title: Diurnal and seasonal changes in endogenous melatonin levels in the blood plasma in dogs.
abstract: This paper describes research on the levels of endogenous melatonin (MLT) in the blood serum in dogs in different seasons (March, June, September, December) and at different times of day (11:00, 12:00, 23:00, 24:00 and 1:00), using immunoassay method. Blood samples were collected in the diurnal cycle, in consecutive seasons. The conducted studies show that MLT levels undergo clear changes in both the diurnal cycle, as well as in seasonal one in this species.
authors.affiliation: Department of Pharmacology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland. rafal.zan@up.lublin.pl
authors.forename: R S
authors.initials: RS
authors.lastname: Zań
authors.affiliation: Department of Pharmacology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland.
authors.forename: Z
authors.initials: Z
authors.lastname: Roliński
authors.affiliation: Department of Pharmacology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland.
authors.forename: C J
authors.initials: CJ
authors.lastname: Kowalski
authors.affiliation: Department of Clinical Immunology, Medical University in Lublin, Chodiki 4a, 20-093 Lublin, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Bojarska-Junak
authors.affiliation: Department and Clinic of Internal Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Gleboka 30, 20-612 Lublin, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Madany
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology*; D004285:Dogs / Q000097:blood* / Q000502:physiology*; D008550:Melatonin / Q000097:blood*; D012621:Seasons
chemical_list: D008550:Melatonin