title: Chronomics reveal and quantify circadian rhythmic melatonin in duodenum of rats.
abstract: A circadian rhythm is documented in duodenal melatonin in rats, peaking 16.8 hours after light onset. This component is more readily detected after log10-transformation of the data. It differs between male and female rats, females having a larger circadian amplitude and an earlier acrophase. The circadian rhythm in duodenal melatonin is also found to lead that of pineal melatonin. The results are qualified by the presence at the start of mapping of the second extremum of a double magnetic storm.
authors.affiliation: Comenius University, Bratislava, Slovakia.
authors.forename: K
authors.initials: K
authors.lastname: Stebelova
authors.forename: M
authors.initials: M
authors.lastname: Zeman
authors.forename: G
authors.initials: G
authors.lastname: Cornélissen
authors.forename: G
authors.initials: G
authors.lastname: Bubenik
authors.forename: R
authors.initials: R
authors.lastname: Jozsa
authors.forename: R
authors.initials: R
authors.lastname: Hardeland
authors.forename: B
authors.initials: B
authors.lastname: Poeggeler
authors.forename: G
authors.initials: G
authors.lastname: Huether
authors.forename: A
authors.initials: A
authors.lastname: Olah
authors.forename: G
authors.initials: G
authors.lastname: Nagy
authors.forename: V
authors.initials: V
authors.lastname: Csernus
authors.forename: J
authors.initials: J
authors.lastname: Kazsaki
authors.forename: W
authors.initials: W
authors.lastname: Pan
authors.forename: K
authors.initials: K
authors.lastname: Otsuka
authors.forename: E E
authors.initials: EE
authors.lastname: Bakken
authors.forename: F
authors.initials: F
authors.lastname: Halberg
mesh_terms: D000818:Animals; D002909:Chronobiology Phenomena; D002940:Circadian Rhythm / Q000502:physiology*; D004386:Duodenum / Q000378:metabolism*; D005260:Female; D008027:Light; D008297:Male; D008550:Melatonin / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar; D012737:Sex Factors; D019445:Solar Activity
chemical_list: D008550:Melatonin