Drug Resistance Mechanisms · Pharmacology

Extended-spectrum beta-lactamases (ESBLs) confer resistance to:

  1. Aminoglycosides and macrolides
  2. Penicillins and cephalosporins
  3. Macrolides and tetracyclines
  4. Fluoroquinolones and sulfonamides
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Correct answer: Penicillins and cephalosporins

ESBLs hydrolyze a wide range of beta-lactam antibiotics, including penicillins and third-generation cephalosporins. They are commonly found in Gram-negative bacteria.

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