L'acétylcholinestérase du système olfactif de la carpe Cyprinus carpio L. (poissons, Cyprinidae): formes moléculaires et inhibition in vivo et in vitro par le carbofuran = The acetylcholinesterase of the olfactory system of the carp Cyprinus carpio L. (fishes, Cyprinidae): molecular forms and inhibition in vivo and in vitro by carbofuran
Haubruge, E.; Toutant, J.-P. (1997). L'acétylcholinestérase du système olfactif de la carpe Cyprinus carpio L. (poissons, Cyprinidae): formes moléculaires et inhibition in vivo et in vitro par le carbofuran = The acetylcholinesterase of the olfactory system of the carp Cyprinus carpio L. (fishes, Cyprinidae): molecular forms and inhibition in vivo and in vitro by carbofuran. Belg. J. Zool. 127(1): 63-73
In: Belgian Journal of Zoology. Koninklijke Belgische Vereniging voor Dierkunde = Société royale zoologique de Belgique: Gent. ISSN 0777-6276; e-ISSN 2295-0451, more
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- Haubruge, E.
- Toutant, J.-P.
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| Abstract |
The use of pesticides in agriculture and in insect control has been creating a potential danger to aquatic life and human health. Acetylcholinesterase, an enzyme regulating nerve-impulse transmission, is reported to be inhibited by carbamates and organophosphates in many living systems including aquatic organisms. AChE is also present in the entire olfactory organ of the common carp Cyprins carpio The native molecular forms of AchE present in olfactory organ have been characterized by sedimentation analysis in sucrose gradients. AChE exists as gobular and asymmetric forms. The reduction of olfactory organ AChE activity is already perceptible at sublethal concentrations of carbofuron. The results show an inhibition of olfactory organ AChE ranging from 33,4% to 49,3% after 48 hours. This makes the AChE activity a potential biochemical indicator of toxic stress in fishes and a sensitive test fo the presence of carbamates and organophosphates in water. |
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