Comparative In Vitro Activity Profiles of Novel Bis-Indole Antibacterials against Gram-Positive and Gram-Negative Clinical Isolates

Author:

Butler Michelle M.1,Williams John D.1,Peet Norton P.1,Moir Donald T.1,Panchal Rekha G.2,Bavari Sina2,Shinabarger Dean L.3,Bowlin Terry L.1

Affiliation:

1. Microbiotix, Inc., Worcester, Massachusetts

2. United States Army Medical Research Institute of Infectious Diseases, Frederick, Maryland

3. Micromyx, Kalamazoo, Michigan

Abstract

ABSTRACT Antimicrobial susceptibilities of 233 Gram-positive and 180 Gram-negative strains to two novel bis-indoles were evaluated. Both compounds were potent inhibitors of Gram-positive bacteria, with MIC 90 values of 0.004 to 0.5 μg/ml. One bis-indole, MBX 1162, exhibited potent activity against all Gram-negative strains, with MIC 90 values of 0.12 to 4 μg/ml, even against high-level-resistant pathogens, and compared favorably to all comparator antibiotics. The bis-indole compounds show promise for the treatment of multidrug-resistant clinical pathogens.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

Reference8 articles.

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