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. Author manuscript; available in PMC: 2008 Apr 4.
Published in final edited form as: Biochemistry. 2005 Sep 20;44(37):12606–12613. doi: 10.1021/bi050926p

Figure 4.

Figure 4

Antioxidant activity of Aβ42. (A) Lipid oxidation by Cu(II) (2.0 μM) and H2O2 (200 μM) in the absence (filled symbols) of Aβ42 and in the presence of 1 or 5 μM Aβ42 (open symbols). (B) Lipid and (C) dopamine concentrations at 120 min of oxidation in the presence of various Aβ and control peptides (5 μM) [Neu = neurotensin, α-MSH]. Aβ was not preincubated with copper in these experiments; Cu(II) (2 μM) and H2O2 (200 μM) were added to a mixture of Aβ and lipid to initiate the experiment.