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Journal of Ultrasound in Medicine, Vol 11, Issue 8 413-417, Copyright © 1992 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Ultrasonically induced in vitro cell lysis: node-antinode interactions

Y. Doida, A. A. Brayman and M. W. Miller
Department of Biology, Shiga University of Medical Science, Japan.

An attempt was made to discriminate between two hypotheses (standing wave, bubble recycling) of the mechanism of ultrasonically induced cell lysis in a rotating tube. A tube containing an aqueous suspension of P-388 cells was moved back and forth (+/- 3 or +/- 7 mm) during insonation (1 MHz, 5 W/cm2, continuous wave, 5 min). Cell lysis (approximately 20%) occurred. As a positive control, some tubes were also partially or completely rotated during insonation; considerable cell lysis (approximately 60%) occurred. The results are interpreted to suggest that both hypotheses are simultaneously useful in explaining the observed effect of cell lysis in a rotating tube.




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Copyright © 1992 by the American Institute of Ultrasound in Medicine.