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Related Concept Videos

Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
Enzyme-linked Receptors01:00

Enzyme-linked Receptors

Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Notch Signaling Pathway03:14

Notch Signaling Pathway

The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Ligand-gated Ion Channels01:19

Ligand-gated Ion Channels

Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that include the...
Signal Transduction: Overview01:26

Signal Transduction: Overview

Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...

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Related Experiment Video

Updated: Jun 13, 2026

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation
09:04

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation

Published on: September 7, 2010

Toll-like receptor 4 in CNS pathologies.

Madison M Buchanan1, Mark Hutchinson, Linda R Watkins

  • 1Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309-0215, USA.

Journal of Neurochemistry
|April 21, 2010
PubMed
Summary

The brain

Area of Science:

  • Neuroscience
  • Immunology
  • Pathology

Background:

  • Central nervous system (CNS) conditions like infection, ischemia, and trauma trigger similar innate immune responses.
  • Microglia, the brain's resident immune cells, are activated in these conditions.
  • Toll-like receptor 4 (TLR4) is a key mediator in initiating inflammatory responses in the CNS.

Purpose of the Study:

  • To review current research on toll-like receptor 4 (TLR4) in CNS inflammatory diseases.
  • To explore strategies for characterizing and controlling TLR4's role in neuroinflammation.

Main Methods:

  • Literature review of studies investigating TLR4 in CNS disorders.
  • Analysis of mechanisms underlying microglial activation via TLR4.
  • Examination of therapeutic approaches targeting TLR4.

More Related Videos

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
09:51

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling

Published on: July 26, 2017

Related Experiment Videos

Last Updated: Jun 13, 2026

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation
09:04

Detection of Neu1 Sialidase Activity in Regulating TOLL-like Receptor Activation

Published on: September 7, 2010

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
09:51

Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling

Published on: July 26, 2017

Main Results:

  • Toll-like receptor 4 (TLR4) activation is a common pathway in various CNS injuries.
  • Microglial activation driven by TLR4 contributes significantly to neuroinflammation.
  • Targeting TLR4 presents a potential therapeutic strategy for inflammatory neurological conditions.

Conclusions:

  • Toll-like receptor 4 (TLR4) plays a critical role in the brain's response to diverse insults.
  • Understanding TLR4 signaling is crucial for developing treatments for neuroinflammatory diseases.