Searchable abstracts of presentations at key conferences in endocrinology

ea0022p686 | Obesity | ECE2010

Increased oxidative damage to lipids and DNA in overweight and obese patients

Szosland Janusz , Kokoszko Agnieszka , Zasada Krzysztof , Stepniak Jan , Lewinski Andrzej , Karbownik-Lewinska Malgorzata

Introduction: Obesity does constitute one of the most common modifiable risk factors for cancer. The process of cancerogenesis is associated with the enhanced oxidative stress. Lipid peroxidation (LPO), resulting from oxidative damage to membrane lipids, as well as oxidative damage to DNA, are the most frequently examined processes to evaluate oxidative damage to macromolecules.Aim: The aim of the study was to evaluate the level of oxidative damage to me...

ea0016p366 | Growth factors | ECE2008

Effects of growth hormone and of insulin-like growth factor-I on iron-induced lipid peroxidation in rat liver and porcine thyroid homogenates

Kokoszko Agnieszka , Dabrowski Jan , Szosland Janusz , Lewinski Andrzej , Karbownik-Lewinska Malgorzata

Bivalent iron (Fe2+), which initiates the Fenton reaction (Fe2++H2O2+H+→Fe3++•OH+H2O), is frequently used to experimentally induce oxidative damage to macromolecules. Growth hormone (GH) and the main mediator of its action – insulin-like growth factor-I (IGF-I) – are involved in oxidative processes, lipid peroxidation (LPO) included.The aim of the...

ea0016p367 | Growth factors | ECE2008

Protective effects of growth hormone and of insulin-like growth factor-I against lipid peroxidation in iron sensitive rat tissue

Kokoszko Agnieszka , Dabrowski Jan , Szosland Janusz , Lewinski Andrzej , Karbownik-Lewinska Malgorzata

Iron participates in the Fenton reaction (Fe2++H2O2+H+→Fe3++•OH+H2O), the most basic reaction of oxidative stress. This transition metal is required to keep oxidative balance, although iron overload is associated with enhanced oxidative damage and cancer initiation. Growth hormone (GH) and insulin-like growth factor-I (IGF-I) are also involved in oxidative processes, lipid peroxidation incl...