Results 201 to 210 of about 130,984 (249)
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The rheology of red blood cell aggregates
Microvascular Research, 1970Abstract The aggregation and disaggregation of red blood cells is a critical variable in the rheology of blood in both physiologic and pathologic conditions. A direct visualizing viscometer (Rheoscope) was used to analyze the formation, dispersion, and flow behavior of aggregates under quantified flow conditions.
J, Goldstone +2 more
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Red blood cell aggregation in experimental sepsis
Journal of Laboratory and Clinical Medicine, 1997Red blood cell (RBC) aggregation was investigated in a rat model of sepsis with special emphasis on RBC-related factors. Sepsis was produced by cecal ligation/puncture, whereas another group had only laparotomy (sham operation); blood samples also were obtained from control, unoperated-on animals.
O K, Baskurt, A, Temiz, H J, Meiselman
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Light scattering by aggregated red blood cells
Applied Optics, 2002In low flow rates, red blood cells (RBCs) fasten together along their axis of symmetry and form a so-called rouleaux. The scattering of He-Ne laser light by a rouleau consisting of n (2 < or = n < or = 8) average-sized RBCs is investigated. The interaction problem is treated numerically by means of an advanced axisymmetric boundary element--fast ...
Stephanos V, Tsinopoulos +2 more
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Red blood cell aggregation and primary hyperlipoproteinemia
Thrombosis Research, 1993Erythrocyte aggregation (EA) was determined in a Myrenne aggregometer at stasis (EAMo) and low shear (EAM1) in 102 patients suffering from primary hyperlipoproteinemia (PHLP)-46 with familial hypercholesterolemia (FH); 28 with familial combined hyperlipemia (FCHL); 28 with primary hypertriglyceridemia (PHTG)-and in a control group (CG) of healthy ...
A, Vayá +3 more
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Morphology of small aggregates of red blood cells
Bioelectrochemistry, 2008Blood can be considered a two-phase liquid composed of plasma as well as cells and cell aggregates. The degree of cell aggregation is an important determinant of blood rheology: The size and shape of the aggregates affect blood viscosity. The microscopic mechanisms of red blood cell adhesion involve a complex interplay of electrostatic, van der Waals ...
S, Svetina, P, Ziherl
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Rheological aspects of red blood cell aggregation
Biorheology, 1990The rheological aspects of red blood cell aggregation include molecular phenomena, cell viscoelasticity, and bulk flow rheology. At the molecular level, rates at which bonds are formed and broken, the chemical energy liberation from bond formation, the elasticity of the cross-bridges and lateral mobility of cross-linking molecules must all be ...
R, Skalak, C, Zhu
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Heparin effect on red blood cell aggregation
Biorheology, 1994We studied the effect of relatively high dosages of heparin (25–150 U/ml) on some rheological parameters of donor blood. It was found that heparin increased the erythrocyte sedimentation rate (ESR) and low shear blood viscosity at all concentrations studied. The increase of these parameters indicates an elevation in RBC aggregation. In all samples with
M V, Kameneva +4 more
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Aggregation and disaggregation of red blood cells
Biorheology, 1984The aggregation of red blood cells may be analyzed as an interaction of an adhesive surface energy and the elastic stored energy which results from deformation of the cell. The adhesive surface energy is the work required to separate a unit adhered area and is the resultant of adhesive forces due to the bridging molecules that bind the cells together ...
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Simulation of Red Blood Cell Aggregation in Shear Flow
Biorheology, 1997A simulation model has been developed for red blood cell (RBC) aggregation in shear flow. It is based on a description of the collision rates of RBC, the probability of particles sticking together, and the breakage of aggregates by shear forces. The influence of shear rate, hematocrit, aggregate fractal dimension, and binding strength on aggregation ...
B, Lim, P A, Bascom, R S, Cobbold
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Study of Red Blood Cell Aggregation by Admittance Measurements
Biorheology, 1996A method based on dielectric properties of cellular suspensions was developed to study red blood cell (RBC) aggregability. The time-dependent current in a Couette-type viscometer was recorded after abrupt stoppage of shearing. Since the current reaches steady state 2 min after the end of shearing, the observed effects were quantified by the relative ...
A, Pribush, D, Meyerstein, N, Meyerstein
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