Anatomy of corpus callosum in prenatally malnourished rats

Indexación: Web of Science; ScieloThe effect of prenatal malnutrition on the anatomy of the corpus callosum was assessed in adult rats (45-52 days old). In the prenatally malnourished animals we observed a significant reduction of the corpus callosum total area, partial areas, and perimeter, as compared with normal animals. In addition, the splenium of corpus callosum (posterior fifth) showed a significant decrease of fiber diameters in the myelinated fibers without changing density. There was also a significant decrease in diameter and a significant increase in density of unmyelinated fibers. Measurements of perimeter's fractal dimensions from sagittal sections of the brain and corpus callosum did not show significant differences between malnourished and control animals. These findings indicate that cortico-cortical connections are vulnerable to the prenatal malnutrition, and suggest this may affect interhemispheric conduction velocity, particulary in visual connections (splenium).http://ref.scielo.org/nph4s

El Clima Organizacional y Su Influencia en El Desempeño Pedagógico de Los Docentes Del INSTITUTO DE EDUCACIÓN SUPERIOR TECNOLÓGICO PRIVADO JOSÉ SANTOS CHOCANO, HUARAL 2016

Este estudio ha pretendido responder al problema general: ¿De qué modo el clima organizacional influye en el desempeño pedagógico de los Docentes del Instituto de Educación Superior Tecnológico Privado José Santos Chocano, Huaral 2016 ? En las instituciones educativas del ámbito del Distrito de Huaral se observó un deficiente clima organizacional y bajo desempeño docente. Esta investigación tuvo como objetivo determinar la relación entre el clima organizacional y el desempeño laboral en los docentes del Instituto de Educación Superior Tecnológico Privado José Santos Chocano. Se tiene una Investigación no experimental, pero si de tipo descriptiva y correlacional, ya que se contó con la participación de los docentes de la Institución educativa que nos permitieron llegar a las siguientes conclusiones. El resultado que se obtuvo de la investigación fue que el Instituto de Educación Superior Tecnológico Privado “José Santos Chocano” presenta un clima institucional desfavorable y poco motivador en el desempeño pedagógico de los docentes, dichos resultados son provenientes de un inadecuado clima organizacional. Ante todo, lo mencionado se concluye que existe una influencia directa y significativa entre el clima organizacional y el desempeño pedagógico de los docentes del Instituto de Educación Superior Tecnológico Privado José Santos Chocano de Huaral. Lo que muestra que el clima organizacional influye directamente en el desempeño laboralThis study has tried to answer the general problem: How does the organizational climate influence the pedagogical performance of the Teachers of the Private Technological Higher Education Institute José Santos Chocano, Huaral 2016? In the educational institutions of the District of Huaral there was a poor organizational climate and poor teaching performance. The objective of this research was to determine the relationship between organizational climate and work performance in the teachers of the José Santos Chocano Private Technological Higher Education Institute. We have a non-experimental research but a descriptive and correlational type, since we had the participation of the teachers of the educational institution that allowed us to reach the following conclusions. The result obtained from the research was that the Institute of Higher Technological Private Education "José Santos Chocano" presents an unfavorable institutional climate and little motivation in the pedagogical performance of teachers, these results are from an inadequate organizational climate. First of all, it is concluded that there is a direct and significant influence between the organizational climate and the pedagogical performance of the teachers of the José Santos Chocano Private Technological Higher Education Institute of Huaral. What shows that the organizational climate directly influences job performanceTrabajo de investigació

Identificación y caracterización molecular de virus Orf en mujeres de Sudamérica expuestas laboralmente

Contagious Ecthyma (CE) is a severe exanthematous dermatitis caused by the Orf virus (ORFV) that mainly affects domestic small ruminants such as sheep and goats. It is a worldwide-distributed occupational zoonosis, particularly infecting those in close contact with animals or animal products such as shepherds, farmers and veterinarians, among others. In the present work, we report the first human CE case confirmed in Argentina. A phylogenetic analysis based on four gene sequences of the isolated strain responsible for the disease showed that this isolate grouped with other ORFV sequences that caused reported CE cases in sheep from the same Argentine province. We also sequenced a sample from a Chilean human case reported in 2017, whose phylogenetic analysis showed that it groups together with other Argentine isolates from locations close to the border with Chile.Fil: Peralta, Andrea Verónica. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Flores Olivares, Carlos. Universidad Mayor; ChileFil: Verna, Andrea Elizabeth. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. - Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible.; ArgentinaFil: Gonzalez Altamiranda, Erika Analia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. - Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible.; ArgentinaFil: Odriozola, Ernesto Raul. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Madariaga, Carolina. Universidad Santo Tomás (ust);Fil: Odeón, Anselmo. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: König, Guido Alberto. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación en Ciencias Veterinarias y Agronómicas. Instituto de Agrobiotecnología y Biología Molecular. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Canton, German. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. - Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible.; Argentin

