Collision frequency of erythrocytes in postcapillary venules
نویسندگان
چکیده
منابع مشابه
Aggregate formation of erythrocytes in postcapillary venules.
The 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 used: 1) a fixed distance (4 microm) betwe...
متن کاملContributions of collision rate and collision efficiency to erythrocyte aggregation in postcapillary venules at low flow rates.
Red blood cell aggregation at low flow rates increases venous vascular resistance, but the process of aggregate formation in these vessels is not well understood. We previously reported that aggregate formation in postcapillary venules of the rat spinotrapezius muscle mainly occurs in a middle region between 15 and 30 microm downstream from the entrance. In light of the findings in that study, ...
متن کاملLeukocyte dependence of platelet adhesion in postcapillary venules.
Reperfusion of ischemic tissues results in development of a proinflammatory, prothrombogenic phenotype, culminating in the recruitment of leukocytes and platelets within postcapillary venules. Recent studies have indicated an interdependence of platelet and leukocyte adhesion, suggesting that heterotypic blood cell interactions may account for postischemic platelet recruitment. The objectives o...
متن کاملPressure-induced leukocyte margination in lung postcapillary venules.
Although pressure elevation in lung postcapillary venules increases endothelial P-selectin expression, the extent to which P-selectin causes lung leukocyte margination remains controversial. To address this issue, we optically viewed postcapillary venules of the isolated blood-perfused rat lung by real-time fluorescence imaging. To determine leukocyte margination in single postcapillary venules...
متن کاملOxygen tension distribution in postcapillary venules in resting skeletal muscle.
We tested the hypothesis that blood flow is distributed among capillary networks in resting skeletal muscle in such a manner as to maintain uniform end-capillary PO2. Oxygen tension in venules draining two to five capillaries was obtained by using the phosphorescence decay methodology in rat spinotrapezius muscle. For 64 postcapillary venules among 18 networks in 10 animals, the mean PO2 was 30...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2006
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.20.4.a280