Bariatric Radioembolization: A Pilot Study on Technical Feasibility and Safety in a Porcine Model. Academic Article uri icon


  • PURPOSE: To evaluate feasibility of left gastric artery (LGA) yttrium-90 ((90)Y) radioembolization as potential treatment for obesity in a porcine model. MATERIALS AND METHODS: This study included 8 young female pigs (12-13 weeks, 21.8-28.1 kg). Six animals received infusions of (90)Y resin microspheres (46.3-105.1 MBq) into the main LGA and the gastric artery arising from the splenic artery. Animal weight and serum ghrelin were measured before treatment and weekly thereafter. Animals were euthanized 69-74 days after treatment, and histologic analyses of mucosal integrity and ghrelin immunoreactive cell density were performed. RESULTS: Superficial mucosal ulcerations < 3.0 cm(2) were noted in 5 of 6 treated animals. Ghrelin immunoreactive cell density was significantly lower in treated versus untreated animals in the stomach fundus (13.5 vs 34.8, P < .05) and stomach body (11.2 vs 19.8, P < .05). Treated animals gained less weight than untreated animals over the study duration (40.2 kg 5.4 vs 54.7 kg 6.5, P = .053). Average fundic parietal area (165 cm(2) vs 282 cm(2), P = .067) and average stomach weight (297.2 g vs 397.0 g, P = .067) were decreased in treated versus untreated animals. Trichrome staining revealed significantly more fibrosis in treatment animals compared with control animals (13.0 vs 8.6, P < .05). No significant differences were identified in plasma ghrelin concentrations (P = .24). CONCLUSIONS: LGA (90)Y radioembolization is promising as a potential treatment for obesity. A larger preclinical study is needed to evaluate the safety and efficacy of this procedure further.

published proceedings

  • J Vasc Interv Radiol

altmetric score

  • 12.05

author list (cited authors)

  • Pasciak, A. S., Bourgeois, A. C., Paxton, B. E., Nodit, L., Coan, P. N., Kraitchman, D., ... Bradley, Y. C.

citation count

  • 12

complete list of authors

  • Pasciak, Alexander S||Bourgeois, Austin C||Paxton, Ben E||Nodit, Laurentia||Coan, Patricia N||Kraitchman, Dara||Stinnett, Sandra S||Patel, Vijay M||Fu, Yingli||Adams, Joleen K||Tolbert, M Katherine||Lux, Cassie N||Arepally, Aravind||Bradley, Yong C

publication date

  • January 2016