Effects of Chromium Picolinate on Oxidative Damage in Primary Piglet Hepatocytes |
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Authors: | Gao-Yi Tan Jin-Ming Bi Min-Hong Zhang Jing-Hai Feng Peng Xie Shan-Shan Zheng |
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Institution: | (1) College of Life Sciences, Suzhou University, Suzhou, 215123, People’s Republic of China |
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Abstract: | A proven photocatalyst, titanium dioxide in the form of nano-anatase, is capable of undergoing electron transfer reactions
under light. In previous studies, we had proven that nano-anatase could absorb ultraviolet light (UV-B) and convert light
energy to stable chemistry energy finally via electron transport in spinach chloroplasts.The mechanisms by which nano-anatase
promotes antioxidant stress in spinach chloroplasts under UV-B radiation are still not clearly understood. In the present
paper, we investigate the effects of nano-anatase on the antioxidant stress in spinach chloroplasts under UV-B radiation.
The results showed that nano-anatase treatment could significantly decrease accumulation of superoxide radicals, hydrogen peoxide (H2O2), and malonyldialdehyde (MDA) content, and increase activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase
(APX), guaiacol peroxidase (GPX), and elevate evolution oxygen rate in spinach chloroplasts under UV-B radiation. Together,
nano-anatase could decrease the oxidative stress to spinach chloroplast caused by UV-B radiation. |
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Keywords: | UV-B radiation Nano-anatase TiO2 Spinach Chloroplast Antioxidant stress |
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