2010,
Abstract: citric (citrus sinensis l.) commercial vegetable gardens were studied, located in the main producing regions of yucatán from 2003 to 2006 and in tamaulipas in 2004. in yucatán it was carried out a space-time study of dispersion of citric tristeza, caused by citrus tristeza virus, in presence of toxoptera citricida kirkaldy. the initial incidence (x0) was of 4.41% and the final (xf) was of 39.33%. the aggregation indexes of morisita and lloyd dependent of the optimum size of quadrant showed an added pattern with values between 1.41 and 2.39. also, isolations of citrus tristeza virus were molecularly characterized to examine the diversity of current virus. virus isolations were analyzed with single-strand conformation polymorphism, being observed up to two haplotypes by isolation and three types of patterns in yucatán. in tamaulipas, with the molecular characterization, three haplotypes were identified by isolation and seven patterns. the similarity coefficient calculated for these two populations of isolations was of 0.7, being assumed a common origin for both populations. the analysis of molecular variance indicated bigger variability inside the populations (69%) and between them (31%), proving that both citric regions share variants characterized as of moderate type, which can justify the absence of symptoms attributable to tristeza. the analyses carried out to identify dispersion pattern of the isolations in field didn't evidence the dispersion between trees and rows.
Consideraciones taxonómicas de Callistochiton pulchellus (Gray, 1828) (Mollusca, Placophora) en Iquique, norte de Chile
Aguilera,Moisés A.;
Investigaciones marinas , 2005, DOI: 10.4067/S0717-71782005000200008
Abstract: information is presented on taxonomic traits of callistochiton pulchellus (gray, 1828) collected at thirteen sites between iquique (20°12's-70°09'w) and pabellón de pica (20°54's-70°08'w) in the north of chile. sampling sites were at least one km apart. the species was found at only three of the thirteen sampling sites (23%), and only underneath boulders sunken in sand. a new southern limit for this species was recorded in chanavayita, 54 km south of iquique. the most important characteristics of its habitat are presently discussed, as well as the the most relevant morphological differences of this species in comparison with calloplax vivipara (plate, 1902) which it closely resembles in form and tegmental ornamentation. c. pulchellus had a greater number of radial lines on the cephalic plate (? 12) than c. vivipara (? 9). it was also noted that the central plates in the former species were more rectangular than those of the latter species
Cirripedios en la dieta del molusco herbívoro Chiton granosus Frembly, 1827 (Mollusca, Placophora) presente en el intermareal rocoso de Iquique, norte de Chile
Aguilera,Moisés A;
Investigaciones marinas , 2005, DOI: 10.4067/S0717-71782005000100008
Abstract: preliminary quantitative information is given on the presence of barnacle cyprids and post-metamorphic stages in the diet of the molluscan grazer chiton granosus frembly 1827 (mollusca: placophora) sampled at iquique, chile. in december 2000, we observed the presence of barnacle cyprids and post-metamorphic stages at a high relative percentage of abundance (n = 30, 54,1% and 39,9%, respectively) and they were frequent in all of the individuals analyzed. moreover, a high frequency of ocurrence of cyprid larvae (f% = 67) was recorded in the distal portion of the intestine; of these larvae, 15 were observed with signs of vital activity (appendage movement) in 45% of all the stomachs analyzed. ingestion of barnacle cyprids and post-metamorphic stages was observed at a high frequency throughout the five months of the study (n = 10, 96% ± 6,5 and 78% ± 23,6)
Distribution of Within-Ring Internal Checking in Pinus radiata Grown in Southern Chile
Aguilera,A; Inzunza,L;
Maderas. Ciencia y tecnología , 2009, DOI: 10.4067/S0718-221X2009000200001
Abstract: the increase of pinus radiata plantations in chile has brought larger annual volumes to the industry and the opportunity to process them into value-added products. within-ring checks constitute an important problem that may affect the appearance quality of lumber. this problem occurs in the early wood portion of sapwood growth rings in dry lumber and can only be seen when the board is cross cut. the purpose of this study was to analyze the frequency of within-ring internal checking in kiln-dried pinus radiata lumber from different logs grown in southern chile. centre boards were more affected by the internal checking. checks were located more frequently between rings 4 to 6.
Canje o Fusilamiento: Los presos políticos en las guerras del siglo XIX: Exchange or shooting: Political prisoners in XIX century wars in Colombia
Aguilera Pe?a,Mario;
Análisis Político , 2006,
Abstract: in this article you discusses the problem of the political crime in the first place in xix century, sustaining a novel position: the political crime had bigger width that the one that is attributed usually, because in crisis moments and confrontation the state enlarged the behaviors reprimibles against its security and existence (rebellion, asonada, etc.) punishing to the simple ones differing unarmed, to the neutrals and the indifferent ones; the repression was reflected concretely in arbitrary detentions, expropriations and discriminations. then the treatment is examined that was given to the prisoners taken in combat, showing diverse modalities of application of the death penalty and of terrible acts made against alive and dead prisoners. also, two modalities of the right of man are stood out that affected the prisoners, one in positive form as it was the exchange and another negative as the right he/she went to the reprisal. lastly, some aspects of the day-to-dayness of the political prisoners are shown in the colombian jails.
The functional roles of herbivores in the rocky intertidal systems in Chile: A review of food preferences and consumptive effects
Revista chilena de historia natural , 2011, DOI: 10.4067/S0716-078X2011000200009
Abstract: this paper reviews recent knowledge about the functional roles that herbivores have in intertidal communities in chile. specifically, i review field and laboratory studies dealing with the food preferences of herbivores, the responses of algae to herbivore attacks and reports of negative and positive functional effects of herbivores on algal populations and communities. most herbivores studied are characterized as generalist species. green ephemeral and a few corticated algae dominate diets, while all species considered ingest larvae and post-metamorphic stages of invertebrates challenging classical characterizations of the herbivore guild. functional redundancy and complementarity within the herbivore guild is discussed in relation to both quantitative and qualitative evidence. the magnitude of consumptive per capita effects of herbivores on algae can be related, although not entirely, to body size. feeding mode can determine differential species participation in different phases and stages of community succession. positive effects of herbivores on algae via spore dispersion, and also compensatory potential after consumption, appear to match the classical model of the "grazing optimization hypothesis". only one species that form "gardens" is reported, suggesting a lack of information regarding behavioural aspects of abundant taxa from intertidal habitats in chile. according to variation in oceanographic conditions and thermal regimes along the coast of chile, geographical variation in functional effects of herbivores and thereby shifts in the herbivore-algae balance is expected. future studies should consider the functional relationship within the herbivore guild at different temporal and spatial scales, and compensatory potential after species loss. whether herbivore species have either redundant or complementary roles in intertidal communities can help us to understand the intensity and direction of human impacts in both community structure and ecosystem function
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