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Search Results: 1 - 10 of 147328 matches for " Rosa O. González-Robles "
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Sleep Deprivation Affects Working Memory in Low but Not in High Complexity for the N-Back Test  [PDF]
Guadalupe J. Terán-Pérez, Alejandra E. Ruiz-Contreras, Rosa O. González-Robles, Rosario Tarrago-Castellanos, Roberto E. Mercadillo, Anabel Jiménez-Anguiano, Javier Velázquez-Moctezuma
Neuroscience & Medicine (NM) , 2012, DOI: 10.4236/nm.2012.34047
Abstract: Sleep clearly influences learning and memory since sleep deprivation and stress impairs both cognitive processes. Working memory is an essential cognitive process and refers to a short-term holding of incoming information required to update the long-term mnemonic storage and to manipulate new elements in order to solve problems and make decisions. Nevertheless, the influence of sleep deprivation on working memory has scarcely been studied. In this study we evaluated working memory using the N-back test after increasing periods of wakefulness. Healthy young males were kept awake for 36 hours and the two N-back tasks with low (1-Back) and high (3-Back) levels of complexity were applied every 6 hours. Additionally, salivary cortisol was determined along the study. Unlike the control non-deprived participants, the sleep deprived volunteers showed a significant decrease in their efficiency to solve the 1-Back task after 24 hours of sleep deprivation. However, no differences were observed after 30 and 36 hours of sleep deprivation. Concerning the 3-Back task no differences were observed after sleep deprivation. Regarding reaction time, the deprived group manifested slower responses for the 1-Back task and for the 3-Back task after 30 hours and 36 hours of sleep deprivation, respectively. Cortisol levels presented the normal daily oscillation and no differences were observed between groups. This data suggests that sleep deprivation affects basal states of attention instead of working memory while performing simple tasks. The impact of sleep deprivation on the cognitive performance depends on the moment of day when the task is applied and the complexity of the tests used to assess these mnemonic skills.
Determinantes psicolingüísticos da compreens?o de leitura em inglês como língua estrangeira
Vivaldo-Lima, Javier;López-Olivas, Miguel;González-Robles, Rosa Obdulia;
Psicologia Escolar e Educacional , 2003, DOI: 10.1590/S1413-85572003000100003
Abstract: the purpose of this study was to analyze the contribution of linguistic and psychological variables in the explanation of the variance associated with reading comprehension in english (l2). two hundred and eighty mexican university students participated in the study. the variables analyzed within the linguistic dimension were: reading strategies in spanish, linguistic competence in english, and ability to perceive lexical transparency between l1 and l2. the psychological dimension evaluated the influence of the reader’s cognitive style, locus of control, and action control orientation on reading comprehension in l2. subjects were administered a battery of seven evaluation instruments. multiple regression analyses suggested a two-stage explanatory model of reading in l2. firstly, psychological variables accounted for 10.0% of the variance in reading comprehension in the first language. secondly, reading comprehension in spanish, linguistic competence in l2, and perception of lexical transparency, accounted for 35.5% of the variance in reading comprehension in english.
Transcraneal Magnetic Stimulation Improves Sleep Parameters in Patients Affected with Imsomnia Associated to Electroencephalographic Abnormalities  [PDF]
Oscar Sánchez-Escandón, Yoaly Arana-Lechuga, Guadalupe Terán-Pérez, Enrique Esqueda-Leon, Rosa Obdulia González-Robles, ángel Ruiz-Chow, Paul Shkurovich-Bialik, Miguel ángel Collado-Corona, Javier Velázquez-Moctezuma
Neuroscience & Medicine (NM) , 2014, DOI: 10.4236/nm.2014.51010
Abstract:

Insomnia is one of the most frequently observed sleep disorders, affecting nearly 10% of the general population. It has multiple etiological factors. Recently, it has been reported that EEG abnormalities are associated with insomnia in patients previously diagnosed as idiopathic insomniacs. In addition, transcranial magnetic stimulation (TMS) has shown to be effective in the treatment of disorders characterized by neural hyper-excitability. Method: In the present study, patients with insomnia and EEG abnormalities were submitted to slow repetitive trans-cranial magnetic stimulation, for 15 minutes daily during 10 days. Polysomnographic recordings were performed before and after TMS. Results: The results indicate that the presence of EEG abnormalities significantly decreased after TMS. In addition, most of the sleep parameters showed significant improvement. Conclusions: These data support the notion that TMS is a reliable therapeutic tool for patients affected with abnormalities linked to neuronal hyper-excitability.

