Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 4 de 4
Filter
1.
J. oral res. (Impresa) ; 10(5): 1-10, oct. 31, 2021. tab
Article in English | LILACS | ID: biblio-1396492

ABSTRACT

Introduction: The active learning process is certainly one of the most complex challenges in dental education. It is essential for the development of critical thinking and clinical skills. There is evidence of the need for teacher professionalization, but there is scarce literature reporting on the positive changes in the teaching profession based on such professionalization. The aim of the present study is to explore the experiences of the pedagogical performance of professionalized educators in dentistry. Material and Methods: A qualitative study was conducted using a design based on content analysis. The sample was selected for convenience and included dentists who have completed a master's degree in teaching in higher education, who were part of the teaching staff of a dental university program and with a career experience of at least 5 years. Semi-structured interviews were conducted, with three initial dimensions: Teaching Career, Motivation for Teacher Professionalization, and Impact on the teaching-learning process. The interviews were verbatim transcribed and content analysis was performed by the researchers using data triangulation. The research was approved by the research and ethics committee. Results: Six categories were established: Generational clash, Motivations to practice teaching, Motivations to professionalize teaching, Competences acquired after professionalization, Effects of professionalization in the classroom context, and Shortcomings of the professionalized educator. Conclusion: Professionalized dental educators show comprehensive improvements in their performance. They have developed practical competences for the specific needs of the courses they give.


Introducción: El proceso activo de aprendizaje es sin duda uno de los desafíos de mayor complejidad en la educación dental, el cual resulta imprescindible para el desarrollo del pensamiento crítico y habilidades clínicas. Existe evidencia de la necesidad de profesionalización docente, pero escasa literatura en odontología que exprese los cambios positivos desde el quehacer docente a partir de dicha profesionalización. El presente estudio tiene el objetivo de explorar las experiencias del quehacer pedagógico a los docentes profesionalizados de la carrera de Odontología Material y Métodos: Estudio cualitativo con un diseño basado en el análisis de contenido. La muestra fue seleccionada por conveniencia, buscando seleccionar cirujano-dentistas que hayan cursado un magíster en docencia para la educación superior, que sean parte del plantel docente de la carrera de odontología y que posean trayectoria de al menos 5 años. Se realizaron entrevistas semi-estructuradas, con tres dimensiones iniciales: Trayectoria Docente, Motivación de Profesionalización Docente e impacto en el proceso de enseñanza-aprendizaje. Las entrevistas se transcribieron verbatim y se realizó análisis de contenido, realizando triangulación entre los investigadores. La investigación contó con la aprobación del comité de ética e investigación. Resultados: Se generaron 6 categorías: Choque generacional, Motivaciones para ejercer la docencia, Motivaciones para profesionalizar la docencia, Competencias adquiridas tras la profesionalización, Efectos de la profesionalización en el contexto de aula y Falencias como docente profesionalizado. Conclusion: Los docentes profesionalizados de odontología evidencian mejoras integrales en sus quehaceres; desarrolladas de forma específica para la singularidad de cada curso.


Subject(s)
Humans , Education, Dental , Education, Dental, Continuing , Chile , Qualitative Research , Education, Professional , Learning
2.
urol. colomb. (Bogotá. En línea) ; 29(3): 136-140, 2020. tab, graf
Article in English | LILACS, COLNAL | ID: biblio-1410593

