Vegetable and fruit juice enhances antioxidant capacity and regulates antioxidant gene expression in rat liver, brain and colon.
To explore the effect of fruit and vegetable (FV) juice on biomarkers of oxidative damage and antioxidant gene expression in rats, 36 adult male Wistar rats were randomly divided into control, low FV juice dosage or high FV juice dosage treatment groups. The rats were given freshly extracted FV juice or the same volume of saline water daily for five weeks. After intervention, serum and tissues specimens were collected for biomarker and gene expression measurement. FV juice intervention increased total antioxidant capacity, glutathione, vitamin C, β-carotene, total polyphenols, flavonoids levels andglutathione peroxidaseenzyme activity in rat serum or tissues (p < 0.05). FV juice intervention caused reduction of malondialdehyde levels in rat liver (p < 0.05) and significantly modulated transcript levels of glutamate cysteine ligase catalytic subunit (GCLC) and NAD(P)H:quinone oxidoreductase l (NQO1)in rat liver and brain (p < 0.05). The results underline the potential of FV juice to improve the antioxidant capacity and to prevent the oxidative damage in liver, brain and colon.
School of Public Health, Capital Medical University, Beijing, P.R. China.
Linhong
L
Yuan
School of Public Health, Capital Medical University, Beijing, P.R. China.
Jinmeng
J
Liu
School of Public Health, Capital Medical University, Beijing, P.R. China.
Jie
J
Zhen
School of Public Health, Capital Medical University, Beijing, P.R. China.
Yao
Y
Xu
School of Public Health, Capital Medical University, Beijing, P.R. China.
Shuying
S
Chen
School of Public Health, Capital Medical University, Beijing, P.R. China.
Nicholas Van
NV
Halm-Lutterodt
School of Public Health, Capital Medical University, Beijing, P.R. China.
Rong
R
Xiao