Duodenal endoluminal sleeve improves glucose metabolism of non-obese type 2 diabetic rats

Objective To observe the effect of duodenal endoluminal sleeve (ELS)on.glucose metabolism of non-obese type 2 diabetes mellitus (T2DM)rats.Methods 24 male spontaneously diabetic Goto-Kakizaki (GK) rats were randomly divided into surgery group(ELS,n =12)and sham-operated group (SO,n =12).Fasting plasma glucose(FPG) levels of the 2 groups were observed before surgery(0 weeks),or on 1 st,3rd 6th,12th,and 24th week after surgery.Oral glucose tolerance test(OGTT) was performed before surgery (0 weeks),or on 6th and 24th week after surgery.Blood glucose versus time curve was depicted and glucose tolerance area under the curve(AUC)was calculated.Glucagon-like peptide-1 (GLP-1)concentration levels were measured 2 hours after glucose load.Results There was no significant difference between the 2 groups in various indicators before surgery.For ELS group,FPG level significantly decreased on 1 st,3rd 6th,12th,and 24th week after surgery (Fintra-group =5.982,P ＜ 0.01)compared with that before surgery.AUC and blood glucose peak were both loweron 6th and 24th week after surgery than those before surgery (Fintya-group =11.602,P =0.003).OGTT glucose peak reduced to 30 minutes from the original 60 minutes.GLP-1 level significantly increased after glucose load (Fintra-group =43.24,P ＜ 0.05) ; All the index of SO group had no significant change.Conclusion Duodenal ELS has effect on blood glucose control and glucose tolerance improvement in non-obese T2DM rats. Key words: Type 2 diabetes mellitus;  Duodenum;  Cavity casing;  Blood glucose