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.
journal_name
BMC Cardiovasc Disordjournal_title
BMC cardiovascular disordersauthors
Wysocka A,Cybulski M,Berbeć H,Wysokiński A,Stążka J,Daniluk J,Zapolski Tdoi
10.1186/s12872-017-0528-zsubject
Has Abstractpub_date
2017-04-04 00:00:00pages
92issue
1issn
1471-2261pii
10.1186/s12872-017-0528-zjournal_volume
17pub_type
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