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1.
Rev. Cuerpo Méd. HNAAA ; 15(1): 118-125, 20220301. tab
Artigo em Espanhol | BIGG - guias GRADE | ID: biblio-1411007

RESUMO

Introducción: El presente artículo resume el proceso de elaboración de la Guía de Práctica Clínica (GPC) para el manejo de dolor en pacientes oncológicos. Este proceso se llevó a cabo con la participación de un equipo multidisciplinario de médicos asistenciales, metodólogos y diversos revisores externos (especialistas con dominio en la metodología y el tema). La priorización de preguntas PICO fue realizada por el Grupo Elaborador de la GPC (GEG), acordando trabajar cinco preguntas PICO. Para dar respuesta a las preguntas se realizó una búsqueda sistemática de GPC, revisiones sistemáticas y estudios primarios. Se utilizó la metodología GRADE y los lineamientos de la normativa nacional para la formulación de recomendaciones. Se formularon 12 recomendaciones (10 fuertes y 2 débiles), 5 puntos de buena práctica clínica y 4 cuadros consensuados sobre el manejo de dolor oncológico. Los temas que abarcaron las recomendaciones para el manejo de dolor en pacientes oncológicos fueron: intervención temprana de tratamiento, terapia analgésica en dolor leve a moderado y en dolor moderado a severo, dolor neuropático e intervenciones no farmacológicas.


Assuntos
Humanos , Manejo da Dor/normas , Dor do Câncer/tratamento farmacológico , Dor do Câncer/terapia , Analgesia
2.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1398376

RESUMO

Introducción: El presente artículo resume el proceso de elaboración de la Guía de Práctica Clínica (GPC) para el manejo de dolor en pacientes oncológicos. Este proceso se llevó a cabo con la participación de un equipo multidisciplinario de médicos asistenciales, metodólogos y diversos revisores externos (especialistas con dominio en la metodología y el tema). La priorización de preguntas PICO fue realizada por el Grupo Elaborador de la GPC (GEG), acordando trabajar cinco preguntas PICO. Para dar respuesta a las preguntas se realizó una búsqueda sistemática de GPC, revisiones sistemáticas y estudios primarios. Se utilizó la metodología GRADE y los lineamientos de la normativa nacional para la formulación de recomendaciones. Se formularon 12 recomendaciones (10 fuertes y 2 débiles), 5 puntos de buena práctica clínica y 4 cuadros consensuados sobre el manejo de dolor oncológico. Los temas que abarcaron las recomendaciones para el manejo de dolor en pacientes oncológicos fueron: intervención temprana de tratamiento, terapia analgésica en dolor leve a moderado y en dolor moderado a severo, dolor neuropático e intervenciones no farmacológicas.


Background: The article summarizes the process of elaboration of the Clinical Practice Guide (CPG) for the management of cancer patients. The elaboration process was carried out with the participation of a multidisciplinary team of assisting physicians, methodologists and various external reviewers (specialists with mastery in the methodology and the subject). The prioritization of PICO questions was carried out by the GPC Elaboration Group (GEG), after which 05 PICO questions were concluded. To answer the questions, a systematic search of CPGs, systematic reviews and primary studies was carried out. The "GRADE" methodology and the guidelines of national regulations were used to formulate recommendations. Twelve recommendations were made (ten strong and two weak),5 points of good clinical practice,04 consensus tables on the management of cancer pain. The topics that covered the recommendations for pain management in cancer patients were: early treatment intervention, analgesic therapy in mild to moderate pain and moderate to severe pain, neuropathic pain and non-pharmacological interventions

3.
Nat Cell Biol ; 22(6): 621-629, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32393884

RESUMO

Epigenetic marks are reprogrammed in the gametes to reset genomic potential in the next generation. In mammals, paternal chromatin is extensively reprogrammed through the global erasure of DNA methylation and the exchange of histones with protamines1,2. Precisely how the paternal epigenome is reprogrammed in flowering plants has remained unclear since DNA is not demethylated and histones are retained in sperm3,4. Here, we describe a multi-layered mechanism by which H3K27me3 is globally lost from histone-based sperm chromatin in Arabidopsis. This mechanism involves the silencing of H3K27me3 writers, activity of H3K27me3 erasers and deposition of a sperm-specific histone, H3.10 (ref. 5), which we show is immune to lysine 27 methylation. The loss of H3K27me3 facilitates the transcription of genes essential for spermatogenesis and pre-configures sperm with a chromatin state that forecasts gene expression in the next generation. Thus, plants have evolved a specific mechanism to simultaneously differentiate male gametes and reprogram the paternal epigenome.


Assuntos
Proteínas de Arabidopsis/genética , Arabidopsis/genética , Reprogramação Celular , Cromatina/genética , Metilação de DNA , Epigênese Genética , Histonas/genética , Sequência de Aminoácidos , Arabidopsis/crescimento & desenvolvimento , Arabidopsis/metabolismo , Proteínas de Arabidopsis/metabolismo , Cromatina/metabolismo , Histonas/metabolismo , Lisina/genética , Lisina/metabolismo , Processamento de Proteína Pós-Traducional , Homologia de Sequência
4.
Plant Reprod ; 32(1): 39-43, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30671645

RESUMO

Pollen represents the male sexual lineage in flowering plants. At maturity, pollen grains are composed of a companion vegetative cell with embedded sperm. During pollen development, these two cell types acquire vastly differing cell fates. Underlying this differential fate acquisition is dramatic reconfiguration of pollen chromatin that is highly evident at a cytological level. The precise link between histone mark deposition and fate acquisition remains largely unexplored, which in part has been hindered by the difficulty in working with pollen in model plant species like Arabidopsis. Here, we describe a simple and robust protocol to isolate Arabidopsis pollen nuclei and immunostain for histone marks. Plant growth aside, the protocol can be performed over 2 days with few Arabidopsis plants, thus allowing multiple genotypes to be analysed in parallel. We also describe a method to de-mask epitopes through antigen retrieval, which vastly improves the signal for antibodies that target heterochromatic histone marks.


Assuntos
Arabidopsis/ultraestrutura , Núcleo Celular/ultraestrutura , Pólen/ultraestrutura , Coloração e Rotulagem/métodos , Antígenos de Plantas/análise , Antígenos de Plantas/imunologia , Histonas/análise , Histonas/imunologia , Imuno-Histoquímica
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