Cited by 33Electrolyte and hormonal disordersNeuroendocrine regulation and behaviorNeuropeptides and Animal Physiology

A method for assaying small amounts of antidiuretic substances with notes on some properties of vasopressin

Dettelbach, Harold R.·1958·American Journal of Physiology-Legacy Content

Abstract

An intravenous method of high precision for bioassay of antidiuretic substances at low concentrations is described. Sensitivity is high and occurrence of nonspecific antidiuresis is largely avoided. It uses the rat, maintained under constant water load and ethanol anesthesia. Antidiuretic activity of commercial vasopressin in solution, studied under varying conditions of temperature and pH, withstood short boiling at any pH but was reduced after longer boiling, especially in alkaline solutions. Loss of pressor activity did not parallel that of antidiuretic activity at all pH levels. Vasopressin solutions lyophilized or frozen for long periods lost no antidiuretic activity. There was appreciable loss of activity on standing at room temperature for 72 hours. Plasma samples containing vasopressin may be acidified, boiled and centrifuged while the antidiuretic activity remains intact in the supernatant fluid.

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Crossref · 10.1152/ajplegacy.1958.192.2.379

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Authors
Dettelbach, H. R.
Affiliations
From the Division of Biological Research, G. D. Searle & Company, Chicago, Illinois
Corresponding author
Dettelbach, Harold R.
Venue
American Journal of Physiology-Legacy Content
Published
1958-01-31
Volume
192
Issue
2
Pages
379-386
ISSN
0002-9513 (ISSN-L)
OpenAlex
W2264868047
Cited by
33
References
0
Citations by year
2016: 1 · 2015: 1
FWCI
6.59
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Legacy Content (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Electrolyte and hormonal disorders
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
vasopressin, bioassay, antidiuretic activity, pressor activity, pH and temperature effects, thermal stability, freeze-drying, plasma samples, water load
MeSH terms
Arginine Vasopressin, Biological Assay, Humans, Vasopressins

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