Diarrhea pathophysiology and constipation are multifactorial gastrointestinal (GI) disorders characterized by intestinal peristalsis disruption of and an irregularity in secretion/absorption process. Oxidative stress, as an imbalance in prooxidants/antioxidants, has recently been recognized as a significant player in these GI disturbances. In this respect, numerous studies were performed and have shown that the deleterious effects on GI tract were accompanied by accumulation of oxidants and depletion of antioxidant system. Antioxidant remedy is necessary in scavenging free radicals and reactive oxygen species preventing oxidative stress-induced GI interruptions.
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