Acute effects of chlorpyryphos-ethyl and secondary treated e uents on
acetylcholinesterase and butyrylcholinesterase
activities in Carcinus maenas |
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Authors: | Jihene Ghedir Jamel Jebali Zied Bouraoui Mohamed Banni Lassaad Chouba and Hamadi Boussetta |
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Institution: | aLaboratory of Biochemical and Environmental Toxicology, Higher Institute of Agriculture, Chott-Mariem, 4042 Sousse, Tunisia;bChemical Laboratory, Higher Institute of Marine Sciences and Technology, La Goulette Center, 2060, Tunisia |
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Abstract: | The acute effects of commercial formulation of chlorpyrifos-ethyl (Dursbanr®) and the secondary treated industrial/urban effluent (STIUE) exposure on acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activities in hepatopancreas and gills of Mediterranean crab Carcinus maenas were investigated. After 2 d of exposure to chlorpyriphos-ethyl, the AChE activity was inhibited in both organs at concentrations of 3.12 and 7.82 μ/L, whereas the BuChE was inhibited only at higher concentration 7.82 μ/L of commercial preparation Dursbanr®. The exposure of crabs to Dursbanr® (3.12 μ/L) showed a significant decrement of AChE activity at 24 and 48 h, whereas the BuChE was inhibited only after 24 h and no inhibition for both enzymes was observed after 72 h. Moreover, a significant repression of AChE activity was observed in both organs of C. maenas exposed to 5% of STIUE. Our experiments indicated that the measurement of AChE activity in gills and hepatopancreas of C. maenas would be useful biomarker of organophosphorous (OP) and of neurotoxic effects of STIUE in Tunisia. |
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Keywords: | acetylcholinesterase butyrylcholinesterase organophosphorous Dursbanr® secondary treated industrial/urban effluent Carcinus maenas |
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