Ultrasound-Induced Calcium Oscillations and Waves in Chinese Hamster Ovary Cells in the Presence of Microbubbles
dc.contributor.author | Kumon, Ronald E. | |
dc.contributor.author | Aehle, M. | |
dc.contributor.author | Sabens, D. | |
dc.contributor.author | Parikh, P. | |
dc.contributor.author | Kourennyi, D. | |
dc.contributor.author | Deng, Cheri X. | |
dc.date.accessioned | 2011-06-01T16:09:04Z | |
dc.date.available | 2011-06-01T16:09:04Z | |
dc.date.issued | 2007-09-15 | |
dc.identifier.citation | Biophysical Journal, vol. 93, no. 6, 2007, pp. L29-L31 <http://hdl.handle.net/2027.42/84354> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/84354 | |
dc.description.abstract | This study investigated the effects of ultrasound on the intracellular [Ca2+] of Chinese hamster ovary cells in the presence of albumin-encapsulated Optison microbubbles. Cells were exposed to 1 MHz ultrasound (tone burst of 0.2 s duration, 0.45 MPa peak pressure) while immersed in solution of 0.9 mM Ca2+. Calcium imaging of the cells was performed using digital video fluorescence microscopy and Ca2+-indicator dye fura-2AM. Experimental evidence indicated that ultrasound caused a direct microbubble-cell interaction resulting in the breaking and eventual dissolution of the microbubble and concomitant permeabilization of the cells to Ca2+. These cells exhibited a large influx of Ca2+ over 3–4 s and did not return to their equilibrium levels. Subsequently, some cells exhibited one or more Ca2+ oscillations with the onset of oscillations delayed by 10–80 s after the ultrasound pulse. A variety of oscillations were observed including decaying oscillations returning to the baseline value over 35– 100 s, oscillations superimposed on a more gradual recovery over 150–200 s, and oscillations continued with increased amplitude caused by a second ultrasound tone burst. The delays in onset appeared to result from calcium waves that propagated across the cells after the application of the ultrasound pulse. | en_US |
dc.description.sponsorship | NIH grant R01CA116592 | en_US |
dc.description.sponsorship | American Cancer Society Institutional Research Grant to Case Western Reserve University | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Biophysical Society | en_US |
dc.subject | Ultrasound | en_US |
dc.subject | Calcium Waves | en_US |
dc.subject | Microbubbles | en_US |
dc.subject | Sonoporation | en_US |
dc.subject | Calcium Imaging | en_US |
dc.subject | Calcium Oscillations | en_US |
dc.subject | Optison | en_US |
dc.title | Ultrasound-Induced Calcium Oscillations and Waves in Chinese Hamster Ovary Cells in the Presence of Microbubbles | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Biomedical Engineering | |
dc.subject.hlbtoplevel | Engineering | |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Biomedical Engineering, Department of | en_US |
dc.contributor.affiliationother | Case Western Reserve University | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/84354/1/L29.pdf | |
dc.identifier.doi | 10.1529/biophysj.107.113365 | |
dc.identifier.source | Biophysical Journal | en_US |
dc.owningcollname | Biomedical Engineering, Department of |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.