Abstract

All available bafilomycins (A1, B1, C1 and D) inhibit and revert macroscopic vacuolization induced by Helicobacter pylori cell-free extracts. Bafilomycin A1 displays the highest activity, followed by bafilomycin B1, C1 and D. The different potency of bafilomycins correlates with their ability to inhibit the vacuolar-type ATPase (V-ATPase) and to dissipate the membrane pH gradient of intracellular acidic organelles. These results suggest that bafilomycins should be considered as possible therapeutic agents in the treatment of gastritis.

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