Influence of different essential and non-essential metals on MTLP levels in the Copepod Tigriopus brevicornis

Barka, Sabria; Pavillon, Jean-François; Amiard, J. C.

doi:10.1016/s1532-0456(00)00198-8

Cited by 89 publications

(75 citation statements)

References 44 publications

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“…However, due to the cooperation and protection of the antioxidant system (e.g., SOD, GPx, GST, and GSH) during Ni exposure (Table 3), the copepods might recover from Ni-induced oxidative stress and subsequently induce the synthesis of MT in the late exposure time, with the concomitant excitation of its detoxification function. Barka et al (2001) also found that 1-40 lg/L Ni can remarkably elevate the metallothionein-like protein level in the copepod T. brevicornis, which is kept in balance during the 14 days of exposure. Thus, in response to Ni exposure, the copepod could induce MT synthesis to act on the detoxification function and thereafter counteract metal attack.…”

Section: Discussionmentioning

confidence: 82%

“…It should be noted that the MT level measured in organisms is actually a result of the interaction between the synthesis and degradation process (Couillard et al 1995). It could be assumed that the copepod T. japonicus might promptly initiate the detoxification process involving MT as a response to Ni exposure, and the increase in MT activity might result in more turnover of this protein, but not in an enhanced content, which is also demonstrated by Barka et al (2001). Therefore, in the present study, Ni treatment exerting a prohibitive effect on the MT level in the early exposure time might be a consequence of the increasing MT activity in the copepods, which was manifested in its quicker turnover.…”

Section: Discussionmentioning

confidence: 92%

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Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel

Wang

2009

Ecotoxicology

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Tigriopus japonicus Mori has been recognized as a good model for toxicological testing of marine pollutants. Recently, a large number of genes have been identified from this copepod, and their mRNA expression has been studied independently against exposure to marine pollutants; however, biochemical-response information is relatively scarce. The response of T. japonicus to nickel (Ni) additions was examined under laboratory-controlled conditions in 12 days exposure. Superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-S-transferase (GST), acetylcholinesterase (AchE), reduced glutathione (GSH), the ratio of reduced to oxidized glutathione (GSH/GSSG) and metallothionein (MT) were analyzed for Ni treatments (0, 0.125, 0.25, 0.75 and 3.0 mg/L) after 1, 4, 7 and 12 days. The thiobarbituric reactive species assay was used to evaluate lipid peroxidation (LPO) level in copepods after exposure. The results showed that Ni remarkably affected the biochemical parameters (SOD, GPx, GST, GSH, and GSH/GSSG) after certain exposure durations. However, the copepod's LPO level was significantly decreased under metal treatments after exposure, hinting that the factors involved in LPO might not significantly depend on the operations and functions in the antioxidant system. Ni exhibited the neurotoxicity to copepods, because its use obviously elevated AchE activity. During exposure, Ni initially displayed an inhibition effect but induced MT synthesis in T. japonicus by day 12, probably being responsible for metal detoxification. Thus, Ni had intervened in the detoxification process and antioxidant system of this copepod, and it could be used as a suitable bioindicator of Ni exposure via measuring SOD, GPx, GST, and MT as biomarkers.

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 92%

Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel

Wang

2009

Ecotoxicology

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“…Brooks et al (1995), who measured acute toxicity tests with heavy metals using as a test organism the common Australian ostracod Diacypris compacta, calculated LC 50 to 96-h for Cu, Zn, Pb and Cd, which resulted to be 0.8, 2.1, 3.1 and 4.3 µg ml -1 , respectively and for 8 days, the LC 50 were 0.4, 0.7, 2.2 and 1.1 µg ml -1 . According to the criteria of ANZECC (1992) the maximum acceptable concentrations in the Coorong area should be 4, 5, 22 and 9 µg ml -1 respectively, although higher Cu and Zn concentrations have been reported for the area of study in Australia being a significant danger to the aquatic biota.…”

Section: Fluoridementioning

confidence: 99%

Inter- and Intraspecific Variability in Invertebrate Acute Toxicity Response to Arsenic and Fluoride Exposure

Martinez¹,

Luis-Fernando²,

Rubio-Franchini³

et al. 2018

JEHS

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Abstract:The adverse effects of arsenic and fluoride exposure on six groups of freshwater invertebrates were investigated. Acute toxicity tests (48-h) with arsenic trioxide (As 2 NO 3 ) resulted in the following pattern of sensitivity: Daphnia magna 24-h-old = Brachionus patulus 72-h-old = Daphnia. cf. prolata, 21-d-old = D. magna 5-d-old > Heterocypris incongruens juvenile instars > Culex sp. Heterocypris juv. incongruens instars were the second group more tolerant to arsenic and the second group that bioconcentrates arsenic the least. In contrast, invertebrates exposed to sodium fluoride (NaF), showed a different pattern of sensitivity:Our results suggest that all species tested might be considered good model tests organisms for As toxicity except H. incongruens. The rotifer B. patulus did not accumulate either arsenic or fluoride; and its sensitivity was intermediate for both toxicants. In contrast, D. cf. prolata accumulated more fluoride and was also (together with 5-d-old D. magna) the most tolerant to fluorine. In the case of arsenic, 5-d-old D. magna were the organisms with highest accumulation rates, but their sensitivity was similar to all other species (except for Culex sp. and H. incongruens). Interestingly, H. incongruens juv. instars have low sensitivity to As but are the most sensitive species to fluoride exposure. These results point out to the need of consider several invertebrate species as model organisms for environmental protection of particular ecosystems, or that some freshwater species have the potential to be used as fluorine bioaccumulators in remediation processes.

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“…Tigriopus brevicornis was utilized mainly to assess the toxicity of both essential and nonessential metals (Forget et al, 1998;Barka et al, 2001), considering also the detoxification processes (Barka, 2000(Barka, , 2007 and the enzyme activity (Forget et al, 2003). Other studies concerned the effect of thermal shocks simulating the action of coastal nuclear power stations (Falchier et al, 1981) and the assessment of pesticide toxicity (Forget et al, 1998).…”

Section: New Approaches In Marine Ecotoxicology: Promising Copepod Tementioning

confidence: 99%

Utilization of Marine Crustaceans as Study Models: A New Approach in Marine Ecotoxicology for European (REACH) Regulation

Pane¹,

Chiara²,

Giacco³

et al. 2012

Ecotoxicology

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Influence of different essential and non-essential metals on MTLP levels in the Copepod Tigriopus brevicornis

Cited by 89 publications

References 44 publications

Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel

Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel

Inter- and Intraspecific Variability in Invertebrate Acute Toxicity Response to Arsenic and Fluoride Exposure

Utilization of Marine Crustaceans as Study Models: A New Approach in Marine Ecotoxicology for European (REACH) Regulation

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