Surgery, Gastroenterology and Oncology
Vol. 24, No. 2, Apr 2019
Serum Gastric Biomarker Levels After Sleeve Gastrectomy and Roux-en-Y Gastric Bypass Operations: A Prospective Study with 1-year Follow-up
Jaanus Suumann, Toomas Sillakivi, Zivile Riispere, Kari Syrjänen, Pentti Sipponen, Ülle Kirsimägi, Ants Peetsalu
Article DOI: 10.21614/sgo-24-2-86
Objectives: To study the function of the gastric mucosa and acid secretion after bariatric surgery, GastroPanel (GP), serum biomarker test was performed in 29 laparoscopic sleeve gastrectomy (LSG) and 28 laparoscopic Roux-en-Y gastric bypass (LRYGB) patients before and after surgery.

Methods: Pepsinogen I (PGI), II (PGII), basal fasting gastrin-17 (G17b), stimulated gastrin-17 (G17s) and Helicobacter pylori antibody (HPAB) levels in serum were assayed preoperatively, postoperatively on days 1 and 3, and after 1, 3 and 12 months.

Results: The serum levels of PGI, PGII and the PGI PGII ratio declined significantly in the LSG patients immediately after surgery, and the low levels remained stable throughout the 1-year follow-up period. This was accompanied by a substantially increased output of G17b. In the LRYGB patients, PGI and PGII levels rose markedly during the first 3 postoperative days, thereafter the levels of PGI and PGII, and the PGI PGII ratio declined significantly. In contrast to LSG, the level of the G17b remained unchanged throughout the whole follow-up period in the LRYGB patients. Excess Weight Loss (%EWL) was 77% and 65% in the LSG and LRYGB groups, respectively. The preoperative biomarker profile did not correlate with %EWL in either of the operative groups.

Conclusions: Significant changes do occur in GP biomarker levels following LSG and LRYGB, suggesting reduced functional activity of the gastric corpus with consequent hypoacidity in the gastric remnant, particularly after LSG. Preoperative GP biomarker levels do not predict postoperative %EWL.

Full Text Sources: Download pdf
Abstract:   Abstract EN
Views: 3266

Watch Video Articles

For Authors

Journal Subscriptions

Current Issue

Jun 2024


Instructions for authors
Online submission
ISSN: 2559 - 723X (print)

e-ISSN: 2601 - 1700 (online)

ISSN-L: 2559 - 723X

Journal Abbreviation: Surg. Gastroenterol. Oncol.

Surgery, Gastroenterology and Oncology (SGO) is indexed in:
  • DOI/Crossref
  • Google Scholar
  • SCImago
  • Harvard Library
  • Open Academic Journals Index (OAJI)

Open Access Statement

Surgery, Gastroenterology and Oncology (SGO) is an open-access, peer-reviewed online journal published by Celsius Publishing House. The journal allows readers to read, download, copy, distribute, print, search, or link to the full text of its articles.

Journal Metrics

Time to first editorial decision: 25 days
Rejection rate: 61%
CiteScore: 0.2

Meetings and Courses in 2023
Meetings and Courses in 2022
Meetings and Courses in 2021
Meetings and Courses in 2020
Meetings and Courses in 2019
Verona expert meeting 2019

Creative Commons License
Surgery, Gastroenterology and Oncology applies the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits readers to copy and redistribute the material in any medium or format, remix, adapt, build upon the published works non-commercially, and license the derivative works on different terms, provided the original material is properly cited and the use is non-commercial. Please see: