Cited by 40Neuroendocrine regulation and behaviorNeuropeptides and Animal PhysiologyCardiovascular, Neuropeptides, and Oxidative Stress Research

Binding of [3H] SR 49059, a potent nonpeptide vasopressin V1a antagonist, to rat and human liver membranes

Serradeillegal, C., Raufaste, D., Marty, E., Garcia, C., Maffrand, J.P., Lefur, G.·1994·Biochemical and Biophysical Research Communications

Abstract

The new potent and selective nonpeptide vasopressin V1a antagonist, SR 49059, was tritiated and used for the characterization of rat and human liver AVP V1a receptors. Binding of [3H] SR 49059 was time-dependent, reversible and saturable. A single class of high affinity binding sites was identified with Kd values of 0.63 +/- 0.13 and 2.95 +/- 0.64 nM, in rat and human liver membranes, respectively. The maximal binding capacity (Bmax) was about 7 times higher in rat than in human liver preparations. The relative potencies of several AVP/oxytocin agonists or antagonists to inhibit [3H] SR 49059 binding confirmed that this ligand labeled a homogeneous population of sites with the expected AVP V1a profile. Furthermore, [3H] SR 49059 or unlabeled SR 49059 displayed only slight species differences between rat and human V1a receptors, whereas OPC-21268, another nonpeptide V1a antagonist, exhibited a high species-related potency with more than 500 fold higher affinity for rat than for human liver V1a receptors. Thus, [3H] SR 49059 is the first nonpeptide AVP V1a ligand reported having highly specific activity, stability, specificity and affinity. This makes it a suitable probe for labeling AVP V1a receptors in rat and also in human tissues.

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Crossref · 10.1006/bbrc.1994.1236

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  • Vasopressin transiently increases glycemia in healthy humans.

    “A causal link between vasopressin and glucose homeostasis is plausible because vasopressin induces gluconeogenesis in the rat liver and transiently increases glycemia in healthy humans and because vasopressin receptors are expressed in hepatocytes and pancreatic islets (2–9).”

    From Low Water Intake and Risk for New-Onset Hyperglycemia (2011) · cites this paper as [7]

  • A causal link between vasopressin and glucose homeostasis is plausible.

    “A causal link between vasopressin and glucose homeostasis is plausible because vasopressin induces gluconeogenesis in the rat liver and transiently increases glycemia in healthy humans and because vasopressin receptors are expressed in hepatocytes and pancreatic islets (2–9).”

    From Low Water Intake and Risk for New-Onset Hyperglycemia (2011) · cites this paper as [7]

  • Vasopressin receptors are expressed in hepatocytes and pancreatic islets.

    “A causal link between vasopressin and glucose homeostasis is plausible because vasopressin induces gluconeogenesis in the rat liver and transiently increases glycemia in healthy humans and because vasopressin receptors are expressed in hepatocytes and pancreatic islets (2–9).”

    From Low Water Intake and Risk for New-Onset Hyperglycemia (2011) · cites this paper as [7]

  • Vasopressin induces gluconeogenesis in the rat liver.

    “A causal link between vasopressin and glucose homeostasis is plausible because vasopressin induces gluconeogenesis in the rat liver and transiently increases glycemia in healthy humans and because vasopressin receptors are expressed in hepatocytes and pancreatic islets (2–9).”

    From Low Water Intake and Risk for New-Onset Hyperglycemia (2011) · cites this paper as [7]

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Authors
Serradeillegal, C., Raufaste, D., Marty, E., Garcia, C., Maffrand, J. P., & Lefur, G.
Affiliations
Sanofi (France) (FR)
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
1994-02
Volume
199
Issue
1
Pages
353-360
ISSN
0006-291X (ISSN-L)
OpenAlex
W1995247367
Cited by
40
References
0
Citations by year
2025: 1 · 2023: 2 · 2019: 2 · 2015: 1 · 2013: 1 · 2012: 2
FWCI
9.17
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Surgery › Cardiovascular, Neuropeptides, and Oxidative Stress Research
Keywords
vasopressin V1a receptor, non-peptide antagonists, radioligand binding, liver membranes, receptor binding affinity, species differences, OPC-21268, oxytocin receptor
MeSH terms
Animals, Arginine Vasopressin, Binding, Competitive, Cell Membrane, Humans, Indoles, Kinetics, Liver, Male, Pyrrolidines, Rats, Sprague-Dawley, Receptors, Vasopressin, Rats

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