[Frontiers in Bioscience 17, 2396-2418, June 1, 2012]
The effects of dietary flavonoids on the regulation of redox inflammatory networks
Valerio Izzi1, Laura Masuelli2, Ilaria Tresoldi3, Pamela Sacchetti2, Andrea Modesti1, Fabio Galvano4, Roberto Bei1
1Department of Experimental Medicine and Biochemical Sciences, University of Rome Tor Vergata, Rome, Italy, 2Department of Experimental Medicine, University of Rome Sapienza, Rome, Italy, 3Department of Public Health and Cell Biology, University of Rome Tor Vergata, Rome, Italy, 4Department of Drug Science, University of Catania, Catania, Italy
TABLE OF CONTENTS
Dietary flavonoids are a large family of polyphenols ubiquitously expressed in plants. Recent evidence show that flavonoids possess several anti-inflammatory activities due to their ability to scavenge reactive oxygen and nitrogen species (ROS and RNS), to inhibit the pro-inflammatory activity of ROS-generating enzymes including cyclooxygenase (COX), lipoxygenase (LOX) and inducible nitric oxide synthase (iNOS) and to modulate different intracellular signaling pathways from NF-kB to mitogen-activated protein kinases (MAPKs) through perturbation of redox-sensible networks in immune cells. This report will review current knowledge on the anti-inflammatory effects of flavonoids on immune cells focusing on their ability to modulate multiple redox-sensible pathways involved in inflammation.