Physicochemical parameters of the interaction between Aβ1–40 and the indicated lipid monolayers.

Each monolayer was prepared at initial pressure (πi) of 13–15 mN.m−1.The synthetic Aβ1–40 peptide was injected in the subphase which consisted of pure water or, when indicated, of NaCl or NaF solutions. Each experiment was performed in triplicate. The data are expressed as the mean ± SD (n = 3). An initial vi with a null value means that there is no increase in the surface pressure over the 20 first minutes of incubation.