Fig. 4
From: Reduced cGMP levels in CSF of AD patients correlate with severity of dementia and current depression
AD patients with current depression show a decrease in CSF levels of cGMP and significantly lower MMSE scores. a CSF concentration of cGMP is decreased in AD patients suffering from current depression compared with non-depressed AD patients (p = 0.07, Mann–Whitney U test). b AD patients with current depression show significantly lower MMSE scores (p = 0.03, Mann–Whitney U test). AD Alzheimer’s disease, cGMP cyclic guanosine-3',5'-monophosphate, depr. depression, MMSE mini-mental state examination