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Search Results: 1 - 10 of 217830 matches for " Alberto Hidalgo Tu?ón "
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“La Sombra de lo Invisible”. Explorando las síntesis pasivas en Merleau-Ponty (Rese a)
Alberto Hidalgo Tu?ón
Revista Observaciones Filosóficas , 2011,
Abstract: Rese a sobre La sombra de lo invisible: Merleau-Ponty 1961-2011 (Siete lecciones)Luís álvarez Falcón (Eutelequia Ensayo, Madrid, 2011)
Natural and Derivatized Acetogenins Promising for the Control of Spodoptera frugiperda Smith  [PDF]
José Ruiz Hidalgo, Eduardo Alberto Parellada, Lilian Di Toto Blessing, Alicia Bardón, Keshav Lalit Ameta, Nancy Vera, Adriana Neske
Journal of Agricultural Chemistry and Environment (JACEN) , 2016, DOI: 10.4236/jacen.2016.54021
Abstract: Annonaceous acetogenins (ACG), belonging to the family Annonaceae, represent a class of bioactive compounds whose toxic effects have been reported for several spe-cies of insects. Given their insecticidal properties, we first carried out the isolation of the ACG from a Brazilian collection of the seeds of Annona squamosa (Annonaceae) and prepared their methoxy methylated (MOM) and acetylated (OAc) derivatives by chemical methods. ACG analogues were semi-synthesized and characterized by spec-troscopic techniques (1H and 13C-NMR). We isolated ten natural acetogenins: squamo-cin, molvizarin, motrilin, rolliniastatin-2, almunequin, cherimolin-1, cherimolin-2, an-nonacin, squamocin D and asiminecin. The main objective of this study is to report the antifeedant, toxic and nutritional effects of three of those natural acetogenins and their acetylated and methoxy methylated derivatives on Spodoptera frugiperda Smith (Lep-idoptera: Noctuidae). The natural ACGs squamocin and molvizarin killed 100% of S. frugiperda larvae, followed by motrilin (80%). Acetylated derivatives had less toxic and nutritional effects that led to pupal mortality and adult fatal malformations. The addition of MOM derivatives to the larval diet has not toxic effects on larvae, but significantly reduces growth rate and efficiency in conversion of ingested food into biomass, affecting adult survival.
Fuentes de información y su relación con el grado de conocimientos sobre el SIDA en adolescentes de México
Caballero Hoyos,Ramiro; Villase?or Sierra,Alberto; Hidalgo San Martín,Alfredo;
Revista de Saúde Pública , 1997, DOI: 10.1590/S0034-89101997000400004
Abstract: introduction: in mexico 2.1% of the cases of aids are in adolescents. the cases of aids in the age group of 20 to 29 account for 30.5% of all the cases and an important proportion could have been infected with hiv in their adolescence, in view of the longth of the incubation period from the infection with hiv to the manifestation of the syndrome. the adolescent's knowledge of hiv/aids varies. in some urban contexts the adolescents have lay concepts and myths that could guide them into misting practices that could lead to contamination by hiv. the mass media, especially television, and interpersonal sources such as teachers, parents and peers are important sources of information about hiv/aids and have a central role in the social construction and public perception of the problem in adolescents. the objective of the study is to relate the degree of knowledge of hiv/aids to the exposure to information sources among adolescents in guadalajara city, in mexico. material and method: survey sample with autoapplied questionnaire. sample of 1,410 adolescents, male and female, of 15 to 19 years of age, in the four socioeconomic strata. the chi-square and btukey tests, 95% confidence interval for proportions and means, and simple anova factor were applied. results: a considerate degree of knowledge (mean of 13.94 correct answer out of 24, standard deviation=4.09, 95% ci=13.69-14.11) was found significant mean differences in favor of the high (15.70) and medium (14.26) strata as opposed to the low (13.51) and marginalized (12.85) (f=19.39, p <.0001, btukey level .050). the information published by the newspapers (f=11.1; p <.001) and the teachers (f=3.72; p < .05) had a direct relationship to the degree of knowledge imported by the daily exposure to the television and other social demographic variables. conclusions: the results describe the presence of inequalities by socioeconomic strata in the list of sources in information and the levels of knowledge about hiv/aids. it is ne
Asociación del Estreptococos mutans y lactobacilos con la caries dental en ni?os
Pérez Qui?ones,José Alberto; Duque de Estrada Riverón,Johany; Hidalgo Gato- Fuentes,Iliana;
Revista Cubana de Estomatolog?-a , 2007,
Abstract: dental caries is a disease widely spread in the world, therefore, it has been and it is still the most frequent disease of modern man. due to the high incidence of this oral disease, and to the great need to prevent it, it was decided to conduct this investigation in order to evaluate the connection of the cariogenic microorganisms and some demographic variables with dental caries in children. a case-control analytical study was undertaken in the municipality of matanzas, province of matanzas, during the academic course 2004-2005. the study group was composed of 11 311 children aged 6-12. a randomized sample of 900 children (300 cases and 600 controls) was selected. the highest percentage of white children (62 %) were affected by caries, 91.3 % and 40 % of the children from the case group had an elevated degree of infection caused by streptococcus mutans y lactobacilli, respectively, which showed a positive association between dental caries and these variables.
