Antioxidant status and stress proteins in the gills of the brown mussel Perna perna exposed to zinc

Effects of heavy metals on the expression of a zinc-inducible metallothionein-III gene and antioxidant enzyme activities in Crassostrea gigas

“…For GPx activity, significant up-regulations were observed in gills of the Zn-stressed group at the end of the experiment. Several studies have found that low concentration of zinc could enhance GPx activity in many marine organisms, such as mussels and trout, which was similar to the present result (Franco et al 2006). Although the single exposure of cadmium exerted no significant effect on GPx activity, the combined exposure of cadmium and zinc increased GPx activity in both gills and hepatopancreas.…”

Evaluation of Multixenobiotic Resistance in Dreissenid Mussels as a Screening Tool for Toxicity in Freshwater Sediments

“…Clear relationships between MXR induction and contamination by Cd, mercury, Zn, Cu have been also reported (Minier et al 2000;Eufemia and Epel 2000;Achard et al 2004;Franco et al 2006).…”

“…For the ecotoxicological evaluation of sediments, various acute and chronic bioassays have been developed, standardized, and successfully applied: Toxicity tests with bacteria and unicellular algae, crustacean bioassays, tests based on sediment-dwelling organisms, fish toxicity tests, etc. (Lappalainen et al 1999;Algaltoxkit 1996;Nebeker et al 1988;Phipps et al 1993;Franco et al 2006). Moreover, many alternative biotests making use of organisms belonging to various taxonomic groups and trophic levels proved to be useful tools in detecting toxicity risks posed by sediment-bound contaminants (Ingersoll et al 1995(Ingersoll et al , 1997Chapman et al 2002).…”

Responses of thioredoxin 1 and thioredoxin-related protein 14 mRNAs to cadmium and copper stresses in Venerupis philippinarum

“…Both Cd and Cu have been demonstrated to be toxic to marine bivalves and can strongly affect their physiological status by causing oxidative stress (Isani et al, 2003;Dovzhenko et al, 2005). It has been well acknowledged that the antioxidant enzymes such as SOD, Se-GPx and catalase worked cooperatively against oxidative stress, and their activities have been detected in many mollusks (Isani et al, 2003;Abele and Puntarulo, 2004;Franco et al, 2006). Recently, Trxs (thioredoxins) in marine invertebrates have received attention because of their critical roles in regulation of cellular redox homeostasis and fighting against the oxidative stress (Watson et al, 2004).…”