Enterotoxigenic Escherichia Coli - Enterotoxins

Enterotoxins

Enterotoxins produced by ETEC include heat-labile enterotoxin (LT) and heat-stable enterotoxin (ST).

  • LT is similar to cholera toxin; it increases the level of cAMP in intestinal cells, and this causes an increase in electrolyte and water excretion (diarrhea).
  • ST stimulates production of cGMP, also leading to increased fluid excretion and diarrhea.

Mnemonic: Labile like the Air (cAMP), Stable like the Ground(cGMP).

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