Tiempo requerido para la administración y evaluación del Cuestionario Prunape Pre-Pesqusia (CPPP) / Time needed for the adminsitration and evaluation of the Prunape Pre- Pesquisia (CPPP) questionnaire

Con el objetivo de evaluar el tiempo que toma la administración de Cuestionario PrunPe Pre-Pesquisa (CPPP), diseñado en Acumar para detectar en forma confiable aquellos niños con alto riesgo de no pasar la Prueba Nacional de Pesquisa (PRUNAPE), se midió en forma ciega a 98 madres con sus niños, el tiempo que lleva su llenado y evaluación de dos formas: autoadministrado (por la madre), y administrado por personal de salud. Se evaluaron dos partes: a) la administración, y b) la evaluación final (pasa / no pasa el cuestionario). El tiempo lo midieron los mismos 11 profesionales de la salud que administraron el cuestionario, con cronómetros de teléfonos celulares, y con la precisión de un segundo. Los cuestionarios son cinco, uno para cada grupo de edad: 6 a 11, 12 a 17, 18 a 29, 30 a 47, 48 a 71 meses. La mediana del tiempo total de toma del cuestionario fue de 7 minutos (´) 33segundos (“), y 4´47” y 12¨19” para los percentiles 10° y 90° respectivamente. Los tiempos no fueron los mismos para los cinco formularios ni para los que pasaron o no pasaron el cuestionario. El análisis de variancia (P 0.01)mostró que las dos variables influyen significativamente en la duración de la toma: si el niño no pasa y el niño es mayor de 30 meses, el tiempo es más largo. El CPPP resulta una herramienta que se administra en poco tiempo, lo que la hace costo-efectiva para seleccionar los niños a quienes es altamente necesario administrarle la Prueba Nacional de Pesquisa en programas de tamizaje en grandes grupos de población.

With the aim to evaluate the time to administer the PrunPe Pre-Pesquisa Questionnaire (CPPP), designed in Acumar to reliably identify those children at high risk of not passing the National Screening Test (PRUNAPE)....

Tiempo requerido para la administración y evaluación del Cuestionario Prunape Pre-Pesqusia (CPPP) / Time needed for the adminsitration and evaluation of the Prunape Pre- Pesquisia (CPPP) questionnaire

Con el objetivo de evaluar el tiempo que toma la administración de Cuestionario PrunPe Pre-Pesquisa (CPPP), diseñado en Acumar para detectar en forma confiable aquellos niños con alto riesgo de no pasar la Prueba Nacional de Pesquisa (PRUNAPE), se midió en forma ciega a 98 madres con sus niños, el tiempo que lleva su llenado y evaluación de dos formas: autoadministrado (por la madre), y administrado por personal de salud. Se evaluaron dos partes: a) la administración, y b) la evaluación final (pasa / no pasa el cuestionario). El tiempo lo midieron los mismos 11 profesionales de la salud que administraron el cuestionario, con cronómetros de teléfonos celulares, y con la precisión de un segundo. Los cuestionarios son cinco, uno para cada grupo de edad: 6 a 11, 12 a 17, 18 a 29, 30 a 47, 48 a 71 meses. La mediana del tiempo total de toma del cuestionario fue de 7 minutos (´) 33segundos (ô), y 4´47ö y 12¿19ö para los percentiles 10° y 90° respectivamente. Los tiempos no fueron los mismos para los cinco formularios ni para los que pasaron o no pasaron el cuestionario. El análisis de variancia (P 0.01)mostró que las dos variables influyen significativamente en la duración de la toma: si el niño no pasa y el niño es mayor de 30 meses, el tiempo es más largo. El CPPP resulta una herramienta que se administra en poco tiempo, lo que la hace costo-efectiva para seleccionar los niños a quienes es altamente necesario administrarle la Prueba Nacional de Pesquisa en programas de tamizaje en grandes grupos de población

[Osteochondrosarcoma: clinical and morphological comparisons].

A total of 109 patients with chondrosarcoma were operated on in 2005-2007. Classical primary chondrosarcoma was verified in 77 cases; secondary and periosteal chondrosarcomas were confirmed in 28 and 4 patients, respectively. By analyzing their findings and the data available in the literature, the authors considered the current problems in the classification and diagnosis of the most common types of cartilaginous malignancies. New techniques, including cytogenetic assay, significantly alleviate this problem. However, the most precise cytogenetic assays are expensive and not always accessible for usual oncological care. The principal criteria in practice are a clinical picture, the results of radiation studies, and the standard histological method that establishes the differentiation of chondrosarcoma, the extent of a process, and the specific features of tumor growth. Immunohistochemical assay are of no crucial importance. In some cases, fine-needle biopsy may provide useful information to make a decision on treatment policy.

