ArticleThe Biochemical journal1993
Evidence that stimulation of plasma-membrane Ca2+ inflow is an early action of glucagon and dibutyryl cyclic AMP in rat hepatocytes.
Article in The Biochemical journal, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed, 29 citations in OpenAlex.
- Targeting hepatic glutaminase activity to ameliorate hyperglycemia.Nature medicine · 2018Article
- Calcium-mediated signaling and calmodulin-dependent kinase regulate hepatocyte-inducible nitric oxide synthase expression.The Journal of surgical research · 2015Article
- Article
- Histamine-induced Ca2+ entry precedes Ca2+ mobilization in bovine adrenal chromaffin cells.The Biochemical journal · 1994Article
- Elevated intracellular cyclic AMP exerts different modulatory effects on cytosolic free Ca2+ oscillations induced by ADP and ATP in single rat hepatocytes.The Biochemical journal · 1994Article
- Calcium: its modulation in liver by cross-talk between the actions of glucagon and calcium-mobilizing agonists.The Biochemical journal · 1993Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The ability of glucagon (1 nM) and of dibutyryl cyclic AMP (50 microM) to increase cytosolic free Ca2+ concentration ([Ca2+]i) in Fura-loaded rat hepatocytes was examined in a system wherein Ca2+ inflow was induced by the re-admission of excess Ca2+ to a nominally Ca(2+)-free medium. An increase in [Ca2+]i did not occur in the absence of either agonist, but did so after co-addition of either agonist with Ca2+. Increasing the time between addition of dibutyryl cyclic AMP (or of glucagon) and Ca2+ led to increases in [Ca2+]i; half-maximal and maximal increases were observed at 0 s (i.e. at co-addition) and 5-7 s respectively. Dibutyryl cyclic AMP and Ca2+ each exhibited a concentration-dependence when their respective concentrations were changed for a fixed time interval between additions. Half-maximal and maximal effects were obtained with 30 microM and 50 microM dibutyryl cyclic AMP and with 0.5 mM and approx. 1 mM Ca2+ respectively. The data demonstrate an early action of glucagon and dibutyryl cyclic AMP on [Ca2+]i. It is argued that the agonist-induced rise in [Ca2+]i results from an increase in plasma-membrane Ca2+ inflow, an effect that appears to occur much earlier than that on mobilization of internal stores of Ca2+.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.