Nitroxide Radical-Containing Redox Nanoparticles Protect Neuroblastoma SH-SY5Y Cells against 6-Hydroxydopamine Toxicity

Table 2

Reducing activity of the 6-hydroxydopamine, antioxidant amino acids, and standard antioxidants (ABTS assay) and generation of hydrogen peroxide in DMEM/F12 medium.

Compound.	Fast ABTS scavenging activity (Mol TE/Mol)	Slow ABTS scavenging activity (Mol TE/Mol)	H2O2 (μM)
6-Hydroxydopamine			7.8 ± 1.5
Tyrosine		—	—
Tryptophan		—	—
Ascorbic acid		—	33.6 ± 0.9
Glutathione		—	nd

; (independent samples). and: not detectable amounts; TE: Trolox equivalents.