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ISSN: 2574 -1241
ISSN: 2574 -1241
Received: July 24, 2018; Published: July 31, 2018
DOI: 10.26717/BJSTR.2018.07.001512
Controlled drug delivery systems such as the stimulation-based biomaterial scaffolds for sequestration and release of drugs offer safety and regulated therapeutic approach. In this study, the drug: para-aminobenzoic acid (PABA) was absorbed into a crosslinked chitosan and poly(caprolactone) (PCL) hydrogel and its release kinetics quantified under different conditions. It was experimentally-observed that the higher the pH (or the more basic the pH), the slower the PABA saturation release trended over time. At the acidic environment of pH 4, PABA was released the fastest, and enhanced by the degradation of chitosan-PCL gel. When a constant electric current of 0.6 mA as applied, PABA release was induced at pH 10. However, at pH 7, PABA was stably-bound to the chitosan-PCL matrix, with or without the external current. The selective sequestration of PABA at basic pH and its stimulated release via electric current application can be further explored for clinical translatability.
Keywords: Drug Delivery; Chitosan; PCL; Biomaterial Scaffolds; PABA; Electrical Stimulation; Electrostatic Interaction
Abbreviations: DDS: Drug Delivery Systems; PCL: Poly(Caprolactone); PABA: Para-Aminobenzoic Acid; DCC: N,N’-Dicyclohexylcarbodiimide; DBTDL: Dibutyltin Dilaurate; DMACA: 4-(Diethylamino)Cinnamaldehyde; MOPS: 4-Morpholinepropanesulfonic Acid
Abstract | Introduction | Materials and Methods | Results | Discussion | Conclusion | Acknowledgement | References |
International Association of Landscape Archaeology, Czech Glass Society, Czech Republic
Department of Chemistry, Semenov Institute of Chemical Physics, USSR Academy of Sciences, Moscow, Russia
Pharmaco-kinetics, dynamics and Drug Metabolism, Touro College of Pharmacy, USA
Professor of Nuclear Medicine, Faculty of Medicine and Surgery, University of Milan, Milan, Italy
Associate Professor at Department of Breast and Thyorid Surgey, Chongqing General Hospital, China
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