La caries dental: Algunos de los factores relacionados con su formación en ni?os
Hidalgo Gato- Fuentes,Iliana; Duque de Estrada Riverón,Johany; Pérez Qui?ones,José Alberto;
Revista Cubana de Estomatolog?-a , 2008,
Abstract: the knowledge of the factors related to the appearance of dental caries is necessary due to the fact that it is a common health problem in the population of all ages. a case-control study was conducted in matanzas during the academic course 2004-2005, aimed at determining the association of some of these risk factors with the appearance of dental caries. the study group was composed of 11 311 children aged 6-12. a sample of 900 was selected from them by a polystage sample design. the high capacity of resistance to the acid attack in the control group (57.2 %), compared with that of the cases (20.3 %), was underlined. the positive association of dental caries with the enamel resistance, its remineralization capacity, as well as with the white lesions and the enamel abnormalities, was established.
Asociación del Estreptococos mutans y lactobacilos con la caries dental en ni os Association of Streptococcus mutans and lactobacilli with dental caries in children
José Alberto Pérez Qui?ones,Johany Duque de Estrada Riverón,Iliana Hidalgo Gato- Fuentes
Revista Cubana de Estomatolog?-a , 2007,
Abstract: La caries dental es una enfermedad ampliamente extendida en el mundo, por lo que ha sido y sigue siendo la enfermedad más frecuente del hombre moderno. Dada la alta incidencia que presenta esta enfermedad bucal, así como la gran necesidad de prevenirla, decidimos realizar esta investigación, con el objetivo de evaluar la relación de los microorganismos cariogénicos y algunas variables demográficas con la caries dental en ni os. Se realizó un estudio analítico del tipo de casos y controles en el municipio de Matanzas, provincia de Matanzas, en el período comprendido por el curso académico 2004-2005. El universo estuvo constituido por 11 311 ni os entre 6 y 12 a os de edad, determinándose una muestra aleatoria de 900 ni os (300 casos y 600 controles). Se obtuvo que el mayor porcentaje (62 %) de ni os de piel blanca estaba afectados por caries, el 91,3 % y el 40 % de los ni os pertenecientes al grupo de casos, tenían un alto grado de infección por Estreptococo mutans y lactobacilos, respectivamente, lo que demuestra una asociación positiva entre la caries dental y estas variables. Dental caries is a disease widely spread in the world, therefore, it has been and it is still the most frequent disease of modern man. Due to the high incidence of this oral disease, and to the great need to prevent it, it was decided to conduct this investigation in order to evaluate the connection of the cariogenic microorganisms and some demographic variables with dental caries in children. A case-control analytical study was undertaken in the municipality of Matanzas, province of Matanzas, during the academic course 2004-2005. The study group was composed of 11 311 children aged 6-12. A randomized sample of 900 children (300 cases and 600 controls) was selected. The highest percentage of white children (62 %) were affected by caries, 91.3 % and 40 % of the children from the case group had an elevated degree of infection caused by Streptococcus mutans y lactobacilli, respectively, which showed a positive association between dental caries and these variables.
La caries dental: Algunos de los factores relacionados con su formación en ni os Dental caries: Some factors related to their appearance in children
Iliana Hidalgo Gato- Fuentes,Johany Duque de Estrada Riverón,José Alberto Pérez Qui?ones
Revista Cubana de Estomatolog?-a , 2008,
Abstract: El conocimiento de los factores relacionados con la formación de la caries dental resulta necesario debido a lo extendido que se observa este problema de salud entre la población de todas las edades. Se efectuó un estudio del tipo casos y controles en el municipio de Matanzas, en el período comprendido en el curso académico 2004-2005, con el objetivo de determinar la asociación de algunos de estos factores de riesgo con la aparición de la caries dental. El universo estuvo integrado por 11 311 ni os comprendidos entre las edades de 6 y 12 a os, del cual se extrajo una muestra de 900 ni os mediante un dise o muestral polietápico. Se destacó la alta capacidad de resistencia al ataque ácido en el grupo control (57,2 %) con respecto al de casos (20,3 %), y se estableció la asociación positiva de la caries dental con la resistencia del esmalte, su capacidad de remineralización, así como con las lesiones blancas y las anomalías del esmalte. The knowledge of the factors related to the appearance of dental caries is necessary due to the fact that it is a common health problem in the population of all ages. A case-control study was conducted in Matanzas during the academic course 2004-2005, aimed at determining the association of some of these risk factors with the appearance of dental caries. The study group was composed of 11 311 children aged 6-12. A sample of 900 was selected from them by a polystage sample design. The high capacity of resistance to the acid attack in the control group (57.2 %), compared with that of the cases (20.3 %), was underlined. The positive association of dental caries with the enamel resistance, its remineralization capacity, as well as with the white lesions and the enamel abnormalities, was established.
