title: The levels of lipid peroxidation products in bovine retained and not retained placenta.
abstract: Unsaturated fatty acids undergo peroxidation processes. The presence of elevated levels of metabolites of lipid peroxidation processes may cause alterations in metabolic pathways which may lead to disturbances and clinical symptoms of illnesses. One such illness may be retention of fetal membranes (RFM) in cows. The aim of the study was the determination of thiobarbituric acid (TBA) reactive substances, conjugated dienes and hydroperoxides in bovine retained and not retained placenta in order to describe the oxidative status of cows affected with RFM. Placental samples were collected immediately after spontaneous delivery or caesarian section before term and at term and divided into 6 groups, with 16 animals in each group, as follows: A) caesarian section before term without RFM: B) caesarian section before term with RFM: C) caesarian section at term without RFM: D) caesarian section at term with RFM: E) spontaneous delivery at term without RFM; F) spontaneous delivery with RFM. The levels of TBA reactive substances, conjugated dienes and hydroperoxides were measured spectrophotometrically. The levels of all parameters were statistically significantly higher in the maternal than in the fetal part of placenta and the lowest in preterm groups. Statistically significantly higher concentrations in retained placenta samples than in control animals were observed. In conclusion, the metabolites of lipid peroxidation processes are elevated in cases of retained placenta and their presence might influence directly and/or indirectly the improper release of fetal membranes in cows.
authors.affiliation: Department of Biochemistry, Faculty of Veterinary Medicine, Agricultural University, 20-123 Lublin, ul.Lubartowska 58a, Poland. kankofer@agros.ar.lublin.pl
authors.forename: M
authors.initials: M
authors.lastname: Kankofer
mesh_terms: D000466:Alkadienes / Q000378:metabolism; D000818:Animals; D002417:Cattle; D005260:Female; D015227:Lipid Peroxidation / Q000502:physiology*; D018384:Oxidative Stress / Q000502:physiology; D010545:Peroxides / Q000378:metabolism; D010920:Placenta / Q000737:chemistry*; D018457:Placenta, Retained / Q000378:metabolism*; D011247:Pregnancy; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
chemical_list: D000466:Alkadienes; D010545:Peroxides; D017392:Thiobarbituric Acid Reactive Substances