Journal of Biorheology

, Volume 23, Issue 1, pp 29–34 | Cite as

Motion of polymerized albumin particles in a model arteriole in the presence of red blood cells

  • Tetsuya Tsuji
  • Shinji Takeoka
  • Yosuke Okamura
  • Ryo Sudo
  • Yasuo Ikeda
  • Kazuo Tanishita
Original Article


Polymerized albumin particles (poly Alb) with recombinant glycoprotein Ibα (rGPIbα-poly Alb) are a promising candidate for a platelet substitute. Thus, we focused on the lateral motion of poly Alb in the presence of red blood cells, because the lateral motion plays an important role in aggregate formation. We visualized the microscopic motion of poly Alb toward the immobilized ligand (von Willebrand factor, VWF) surface in a model arteriole with red blood cells with a high-speed camera. At a higher shear rate of 1,500 s−1, the concentration profile of poly Alb appeared to peak near the wall. This profile enhances the interaction between the particles and wall. Particularly the migration angle, being the angle of the poly Alb velocity vector, was enlarged near the wall and contributed to transfer of poly Alb toward the immobilized VWF surface. This tendency is desirable to achieve the adhesion of particles on the wall.


Platelet substitute Von Willebrand factor Polymerized albumin particles Lateral motion 



This work was supported by Health Science Research Grants (Artificial Platelets), Research on Advanced Medical Technology, Ministry of Health and Welfare, Japan.


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Copyright information

© Japanese Society of Biorheology 2009

Authors and Affiliations

  • Tetsuya Tsuji
    • 1
  • Shinji Takeoka
    • 2
  • Yosuke Okamura
    • 2
  • Ryo Sudo
    • 3
  • Yasuo Ikeda
    • 4
  • Kazuo Tanishita
    • 1
  1. 1.Department of System Design EngineeringKeio UniversityYokohamaJapan
  2. 2.Department of Polymer ChemistryWaseda UniversityTokyoJapan
  3. 3.Department of Biological EngineeringMITCambridgeUSA
  4. 4.School of MedicineKeio UniversityTokyoJapan

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