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Videos de Conceptos Relacionados

Nervous Tissue: Glial Cells01:31

Nervous Tissue: Glial Cells

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Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial...
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Glial Cells01:04

Glial Cells

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Nervous Tissue: Myelin01:25

Nervous Tissue: Myelin

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The myelin sheath is a multilayered lipid and protein covering that insulates the axon of a neuron, enhancing the speed of nerve impulse conduction. Axons without this sheath are referred to as unmyelinated. Two types of neuroglia, Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS) are responsible for producing myelin sheaths.
Schwann cells begin to form myelin sheaths around axons during fetal development. They wrap around a small...
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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
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Neurons: The Cell Body and the Dendrites01:23

Neurons: The Cell Body and the Dendrites

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A typical nerve cell comprises three main components: the cell body, dendrites, and the axon. The cell body, also known as the soma or perikaryon, serves as the central biosynthetic hub housing a nucleus surrounded by cytoplasm containing organelles commonly found in most cells. Notably, Nissl bodies, clusters of the rough endoplasmic reticulum and free ribosomes responsible for protein synthesis, are distinctive features of the neuronal cell body. As neurons age, aggregates of a brown pigment...
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Neuron Structure01:31

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Video Experimental Relacionado

Updated: Mar 21, 2026

Application of MultiColor FlpOut Technique to Study High Resolution Single Cell Morphologies and Cell Interactions of Glia in Drosophila
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Application of MultiColor FlpOut Technique to Study High Resolution Single Cell Morphologies and Cell Interactions of Glia in Drosophila

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La glia le da forma a las neuronas

Lu O Sun1, Ben A Barres1

  • 1Department of Neurobiology, Stanford University School of Medicine, Stanford, CA 94305, USA.

Cell
|May 7, 2016
PubMed
Resumen

Las células gliales en C. elegans dan forma a las terminales neuronales sensoriales para controlar los comportamientos de detección de temperatura. Este estudio revela los mecanismos celulares y moleculares detrás de esta función crucial del sistema nervioso.

Área de la Ciencia:

  • La neurociencia
  • Biología celular
  • Biología del desarrollo

Sus antecedentes:

  • Las células gliales son cruciales para la función del sistema nervioso, apoyando la salud y la actividad neuronal.
  • Las neuronas sensoriales requieren una organización estructural precisa para una transducción de señal efectiva.
  • La sensibilidad térmica, la capacidad de detectar la temperatura, es vital para la supervivencia y el comportamiento de los organismos.

Objetivo del estudio:

  • Investigar el papel de las células gliales en la configuración de la arquitectura de las neuronas sensoriales.
  • Para dilucidar los mecanismos celulares y moleculares por los cuales la glia influye en la estructura neuronal.
  • Para entender cómo la modelación neuronal mediada por glial impacta el comportamiento termo-sensitivo en C. elegans.

Principales métodos:

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  • Utilizado el cribado genético y las imágenes en vivo en Caenorhabditis elegans.
  • Se utilizó microscopía de alta resolución para visualizar las interacciones glio-neuronales.
  • Realizó ensayos de comportamiento para evaluar las capacidades de detección térmica.

Principales resultados:

  • Identificó tipos específicos de células gliales y vías moleculares involucradas en la formación de terminales neuronales sensoriales.
  • Se demostró que las interacciones gliales influyen directamente en la morfología de las terminaciones de las neuronas termo-sensoriales.
  • Mostró una correlación directa entre los cambios estructurales mediados por la glia y el comportamiento termo-sensitivo.

Conclusiones:

  • Las células gliales esculpen activamente las terminales neuronales sensoriales, desempeñando un papel crítico en el desarrollo y la función del sistema nervioso.
  • El estudio proporciona nuevos conocimientos sobre las bases celulares y moleculares de las interacciones gliales-neuronales.
  • Comprender estos mecanismos ofrece vías potenciales para abordar los trastornos neurológicos que involucran el procesamiento sensorial.