... to NH 4 Cl (5 mmol l −1 ) led to a significant increase in intracellular ammonia concentration with a sharp rise of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA) concentrations within 3 h in primary hepatocytes, which decreased gradually at later stages of treatment. This phenomenon...

... model of mitochondrial ROS metabolism, where integration of ROS production with consumption by the mitochondrial antioxidant pathways may lead to the regulation of ROS levels. Superoxide and hydrogen peroxide (H 2 O 2 ) are the main ROS formed by mitochondria. However, superoxide, a free radical...

...Ashley E. M. Miller; Andreas Heyland SUMMARY Iodine has many important biological functions and its concentrations vary with the environment. Recent research has provided novel insights into iodine uptake mechanisms in marine bacteria and kelp through hydrogen peroxide-dependent diffusion (PDD...

... divers. In conclusion, Mb concentration rather than specific functional reactivities may support whale diving performance. * Author for correspondence ( [email protected] ) 11 4 2012 6 6 2012 © 2012. 2012 oxygen binding nitrite reductase hydrogen peroxide...

... diapause terminates and embryos resume development. The regulation of diapause termination and post-diapause development is poorly understood at the molecular level, prompting this study on the capacity of hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO) to control these processes. Exposure to H 2 O 2...

.... * Author for correspondence (e-mail: [email protected] ) 25 9 2006 © The Company of Biologists Limited 2006 2006 haemocyte mollusc defence PKC ERK hydrogen peroxide reactive oxygen species In invertebrates, innate immunity is crucial to defence against invading...

.... In marine organisms, reactive oxygen species (ROS), such as the superoxide anion and hydrogen peroxide, are generated within respiring cells and tissues and also by photochemical processes in sea water. Considering both the reduced metabolic rate of nektonic organisms thriving in the deep sea...