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Vol. 16. Issue 2.
Pages 142-145 (March - April 2012)
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Vol. 16. Issue 2.
Pages 142-145 (March - April 2012)
Open Access
Previous use of quinolones: A surrogate marker for first line anti-tuberculosis drugs resistance in HIV-infected patients?
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Caroline Deutschendorf, Luciano Z. Goldani
Corresponding author
lgoldani@ufrgs.br

Corresponding author at: Infectious Diseases Section, Hospital de Clínicas de Porto Alegre, Ramiro Barcelos 2350, Porto Alegre, RS, 90640-000, Brazil.
, Rodrigo Pires dos Santos
Infectious Diseases Section, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, RS, Brazil
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Abstract
Objectives

Drug resistant Mycobacterium tuberculosis causes much higher rates of treatment toxicity, failure or relapse, and mortality. We determined the drug resistant profile of Mycobacterium tuberculosis strains isolated from a population of HIV-infected patients in southern Brazil and studied the potential factors associated with resistance.

Methods

We conducted a retrospective cohort study to determine the resistance profile of Mycobacterium tuberculosis isolated from HIV-infected patients and factors that could be associated with resistance from 2000 to 2005.

Results

236 patients were included in the study. Resistance to at least one drug was observed in 32 (14.6%) isolates, and multi-drug resistance was observed in 4 (1.82%) isolates. On multivariate analysis, previous use of tuberculostatics and quinolones were related to any first-line drug resistance.

Conclusions

In our study, previous quinolone use was significantly associated to first-line anti-TB drugs resistance. Multi-drug-resistant tuberculosis (MDR-TB) is a major problem worldwide, and we believe quinolones should be used with caution in settings where TB is endemic.

Keywords:
Mycobacterium tuberculosis
HIV
Quinolones
Drug resistance
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