Abstract:Objective To investigate the effect of glucagon-like peptide-1 (GLP-1) receptor agonist Liraglutide combined with insulin aspart 30 on the cognitive impairment of the patients with type 2 diabetes mellitus. Methods A total of 132 consecutive patients with type 2 diabetes mellitus in our hospital between September 2014 and January 2016 were recruited. The patients were randomly divided into two treatment groups: insulin aspart 30 group (control group, 66 cases), Liraglutide combined with insulin aspart 30 group (research group, 66 cases). The patients were followed up 1 y after treatment. The changes of blood glucose, lipid biochemical indexes, body mass index (BMI) and cognitive function before and after treatment were compared between the two groups. Results The follow-up results showed that glucose and BMI in the research group were improved when compared with the control group, and the total scores of cognitive function scales MMSE, MoCA and CMS were higher than those in the control group (P < 0.05). Conclusions Liraglutide combined with insulin aspart 30 has better clinical curative effect in the control of blood glucose, reducing blood lipids and improving BMI than insulin aspart 30 alone, and it can also improve the cognitive function of the patients with diabetes mellitus.