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Stability of acetylcholinesterase (AChE) activity in blood: the effect of the preservative agent

Publication date: 03.03.2025

Archives of Forensic Medicine and Criminology, 2024, Vol. 74 (4), pp. 289-295

https://doi.org/10.4467/16891716AMSIK.24.022.21221

Authors

,
Kaja Tusiewicz
Institute of Toxicology Research, Borowa
, Poland
https://orcid.org/0000-0002-9968-2042 Orcid
Contact with author
All publications →
,
Paweł Szpot
Department of Forensic Medicine, Jagiellonian University Medical College, Kraków, Poland
, Poland
https://orcid.org/0000-0002-5352-3492 Orcid
All publications →
,
Olga Wachełko
Institute of Toxicology Research, Borowa
, Poland
https://orcid.org/0000-0003-4068-2475 Orcid
All publications →
Marcin Zawadzki
Faculty of Medicine, Department of Social Sciences and Infectious Diseases, Wroclaw University of Science and Technology
, Poland
https://orcid.org/0000-0003-2146-9724 Orcid
All publications →

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Titles

Stability of acetylcholinesterase (AChE) activity in blood: the effect of the preservative agent

Abstract

Fluoride anions are believed to inhibit acetylcholinesterase activity, thus there is a possibility that the activity may be affected by blood sampling into vials containing sodium fluoride as an anticoagulant. The paper aims to draw attention to the effect of the anticoagulant used in blood collection tubes on acetylcholinesterase activity.
A stability study was conducted for 176 days on blood samples collected into tubes containing sodium fluoride or sodium EDTA. An improved Ellman procedure, utilizing spectrophotometric determination at 436 nm, was employed in order to determine acetylcholinesterase activity.
An immediate decrease in acetylcholinesterase activity was observed in blood samples containing sodium fluoride. A significant decrease was evident immediately after blood collection and on the first day, after which the activity stabilized at 84% of the initial value. Subsequently, the activity increased to a level comparable to the initial value. In samples collected with EDTA, acetylcholinesterase activity was comparable to that in the sample without anticoagulant, and the activity remained constant for about 2 months. In conclusion, it is recommended that acetylcholinesterase activity be tested immediately after blood collection to reduce enzyme inhibition by fluoride anions, or that tubes with another anticoagulant, such as EDTA, be used.

References

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Information

Information: Archives of Forensic Medicine and Criminology, 2024, Vol. 74 (4), pp. 289-295

Article type: Original article

Titles:

English: Stability of acetylcholinesterase (AChE) activity in blood: the effect of the preservative agent
Polish:
Zmiany aktywności acetylocholinoesterazy (AChE) we krwi: wpływ dodatku środka stabilizującego

Authors

https://orcid.org/0000-0002-9968-2042

Kaja Tusiewicz
Institute of Toxicology Research, Borowa
, Poland
https://orcid.org/0000-0002-9968-2042 Orcid
Contact with author
All publications →

Institute of Toxicology Research, Borowa
Poland

https://orcid.org/0000-0002-5352-3492

Paweł Szpot
Department of Forensic Medicine, Jagiellonian University Medical College, Kraków, Poland
, Poland
https://orcid.org/0000-0002-5352-3492 Orcid
All publications →

Department of Forensic Medicine, Jagiellonian University Medical College, Kraków, Poland
Poland

https://orcid.org/0000-0003-4068-2475

Olga Wachełko
Institute of Toxicology Research, Borowa
, Poland
https://orcid.org/0000-0003-4068-2475 Orcid
All publications →

Institute of Toxicology Research, Borowa
Poland

https://orcid.org/0000-0003-2146-9724

Marcin Zawadzki
Faculty of Medicine, Department of Social Sciences and Infectious Diseases, Wroclaw University of Science and Technology
, Poland
https://orcid.org/0000-0003-2146-9724 Orcid
All publications →

Faculty of Medicine, Department of Social Sciences and Infectious Diseases, Wroclaw University of Science and Technology
Poland

Published at: 03.03.2025

Received at: 03.10.2024

Corrected at: 20.12.2024

Article status: Open

Licence: CC-BY-NC-SA  licence icon

Percentage share of authors:

Kaja Tusiewicz (Author) - 25%
Paweł Szpot (Author) - 25%
Olga Wachełko (Author) - 25%
Marcin Zawadzki (Author) - 25%

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Stability of acetylcholinesterase (AChE) activity in blood: the effect of the preservative agent

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