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Time lapse and microscopic examinations of insonated in vitro cells
M W Miller1, C C Church, V Ciaravino
1Department of Biophysics, School of Medicine and Dentistry, University of Rochester, New York 14642.
Abstract:
A fibroblast cell line (Balb/c 3T3) was sham/exposed to ultrasound (2.2 MHz resonant frequency, 35.4 W/cm2 SPTP, 3 microseconds pulse duration, 200 Hz prf) for 30 min and subsequently scored for cell motility and alterations in cell morphology. Cell motility was assessed by computerized tracking of cells. Cell morphology ("normal" or "abnormal") was determined blindly by three independent scorers. A positive control (1-4 Gy) yielded statistically significant alterations in cell motility and morphology; no such differences were observed for the ultrasound regimen. The results thus fail to confirm an earlier report by Liebeskind et al. (Brit. J. Cancer 45(Suppl. V):176-186; 1982) of ultrasound-induced alterations in cell motility and morphology.
Insights
This study found that ultrasound exposure did not alter fibroblast cell motility or morphology, failing to replicate previous findings. Further research is needed to understand ultrasound
Area of Science:
- Biophysics
- Cell Biology
- Ultrasound Technology
Background:
- Previous research suggested ultrasound may affect cell motility and morphology.
- There is a need to validate these findings using standardized methods.
Purpose of the Study:
- To investigate the effects of therapeutic ultrasound on fibroblast cell motility and morphology.
- To determine if ultrasound exposure causes significant changes in cell behavior.
Main Methods:
- Balb/c 3T3 fibroblasts were exposed to ultrasound (2.2 MHz) for 30 minutes.
- Cell motility was assessed using computerized tracking.
- Cell morphology was evaluated blindly by three independent scorers.
Main Results:
- Ultrasound exposure did not result in statistically significant alterations in cell motility.
- No significant changes in cell morphology were observed following ultrasound exposure.
- A positive control (1-4 Gy) demonstrated significant alterations, validating the assay.
Conclusions:
- The study failed to confirm previous reports of ultrasound-induced changes in cell motility and morphology.
- These findings suggest that therapeutic ultrasound, under the tested conditions, does not adversely affect fibroblast cell behavior.
- Further investigation is warranted to fully elucidate the biological effects of ultrasound on cells.