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Annales d'Endocrinologie 1977

[Radioimmunoassay for human plasma 8-arginine-vasopressin (author's transl)].

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B Conte-Devolx
G Rougon-Rapuzzi
Y Millet

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Abstract

The authors have developed a radioimmunoassay for human plasma vasopressin (AVP) which permits the estimation of antidiuretic hormon (ADH) levels as low as 0,8 pg/ml. The average plasma level of AVP after overnight water restriction was found to be 14,3 pg/ml (sd = 4,4 pg/ml) in normal subjects. They provoked a hypersecretion of ADH by the intravenous injection of 1-2 mg of nicotine. In 11 volunteer normal subjects this stimulation by nicotine provoked ADH hypersecretion which reached a maximum between 2nd and 15th minutes after injection. In 3 cases of diabetes insipidus, nicotine injection did not induce ADH hypersecretion; in 1 case of potomania this response was weak; in 2 cases of syndrome of inappropriate ADH secretion, AVP plasma levels were elevated and the response after nicotine stimulation was exaggerated.

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