Effective control of tuberculosis (TB) currently requires the use of long and cumbersome chemotherapeutic regimens. In order to design effective regimens that can be administered intermittently (i.e. once-weekly or less often) by inhalation or intravenous injection, novel methods of sustained drug delivery need to be rigorously explored. Recent advances in polymeric matrix-like particulate systems can provide the foundation needed to significantly improve the delivery of antituberculosis drugs. This application proposes to first develop, micropartices encapsulating various combinations of first-line anti-TB drugs using the newly developed poly(ether-anhydride) polymer and to analyze their physicochemical properties. Following that, extensive pharmacokinetic (PK) studies will be conducted in mice to determine the optimal dosage and frequency of administration of the prepared drug-loaded microparticles. Microparticle design parameters will be optimized as indicated by PK analysis. In the final phase, the applicant will rigorously determine the efficacy of intermittent poly(ether-anhydride) microparticle-based combinations in a well-defined, highly prognostic murine model of active tuberculosis designed to mimic the treatment of human disease.

Agency
National Institute of Health (NIH)
Institute
National Institute of Biomedical Imaging and Bioengineering (NIBIB)
Type
Predoctoral Individual National Research Service Award (F31)
Project #
5F31EB005094-02
Application #
7064778
Study Section
Special Emphasis Panel (ZRG1-F04A (20))
Program Officer
Baird, Richard A
Project Start
2005-06-01
Project End
2007-01-31
Budget Start
2006-06-01
Budget End
2007-01-31
Support Year
2
Fiscal Year
2006
Total Cost
$23,284
Indirect Cost
Name
Johns Hopkins University
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
001910777
City
Baltimore
State
MD
Country
United States
Zip Code
21218
Rosenthal, Ian M; Zhang, Ming; Williams, Kathy N et al. (2007) Daily dosing of rifapentine cures tuberculosis in three months or less in the murine model. PLoS Med 4:e344
Rosenthal, Ian M; Williams, Kathy; Tyagi, Sandeep et al. (2006) Potent twice-weekly rifapentine-containing regimens in murine tuberculosis. Am J Respir Crit Care Med 174:94-101