Frecuencia de infección por VIH/sida en usuarios de preservativo Frequency of infection by HIV/ AIDS preservative users
Bertha Alicia Olmedo-Buenrostro,Hugo Alberto González-Robles,Ivan Delgado-Enciso,Ana Bertha Mora-Brambila
Revista Cubana de Investigaciones Biom??dicas , 2012,
Abstract: El propósito fundamental del presente trabajo fue identificar la frecuencia de pacientes atendidos en el servicio de Medicina Interna del Hospital General de Zona No. 1 IMSS-Colima que habiendo utilizado el preservativo en todas sus coitos estuvieran infectados con VIH/sida descartando otra vía de transmisión; considerando su edad, sexo, estado civil, lugar de residencia, número de parejas sexuales y preferencia sexual. El objetivo de este trabajo fue identificar la frecuencia de pacientes infectados por VIH/sida en usuarios de preservativo. Es un estudio descriptivo transversal. Se estudió una muestra de 61 pacientes VIH/sida, durante los meses agosto-octubre, que acudieron a sus citas de control al servicio de medicina interna del Instituto Mexicano del Seguro Social de la ciudad de Colima a quienes se les invitó a participar garantizándoles el anonimato, se obtuvieron medidas de tendencia central. De los 61 pacientes con VIH/sida descartando otra vía de transmisión, 12 (20 %) refirieron haber utilizado en todas sus coitos el preservativo, de los cuales 3 (25 %) eran mujeres y 9 (75 %) hombres. El rango de 20 a 39 a os de edad y los solteros fueron los más afectados. Número de parejas sexuales: 8 (67 %) varias parejas y 4 (33 %) una pareja. Preferencia sexual: 3 (25 %) heterosexuales, 7 (58 %) homosexuales y 2 (17 %) bisexuales. Se concluye que el preservativo no es del todo efectivo, para la protección de enfermedades de transmisión sexual como el VIH/SIDA. The primary purpose of this study was to identify the frequency of patients treated at the Internal Medicine Service of General Hospital Zone No. 1 IMSS, Colima having used preservative in all sexual intercourse were infected with HIV / AIDS discarding other means of transmission, considering his age, sex, marital status, place of residence, number of sexual partners and sexual preference. The aim of this study was to identify the frequency of patients infected with HIV / AIDS in preservative users. It is a cross-sectional study. The sample consisted of 61 patients with HIV / AIDS during the months from August to October, which came to control appointments to the service of internal medicine of the Instituto Mexicano del Seguro Social in Colima city who were invited to participate by guaranteeing anonymity, we obtained measures of central tendency. Of the 61 patients with HIV / AIDS discarding other means of transmission, 12 (20%) reported having used preservatives all their intercourse, of whom 3 (25%) were female and 9 (75%) men. The range of 20 to 39 years old and single were the most affected.
EhADH112 Is a Bro1 Domain-Containing Protein Involved in the Entamoeba histolytica Multivesicular Bodies Pathway
Cecilia Ba uelos,Guillermina García-Rivera,Israel López-Reyes,Leobardo Mendoza,Arturo González-Robles,Silvia Herranz,Olivier Vincent,Esther Orozco
Journal of Biomedicine and Biotechnology , 2012, DOI: 10.1155/2012/657942
Abstract: EhADH112 is an Entamoeba histolytica Bro1 domain-containing protein, structurally related to mammalian ALIX and yeast BRO1, both involved in the Endosomal Sorting Complexes Required for Transport (ESCRT)-mediated multivesicular bodies (MVB) biogenesis. Here, we investigated an alternative role for EhADH112 in the MVB protein trafficking pathway by overexpressing 166 amino acids of its N-terminal Bro1 domain in trophozoites. Trophozoites displayed diminished phagocytosis rates and accumulated exogenous Bro1 at cytoplasmic vesicles which aggregated into aberrant complexes at late stages of phagocytosis, probably preventing EhADH112 function. Additionally, the existence of a putative E. histolytica ESCRT-III subunit (EhVps32) presumably interacting with EhADH112, led us to perform pull-down experiments with GST-EhVps32 and [35S]-labeled EhADH112 or EhADH112 derivatives, confirming EhVps32 binding to EhADH112 through its Bro1 domain. Our overall results define EhADH112 as a novel member of ESCRT-accessory proteins transiently present at cellular surface and endosomal compartments, probably contributing to MVB formation during phagocytosis.
De qué se mueren los ancianos en Espa a?
