rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
|
pubmed:dateCreated |
1981-7-9
|
pubmed:abstractText |
The role of Ca2+ in the regulation of insulin secretion was evaluated using beta-cell-rich pancreatic islets isolated from ob/ob-mice. The glucose stimulation of the secretory activity is supposed to result from accumulation of Ca2+ in the submembrane cytoplasmic space. It is likely that this process reflects the balance between increased entry of Ca2+ into the beta-cells and an enhanced sequestration of Ca2+ in the organelle sinks. The proposed model can explain the cAMP potentiation of glucose-stimulated insulin release with suppression of the mitochondrial Ca2+ uptake. Furthermore, differences in the Ca2+ buffering capacity of the secretory granules may account for other characteristic features of glucose-stimulated insulin release, in particular its biphasic nature and sensitivity to suppression on withdrawal of nutrients.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:issn |
0300-9734
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
85
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
321-9
|
pubmed:dateRevised |
2011-11-17
|
pubmed:meshHeading |
pubmed-meshheading:6262985-Adenosine Triphosphate,
pubmed-meshheading:6262985-Animals,
pubmed-meshheading:6262985-Blood Glucose,
pubmed-meshheading:6262985-Calcium,
pubmed-meshheading:6262985-Cyclic AMP,
pubmed-meshheading:6262985-Cytoplasmic Granules,
pubmed-meshheading:6262985-Insulin,
pubmed-meshheading:6262985-Ion Channels,
pubmed-meshheading:6262985-Islets of Langerhans,
pubmed-meshheading:6262985-Membrane Potentials,
pubmed-meshheading:6262985-Mice,
pubmed-meshheading:6262985-Mitochondria,
pubmed-meshheading:6262985-Secretory Rate,
pubmed-meshheading:6262985-Subcellular Fractions
|
pubmed:year |
1980
|
pubmed:articleTitle |
Ca2+ transport in pancreatic beta-cells during glucose stimulation of insulin secretion.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|