Author(s)

D. Chen¹, Y. Zhou¹, K. E. Lyons², R. Pahwa², M. B. Reddy^1*

¹Department of Food Science and Human Nutrition, Iowa State University, Ames, USA.
²Department of Neurology, University of Kansas Medical Center, Kansas City, USA.

Oxidative stress is one of the underlying causes of Parkinson’s disease (PD). Because of its antioxidant effect, we hypothesize that green tea consumption (3 cups daily for 3 months) would improve antioxidant status and reduces oxidative damage in Parkinson’s disease. Fifteen subjects who were within the first five years of PD, on stable PD medication, and not regular green tea consumers were recruited. Iron status, oxidative stress and PD status were evaluated before and after 3 months of green tea consumption. Hemoglobin, serum iron, iron saturation and ferritin concentrations were used to assess iron status. Antioxidant enzymes including catalase, superoxide dismutase (SOD), and glutathione peroxidase (GPx) were measured to determine antioxidant status. Lipid peroxidation and protein carbonyls were measured as oxidative damage markers. There were no changes in total motor scores of the Unified Parkinson’s Disease Rating Scale (UPDRS), PDQ-39 total scores and various iron status markers after 3 months. Catalase (p < 0.05) and SOD activities (p < 0.005) were increased significantly indicating an improvement of antioxidant status. Both lipid peroxidation and protein carbonyls decreased by ~52% (p < 0.01) with green tea consumption, indicating less oxidative stress. In conclusion, 3 cups of green tea consumption for 3 months can improve antioxidant status and reduce oxidative damage in PD patients. Further studies are needed to determine if these changes result in slowing the disease progression.

Parkinson’s Disease, Antioxidant Enzymes, Oxidative Stress, Green Tea

Chen, D. , Zhou, Y. , Lyons, K. , Pahwa, R. and Reddy, M. (2015) Green Tea Consumption Reduces Oxidative Stress in Parkinson’s Disease Patients. Journal of Behavioral and Brain Science, 5, 194-202. doi: 10.4236/jbbs.2015.56020.