[Carcinoid of Meckel's diverticulum. Report of a case and review of the literature]. / Carcinóide em divertículo de Meckel. Apresentação de caso e revisão da literatura.

The presence of carcinoid tumor in a Meckel's diverticulum is a rare entity. This report describes a 56-year-old man who was admitted to hospital with symptomatic gallbladder stones. At laparotomy the gallstones were confirmed and routine exploration of the peritoneal cavity identified a small bowel diverticulum about 60 cm of the ileocecal valve. Cholecystectomy and resection of a small bowel segment containing the diverticulum were performed. Histology revealed carcinoid tumour in Meckel's diverticulum.

A comparison of the intercalative binding of non-reactive benzo[a]pyrene metabolites and metabolite model compounds to DNA.

The reversible DNA physical binding of a series of non-reactive metabolites and metabolite model compounds derived from benzo[a]pyrene (BP) has been examined in UV absorption and in fluorescence emission and fluorescence lifetime studies. Members of this series have steric and pi electronic properties similar to the highly carcinogenic metabolite trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (BPDE) and the less potent metabolite 4,5-epoxy-4,5-dihydrobenzo(a)pyrene (4,5-BPE). The molecules examined are trans-7,8-dihydroxy-7,8-dihydrobenzo[a]-pyrene (7,8-di(OH)H2BP), 7,8,9,10-tetrahydroxytetrahydrobenzo[a]pyrene (tetrol) 7,8,9,10-tetrahydrobenzo[a]pyrene (7,8,9,10-H4BP), pyrene, trans-4,5-dihydroxy-4,5-dihydrobenzo[a]pyrene (4,5-di(OH)H2BP) and 4,5-dihydrobenzo[a]pyrene (4,5-H2BP). In 15% methanol at 23 degrees C the intercalation binding constants of the molecules studied lie in the range 0.79-6.1 X 10(3) M-1. Of all the molecules examined the proximate carcinogen 7,8-di(OH)-H2BP is the best intercalating agent. The proximate carcinogen has a binding constant which in UV absorption studies is found to be 2.8-6.0 times greater than that of the other hydroxylated metabolites. Intercalation is the major mode of binding for 7,8-di(OH)H2BP and accounts for more than 95% of the total binding. Details concerning the specific role of physical bonding in BP carcinogenesis remain to be elucidated. However, the present studies demonstrate that the reversible binding constants for BP metabolites are of the same magnitude as reversible binding constants which arise from naturally occurring base-base hydrogen bonding and pi stacking interactions in DNA. Furthermore, previous autoradiographic studies indicate that in human skin fibroblasts incubated in BP, pooling of the unmetabolized hydrocarbons occurs at the nucleus. The high affinity of 7,8-di(OH)H2BP for DNA may play a role in similarly elevating in vivo nuclear concentrations of the non-reactive proximate carcinogen.

A comparison of the DNA intercalative binding of bay versus K region metabolites of benzo[a]pyrene.

The DNA intercalating properties of trans-7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene (1) and of trans-4,5-dihydroxy-4,5-dihydrobenzo[a]pyrene (2) have been compared in UV absorption and in fluorescence emission and fluorescence lifetime studies. Molecules 1 and 2 represent steric models of the two epoxide containing metabolites of benzo[a]pyrene, trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (BPDE) and benzo[a]pyrene-4,5-oxide. The former of these metabolites is a highly carcinogenic bay region metabolite, the latter is a much less carcinogenic K region metabolite. The association constant for intercalation for model 1 is 5,226 M-1. This is more than 2.7 times greater than that for molecule 2. These results taken together with results form previous studies of bay and K region metabolite models of benz[a]anthracene suggest that intercalation is important to the overall carcinogenic activity of polycyclic aromatic hydrocarbons.

Ensino aprendizagem. Relato de uma experiencia. / Apprenticeship-training Report of a experience

Apresentacao de um processo em ensino-aprendizagem desenvolvido num servico universitario durante tres anos uma populacao heterogenea de medicos e estudantes de medicina. Enfoque dos principais aspectos metodologicos tanto do ponto de vista estatico, de organizacao, como dinamico, de seu funcionamento. Visao critica do trabalho em grupo com a abertura de novas possibilidades na relacao medico-paciente