title: Automation of multiple sephadex LH-20 column chromatography for the simultaneous separation of plasma corticosteroids.
abstract: An automated method of Sephacex LH-20 chromatography has been developed for the simultaneous and complete separation of corticosterone, 11-deoxycortisol, aldosterone, cortisone and cortisol from a small plasma sample prior to radioimmunoassay. Using a controlled elution flow-rate of 40 ml/h and automated programme tape-controlled collection of the eluates from six columns eluted simultaneously, excellent reproducibility of elution patterns with minimal day-to-day and column-to-column variations could be achieved. The method can be easily extended and permits the reliable, rapid and easy routine separation of individual steroids from a single plasma or tissue extract on a multi-column scale.
mesh_terms: D000305:Adrenal Cortex Hormones / Q000097:blood* / Q000302:isolation & purification; D000450:Aldosterone / Q000097:blood; D001331:Automation; D002850:Chromatography, Gel; D003345:Corticosterone / Q000097:blood; D003348:Cortisone / Q000097:blood; D003350:Cortodoxone / Q000097:blood; D006854:Hydrocortisone / Q000097:blood
chemical_list: D000305:Adrenal Cortex Hormones; D000450:Aldosterone; D003348:Cortisone; D003345:Corticosterone; D003350:Cortodoxone; D006854:Hydrocortisone