Effects of ultrasound on agglutination and aggregation of human erythrocytes in vitro.
A new experimental approach has shown that human erythrocytes of different blood groups were induced to form more agglutinates at a sound pressure of 70-240 kPa in vitro than the control erythrocytes. Similar effects were observed for alcian blue and dextran stimulated aggregation and for spontaneous aggregation. The increase of agglutination or aggregation was reversible. Heating and acoustic cavitation were shown not to be responsible for this effect. Bulk fluid movement produced by ultrasound irradiation appeared to cause the described phenomenon. Possible underlying mechanisms connecting the acoustic streaming and agglutination or aggregation behaviour of the cells are proposed.
Department of Medical Physics and Biophysics, Martin Luther University, Halle-Wittenberg, Germany.
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Pohl
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Rosenfeld
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Pohl
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Millner
D000423:Alcian Blue / Q000494:pharmacology; D000925:Anticoagulants / Q000494:pharmacology; D004396:Coloring Agents / Q000494:pharmacology; D003911:Dextrans / Q000494:pharmacology; D004903:Erythrocyte Aggregation; D004911:Erythrocyte Volume; D004912:Erythrocytes / Q000000981:diagnostic imaging* / Q000187:drug effects; D006384:Hemagglutination; D006801:Humans; D066298:In Vitro Techniques; D014463:Ultrasonography
D000925:Anticoagulants; D004396:Coloring Agents; D003911:Dextrans; D000423:Alcian Blue