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  • Title: Characterization of cholinesterase activity from different tissues of Nile tilapia (Oreochromis niloticus).
    Author: Rodríguez-Fuentes G, Gold-Bouchot G.
    Journal: Mar Environ Res; 2004; 58(2-5):505-9. PubMed ID: 15178074.
    Abstract:
    Cholinesterases (ChE) from brain, muscle and liver in Nile tilapia (Oreochromis niloticus) were characterized using three substrates: acetylthiocholine iodide, propionylthiocholine iodide, and butyrylthiocholine iodide. Eserine was used as a total ChE inhibitor; BW284c51 and iso-OMPA were used as selective inhibitors for acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE), respectively. The results indicate that AChE is the enzyme present in brain, whereas in both liver and muscle, the presence of atypical ChEs are suggested. These findings indicate that characterization of ChE is necessary prior to use in monitoring programs.
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