Type 2 diabetes control in a nonobese rat model using sleeve gastrectomy with duodenal-jejunal bypass (SGDJB).
BACKGROUND
As a new bariatric procedure, sleeve gastrectomy with duodenal-jejunal bypass (SGDJB) needs further assessment. We compared the diabetic control between SGDJB and sleeve gastrectomy (SG) in Goto-Kakizaki (GK) rats, a nonobese rat model of type 2 diabetes. Our aim is firstly to develop a nonobese diabetic rat model for SGDJB and secondly to investigate the feasibility and safety of SGDJB to induce diabetes remission.


METHODS
Fifty 11-week-old male GK rats were divided into five groups: sham-operated SG (SOSG), sham-operated SGDJB (SOSGDJB), control, SG, and SGDJB. Rats were observed for 16 weeks after surgery. The body weight, food intake, glycemic control outcomes, ghrelin, peptide YY (PYY), insulin, glucagon-like peptide 1 (GLP-1), and glucose-dependent insulinotropic peptide were measured.


RESULTS
The operated groups showed lower food intake since 4 weeks postoperation and significant weight loss since 6 weeks postoperation. SGDJB and SG surgeries induced a decreased fasting ghrelin level and increased levels of glucose-stimulated insulin, GLP-1, and PYY secretion at 2 and 16 weeks postoperation. Compared with the SG group, the SGDJB group showed higher glucose-stimulated GLP-1 levels. Both SGDJB and SG groups exhibited significant improvement in oral glucose tolerance and insulin tolerance compared with sham-operated and control groups, but there was no difference between the operated groups.


CONCLUSIONS
This nonobese diabetic rat model may be valuable in studying the effect of SGDJB on diabetic control. SGDJB shows similar improvement of glucose metabolism with SG. Our findings do not provide evidence for the foregut-mediated amelioration in glucose homeostasis.
Department of General Surgery, Qilu Hospital of Shandong University, #107 Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.
Dong
D
Sun
Shaozhuang
S
Liu
Guangyong
G
Zhang
Weijie
W
Chen
Zhibo
Z
Yan
Sanyuan
S
Hu
D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D003921:Diabetes Mellitus, Experimental / Q000097:blood / Q000601:surgery*; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000601:surgery*; D004386:Duodenum / Q000601:surgery*; D015391:Gastroplasty; D054439:Ghrelin / Q000097:blood; D052216:Glucagon-Like Peptide 1 / Q000097:blood; D005951:Glucose Tolerance Test; D006706:Homeostasis; D007328:Insulin / Q000097:blood; D007583:Jejunum / Q000601:surgery*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012074:Remission Induction; D015431:Weight Loss
D001786:Blood Glucose; D054439:Ghrelin; D007328:Insulin; D052216:Glucagon-Like Peptide 1