Original Article | Open Access
S Wong, LE Bryan, "Accumulation of Trospectomycin by Strains of Salmonella typhimurium, escherichia coli and Haemophilus influenzae", Canadian Journal of Infectious Diseases and Medical Microbiology, vol. 1, Article ID 258273, 6 pages, 1990. https://doi.org/10.1155/1990/258273
Accumulation of Trospectomycin by Strains of Salmonella typhimurium, escherichia coli and Haemophilus influenzae
Trospectomycin, unlike aminoglycosidic aminocyclitols, is accumulated by a nonsaturable, energy-independent, diffusional process in Salmonella typhimurium, Escherichia coli and Haemophilus influenzae. A deep rough mutant of S typhimurium was more susceptible and accumulated the drug faster, and F porin deficient mutants of E coli were more resistant than parental strains. Trospectomycin likely uses both porin and nonporin pathways to cross the outer membrane. An E coli strain effectively accumulated the drug anaerobically, explaining its anaerobic activity. An H influenzae strain accumulated trospectomycin at concentrations below those for which detectable uptake could be observed with E coli or S typhimurium strains, consistent with greater activity in Haemophilus species.
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