Which enzyme is commonly produced by Enterobacteriaceae that contributes to antibiotic resistance?

Which enzyme is commonly produced by Enterobacteriaceae that contributes to antibiotic resistance?

• A. Aminoglycoside-modifying enzymes
• B. Extended-spectrum beta-lactamases
• C. Carbapenemases
• D. Beta-lactamases

Answer: (B)

The correct answer highlights the role of extended-spectrum beta-lactamases (ESBLs) in antibiotic resistance within the Enterobacteriaceae family. ESBLs are enzymes that can hydrolyze a wide range of beta-lactam antibiotics, including penicillins and cephalosporins, thereby providing these bacteria with a significant survival advantage in the presence of such antimicrobial agents. Their production is a key mechanism by which Enterobacteriaceae acquire resistance to commonly used antibiotics, leading to treatment failures and increased clinical challenges. Understanding the mechanism of ESBLs is critical for both antimicrobial stewardship and infection control measures, as infections caused by ESBL-producing strains require alternative treatment approaches that may be limited in efficacy or more toxic. This highlights the importance of recognizing the presence of ESBLs in clinical isolates and the need for diligent testing in laboratory settings. Other enzymes, while also contributing to resistance, specifically target different classes of antibiotics, making ESBLs particularly notable within the context of beta-lactam antibiotic resistance in Enterobacteriaceae.

The correct answer highlights the role of extended-spectrum beta-lactamases (ESBLs) in antibiotic resistance within the Enterobacteriaceae family. ESBLs are enzymes that can hydrolyze a wide range of beta-lactam antibiotics, including penicillins and cephalosporins, thereby providing these bacteria with a significant survival advantage in the presence of such antimicrobial agents. Their production is a key mechanism by which Enterobacteriaceae acquire resistance to commonly used antibiotics, leading to treatment failures and increased clinical challenges.

Understanding the mechanism of ESBLs is critical for both antimicrobial stewardship and infection control measures, as infections caused by ESBL-producing strains require alternative treatment approaches that may be limited in efficacy or more toxic. This highlights the importance of recognizing the presence of ESBLs in clinical isolates and the need for diligent testing in laboratory settings.

Other enzymes, while also contributing to resistance, specifically target different classes of antibiotics, making ESBLs particularly notable within the context of beta-lactam antibiotic resistance in Enterobacteriaceae.