Table 2.

Comparison of time-resolved fluorometric parameters of DHE in lipid bilayers of different sterol mole fractions in the absence and presence of Aβ

Xsterol	Aβ (μM)	τ (ns)	ρ (ns)
0.01	0	1.22 ± 0.01	7.30 ± 0.39
	20m	1.10 ± 0.02	5.00 ± 0.22
	20°	1.00 ± 0.01	6.87 ± 0.40
0.30	0	1.28 ± 0.01	10.58 ± 0.92
	20m	1.46 ± 0.02	8.20 ± 0.55
	20°	1.12 ± 0.01	12.24 ± 1.96
0.36	0	1.28 ± 0.01	10.27 ± 0.96
	20m	1.50 ± 0.01	8.05 ± 0.57
	20°	1.04 ± 0.01	12.72 ± 1.61
0.40	0	1.33 ± 0.01	11.30 ± 1.11
	20m	1.54 ± 0.01	9.22 ± 0.69
	20°	1.15 ± 0.01	15.25 ± 2.02
0.45	0	1.27 ± 0.02	10.21 ± 0.72
	20m	1.52 ± 0.01	10.17 ± 0.65
	20°	0.84 ± 0.02	10.27 ± 1.36

The average fluorescence decay lifetime (τ) and rotational correlation time (ρ) of DHE in the absence and presence of monomeric or oligomeric Aβ (denoted by superscript m or o, respectively) are shown.