Oxygen is essential to the life of the aerobic organisms, and most is used for the intracellular generation of energy, where several molecules are formed by partial reduction of oxygen. Because of its short half-life, low ...

Iron deficiency anemia is a frequent complication in clinical conditions such as chronic kidney disease, chronic heart failure, inflammatory bowel disease, cancer, and excessive blood loss. Given the ability of iron to ...

Peroxynitrite is a highly reactive nitrogen species and when it is generated at high levels it causes nitrosative stress, an important cause of impaired sperm function. High levels of peroxynitrite have been shown to ...

Iron can both induce and inhibit nitrosative stress. Intracellular iron levels play an important role in nitric oxide (NO•) signaling mechanisms. Depending on various factors, such as the cell's redox state and transition ...

Iron is involved in the formation as well as in the scavenging of reactive oxygen and nitrogen species. Thus, iron can induce as well as inhibit both oxidative and nitrosative stress. It also has a key role in reactive ...

Arsenic (As) is used in the treatment of leukaemia and breast cancer due to its strong oxidative cytotoxic action. However, it is also cytotoxic to normal cells. One proposed anticancer mechanism induced by As might be ...

Peroxynitrite is a highly reactive nitrogen species and a potent inducer of apoptosis and necrosis in somatic cells. Peroxynitrite-induced nitrosative stress has emerged as a major cause of impaired sperm function; however, ...