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Antimicrobial Agents and Chemotherapy, April 2002, p. 1105-1107, Vol. 46, No. 4
0066-4804/02/$04.00+0 DOI: 10.1128/AAC.46.4.1105-1107.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Synergistic Activities of Macrolide Antibiotics against Pseudomonas aeruginosa, Burkholderia cepacia, Stenotrophomonas maltophilia, and Alcaligenes xylosoxidans Isolated from Patients with Cystic Fibrosis
Lisa Saiman,1* Yunhua Chen,1 Pablo San Gabriel,1 and Charles Knirsch2
Department of Pediatrics, Columbia University,1
Pfizer Pharmaceuticals, Inc., New York, New York2
Received 23 August 2001/
Returned for modification 23 October 2001/
Accepted 20 December 2001
Azithromycin and clarithromycin were paired with other antibiotics to test synergistic activity against 300 multidrug-resistant pathogens isolated from cystic fibrosis (CF) patients. Clarithromycin-tobramycin was most active against Pseudomonas aeruginosa and inhibited 58% of strains. Azithromycin-trimethoprim-sulfamethoxazole, azithromycin-ceftazidime, and azithromycin-doxycycline or azithromycin-trimethoprim-sulfamethoxazole inhibited 40, 20, and 22% of Stenotrophomonas maltophilia, Burkholderia cepacia complex, and Achromobacter (Alcaligenes) xylosoxidans strains, respectively.
* Corresponding author. Mailing address: Columbia University, 650 West 168th St., PH 4 West, Rm. 4-470, New York, NY 10032. Phone: (212) 305-9446. Fax: (212) 305-9491. E-mail:
LS5{at}columbia.edu.
Antimicrobial Agents and Chemotherapy, April 2002, p. 1105-1107, Vol. 46, No. 4
0066-4804/02/$04.00+0 DOI: 10.1128/AAC.46.4.1105-1107.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
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