Purpose: The aim of this study was to assess the efficacy of liraglutide on prevention of dementia in elderly patients with type 2 diabetes (T2DM).
Subjects and methods: We studied 34 (male 8/female 26) outpatients with 65 years or older, whose HbA1c was over 7.0% by other antidiabetic treatment. We administrated liraglutide 0.3mg before breakfast for the first week, 0.6mg for the second week, and 0.9mg after the third week. 34 subjects in the liraglutide group (G group) [8 males/ 26 females, 75.7±7.8 years old, HbA1c 7.5 ± 0.38%] were followed-up for 3 years. We examined Voxel-based Specific Regional Analysis System for Alzheimer’s Disease (VSRAD) on MRI, max-IMT measured by carotid artery echo, visceral fat area, HbA1c, FPG, serum HDL/LDL level, and TG, both before and after the treatment.10 patients in the linagliptin group (D group) in which ages, HbA1c, visceral fat, and VSRAD were matched with G group were used as controls.
Result: After 3 years, VSRAD was not changed in G group and was significantly deteriorated in D group (G group: 1.22±0.73→1.19±0.73 (NS) vs. G group: 1.36±0.87→1.53±0.99 (p = 0.022)). Max IMT was significantly improved in G group (2.42±1.65→2.14±1.40 (p =0.035) vs. 2.25±1.19→2.19±1.01(NS)). Visceral fat was significantly reduced in G group (137.1±54.0→128.0±59.3 (p <0.01) vs. 114.3±55.8 → 116.5±66.2 (NS)). HbA1c (7.5±0.38 → 6.8±0.46 vs. 7.3±0.55 → 6.9±0.42%), FPG (137±19 → 121±11 vs. 135 ±21 → 118±16 mg/dl), were significantly improved in both groups (p<0.01). No hypoglycemia requiring medical intervention was observed. Lipid was significantly improved only in TG in G group (TG: 162±53→145±34 (p <0.01) vs. 185±45→159±48 mg/dl (NS)). There was no onset of dementia.
Conclusion: Liraglutide improved the glycemic control, lipid profile, and visceral obesity of elderly patients with T2DM for 3 years. In addition, the hippocampal atrophy and arteriosclerosis were not deteriorated, suggesting the possibility of being effective for prevention of dementia.
M. Yoshida: None. T. Morimoto: None. E. Oh: None. N. Yamamoto: None. K. Nagata: None. A. Saeki: None. E. Sasaki: None. S. Yoshida: None. T. Kuzuya: None. N. Ohsawa: None. M. Sugino: None.