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The overall spectrum is similar to that of imipenem, although meropenem is more active against Enterobacteriaceae and less active against Gram-positive bacteria. Meropenem is effective against bacteria producing extended-spectrum β-lactamases but may be more susceptible to hydrolysis by metallo-β-lactamases produced by bacteria.
In general, carbapenem, a β-lactam antibiotic, targets cells by inhibiting transpeptidases (penicillin-binding proteins). This prevents synthesis of peptidoglycan, a necessary structural component, leading to cell lysis. Resistance to carbapenem among Enterobacteriaceae and other gram-negative bacteria can be acquired through several mechanisms.
Enterobacteriaceae is a large family of Gram-negative bacteria. It includes over 30 genera and more than 100 species. It includes over 30 genera and more than 100 species. Its classification above the level of family is still a subject of debate, but one classification places it in the order Enterobacterales of the class Gammaproteobacteria in ...
The activity of meropenem/vaborbactam against P. aeruginosa and A. baumannii was found to be similar to that of meropenem alone. In fact, in these species, meropenem resistance is largely mediated by mechanisms that are not antagonized by vaborbactam (e.g., outer-membrane impermeability, upregulation of efflux systems, and production of class B ...
Prevalence of carbapenem-resistant Enterobacteriaceae in paediatric intensive care units (Cairo, Egypt) was 24% and various genes of carbapenemases were detected in 80% of carbapenem-resistant Enterobacteriaceae with dominance of bla OXA-48. [38]
However, the bla NDM-1 gene produces NDM-1, which is a carbapenemase beta-lactamase - an enzyme that hydrolyzes and inactivates these carbapenem antibiotics. [ citation needed ] Carbapenemases are particularly dangerous resistance mechanisms, since they can inactivate a wide range of different antibiotics. [ 10 ]
The evolution of bacteria on a "Mega-Plate" petri dish A list of antibiotic resistant bacteria is provided below. These bacteria have shown antibiotic resistance (or antimicrobial resistance). Gram positive Clostridioides difficile Clostridioides difficile is a nosocomial pathogen that causes diarrheal disease worldwide. Diarrhea caused by C. difficile can be life-threatening. Infections are ...
In particular, they may be required to treat multiresistant organisms, [1] [2] such as carbapenem-resistant Enterobacteriaceae. [3] Some combinations are more likely to result in successful treatment of an infection. [1]