Publications by authors named "Samir Touaylia"

Bisphenol A (BPA) is a chemical compound extensively employed in plastic manufacturing, and this pollutant has been detected in diverse aquatic organisms, notably bivalves. In order to comprehend the ecological and toxicological consequences of BPA Bisphenol A in these organisms, it is essential to examine the physiological and biochemical effects and identify areas where our understanding is lacking. This knowledge is crucial for determining the environn ental threat posed by bisphenol A and assisting decision-makers in establishing the appropriate priorities.

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Article Synopsis
  • The study investigates the effects of nano-zinc oxide (nZnO), a common pollutant, on freshwater mussels, an important indicator species in ecotoxicology, by exposing them to different concentrations of nZnO and zinc ions for seven days.
  • Results revealed significant changes in oxidative stress markers in the mussels, such as increased catalase (CAT) and acetylcholinesterase (AChE) activity, along with elevated malondialdehyde (MDA) levels, indicating oxidative stress due to nZnO exposure.
  • The study sheds light on the environmental toxicity of nanoparticles, specifically how nZnO affects mussel behavior and filtration rates, and provides new insights into the interaction between nanoparticles and b
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Diuron herbicide is widely used for weeds control in many kinds of cultivations. It reaches the waterbodies through various fate routes and can adversely threaten non-target organism. The current study was carried out to evaluate the antioxidant activity of Spirulina as feed additive against the toxicity of Diuron concentrations (40 and 80 µg/L) on the edible mollusk during seven days of exposure.

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Silver nanoparticles (AgNPs) have been reported as stressors for the bivalves' immune system at different regulatory levels, impacting the detection step and receptors, and other mediators, as well as effector molecules. However, studies on how AgNPs impact the transmission of signals from receptors and whether they have an effect on mediators and transcription factors are still scarce. This study aims to investigate the effect of 12 hours of exposure to 100 µg/L of AgNPs on the gene expression of the cytosolic adaptor Myeloid, the differentiation protein 88 (MgMyD88-b), and the interferon regulatory factor (Me4-IRF) in the gills and digestive gland of before and after blocking two major uptake pathways of nanoparticles (clathrin- and caveolae-mediated endocytosis).

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Glyphosate is a toxic environmental pollutant that has the ability to induce biochemical and physiological alterations in living organisms. Several studies have focused on the research of protective techniques against the stress induced by this contaminant. In this context, we studied the protective effect of against the disturbances induced by glyphosate.

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The phosphate fertilizer and phosphoric acid industries increase phosphogypsum levels in the aquatic environment leading to various disturbing effects. In the present work, we investigated the bio-uptake of heavy metals following the exposure of to three concentrations of phosphogypsum, 10, 20 and 40 g kg, under laboratory conditions. The amounts of Zn, Cd and Pb in several organs of the clam was determined using inductively coupled plasma optical emission spectroscopy (ICP-OES).

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Synthesized Mn-doped ZnS nanoparticles, with 10% of Mn dopant, were used to investigate their environmental toxicity. Mn-doped ZnS quantum dots (QDs) stabilized by 3-mercaptopropionic acid (MPA) were synthesized in a basic aqueous solution using the nucleation doping. The optical properties and structure of the obtained Mn (10%):ZnS QDs have been characterized by X-ray diffraction, UV-vis, photoluminescence spectroscopies and transmission electron microscopy.

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The present study was designed to investigate the effect of carbaryl (carbamate insecticide) on the acetylcholinesterase activity in two strains (same clone A) of the crustacean cladoceran Daphnia magna. Four carbaryl concentrations (0.4, 0.

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