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Multi-timescale Microscopy Methods for the Characterization of Fluorescently-labeled Microbubbles for Ultrasound-Triggered Drug Release
Published on: June 12, 2021
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Design of Microbubbles for Gene/Drug Delivery
Thierry Bettinger1, François Tranquart2
1Novel agents Department, Bracco Suisse SA, Plan-Les-Ouates, Switzerland. thierry.bettinger@bracco.com.
Advances in Experimental Medicine and Biology
|October 22, 2015
Summary
Ultrasound contrast agents (UCA) initially for diagnosis now offer targeted drug delivery with high spatial control. This technology enables precise drug release in specific regions, with potential applications in cardiovascular, neurological, and tumor therapies.
Area of Science:
- Biomedical Engineering
- Pharmacology
- Medical Imaging
Background:
- Ultrasound contrast agents (UCA) are transitioning from diagnostic to therapeutic roles.
- Ultrasound (US) offers precise spatial control for triggered drug delivery, minimizing off-target effects.
- UCA imaging aids in target localization and real-time monitoring of drug release.
Purpose of the Study:
- To explore the evolving therapeutic applications of ultrasound contrast agents.
- To highlight the advantages of ultrasound-triggered drug delivery systems.
- To discuss the formulation and regulatory considerations for clinical translation.
Main Methods:
- Review of current research on UCA formulation and preparation.
- Analysis of analytical methods for UCA characterization.
- Examination of preclinical data and clinical trial limitations.
Main Results:
- Promising preclinical results demonstrate the potential of UCA-mediated drug delivery.
- Key clinical indications include cardiovascular diseases, central nervous system disorders, and cancer therapy.
- Challenges remain in translating these findings to widespread clinical practice.
Conclusions:
- Ultrasound contrast agents and US technology present a promising platform for targeted drug and gene delivery.
- Further research into UCA formulation and rigorous regulatory pathways are crucial for clinical adoption.
- Successful translation requires addressing formulation, analytical, and regulatory hurdles.

