Glutathione S-transferases (GSTs) are involved in the metabolism of environmental carcinogens, reactive oxygen species, and chemotherapeutic agents by catalyzing reactions between glutathione and electrophilic compounds [ 21, 22].
Such observations may be justified once that the shift from a reactive environmental behavior towards a proactive managerial posture involves evolutionary stages.
NaCl treatment, like many environmental stresses, generates reactive oxygen species (ROS [ 33].
In addition to environmental sources, highly reactive endogenous unsaturated aldehydes (e.g., acrolein, HNE, and 4-oxo-2-nonenal) are generated during lipid peroxidation and subsequently mediate the cytotoxicity associated with oxidative stress injury.
In early pregnancy, decidual cells rapidly encapsulate the implanting embryo, allow invasion of fetal trophoblast, and protect the conceptus against environmental stressors, including reactive oxygen species (ROS; ref. 5).
Given the significance of the prefrontal cortex (PFC) functioning in yielding behavior that is strategically guided rather than reactive to environmental demands, it is important to examine the relationship between PFC functioning, neighborhood drug activity and substance use among African Americans residing in high risk communities.
However, cortisol levels are also the most reactive to environmental changes unrelated to sleep and daylight during the afternoon.
A study conducted at the Lyon Neuroscience Research Center in France supported this theory, concluding that "high dream recallers are more reactive to environmental stimuli [during sleep], awaken more during sleep, and thus better encode dreams in memory than low dream recallers".
During times of environmental stress, levels of reactive oxygen species can increase dramatically, which can damage cell structures and produce oxidative stress.
Furthermore, telomere erosion can occur due to environmental factors, especially ROS (reactive oxygen species).
