Large Porous Particles for Pulmonary Drug Delivery

Author:

Edwards David A.12345,Hanes Justin12345,Caponetti Giovanni12345,Hrkach Jeffrey12345,Ben-Jebria Abdelaziz12345,Eskew Mary Lou12345,Mintzes Jeffrey12345,Deaver Daniel12345,Lotan Noah12345,Langer Robert12345

Affiliation:

1. D. A. Edwards, A. Ben-Jebria, J. Mintzes, Department of Chemical Engineering, Pennsylvania State University, 204 Fenske Laboratory, University Park, PA 16802, USA.

2. J. Hanes, J. Hrkach, R. Langer, Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

3. G. Caponetti, Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, and Department of Pharmacy, Universite di Parma, 43100 Parma, Italy.

4. M. L. Eskew, Environmental Resources Research Institute, Pennsylvania State University, Fenske Laboratory, University Park, PA 16802, USA.

5. D. Deaver, Department of Animal Science, Pennsylvania State University, 324 Henning Building, University Park, PA 16802, USA.

Abstract

A new type of inhalation aerosol, characterized by particles of small mass density and large size, permitted the highly efficient delivery of inhaled therapeutics into the systemic circulation. Particles with mass densities less than 0.4 gram per cubic centimeter and mean diameters exceeding 5 micrometers were inspired deep into the lungs and escaped the lungs' natural clearance mechanisms until the inhaled particles delivered their therapeutic payload. Inhalation of large porous insulin particles resulted in elevated systemic levels of insulin and suppressed systemic glucose levels for 96 hours, whereas small nonporous insulin particles had this effect for only 4 hours. High systemic bioavailability of testosterone was also achieved by inhalation delivery of porous particles with a mean diameter (20 micrometers) approximately 10 times that of conventional inhaled therapeutic particles.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference39 articles.

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3. S. J. Smith and J. A. Bernstein in Inhalation Aerosols A. J. Hickey Ed. (Dekker New York 1996) pp. 233–269.

4. J. S. Patton and R. M. Platz Adv. Drug Delivery Rev. 8 179 (1992).

5. I. Gonda in Topics in Pharmaceutical Sciences 1991 D. J. A. Crommelin and K. K. Midha Eds. (Medpharm Scientific Stuttgart 1992) pp. 95–115.

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