nonhuman Article 108 controlled study 96 oxidative stress 58 animal experiment 52 unclassified drug 52 male 49 Animals 45 animal model 45 animal 41 metabolism 40 human 39 animal tissue 38 rat 37 antioxidant activity 33 antioxidant 28 chemistry 28 plant extract 27 Male 25 mouse 25 Humans 24 nitric oxide 24 drug effect 22 protein expression 22 Rats 21 superoxide dismutase 21 animal cell 20 reactive oxygen metabolite 20 Antioxidants 19 malonaldehyde 18