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You searched for: Journal Aquatic toxicology Remove constraint Journal: Aquatic toxicology Publication Year 2009 Remove constraint Publication Year: 2009 Source 2009 v.94 no.3 Remove constraint Source: 2009 v.94 no.3
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1. Cell proliferation alterations in Chlorella cells under stress conditions

Author:
Rioboo, Carmen; O'Connor, José Enrique; Prado, Raquel; Herrero, Concepción; Cid, Ángeles
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 229-237
ISSN:
0166-445X
Subject:
microalgae; Chlorella vulgaris; terbutryn; cytotoxicity; cell proliferation; viability; microbial growth; cytokinesis
Abstract:
... Very little is known about growth and proliferation in relation to the cell cycle regulation of algae. The lack of knowledge is even greater when referring to the potential toxic effects of pollutants on microalgal cell division. To assess the effect of terbutryn, a triazine herbicide, on the proliferation of the freshwater microalga Chlorella vulgaris three flow cytometric approaches were used: ( ...
DOI:
10.1016/j.aquatox.2009.07.009
PubMed:
19679360

2. Changes in the protein expression profiles of the Hepa-T1 cell line when exposed to Cu²⁺

Author:
Chen, Dong-Shi; Chan, King Ming
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 163-176
ISSN:
0166-445X
Subject:
Oreochromis niloticus; tilapia (common name); copper; cytotoxicity; toxicity testing; metabolic detoxification; liver; cell lines; hepatocytes; proteins; gene expression; polymerase chain reaction; lethal concentration 50
Abstract:
... Copper is an essential element in a variety of biological processes, but it can be toxic when present in excessive amounts. The central regulators of cellular copper metabolism include copper-binding proteins, copper transporters, metal membrane active transporters and copper-dependent enzymes. However, the way in which cupric ions (Cu²⁺⁾ cause cellular changes in proteins and lead to toxic effect ...
DOI:
10.1016/j.aquatox.2009.06.014

3. Comparing the inhibitory effects of five protoxicant organophosphates (azinphos-methyl, parathion-methyl, chlorpyriphos-methyl, methamidophos and diazinon) on the spontaneously beating auricle of Sparus aurata: An in vitro study

Author:
Tryfonos, Melpomeni; Papaefthimiou, Chrisovalantis; Antonopoulou, Efthimia; Theophilidis, George
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 211-218
ISSN:
0166-445X
Subject:
water pollution; organophosphorus pesticides; toxicity testing; heart; bream; Sparus aurata; cholinergic receptors
Abstract:
... Organophosphates (OPs) can provoke toxicity by inhibiting acetylcholinesterase (AChE) in non-target organisms, like fish. In a previous pilot study, the anticholinesterase effects of paraoxon on the heart of Sparus aurata were examined [Tryfonos, M., Antonopoulou, E., Papaefthimiou, C., Chaleplis, G., Theophilidis, G., 2009. An in vitro assay for the assessment of the effects of an organophosphate ...
DOI:
10.1016/j.aquatox.2009.07.003
PubMed:
19674799

4. Copper toxicity in gills of the teleost fish, Oreochromis niloticus: Effects in apoptosis induction and cell proliferation

Author:
Monteiro, Sandra Mariza; dos Santos, Nuno M.S.; Calejo, Margarida; Fontainhas-Fernandes, António; Sousa, Mário
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 219-228
ISSN:
0166-445X
Subject:
water pollution; copper; cytotoxicity; Oreochromis niloticus; tilapia (common name); gills; apoptosis; cell proliferation; DNA fragmentation; messenger RNA; gene expression; gene induction
Abstract:
... Recent in vitro studies have demonstrated that copper may induce apoptosis triggering the activation of caspase-3, a central effector of apoptotic cell death. However, the precise mechanism of copper-induced apoptosis is still unclear, even less so in Oreochromis niloticus where no caspase genes have been reported so far. This study aimed to assess the in vivo role of copper in apoptosis induction ...
DOI:
10.1016/j.aquatox.2009.07.008
PubMed:
19656581

