Abstract
In this study, we have investigated the isolation of serum amyloid P (SAP) and C-reactive protein (CRP) from rainbow trout. It has recently been found that SAP is deposited in atherosclerotic lesions or neurofibrillary tangles, which are related to aging process and Alzheimer's disease. Given the importance of CRP, the CRP level in blood is becoming recognized as a potential means of monitoring cardiovascular risk. These two proteins, members of the pentraxin family of oligomeric serum proteins, were isolated from rainbow trout using N-methacryloyl-phosphoserine (MA-pSer) immobilized poly (2-hydroxy ethylmethacrylate) (PHEMA) cryogels as a column material in a fast protein liquid chromatography system. The separation process was verified in two steps. First, SAP and CRP proteins were isolated together from serum sample of rainbow trout using MA-pSer/PHEMA cryogel columns. Second, SAP protein was separated chromatographically from CRP protein using the Ca(2+) ion immobilized PHEMA cryogel column. According to the data, a new and effective technique has been developed for the isolation of SAP and CRP proteins from a biological source, rainbow trout. Finally, purified SAP and CRP were loaded using sodium dodecyl sulfate-polyacrylamide gel and western blot analysis to investigate the purity of chromatographically isolated SAP and CRP compared with commertial SAP and CRP.
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