Oxidative stress during stressful heat exposure and recovery in the North Sea eelpout Zoarces viviparus L. - UTU Research Portal

A1 Refereed original research article in a scientific journal

Oxidative stress during stressful heat exposure and recovery in the North Sea eelpout Zoarces viviparus L.

Authors: Heise K, Puntarulo S, Nikinmaa M, Abele D, Portner HO

Publisher: COMPANY OF BIOLOGISTS LTD

Publication year: 2006

Journal: Journal of Experimental Biology

Journal name in source: JOURNAL OF EXPERIMENTAL BIOLOGY

Journal acronym: J EXP BIOL

Volume: 209

Issue: 2

First page : 353

Last page: 363

Number of pages: 11

ISSN: 0022-0949

DOI: https://doi.org/10.1242/jeb.01977

Abstract

HSP70 levels were found to be only slightly elevated after recovery from sub-lethal heat stress, indicating minor importance of the heat shock response in this species. The DNA binding activity of the hypoxia-inducible transcription factor (HIF-1) was elevated only during mild heat exposure (18 degrees C), but appeared impaired at more severe heat stress. We suppose that the more oxidized redox state during extreme heat may interfere with the hypoxic signaling response.