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Near-Infrared-Actuated Devices for Remotely Controlled Drug Delivery

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Proceedings of the National Academy of Sciences of the United States of America

Source : Proceedings of the National Academy of Sciences of the United States of America, Volume 111, Number 4, p.1349-1354 (2014)

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Keywords : animal experiment, animal model, animal tissue, Animals, article, continuous wave laser, controlled study, copolymer, cytotoxicity, diabetes, diabetes mellitus, drug delivery system, Drug Delivery Systems, drug implant, Electron, Equipment Design, ethylcellulose, excitation, Glucose, glucose blood level, glycemic control, Gold, gold nanoparticle, Infrared Rays, insulin aspart, Irradiation, laser, membrane permeability, microscopy, nanocomposite, Nanocomposites, nanoshell, near infrared laser, nonhuman, poly(n-isopropylacrylamide), povidone, priority journal, rat, Rats, Reproducibility of Results, Sprague-Dawley, sustained drug release, tissue reaction, Transmission

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2014

Abstract : A reservoir that could be remotely triggered to release a drug would enable the patient or physician to achieve on-demand, reproducible, repeated, and tunable dosing. Such a device would allow precise adjustment of dosage to desired effect, with a consequent minimization of toxicity, and could obviate repeated drug administrations or device implantations, enhancing patient compliance. It should exhibit low off-state leakage to minimize basal effects, and tunable on-state release profiles that could be adjusted from pulsatile to sustained in real time. Despite the clear clinical need for a device that meets these criteria, none has been reported to date to our knowledge. To address this deficiency, we developed an implantable reservoir capped by a nanocomposite membrane whose permeability was modulated by irradiation with a near-infrared laser. Irradiated devices could exhibit sustained onstate drug release for at least 3 h, and could reproducibly deliver short pulses over at least 10 cycles, with an on/off ratio of 30. Devices containing aspart, a fast-acting insulin analog, could achieve glycemic control after s.c. Implantation in diabetic rats, with reproducible dosing controlled by the intensity and timing of irradiation over a 2-wk period. These devices can be loaded with a wide range of drug types, and therefore represent a platform technology that might be used to address a wide variety of clinical indications.

Cite this Research Publication : B. P. Timko, Arruebo, Md, Dr. Sahadev Shankarappa, McAlvin, J. B., Okonkwo, O. S., Mizrahi, B., Stefanescu, C. F., Gomez, L., Zhu, J., Zhu, A., Santamaria, J., Langer, R., and Kohane, D. S., “Near-Infrared-Actuated Devices for Remotely Controlled Drug Delivery”, Proceedings of the National Academy of Sciences of the United States of America, vol. 111, pp. 1349-1354, 2014.

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