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- Title
Long-term intake of white tea prevents oxidative damage caused by adriamycin in kidney of rats.
- Authors
Espinosa, Cristóbal; López‐Jiménez, José A; Pérez‐Llamas, Francisca; Guardiola, Francisco A; Esteban, Maria A; Arnao, Marino B; Zamora, Salvador
- Abstract
BACKGROUND White tea infusion ( Camelia sinensis) has antioxidants properties. The infusion contains polyphenols that have been proposed to induce antioxidant response element ( ARE) response via nuclear factor E2-related factor 2 ( NRF2). Adriamycin ( ADR) has antitumour properties and oxidative effects. Oxidative stress is related to a variety of kidney diseases. Prevention of the oxidative stress through long-term intake of white tea and the study of the molecular mechanisms involved in protection could be of great interest. Rats were given distilled water, 0.015 or 0.045 g of solid white tea extract kg−1 body weight for 12 months. Animals received an injection of ADR. In kidney, oxidative stress parameters were measured, the expressions of nuclear factor E2-related factor 2 gene ( Nrf2), and detoxifying and antioxidants genes were analysed, and the activities of catalase ( CAT), superoxide dismutase ( SOD) and glutathione reductase ( GR) were measured. RESULTS ADR administration increased oxidative parameters and decreased the antioxidant activity; significantly increased the expression of analysed genes and the activity of CAT and SOD and decreased GR activity. The highest white tea dose protected redox status and inhibited ARE response. CONCLUSION Long-term intake of white tea protected kidney against the oxidative stress. ADR activated the ARE response but in animals treated with the highest dose of white tea, this response was inhibited, probably for antioxidant protection. © 2015 Society of Chemical Industry
- Subjects
CAMELLIAS; OXIDATIVE stress; KIDNEY physiology; DOXORUBICIN; SUPEROXIDE dismutase; GLUTATHIONE reductase; PREVENTION; PHARMACODYNAMICS
- Publication
Journal of the Science of Food & Agriculture, 2016, Vol 96, Issue 9, p3079
- ISSN
0022-5142
- Publication type
Article
- DOI
10.1002/jsfa.7483