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Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

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...
Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Nervous Tissue: Glial Cells01:31

Nervous Tissue: Glial Cells

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 cells that interact...
Healing I: Introduction01:11

Healing I: Introduction

Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...
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Overview of Regeneration and Repair

Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...

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Related Experiment Video

Updated: Jun 7, 2026

Anatomically Inspired Three-dimensional Micro-tissue Engineered Neural Networks for Nervous System Reconstruction, Modulation, and Modeling
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Healing genes in the nervous system.

Xandra O Breakefield1, Miguel Sena-Esteves

  • 1Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. breakefield@hms.harvard.edu

Neuron
|October 20, 2010
PubMed
Summary

Gene therapy offers new treatments for nervous system diseases. This review covers delivery methods, preclinical strategies, clinical challenges, and ethical issues in gene therapy.

Area of Science:

  • Neuroscience
  • Genetics
  • Biotechnology

Background:

  • Gene therapy is an evolving field with significant potential for treating neurological disorders.
  • Advances in genetic engineering have paved the way for novel therapeutic strategies.

Purpose of the Study:

  • To provide an overview of gene therapy delivery vehicles for nervous system diseases.
  • To discuss preclinical strategies and clinical limitations of current gene therapy approaches.
  • To address the ethical considerations surrounding gene therapy applications.

Main Methods:

  • Review of current literature on gene therapy delivery systems.
  • Analysis of preclinical studies targeting neurological diseases.
  • Examination of clinical trial data and ethical frameworks.

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Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration

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Last Updated: Jun 7, 2026

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08:52

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Published on: January 10, 2018

Main Results:

  • Various delivery vehicles are available for gene therapy, each with specific advantages and disadvantages.
  • Preclinical strategies show promise for treating major nervous system diseases.
  • Significant clinical limitations and ethical considerations need to be addressed for widespread adoption.

Conclusions:

  • Gene therapy holds great promise for treating neurological conditions.
  • Further research and ethical deliberation are crucial for advancing gene therapy applications in the nervous system.