Academic performance before and during the state of emergency due to COVID-19: analysis from the perspective of distance education

Faced with Covid-19, and the need to adapt to environments that guarantee continuity of educational service in the context of social distancing, many universities did not initially plan the mechanisms for adapting to the virtual modality adequately. Therefore, this period of transition to e-learning was characterised by a decrease in academic performance . This article reports on a study that focused on determining whether the transition from a classroom to a virtual teaching–learning model had an effect or influence on the academic performance of university students in mechanical and electrical engineering at a public university in Peru during the period 2018 to 2021. The purpose of the study was to ensure the quality of the education system in the face of the implementation of a hybrid mode of teaching. Methodologically, a descriptive type of investigation and longitudinal non-experimental design were undertaken. The research methodology followed a hypothetical-deductive approach. The number of participants was 157 and a registration form was used to collect data on the indicators that made up the academic performance variable. The results reveal that the switch to a virtual teaching–learning modality significantly influenced the academic performance of the students. Student’s t-test found a significance equal to 0.000. Passing grades were achieved by 98.57% of students under the virtual teaching–learning modality, compared to 68.4% under classroom learning.Campus Lima Nort

Evaluation of frequency of antibodies against Toxoplasma gondii, Neospora caninum and Sarcocystis spp. and transmission routes in sheep from Humid Pampa, Argentina

The aim of this study was to describe the frequency of ovine specific antibodies to Toxoplasma gondii, Neospora caninum and Sarcocystis spp. and to estimate different transmission routes of these infections. One hundred and thirty Texel sheep and their 117 Texel lambs were included in the study. Serum samples were tested for antibodies to T. gondii, N. caninum and Sarcocystis spp. using IFAT. Toxoplasma gondii seroprevalence was 10.00% in sheep (IC95%: 4.80-15.20%), being higher in adult sheep (≥12 year) than in younger sheep (OR 1.30; 95% CI, 1.10-1.50). N. caninum and Sarcocystis spp. seroprevalences were 1.54% (IC95%: 0.00-5.70) and 72.09% (IC95%: 67.70-82.70), respectively, with no association between age and seropositivity in sheep (P>0.05). T. gondii seroprevalence in lambs was 4.27% (IC95%: 0.61-7.94). No association between T. gondii serological status in sheep and their lambs was detected (P = 0.07). Two T. gondii and Sarcocystis spp. seropositive lambs were euthanized and T. gondii and Sarcocystis spp. DNA was detected by PCR in their tissues. In conclusion, the increase of T. gondii seropositivity in relationship with sheep age and the lack of association between sheep-lamb serological status, suggest that horizontal infection is the main transmission route in this flock as reported before. Due to the low number of N. caninum-seropositive ewes no assumptions can be done about the impact of this parasite in this flock. According with previous reports, the main transmission route for Sarcocystis spp. in this species in the present study was horizontal.Facultad de Ciencias Veterinaria

Manejo multidisciplinario de la Neutropenia Febril: Consenso Institucional. Lima, Perú.

Background: To provide recommendations based on the best available scientific evidence for the multidisciplinary management of febrile neutropenia. The development included the stages: approval of the creation of the Working Group (WG); CPG search; analysis and synthesis of the evidence that led to establishing the recommendation of the selected CPGs, design of the consensus document, internal review. All phases were carried out through panel meetings using virtual platforms during 03 months. The “GRADE” system was used to establish the strength and direction of the recommendations. The recommendations cover the prevention, diagnosis and treatment of febrile neutropenia in oncohematological patients. Twenty-eight recommendations were developed. The topics approached were: correct evaluation; timely diagnosis, adequate antibiotic treatment, vaccination against influenza and pneumococcus, administration of colony-stimulating factor and special management of pediatric patients for diagnosis, treatment.Introducción: Brindar recomendaciones basadas en la mejor evidencia científica disponible para el manejo multidisciplinario de la neutropenia febril. El desarrollo abarco las etapas: aprobación de la conformación del Grupo Elaborador (GE); búsqueda de GPC; análisis y síntesis de la evidencia que llevó al establecimiento de la recomendación de las GPC seleccionadas, diseño del documento consenso, revisión interna. Todas las fases fueron llevadas a cabo mediante reuniones de panel a través del uso de plataformas virtuales durante 03 meses. Se utilizó el sistema “GRADE” para establecer la fuerza y dirección de las recomendaciones. Las recomendaciones abarcan la prevención, el diagnóstico y tratamiento de la neutropenia febril en pacientes oncohematológicos. Se formularon 28 recomendaciones. Los temas abordados han sido relacionados a: correcta evaluación; diagnóstico oportuno, tratamiento antibiótico adecuado, vacunación contra influenza y neumococo, administración de factor estimulante de colonias y manejo especial en pacientes pediátricos para diagnóstico, tratamiento