ABSTRACT

Objectives Patients undergoing retropubic radical prostatectomy (RRP) may suffer from lower urinary tract symptoms (LUTS). We aim to characterize LUTS and to evaluate the correlation and agreement between uroflowmetry and the International Prostate Symptom Score (IPSS) in patients after RRP in two reference centers. Methods An observational multicenter prospective study was conducted between December 2015 and September 2016. Patients with at least 12-months of follow-up after RRP were included; these were evaluated with uroflowmetry and the IPSS. Results A total of 90 patients were included. The mean follow-up was of 54.6 months (standard deviation [SD] = 27.52), and the mean age was 65 (SD = 6.85) years old. The mean IPSS was 7.41 (SD = 6.29), with 33.3% (n = 54) of the patients with moderate symptoms and 6.7% (n = 6) with severe symptoms. A total of 50% (n = 45) of the patients had normal uroflowmetry. Patients with an abnormal/equivocal result in the uroflowmetry had a mean of 9.31 (SD = 7.03) points in the IPSS versus 5.51 (SD = 4.82) in patients with a normal uroflowmetry result (p < 0.01). The level of agreement between mild versus moderate-to-severe LUTS and normal uroflowmetry versus abnormal/equivocal was 61.1% (k = 0.22, p = 0.04). We found that a score ≥ 10 in the IPSS had a level of agreement of 65.6% (k = 0.31, p = 0.0004). Conclusions We consider that although the IPSS cannot replace uroflowmetry and vice versa, these tests are complementary and may be useful tools in the evaluation of patients with LUTS after RRP.


Objetivos Los pacientes en quienes se realiza prostatectomía radical retropúbica (PRR) pueden sufrir de síntomas del tracto urinario inferior (STUIs). El propósito es poder caracterizar STUI y correlacionarlos con la uroflujometría y la Escala Internacional de Síntomas Prostáticos (IPSS por sus siglas en inglés). Métodos Se realizó un estudio multicéntrico prospectivo entre Diciembre de 2015 y Septiembre de 2016. Se incluyeron todos los pacientes con un seguimiento mínimo de 12 meses después de la PRR. Estos fueron evaluados con uroflujometría e IPSS. Resultados Se incluyeron un total de 90 pacientes. El seguimiento promedio fue de 54,6 meses (desviación estándar [DE] = 27,52), la edad promedio fue de 65 años (DE 6,85). El promedio de la puntuación en la IPSS fue de 7,41 (DE = 6,29) con 33,3% de los pacientes con síntomas moderados y 6,7% con síntomas severos. El 50% de los pacientes tuvieron una uroflujometría normal. Los pacientes con resultado anormal o equívoco en la uroflujometría presentaron un promedio de 9,31 (DE = 7,03) en la puntuación de la IPSS, versus 5,51 (DE = 4,82) en pacientes con una uroflujometría normal (p < 0,01). El nivel de concordancia entre los STUIs leves y moderados/severos y uroflujometría normal versus anormal/equívoca fue de 61,1% (k = 0,22, p = 0,04). Se encontró que un puntaje ≥ 10 en la IPSS tiene un nivel de concordancia del 65,6% (k = 0.31, p = 0.0004). Conclusiones Se considera que aunque la IPSS no puede reemplazar la uroflujometría y viceversam, estas pruebas son complementarias, y son herramientas útiles en la evaluación de pacientes con STUIs después de la PRR.


Subject(s)
Humans , Male , Aged , Prostatectomy , Prostatic Neoplasms , Lower Urinary Tract Symptoms , Quality of Life , Urinary Tract , Urodynamics , Prospective Studies
3.
urol. colomb. (Bogotá. En línea) ; 29(2): 91-95, 2020. ilus
Article in English | LILACS, COLNAL | ID: biblio-1402767

ABSTRACT

Introduction Transitional cell carcinoma of the bladder (TCCB) is uncommon in the pediatric population, and its etiology, natural history and epigenetics remain poorly understood. We aim to describe six cases of TCCB in pediatric patients and discuss the state of the art in the management and follow-up of the patients with this uncommon early presentation. Methods The clinicopathological data of 6 patients with TCCB who underwent transurethral resection of bladder tumor (TURBT) were obtained from our institutional database. The patient data were collected retrospectively. A review of the literature was performed, and the most relevant and trending data were analyzed. Results A total of 6 patients (4 female, 2 male) were treated at our institution between 2004 and 2019. The mean age of the sample was 12 years, and the presenting symptoms were macroscopic hematuria (3 cases), suprapubic pain (2 cases), and 1 case was an incidental finding during pelvic ultrasonography. The long-term follow-up (median follow-up of 61 months) did not reveal recurrence. Conclusion Transitional cell carcinoma of the bladder rarely presents in the pediatric population. Genetic and epigenetic anomalies have been proposed as causes, as well as carcinogenic exposure. The reported cases tend to have a good prognosis, and most are non-invasive at the diagnosis. Follow-up protocols are still lacking, as well as molecular insights on tumor development and prognostic markers.


