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3.
Rev. patol. respir ; 11(4): 161-167, oct.-nov. 2008. tab
Artigo em Espanhol | IBECS | ID: ibc-142861

RESUMO

Objetivos: Evaluar un potencial sesgo de selección poblacional en un estudio de expresión proteica en carcinoma broncogénico no microcítico resecado (CBNM) y realizar un análisis de la expresión molecular global y la específica según la estirpe histológica. Población y métodos: estudio observacional, de cohorte, concurrente, de todos los pacientes con CBNM tratados quirúrgicamente en nuestro Hospital entre octubre de 1993 y septiembre de 1997. Elaboramos matrices de tejido en tumor resecado y la expresión proteica se estudió mediante inmunohistoquímica. La población se dividió entre los que se pudo efectuar estudio molecular (población A) y el resto (población B). El análisis de sesgos se realizó con el test Chi cuadrado para variables cualitativas, la T de Student para cuantitativas y el Kaplan-Meier para curvas de supervivencia. Las diferencias de expresión proteica según la histología se analizaron con el test Chi cuadrado. Resultados: 180 casos totales. En 146 existía material suficiente para el estudio (población A) y en 34 no (población B). No hay diferencias significativas entre las poblaciones excepto que los casos de la población B eran más pequeños (3,3 cm vs 4,5 cm) (p= 0,04) con menos neumonectomías (t 1,8% vs 3t,6%) (p= 0,02). La estirpe más frecuente es taepidennoide (68%), De las 32 proteínas estudiadas, 8 se expresan más en epidennoides (ciclina A, CDK6, RB, p63, survivina N, EGFR, mTORp, p53) y 3 en adenocarcinomas (survivina C, ligando FAS y Cdc6). Conclusiones: Nuestra muestra representa a la población seleccionada sin que exista un sesgo de selección inicial de la suficiente magnitud como para comprometer sus resultados. En este estudio, 11 marcadores se expresan de forma diferente en función de la estirpe histológica del CBNM (AU)


To evaluate a population’s potential selection bias in a study of protein expression in resected NSCLC and to perform an analysis of global and specific molecular expression according to histological type. Population and methods: An observational, cohort, concurrent study in all patients with NSCLC surgically treated in our hospital between October 1993 and September 1997. Tissue arrays were designed from samples of resected tissue. The study method used for the evaluation of protein expression was immunohistochemistry. Population was divided into groups: patients with a molecular study (population A) and the rest (population B). Bias analyses was performed using the Chi square test for qualitative variables and the student T test for quantitative variables; the Kaplan-Meier test was used to compare survival curves. The Chi square test was used to analyse expression dijferences in proteins depending on the histological type. Results: Of total 180 cases, 146 had enough material for molecular study (population A) and 34 did not (population B). There were no differences between both populations, with the exception that tumours in population B were smaller (3.3 cm vs 4.5 cm) (p= 0.04) and with a lower frequency of pneumonectomies (11.8% vs 31.6%) (p= 0.02). The epidermoid histological type is the most frequent (68%). Of the 32 proteins studied, 8 are more frequently expressed in epidermoid types (cyclin A. CDK6, RB, p63, survivin N, EGFR, mTORp, p53) and 3 in adenoearcinomas (survivin C, FAS ligand and Cdc6). Conclusions: Our sample is representative of the selected population with no initial selection bias large enough to compromise the results. In this study, 11I markers were expressed differently according to the histological type of the NSCLC (AU)


Assuntos
Humanos , Carcinoma Broncogênico/patologia , Neoplasias Pulmonares/patologia , Carcinoma Pulmonar de Células não Pequenas/patologia , Biomarcadores Tumorais/análise , Fatores de Risco
4.
Rev Neurol ; 40(12): 729-32, 2005.
Artigo em Espanhol | MEDLINE | ID: mdl-15973638