Mutational Landscape of CEBPA in Mexican Pediatric Acute Myeloid Leukemia Patients: Prognostic Implications

BackgroundIn Mexico, the incidence of acute myeloid leukemia (AML) has increased in the last few years. Mortality is higher than in developed countries, even though the same chemotherapy protocols are used. CCAAT Enhancer Binding Protein Alpha (CEBPA) mutations are recurrent in AML, influence prognosis, and help to define treatment strategies. CEBPA mutational profiles and their clinical implications have not been evaluated in Mexican pediatric AML patients.Aim of the StudyTo identify the mutational landscape of the CEBPA gene in pediatric patients with de novo AML and assess its influence on clinical features and overall survival (OS).Materials and MethodsDNA was extracted from bone marrow aspirates at diagnosis. Targeted massive parallel sequencing of CEBPA was performed in 80 patients.ResultsCEBPA was mutated in 12.5% (10/80) of patients. Frameshifts at the N-terminal region were the most common mutations 57.14% (8/14). CEBPA biallelic (CEBPABI) mutations were identified in five patients. M2 subtype was the most common in CEBPA positive patients (CEBPAPOS) (p = 0.009); 50% of the CEBPAPOS patients had a WBC count > 100,000 at diagnosis (p = 0.004). OS > 1 year was significantly better in CEBPA negative (CEBPANEG) patients (p = 0.0001). CEBPAPOS patients (either bi- or monoallelic) had a significantly lower OS (p = 0.002). Concurrent mutations in FLT3, CSF3R, and WT1 genes were found in CEBPAPOS individuals. Their contribution to poor OS cannot be ruled out.ConclusionCEBPA mutational profiles in Mexican pediatric AML patients and their clinical implications were evaluated for the first time. The frequency of CEBPAPOS was in the range reported for pediatric AML (4.5–15%). CEBPA mutations showed a negative impact on OS as opposed to the results of other studies

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

Salud de los trabajadores

Actividad física y su relación con los factores de riesgo cardiovascular de carteros chilenosAnálisis de resultados: riesgos psicosociales en el trabajo Suceso-Istas 21 en Cesfam QuellónAusentismo laboral por enfermedades oftalmológicas, Chile 2009Brote de diarreas por norovirus, posterremoto-tsunami, Constitución, Región del MauleCalidad de vida en profesionales de la salud pública chilenaCaracterización del reposo laboral en personal del SSMN durante el primer semestre de 2010Concentración de nicotina en pelo en trabajadores no fumadores expuestos a humo de tabaco ambientalCondiciones de trabajo y bienestar/malestar docente en profesores de enseñanza media de SantiagoDisfunción auditiva inducida por exposición a xilenoErgonomía aplicada al estudio del síndrome de dolor lumbar en el trabajoEstimación de la frecuencia de factores de riesgo cardiovascular en trabajadores de una empresa mineraExposición a plaguicidas inhibidores de la acetilcolinesterasa en Colombia, 2006-2009Factores de riesgo y daños de salud en conductores de una empresa peruana de transporte terrestre, 2009Las consecuencias de la cultura en salud y seguridad ocupacional en una empresa mineraPercepción de cambios en la práctica médica y estrategias de afrontamientoPercepción de la calidad de vida en la Universidad del BiobíoPesos máximos aceptables para tareas de levantamiento manual de carga en población laboral femeninaRiesgo coronario en trabajadores mineros según la función de Framingham adaptada para la población chilenaTrastornos emocionales y riesgo cardiovascular en trabajadores de la salu