Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid.

Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. Research Abstract Details 

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Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. Abstract Text:

I Escribano,J C ,B Llorca,E ,M Ruiz,G Royo,I Escribano,J C ,B Llorca,E ,M Ruiz,G Royo,

OBJECTIVE: Our aim was to study the influence of efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. METHODS: We studied the mutations in gyrA and gyrB genes and the influence of efflux pump systems with 2 inhibitors (reserpine and MC 207.110). RESULTS: The effect of the active efflux system on the decrease in sensitivity to ciprofloxacin, moxifloxacin, levofloxacin, ofloxacin, gatifloxacin and linezolid was studied by investigating the variation in the in vitro activity of these compounds when assayed in association with reserpine and MC 207.110. These inhibitors exhibit activity both in strains that are resistant and in strains that are susceptible to these antibiotics. However, they are seen to be most active in resistant strains, since the minimum inhibitory concentration of the antibiotics studied in these strains was reduced between 2- and 6-fold. CONCLUSIONS: Therefore, these mechanisms are involved in the resistance to both compounds. It would be of interest to carry out further studies to determine to what extent these active efflux systems influence resistance to the different groups of drugs used in the treatment of tuberculosis, with a view to the possibility of using the inhibitors of these systems in future therapeutic applications.

Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. Publishing Authors By Initials

I Escribano,JC ,B Llorca,E ,M Ruiz,G Royo,I Escribano,JC ,B Llorca,E ,M Ruiz,G Royo,

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Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Chemotherapy

VOLUME: 53

Page Numbers: 397-401

Journal Abbreviation:

ISSN: 1421-9794

DAY: 12

MONTH: 10

YEAR: 2007

Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Importance of the efflux pump systems in the resistance of Mycobacterium tuberculosis to fluoroquinolones and linezolid.

AFFILIATION: Section of Microbiology, Hospital General Universitario de Elche, Universidad Miguel Hernández, Elche, Spain.

Country: Switzerland

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MEDLINETA: Chemotherapy

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