心血管内科知识库

In order to find candidate proteins that are potentially associated with the phenotype in neonatal rat car diomyocytes treated with phenylephrine(PE), the differential proteins expression pattern after a-adrenergic receptor stimulation in neonatal cardiomyocytes was analyzed by using a series of methods, including two dimensional polyacrylamide gel electrophoresis, PDQuest 2-DE software analysis and peptide mass fingerprint mapping based on MALDI-TOF-MS. The good two-dimensional pattern with a high resolution and reproducibility was obtained. Totally 14 differential protein spots were found. Put of these, 11 proteins were preliminarily identified. Desmin, Txndc5, etc. were found to be up-regulated in PE-treated cardiomyocytes, while caspase-11, 4-hydroxyphenylpyruvic acid dioxygenase, etc. were found to be down-regulated. It suggests that the differential expression analysis of proteome may be useful to the further study of the related proteins and the molecular markers of cardiovascular diseases.