Research Article Details

Article ID: A10281
PMID: 31401193
Source: EBioMedicine
Title: Simulation of gastric bypass effects on glucose metabolism and non-alcoholic fatty liver disease with the Sleeveballoon device.
Abstract: BACKGROUND: Gastric bypass surgery is a very effective treatment of obesity and type 2 diabetes. However, very few eligible patients are offered surgery. Some patients also prefer less invasive approaches. We aimed to study the effects of the Sleeveballoon - a new device combining an intragastric balloon with a connecting sleeve, which covers the duodenal and proximal jejunal mucosa - on insulin sensitivity, glycemic control, body weight and body fat distribution. METHODS: We compared the effects of Sleeveballoon, Roux-en-Y Gastric-Bypass (RYGB) and sham-operation in 30 high-fat diet (HFD) fed Wistar rats. Whole body and hepatic insulin sensitivity and insulin signaling were studied. Transthoracic echocardiography was performed using a Vevo 2100 system (FUJIFILM VisualSonics Inc., Canada). Gastric emptying was measured using gastrografin. FINDINGS: Hepatic (P&#8239;=&#8239;.023) and whole-body (P&#8239;=&#8239;.011) insulin sensitivity improved in the Sleeveballoon and RYGB groups compared with sham-operated rats. Body weight reduced in both Sleeveballoon and RYGB groups in comparison to the sham-operated group (503.1&#8239;&#177;&#8239;8.9 vs. 614.4&#8239;&#177;&#8239;20.6&#8239;g, P&#8239;=&#8239;.006 and 490.0&#8239;&#177;&#8239;17.7 vs. 614.4&#8239;&#177;&#8239;20.6&#8239;g, P&#8239;=&#8239;.006, respectively). Ectopic fat deposition was drastically reduced while glycogen content was increased in both liver and skeletal muscle. Gastric emptying (T1/2) was longer (157.7&#8239;&#177;&#8239;29.2&#8239;min, P&#8239;=&#8239;.007) in the Sleeveballoon than in sham-operated rats (97.1&#8239;&#177;&#8239;26.3&#8239;min), but shorter in RYGB (3.5&#8239;&#177;&#8239;1.1&#8239;min, P&#8239;<&#8239;.0001). Cardiac function was better in Sleeveballoon and RYGB versus sham-operated rats. INTERPRETATION: The Sleeveballoon reduces peripheral and hepatic insulin resistance, glycaemia, body weight and ectopic fat deposition to a similar level as RYGB, although the contribution of gastric emptying to blood glucose reduction is different.
DOI: 10.1016/j.ebiom.2019.07.069