Malondialdehyde concentrations in the intestine and gills of Vardar chub (Squalius vardarensis Karaman) as indicator of lipid peroxidation

Dragun, Zrinka; Filipović Marijić, Vlatka; Krasnići, Nesrete; Ramani, Sheriban; Valić, Damir; Rebok, Katerina; Kostov, Vasil; Jordanova, Maja; Erk, Marijana (2017) Malondialdehyde concentrations in the intestine and gills of Vardar chub (Squalius vardarensis Karaman) as indicator of lipid peroxidation. Environmental Science and Pollution Research, 24 (20). pp. 16917-16926. ISSN 0944-1344

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Abstract

Lipid peroxidation product, malondialdehyde (MDA), was studied in Vardar chub(Squalius vardarensis Karaman) as indicator of oxidative stress, using native fish from three rivers in northern Macedonia: mining impacted Zletovska and Kriva rivers, and agriculturally impacted Bregalnica River. MDA concentrations were measured in the intestine in spring and autumn of 2012, and in gills in autumn. The aims of the study were to establish the type of contamination which provokes more pronounced MDA increase, as well as the organ which more reliably reflects the occurrence of oxidative stress. MDA levels in the intestine in spring amounted to 3.29-155.8 nmol g-1, in autumn to 4.85-111.1 nmol g-1, whereas MDA concentrations in the gills in autumn were 7.69-147.5 nmol g-1. Stronger influence of organic contamination on development of oxidative stress was observed in both organs, as seen from higher median MDA concentrations in autumn in fish from highly pesticide contaminated Bregalnica River (gills: 78.4 nmol g-1 ; intestine: 23.5 nmol g-1) compared to highly metal contaminated Zletovska River (gills: 15.9 nmol g-1 ; intestine: 17.4 nmol g-1). The response of the gills to contamination was twice stronger than intestine. The majority of fish from pesticide polluted river had increased MDA in gills, in contrast to only sporadically increased MDA in the intestine. Our results indicated that development of oxidative stress strongly depends on the selected fish organ, and that gills seem to be a better choice for monitoring oxidative stress than intestine, due to their continuous and direct exposure to polluted river water.

Item Type:	Article
Additional Information:	This study was carried out as a part of two bilateral projects between Macedonia and Croatia, titled "The assessment of the availability and effects of metals on fish in the rivers under the impact of mining activities" and "Bacterial and parasitical communities of chub as indicators of the status of environment exposed to mining activities". The financial support by the Ministry of Science, Education and Sport of the Republic of Croatia (project nos. 098-0982934-2721 and 098-0982934-2752) is acknowledged.
Uncontrolled Keywords:	Gills; intestine; malondialdehyde; metals; pesticides; Vardar chub
Subjects:	NATURAL SCIENCES > Chemistry NATURAL SCIENCES > Biology NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions:	Division for Marine and Enviromental Research
Projects:	Project title Project leader Project code Project type Croatian-Macedonian bilateral project "The assessment of the availability and effects of metals on fish in the rivers under the impact of mining activities" Zrinka Dragun UNSPECIFIED Bilateral Croatian-Macedonian bilateral project "Bacterial and parasitical communities of chub as indicators of the status of environment exposed to mining activities" Damir Kapetanović UNSPECIFIED Bilateral Stanične promjene u vodnih organizama pobuđene metalima- Marijana Erk 098-0982934-2721 MZOS Patologija organizama iz voda u odnosu na zagađivala i akvakulturu- Damir Kapetanović 098-0982934-2752 MZOS
Depositing User:	Zrinka Dragun
Date Deposited:	05 Dec 2019 14:18
URI:	http://fulir.irb.hr/id/eprint/5227
DOI:	10.1007/s11356-017-9305-x

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