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Published in: BMC Cardiovascular Disorders 1/2017

Open Access 01-12-2017 | Research article

Dynamic changes of paraoxonase 1 activity towards paroxon and phenyl acetate during coronary artery surgery

Authors: Anna Wysocka, Marek Cybulski, Henryk Berbeć, Andrzej Wysokiński, Janusz Stążka, Jadwiga Daniluk, Tomasz Zapolski

Published in: BMC Cardiovascular Disorders | Issue 1/2017

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Abstract

Background

Serum paraoxonase 1 (PON1), an enzyme associated with high – density lipoproteins (HDL) particles, inhibits the oxidation of serum lipoproteins and cell membranes. PON1 activity is lower in patients with atherosclerosis and in inflammatory diseases. The systemic inflammatory response provoked during cardiopulmonary bypass grafting may contribute to the development of postoperative complications. The aim of the present study was to estimate the dynamic changes in paraoxonase 1 (PON1) activity towards paraoxon and phenyl acetate during and after coronary artery surgery.

Methods

Twenty six patients with coronary heart disease undergoing coronary artery bypass grafting (CABG) were enrolled into the study. Venous blood samples were obtained preoperatively, after aortic clumping, after the end of operation, at 6, 18, 30 and 48 h after operation. Paraoxonase activity was measured spectrophotometrically in 50 mM glycine/NaOH buffer (pH 10.5) containing 1.0 mM paraoxon, and 1.0 mM CaCl2. Arylesterase activity was measured in 20 mM TrisCl buffer (pH 8.0) containing 1 mM phenyl acetate and 1 mM CaCl2.

Results

PON1 activity toward paraoxon and phenyl acetate significantly decreased after aorta cross clumping and increased directly after operation. PON1 activity towards paraoxon in preoperative period and PON1 activity towards phenyl acetate in seventh stage of experiment tended to inversely correlate with the occurrence of postoperative complications.

Conclusion

The paraoxonase 1 plasma activity is markedly reduced during CABG surgery.
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Metadata
Title
Dynamic changes of paraoxonase 1 activity towards paroxon and phenyl acetate during coronary artery surgery
Authors
Anna Wysocka
Marek Cybulski
Henryk Berbeć
Andrzej Wysokiński
Janusz Stążka
Jadwiga Daniluk
Tomasz Zapolski
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Cardiovascular Disorders / Issue 1/2017
Electronic ISSN: 1471-2261
DOI
https://doi.org/10.1186/s12872-017-0528-z

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