Neurotensin secretion after Roux-en-Y gastric bypass, sleeve gastrectomy, and truncal vagotomy with pyloroplasty

Maria S Svane, Caroline C Øhrstrøm, Astrid Plamboeck, Nils B Jørgensen, Kirstine N Bojsen-Møller, Carsten Dirksen, Christoffer Martinussen, Tina Vilsbøll, Bolette Hartmann, Carolyn F Deacon, Viggo B Kristiansen, Filip K Knop, Lars B Svendsen, Sten Madsbad, Jens J Holst, Simon Veedfald

3 Citations (Scopus)

Abstract

OBJECTIVE: Neurotensin (NT) is released from enteroendocrine cells and lowers food intake in rodents. We evaluated postprandial NT secretion in humans after surgeries associated with accelerated small intestinal nutrient delivery, and after Roux-en-Y gastric bypass (RYGB) when glucagon-like peptide-1 (GLP-1) signalling and dipeptidyl peptidase 4 (DPP-4) were inhibited, and during pharmacological treatments influencing entero-pancreatic functions.

METHODS: We measured NT concentrations in plasma from meal studies: (I) after truncal vagotomy with pyloroplasty (TVP), cardia resection +TVP (CTVP), and matched controls (n = 10); (II) after RYGB, sleeve gastrectomy (SG), and in matched controls (n = 12); (III) after RYGB (n = 11) with antagonism of GLP-1 signalling using exendin(9-39) and DPP-4 inhibition using sitagliptin; (IV) after RYGB (n = 11) during a run-in period and subsequent treatment with, sitagliptin, liraglutide (GLP-1 receptor agonist), verapamil (calcium antagonist), acarbose (alpha glucosidase inhibitor), and pasireotide (somatostatin analogue), respectively.

RESULTS: (I) NT secretion was similar after TVP/CTVP (p = 0.9), but increased vs. controls (p < 0.0001). (II) NT secretion was increased after RYGB vs. SG and controls (p < 0.0001). NT responses were similar in SG and controls (p = 0.3), but early postprandial NT concentrations were higher after SG (p < 0.05). (III) Exendin (9-39) and sitagliptin did not change NT responses vs placebo (p > 0.2), but responses were lower during sitagliptin vs. exendin(9-39) (p = 0.03). (IV) Pasireotide suppressed NT secretion (p = 0.004). Sitagliptin tended to lower NT secretion (p = 0.08). Liraglutide, verapamil, and acarbose had no effect (p > 0.9).

CONCLUSION: Neurotensin secretion is increased after surgeries associated with accelerated gastric emptying and lowered by pasireotide.

Original languageEnglish
Article numbere14210
JournalNeurogastroenterology and Motility
Volume34
Issue number1
Pages (from-to)1-8
Number of pages8
ISSN1350-1925
DOIs
Publication statusPublished - Jan 2022

Keywords

  • bariatric surgery
  • gastrointestinal hormones
  • obesity surgery
  • vagus nerve
  • Gastric Bypass
  • Neurotensin/blood
  • Humans
  • Liraglutide/administration & dosage
  • Blood Glucose
  • Gastrectomy
  • Vagotomy, Truncal
  • Postprandial Period
  • Obesity/blood
  • Glucagon-Like Peptide 1/blood
  • Hypoglycemic Agents/pharmacology

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