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Related Concept Videos

Organization of the Nervous System01:13

Organization of the Nervous System

The nervous system is one of the most complex systems in our body. It is organized into two main divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
The CNS, comprising the brain and spinal cord, houses billions of neurons. The brain is housed in the skull, while the spinal cord is linked to the brain through the foramen magnum of the occipital bone and is surrounded by the protective structure of the vertebral column. It is responsible for processing various...
What is a Nervous System?01:25

What is a Nervous System?

Overview
Nervous System01:21

Nervous System

The nervous system coordinates body functions through its complex network of nerve cells, enabling sensation and movement. It is divided into two primary parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and the spinal cord. The brain acts as the body's control center, processing sensory information and coordinating responses. The spinal cord functions as a major signaling pathway for the brain and the rest of the body.
Extending...
Functional Divisions of the Nervous System01:23

Functional Divisions of the Nervous System

The nervous system, responsible for sensing, integrating, and responding to various stimuli, is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The PNS has two functional divisions: the sensory or afferent division and the motor or efferent division.
The sensory division transmits information from sensory receptors in the body to the CNS. It provides the CNS with knowledge about somatic senses (such as tactile, thermal, pain, and proprioceptive sensations)...
Autonomic Nervous System: Overview01:26

Autonomic Nervous System: Overview

The human nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and spinal cord, while the PNS contains nerve cells, clusters of nerve cells, and the sensory receptors that are outside the CNS. The PNS has two types of nerve cells: sensory (afferent) and motor (efferent). Sensory cells send signals to the CNS from receptors, and motor cells carry signals from the CNS to organs, muscles, and...
Peripheral Nervous System: Ganglia and Nerves01:24

Peripheral Nervous System: Ganglia and Nerves

The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
The nerve is a bundle of axons that serves as the communication highway in the PNS. Each nerve is ensheathed in a protective layer of connective tissue called the epineurium. This outermost layer safeguards the nerve and supports the...

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Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells
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Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells

Published on: May 19, 2020

Central nervous system.

D Cory Adamson1, B Ahmed K Rasheed, Roger E McLendon

  • 1Departments of Surgery (neurosurgery) and Neurobiology, Duke University, Neurosurgery Section, Durham VA Medical Center, US. cory.adamson@duke.edu

Cancer Biomarkers : Section a of Disease Markers
|November 25, 2011
PubMed
Summary
This summary is machine-generated.

Understanding central nervous system (CNS) tumors, particularly malignant gliomas like glioblastoma multiforme (GBM), is crucial. Recent advances in molecular event understanding offer hope for new therapies against these deadly brain tumors.

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Isolating Central Nervous System Tissues and Associated Meninges for the Downstream Analysis of Immune cells
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System for Focal, Closed-System Central Nervous System Injury

Published on: November 29, 2024

Area of Science:

  • Neuro-oncology
  • Molecular biology
  • Cancer research

Background:

  • Central nervous system (CNS) tumors encompass a range of benign and malignant types, with prognosis influenced by patient age, tumor location, and histology.
  • Malignant CNS tumors are more prevalent in pediatric patients (over 75%) compared to adults (about 50%).
  • Effective treatments for primary and secondary malignant CNS tumors remain limited, despite advances in understanding their molecular underpinnings.

Purpose of the Study:

  • To provide an overview of current understanding regarding the molecular and cellular events in malignant glioma initiation and progression.
  • To review the roles of glioma stem cell biology and tumor immunology in early gliomagenesis.
  • To briefly describe medulloblastoma, a common malignant primary CNS glioma in pediatric patients, and familial cancer syndromes associated with gliomas.

Main Methods:

  • Review of current literature on central nervous system tumors, focusing on molecular and cellular events.
  • Analysis of tumor distribution by location and histology.
  • Classification of astrocytomas by the World Health Organization (WHO) grading system.

Main Results:

  • Gliomas, originating from glial cells, constitute over 36% of primary CNS tumors, with astrocytomas being the most common.
  • Glioblastoma multiforme (GBM), a Grade IV astrocytoma, is the most frequent malignant primary CNS glioma in adults, posing significant treatment challenges.
  • While benign CNS tumors are often treatable with surgical resection, effective therapies for malignant counterparts are still under development.

Conclusions:

  • A growing understanding of molecular events in malignant primary CNS tumors is paving the way for novel targeted therapies currently in clinical trials.
  • Continued research into glioma stem cells and tumor immunology is essential for developing effective treatments.
  • Despite challenges, there is emerging optimism for improved outcomes in the fight against malignant CNS tumors.