The effects of tetracycline and its analogues doxycycline and minocycline on Aβ42induced toxicity were assayed [20] using the worms expressing a temperature-inducible Aβ1–42 transgene [21]. Tetracyclines successfully protected worms from the Aβ insult by reducing the concentration of oligomers considered to be responsible for the toxic phenotype. These effects
were specific, dose-dependent and not linked to any antibiotic activity. Furthermore, tetracyclines protect Aβ-expressing nematodes from oxidative stress by reducing the superoxide production, suggesting a potential use of these drugs in targeting Aβ aggregates.