van Ogtrop M L, Guiot H F, Mattie H, van Strijen E, Sekh B R, van Furth R
Department of Infectious Diseases, University Hospital, Leiden, The Netherlands.
Antimicrob Agents Chemother. 1991 May;35(5):983-5. doi: 10.1128/AAC.35.5.983.
Oral and parenteral administration of aztreonam and oral administration of tigemonam to conventional mice caused a decrease in the number of aerobic gram-negative rods in the feces. Oral treatment with high doses of aztreonam (greater than or equal to 25 mg/kg/day) and tigemonam (100 mg/kg/day) adversely influenced colonization resistance, whereas oral treatment with lower doses of the monobactams or parenteral treatment with aztreonam did not.