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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Editorial Board Member: Gillery, Philippe / Kazmierczak, Steven / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Schlattmann, Peter / Whitfield, John B.

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Rank 5 out of 29 in category Medical Laboratory Technology in the 2013 Thomson Reuters Journal Citation Report/Science Edition

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Declines in serum free and bound choline concentrations in humans after three different types of major surgery

Yesim Ozarda Ilcol1 / Gurkan Uncu2 / Suna Goren3 / Erkan Sayan4 / Ismail H. Ulus5

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Corresponding author: Doc. Dr. Yesim Ozarda IIcol, Uludag University Medical School, Department of Biochemistry and Clinical Biochemistry, 16059 Bursa, Turkey Phone: +90-224-4428083, Fax: +90-224-4428083,

Citation Information: Clinical Chemical Laboratory Medicine. Volume 42, Issue 12, Pages 1390–1395, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: 10.1515/CCLM.2004.259, June 2005

Publication History

Received:
July 20, 2004
Accepted:
September 15, 2004
Published Online:
2005-06-01

Abstract

We examined the changes in circulating choline status in humans in response to major surgery by measuring serum free and phospholipid-bound choline concentrations before, during and 1–72 h after total abdominal hysterectomy, off-pump coronary artery graft surgery or brain tumor surgery. Preoperatively, the mean serum free and phospholipid-bound choline concentrations in patients scheduled for abdominal hysterectomy (n=26), off-pump coronary artery grafting surgery (n=34) or brain tumor surgery (n=24) were 12.3±0.5, 12.1±0.4 and 11.4±0.4 μmol/l, and 2495±75, 2590±115 and 2625±80 μmol/l, respectively. Serum free choline and phospholipid-bound choline concentrations decreased from these baseline values to 8.8±0.7 (p<0.001), 8.8±0.5 (p<0.001) and 8.2±0.4 μmol/l (p<0.001), and 2050±108 (p<0.001), 2166±59 (p<0.001) and 1884±104 μmol/l (p<0.001) at 1 h after hysterectomy, off-pump bypass graft surgery or brain tumor surgery, respectively. They remained at these low levels for 24 h and then gradually increased towards the preoperative values at 48–72 h postoperatively. Serum cortisol increased postoperatively in all surgical patients for 24 h and its levels were inversely correlated with serum free and bound choline concentrations. These results show that circulating free and bound choline concentrations decrease for 72 h after total abdominal hysterectomy, off-pump coronary artery graft surgery or brain tumor surgery in humans.

Keywords: bound choline; brain surgery; cortisol; free choline; hysterectomy; surgical stress

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