Robles González, Elena
Estudios Geográficos , 2009,
Abstract: Following the analyses of the standardized mortality rates, that allows to eliminate the effect of age structure, the impact of mortality is directly appreciated and the evolution of the main causes of death in the 80+ population in Spain between 1975 and 2007, is described. Using the Short-List of Eurostat, causes of death have been divided into 17 broad groups. The article analyzes the decline of mortality caused by the fall of circulatory diseases, mainly the cerebrovascular ones, and to a lesser extent, the respiratory diseases, ill-defined diseases and external causes. Inversely, in the remaining thirteen groups the mortality has increased over such period particularly, the neoplasms, nervous system diseases and mental disorders. Important differences by gender have been found, being neoplasms and respiratory diseases much higher in men, which would explain the greater men oldest-old mortality in Spain. Se analiza la evolución, entre 1975 y 2007, de las principales causas de muerte en la población espa ola de 80+ a os, a partir del análisis de las tasas estandarizadas de mortalidad que, al eliminar el efecto de la estructura por edad, permiten apreciar el impacto de la mortalidad. Las causas de muerte se han agrupado en 17 grandes grupos, siguiendo la Lista Abreviada de Eurostat. Se describe la caída de la mortalidad debida al descenso de las enfermedades circulatorias, (en especial las cerebrovasculares) y, en menor medida, de las respiratorias, las mal definidas y las causas externas. Por el contrario, la mortalidad en los 13 grupos restantes se ha incrementado durante el período, sobre todo la relativa a tumores, enfermedades del sistema nervioso y trastornos mentales. Se constatan importantes diferencias por género, siendo los tumores y las enfermedades respiratorias muy superiores en los hombres. Ello explicaría la mayor mortalidad masculina de la población anciana. [fr] On analise l’évolution des principales causes de mort chez la population espagnole de plus de 80 ans de 1975 à 2007, sur la base de l’analyse des taux standarisés de mortalité qui permettent aprécier l’impact de la mortalité en éliminant l’effet de la structure par age. Les causes de mort ont été groupées en 17 grands groupes suivant la liste abrégée d’Eurostat. On découvre la chute de la mortalité, due à la déscente des maladies circulatoires, en particulier les cardiovasculaires et, à une moindre échelle, des respiratoires, les mal définies et les causes externes. La mortalité chez le reste des groupes est augmenté au long de cette periode, surtout les tumeurs et les maladie
Insumos utilizados en la preparación de alimentos en producción porcina y su potencial de contaminación por dioxinas en la carne
Samsing,F; Bustos-López,C; Schoffer,JT; Mattar,CA; González,A; Robles,C; Acevedo,O; Valdovinos,CE;
Archivos de medicina veterinaria , 2011, DOI: 10.4067/S0301-732X2011000300011
Abstract: this study assessed the contribution of various feed ingredients used in swine feeding as a source of dioxins, furans and dioxin like polychlorinated biphenyls (dl-pcbs) contamination in pork, considering the dietary changes during breeding, raising and fattening. raw materials or feed ingredients were separated into different categories, developing a dataset with erod/h4iie bioassay results (determination of 7-ethoxyresorufin o-deethylase activity in h4iie hepatoma cell line). two types of diets were established that considered the varying percentages of ingredients necessary during the productive cycle of these animals. these two diets were based on those of common use in chile. a descriptive analysis of the information contained in the dataset was performed, characterising the observations behaviour. a transfer model in which the body burden of dioxin increases proportionally to the consumption of contaminated food was proposed. the highest average contaminant concentration, expressed as 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalent toxics derived from the erod/h4iie bioassay (tcdd-eq/g) was found in ingredients of mineral origin (16.21 pg tcdd-eq/g), followed by those of fatty acid mixtures (2.03 pg tcdd-eq/g), while the lowest average concentrations were found in dietary premixes (0.29 pg tcdd-eq/g) and vegetable oils (0.35 pg tcdd-eq/g). with regard to the fransfer model, the evaluation of the contribution of the different feed ingredients to the total amount of diet contamination showed that the vegetable components had the highest value, due to the high proportion of them in feed. the second highest contributor was the raw material of mineral source.
Prácticas de crianza de madres adolescentes de la ciudad de Duitama, Colombia
González Bossa,Alieth Rocío; Estupi?án Aponte,María Rosa;
Investigación y Educación en Enfermería , 2010,
Abstract: objective. to analyze parenting practices in teenage mothers of duitama. methodology. a qualitative assessment with comprehensive focus between february and october 2009 was conducted. it involved mothers aged between 13 and 19 years old chosen from the municipality education secretariat databases, first sampled by logical criteria and then by a snowball. emerging data from the in-depth interviews and participant observation which were subjected to a qualitative analysis, interpret feeding practices, hygiene, rest, discipline, values and support networks. results. executed by verbalization, penalties and prohibitions to instill respect and love values, teenage mothers represent the main figure of authority. they incorporate stimulating environments and games as a strategy for the formation of eating and rest habits. due to permanent fears personal hygiene is initially delegated to the maternal grandmother as a knowledge provider source, emotional and affective support are considered essential to play the moternal role which also is strengthen by health entities, especially during the breast feeding period. conclusion. teenage mothers reproduce cultural patterns which are manifested in the intervention of the other caregivers, specially the teenager?s mother; they have a great impact on daily practices.
