Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol.

Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol. Research Abstract Details 

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Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol. Abstract Text:

In this study we measured plasma cortisol, plasma glucose, plasma sodium and potassium, and liver and gill hsp70 levels in juvenile matrinxã (Brycon amazonicus) subjected to a 96 h exposure to phenol (0, 0.2, and 2.0 ppm), and the effect of this exposure on their ability to respond to a subsequent handling stress. Fish were sampled prior to initiation of exposure and 96 h, and at 1, 6, 12, and 24 h post-handling stress. During the 96 h exposure, plasma cortisol and glucose levels remained unchanged in all treatments. While plasma sodium levels were significantly reduced in all groups, plasma potassium levels only decreased in fish exposed to 0 and 0.2 ppm of phenol. Liver hsp70 levels decreased significantly at 96 h in fish exposed to 2.0 ppm of phenol. All groups, except fish exposed to 0.2 ppm of phenol, were able to increase plasma cortisol and glucose levels after handling stress. Fish exposed to 2.0 ppm of phenol showed decreased gill and liver hsp70 levels after the handling stress. Our data suggest that exposure to phenol may compromise the ability of matrinxã to elicit physiological responses to a subsequent stressor.

Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol. Publishing Authors By Initials

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Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Comparative biochemistry and physiology. Toxicolog

VOLUME: 147

Page Numbers: 416-23

Journal Abbreviation: Comp. Biochem. Physiol. C Toxi

ISSN: 1532-0456

DAY: 11

MONTH: 01

YEAR: 2008

Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Impairment of the stress response in matrinxã juveniles (Brycon amazonicus) exposed to low concentrations of phenol.

AFFILIATION: Universidade Federal de São Carlos, Rod Washington Luis, km 235, Sao Carlos, SP, 13565-905, Brazil.

Country: United States

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MEDLINETA: Comp Biochem Physiol C Toxicol

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