Antifungal Drugs · Pharmacology

Which mechanism explains how echinocandins kill fungal cells?

  1. Inhibition of fungal cell wall synthesis
  2. Inhibition of fungal DNA transcription
  3. Disruption of mitochondrial membrane potential
  4. Binding to ergosterol in the cell membrane
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Correct answer: Inhibition of fungal cell wall synthesis

Echinocandins inhibit the synthesis of beta-glucan, an essential component of the fungal cell wall. The weakened wall can no longer withstand osmotic pressure, causing cell lysis. Binding to ergosterol in the membrane is the mechanism of amphotericin B, not the echinocandins.

Difficulty: Medium Question 18 of 20

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