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Updated: Sep 27, 2026

Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection
Published on: October 25, 2013
Cellular and molecular aspects of drugs of the future: meropenem
1Department of Internal Medicine, Inselspital Bern, Bern, Switzerland. pcottagn@insel.ch
Abstract:
Meropenem, first synthesized in the late eighties, has become one of the most important beta-lactam antibiotics of the carbapenem subclass used for the treatment of a variety of life-threatening infections. Due to its unique chemical structure, meropenem is not inactivated by the kidney dehydropeptidase I and the majority of microbial beta-lactamases. Its antimicrobial activity is based on its high affinity for the majority of cell wall-synthesizing enzymes, the so-called penicillin-binding proteins, of Gram-positive and -negative bacteria. However, bacteria have evolved several approaches to resist meropenem: (i) by reducing the affinity of the penicillin-binding proteins for the antibiotics, (ii) by decreasing the permeability of the outer membrane of Gram-negative bacteria, (iii) by using efflux pumps, and (iv) by activating zinc-dependent carbapenemases. Meropenem has a low toxicity profile and, in contrast to imipenem, no central nervous system toxicity.
Insights
Meropenem is a crucial carbapenem antibiotic effective against severe infections. It overcomes common bacterial resistance mechanisms and offers a favorable safety profile, unlike imipenem.
Area of Science:
- Pharmacology
- Microbiology
- Infectious Diseases
Background:
- Meropenem is a key beta-lactam antibiotic from the carbapenem subclass.
- It is vital for treating severe, life-threatening bacterial infections.
- Its chemical structure confers stability against kidney dehydropeptidase I and most beta-lactamases.
Purpose of the Study:
- To review the properties, mechanism of action, and resistance patterns of meropenem.
- To highlight its clinical significance in combating resistant bacterial infections.
- To compare its safety profile with other carbapenems like imipenem.
Main Methods:
- Review of existing literature on meropenem's synthesis and properties.
- Analysis of meropenem's interaction with bacterial targets (penicillin-binding proteins).
- Examination of documented bacterial resistance mechanisms against carbapenems.
Main Results:
- Meropenem exhibits broad-spectrum activity against Gram-positive and Gram-negative bacteria.
- Key resistance mechanisms include altered penicillin-binding proteins, reduced permeability, efflux pumps, and carbapenemases.
- Meropenem demonstrates a low toxicity profile, notably lacking the central nervous system toxicity associated with imipenem.
Conclusions:
- Meropenem remains a critical therapeutic option for serious infections due to its efficacy and stability.
- Understanding bacterial resistance is essential for optimizing meropenem's clinical use.
- Its favorable safety profile makes it a preferred choice in many clinical settings.
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