کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2149374 1548645 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
DNA damage and repair in haemolymph cells of golden mussel (Limnoperna fortunei) exposed to environmental contaminants
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
DNA damage and repair in haemolymph cells of golden mussel (Limnoperna fortunei) exposed to environmental contaminants
چکیده انگلیسی

The development of methodologies for biomonitoring freshwater ecosystems is of particular relevance in view of the serious problem of aquatic environmental pollution. The mussel species Limnoperna fortunei (golden mussel) was chosen to be tested as a biomonitor organism based on its population data and distribution. L. fortunei individuals were exposed to UV radiation in vitro, and in vivo to pentachlorophenol (PCP) and copper sulphate (CuSO4), with the aim of standardizing comet assay and micronucleus test methodologies and evaluating the potential of this organism as a biomonitor. Haemolymph cells immobilized in agarose on slides exposed to UV radiation showed a dose–response relationship with maximum damage at 4.2 J/m2. For the chemical tests, individuals were exposed for 2 h for the comet assay and 24 and 48 h for the micronucleus test. A dose–response relationship was observed for both chemicals. 3 × 10−5 M CuSO4 induced high genotoxicity, also producing some toxicity after 48 h of exposure. PCP induced maximum damage in both assays at 150 μg/L. Individuals exposed to PCP showed 100% repair 2 h after the exposure period, as assessed by the comet assay. Exposure to an environmental sample over 7 days confirmed the mussel sensitivity to water contaminants, detected both by the comet assay and the micronucleus test. The results allow us to suggest the golden mussel as a potential biomonitor organism.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mutation Research/Genetic Toxicology and Environmental Mutagenesis - Volume 605, Issues 1–2, 16 June 2006, Pages 78–86
نویسندگان
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