Children with type 2 diabetes mellitus are at greater risk of macrovascular complications.

Background:  Type 2 diabetes mellitus (DM) is a risk factor for macrovascular complications in adults. Recently young-onset type 2 DM has increased worldwide and the increase of macrovascular complications in the young is worrisome. Methods:  Plasma values for plasminogen activator inhibitor-1 (PAI-1) as a marker for promotion, and adiponectin as a marker for inhibition of atherosclerosis, were compared in 33 patients with type 1 DM (16 boys, 17 girls; age 14.9 ± 3.7 years, mean ± standard deviation) with those of 43 patients with type 2 DM (15 boys, 28 girls; age 16.5 ± 3.5 years). Results:  The PAI-1 level was significantly higher (19.3 ± 8.1 vs 32.9 ± 17.2 ng/ml; P < 0.001) and the adiponectin level was significantly lower (10.1 ± 3.8 vs 7.4 ± 3.7 µg/ml; P < 0.005) in the type 2 DM group. In obese patients, the PAI-1 level was significantly higher (P < 0.005) and the adiponectin level was lower (P= 0.15) in the type 2 DM group. Also, in the non-obese subjects, the PAI-1 level was significantly higher (P < 0.05) and the adiponectin level was lower (P= 0.11) in the type 2 DM group. Conclusions:  Even in young patients, type 2 DM is a risk factor for macrovascular complications compared with type 1 DM.