Journal of Food, Agriculture and Environment

Photooxidation and antioxidant responses in the gut of sea cucumber Stichopus japonicus autolysis exposed to UVC radiation

Author(s):

Xiufang Dong ¹, Jingyu Zhang ¹, Qian Xi ¹, Li Liu ², Nan Li ¹, Hui Fu ¹, Yu Gao ¹, Xinru Fan ¹, Hang Qi ^{1 *}

Recieved Date: 2014-01-26, Accepted Date: 2014-03-30

Abstract:

Ultraviolet (UV) radiation leads to photooxidation in various organisms. In our current study, we investigated that UVC caused photooxidative damage and reduced antioxidant responses in the guts of sea cucumber Stichopus japonicas. The guts of sea cucumber were exposed to UVC radiation for in vivo studies. The results showed that the acetyl cholinesterase (AchE) activity decreased after UVC irradiation, but cathepsin L and caspase-3 activities increased after UVC exposure. The products of photooxidative damage, malonyldialdehyde (MDA) and H₂O₂ increased after UVC exposure. Superoxide dismutase (SOD), catalase and glutathione peroxidase (GPx) were inhibited, but the content of GSH increased after UVC radiation for 6 h in vivo. These data indicated that a relationship existed between UVC-induced damage and photooxidation and also that SOD, catalase and GPx acted as important antioxidants to prevent photooxidation. According to these data, the guts of sea cucumber exhibited certain sensitivity to levels of UVC and ROS was an important factor to photo-oxidant damage and autolysis in the guts of sea cucumber Stichopus japonicas.

Keywords:

Sea cucumber Stichopus japonicas, photooxidative damage, UVC radiation, superoxide dismutase, catalase, glutathione peroxidase

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Food and Health
Pages: 207-211

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