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In Vitro Activities of Several Diaminomethylpyridopyrimidines against Mycobacterium avium Complex

Authors
Publisher
American Society for Microbiology
Publication Date
Source
PMC
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  • Design
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Abstract

Three recently synthesized dihydrofolate reductase (DHFR) inhibitors designated SoRI 8890, 8895, and 8897 were evaluated for their in vitro activities against 25 isolates of Mycobacterium avium complex. The MICs at which 50 and 90% of isolates were inhibited were 1 and 2, 4 and 8, and 4 and 8 μg/ml for SoRI 8890, 8895, and 8897, respectively. Although the addition of dapsone at 0.5 μg/ml did not significantly enhance the in vitro activities of these compounds, their activities alone were comparable to, if not better than, results seen with other DHFR inhibitors, such as pyrimethamine or WR99210.

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