Lipid peroxidation and antioxidant defense system in spawn of brown trout (Salmo trutta m. trutta L.) affected by ulcerative dermal necrosis      [RESEARCH ARTICLE]

Natalia Kurhalyuk; Halyna Tkachenko; Katarzyna Pałczyńska

doi:10.2478/v10086-010-0013-0

Natalia Kurhalyuk
Halyna Tkachenko
Katarzyna Pałczyńska

DOI: https://doi.org/10.2478/v10086-010-0013-0

Keywords: brown trout, ulcerative dermal necrosis, spawn, oxidative stress, antioxidant defense system

Abstract

The objective of the present study was to investigate the importance of the antioxidant enzymes: superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), and glutathione peroxidase (GPX) in the defense against lipid and protein oxidation in spawn from female brown trout, Salmo trutta m. trutta L. affected by ulcerative dermal necrosis (UDN). UDN induced increased lipid and protein oxidation levels. The current results show that UDN infection led to oxidative stress with the inhibition of antioxidant defense mechanisms. The inhibition of glutathione defense system activity might be responsible for this failure in cellular antioxidant defenses. UDN induces irreversible changes in pro- and antioxidative function which effected decreased spawn survival as well as reductions in spawning efficiency.

CORRESPONDING AUTHOR:

N. Kurhalyuk [+], H. Tkachenko, K. Pałczyńska
Department of Animal Physiology
Institute of Biology and Environmental Protection
Pomeranian University
Arciszewskiego 22b, 76-200 Słupsk, Poland
Tel. +48 59 84 05 435, e-mail: kurhalyuk@gmail.com