Summary
Adhesion of platelets to several polymer surfaces and the release of serotonin from adherent platelets have been investigated. The platelets were washed, labelled with 51Cr and 14C-serotonin and suspended in media containing different concentrations of red cells, albumin and fibrinogen. The apparatus was a couette flow device operated under well-characterised flow and transport conditions. Adhesion and release were measured by counting radioactivity of both isotopes on the surface and comparing to aliquots of suspension of known platelet concentration. A factorial experimental design was used to obtain estimates of the effects of haematocrit, platelet count, fibrinogen concentration and albumin concentration on adhesion and release. This approach also allowed estimates of the effects of the different surfaces, independent of any of these ‘environmental’ factors. The surfaces studied formed a series of segmented poly-ether urethanes and glass. Adhesion was found to be strongly dependent on the surface properties and decreased with increasing hydrophilicity of the polyurethanes. Release was somewhat less dependent on surface properties but increased with increasing hydrophilicity. The most important environmental factors for adhesion were haematocrit and fibrinogen concentration, both of which caused an increase. For release, haematocrit and fibrinogen were also important. However, release was found to decrease as the levels of these factors increased. Thus, the effects of surface properties and environmental factors were found to be opposite for the adhesion and release response.
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References
Baumgartner, H. R., Muggli, R., Tschopp, T. B. and Turitto, V. T. (1976). Platelet adhesion, release and aggregation in flowing blood: effects of surface properties and platelet function. Thrombos. Diathes. Haemorrh., 35, 124.
Box, G. E. P. and Hunter, J. S. (1961). The 2k-P fractional factorial designs. Part I. Technometrics, 3, 310.
Brash, J. L., Fritzinger, B. K. and Bruck, S. D. (1973). Development of block copolyether-urethane intra-aortic balloons and other medical devices. J. Biomed. Mater. Res., 7, 313.
Brash, J. L., Brophy, J. M. and Feuerstein, I. A. (1976). Adhesion of platelets to artificial surfaces: effect of red cells. J. Biomed. Mater. Res., 10, 429.
Cazenave, J. P., Packham, M. A., Guccione, M. A. and Mustard, J. F. (1975). Inhibition of platelet adherence to damaged surface of rabbit aorta. J. Lab. Clin. Med., 86, 551.
Feuerstein, I. A., Brophy, J. M. and Brash, J. L. (1975). Platelet transport and adhesion to reconstituted collagen and artificial surfaces. Trans. Amer. Soc. Artif. Int. Organs, 21, 427.
Friedman, L. I., Liem, H., Grabowski, E. F., Leonard, E. F. and McCord, C. W. (1970). Inconsequentiality of surface properties for initial platelet adhesion. Trans. Amer. Soc. Artif. Int. Organs, 16, 63.
Goldomith, H. L. (1971). Red cell motions and wall interactions in tube flow. Fed. Proc., 26, 1578.
Mason, R. G., Read, M. S. and Brinkhous, K. M. (1971). Effect of fibrinogen concentration on platelet adhesion to glass. Proc. Soc. Exp. Biol. Med., 137, 680.
Mustard, J. F., Perry, D. W., Ardlie, N. G. and Packham, M. A. (1972). Preparation of suspensions of washed platelets from humans. Brit. J. Haemat., 22, 193.
Packham, M. A., Evans, G., Glynn, M. F. and Mustard, J. F. (1969). The effect of plasma proteins on the interaction of platelets with glass surfaces. J. Lab. Clin. Med., 73, 686.
Steiner, M. and Baldini, M. (1970). Subcellular distribution of 51 Cr and characterisation of its binding sites in human platelets. Blood, 35, 727.
Turitto, V. T., Benis, A. M. and Leonard, E. F. (1972). Platelet diffusion in flowing blood. Ind. Eng. Chem. Fundam., 11, 216.
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© 1977 Bioengineering Unit, University of Strathclyde
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Brash, J.L., Whicher, S.J. (1977). Interaction of Platelets with Surfaces: A Factorial Study of Adhesion and Associated Release of Serotonin. In: Kenedi, R.M., Courtney, J.M., Gaylor, J.D.S., Gilchrist, T., Gerard, S.M. (eds) Artificial Organs. Strathclyde Bioengineering Seminars. Palgrave, London. https://doi.org/10.1007/978-1-349-03458-1_30
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DOI: https://doi.org/10.1007/978-1-349-03458-1_30
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