This study was aimed at evaluating the cerebral alterations occurring
in diabetic subjects. The total study population consisted of 29 males
(mean age: 76.2 +/- 6.3 years) and 40 females (mean age: 74.2 +/- 8.6
years). The patients were divided in 3 groups: (i) Late onset elderly
diabetics (15 patients of mean age 76.9 +/- 7.6 years, onset of diabe
tes at 70 years of age): (ii) Early onset elderly diabetics (15 patien
ts of mean age 74.4 +/- 8.3 years, onset of diabetes at 46 years of ag
e); (iii) Non-diabetic elderly controls (39 patients of mean age 74.5
+/- 7.7 years). The patients underwent psychometric testings by using
the following methods: mini mental state examination (MMSE), geriatric
depression scale (GDS), activity of daily living (ADL), instrumental
activity of daily living (IADL): attentional matrix test (AMT), visuo-
spatial span test (VSST) and verbal span test (VST). The results indic
ate that diabetes is apparently not influencing the cognitive performa
nce. As regards the affective disorders, the late onset elderly diabet
ics display more depressive disorders than the other 2 groups of patie
nts studied.