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Related Concept Videos

Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Membrane Fluidity01:26

Membrane Fluidity

Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is a relatively...
Membrane Fluidity01:23

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.Fatty acids tails of phospholipids can be either saturated or...
Membrane Lipids01:32

Membrane Lipids

Lipids are an essential component of all biological membranes. The average lipid content in mammalian membranes is 50%, though it can be as low as 20% in the inner mitochondrial membrane or as high as 80% in the myelin sheath present around the nerve cells.
Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the most common phospholipids present in mammalian membranes. At physiological pH, phosphatidylserine is negatively charged, while the other three...
Membrane Lipids01:32

Membrane Lipids

Lipids are an essential component of all biological membranes. The average lipid content in mammalian membranes is 50%, though it can be as low as 20% in the inner mitochondrial membrane or as high as 80% in the myelin sheath present around the nerve cells.
Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the most common phospholipids present in mammalian membranes. At physiological pH, phosphatidylserine is negatively charged, while the other three...

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Updated: Jun 10, 2026

Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient
08:06

Preparation of Synaptic Plasma Membrane and Postsynaptic Density Proteins Using a Discontinuous Sucrose Gradient

Published on: September 3, 2014

Lipid function at synapses.

Bazbek Davletov1, Cesare Montecucco

  • 1Medical Research Council Laboratory of Molecular Biology, Cambridge, UK. baz@mrc-lmb.cam.ac.uk

Current Opinion in Neurobiology
|July 27, 2010
PubMed
Summary
This summary is machine-generated.

Lipid metabolites, not just structural components, actively regulate neuronal vesicle fusion and retrieval. This highlights their crucial role in chemical neurotransmission and neurodegenerative diseases.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Chemical neurotransmission relies on synaptic vesicle dynamics (exocytosis and endocytosis).
  • Research traditionally focuses on synaptic proteins, but the lipid environment's role is increasingly recognized.
  • Lipid metabolism is implicated in neurodegenerative diseases like Alzheimer's and Parkinson's.

Purpose of the Study:

  • To review the critical role of the dynamic lipid environment in synaptic transmission.
  • To highlight how lipid metabolites modulate vesicle fusion and retrieval.
  • To discuss the implications of lipid metabolism in neurodegenerative disorders.

Main Methods:

  • Literature review of recent findings on lipids and synaptic mechanisms.
  • Analysis of evidence for lipid metabolites regulating membrane fusion and fission.
  • Discussion of the link between lipid metabolism and neurodegeneration.

Main Results:

  • Lipid metabolites actively regulate synaptic vesicle exocytosis and endocytosis.
  • Membrane lipids possess functional roles beyond structural support.
  • Dysregulated lipid metabolism is linked to neurodegenerative disease pathogenesis.

Conclusions:

  • The lipid environment is a key modulator of chemical neurotransmission.
  • Understanding lipid metabolism is crucial for addressing synaptic dysfunction and neurodegenerative diseases.
  • Further research into lipid-protein interactions at the synapse is warranted.