Abstract The current paper studies the dynamics and age of Triangle du Tacul (TDT) ice apron, a massive volume lying on steep high-mountain rock wall in French side Mont-Blanc massif at an altitude close to 3640 m a.s.l. Three 60 cm long cores were drilled bedrock (i.e. wall) 2018 2019 TDT apron. Texture (microstructure lattice-preferred orientation, LPO) analyses performed one core. two remain...

Hydrogen peroxide (H2O2) perfused into the aorta of the isolated rat heart induces a positive inotropic effect, with cardiac arrhythmia such as extrasystolic potentiation or cardiac contractures, depending on the dose. The last effect is similar to the "stone heart" observed in reperfusion injury and may be ascribed to lipoperoxidation (LPO) of the membrane lipids, to protein damage, to reducti...

Background: According to World Health Organization guideline (WHO 2010), seminal leukocyte concentration over 1×106/mL is a threat for sperm quality because of their role in reactive oxygen species (ROS) production, lipid per-oxidation (LPO) and later DNA fragmentation (DF). However, this threshold is equal for all semen samples without attention to their qualities. Therefore this study was set...

The objective of this study was to analyse the changes of inflammatory cytokines level in traumatic rat serum after maggot secretions intervention. Acute traumatic rats were randomly divided into three groups that included maggot secretions group, negative group, and the control group. TNF-α, IL-6, SOD, LPO levels were measured by radioimmunoassay. The experimental results showed that TNF-α, IL...

Oxidative stress is believed to initiate and aggravate many diseases including peptic ulcers and gastric carcinoma. We observed an increase in rat gastric mucosal lipid peroxidation (LPO) and superoxide dismutase (SOD) and a decrease in catalase (CAT) levels in cold restraint stress-induced gastric ulceration while, in clinical peptic ulceration and gastric carcinoma patients, an increase in se...

Lipid peroxidation (LPO) in cellular membranes is associated with changes in physicochemical properties and impairment of protein functions located in membrane environment. Recent studies shows involvement of LPO in biological signaling and various diseases. Lipids are oxidized by three distinct mechanisms: enzymatic oxidation; non-enzymatic, free radical-mediated oxidation and non-enzymatic, n...

We describe a method for the specific radioiodination of pinocytic vesicles (PVs) based upon the simultaneous endocytosis of lactoperoxidase (LPO) and glucose oxidase (GO). Initial experiments indicated that LPO was interiorized by the macrophage cell line J774 by fluid phase pinocytosis and without detectable binding to the plasma membrane (PM). Interiorization varied linearly with enzyme conc...