Cited by 159Pancreatic function and diabetesMetabolism, Diabetes, and CancerDiabetes Treatment and Management

The Changes in Adenine Nucleotides Measured in Glucose-stimulated Rodent Islets Occur in β Cells but Not in α Cells and Are Also Observed in Human Islets

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Detimary, Philippe, Dejonghe, Sandra, Ling, Zhidong, Pipeleers, Daniel, Schuit, Frans, Henquin, Jean-Claude·1998·Journal of Biological Chemistry

Abstract

Glucose metabolism by pancreatic beta and alpha cells is essential for stimulation of insulin secretion and inhibition of glucagon secretion. Studies using rodent islets have suggested that the ATP/ADP ratio serves as second messenger in beta cells. This study compared the effects of glucose on glucose oxidation ([U-14C]glucose) and adenine nucleotides (luminometric method) in purified rat alpha and beta cells. The rate of glucose oxidation at 1 mM glucose was higher in beta than alpha cells (4.5-fold, i.e. approximately 2-fold after normalization for cell size). It was more strongly stimulated by 10 mM glucose in beta cells (9-fold) than in alpha cells (5-fold). At 1 mM glucose, ATP levels were similar in both cell types, which corresponds to an approximately 2-fold higher concentration in alpha cells ( approximately 6.5 mM) than in beta cells ( approximately 3 mM). In beta cells, glucose dose-dependently increased ATP and decreased ADP levels, causing a rise in the ATP/ADP ratio from 2.4 to 11.6 at 1 and 10 mM, respectively. In alpha cells, glucose did not affect ATP and ADP levels, and the ATP/ADP ratio remained stable around 7.5. In human islets, the ATP/ADP ratio progressively increased between 1 and 10 mM glucose. In duct cells, which often contaminate human islet preparations, an increase in the ATP/ADP ratio sometimes occurred between 1 and 3 mM glucose. In conclusion, the present observations establish that the regulation of glucagon secretion by glucose does not involve changes in alpha cell adenine nucleotides and further support the role of the ATP/ADP ratio in the control of insulin secretion.

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Crossref · 10.1074/jbc.273.51.33905

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  • Biochemical measurements of [ATP]i in purified rat β-cells suggest ATP is ~2 mM under basal conditions and rises to 4 mM when glucose is increased to 10 mM.

    “These values are in broad agreement with biochemical measurements of [ATP]i in purified rat β-cells which suggest ATP is ~2 mM under basal conditions and rises to 4 mM when glucose is increased to 10 mM (142) (see v).”

    From Pancreatic β-Cell Electrical Activity and Insulin Secretion: Of Mice and Men (2018) · cites this paper as [142]

    The Discussion reports that ATP concentration in purified rat β-cells rose when glucose increased from 1 to 10 mM, supporting the direction of the claim. But it calculates a rise from approximately 3 to 7 mM, not 2 to 4 mM, and cautions that these values do not exactly represent cytoplasmic concentrations. (LLM, conf=0.88)

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Research works printed but not linked: 1

  1. Heimberg, H., De Vos, A., Moens, K., Quartier, E., Bouwens, L., Pipeleers, D., Van Schaftingen, E., Madsen, O., and Schuit, F. (1996) Proc. Natl. Acad. Sci. U. S. A. 93, 7036 -7041

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Authors
Detimary, P., Dejonghe, S., Ling, Z., Pipeleers, D., Schuit, F., & Henquin, J.-C.
Affiliations
  • UCLouvain (BE)
  • Vrije Universiteit Brussel (BE)
Corresponding author
Henquin, Jean-Claude
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-12
Volume
273
Issue
51
Pages
33905-33908
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2023149007
Cited by
159
References
38
Citations by year
2026: 1 · 2024: 4 · 2023: 8 · 2022: 2 · 2021: 7 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 1 · 2016: 3 · 2015: 9 · 2014: 13 · 2013: 8 · 2012: 6
FWCI
4.45
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIAL (Catholic University of Leuven) (submittedVersion)
Funders
  • Fédération Wallonie-Bruxelles
  • Vlaamse regering
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
adenine nucleotides, ATP/ADP ratio, pancreatic beta cells, alpha cells, glucose oxidation, insulin secretion, glucagon secretion, second messengers, human islets, duct cells
MeSH terms
Adenosine Diphosphate, Adenosine Triphosphate, Adult, Animals, Cells, Cultured, Glucose, Glycolysis, Humans, Islets of Langerhans, Kinetics, Male, Middle Aged, Species Specificity, Rats, Wistar, Rats

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