RESUMO

INTRODUCTION: Subacute sclerosing panencephalitis is a disease affecting the central nervous system that is produced by persistent infection by a defective measles virus. This disease is very infrequent and its incidence has gone down even further in western countries since the introduction of generalised measles vaccinations. Onset of the disease is usually during infancy or adolescence. Reports of cases beginning during adulthood are scarce. CASE REPORT: We describe the case of a 30-year-old female with a slowly progressive subacute clinical picture consisting in behavioural disorders, with defrontalisation, cortico-subcortical cognitive impairment, long tract signs and visual disorders, which led the patient into a vegetative state. Four years after the onset of symptoms the patient died. The different electroencephalogram recordings performed did not show any periodic activity and magnetic resonance imaging of the head revealed cerebral atrophy with hyperintense lesions in T2 sequences in white matter. The histological study of the brain showed a chronic inflammatory infiltration with neuronal loss and demyelination, as well as intranuclear inclusions and neurofibrillary degeneration. CONCLUSIONS: The appearance of subacute sclerosing panencephalitis in adulthood is exceptional. Diagnosis requires a high degree of clinical suspicion, above all in the absence of typical symptoms, such as myoclonias or periodic complexes in EEG recordings.


Assuntos
Encéfalo/patologia , Panencefalite Esclerosante Subaguda/patologia , Adulto , Atrofia/patologia , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Doenças Desmielinizantes/complicações , Feminino , Humanos , Imageamento por Ressonância Magnética , Vírus do Sarampo/isolamento & purificação , Degeneração Neural/etiologia , Panencefalite Esclerosante Subaguda/complicações , Panencefalite Esclerosante Subaguda/virologia , Transtornos da Visão/diagnóstico , Transtornos da Visão/etiologia
5.
Rev. neurol. (Ed. impr.) ; 40(12): 729-732, 16 jun., 2005. ilus
Artigo em Espanhol | IBECS | ID: ibc-128857

RESUMO

Introduction. Subacute sclerosing panencephalitis is a disease affecting the central nervous system that is produced by persistent infection by a defective measles virus. This disease is very infrequent and its incidence has gone down even further in western countries since the introduction of generalised measles vaccinations. Onset of the disease is usually during infancy or adolescence. Reports of cases beginning during adulthood are scarce. Case report. We describe the case of a 30-year-old female with a slowly progressive subacute clinical picture consisting in behavioural disorders, with defrontalisation, cortico-subcortical cognitive impairment, long tract signs and visual disorders, which led the patient into a vegetative state. Four years after the onset of symptoms the patient died. The different electroencephalogram recordings performed did not show any periodic activity and magnetic resonance imaging of the head revealed cerebral atrophy with hyperintense lesions in T2 sequences in white matter. The histological study of the brain showed a chronic inflammatory infiltration with neuronal loss and demyelination, as well as intranuclear inclusions and neurofibrillary degeneration. Conclusions. The appearance of subacute sclerosing panencephalitis in adulthood is exceptional. Diagnosis requires a high degree of clinical suspicion, above all in the absence of typical symptoms, such as myoclonias or periodic complexes in EEG recordings (AU)


Introducción. La panencefalitis esclerosante subaguda es una enfermedad del sistema nervioso central producida por la infección persistente de un virus del sarampión defectivo. Enfermedad muy infrecuente, su incidencia ha disminuido en los países occidentales con la generalización de la vacuna contra el sarampión. El debut de la enfermedad suele ser en la infancia o la adolescencia. Existen pocos casos descritos de comienzo en la edad adulta. Caso clínico. Se trata de una mujer de 30 años de edad, con un cuadro subagudo lentamente progresivo consistente en alteraciones de la conducta, con desfrontalización, deterioro cognitivo corticosubcortical, piramidalismo y alteraciones visuales, que llevaron a la paciente a un estado vegetativo hasta que falleció, cuatro años después del inicio de la sintomatología. Varios electroencefalogramas realizados no demostraron actividad periódica y la resonancia magnética craneal reveló atrofia cerebral con lesiones hiperintensas en secuencias T2 en la sustancia blanca. El estudio histológico del cerebro mostró un infiltrado inflamatorio crónico con pérdida neuronal y desmielinización, así como inclusiones intranucleares y degeneración neurofibrilar. Conclusión. La presentación de la panencefalitis esclerosante subaguda en la edad adulta es excepcional. El diagnóstico exige una alta sospecha clínica sobre todo si están ausentes manifestaciones clínicas tan típicas como las mioclonías o los complejos periódicos electroencefalográficos (AU)


Assuntos
Humanos , Feminino , Adulto , Panencefalite Esclerosante Subaguda/diagnóstico , Sarampo/complicações , Vírus do Sarampo/patogenicidade , Eletroencefalografia , Mioclonia/epidemiologia
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