Short Half-times of Caesium-137 in Pregnant Women

BENGTSSON et al. 1 reported a patient with a shorter biological half-time for caesium during pregnancy than afterward. Prompted by this finding, and by the marked individual variation in body burden 2 and biological half-time 3 seen in our own studies, we evaluated the equivalent biological half-tim...

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Bibliographic Details
Published in:Nature (London) 1969-01, Vol.221 (5175), p.89-90
Main Authors: ZUNDEL, WAYNE S, TYLER, FRANK H, MAYS, CHARLES W, LLOYD, RAY D, WAGNER, WILLIAM W, PENDLETON, ROBERT C
Format: Article
Language:English
Subjects:
Adolescent
Adult
Cesium Isotopes - metabolism
Cesium Isotopes - urine
Ethinyl Estradiol - pharmacology
Female
Glomerular Filtration Rate
Humanities and Social Sciences
Humans
Kidney - physiology
letter
multidisciplinary
Pregnancy
Progesterone - pharmacology
Science
Science (multidisciplinary)
Time Factors
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Summary:BENGTSSON et al. 1 reported a patient with a shorter biological half-time for caesium during pregnancy than afterward. Prompted by this finding, and by the marked individual variation in body burden 2 and biological half-time 3 seen in our own studies, we evaluated the equivalent biological half-times in twenty-four pregnant women while the environmental levels of fall-out caesium-137 were still sufficiently high that artificial administration of radioactivity was not required. The equivalent biological half-time is defined as 0.693 times (observed body content/observed excretion rate). Our technique has been described previously 4 .
ISSN:0028-0836
1476-4687
DOI:10.1038/221089b0