title: Comparison of antioxidative/oxidative profiles in blood plasma of cows with and without retained fetal placental membranes.
abstract: Ante- and postpartum antioxidative/oxidative profiles in blood plasma of cows with and without retained placental membranes (RFM) were investigated. Twenty-two healthy pregnant cows were included in the study. Seven animals out of 22 suffered from RFM. Blood samples were obtained at 4, 3, 2, 1 weeks and 5 days antepartum (a.p.), at parturition and 1, 3, and 5 weeks postpartum. The following antioxidative parameters were measured using spectrophotometric methods: total antioxidant activity (TAC), β-carotene, vitamin A, vitamin C, and ceruloplasmin. The oxidative profile was based on the content of intermediates and end products of lipid and protein peroxidative processes which were measured by spectrophotometric and spectrofluorimetric methods. The examined parameters revealed a dynamic profile within the experimental period. The highest antioxidant and oxidant activity was noted at 2 and 1 week a.p. with a drop towards parturition suggesting the presence of oxidative stress during this time period and an apparent appropriate metabolic response of the macroorganism. Except for TAC and vitamin A, the contents of oxidative and antioxidative blood constituents did not differ between cows with and without RFM. A TAC and vitamin A by time interaction indicated higher antepartal concentrations of TAC and vitamin A in cows without RFM than in cows with RFM suggesting a possible role of antioxidative/oxidative imbalances in the aetiology of RFM.
authors.affiliation: Department of Animal Biochemistry and Physiology, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, Poland. marta.kankofer@up.lublin.pl
authors.forename: Marta
authors.initials: M
authors.lastname: Kankofer
authors.forename: Edyta
authors.initials: E
authors.lastname: Albera
authors.forename: Maren
authors.initials: M
authors.lastname: Feldman
authors.forename: Natascha
authors.initials: N
authors.lastname: Gundling
authors.forename: Martina
authors.initials: M
authors.lastname: Hoedemaker
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D001205:Ascorbic Acid / Q000097:blood; D002417:Cattle / Q000097:blood*; D002570:Ceruloplasmin / Q000378:metabolism; D005260:Female; D015227:Lipid Peroxidation; D018384:Oxidative Stress; D018457:Placenta, Retained / Q000097:blood / Q000378:metabolism / Q000662:veterinary*; D011247:Pregnancy; D014801:Vitamin A / Q000097:blood; D019207:beta Carotene / Q000097:blood
chemical_list: D000975:Antioxidants; D019207:beta Carotene; D014801:Vitamin A; D002570:Ceruloplasmin; D001205:Ascorbic Acid