Results 301 to 310 of about 45,210 (324)
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Aggregate formation of erythrocytes in postcapillary venules
American Journal of Physiology-Heart and Circulatory Physiology, 2005The purpose of the present study was to obtain information on erythrocyte aggregate formation in vivo. The movements of erythrocytes in postcapillary venules of the rat spinotrapezius muscle at various flow rates were recorded with a high-speed video camera before and after infusion of dextran 500. To distinguish aggregates, the following criteria were
Sangho Kim +3 more
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New aspects of erythrocyte aggregation
Clinical Hemorheology and Microcirculation, 1988We studied blood and plasma viscosity, hematocrit, erythrocyte aggregation index and plasma protein fractions in 26 healthy subjects. We found a significant positive linear correlation between hematocrit and blood viscosity at each of the considered shear rates (low shear range), and a significant negative linear correlation between hematocrit and ...
Roberto Agosti +5 more
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Albumin affects erythrocyte aggregation and sedimentation
European Journal of Clinical Investigation, 1995Abstract. Erythrocyte aggregation and sedimentation is determined by the concentration of high molecular plasma proteins such as fibrinogen and immuno‐globulins. The role of albumin, the most abundant plasma protein, is controversial. We analysed the influence of human albumin (0–80 gL‐1) on sedimentation behaviour of erythrocytes suspended ...
C. Nagy, Walter H. Reinhart
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Polymicroviscometry (PMV) and erythrocyte aggregation
Clinical Hemorheology and Microcirculation, 1989The process of red blood cell (RBC) aggregation is always associated with its counterpart: phase separation. The possibility of predicting the occurrence of a specific hemodynamic effect produced by these two processes in the living vasculature is frequently limited by insufficient information on the ...
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Effect of pH on the velocity of erythrocyte aggregation
Biorheology, 1988The effect of pH on the velocity of aggregation of human erythrocytes was quantitatively examined with a rheoscope combined with a video-camera, an image analyzer and a computer, in relation to the morphological changes of erythrocytes and their aggregates. (i) With increasing pH of the medium, the velocity of erythrocyte aggregation increased.
Takeshi Shiga +3 more
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Erythrocyte deformability and erythrocyte aggregation in preeclampsia.
Clinical hemorheology and microcirculation, 2001One of the features of preeclampsia is impaired blood rheology due to altered erythrocyte aggregation and erythrocyte deformability. We investigated these two parameters which affect the viscosity of blood, along with serum and intraerythrocytic magnesium concentrations, immunoglobulin titres and fibrinogen concentration in 12 preeclamptic women ...
D J, Pepple +3 more
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Erythrocyte aggregation during normal pregnancy
American Journal of Obstetrics and Gynecology, 1983Red blood cell aggregation induced by fibrinogen is a major determinant of the non-Newtonian flow behavior of blood and has been suggested as a possible contributing factor for thrombogenesis. Given the elevated fibrinogen levels and the incidence of thrombotic accidents in pregnancy, a study was designed to assess red blood cell aggregation at ...
Patrick Ozanne +3 more
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Animal species differences in erythrocyte aggregability
American Journal of Physiology-Heart and Circulatory Physiology, 1992Species differences in erythrocyte aggregability were investigated employing our whole blood erythrocyte aggregometer. Blood was sampled from seven species, including humans and anesthetized (30 mg/kg pentobarbital) animals. The erythrocyte aggregation rates were the following (in s-1): cats, 0.213 +/- 0.027 (means +/- SD); dogs, 0.164 +/- 0.027; men,
Ban Mihara +8 more
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Ultrasonic evaluation of erythrocyte aggregation dynamics
Biorheology, 1989The dynamics of aggregation and disaggregation of blood of varying hematocrit in oscillatory flow in a distensible horizontal tube was determined by measuring the developing echo intensity of the blood samples with a 10 MHz B-mode ultrasonic scanner. Early aggregation could be detected within 10 sec. of stoppage of flow.
Justin J +4 more
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Viscometric quantification of erythrocyte aggregation
Clinical Hemorheology and Microcirculation, 1989Linking between blood viscosity and erythrocyte aggregation is interpreted as resulting of structural changes of red blood cell aggregates and their clusters, in the absence of blood flow. Limits of applying such an interpretation is discussed with the help of few examples.
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