Bacterial Infections · Pathology

What is the primary mechanism of tissue damage in infections caused by Clostridium perfringens (Gas Gangrene)?

  1. Inhibition of protein synthesis via EF-2
  2. Production of Alpha-toxin (lecithinase) that degrades cell membranes
  3. Superantigen-induced cytokine storm
  4. Endotoxin-mediated activation of the alternative complement pathway
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Correct answer: Production of Alpha-toxin (lecithinase) that degrades cell membranes

Clostridium perfringens produces alpha-toxin, a phospholipase (lecithinase) that destroys red blood cells and platelets while causing extensive myonecrosis. This leads to the characteristic gas production and rapid tissue destruction seen in gas gangrene.

Difficulty: Medium Question 2 of 20

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