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Updated: Feb 5, 2026
09:25
Assessment of Ultrasonic Vocalizations During Drug Self-administration in Rats
Published on: July 22, 2010
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Small volume method for drug release screening using ultrasonic agitation.
Andrew J Acevedo1, R Glynn Holt, Darash Desai
1Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA. zaman@bu.edu.
The Analyst
|September 8, 2018
Summary
This study introduces an affordable, small-volume method for drug release testing using ultrasonic agitation. The novel approach aids in screening dosage form quality and is beneficial for low-resource settings.
Area of Science:
- Pharmaceutical Sciences
- Chemical Engineering
- Materials Science
Background:
- Drug release testing is crucial for dosage form development and manufacturing.
- Official methods are resource-intensive and require specialized facilities, creating a need for accessible alternatives.
- Current methods for studying drug release behavior are lacking in affordability and accessibility.
Purpose of the Study:
- To develop a small-volume, accessible method for solid dissolution and drug release testing of solid dosage forms.
- To investigate the use of ultrasonic agitation for drug release studies.
- To characterize the acousto-hydrodynamic environment and its effect on drug release.
Main Methods:
- Utilized ultrasonic agitation (40 kHz) in a 50 mL vessel to generate cavitation and acoustic streaming.
- Employed Prednisone Performance Verification Tablets as model systems.
- Investigated system parameters' effects on drug release and the acousto-hydrodynamic environment using streak photography and hydrophone measurements.
Main Results:
- Ultrasonic agitation effectively induced drug release from tablet samples.
- Drug release exhibited a slow/fast threshold transition dependent on system parameters, primarily influenced by acoustic streaming.
- Acousto-hydrodynamic characterization correlated with drug release behavior.
Conclusions:
- The developed ultrasonic method offers a complementary screening approach to official drug release testing.
- Its small volume and accessibility make it suitable for low-dose/novel dosage forms and post-manufacturing quality screening, especially in low- and middle-income countries.
- This method enhances the accessibility and reduces the cost of drug release testing.
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