... Hypoxia Oxidative stress Marine mammals Pinniped Brain Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659 Bu956/22 Lipids account for more than half of the dry weight of the human brain. However, their significance in cell metabolism has been underestimated...

..., post-natal THs, mitochondria and oxidative stress), telomere length and medium-term survival using wild great tits as a model system. While prenatal THs did not significantly affect telomere length a week after hatching (i.e. day 7), they influenced postnatal telomere shortening (i.e. shorter telomeres...

... physiology and oxidative stress have been implicated as important mediators of life-history trade-offs. The goal of this investigation was to uncover the physiological mechanisms responsible for the enhanced trade-off between self-maintenance and offspring investment when an animal is exposed to stressful...

... Oxidative stress National Science Foundation http://dx.doi.org/10.13039/100000001 IOS-1453784 IOS-1557724 OIA-1736150 Mitochondrial function is key to organismal performance and health ( Brand and Nicholls, 2011 ; Heine and Hood, 2020 ; Koch et al., 2021 ; Melvin and Ballard, 2006...

... for a slight increase in the OXPHOS state during post-hypoxic recovery. A decrease in NADH-driven respiration and ROS production, enhanced capacity for succinate oxidation and resistance to RET might assist in post-hypoxic recovery of oysters mitigating oxidative stress and supporting rapid ATP re-synthesis...

... phenomena in reciprocally transplanted land snail Helix lucorum at 0 and 1250 m altitudes underline phenotypic plasticity as a response to seasonal environmental changes in corresponding habitats. Species distribution Temperature variation Tissue-specific response Oxidative stress Vertical...

... antioxidant enzymes superoxide dismutase and catalase, while intermediate-laid eggs showed increased levels of lipid peroxidation. However, elevated yolk CORT did not affect oxidative stress endpoints in the brain. Our results indicate that elevated yolk CORT levels affect prenatal embryo development...

... there is more intense competition. Oxidative stress has been proposed as a potential cost of social dominance, but few studies have examined this cost in relation to social stability. We studied the cost of social dominance in the cichlid fish Astatotilapia burtoni by manipulating social stability among males...

..., and lipid peroxidation, the production of reactive aldehydes as a result of ROS (primarily the hydroxyl radical, HO • , and hydroperoxyl radical, HO • 2 ) attacking poly-unsaturated fatty acids, are commonly measured oxidative stress markers ( Barreiro and Hussain, 2010 ; Fedorova et al., 2014 ; Fritz...

... ). Acidification of subsurface coastal waters enhanced by eutrophication . Nat. Geosci. 4 , 766 - 770 . 10.1038/ngeo1297 Costantini , D. ( 2014 ). Oxidative Stress and Hormesis in Evolutionary Ecology and Physiology . Berlin and Heidelberg , Germany : Springer-Verlag . 978-3-642-54663-1...

... workload remain poorly understood. To examine how high workload affects haematology, oxidative stress and reproductive output, we experimentally manipulated foraging effort in captive zebra finches, Taeniopygia guttata , using a previously described technique, and allowed individuals to breed first in low...

... in oxidative status. Avian migration Refuelling Oxidative stress Oxidative damage Lipid peroxidation Enzymatic antioxidants The continuous consumption of oxygen as a result of aerobic metabolic processes leads to the production of reactive oxygen and nitrogen species (RONS) ( Halliwell...

... the significance of mitochondria in ROS production ( Chance et al., 1979 ). The role of mitochondria in cellular ROS production is further supported by the discovery of various mitochondria-targeted antioxidants. These compounds were found to be efficacious in treating a wide spectrum of oxidative stress-related...

... on the mitochondria of M. arenaria than chronic hypoxia and might lead to impaired ATP synthesis, higher costs of mitochondrial maintenance and oxidative stress. These changes might negatively affect populations of M. arenaria in the coastal Baltic Sea under increasing hypoxia pressure. * Author...

...Abigail R. Esquivel; Jenna C. Douglas; Rachel M. Loughran; Thomas E. Rezendes; Kaela R. Reed; Tobias H. L. Cains; Sarah A. Emsley; William A. Paddock; Patrick Videau; Marc J. Koyack; Brie E. Paddock ABSTRACT Oxidative stress, which occurs from an imbalance of reactive oxygen and nitrogen species...

... studies of physiological markers in an urban context have the potential to be highly valuable, their interpretation is not always straightforward. Take, for example, the two most commonly investigated aspects of physiology in an urban context – oxidative stress and the hypothalamic–pituitary–adrenal (HPA...

..., and then the two populations became geographically isolated. We found that, at the beginning of the experiment, Sardinian and Corsican frogs had similar concentrations of all oxidative status markers analysed. One year later, Corsican frogs had higher oxidative stress and suffered higher mortality than Sardinian...

... replicative potential, induce cell senescence and decrease fitness. Stress exposure, which elevates glucocorticoid hormone concentrations, can exacerbate telomere attrition. This phenomenon has been attributed to increased oxidative stress generated by glucocorticoids (‘oxidative stress hypothesis’). We...

... more oxidative stress damage and reduced capacity for antioxidant defense [lower catalase (CAT) activity]. We found no evidence that a higher susceptibility to oxidative stress contributes to female-biased mortality at warm temperatures. We did, however, find that females had significantly lower...

...Brittney G. Borowiec; Graham R. Scott ABSTRACT Hypoxia is common in aquatic environments, and exposure to hypoxia followed by re-oxygenation is often believed to induce oxidative stress. However, there have been relatively few studies of reactive oxygen species (ROS) homeostasis and oxidative...