title: Diurnal variation of plasma concentrations of cortisol, aldosterone and electrolytes in the ram.
abstract: The peripheral plasma concentrations of cortisol, aldosterone and electrolytes were measured simultaneously in 2 groups of 20 + 8 rams sampled respectively every 3 hours in June 1974 and hourly in June 1975 over a 24-hr period, in the Algiers area. In spite of large individual variations, the mean plasma concentrations of cortisol and aldosterone exhibited synchronous diurnal changes: they were highest in the morning, decreased during the afternoon until 18.00 h, and remained lowest during the first part of the night.
mesh_terms: D000450:Aldosterone / Q000097:blood*; D000818:Animals; D002940:Circadian Rhythm; D004573:Electrolytes / Q000097:blood*; D006854:Hydrocortisone / Q000097:blood*; D008297:Male; D011188:Potassium / Q000097:blood; D012756:Sheep / Q000097:blood*; D012964:Sodium / Q000097:blood
chemical_list: D004573:Electrolytes; D000450:Aldosterone; D012964:Sodium; D011188:Potassium; D006854:Hydrocortisone