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Antimicrobial Agents and Chemotherapy, November 2007, p. 4202-4204, Vol. 51, No. 11
0066-4804/07/$08.00+0     doi:10.1128/AAC.00181-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

In Vitro Antimycobacterial Spectrum of a Diarylquinoline ATP Synthase Inhibitor{triangledown}

Emma Huitric,1,2* Peter Verhasselt,3 Koen Andries,4 and Sven E. Hoffner1,2

Swedish Institute for Infectious Disease Control, Solna, Sweden,1 Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden,2 Johnson & Johnson Pharmaceutical Research and Development, Beerse, Belgium,3 Tibotec N.V., Beerse, Belgium4

Received 7 February 2007/ Returned for modification 11 June 2007/ Accepted 13 August 2007

The diarylquinoline R207910 is in clinical development for tuberculosis treatment. The MIC50 for 41 drug-susceptible and 44 multidrug-resistant Mycobacterium tuberculosis clinical isolates was 0.032 µg/ml. Out of 20 additional mycobacterial species, three were found to be naturally resistant to R207910 and were shown to exhibit a polymorphism in their atpE genes.

* Corresponding author. Mailing address: Swedish Institute for Infectious Disease Control, Department of Bacteriology, S-171 82 Solna, Sweden. Phone: 46 8 4572473. Fax: 46 8 301797. E-mail: emma.huitric{at}smi.ki.se

{triangledown} Published ahead of print on 20 August 2007.

Antimicrobial Agents and Chemotherapy, November 2007, p. 4202-4204, Vol. 51, No. 11
0066-4804/07/$08.00+0     doi:10.1128/AAC.00181-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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