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β-Lactam Antibiotics Mechanism and Resistance

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β-Lactam Antibiotics Mechanism and Resistance

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Questions and Answers

What is the common feature of penicillins, cephalosporins, carbapenems, and monobactam?

Structure of bacterial peptidoglycan cell wall

Mechanism of action in inhibition of protein synthesis

Presence of β-lactam ring (correct)

Inhibition of bacterial DNA replication

What is the mechanism of action of β-lactam antibiotics?

Disruption of bacterial plasma membrane

Inhibition of bacterial DNA replication

Inhibition of protein synthesis

Inhibition of the synthesis of bacterial peptidoglycan cell wall (correct)

What is the main reason for the decreased effectiveness of β-lactam antibiotics?

Increase in bacterial mutation rate

Increase in β-lactamase production (correct)

Increase in bacterial conjugation rate

Decrease in antibiotic dosing

What is the role of β-lactamase inhibitors such as clavulanate and avibactam?

<p>To extend the utility of β-lactam antibiotics against β-lactamase–producing organisms</p> Signup and view all the answers

What is the primary consequence of bacterial resistance to β-lactam antibiotics?

<p>Decreased utility of β-lactam antibiotics</p> Signup and view all the answers

Study Notes

β-Lactam Antibiotics

Penicillins, cephalosporins, carbapenems, and monobactams share a common structure, known as the β-lactam ring.
These antibiotics inhibit the synthesis of the bacterial peptidoglycan cell wall, which is their mechanism of action.
Bacterial resistance against β-lactam antibiotics is increasing rapidly.
β-Lactamase inhibitors, such as clavulanate and avibactam, can be used to extend the utility of these antibiotics.
β-Lactamase inhibitors are effective against β-lactamase–producing organisms.

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Description

This quiz covers the mechanism of action of β-lactam antibiotics, including penicillins, cephalosporins, carbapenems, and monobactams, and their resistance in bacteria. It also discusses the use of β-lactamase inhibitors to extend the utility of these antibiotics.