| Literature DB >> 10836541 |
Abstract
The aim of the present study is to evaluate the occurrence of oxidative stress in the cladoceran Daphnia longispina exposed to UV-A and UV-B radiation. The activity of antioxidant enzymes and lipid peroxidation markers is investigated and the protective action of ascorbic acid determined. Results show differences in the lethality radioinduced by UV-A and UV-B. Both UV-A and UV-B exposure cause an important increase in malonaldehyde (MDA) concentration and catalase activity. Ascorbic acid addition reduces the MDA concentration, indicating that the oxidative stress caused by either UV-A or UV-B radiation can be controlled by antioxidants. The increase of the antioxidant enzymes may be a response mechanism to oxidative stress.Entities:
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Year: 2000 PMID： 10836541 DOI： 10.1016/s1011-1344(00)00005-1
Source DB: PubMed Journal: J Photochem Photobiol B ISSN： 1011-1344 Impact factor: 6.252