Metallothinein in intestine of red mullet, Mullus barbatus as a biomarker of copper exposure in the coastal marine areas

Filipović Marijić, Vlatka; Raspor, Biserka (2007) Metallothinein in intestine of red mullet, Mullus barbatus as a biomarker of copper exposure in the coastal marine areas. Marine Pollution Bulletin, 54 (7). pp. 935-940. ISSN 0025-326X

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Abstract

Dietary metal exposure in fish is studied in native red mullet, Mullus barbatus, involving metallothionein (MT) response in intestine, as primary site of metal uptake. Intestinal MT (μ g mg-1 proteins), total proteins (mg ml-1 S50), Cu, Zn, Fe, Mn and Cd (μ g ml-1 S50) are considered as indicators of metal exposure in specimens from near-shore and off-shore locations of the Eastern Adriatic Sea. Metallothionein and Cu are statistically significantly higher in 68 specimens from the Kaštela Bay (30.0± ; ; ; 6.71 μ g MT mg-1 proteins ; 0.30± ; ; ; 0.08 μ g Cu ml-1 S50), near-shore area, in comparison to 51 specimens from off-shore area, Šolta Island (25.9± ; ; ; 4.21 μ g MT mg-1 proteins ; 0.26± ; ; ; 0.09 μ g Cu ml-1 S50). Cytosolic Cu, as MT inducer, is significantly correlated (p<0.05, r=0.44) with MT, without dependence on fish biometry. Thus, in our study cytosolic intestinal Cu and MT levels are regarded as measurable biochemical responses in red mullet specimens, dwelling above sediments contaminated with Cu.

Item Type:	Article
Uncontrolled Keywords:	intestine ; metallothioneins ; cytosolic metals ; Mullus barbatus ; Adriatic Sea
Subjects:	NATURAL SCIENCES > Biology
Divisions:	Division for Marine and Enviromental Research
Projects:	Project title Project leader Project code Project type Stanične promjene u vodnih organizama pobuđene metalima- Marijana Erk 098-0982934-2721 MZOS
Depositing User:	Vlatka Filipović Marijić
Date Deposited:	09 Sep 2020 13:17
URI:	http://fulir.irb.hr/id/eprint/5928
DOI:	10.1016/j.marpolbul.2007.02.019

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