title: In vitro activities of several diaminomethylpyridopyrimidines against Mycobacterium avium complex.
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 microgram/ml for SoRI 8890, 8895, and 8897, respectively. Although the addition of dapsone at 0.5 microgram/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.
authors.affiliation: Department of Medicine, Veterans Affairs Medical Center, Syracuse, New York, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Shoen
authors.forename: O
authors.initials: O
authors.lastname: Choromanska
authors.forename: R C
authors.initials: RC
authors.lastname: Reynolds
authors.forename: J R
authors.initials: JR
authors.lastname: Piper
authors.forename: C A
authors.initials: CA
authors.lastname: Johnson
authors.forename: M H
authors.initials: MH
authors.lastname: Cynamon
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D015269:Mycobacterium avium Complex / Q000187:drug effects* / Q000302:isolation & purification; D011743:Pyrimidines / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D004791:Enzyme Inhibitors; D005493:Folic Acid Antagonists; D011743:Pyrimidines; C117209:SoRI 8895; C117208:SoRI 8890; C117210:SoRI 8897