...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...

... ) by examining covariation in VTG with the ovarian cycle, and relative to reactive oxygen species (ROS) including baseline superoxide (bSO). Plasma VTG decreased prior to ovulation, when VTG is deposited into follicles. VTG, however, remained elevated post-ovulation when no longer necessary for yolk provisioning...

...Kenneth R. Olson ABSTRACT The biological effects of oxidants, especially reactive oxygen species (ROS), include signaling functions (oxidative eustress), initiation of measures to reduce elevated ROS (oxidative stress), and a cascade of pathophysiological events that accompany excessive ROS...

...Gigi Y. Lau; Jeffrey G. Richards ABSTRACT Environmental hypoxia presents a metabolic challenge for animals because it inhibits mitochondrial respiration and can lead to the generation of reactive oxygen species (ROS). We investigated the interplay between O 2 use for aerobic respiration and ROS...

... prevents fatal respiratory distress in premature mice . Nat. Med.   8 , 702 - 710 . 10.1038/nm721 D'Autraux , B. and Toledano , M. B. ( 2007 ). ROS as signalling molecules: mechanisms that generate specificity in ROS homeostasis . Nat. Rev. Mol. Cell Biol.   8 , 813 . 10.1038...

... was enhanced by high-salt exposure in YSM tissue. Moreover, the reduction in expression of HIF2 and FGF2 genes might cause high-salt-suppressed angiogenesis. Interestingly, we show that high-salt exposure causes excess generation of reactive oxygen species (ROS) in the heart and YSM tissues, which could...

... acute thermal shifts. We measured the mitochondrial respiration rate ( V̇ O 2 ) through multiple complexes of the electron transport system following thermal acclimation (to 5, 15, 33°C) and assessed maintenance of mitochondrial membrane potential (Δ p ) and rates of reactive oxygen species (ROS...

... 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...

... ageing bivalves exercise ROS Ageing is a multifactorial process which involves progressive deterioration of cells, tissues and organs that altogether causes a decline in physiological functioning in the whole organism over their life time. A major paradigm of cellular aging holds the life long...

... that the reactivation of p44ERK during recovery also was dependent on reactive oxygen species and a PP1/PP2A-like phosphatase. p38 MAPK teleost ROS phosphatase PP1 PP2A calyculin A hypoxia recovery SB203580 Anoxia is a profound cellular stress factor with wide physiological implications...

... of membrane potential and radical production. Acclimatisation of lugworms to pre-spawning/summer conditions is associated with rising mitochondrial substrate oxidation rates, higher proton leakage rates, elevated membrane potentials, and increased production of reactive oxygen species (ROS)in isolated...