Abstract
Purpose
Despite exhaustive research and improvement of techniques, anastomotic leakage remains a frequent complication in gastrointestinal surgery. As leakage is associated with poor perfusion, reliable objective methods to assess anastomotic perfusion are highly demanded. In addition, such methods enable evaluation of interventions that may improve anastomotic perfusion. Glucagon-like peptide 2 (GLP-2) is an enteroendocrine hormone that regulates mid-gut perfusion. In the present study, we aimed to explore if quantitative perfusion assessment with indocyanine green (q-ICG) could detect an increase in porcine anastomotic perfusion after treatment with GLP-2.
Methods
Nineteen pigs had two small bowel resections followed by anastomosis. Blinded to all investigators, animals were randomized to receive GLP-2 or placebo. Anastomotic perfusion was assessed at baseline, 30 min after injection of GLP-2/placebo, and after 5 days of treatment. Anastomotic strength and healing were evaluated by bursting pressure and histology.
Results
Q-ICG detected a significantly higher increase in anastomotic perfusion (p < 0.05) in animals treated with GLP-2, compared with placebo. No significant differences in anastomotic strength or healing were found.
Conclusions
Q-ICG is a promising tool for perfusion assessment in gastrointestinal surgery and opens new opportunities in research of factors that may influence anastomotic healing, but further research is warranted to evaluate the effects of GLP-2 on anastomotic healing.
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Acknowledgments
Authors sincerely thank Lars Thim, Ph.D., DMSci, Novo Nordisk, Denmark for providing the GLP-2 analog (NNCD 0103-0000-0066). Furthermore, we thank Professor Palle Bekker Jeppesen, Ph.D., DMSci, Department of Medical Gastroenterology, Rigshospitalet, Denmark for invaluable advice during the study design.
Funding
The study was sponsored by donations from private foundations: Mogens Andresen fonden, Civilingeniør Johannes Elmqvist Ormstrup og Hustru Grete Omstrups Fond, and Fabrikant Frands Køhler Nielsens og Hustrus Mindelegat. Sponsors had no role in study design, interpretation of results or any other part of the study.
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Authors and Affiliations
Contributions
• Study conception and design: NN, LBS, MPA.
• Acquisition of data: NN, LLR, RBS, CE, MBS, JP, GLW, BH, LBS, MPA.
• Analysis and interpretation of data: NN, MBS, JP, GLW, BH, LBS, MPA.
• Drafting of the manuscript: NN.
• Critical revision and final approval of the manuscript: NN, LLR, RBS, CE, MBS, JP, GLW, BH, LBS, MPA.
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Ethics declarations
The study followed the Danish and European Union legislation on animal experimentation and was approved by the Danish Animal Experimentation Council (#2016-15-0201-01015).
Ethical approval
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.
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Nerup, N., Ring, L.L., Strandby, R.B. et al. Quantitative perfusion assessment of intestinal anastomoses in pigs treated with glucagon-like peptide 2. Langenbecks Arch Surg 403, 881–889 (2018). https://doi.org/10.1007/s00423-018-1718-6
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DOI: https://doi.org/10.1007/s00423-018-1718-6