Table 6.

Statistically significant correlations between redox biomarkers and clinical parameters.

Pair of variables	r	p
AD
MMSE and SWS flow	0.908	< 0.0001
MMSE and plasma MDA	0.955	< 0.0001
SWS AOPP and SWS flow	− 0.672	0.002
SWS AOPP and SWS GSH	− 0.607	0.003
SWS Px and time elapsed from the diagnosis	0.877	< 0.0001
SWS SOD and time elapsed from the diagnosis	0.677	0.004
SWS SOD and SWS Aβ	0.732	0.0001
C
AOPP and hydration of buccal mucosa	0.747	< 0.0001

AD—Alzheimer’s disease; MMSE—Mini-Mental State Examination; SWS—stimulated whole saliva; MDA—malondialdehyde; AOPP—advanced oxidation protein products; GSH—reduced glutathione; GPx—glutathione peroxidase; SOD—superoxide dismutase; Aβ—amyloid β; C—control group.