Video Experimental Relacionado
Updated: Feb 7, 2026

03:57
Electrochemotherapy of Tumours
Published on: December 15, 2008
25.1K
Tumores cerebrales primarios en adultos
Sarah Lapointe1, Arie Perry2, Nicholas A Butowski1
1Department of Neurological Surgery, University of California, San Francisco, CA, USA.
Lancet (London, England)
|August 1, 2018
Resumen
Los tumores cerebrales malignos, en particular los gliomas, son difíciles de tratar. Los avances en biología molecular y neuro-oncología ofrecen nuevas estrategias diagnósticas y terapéuticas, pero se necesitan terapias combinadas para obtener mejores resultados.
Área de la Ciencia:
- Neuro-oncología
- La genómica
- Inmunología del cáncer
Sus antecedentes:
- Los tumores primarios del sistema nervioso central (SNC) son diversos, con tipos malignos como los gliomas que tienen un pronóstico pobre.
- Los gliomas malignos son los tumores cerebrales primarios más comunes en los adultos, caracterizados por bajas tasas de supervivencia.
- La comprensión de la patogénesis del glioma ha sido avanzada por la biología molecular, identificando alteraciones genéticas clave.
Objetivo del estudio:
- Para resaltar el impacto de la biología molecular y la genómica en la neuro-oncología.
- Para discutir el potencial de nuevas estrategias diagnósticas y terapéuticas para los tumores cerebrales.
- Subrayar la necesidad de traducir los avances de la investigación en tratamientos clínicos eficaces.
Principales métodos:
- Revisión de los avances recientes en biología molecular, genómica e inmunología del SNC.
- Análisis de la clasificación revisada de 2016 de la OMS de los tumores del SNC que incorporan alteraciones moleculares.
- Examen de los enfoques terapéuticos actuales, incluidas las terapias dirigidas, las inmunoterapias y las terapias génicas.
Principales resultados:
- Las alteraciones genéticas específicas (IDH, codeleción 1p/19q, H3 Lys27Met, RELA-fusión) ahora están integradas en la clasificación de tumores cerebrales.
- Los avances genómicos e inmunológicos anuncian una nueva era en neuro-oncología con promesas para el diagnóstico y el tratamiento.
- Las terapias con un solo agente han mostrado un éxito limitado, lo que indica la necesidad de terapias combinadas.
Conclusiones:
- La comprensión molecular es crucial para el diagnóstico, clasificación y tratamiento de tumores cerebrales.
- La traducción de los avances científicos en tratamientos efectivos sigue siendo un desafío importante.
- Los ensayos clínicos dirigidos a los biomarcadores son esenciales para el desarrollo terapéutico eficiente y el logro de respuestas antitumorales duraderas.
Videos de Conceptos Relacionados
Adult Stem Cells
33.9K
Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
33.9K
Primary Active Transport
199.4K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
199.4K
Primary Active Transport
14.4K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would...
14.4K
Primary and Secondary Growth in Roots and Shoots
60.6K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
60.6K
Primary Production
25.3K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
25.3K
Primary Distribution
547
Primary distribution systems deliver electrical power from substations to consumers through various voltage classes, with 15-kV class voltages being predominant among U.S. utilities. Older 2.5- and 5-kV classes are being replaced by 15-kV primaries, while higher 25- to 34.5-kV classes are used in high-density urban areas and rural regions with long feeders. Three-phase, four-wire multigrounded systems are widely employed for balanced power delivery, using the neutral wire as a grounding point.
547

