Skip to main content
. 2017 Aug 2;12(8):e0182194. doi: 10.1371/journal.pone.0182194

Table 5. Summary of results.

AFM/KPFM study on topographical and electrical surface potential features of the models in monolayer form; Black Lipid Membrane analysis on the permeability of each model and the effect of Aβ on this conductance; and AFM liquid imaging of Aβ accumulation over time on each model membrane.

Healthy Model Diseased 1 Model Diseased 2 Model
Monolayer Morphology–AFM / KPFM Analysis
Topographical
Δh
0.986 ± 0.02 nm 1.051 ± 0.016 nm 0.500 ± 0.03 nm
Lower than Healthy Model
Electrostatic Surface Potential
ΔV
24.64 ± 1.10 mV 70.47 ± 5.41 mV
Higher than Healthy Model
11.63 ± 0.59 mV
Lower than Healthy Model
Black Lipid Membrane (BLM) Analysis
Pore Forming Activity (PFA) No significant increase in PFA with addition of amyloid Highest PFA of three systems studied
Significant increase in PFA with addition of amyloid
Significant increase in PFA with addition of amyloid
Aβ Binding to Model Membranes
Aβ Accumulation Over Time measured via Roughness Measurements Increases with time Fluctuate between increases and decreases over time
Indicative of amyloid penetrating into membrane
Initial increase followed by large decrease
Indicative of an initial accumulation event preceding membrane disruption/penetration