Introducción Carcinoma de células transicionales de vejiga (CCTV) es una patología rara en la población pediátrica, su etiología, historia natural y epigenetica son pobremente entendidos. El objetivo de este articulo es describir 6 casos de CCTV en pacientes pediátricos, discutir el estado del arte en el manejo y seguimiento de los pacientes. Métodos Los datos clinicopatologicos de 6 pacientes con CCTV sometidos a resección transuretral de tumor vesical (RTU-TV) se analizaron de nuestra base de datos institucional. Los datos fueron recolectados y analizados de manera retrospectiva. Se realizo una revisión de la literatura y solo los artículos mas relevantes fueron analizados. Resultados Un total de 6 pacientes (4 mujeres, 2 hombres) fueron tratados en nuestra institución entre el 2004 y el 2019. La media de edad fue 12 años y los síntomas mas frecuentes fueron hematuria macroscópica (3 casos), dolor suprapúbico (2 casos) y en un caso fue un hallazgo incidental durante una ultrasonografía pélvica. El seguimiento a largo plazo (mediana de seguimiento de 61 meses) no mostro recurrencia en ningún paciente. Conclusión CCTV se presenta infrecuentemente en la población pediátrica, Anomalías genéticas y epigeneticas han sido propuestas como causas predisponentes al igual que la exposición a carcinogénicos. Los casos reportados tienden a tener un buen pronostico y la gran mayoría son no musculo invasivos al momento del diagnostico. Protocolos de seguimiento no están claramente definidos igual que vías moleculares en la tumorogenésis y marcadores pronósticos


Subject(s)
Humans , Male , Female , Child , Urinary Bladder , Urinary Bladder Neoplasms , Carcinoma, Transitional Cell , Ultrasonography , Guidelines as Topic , Aftercare , Epigenomics , Carcinogenesis
4.
Electron. j. biotechnol ; 19(3): 54-57, May 2016. ilus
Article in English | LILACS | ID: lil-787008

ABSTRACT

Background: Bacillus thuringiensis Cry toxins bind with different insect midgut proteins leading to toxin oligomerization, membrane insertion and pore formation. However, different Cry toxins had been shown to readily form high molecular weight oligomers or aggregates in solution in the absence of receptor interaction. The role of Cry oligomers formed in solution remains uncertain. The Cry9A proteins show high toxicity against different Lepidoptera, and no-cross resistance with Cry1A. Results: Cry9Aa655 protein formed oligomers easily in solution mediated by disulfide bonds, according to SDS-PAGE analysis under non-reducing and reducing conditions. However, oligomerization is not observed if Cry9Aa655 is activated with trypsin, suggesting that cysteine residues, C14 and C16, located in the N-terminal end that is processed during activation participate in this oligomerization. To determine the role of these residues on oligomerization and in toxicity single and double alanine substitution were constructed. In contrast to single C14A and C16A mutants, the double C14A-C16A mutant did not form oligomers in solution. Toxicity assays against Plutella xylostella showed that the C14A-C16A mutant had a similar insecticidal activity as the Cry9Aa655 protein indicating the oligomers of Cry9Aa formed in solution in the absence of receptor binding are not related with toxicity. Conclusions: The aggregation of Cry9Aa655 polypeptides was mediated by disulfide bonds. Cry9Aa655 C14 and C16C are involved in oligomerization in solution. These aggregate forms are not related to the mode of action of Cry9Aa leading to toxicity.


Subject(s)
Bacillus thuringiensis , Bacterial Proteins , Insecticides , Biological Assay , Disulfides , Electrophoresis, Polyacrylamide Gel , Bacillus thuringiensis Toxins , Mutation
SELECTION OF CITATIONS
SEARCH DETAIL