THE DEVELOPMENT OF A RADIOIMMUNOASSAY FOR OXYTOCIN: RADIO-IODINATION, ANTIBODY PRODUCTION AND SEPARATION TECHNIQUES
Abstract
SUMMARY: A simple and rapid method is described for labelling oxytocin with 131I at a high specific activity. This method is compared with those of previous workers. A satisfactory antiserum has been raised by direct intra-lymph node injection of oxytocin adsorbed to carbon microparticles. A number of methods for separating antibody-bound from free oxytocin are described, and reasons given for preferring a procedure using ammonium sulphate precipitation. These data form the basis for developing a radioimmunoassay intended for the determination of oxytocin in human plasma.
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The human posterior pituitary contains approximately 21 μg of oxytocin, whereas that of the rat contains 0.5-1 μg.
“the human posterior pituitary contains approximately 21 μg of oxytocin 72, 73, 74, whereas that of the rat contains 0.5–1 μg.”
From Measuring Oxytocin and Vasopressin: Bioassays, Immunoassays and Random Numbers (2016) · cites this paper as [74]
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.”
From Measuring Oxytocin and Vasopressin: Bioassays, Immunoassays and Random Numbers (2016) · cites this paper as [74]
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- Authors
- CHARD, T., KITAU, M. J., & LANDON, J.
- Venue
- Journal of Endocrinology
- Publisher
- Bioscientifica
- Published
- 1970-02-01
- Volume
- 46
- Issue
- 2
- Pages
- 269-278
- ISSN
- 0022-0795 (ISSN-L)
- 1479-6805
- OpenAlex
- W2031531128
- Cited by
- 45
- References
- 0
- Citations by year
- 2016: 1
- FWCI
- 11.36
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Endocrinology (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 › Radiology, Nuclear Medicine and Imaging › Radiopharmaceutical Chemistry and Applications
- Keywords
- oxytocin, radioimmunoassay, iodine-131 labeling, radioiodination, antiserum production, lymph node injection, antibody separation, ammonium sulfate precipitation
- MeSH terms
- Adsorption, Quaternary Ammonium Compounds, Animals, Antibody Formation, Antigen-Antibody Complex, Carbon, Female, Humans, Injections, Intralymphatic, Iodine Isotopes, Lymph Nodes, Methods, Oxytocin, Chemical Precipitation, Rabbits, Radioimmunoassay, Sulfates
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