What is Acetylcholinesterase?

Acetylcholinesterase (AChE) is an enzyme that plays a critical role in the functioning of the nervous system by catalyzing the hydrolysis of the neurotransmitter acetylcholine (ACh) into choline and acetate. This process is essential for terminating the action of ACh at the synapses between nerve cells and muscle cells, and it helps to regulate the concentration of ACh in the synaptic cleft.

Dysfunction of AChE can lead to a variety of disorders, including myasthenia gravis, Alzheimer’s disease, and organophosphate poisoning. Therefore, the measurement of AChE activity is important in several research fields, including neuroscience, toxicology, and pharmacology.

Acetylcholinesterase Assay Kit?

An acetylcholinesterase assay kit is a laboratory tool that enables researchers to measure the activity of AChE in biological samples. The kit typically includes all the necessary reagents and instructions for performing the assay, including a substrate for AChE, a developer that produces a measurable signal when the substrate is cleaved by AChE, and a reference standard for calibration.

The assay can be performed on various types of samples, such as blood, plasma, serum, tissue homogenates, or cell lysates. The sample is first treated with the assay buffer, which provides the optimal pH and ionic strength for AChE activity. Next, the substrate is added, and the sample is incubated for a specified period to allow AChE to cleave the substrate. Finally, the developer is added, and the resulting signal is measured using a spectrophotometer or a fluorescence plate reader.


The measurement of AChE activity can provide valuable information about the status of the nervous system and the effects of drugs, toxins, or diseases on AChE function. For example, decreased AChE activity has been associated with Alzheimer’s disease, and the development of AChE inhibitors has been a major strategy for treating the cognitive deficits of this disease.

Additionally, AChE activity has been used as a biomarker of exposure to organophosphate pesticides and nerve agents, which can irreversibly inhibit AChE and lead to acute toxicity. Thus, the use of AChE assay kits can provide important insights into the mechanisms of neurological disorders and toxicological effects, and facilitate the development of new therapies and diagnostic tools.


QuantiChrom™ Acetylcholinesterase Assay Kit

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Written by:

Rick Anderson  Rick Anderson

PhD in Biology

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