Match!
Atef Mansour
Fisheries and Oceans Canada
9Publications
7H-index
108Citations
Publications 8
Newest
#1Guoqi Han (Fisheries and Oceans Canada)H-Index: 16
#2Paul Lyon (Fisheries and Oceans Canada)H-Index: 1
Last.Atef Mansour (Fisheries and Oceans Canada)H-Index: 7
view all 3 authors...
3 CitationsSource
#1Manjusri P.A. Wijekoon (MUN: Memorial University of Newfoundland)H-Index: 1
#2Christopher C. Parrish (MUN: Memorial University of Newfoundland)H-Index: 42
Last.Atef Mansour (Fisheries and Oceans Canada)H-Index: 7
view all 3 authors...
Abstract The effect of changing temperature on muscle fatty acid composition was examined in juvenile steelhead trout (~ 120 g) with complete substitution of fish oil (herring oil; HE) with either flax seed oil (FLX; also known as linseed oil) or sunflower oil (SF). The temperature was increased from ~ 10.0 °C to 18.0 °C following seasonal temperature changes in ~ 2 °C incremental steps with plateaus. Dietary lipid analysis showed the HE diet was rich in marine lipids, docosahexaenoic acid (DHA,...
16 CitationsSource
#1Dounia Hamoutene (Fisheries and Oceans Canada)H-Index: 8
#2Hélène Volkoff (MUN: Memorial University of Newfoundland)H-Index: 24
Last.Kenneth Lee (Concordia University)H-Index: 4
view all 9 authors...
Emerging evidence from North Sea investigations indicates that the discharge of produced water (PW) may impact biota over greater distances from operational offshore platforms than originally predicted. We have investigated the effects of PW on cod immunity, feeding and general metabolism by exposing fish to diluted PW at concentrations of 0, 100 and 200 ppm for 76 days. No significant differences were observed in weight gain or food intake. Similarly, serum metabolites, whole blood fatty acid p...
8 CitationsSource
#1Alejandro Cohen (MUN: Memorial University of Newfoundland)H-Index: 13
#2Atef Mansour (Fisheries and Oceans Canada)H-Index: 7
Last.Joseph Banoub (MUN: Memorial University of Newfoundland)H-Index: 15
view all 3 authors...
In this work, we present a simple method for absolute quantification of plasma vitellogenin from both rainbow trout and Atlantic salmon. Plasma samples obtained from control and β-estradiol induced fish were digested with trypsin. A characteristic ‘signature peptide’ was selected and analyzed by high performance liquid chromatography (HPLC) coupled to an electrospray quadrupole-time-of-flight tandem mass spectrometer, using a deuterated homolog peptide as an internal standard. The hybrid tandem ...
16 CitationsSource
#1Alejandro Cohen (MUN: Memorial University of Newfoundland)H-Index: 13
#2Atef Mansour (Fisheries and Oceans Canada)H-Index: 7
Last.Joseph Banoub (MUN: Memorial University of Newfoundland)H-Index: 15
view all 3 authors...
Vitellogenin is a protein produced by the liver of oviparous animals in response to circulating estrogens. The amino acid sequence of vitellogenin from Atlantic cod (Gadus morhua) has not yet been determined. In this study Atlantic cod vitellogenin was characterized using a ‘bottom-up’ mass spectrometric approach. Vitellogenin synthesis was induced ‘in vivo’ with β-estradiol, and subjected to trypsin digestion for characterization by matrix-assisted laser desorption/ionization quadrupole time-of...
14 CitationsSource
#1Joseph Banoub (MUN: Memorial University of Newfoundland)H-Index: 15
#2Alejandro Cohen (MUN: Memorial University of Newfoundland)H-Index: 13
Last.Pierre ThibaultH-Index: 63
view all 4 authors...
Vitellogenin (VTG) is a protein produced by the liver of oviparous animals in response to circulating estrogens. In the plasma of males and immature females, VTG is undetectable. VTG has been used as a biomarker for exposure to endocrine disruptors in many species. In the present study, characterization of intact Atlantic salmon VTG was effected using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI ToF MS). Tryptic digest peptides were analyzed by MALDI ToF MS...
20 CitationsSource
#1Joseph Banoub (MUN: Memorial University of Newfoundland)H-Index: 15
#2Pierre ThibaultH-Index: 63
Last.David M. Jackman (MUN: Memorial University of Newfoundland)H-Index: 37
view all 6 authors...
Vitellogenin (VTG) is a protein produced by the liver of oviparous animals. It is being used as a biomarker for exposure to endocrine disruptors in many species. Rainbow trout Vtg has recently been sequenced by the conventional cDNA nucleotide approach. We focused on protein characterization of the intact protein and its derived tryptic and cyanogen bromide peptides by matrix-assisted laser desorption/ionisation and electrospray ionisation mass spectrometry. The molecular mass of the intact prot...
12 CitationsSource
#1Atef Mansour (St. John's University)H-Index: 7
#2Doris M. Babstock (St. John's University)H-Index: 1
Last.Carolyn W. Harley (St. John's University)H-Index: 34
view all 6 authors...
Idazoxan, an a2 adrenoceptor antagonist (2 mg/kg), enhanced novel object investigation in a holeboard in rats as previously reported (V. Devauges & S. J. Sara, 1990). Two weeks of 10 min/day in 37 °C water increased dopamine-β-hydroxylase staining density in the locus coeruleus but did not enhance novel object investigation. In contrast to idazoxan, however, the warm water treatment increased rearing, center entries, and activity, a pattern previously described during tonic infusion of norepinep...
11 CitationsSource
1