| Serum S100 beta Protein as a Marker of Cerebral Damage during Cardiopulmonary Bypass. |
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Jun Young Kim, Taek Min Kwon, Jun Heum Yon, Kye Min Kim, Youn Suk Lee, Ki Hyuk Hong |
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Department of Anesthesiology and Pain Medicine, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea. Hong@sanggyepaik.or.kr |
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| Abstract |
BACKGROUND
S100 beta protein has been reported to be an early marker of brain injury. It is released from the glial cell and Schwann cell specifically after brain injury, and it,s serum concentration correlates with the severity of injury. The aim of this study was to measure the serum concentration of S100 beta protein during cardiac surgery and to reveal the correlation between cerebral oxygenation and S100 beta protein.
METHODS
Eighteen patients undergoing cardiac surgery using cardiopulmonary bypass (CPB) were enrolled in this study.
After induction of general anesthesia, the arterial-jugular venous oxygen difference (AjDO2), regional cerebral oxygen saturation (rSO2) and lactate oxygen index (LOI) were measured. They were measured after induction (T0), during CPB (T1) and at the end of CPB (T2). Serum S100beta protein was measured at T0, T2, T3 (5 hours after CPB), and T4 (24 hours after CPB) using an immunoluminometric assay. We observed correlations between rSO2, AjDO2, LOI and the S100beta protein concentration.
RESULTS
Serum concentrations of S100 beta protein were 0.18 +/- 0.20, 5.72 +/- 4.25, 1.06 +/- 1.38 and 0.58 +/- 0.44 (micro gram/L) at T0, T2, T3 and T4 respectively (normal value CONCLUSIONS
Our results show that serum concentrations of S100beta protein correlates with the duration of CPB and rSO2 during CPB. S100 beta protein can be considered an early marker of cerebral injury after CPB, but further studies are needed for it's correlation with severity of injury. |
| Key Words:
Brain injury; cardiopulmonary bypass; S100beta protein |
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