Publications by authors named "Nadia Aarab"

3 Publications

  • Page 1 of 1

Environmental harm assessment of a wastewater discharge from Hammerfest LNG: a study with biomarkers in mussels (Mytilus sp.) and Atlantic cod (Gadus morhua).

Mar Pollut Bull 2013 Apr 15;69(1-2):28-37. Epub 2013 Feb 15.

IRIS - International Research Institute of Stavanger, N-4068 Stavanger, Norway.

Biologically treated wastewater (WW) from the Hammerfest LNG (liquefied natural gas) plant is discharged to the sea. A study using biomarkers in mussels and Atlantic cod was performed to examine whether this discharge meets a zero harmful emission requirement. Caging of mussels close to the outfall and exposure of mussels and fish to WW in the laboratory were conducted, and a suite of contaminant responsive markers was assessed in exposed animals. In mussels the markers included chemical contaminant levels, haemocyte lysosomal instability and nucleus integrity, cellular energy allocation, digestive gland and gonad histopathology and shell-opening behaviour. In fish, biliary PAH metabolites and gill histopathology biomarkers were measured. A consistent cause-effect relationship between WW treatments and markers measured in test animals was not found. The results therefore indicate that the WW emission is unlikely to represent a significant stress factor for the local marine environment under the conditions studied.
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http://dx.doi.org/10.1016/j.marpolbul.2013.01.001DOI Listing
April 2013

Seasonal variation of histopathological and histochemical markers of PAH exposure in blue mussel (Mytilus edulis L.).

Mar Environ Res 2011 Apr 28;71(3):213-7. Epub 2011 Jan 28.

International Research Institute of Stavanger, Mekjarvik 12, N-4070 Randaberg, Norway.

The aim of this work was to study seasonal variation of histopathological and histochemical markers in blue mussels (Mytilus edulis L.) exposed to pyrogenic PAH contaminants. Mussels were collected in January, June, September and October from a sampling site in the vicinity of the discharge from an aluminium smelter and from a clean reference site. Histopathological analysis was carried out on the digestive gland (DG) and the gonads, lipofuscin and neutral lipids were analysed in the DG. Clear responses in lipofuscin and neutral lipids were detected in the DG of mussels collected from the polluted site at some sampling times. Moreover, these mussels presented atrophy in digestive tubules and haemocytic aggregates in the gonad and DG. However, in all parameters studied, the magnitude of the response showed clear seasonal variation.
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http://dx.doi.org/10.1016/j.marenvres.2011.01.005DOI Listing
April 2011

Scoring approach based on fish biomarkers applied to French river monitoring.

Biomarkers 2004 May-Jun;9(3):258-70

Laboratoire de Physico-Toxicochimie des systèmes Naturels, UMR 5472 CNRS, Université Bordeaux I, F-33405 Talence, France.

The aim was to apply a multimarker scoring approach as complementary to freshwater monitoring programmes carried out by the Water Agency Adour-Garonne. Fish (chub, barbel and trout) were collected in 11 sites in rivers in south-west France. Five biomarkers of response were measured either in muscle or brain for acetylcholinesterase (AChE) and in liver for glutathione S-transferase, catalase and 7-ethoxyresorufine O-deethylase. As a result of multivariate analysis, sites were clearly discriminated mainly by 7-ethoxyresorufine O-deethylase and acetylcholinesterase activities. According to the scoring approach, a multimarker pollution index was calculated for each sampling site as the sum of the response index of the five measured biomarkers (pollution index). Sorting was established by ranging the sites from lightly to highly contaminated locations.
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http://dx.doi.org/10.1080/13547500400015626DOI Listing
May 2005
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