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Ofloxacin in multidrug resistant tuberculosis
P P Walwaikar1, V K Morye, A S Gawde
1JB Chemicals & Pharmaceuticals Limited, Mumbai 400025.
Abstract:
Tuberculosis (TB) is the leading infectious cause of death today and 3.81 million cases occurred in 1997 and 1998. Even today in spite of having four drugs like isoniazid, rifampicin, streptomycin/pyrazinamide and ethambutol for the intensive phase, the total duration of treatment remains six months. Because of the global health problems of TB, the increasing rate of multidrug resistant TB (MDR-TB) and the high rate of co-infection with HIV, the need for effective non-toxic antituberculous agents is essential. Fluoroquinolones have been classified as drugs having low bactericidal activity by the WHO. To date, they have been used for preventive therapy, empirical treatment of patients with TB and retreatment of patients with relapsing TB. In-vitro and in-vivo clinical studies have identified ofloxacin as a promising new agent in the treatment of MDR-TB. Ofloxacin has been advocated by the WHO in case of MDR-TB, when susceptibility to test results are not available before starting the new treatment, in the continuation period (18 months) and if resistance is proven to at least isoniazid and rifampicin.
Insights
Tuberculosis (TB) treatment requires new drugs due to rising multidrug-resistant TB (MDR-TB). Ofloxacin shows promise as an effective agent for treating MDR-TB, especially when standard treatments fail.
Area of Science:
- * Infectious Diseases
- * Pharmacology
- * Microbiology
Background:
- * Tuberculosis (TB) remains a leading infectious cause of death globally.
- * Current six-month treatment regimens face challenges from multidrug-resistant TB (MDR-TB) and HIV co-infection.
- * There is a critical need for novel, non-toxic antitubercular agents.
Purpose of the Study:
- * To evaluate ofloxacin as a potential agent for treating multidrug-resistant tuberculosis (MDR-TB).
- * To assess the efficacy of fluoroquinolones in the context of challenging TB treatment scenarios.
Main Methods:
- * Review of in-vitro and in-vivo clinical studies.
- * Analysis of World Health Organization (WHO) recommendations for MDR-TB treatment.
Main Results:
- * Ofloxacin has been identified as a promising agent in both laboratory and clinical settings for MDR-TB.
- * WHO advocates for ofloxacin in specific MDR-TB treatment situations, including empirical therapy and when resistance is confirmed.
Conclusions:
- * Ofloxacin represents a valuable therapeutic option for managing multidrug-resistant tuberculosis (MDR-TB).
- * Its use is particularly recommended when susceptibility results are pending or when resistance to first-line drugs is evident.
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