Pflügers Archiv

, Volume 309, Issue 2, pp 107–114 | Cite as

The assay of ACTH and the action of ACTH and steroids on corticosteroidogenesis in the mouse

  • Roy J. Purrott
  • Martin Sage


The optimum conditions are described for the assay of ACTH by its steroidogenic action on mouse adrenal glands. The index of precision averaged 0.10 and the assay can detect 1 imu ACTH/ml. High concentrations of β-oestradiol, testosterone, and corticosterone inhibited adrenal steroidogenesis acting at a site prior to the formation of pregnenolone. ACTH appeared to stimulate corticosteroidogenesis between cholesterol and pregnenolone. High concentrations of 3′5′ AMP also stimulated the glands. The specificity of the assay was good. Plasma slightly stimulated steroidogenesis other substances investigated had no effect at physiological concentrations.


ACTH Assay Adrenal 


Bestimmung Nebenniere 


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Copyright information

© Springer-Verlag 1969

Authors and Affiliations

  • Roy J. Purrott
    • 1
  • Martin Sage
    • 1
    • 2
  1. 1.Department of PhysiologyThe UniversityLeicesterEngland
  2. 2.Bodega Marine LaboratoryUniversity of CaliforniaBodega BayU.S.A.

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