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Fabrication of Terazocin-Loaded Poly(D,L-lactide) Microspheres by an Ultrasonic Spray Drying Method and Their Release Behaviors

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Terazocin should be frequently administered for a long period time for the treatment of benign prostatic hyperplasia which is one of the most common diseases in elderly men. Controlled delivery of terazocin using polymer microspheres has a great potential to solve the problem. In this study, terazocin-incorporated poly(D, L-lactide) (PDLLA) microspheres were fabricated by a novel ultrasonic spray drying (USD) method, which is a rapid one-step process. The approximate diameters of microspheres were in a range of between 0.3 and 3 μm. SEM confirmed that the microspheres had a spherical shape and narrow size distribution. FT-IR spectroscopy demonstrated that the incorporated terazocin remained intact after the USD process. The microspheres showed a fast initial burst release of terazocin within nine hours, followed by a slow but steady release for 49 days, suggesting that these microspheres are highly promising for controlled drug delivery.
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Document Type: Research Article

Publication date: 01 October 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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