5. Copper uptake kinetics and regulation in a marine fish after waterborne copper acclimation

Author:
Dang, Fei; Zhong, Huan; Wang, Wen-Xiong
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 238-244
ISSN:
0166-445X
Subject:
Acanthopagrus; marine fish; water pollution; copper; dietary exposure; environmental exposure; acclimation; kinetics; bioaccumulation; metallothionein; uptake mechanisms
Abstract:
... The uptake kinetics and regulation of copper in a marine predatory fish, the black sea bream Acanthopagrus schlegeli after acclimation to waterborne Cu were examined, using radiotracer techniques. The dissolved Cu uptake followed a linear pattern during the time of exposure, and the calculated uptake rate constant was 6.24Lkg⁻¹ day⁻¹. The efflux rate constant was 0.091day⁻¹ following dietary uptak ...
DOI:
10.1016/j.aquatox.2009.07.011
PubMed:
19683350

6. Effects of environmental concentrations of the antiepilectic drug carbamazepine on biomarkers and cAMP-mediated cell signaling in the mussel Mytilus galloprovincialis

Author:
Martin-Diaz, Laura; Franzellitti, Silvia; Buratti, Sara; Valbonesi, Paola; Capuzzo, Antonio; Fabbri, Elena
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 177-185
ISSN:
0166-445X
Subject:
drugs; environmental exposure; Mytilus galloprovincialis; mussels; biomarkers; oxidative stress; enzyme activity; cyclic AMP; messenger RNA; gene expression; protein kinases
Abstract:
... Pharmaceuticals represent a diverse collection of thousands of bioactive chemicals used in human and veterinary medicine. The increased consumption, together with the recent development of more sensitive analytical techniques, has identified these as emerging contaminants in the aquatic environment. According to many investigations pharmaceuticals do not cause acute toxic effects in organisms when ...
DOI:
10.1016/j.aquatox.2009.06.015
PubMed:
19632730

7. Evaluation of a carp primary hepatocyte culture system for screening chemicals for oestrogenic activity

Author:
Bickley, L.K.; Lange, A.; Winter, M.J.; Tyler, C.R.
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 195-203
ISSN:
0166-445X
Subject:
endocrine-disrupting chemicals; estradiol; estrogenic properties; Cyprinus carpio; carp; hepatocytes; in vitro culture; vitellogenin; vitellogenesis; messenger RNA; gender differences; gonads; histology; cytotoxicity; viability
Abstract:
... The presence of endocrine disrupting chemicals (EDCs) in the environment has driven the development of screening and testing assays to both identify chemicals with hormonal activity and evaluate their potential to cause adverse effects. As the number of animals used for research and regulatory purposes rises, and set against a desire to reduce animal testing, there is increased emphasis on the dev ...
DOI:
10.1016/j.aquatox.2009.07.006
PubMed:
19695720

8. In vitro effects of metal pollution on Mediterranean sponges: Species-specific inhibition of 2′,5′-oligoadenylate synthetase

Author:
Saby, Emilie; Justesen, Just; Kelve, Merike; Uriz, Maria J.
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 204-210
ISSN:
0166-445X
Subject:
water pollution; heavy metals; Porifera; enzyme activity; enzyme inhibition; immune response; immunotoxicity; Mediterranean Sea
Abstract:
... Heavy metals are among the main pollutants of the Mediterranean coastal waters where they can harm sublittoral biota. Filter-feeder, long-living invertebrates that remain fixed to the rocky bottom, such as sponges, are good targets to metal contamination studies since they may be exposed to potential low levels of contamination for years. Several molecular and biochemical mechanisms are developed ...
DOI:
10.1016/j.aquatox.2009.07.002
PubMed:
19651447

9. Kinetics and effects of dichloroacetic acid in rainbow trout

Author:
Fitzsimmons, Patrick N.; Hoffman, Alex D.; Lien, Gregory J.; Hammermeister, Dean E.; Nichols, John W.
Source:
Aquatic toxicology 2009 v.94 no.3 pp. 186-194
ISSN:
0166-445X
Subject:
water pollution; dichloroacetic acid; disinfectants; byproducts; Oncorhynchus mykiss; trout; fish; toxicity testing; pharmacokinetics; biochemistry; physiological response
Abstract:
... Halogenated acetic acids (HAAs) produced by chlorine disinfection of municipal drinking water represent a potentially important class of environmental contaminants. Little is known, however, about their potential to adversely impact fish and other aquatic life. In this study we examined the kinetics and effects of dichloroacetic acid (DCA) in rainbow trout. Branchial uptake was measured in fish co ...
DOI:
10.1016/j.aquatox.2009.07.001
PubMed:
19656582