Imipenem resistance among Acinetobacter baumannii: association with reduced expression of a 33–36 kDa outer membrane protein
Open Access
- 1 August 1996
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Antimicrobial Chemotherapy
- Vol. 38 (2) , 245-251
- https://doi.org/10.1093/jac/38.2.245
Abstract
The mechanism of imipenem resistance of two Acinetobacter baumannii isolates (A-1 and A-24) was characterized in this study. A spontaneous revertant (A-1 (rev)) derived from isolate A-1 showed susceptibility to imipenem. β-Lactamase hydrolysis studies showed no evidence of an imipenem hydrolyzing enzyme among A-1, A-24, A-1 (rev), or two other imipenem susceptible A. baumannii isolates. Outer membrane protein (OMP) analysis indicated decreased expression of a 33–36 kDa protein by isolates A-1 and A-24 when compared with A-1 (rev) and the other A. bawnannii isolates. In conclusion, decreased expression of a 33–36 kDa OMP is associated with imipenem resistance among A. buumannii.Keywords
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