ArticleBMC research notes2025
Profile of outer membrane proteins of carbapenem-resistant Gram-negative bacilli in Ghana.
Article in BMC research notes, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Whole-genome sequencing reveals high-risk ESBL and carbapenemase-producing Enterobacterales on maternity ward surfaces in Cameroon.Scientific reports · 2026Article
- Variations in carbapenem resistance associated with the VIM-1 metallo-β-lactamase across theMicrobiology (Reading, England) · 2026Article
- Article
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Authors and funding
3 authors.
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Abstract
objectiveCarbapenem resistance is a major global health threat, but insights on its molecular determinants are scanty in sub-Saharan Africa, the predominant global antimicrobial resistance hotspot. This study aimed to profile outer membrane proteins (OMPs) of 111 carbapenem-resistant Gram-negative bacteria recovered from a broad spectrum of clinical specimens from Ghana.
resultsThe OMPs of Pseudomonas aeruginosa produced decreased amounts of OprD or the porin was completely lost, except in 5.9% (n = 3) of the isolates which had high-level porins. For Acinetobacter baumannii, 96.8% (n = 30) expressed loss of OprF. One carbapenemase non-PCR-positive isolate with high-level porin expression was observed. In A. baumannii, the major and significant band on SDS-PAGE was ~ 35 kDa. There were substantial numbers of unrelated porin expression among the isolates. Particularly, OmpC/F or OmpK35/37 expression was deficient. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis for Escherichia coli, Klebsiella aerogenes, Klebsiella pneumoniae, and other Enterobacterales had OmpC and OmpF absent or markedly reduced compared to the control strains. Overall, porin loss was a major mechanism underlying carbapenem resistance among the isolates, suggesting that in carbapenem-resistant organisms that seem to lack known carbapenem resistance genes, porin loss may be the underlying carbapenem resistance mechanism.
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