Cited by 170Pancreatic function and diabetesDiabetes Treatment and ManagementCellular transport and secretion

Interplay of Nutrients and Hormones in the Regulation of Glucagon Release*

PIPELEERS, D. G., SCHUIT, F. C., SCHRAVENDIJK, C. F. H. VAN, WINKEL, M. VAN DE·1985·Endocrinology

Abstract

The role of nutrients and hormones in the regulation of glucagon release is investigated in pancreatic A cells purified by autofluorescence-activated cell sorting. Purified A cells lack secretory activity in 1-h incubation at 1.4 mM glucose. Their release mechanism can be activated by arginine, alanine, and glutamine, alone or in combination. Glucose inhibits amino acid-induced glucagon release through a direct insulin-independent action upon pancreatic A cells. Nutrient-induced glucagon release is suppressed by somatostatin and amplified by (Bu)2cAMP or epinephrine. The epinephrine stimulus is inhibited by 10(-11) M somatostatin and abolished by 10(-10) M of this peptide. The effects of somatostatin and epinephrine are associated with parallel changes in cellular cAMP levels, which is not the case for the variations induced by amino acids or glucose. It is confirmed that calcium is an essential requirement for glucagon release. In contrast to its exquisite sensitivity for somatostatin, the glucagon release process is relatively insensitive to insulin during a 1-h exposure. The hormone affects solely epinephrine-induced glucagon release and its inhibitory action is partial and only observed at 10(-7) M. This suppressive effect of insulin is not attributable to variations in glucose handling but appears associated with the stimulatory effect of epinephrine. It is concluded that a nutrient-induced signal interacts with a hormone-inducible cAMP signal to activate the secretory process in pancreatic A cells.

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Crossref · 10.1210/endo-117-3-817

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  • Studies of pancreatic islets and cells have provided additional evidence that glucose regulates glucagon release by a direct effect on the alpha cell.

    “and studies of pancreatic islets and cells have provided additional evidence that glucose regulates glucagon release by a direct effect on the alpha cell [5,[8][9][10][12][13][14][15][16][17].”

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Authors
PIPELEERS, D. G., SCHUIT, F. C., SCHRAVENDIJK, C. F. H. V., & WINKEL, M. V. D.
Affiliations
Vrije Universiteit Brussel (BE)
Venue
Endocrinology
Published
1985-09
Volume
117
Issue
3
Pages
817-823
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W4250756743
Cited by
169
References
0
Citations by year
2026: 4 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 1 · 2020: 1 · 2019: 7 · 2018: 6 · 2017: 2 · 2016: 5 · 2014: 5 · 2013: 2 · 2012: 5
FWCI
6.78
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • VUBIR (Vrije Universiteit Brussel) (submittedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
glucagon secretion, pancreatic A cells, nutrient regulation, amino acids, glucose, somatostatin, epinephrine, cyclic AMP, insulin, calcium, pancreatic islets
MeSH terms
Alanine, Amino Acids, Animals, Arginine, Calcium, Bucladesine, Epinephrine, Flow Cytometry, Glucagon, Glucose, Glutamine, Islets of Langerhans, Male, Pancreatic Hormones, Rats, Inbred Strains, Somatostatin, Rats, In Vitro Techniques

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