Related Experiment Video
Updated: Jul 4, 2026

10:14
Recapitulation of an Ion Channel IV Curve Using Frequency Components
Published on: February 8, 2011
Arachidonic acid and ion channels: an update
1Physiologisches Institut, Universität des Saarlandes, Homburg-Saar, Germany. hmeves@t-online.de
British Journal of Pharmacology
|June 17, 2008
Summary
Arachidonic acid (AA) affects cells by interacting with ion channels, including TRP and SOCE channels. This review distinguishes AA
Area of Science:
- Molecular Biology
- Cell Physiology
- Pharmacology
Background:
- Arachidonic acid (AA), a polyunsaturated fatty acid, exerts diverse effects on living cells.
- Many AA actions are mediated through its interaction with various ion channels.
- Recent research has focused on novel ion channels like TRP and SOCE channels.
Purpose of the Study:
- To review the current understanding of arachidonic acid's effects on ion channels.
- To differentiate the direct effects of AA from those of its metabolites.
- To highlight the clinical relevance of AA metabolites in disease and therapy.
Main Methods:
- Literature review of studies on arachidonic acid and ion channels.
- Analysis of research on TRP channels, SOCE channels, and non-SOCE channels.
- Distinguishing direct AA effects from metabolite-mediated effects.
Main Results:
- Arachidonic acid modulates classical ion channels, TRP channels, and SOCE/non-SOCE channels.
- The review clarifies whether AA or its metabolites are responsible for observed effects.
- Certain AA metabolites, like leukotrienes and prostaglandins, have significant clinical implications.
Conclusions:
- Arachidonic acid plays a crucial role in cellular function via ion channel modulation.
- Understanding the distinct roles of AA and its metabolites is vital for therapeutic strategies.
- Lipid mediators derived from AA are important targets for treating various diseases.
Related Concept Videos
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...
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...
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...
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...
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...
Non-gated Ion Channels
Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.
Non-gated Ion Channels
Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.
Mechanically-gated Ion Channels
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...

