Cholinesterases of marine teleost fish: enzymological characterization and potential use in the monitoring of neurotoxic contamination

Biochemical biomarkers of exposure to deltamethrin in freshwater fish, Ancistrus multispinis

“…Although not data about deltamethrin effects in this species of fish have been shown in the literature, inhibition results were found by pyrethroids in other fish species (Reddy andPhilip, 1994, Szegletes et al , 1995;Bálint et al, 1995), including deltamethrin. According to Sturm et al, (1999), the no enzymespecific pollutants need to be in high concentration to cause inhibition (Sturm et al 1999).…”

Methylmercury accumulation, histopathology effects, and cholinesterase activity alterations in medaka (Oryzias latipes) following sublethal exposure to methylmercury chloride

“…BuChE is mainly found in serum but is also present in liver, muscle, and other tissues (Monteiroa et al, 2005). Both AChE and BuChE contribute to ChE activity in aquatic organisms (Sturm et al, 1999(Sturm et al, , 2000. Effects of mercury and its derivatives on ChE activity alteration have been widely reported in many previous works (Olson and Christensen, 1980;Suresh et al, 1992;Schmidt and Ibrahim, 1994;Devi and Fingerman, 1995).…”

Brain acetylcholinesterase as a marine pesticide biomarker using Brazilian fishes

“…In addition to traditional chemical analysis, activity of the enzyme acetylcholinesterase (AChE) has been used for environmental monitoring programs (Burgeot, Bocquéné, Porte, Dimet, Santella, Garcia de la Parra et al, 1996;Huang, Obih, Jaiswal, Hartley, & Thiyagarajah (1997);Minier, Levy, Rabel, Bocquéné, Godefroy, Burgeot et al, 2000) because AChE inhibition in tissues of fish and other animals can be used as biomarker for organophosphorous and carbamates exposure (Escartin & Porte, 1996;Sturn, Silva de Assis, & Hansen, 1999). Inhibition of AChE is not necessarily fatal, but using a fish with a highly sensitive AChE as a sentinel species will allow the detection of lower contamination levels.…”