Cited by 40Neuroendocrine regulation and behaviorElectrolyte and hormonal disordersNeuropeptides and Animal Physiology

Simultaneous radioimmunoassay for plasma arginine-vasopressin and oxytocin using DEAE Sephadex A 25 extraction

Chiodera, Paolo, Louis, F., Legros, J. J.·1984·Journal of Endocrinological Investigation

Abstract

A sensitive and specific radioimmunoassay method for simultaneous measurement of plasma arginine vasopressin (AVP) and oxytocin (OT) has been developed utilizing an extraction technique on DEAE Sephadex A25. This procedure resulted in mean recoveries of 70.7% (AVP) and 65.4% (OT) in the peptide range of 5 to 100 pg/4 ml. The sensitivity of the assay is 0.5 pg/tube for AVP and 2 pg/tube for OT. The lower limit of detection for plasma extracts was 1.2 pg AVP/ml and 5 pg OT/ml plasma. Employing this method in normal human non smokers and ad libitum fluid the basal levels (mean +/- SE) of plasma AVP are 3.5 +/- 0.2 pg/ml in males and 4.6 +/- 0.4 pg/ml in females and the basal concentrations of plasma OT are 5.1 +/- 0.3 pg/ml in males and 5.4 +/- 0.3 pg/ml in females. Dehydration and water loading produced significant changes in plasma AVP and OT concentrations and a significant correlation exists between plasma AVP and plasma (r = 0.96, p less than 0.001) and urinary (r = 0.84, p less than 0.01) osmolality, but not between plasma OT concentrations and plasma (r = 0.11, NS) and urinary (r = 0.27, NS) osmolality. These results suggest that a wide range of physiological and pathophysiological changes in plasma AVP and OT can be simultaneously measured by the extraction procedure and the radioimmunoassay described.

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Crossref · 10.1007/bf03351004

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  • By the 1980s, many laboratories had generated radioimmunoassays for oxytocin using independently produced antibodies, and most but not all required extraction.

    “By the 1980s, many laboratories had generated radioimmunoassays for oxytocin, using independently produced antibodies 58, 72, 73, 74, 94, 95, 96, 97, 98] and most, but not all 99, 100, required extraction.”

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Authors
Chiodera, P., Louis, F., & Legros, J. J.
Affiliations
  • University of Parma (IT)
  • University of Liège (BE)
Venue
Journal of Endocrinological Investigation
Published
1984-08
Volume
7
Issue
4
Pages
287-293
ISSN
  • 0391-4097 (ISSN-L)
  • 1720-8386
OpenAlex
W2024542663
Cited by
40
References
22
Citations by year
2023: 1 · 2018: 1 · 2016: 1
FWCI
3.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Endocrinological Investigation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Electrolyte and hormonal disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
vasopressin, oxytocin, plasma hormone measurement, dehydration, water loading, urine osmolality
MeSH terms
Adult, Arginine Vasopressin, Chromatography, Ion Exchange, Dehydration, Female, Humans, Male, Osmolar Concentration, Oxytocin, Radioimmunoassay, Urine

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