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Relevant academic research and scientific papers

The design of multifunctional antioxidants against the damaging ingredients of oxidative stress

Oxidative stress is a biochemical condition associated with a sharp increase in intracellular concentrations of a range of oxidative stressors, including reactive oxygen species, reactive nitrogen species and labile metal ions. It is associated with a wide range of human disorders, such as inflammatory diseases, neurodegenerative diseases, glaucoma, and cancer. Equally importantly, oxidative stress is pronounced in older people, which makes it an important matter in an ageing Society. Not surprisingly, antioxidants have become a major focus of modern drug development. While natural antioxidants, such as phenolic aromatic compounds, vitamin C, vitamin E and curcumin have shown promising results, the development of effective synthetic antioxidants is often problematic. We have recently proposed the rational design of multifunctional antioxidants which target oxidative stressors in a more comprehensive manner. Such compounds may, for instance, combine catalytic sites with metal binding sites. Here we present the synthesis of representative molecules with combined catalytic and metal binding properties. The apparent 'antioxidant' activities have been studied in vitro and, for the most promising compound, have been confirmed in cultured skin cells exposed to UVA radiation.

Exploring synthetic avenues for the effective synthesis of selenium- and tellurium-containing multifunctional redox agents

Various human illnesses, including several types of cancer and infectious diseases, are related to changes in the cellular redox homeostasis. During the last decade, several approaches have been explored which employ such disturbed redox balances for the