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Controlled-release approaches towards the chemotherapy of tuberculosis

Authors Saifullah B, Hussein MZ, Hussein Al Ali SH

Received 14 June 2012

Accepted for publication 25 July 2012

Published 12 October 2012 Volume 2012:7 Pages 5451—5463

DOI https://doi.org/10.2147/IJN.S34996

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Bullo Saifullah,1 Mohd Zobir B Hussein,1,2 Samer Hasan Hussein Al Ali1

1Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia; 2Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia

Abstract: Tuberculosis (TB), caused by the bacteria Mycobacterium tuberculosis, is notorious for its lethality to humans. Despite technological advances, the tubercle bacillus continues to threaten humans. According to the World Health Organization's 2011 global report on TB, 8.8 million cases of TB were reported in 2010, with a loss of 1.7 million human lives. As drug-susceptible TB requires long-term treatment of between 6 and 9 months, patient noncompliance remains the most important reason for treatment failure. For multidrug-resistant TB, patients must take second-line anti-TB drugs for 18–24 months and many adverse effects are associated with these drugs. Drug-delivery systems (DDSs) seem to be the most promising option for advancement in the treatment of TB. DDSs reduce the adverse effects of drugs and their dosing frequency as well as shorten the treatment period, and hence improve patient compliance. Further advantages of these systems are that they target the disease area, release the drugs in a sustained manner, and are biocompatible. In addition, targeted delivery systems may be useful in dealing with extensively drug-resistant TB because many side effects are associated with the drugs used to cure the disease. In this paper, we discuss the DDSs developed for the targeted and slow delivery of anti-TB drugs and their possible advantages and disadvantages.

Keywords: Mycobacterium tuberculosis, drug-delivery system, targeted delivery, anti-TB drug, TB, patient compliance

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