Document Type : Original Article (s)
Authors
1
PhD Student, Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
2
Associate Professor, Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
3
Professor, Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
Abstract
Background: Acoustic cavitation, which occurs at high intensities of ultrasound waves, can be fatal for tumor cells. On the other hand, the existence of nanoparticles in a liquid decreases the acoustic cavitation onset threshold. In this study, the combined effects of ultrasound and gold nanoparticles on breast carcinoma tumor model in BALB/c mice were studied.Methods: The tumor-bearing mice were divided into 4 groups of control, gold nanoparticles, ultrasound, and ultrasound in the presence of gold nanoparticles. Therapeutic effects on tumors were evaluated by measuring relative tumor volume, doubling time, and 5-folding time for tumor volume.Findings: The 5-folding time showed a significant difference between ultrasound in the presence of the gold nanoparticles and the other groups. The maximum doubling and 5-folding times were found in the ultrasound in the presence of gold nanoparticles group.Conclusion: Combined effects of ultrasound and gold nanoparticles can be used as a method for increasing the efficiency of the treatment of carcinoma tumors.
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