title: Rhythms in the ovulatory cycle. 1st: Prolactin. Chronobiological Research Group on Synthetic Peptides in Medicine.
abstract: Circadian and circatrigintan profiles of prolactin (PRL) in young normally cycling women at 4 well characterized times of the ovulatory cycle have been compared. Circadian patterns of PRL (collected at 2-h intervals for 24h at each phase selected) change during the 4 phases, being higher in the luteal phase. In a consistent percentage of individuals, serum PRL rises notably during the night; in one half of the subjects a peak is located also in the afternoon or early evening. The statistically significant circatrigintan rhythm of PRL shows the acrophase approximately in the mid-luteal phase.
authors.affiliation: Cattedra di Cronobiologia, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Carandente
authors.forename: A
authors.initials: A
authors.lastname: Angeli
authors.forename: G B
authors.initials: GB
authors.lastname: Candiani
authors.forename: P G
authors.initials: PG
authors.lastname: Crosignani
authors.forename: F
authors.initials: F
authors.lastname: Dammacco
authors.forename: L
authors.initials: L
authors.lastname: De Cecco
authors.forename: P
authors.initials: P
authors.lastname: Marrama
authors.forename: M
authors.initials: M
authors.lastname: Massobrio
authors.forename: L
authors.initials: L
authors.lastname: Martini
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008597:Menstrual Cycle; D010060:Ovulation; D010507:Periodicity; D011388:Prolactin / Q000097:blood*
chemical_list: D011388:Prolactin