Abstract
To analyze the morphine rabbit myocardium with matrix-assisted laser desorption/ ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Six New Zealand white rabbits were randomly assigned to a control group (Group C) and a morphine group (Group M). Group C were pretreated with bolus injection of saline 1 mL/kg. Group M were pretreated with bolus injection of morphine 3 mg/kg. The myocardium tissue proteins of the rabbits 24 hours after the injection of morphine or saline preconditioned were extracted and separated by two dimensional gel electrophoresis(2-DE), and the images were analyzed and different proteins were found. Some of the different proteins were determined with MALDI-TOF-MS. There were 51 protein spots that displayed quantitative changes in expression (P < 0.05), 15 protein spots were chosen for MS analysis, and 8 proteins were preliminarily identified.They were aldose reductase, zinc finger protein 312, src related tyrosine kinase, carbonic anhydrase 12 precursor, electron transfer flavoprotein beta-subunit, glyceraldehyde-3-phosphate dehydrogenase, tumor necrosis factor ligand superfamily member 11 and transmembrane emp24 domain-containing protein. These proteins may be involved in the cardioprotection of morphine preconditioning.
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