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Carbapenem-resistant Enterobacteriaceae (CRE) or carbapenemase-producing Enterobacteriaceae (CPE) are gram-negative bacteria that are resistant to the carbapenem class of antibiotics, considered the drugs of last resort for such infections.
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 ...
PZ-601 is a carbapenem antibiotic currently being tested as having a broad spectrum of activity including strains resistant to other carbapenems. Despite early Phase II promise, Novartis (who acquired PZ-601 in a merger deal with Protez Pharmaceuticals) recently dropped PZ-601, citing a high rate of adverse events in testing.
The carbapenems were developed to overcome antibiotic resistance mediated by bacterial beta-lactamase enzymes. 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]
The concern is that carbapenem is often used as a drug of last resort when battling resistant bacterial strains. New slight mutations could result in infections for which healthcare professionals can do very little, if anything, to treat patients with resistant organisms. A number of mechanisms cause carbapenem resistance in the Enterobacteriaceae.
Several Enterobacteriaceae strains have been isolated which are resistant to antibiotics including carbapenems, which are often claimed as "the last line of antibiotic defense" against resistant organisms. For instance, some Klebsiella pneumoniae strains are carbapenem resistant. [18]
Nacubactam is an investigational β-lactamase inhibitor being developed for the treatment of infections caused by carbapenem-resistant Enterobacteriaceae (CRE). It belongs to the diazabicyclooctane (DBO) class of compounds and exhibits a dual mechanism of action.
This means that individual antibiotics that used to be effective are no longer effective, [1] and because of the absence of new classes of antibiotic, they allow old antibiotics to be continue to be used. [2] In particular, they may be required to treat multiresistant organisms, [1] [2] such as carbapenem-resistant Enterobacteriaceae. [3]