.... (C) Absolute adenine nucleotide concentration and (D) ATP/ADP ratio. (E) In vivo H 2 O 2 production measured by MitoP/B ratio. (F) Total aconitase activity as a measure of oxidative damage. Data are means±SEM, n =4. Significantly different P -values are shown; for statistical details, see...

... temperature and oxygen consumption but observed differentiated results for oxygen consumption during the day. Immune-challenged females had significantly higher oxygen consumption compared with other groups. Moreover, we found that activation of the humoral immune response increases oxidative damage...

..., indicating that short-term thermal transients are an important aspect of habitat quality for zebrafish. Mitochondria Temperature Reactive oxygen species Catalase Oxidative damage Respiratory control ratio Australian Research Council http://dx.doi.org/10.13039/501100000923 DP190101168...

... periods. We measured the activity of enzymatic antioxidants (glutathione peroxidase, superoxide dismutase and catalase), non-enzymatic antioxidant capacity (ORAC) and markers of oxidative damage (protein carbonyls and lipid hydroperoxides) in four tissues: pectoralis, leg muscle, liver and heart. Dietary...

...Michael W. Butler; Emma N. Stierhoff; Julianna M. Carpenetti; Matthew A. Bertone; Alyssa M. Addesso; Sarah A. Knutie ABSTRACT The purpose of mounting an immune response is to destroy pathogens, but this response comes at a physiological cost, including the generation of oxidative damage. However...

..., is accompanied by changes in oxidative status. We induced autumn migration followed by a non-migratory wintering phase in common quails ( Coturnix coturnix ). We compared three markers of oxidative status – oxidative damage to lipids expressed as thiobarbituric acid reactive substances (TBARS); superoxide...

... damage in some tissues. Telomeres, which are the terminal sequences of linear chromosomes, may shorten in the presence of ROS, and thus the telomere length of an individual reflects the degree of accrued oxidative damage. This study quantified telomere length dynamics throughout hibernation in arctic...

... to be determined by an interaction between SDH genotype and behavior (prolonged versus intermittent flight). Summary: Fritillary butterflies flying continuously for 3 min suffer oxidative damage to flight muscle lipids; damage varies with Sdhd genotype, but the effect differs for continuous flight versus...

... proteins, and antioxidants were higher in red-blooded fishes than in Hb-less icefishes in some tissues, this pattern did not persist across all tissues. Expression of Mb was not associated with oxidative damage in the heart ventricle, whereas the activity of citrate synthase and the contents of heme were...

... ( Vipera aspis ), a species naturally exposed to periods of water and food deprivation. We predicted a cumulative effect of pregnancy and dehydration on oxidative stress levels. Our results support the occurrence of an oxidative cost of reproduction as we found higher oxidative damage levels in pregnant...

... success or survival, but the physiological mechanisms underlying these costs are still obscure. To test for a role of oxidative stress, we measured oxidative damage to lipids and proteins in liver, heart, kidneys and muscles, as well as the level of antioxidants (total glutathione and catalase...

... predicted that males would experience greater oxidative stress than females and that oxidative stress would reflect sex-specific measures of reproductive effort. Males, relative to females, had higher concentrations of 8-OHdG and malondialdehyde, which are markers of DNA oxidative damage and lipid...

... in oxidative damage, an increase in ceruloplasmin (which is upregulated in response to oxidative damage) and a decrease in thiol antioxidants. We also compared the blood oxidative stress level of reproducing birds with that of non-reproducing birds, a crucial aspect that most studies have invariably failed...

... framework for abiotic factors influencing DGE is proposed in which the following stressors are prioritized in decreasing order of importance: oxygen supply, CO 2 excretion and pH modulation, oxidative damage protection and water savings. * Author for correspondence ( [email protected] ) Author...

...Laura A. Enzor; Sean P. Place Antarctic fish of the suborder Notothenioidei have evolved several unique adaptations to deal with subzero temperatures. However, these adaptations may come with physiological trade-offs, such as an increased susceptibility to oxidative damage. As such, the expected...

...Viviana Marri; Heinz Richner Oxidative stress is the imbalance between the production of reactive species and antioxidants, which causes damage to lipids, proteins and DNA. Antioxidants, like vitamins and carotenoids, can limit oxidative damage and can therefore regulate the trade-off between...

... bactericidal capacity and size of the thymus) were significantly suppressed, while some measures of oxidative protection [serum superoxide dismutase (SOD) activity and glutathione peroxidase (GPx) activity] were also reduced, and a marker of oxidative damage (protein carbonyls in serum) was increased...

... of oxidative damage to DNA bases and assessment of erythrocyte glutathione levels. * Author for correspondence ( [email protected] ) AUTHOR CONTRIBUTIONS P.H., R.M. and E.S. designed the study; R.M. and E.S. executed the experiment; R.M., E.S., K.K. and R.P. performed the analyses; and P.H. and R.M...

... No competing interests declared. 20 11 2012 28 2 2013 © 2013. Published by The Company of Biologists Ltd 2013 antioxidants birds flight effort oxidative damage vertebrates Understanding the physiological processes underlying variation in lifespan is of central importance...

... species (ROS) in disused muscles may lead to oxidative stress, which in turn is associated with increased atrophic or apoptotic signalling and/or oxidative damage to the muscle and thus muscle disuse atrophy. Increases in the rate of oxygen consumption likely increase the overall generation of ROS in vivo...