Acetylcholine Delivery
Acetylcholine Delivery - Related Videos
06:39
Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
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Cited by 36 •
2016
Intracoronary acetylcholine testing has been established for the assessment of epicardial coronary spasm more than 30 years ago. Recently, the focus has shifted towards the microcirculation and it has been shown that microvascular spasm can be detected using ACH-testing. This article describes the ACH-test and its implementation in daily routine.
10:04
Local Application of Drugs to Study Nicotinic Acetylcholine Receptor Function in Mouse Brain Slices
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Cited by 23 •
2012
In this paper, we describe a useful method to study ligand-gated ion channel function in neurons of acutely isolated brain slices. This method involves the use of a drug-filled micropipette for local application of drugs to neurons recorded using standard patch clamp techniques.
07:59
Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
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Cited by 3 •
2022
This protocol presents the acetylcholine rechallenge after nitroglycerine as an add-on procedure to spasm provocation testing. The purpose of this technique is to unmask co-existing microvascular spasm in patients with epicardial spasm and to assess the protective efficacy of nitroglycerine on a per-patient level to guide medical therapy.
09:06
Localization of Plasma Membrane and Intracellular Neuronal Nicotinic Acetylcholine Receptors Using Quantitative Imaging in Mammalian Cells
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2025
This protocol describes expression and quantification of neuronal nicotinic acetylcholine receptors subunits using the mammalian Neuro-2a cell line. pH-sensitive fluorescent tags and confocal microscopy enable precise evaluation of receptor localization at the plasma membrane versus those expressed in pH-neutral intracellular compartments, facilitating the study of nAChR trafficking and pharmacological modulation.
05:58
Testing Acetylcholine Followed by Adenosine for Invasive Diagnosis of Coronary Vasomotor Disorders
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Cited by 6 •
2021
Coronary vasomotion disorders represent frequent functional causes of angina in patients with unobstructed coronaries. The underlying mechanism of angina (endotype) in these patients can be determined by a comprehensive invasive diagnostic procedure based on acetylcholine provocation testing followed by Doppler-derived assessment of the coronary flow reserve and microvascular resistance.
FAQs
Acetylcholine delivery depends on a sequence of linked events. Choline acetyltransferase produces acetylcholine, vesicular transporters load it into synaptic vesicles, and calcium-triggered exocytosis releases the vesicles’ contents into the synaptic cleft. Examining these stages separately helps researchers identify whether cholinergic signaling is controlled at synthesis, storage, release, or another point in the communication pathway.
Calcium provides the trigger that connects cellular excitation with vesicle fusion. When calcium-dependent signaling initiates exocytosis, synaptic vesicles release acetylcholine into the synaptic cleft, allowing the neurotransmitter to reach target cells. This step is therefore distinct from acetylcholine synthesis and storage, and it provides a key point for studying how neural signals produce rapid communication.
Acetylcholinesterase rapidly terminates the acetylcholine signal after release. Its activity limits how long the neurotransmitter remains available in the synaptic cleft, helping distinguish a brief communication event from prolonged stimulation. In experimental studies, examining this termination step alongside synthesis and release can clarify how changes in metabolic control affect overall cholinergic signaling.
The principal targets described for this process are cells involved in nervous-system communication and neuromuscular junctions. Acetylcholine delivery also supports investigation of autonomic function, where cholinergic signaling contributes to biological regulation. Comparing these settings helps researchers determine how the same neurotransmitter pathway relates to neuronal communication, muscle activation, and broader physiological control.
A structured study can follow acetylcholine from production through termination: assess choline acetyltransferase activity, examine vesicular transporter loading, evaluate calcium-triggered exocytosis, and then measure acetylcholinesterase-mediated signal termination. This sequence connects molecular events with communication at target cells and helps separate defects in synthesis, release, or signal duration rather than treating delivery as a single step.
The process is relevant when researchers investigate synaptic transmission, muscle activation, autonomic function, or disorders involving cholinergic signaling. It also informs strategies that deliver acetylcholine directly or modulate its receptors and metabolic enzymes. These approaches can be compared according to whether they alter the signal itself, the receiving system, or the enzymes that control signal production and termination.