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Article type: Research Article
Authors: Rao, P. R. | Jones, S. | Sun, Z. | Hosmane, R. S. | Abugo, O. | Rifkind, J.
Affiliations: Department of Mechanical Engineering, University of Maryland Baltimore County, Baltimore, MD 21228 | Department of Chemistry & Biochemistry, University of Maryland Baltimore County, Baltimore, MD 21228 | Gerontology Research Center, National Institute on Aging, NIH, Baltimore, MD 21224
Abstract: We demonstrate that in vitro incubation of erythrocytes from normal human adults in a series of aspirin analogues of increasing lipophilicity leads to a correspondingly decreased resistance (apparent viscosity) to their flow in narrow capillaries. No particular trend was observed in mean cell volume and morphologic characteristics of the cells. These observations demonstrate that erythrocyte flow characteristics are affected even before any observable changes occur in morphologic and geometric characteristics. We suggest that other changes occur in the membrane constitution which lead to a decreased membrane elastic stiffness and shear viscosity. These changes are greater with more lipophilic salicylates, perhaps, because they are adsorbed to a greater degree in the lipid bilayer and they disrupt the constitution of the membrane to a greater extent.
Keywords: Erythrocytes, Deformability, Salicylates, Aspirin, Lipophilicity, Capillary Flow
DOI: 10.3233/CH-1995-15609
Journal: Clinical Hemorheology and Microcirculation, vol. 15, no. 6, pp. 877-887, 1995
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