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Enhancement of DNA synthesis in neonatal mouse tibial epiphyses after exposure to therapeutic ultrasound

Enhancement of DNA synthesis in neonatal mouse tibial epiphyses after exposure to therapeutic... In vitro growth response of tibiae removed from newborn mice was monitored after treatment with ultrasound. Bones, in an acoustically uniform medium, were insonated with continuous‐wave ultrasound at a frequency of 1.0 MHz with an intensity of 1.8 W/cm2. Contralateral isolates were used as controls. Purely thermal effects were held to a minimum. A statistically insignificant increase in elongation was observed after three five‐minute exposures 24 hours apart. A similar response was also found for protein accumulation and radioactive proline incorporation into protein in the cartilaginous epiphyses. However, after three exposures of ultrasound the incorporation of radioactive thymidine into DNA was significantly stimulated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Clinical Ultrasound Wiley

Enhancement of DNA synthesis in neonatal mouse tibial epiphyses after exposure to therapeutic ultrasound

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References (19)

Publisher
Wiley
Copyright
Copyright © 1974 Wiley Periodicals, Inc., A Wiley Company
ISSN
0091-2751
eISSN
1097-0096
DOI
10.1002/jcu.1870020307
Publisher site
See Article on Publisher Site

Abstract

In vitro growth response of tibiae removed from newborn mice was monitored after treatment with ultrasound. Bones, in an acoustically uniform medium, were insonated with continuous‐wave ultrasound at a frequency of 1.0 MHz with an intensity of 1.8 W/cm2. Contralateral isolates were used as controls. Purely thermal effects were held to a minimum. A statistically insignificant increase in elongation was observed after three five‐minute exposures 24 hours apart. A similar response was also found for protein accumulation and radioactive proline incorporation into protein in the cartilaginous epiphyses. However, after three exposures of ultrasound the incorporation of radioactive thymidine into DNA was significantly stimulated.

Journal

Journal of Clinical UltrasoundWiley

Published: Sep 1, 1974

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