title: Bioavailability of glycitein relatively to other soy isoflavones in healthy young Caucasian men.
abstract: Glycitein is a Selective Estradiol Receptor Modulator (SERM) from soy. The study reports plasma bioavailability and urine excretion of glycitein compared to other soy isoflavones after a unique intake of food supplement based on soy germ containing 55.24mg isoflavones. Eighteen plasma and urinary sampling profiles collected over 48h from healthy young Caucasian men were analysed using specific ELISAs. Eight profiles contained equol. Glycitein T(max), C(max), AUC(0→24h) and T(½) in plasma were calculated. Urine T(max), % of excretion at 24h and clearance were assessed. Glycitein is one of the best absorbed flavonoids. Plasma steady-state level can be achieved by several intakes a day. Glycitein bioavailability is similar to that of daidzein and its urinary excretion is significantly higher than that of genistein. Equol does not affect glycitein bioavailability. Knowing glycitein bioavailability in man is essential for the development of soy-germ-based food supplements for health applications.
authors.affiliation: Univ. Bordeaux, Neurocentre Magendie, Physiopathologie de la plasticité neuronale, U862, F-33000 Bordeaux, France.
authors.forename: Svitlana
authors.initials: S
authors.lastname: Shinkaruk
authors.forename: Marlène
authors.initials: M
authors.lastname: Durand
authors.forename: Valérie
authors.initials: V
authors.lastname: Lamothe
authors.forename: Allison
authors.initials: A
authors.lastname: Carpaye
authors.forename: Amandine
authors.initials: A
authors.lastname: Martinet
authors.forename: Philippe
authors.initials: P
authors.lastname: Chantre
authors.forename: Sébastien
authors.initials: S
authors.lastname: Vergne
authors.forename: Xavier
authors.initials: X
authors.lastname: Nogues
authors.forename: Nicholas
authors.initials: N
authors.lastname: Moore
authors.forename: Catherine
authors.initials: C
authors.lastname: Bennetau-Pelissero
mesh_terms: D000328:Adult; D001682:Biological Availability; D019587:Dietary Supplements / Q000032:analysis; D005260:Female; D005602:France; D006801:Humans; D007529:Isoflavones / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D008297:Male; D045730:Soy Foods / Q000032:analysis*; D013025:Glycine max / Q000378:metabolism*; D044465:White People; D055815:Young Adult
chemical_list: D007529:Isoflavones; C086566:glycitein