title: A simple and convenient method for quantitation of corticosterone by high-performance liquid chromatography-ultraviolet detection.
abstract: This paper describes the quantitation of corticosterone in the rat serum and adrenal gland by high-performance liquid chromatography-Ultraviolet detection. The extraction and separation were optimized, resulting in an 80% recovery of corticosterone with a detection limit of 10 ng/ml serum. The separation was achieved in less than 5 min on a micro silica gel column using isocratic elution with hexane: chloroform: methanol (7:1:1, v/v) as the mobile phase. The levels of corticosterone in rat serum in the morning and the afternoon were 105.6 +/- 11.96 ng/ml (10:00 a.m., n = 28) and 174.8 +/- 17.60 ng/ml (17:00 p.m., n = 20), respectively. Because of its simplicity, this method provides a new promising analysis for determining hypothalamus-pituitary-adrenal function.
mesh_terms: D000311:Adrenal Glands / Q000032:analysis; D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003345:Corticosterone / Q000032:analysis* / Q000097:blood; D008297:Male; D011239:Prednisolone / Q000032:analysis; D051381:Rats; D011919:Rats, Inbred Strains; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D011239:Prednisolone; D003345:Corticosterone