Activity of cholinesterases in human whole blood measured with acetylthiocholine as substrate and ethopropazine as selective inhibitor of plasma butyrylcholinesterase.
نویسندگان
چکیده
A procedure is suggested for measuring acetylcholinesterase and butyrylcholinesterase activities in human whole blood using acetylthiocholine as a substrate and ethopropazine as a selective inhibitor of butyrylcholinesterase. The procedure is suitable for screening cholinesterase activities in routine and/or field tests.
منابع مشابه
A New Assay for Measurement of Acetylcholinesterase and Butyrylcholinesterase in Canine Whole Blood Combining Specific Substrates and Ethopropazine Hydrochloride as a Selective Butyrylcholinesterase Inhibitor
Received: Revised: Accepted: April 13, 2013 April 17, 2013 April 24, 2013 In the present report, a new assay combining specific substrates and a selective BChE inhibitor (ethopropazine hydrochloride) was used to measure both AChE and BChE in canine whole blood samples. Acetylthiocholine iodide (ATCI) and butyrylthiocholine iodide (BTCI) were used as substrates, whereas 2,2’dithiodipiridine was ...
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This paper presents a protocol for routine assays of human blood cholinesterase activities which separates erythrocytes from plasma by centrifugation and measures acetylcholinesterase activity in unwashed erythrocytes and butyrylcholinesterase activity in the plasma. The recommended substrate for both enzymes is 1.0 mM acetylthiocholine. The protocol is compared with other two recommended proto...
متن کاملSpecies variation in the specificity of cholinesterases in human and rat blood samples.
Acetylthiocholine iodide (ATC) as a common substrate in the combined assay of red blood cell cholinesterase (RBC ChE) and butyrylcholinesterase (BuChE) do not provide the accurate individual enzyme activities. Hence, in the present study the two enzyme activities in the same sample were assayed with the help of two different substrate, ATC and butyrylthiocholine iodide (BTC). Specificity of BTC...
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Organophosphate (OPs) compounds are widely used in intensive agriculture to improve production, protect crops and control diseases vectors. The main mechanism of toxicity of OPs is the inhibition of the Cholinesterase enzymes. In this study the acetylcholinestrase (AChE), butyrylcholinesterase (BChE) and specific acetylcholinestrase (SAChE) activities as potential biomarkers of exposure to OPs ...
متن کاملKinetics of 13 new cholinesterase inhibitors.
Kinetics of hydrolysis of acetylcholine and acetylthiocholine by two types of acetylcholinesterase and butyrylcholinesterase inhibited by 13 new inhibitors (5 carbamates and 8 carbazates--hydrazinium derivatives) was measured in vitro in a batch reactor at 25 degrees C, pH 8, ionic strength 0.11 M and enzyme activity 3.5 U by four nondependent analytical methods. Sevin, rivastigmin (Exelon) and...
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ورودعنوان ژورنال:
- Arhiv za higijenu rada i toksikologiju
دوره 55 1 شماره
صفحات -
تاریخ انتشار 2004