Acetylcholinesterase
Acetylcholinesterase - Related Videos
10:57
Intramuscular Injections Along the Motor End Plates: A Minimally Invasive Approach to Shuttle Tracers Directly into Motor Neurons
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Cited by 20 •
2015
The efficacy of intramuscular uptake and retrograde transport of molecules to corresponding motor neurons depends on the location of the injection sites with respect to the motor end plates (MEPs). Here, we describe how to locate MEPs on skeletal muscles to optimise retrograde transport of tracers into motor neurons.
06:46
Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
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Cited by 51 •
2016
Techniques describing a gradient procedure to separate exosomes from human immunodeficiency virus (HIV) particles are described. This procedure was used to isolate exosomes away from HIV particles in human plasma from HIV-infected individuals. The isolated exosomes were analyzed for cytokine/chemokine content.
10:20
In vitro Measurements of Tracheal Constriction Using Mice
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Cited by 15 •
2012
Transgenic mice have been extremely useful in ascribing physiological function to genes. As such, research in general, and functional studies of airway, in particular, have undergone a remarkable shift toward murine models. Here we provide protocols for in vitro trachea constriction studies to evaluate smooth muscle function in murine airway.
12:38
Laser Capture Microdissection of Neurons from Differentiated Human Neuroprogenitor Cells in Culture
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Cited by 3 •
2013
Human neuroprogenitor cells (NPCs) were expanded under proliferating conditions. NPCs were differentiated into neuron-rich cultures in the presence of a combination of neurotrophins. Neuronal markers were detected by immunofluorescence staining. To isolate a pure population of neurons, NPCs were differentiated on PEN membrane slides and laser capture microdissection was performed.
FAQs
The active site provides the location where acetylcholine is hydrolyzed into choline and acetate. Because this reaction removes the neurotransmitter after it has acted, signaling does not continue indefinitely at the synapse or neuromuscular junction. Studying this catalytic step helps explain how nerve cells and muscle fibers become ready to respond to subsequent signals.
Choline and acetate are the products formed when acetylcholine is hydrolyzed. Their formation indicates that the neurotransmitter has been chemically broken down rather than remaining available to prolong stimulation. This product relationship connects enzyme activity with the functional reset of neural and muscular communication, making it relevant when examining how efficiently cholinergic signaling is terminated.
Organophosphate and carbamate compounds inhibit the catalytic activity of acetylcholinesterase. By reducing the enzyme's ability to process acetylcholine, these compounds can disrupt the normal termination of cholinergic signaling. Their effects make acetylcholinesterase a central subject in toxicology, especially when researchers investigate how chemical exposure can interfere with nervous-system and neuromuscular communication.
Acetylcholinesterase activity supports communication in more than one cholinergic setting. At synapses, it helps nerve cells reset after acetylcholine signaling; at neuromuscular junctions, the same regulatory principle allows muscle fibers to respond to later signals. Consequently, altered activity can affect coordinated movement as well as broader autonomic and nervous-system functions.
Research on acetylcholinesterase contributes to several areas of biology and medicine, including neurological disorders, therapeutic drug action, and toxicology. Investigators can relate changes in the enzyme's catalytic activity to disrupted neurotransmission or to the effects of compounds that inhibit it. This makes the enzyme useful for connecting molecular activity with nervous-system outcomes.
Altered acetylcholinesterase activity indicates that the normal control of cholinergic neurotransmission may be disturbed. Because the enzyme regulates how quickly acetylcholine signaling is terminated, changes in its activity provide context for studying effects on coordinated movement, autonomic function, and communication within the nervous system. The same principle also helps frame investigations of inhibitor exposure and neurological disease.