Preparación del equipo básico de salud en temas de violencia doméstica, perspectiva de género
Baró Jiménez,Victoria Guadalupe; Mari?o Membribes,Eida Rosa; ávalos González,María Marlen;
Revista Cubana de Medicina General Integral , 2011,
Abstract: introduction: the xxi century classified as that of more violence, shows its domestic side as a problem with repercussion mainly on health's women and the health staff is lack of training to treat it. objective: to characterize the training on home violence of the basic health staff. methods: this is a research, qualitative, descriptive project including a universe of 20 persons, physicians and nurses working in consulting rooms of family physicians and emergency rooms in 2007 from the health area of the "aleida fernández chardiet" polyclinic. the following methods were used: historical-logical, systemic approach, specialized literature study, modeling, interviews, and questionnaire as well as the expert consultations. results: more than 60 % of study health staff showed a lack of knowledge with relation to the type of care must to be offered, the attitude to be followed, existence of the methodology and improvement in care in face of cases of home violence. conclusions: training of physicians and nurses of basic health staff on home violence, is scarce in cognitive and procedural dimensions although less insufficient in the axiological dimension, since they are identified with the existence and affection degree that this problem causes mainly on the population health, but also they recognize the need of training in this respect for patients and for the staff care them. this insufficiency lies in the lack of a developing and integral diagnosis of this phenomenon falling into population health, the quality of professional performance and the impact of mission of university polyclinic on the community included, suggesting the need of to include subjects of this type in the study plans of health sciences careers.
Preparación del equipo básico de salud en temas de violencia doméstica, perspectiva de género Training of basic health staff on subjects related to home violence, genre perspective
Victoria Guadalupe Baró Jiménez,Eida Rosa Mari?o Membribes,María Marlen ávalos González
Revista Cubana de Medicina General Integral , 2011,
Abstract: Introducción: el siglo XXI, clasificado como el de la violencia, revela su vertiente doméstica como problema que repercute en la salud de las mujeres principalmente, y el personal de salud carece de la preparación para tratarla. Objetivo: caracterizar la preparación sobre violencia doméstica del equipo básico de salud. Métodos: proyecto de investigación, cualitativo, descriptivo, con un universo de 20 personas, médicos y enfermeras, que laboraban en los consultorios del Médico de Familia y cuerpo de guardia, en el a o 2007, del área de salud "Aleida Fernández Chardiet". Se utilizaron los métodos histórico-lógicos, enfoque sistémico, estudio de la literatura especializada, modelación, entrevista, cuestionario y la consulta con los expertos. Resultados: más del 60 % del personal de salud explorado mostró desconocimiento con relación a qué tipo de atención brindar, curso a seguir, existencia de metodología, y perfeccionamiento en la atención, frente a casos de violencia doméstica. Conclusiones: la preparación de los médicos y enfermeras de los equipos básicos de salud, sobre violencia doméstica, es escasa en las dimensiones cognitivas y procedimentales, aunque menos insuficiente en la dimensión axiológica, ya que estos se identifican con la existencia y grado de afectación que esta problemática causa en gran medida sobre la salud de la población, pero también reconocen la necesidad de capacitación al respecto para pacientes y para el personal que los asiste. Esta insuficiencia radica en la carencia de un diagnóstico desarrollador e integral de este fenómeno que incide en la salud de la población, la calidad del desempe o profesional y el impacto de la misión del policlínico universitario en la comunidad que abarca, lo cual sugiere la necesidad de incluir temas de este tipo en los planes de estudio de las carreras de las ciencias de la salud. Introduction: the XXI century classified as that of more violence, shows its domestic side as a problem with repercussion mainly on health's women and the health staff is lack of training to treat it. Objective: to characterize the training on home violence of the basic health staff. Methods: this is a research, qualitative, descriptive project including a universe of 20 persons, physicians and nurses working in consulting rooms of Family Physicians and emergency rooms in 2007 from the health area of the "Aleida Fernández Chardiet" polyclinic. The following methods were used: historical-logical, systemic approach, specialized literature study, modeling, interviews, and questionnaire as well as the expert consultations.
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