[<sup>3</sup>H]Vasopressin binding to rat hippocampal synaptic plasma membrane
FEBS LettersPublished 17 October 1983Open access
Claude Barberis
Citations53
SJR quartileQ1
SJR score1.22
SNIP0.77
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TL;DR
AVP and Phe2Orn8VT are at least as active as AVP in inhibiting [3H]vasopressin binding, and Arginine‐vasoppressin has a high affinity and dDAVP has a low affinity for hippocampal synaptic membranes.
Abstract
Characterization of specific vasopressin binding sites to rat hippocampal membranes has been assayed using tritiated lysine-vasopressin labelled on the tyrosyl residue. At 30 degrees C specific [3H]vasopressin binding was saturable. The estimated equilibrium dissociation constant was 7.1 nM, the mean maximal binding capacity was 78 fmol/mg protein. Arginine-vasopressin has a high affinity (Kd = 2.8 nM) and dDAVP has a low affinity (Kd = 249 nM) for hippocampal synaptic membranes. (OH)AVP and Phe2Orn8VT are at least as active as AVP in inhibiting [3H]vasopressin binding. Adenylate cyclase was activated by VIP and inhibited by PIA, but not affected by lysine-vasopressin.
Keywords
PsychologyNeuroscienceBiochemistry, Genetics and Molecular Biology
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