Elevation of serum cerebral injury markers correlates with serum choline decline after coronary artery bypass grafting surgery
-
Yesim Ozarda Ilcol
Abstract
The aims of this study were to determine circulating choline status and its relationship to circulating levels of S-100β protein and neuron-specific enolase, biochemical markers of cerebral injury and cognitive decline, after coronary artery bypass grafting (CABG) surgery. Preoperatively, patients scheduled for off-pump or on-pump CABG surgery had serum concentrations of 12.0±0.2 and 11.7±0.4μmol/L free choline and 2640±65 and 2675±115μmol/L phospholipid-bound choline, respectively. Serum free and bound choline levels decreased by 22–37% or 34–47% and 16–36% or 31–38% at 48h after off-pump or on-pump surgery, respectively. Serum S-100β and neuron-specific enolase increased from preoperative values of 0.083±0.009 and 6.3±0.2μg/L to 0.405±0.022 and 11.4±0.8μg/L, respectively, at 0h postoperatively and remained elevated for 48h after off-pump surgery. Serum free and bound choline concentrations were inversely correlated with the concentrations of S-100β (r=−0.798; p<0.001 and r=−0.734; p<0.001) and neuron-specific enolase (r=−0.840; p<0.001 and r=−0.728; p<0.001). In conclusion, CABG surgery induces a decline in serum free and phospholipid-bound choline concentrations. The decreased serum choline concentrations were inversely correlated with the elevated levels of circulating cerebral injury markers. Thus, a decline in circulating choline may be involved in postoperative cognitive decline.
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©2006 by Walter de Gruyter Berlin New York
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- Sixth International Symposium on Molecular Diagnostics, Graz, Austria, May 25-27, 2006
Articles in the same Issue
- Natriuretic peptides and evidence-based quality specifications
- Preanalytical variability: the dark side of the moon in laboratory testing
- Clinical relevance of biological variation: the lesson of brain natriuretic peptide (BNP) and NT-proBNP assay
- Hepatorenal syndrome
- Modified Levey-Jennings charts for calculated laboratory tests
- Increased free malondialdehyde concentrations in smokers normalise with a mixed fruit and vegetable juice concentrate: a pilot study
- The exponentially weighted moving average (EWMA) rule compared with traditionally used quality control rules
- Intermethod calibration of alanine aminotransferase (ALT) and γ-glutamyltransferase (GGT) results: application to Fibrotest® and Actitest® scores
- Comparison of TEST 1 with SRS 100 and ICSH reference method for the measurement of the length of sedimentation reaction in blood
- Multicenter evaluation of the interference of hemoglobin, bilirubin and lipids on Synchron LX-20 assays
- Technical evaluation of the Beckman Coulter OV-Monitor (CA 125 antigen) immunoassay
- Erythrocyte membrane Na+,K+-ATPase and Mg2+-ATPase activities in subjects with methylenetetrahydrofolate reductase (MTHFR) 677 C→T genotype and moderate hyperhomocysteinaemia. The role of L-phenylalanine and L-alanine
- Matrix metalloproteinases and their inhibitors in different acute stroke subtypes
- Pyrosequencing protocol requiring a unique biotinylated primer
- Detection of antibodies against 60-, 65- and 70-kDa heat shock proteins in paediatric patients with various disorders using Western blotting and ELISA
- Quantitative determination of erythrocyte folate vitamer distribution by liquid chromatography-tandem mass spectrometry
- Time-level relationship between indicators of oxidative stress and Glasgow Coma Scale scores of severe head injury patients
- Stepwise strategies in analysing haematuria and leukocyturia in screening
- Elevation of serum cerebral injury markers correlates with serum choline decline after coronary artery bypass grafting surgery
- Drug screening in urine by cloned enzyme donor immunoassay (CEDIA) and kinetic interaction of microparticles in solution (KIMS): a comparative study
- Release of anandamide from blood cells
- Rapid decrease in plasma D-lactate as an early potential predictor of diminished 28-day mortality in critically ill septic shock patients
- Evaluation of an immunoassay of whole blood sirolimus in pediatric transplant patients in comparison with high-performance liquid chromatography/tandem mass spectrometry
- Sample processing and its preanalytical impact on the measurement of circulating matrix metalloproteinases
- Physiological matrix metalloproteinase (MMP) concentrations: comparison of serum and plasma specimens
- Importance of the functional sensitivity determination of a serum hyaluronic acid assay for the prediction of liver fibrosis in patients with features of the metabolic syndrome
- The dilemma of invasive and non-invasive investigations for adult and paediatric non-alcoholic fatty liver disease: has the time come for a new biochemical marker?
- Is cystatin C a reliable renal marker in trauma?
- On the independence of intraindividual reference values
- Sixth International Symposium on Molecular Diagnostics, Graz, Austria, May 25-27, 2006
