Competitive adsorption of plasma proteins at solid—liquid interfaces

H.G.W. Lensen, W. Breemhaar, C.A. Smolders, J. Feijen

Research output: Contribution to journalArticleAcademic

11 Citations (Scopus)
150 Downloads (Pure)


The competitive adsorption of human serum albumin (HSA), human immuno-γ-globulin (HIgG) and human fibrinogen (HFb) onto polystyrene (PS) at 20° C and a pH of 7.35 (phosphate-buffered saline) was studied. Protein adsorption was studied using enzyme immunoassay. The results obtained with the immunoassay were compared with those obtained using radiolabelled proteins. Recent studies revealed that the adsorption behaviour of radiolabelled proteins onto surfaces differs from that of the non-labelled proteins, which may lead to misinterpretation of adsorption data. Differences in the adsorption behaviour of the labelled proteins as compared to non-labelled proteins can possibly be explained by the formation of modified proteins during the labelling procedure as shown by ion-exchange high-performance liquid chromatography (HPLC). The competitive adsorption of HSA, HIgG and HFb onto a PS latex was studied by measuring the depletion of proteins in solution. The decrease in protein concentration in solution was determined by HPLC techniques. A strong preferential adsorption of HFb was observed with maximum adsorption values of 0.6 μg/cm2.
Original languageEnglish
Pages (from-to)191-198
JournalJournal of chromatography. B: Analytical technologies in the biomedical and life sciences
Publication statusPublished - 1986


  • IR-69729


Dive into the research topics of 'Competitive adsorption of plasma proteins at solid—liquid interfaces'. Together they form a unique fingerprint.

Cite this