Comparison of three commercially available ektacytometers with different shearing geometries

Oguz K. Baskurt, M. R. Hardeman, Mehmet Uyuklu, Pinar Ulker, Melike Cengiz, N. Németh, Sehyun Shin, Tamas Alexy, Herbert J. Meiselman

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

In December 2008, the International Society for Clinical Hemorheology organized a workshop to evaluate and compare three ektacytometer instruments for measuring deformability of red blood cells (RBC): LORCA (Laser-assisted Optical Rotational Cell Analyzer, RR Mechatronics, Hoorn, The Netherlands), Rheodyn SSD (Myrenne GmbH, Roetgen, Germany) and RheoScan-D (RheoMeditech, Seoul, Korea). Intra-assay reproducibility and biological variation were determined using normal RBC, and cells with reduced deformability (i.e., 0.001-0.02% glutaradehyde (GA), 48°C heat treatment) were employed as either the only RBC present or as a sub-population. Standardized difference values were used as measure of the power to detect differences between normal and treated cells. Salient results include: (1) All instruments had intra-assay variations below 5% for shear stress (SS)>1 Pa but a sharp increase was found for Rheodyn SSD and RheoScan-D at lower SS; (2) Biological variation was similar and markedly increased for SS

Original languageEnglish
Pages (from-to)251-264
Number of pages14
JournalBiorheology
Volume46
Issue number3
DOIs
Publication statusPublished - 2009

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Silver Sulfadiazine
Erythrocytes
Korea
Biological Assay
Netherlands
Germany
Lasers
Hot Temperature
Education
Population
Seoul

Keywords

  • Ektacytometry
  • Erythrocyte deformability

ASJC Scopus subject areas

  • Physiology (medical)
  • Physiology

Cite this

Baskurt, O. K., Hardeman, M. R., Uyuklu, M., Ulker, P., Cengiz, M., Németh, N., ... Meiselman, H. J. (2009). Comparison of three commercially available ektacytometers with different shearing geometries. Biorheology, 46(3), 251-264. https://doi.org/10.3233/BIR-2009-0536

Comparison of three commercially available ektacytometers with different shearing geometries. / Baskurt, Oguz K.; Hardeman, M. R.; Uyuklu, Mehmet; Ulker, Pinar; Cengiz, Melike; Németh, N.; Shin, Sehyun; Alexy, Tamas; Meiselman, Herbert J.

In: Biorheology, Vol. 46, No. 3, 2009, p. 251-264.

Research output: Contribution to journalArticle

Baskurt, OK, Hardeman, MR, Uyuklu, M, Ulker, P, Cengiz, M, Németh, N, Shin, S, Alexy, T & Meiselman, HJ 2009, 'Comparison of three commercially available ektacytometers with different shearing geometries', Biorheology, vol. 46, no. 3, pp. 251-264. https://doi.org/10.3233/BIR-2009-0536
Baskurt, Oguz K. ; Hardeman, M. R. ; Uyuklu, Mehmet ; Ulker, Pinar ; Cengiz, Melike ; Németh, N. ; Shin, Sehyun ; Alexy, Tamas ; Meiselman, Herbert J. / Comparison of three commercially available ektacytometers with different shearing geometries. In: Biorheology. 2009 ; Vol. 46, No. 3. pp. 251-264.
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