Which enzyme do some Enterobacteriaceae produce that contributes to antibiotic resistance?

Which enzyme do some Enterobacteriaceae produce that contributes to antibiotic resistance?

• A. Beta-lactamases.
• B. Extended-spectrum beta-lactamases (ESBLs).
• C. Aminoglycosides.
• D. Cephalosporinases.

Answer: (B)

Extended-spectrum beta-lactamases (ESBLs) are enzymes produced by certain Enterobacteriaceae that confer resistance to a broad range of beta-lactam antibiotics, including penicillins and cephalosporins. These enzymes work by hydrolyzing the beta-lactam ring, rendering the antibiotics ineffective. The production of ESBLs is particularly concerning in clinical settings, as it limits treatment options and can lead to treatment failures in infections caused by ESBL-producing strains. ESBLs are typically associated with infections caused by organisms such as Escherichia coli and Klebsiella pneumoniae. The ability to produce these enzymes is often linked to plasmids, which can be easily transferred between bacteria, further spreading antibiotic resistance within bacterial populations. This resistance mechanism has led to significant public health challenges, prompting the need for careful antibiotic stewardship and infection control measures. While other types of beta-lactamases, such as regular beta-lactamases or cephalosporinases, also contribute to antibiotic resistance, ESBLs represent a specific category that has extended the spectrum of resistance beyond what was previously seen with older beta-lactamases. Hence, understanding the role of ESBLs in antibiotic resistance is crucial

Extended-spectrum beta-lactamases (ESBLs) are enzymes produced by certain Enterobacteriaceae that confer resistance to a broad range of beta-lactam antibiotics, including penicillins and cephalosporins. These enzymes work by hydrolyzing the beta-lactam ring, rendering the antibiotics ineffective. The production of ESBLs is particularly concerning in clinical settings, as it limits treatment options and can lead to treatment failures in infections caused by ESBL-producing strains.

ESBLs are typically associated with infections caused by organisms such as Escherichia coli and Klebsiella pneumoniae. The ability to produce these enzymes is often linked to plasmids, which can be easily transferred between bacteria, further spreading antibiotic resistance within bacterial populations. This resistance mechanism has led to significant public health challenges, prompting the need for careful antibiotic stewardship and infection control measures.

While other types of beta-lactamases, such as regular beta-lactamases or cephalosporinases, also contribute to antibiotic resistance, ESBLs represent a specific category that has extended the spectrum of resistance beyond what was previously seen with older beta-lactamases. Hence, understanding the role of ESBLs in antibiotic resistance is crucial