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Dry powdered aerosols of diatrizoic acid nanoparticle agglomerates as a lung contrast agent
El-Gendy, Nashwa Aillon, Kristin L. Berkland, Cory J.
El-Gendy, Nashwa
Aillon, Kristin L.
Berkland, Cory J.
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Abstract
Aerosolized contrast agents may improve the resolution of biomedical imaging modalities and enable more accurate diagnosis of lung diseases. Many iodinated compounds, such as diatrizoic acid, have been shown to be safe and useful for radiographic examination of the airways. Formulations of such compounds must be improved in order to allow imaging of the smallest airways. Here, diatrizoic acid nanoparticle agglomerates were created by assembling nanoparticles into inhalable microparticles that may augment deposition in the lung periphery. Nanoparticle agglomerates were fully characterized and safety was determined in vivo. After dry powder insufflation to rats, no acute alveolar tissue damage was observed 2 h post dose. Diatrizoic acid nanoparticle agglomerates possess the characteristics of an efficient and safe inhalable lung contrast agent.
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Date
2011-05-31
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Publisher
Elsevier
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Keywords
Diatrizoic acid, Contrast medium, Pulmonary delivery, Dry powder, Aerosols, CT imaging
Citation
El-Gendy, Nashwa, Kristin L. Aillon, and Cory Berkland. "Dry Powdered Aerosols of Diatrizoic Acid Nanoparticle Agglomerates as a Lung Contrast Agent." International Journal of Pharmaceutics 391.1-2 (2010): 305-12.