Refereed journal article or data article (A1)

Effects of meal and incretins in the regulation of splanchnic blood flow




List of AuthorsKoffert J, Honka H, Teuho J, Kauhanen S, Hurme S, Parkkola R, Oikonen V, Mari A, Lindqvist A, Wierup N, Groop L, Nuutila P

PublisherBIOSCIENTIFICA LTD

Publication year2017

JournalEndocrine Connections

Journal name in sourceENDOCRINE CONNECTIONS

Journal acronymENDOCR CONNECT

Volume number6

Issue number3

Start page179

End page187

Number of pages9

ISSN2049-3614

DOIhttp://dx.doi.org/10.1530/EC-17-0015

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/26397278


Abstract
Objective: Meal ingestion is followed by a redistribution of blood flow (BF) within the splanchnic region contributing to nutrient absorption, insulin secretion and glucose disposal, but factors regulating this phenomenon in humans are poorly known. The aim of the present study was to evaluate the organ-specific changes in BF during a mixed-meal and incretin infusions.Design: A non-randomized intervention study of 10 healthy adults to study splanchnic BF regulation was performed.Methods: Effects of glucose-dependent insulinotrophic polypeptide (GIP) and glucagon-like peptide 1 (GLP-1) infusions and mixed-meal were tested in 10 healthy, glucose tolerant subjects using PET-MRI multimodal imaging technology. Intestinal and pancreatic BF and blood volume (BV) were measured with O-15-water and O-15-carbon monoxide, respectively.Results: Ingestion of a mixed-meal led to an increase in pancreatic and jejunal BF, whereas duodenal BF was unchanged. Infusion of GIP and GLP-1 reduced BF in the pancreas. However, GIP infusion doubled blood flow in the jejunum with no effect of GLP-1.Conclusion: Together, our data suggest that meal ingestion leads to increases in pancreatic BF accompanied by a GIP-mediated increase in jejunal but not duodenal blood flow.

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Last updated on 2022-07-04 at 16:31