Laboratorio de Ecotoxicología Acuática, Junín de los Andes, Neuquén, Argentina . likes · 2 talking about this · 1 was here. Laboratorio de. Laboratorio de Ecotoxicología Acuática, Junín de los Andes, Neuquén, Argentina . likes · 1 was here. Laboratorio de Ecotoxicología Acuática (LEA). Laboratorio de Ecotoxicología Acuática in Junín De Los Andes – Contact details, Address Map, Photos, offers, Real time Reviews and Ratings.

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C Oil extraction well next to the stream in the 30s photograph by Pedro Penna, Parsons Letters denote significant differences among treatments within each time, 24 h lowercase letters and 96 h capital letters from Bonferroni test Table II.

Gene transcript expression of several cytochrome P oxidases was studied by semi-quantitative PCR in both field and laboratory. Fish models for environmental carcinogenesis: Identification of a novel mechanism of regulation of Ah dioxin receptor function.

Departamento de Química Biológica

Metabolism of polycyclic aromatic hydrocarbons in the aquatic environment. The transcript levels of CYP2M1 declined 1. Excretion of aromatic hydrocarbons and their metabolites by freshwater and seawater Dolly Varden char.

Fish are represented by a single species, the exotic rainbow trout O.

In vitro effects of endosulfan-based insecticides on mammalian sperm.

Data was complemented with laboratory exposure to water accommodated fraction WAF from the oil spill. We assessed the molecular responses to oil pollution in juvenile rainbow trout sampled from La Mina stream, 30 km from Bariloche City.


Mar del Plata, Argentina, Aprilpp. The maximum induction of CYP1A transcript expression has been reported to start eight to sixteen hours after exposure Minura et al. Similarly, aromatic hydrocarbons could act as endocrine-disrupting chemicals in O.

Rainbow trout cytochrome Ps: Bands were analyzed densitometrically using Image J software. Oil exposure induced gill and liver CYP1A transcription 1. The spills converge into a unique source point of pollution, with liters of crude oil per day entering the stream in February Phagocytic activity is higher in EG mussels than in SV ones under all conditions. The study was conducted in two m-long reaches: The TPH was extracted ecotoxicollogia each with carbon tetrachloride and was estimated by the analysis of the triple peak method EPA at three spectral regions: Comparison of rainbow trout and mammalian cytochrome P enzymes: CYP2K1 and CYP2M1 are involved in the metabolism of fatty acids and estrogenic hormones, and its down-regulation would indicate metabolic alterations.

Water samples were ecotoxicoloogia in polyethylene bottles and filtered through glass-fiber filters: The annealing temperatures and primer pairs used during the duplex PCR for each gene are shown in Table I. Invasions 4 Chemosphere 46 Triplicate samples were collected at the upstream reach —, — and — mat the oil spill zero metersat the downstream reach 50, and m and further downstreamand m.


Tested parameters comprised signs of paralysis, feeding activity, and immune cell integrity hemocyte numbers and viability; lysosomal membrane destabilization and ecotoxicoloia ROS production.

Seven CYP families have been reported for the rainbow trout Uno et al. Informe, Buenos Aires, Argentina, 64 pp.

Departamento de Química Biológica – FCEN, UBA

Fish have proved to be useful models when it comes to evaluating the health of aquatic ecosystems. Gill mass factor GF is affected by the E.

Thus, anomalous expression of both CYP2 could impact on steroid and fatty acid homeostasis in rainbow trout e. These clear and consistent changes reaffirm CYP1A transcript expression as a good semiquantitative biomarker for crude oil exposure.

A Oil remains afloat on the surface of stream water. CYPs transcriptional expression in wild rainbow trout. We performed post hoc comparisons between control ecotoxiccologia treatments, for both ecotoxicologis and 96 h, of all pairs of groups using two-sided significance levels with a Bonferroni adjustment.