Aims: Oxidative stress is an imbalance in the pro-oxidant/antioxidant homeostasis, characterized by excess accumulation of reactive oxygen/nitrogen species (ROS/RNS) and free radicals that can be toxic for cells by initiating disruptive peroxidation reactions on cellular substrates such as proteins, lipids, and nucleic acids. Neurons have a high content of unsaturated fatty acids which are easily peroxidable by the elevated levels of ROS and RNS produced by brain oxygen metabolism, yielding isoprostanes among which 8-iso-PGF2α derived from arachidonic acid represents a stable marker of lipoperoxidation, in vivo . Numerous findings pointed to the protective role of natural products against oxidative stress in the brain. Methodology: In the present work we evaluated the effects of a natural formula containing bacopa extract, vitamin E, astaxanthin and phosphatidylserine on lipoperoxidation in rat brain cortex, both in vivo and in vitro . Results: The results demonstrate that the natural formula could reduce basal and Original Research Article European Journal of Medicinal Plants, 4(2): 171-182, 2014 172 hydrogen peroxide- and amyloid β peptide-induced oxidative stress, as evidenced by the reduction of 8-iso-PFG2α and ROS/RNS production in the rat brain. Conclusion: Results could account for a rational use of herbal products in the treatment of conditions characterized by increased burden of oxidative stress and defective antioxidant mechanisms, such as aging and neurodegenerative disorders.
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|Titolo:||A Natural Formulation Increases Brain Resistance to Oxidative Stress|
|Data di pubblicazione:||2014|
|Appare nelle tipologie:||1.1 Articolo in rivista|