Content area
Full Text
OBES SURG (2015) 25:550558 DOI 10.1007/s11695-014-1535-0
NEW CONCEPT
Embolization of Arterial Gastric Supply in Obesity (EMBARGO): an Endovascular Approach in the Management of Morbid Obesity. Proof of the Concept in the Porcine Model
Michele Diana & Raoul Pop & Rmy Beaujeux & Bernard Dallemagne &
Peter Halvax & Isabel Schlagowski & Yu-Yin Liu & Pierre Diemunsch &
Bernard Geny & Veronique Lindner & Jacques Marescaux
Published online: 16 December 2014# Springer Science+Business Media New York 2014
AbstractBackground Embolization of the left gastric artery (LGA) reduces circulating levels of ghrelin, but might prevent from further obesity surgery, particularly sleeve gastrectomy (SG), since the gastroesophageal junction (GEJ), depending on LGA, would be devascularized. Our aim was to evaluate, in an experimental animal study, an endovascular approach targeting arteries of the gastroepiploic arcade aiming to modulate ghrelin levels and to generate an increased vascular supply of the GEJ to reduce the risks of staple-line leaks after SG.
Methods Seven pigs underwent embolization of both left and right gastroepiploic arteries (LGEA and RGEA) using 500 700- microspheres (embolization of arterial gastric supply in obesity (EMBARGO)-alpha). A SG was performed in six pigs 3 weeks after EMBARGO-alpha and on eight controls.
Capillary lactates were measured at the cardia and pylorus. Five pigs underwent coiling of RGEA and embolization of LGEA using both coils and 100300- microspheres (EMBARGO-beta). Ghrelin levels were assessed before and once per week after both EMBARGOs. Control celiac trunk angiography was performed at 3 weeks (alpha) and 4 weeks (beta).
Results No significant ghrelin reduction was obtained with EMBARGO-alpha at 3 weeks when compared to baseline. Significant ghrelin reduction was found 3 weeks (p=0.0363) and 4 weeks (p=0.025) after EMBARGO-beta. Post-EMBARGO-alpha animals presented a significantly lower increase in cardia lactates when compared to controls after SG. Control angiography showed a significantly increased fundic vascular network in 5/6 animals after EMBARGO-alpha and in 5/5 after EMBARGO-beta.
Conclusions EMBARGO is effective to decrease ghrelin production and can enhance the vascular supply of the GEJ, preparing the vascular background for a SG.
Keywords Bariatric embolization . Ghrelin . Gastroepiploic arcade embolization . Ischemic preconditioning
Introduction
An important role in the genesis of obesity is played by gastrointestinal metabolic hormones, which control satiety [1]. The orexigenic (hunger trigger) hormone ghrelin...