Cited by 116Pancreatic function and diabetesMetabolism, Diabetes, and CancerAdenosine and Purinergic Signaling

Glucose-induced changes in cytosolic ATP content in pancreatic islets

Malaisse, Willy J., Sener, Abdullah·1987·Biochimica et Biophysica Acta (BBA) - Molecular Cell Research

Abstract

The cytosolic and mitochondrial contents in ATP, ADP and AMP were measured in islets incubated for 45 min at increasing concentrations of D-glucose and then exposed for 20 s to digitonin. The latter treatment failed to affect the total islet ATP/ADP ratio and adenylate charge. D-Glucose caused a much greater increase in cytosolic than mitochondrial ATP/ADP ratio. In the cytosol, a sigmoidal pattern characterized the changes in ATP/ADP ratio at increasing concentrations of D-glucose. These findings are compatible with the view that cytosolic ATP participates in the coupling of metabolic to ionic events in the process of nutrient-induced insulin release.

Integrity signals

Registry

Crossref · 10.1016/0167-4889(87)90134-0

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29 of 29 references verified0 citation errors · 0 not checkable

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  • As intracellular ATP levels never fall below 1 mM in β-cells, even in the absence of glucose, KATP channels are largely closed even at resting glucose concentrations.

    “As intracellular ATP levels never fall below 1 mM in β-cells, even in the absence of glucose (143, 422), KATP channels are largely closed, even at resting glucose concentrations.”

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Authors
Malaisse, W. J., & Sener, A.
Affiliations
Université Libre de Bruxelles (BE)
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Cell Research
Publisher
Elsevier BV
Published
1987-02
Volume
927
Issue
2
Pages
190-195
ISSN
0167-4889 (ISSN-L)
OpenAlex
W2037863419
Cited by
116
References
29
Citations by year
2023: 2 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 4 · 2013: 1
FWCI
19.88
Type
journal article
Language
en
Open access
closed
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Cell Research (publishedVersion)
  • PubMed (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Funders
Fondation pour la Recherche Médicale
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
Keywords
glucose, pancreatic islets, cytosolic ATP, ATP/ADP ratio, mitochondrial ATP, digitonin, insulin secretion, energy metabolism
MeSH terms
Insulin Secretion, Adenosine Diphosphate, Adenosine Monophosphate, Adenosine Triphosphate, Animals, Cytosol, Digitonin, Glucose, Glutamate Dehydrogenase, Insulin, Ion Channels, Islets of Langerhans, L-Lactate Dehydrogenase, Mitochondria, Potassium, Rats

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