Heavy metal contamination and antioxidant response of a freshwater bryozoan (Lophopus crystallinus Pall., Phylactolaemata)

Elia, Antonia Concetta; Galarini, Roberta; Dörr, Ambrosius Josef Martin; Taticchi, Maria Illuminata

doi:10.1016/j.ecoenv.2005.12.004

Cited by 47 publications

(20 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Correlations between the efficiency of ROS detoxification and the stress tolerance have been reported by several authors (Porte et al 2002;Cavas et al 2005). However, there is little published data related to bryozoan and antioxidants (Elia et al 2007). In the present study, the invasive alga Lophocladia lallemandii induced an antioxidant response in the bryozoan Reteporella grimaldii, as shown by increased activities of CAT and GPx, whereas SOD presented similar activities in both invaded and noninvaded areas.…”

Section: Discussionmentioning

confidence: 93%

“…Bryozoan colonies are considered good indicators reflecting changing environmental conditions (Elia et al 2007). Since the invasive macroalgae Lophocladia lallemandii is capable of growth over all types of substrates, including sessile invertebrates, it can potentially induce a shift in regimen fluxes for sessile organisms such as bryozoans.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interaction between the invasive macroalga Lophocladia lallemandii and the bryozoan Reteporella grimaldii at seagrass meadows: density and physiological responses

et al. 2009

View full text Add to dashboard Cite

Invasive epiphyte Lophocladia lallemandii macroalga induces changes in the erect bryozoan Reteporella grimaldii at shallow Posidonia oceanica meadows at a Mediterranean pristine location. Bryozoan densities at noninvaded seagrass plots (88.32 ± 3.11 colonies m -2 ) are higher than those at invaded plots (13.39 ± 1.09 colonies m -2 ) with a fourfold decrease in number of colonies. Activation of enzymatic pathways (catalase, superoxide dismutase, glutathione peroxidase) and increase in lipid peroxidation malondialdehyde (MDA) [0.80 ± 0.06 nmol/mg prot at Posidonia oceanica plots to 1.08 ± 0.04 nmol/ mg prot at L. lallemandii (P \ 0.05)] is observed on sessile bryozoans as response to anoxia caused by L. lallemandii. d 13 C of bryozoan isotopic composition differed among treatments, covering a broad range (-19.30% invaded to -2.84% at noninvaded plots), suggesting modification of food sources. Induced shifts of a filter-feeding erect bryozoan by dense algal turfs at invaded seagrasses are demonstrated, highlighting the need to further address interaction across natural communities and alien species invaded systems before further cascade effects are driven.

show abstract

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Interaction between the invasive macroalga Lophocladia lallemandii and the bryozoan Reteporella grimaldii at seagrass meadows: density and physiological responses

et al. 2009

View full text Add to dashboard Cite

show abstract

“…The data presented here agree with this hypothesis, as GST was significantly (P \ 0.01) induced by the mixture of NSAIDs, particularly after 96 h of exposure to the High condition. This observed increase in the GST activity might be due to the activation of the natural antioxidant defence system by the xenobiotics and suggests that the GSTmediated detoxification process versus the pro-oxidation forces was induced (Elia et al 2007). However, the activation of GST could also produce free radical intermediates, such as superoxide radical, which can be then transformed into oxygen and hydrogen peroxide by SOD.…”

Section: Discussionmentioning

confidence: 95%

Sub-lethal effects induced by a mixture of three non-steroidal anti-inflammatory drugs (NSAIDs) on the freshwater bivalve Dreissena polymorpha

Parolini

Binelli

2011

Ecotoxicology

View full text Add to dashboard Cite

Non-steroidal anti-inflammatory drugs (NSAIDs) are the sixth top-selling drugs worldwide and are commonly found in freshwater ecosystems in the high ng/l to low μg/l range. Recent studies have investigated both the acute and the chronic toxicity of single NSAIDs on different biological models, but these studies have completely neglected the fact that, in the environment, non-target organisms are exposed to mixtures of drugs that have unforeseeable toxicological behavior. This work investigated the sub-lethal effects induced by a mixture of three common NSAIDs, namely, diclofenac, ibuprofen and paracetamol, on the freshwater bivalve, the zebra mussel (Dreissena polymorpha). The mussels were exposed to three different environmental concentrations of the mixture (Low, Mid and High). A multi-biomarker approach was used to highlight cyto-genotoxic effects and the imbalance of the oxidative status of the treated specimens. The Neutral Red Retention Assay (NRRA) was used as a biomarker of cytotoxicity, whereas the activities of catalase, superoxide dismutase, glutathione peroxidase and glutathione S-transferase were measured to assess the role played by the oxidative stress enzymes. In addition, the single cell gel electrophoresis assay, the DNA Diffusion assay and the micronucleus test were used to investigate possible genotoxic effects. According to our NRRA results, each treatment was able to induce a significant cellular stress in bivalves, probably due to the raise of oxidative stress, as indicated by the alteration of enzyme activities measured in treated specimens. Moreover, the mixture induced significant enhancements of DNA fragmentation, which preluded fixed genetic damage, as highlighted by the increase of both apoptotic and micronucleated cells.

show abstract

“…This enhancement suggested that detoxification against pro-oxidation powers, mediated by GST was induced (Elia et al, 2007). The extra generated ROS inactivated GST activity by interacting with the enzyme (Cunha et al, 2007).…”

Section: Discussionmentioning

confidence: 96%

Toxicological effects and oxidative stress responses in freshwater snail, Lanistes carinatus, following exposure to chlorpyrifos

Khalil

2015

Ecotoxicology and Environmental Safety

View full text Add to dashboard Cite

Heavy metal contamination and antioxidant response of a freshwater bryozoan (Lophopus crystallinus Pall., Phylactolaemata)

Cited by 47 publications

References 18 publications

Interaction between the invasive macroalga Lophocladia lallemandii and the bryozoan Reteporella grimaldii at seagrass meadows: density and physiological responses

Interaction between the invasive macroalga Lophocladia lallemandii and the bryozoan Reteporella grimaldii at seagrass meadows: density and physiological responses

Sub-lethal effects induced by a mixture of three non-steroidal anti-inflammatory drugs (NSAIDs) on the freshwater bivalve Dreissena polymorpha

Toxicological effects and oxidative stress responses in freshwater snail, Lanistes carinatus, following exposure to chlorpyrifos

Contact Info

Product

Resources

About