Fuentes de información y su relación con el grado de conocimientos sobre el SIDA en adolescentes de México
Caballero Hoyos Ramiro,Villase?or Sierra Alberto,Hidalgo San Martín Alfredo
Revista de Saúde Pública , 1997,
Abstract: INTRODUCCIóN: En México 2,1% de casos con SIDA son adolescentes. Los casos de 20 a 29 a os alcanzan a 30,5% y una proporción importante pudo infectarse VIH en la adolescencia. El nivel de conocimientos de los adolescentes sobre VIH/SIDA es variable. En contextos urbanos poseen conceptos errados y mitos que podrían orientarlos a prácticas riesgosas. Los medios masivos e interpersonales son fuentes importantes de información en la construcción social del VIH/SIDA en los adolescentes. El objetivo es relacionar el grado de conocimientos sobre VIH/SIDA con la exposición a fuentes informativas masivas e interpersonales en los adolescentes de Guadalajara, México. MATERIAL Y MéTODO: Encuesta a 1.410 adolescentes, varones y mujeres de 15 a 19 a os, en diferentes estratos socio-económicos. Se aplicaron pruebas de significación Ji Cuadrada y BTukey, Intervalos de Confianza del 95% para proporciones y medias y ANOVA factorial simple. RESULTADO: Hay un nivel regular de conocimientos con medias favorables a los estratos alto y medio. La información de periódicos y profesores tuvo relación directa con el nivel de conocimientos controlada por la exposición a la televisión y variables socio-demográficas. CONCLUSIONES: Hay desigualdades por estratos socio-económicos en la relación de las fuentes informativas y los niveles de conocimientos sobre VIH/SIDA. Es necesario fortalecer y desarrollar acciones educativas por fuentes masivas e interpersonales, con énfasis en estratos bajo y marginado.
ADE as Induction Therapy Results in Treatment of Children with Non-M3 High-Risk Acute Myeloid Leukemia, an Extrapolable Achievement in Developing Countries  [PDF]
Marta Zapata-Tarrés, Rocío Cárdenas-Cardós, Liliana Velasco-Hidalgo, Martín Pérez-García, Alberto Olaya-Vargas, Daniela Cárdenas-Pedraza, Roberto Rivera-Luna
Journal of Cancer Therapy (JCT) , 2016, DOI: 10.4236/jct.2016.73020
Abstract: Background: In Mexico, AML survival is referred in 30%. Our aim was to evaluate results with ADE protocol as induction treatment in children with non-M3 AML in a public Mexican institution. Method: We included patients with AML in a single institution between 2005 and 2013. All non-M3-AML patients received ADE as induction therapy (cytarabine 100 mg/m2 in continuous infusion from day 1 to 7, daunorrubicin 30 mg/m2 days 1, 3, 5 and etoposide 100 mg/m2 over days 1 to 5). Patients received antibiotic prophylaxis and strict scheduled appointments to assure adherence and prevent avoidable emergencies. Main Results: Eighteen patients were included. Median age was 106 months. One patient died at diagnosis so 17 were eligible for induction results analysis; eleven needed two cycles and six patients three. Remission rate was 100%. Analyzing non-M3 patients overall survival was 80.2% at 100 months. No fatal complications were observed. Stratifying by number of cycles we observe that patients receiving one ADE cycle had a 0% overall survival at short follow up, with 2 ADE cycles 80% at 100 months and with 3 cycles 100% at 60 months. Conclusion: ADE induction therapy showed improved results in overall survival compared with other standard regimens. Following the protocol we obtained 100% remission. This is an important achievement in our population. Our focus must be to ameliorate maintenance final results. These results should be reproduced in other hospitals in Mexico and other countries.
La Academia Nacional de Medicina frente al mortal fumado
José Alberto Mainieri Hidalgo
Acta Médica Costarricense , 2011,
Abstract:
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