Butylated hydroxyanisole is more than a reactive oxygen species scavenger

Pyrroloquinoline-quinone: a reactive oxygen species scavenger in bacteria.

Transgenic Escherichia coli expressing pyrroloquinoline-quinone (PQQ) synthase gene from Deinococcus radiodurans showed superior survival during Rose Bengal induced oxidative stress. Such cells showed significantly low levels of protein carbonylation as compared to non-transgenic control. In vitro, PQQ reacted with reactive oxygen species with rate constants comparable to other well known antio...

Mitochondrial reactive oxygen species and vascular function: less is more.

I-3: Reactive Oxygen Species: A Dilemma for

Spermatozoa are very special cells and constantly exposed to the interphase between oxidative stress through high amounts of reactive oxygen species (ROS) and leukocytes, and reduction by means of scavengers and antioxidants. Considering the very special functions of spermatozoa as being the only cells with such high polarization and exerting their functions outside the body, even in a differen...

Is oxygen more toxic than currently believed?

Scheele and Priestly discovered oxygen independently of each other in 1772 and 1774, respectively. It was quickly realized that this gas is not only life-giving but might be poisonous as well. However, what man has known for only 2 centuries nature itself has known for some 700 million years. One of the biggest leaps forward in evolution occurred when blue–green-like algae developed enzymes tha...

O 22: Reactive Oxygen Species and Epilepsy

Seizure activity has been proposed to result in the generation of reactive oxygen species (ROS), which then contribute to seizure-induced neuronal damage and eventually cell death. Although the mechanisms of seizure-induced ROS generation are unclear, mitochondria and cellular calcium overload have been proposed to have a crucial role. We aim to determine the sources of seizure-induced ROS and ...