Endocrine and metabolic changes in Anguilla anguilla L. following exposure to β-naphthoflavone - A microsomal enzyme inducer

Anguilla anguilla L. were exposed during 24 and 48 h to 2.7 μM β-naphthoflavone (BNF), a known microsomal enzyme inducer. The BNF effects on thyroid-stimulating hormone (TSH), free triiodothyronine (T3), free thyroxine (T4) and cortisol plasma levels were investigated. Alterations on plasma glucose...

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Bibliographic Details
Authors: Teles, Mariana|||0000-0001-5525-4049; Oliveira, Miguel|||0000-0001-5404-7718; Pacheco, M. Guilherme Garcês|||0000-0003-0552-9643; Santos Maroño, Mauro|||0000-0002-6478-6570
Format: Article
Publication date:2005
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:324241
Online Access:https://ddd.uab.cat/record/324241
https://dx.doi.org/urn:doi:10.1016/j.envint.2004.07.003
Access Level:Open access
Keyword:Endocrine
Plasma
β-Naphthoflavone
Description
Summary:Anguilla anguilla L. were exposed during 24 and 48 h to 2.7 μM β-naphthoflavone (BNF), a known microsomal enzyme inducer. The BNF effects on thyroid-stimulating hormone (TSH), free triiodothyronine (T3), free thyroxine (T4) and cortisol plasma levels were investigated. Alterations on plasma glucose and lactate levels were also measured as an indication of energy-mobilizing hormones alterations. BNF showed to be able to decrease significantly A. anguilla plasma T4 levels, whereas TSH, T3 and cortisol plasma remained constant. However, plasma glucose levels were significantly increased, demonstrating that intermediary metabolism has been affected. These results demonstrate that BNF a PAH-like compound alters the normal functioning of the hypothalamo-pituitary-thyroid (HPT) axis in A. anguilla.