INVESTIGADORES
BALSEIRO Esteban Gabriel
artículos
Título:
Effect of ultraviolet radiation on acetylcholinesterase activity in freshwater copepods.
Autor/es:
SOUZA, M.S.; BALSEIRO, E.G.; LASPOUMADERES, C.; MODENUTTI, B.E.
Revista:
PHOTOCHEMISTRY AND PHOTOBIOLOGY
Editorial:
Wiley Interscience
Referencias:
Año: 2010 vol. 86 p. 367 - 373
ISSN:
0031-8655
Resumen:
We analyzed the effects of UV radiation (UVR) effects onacetylcholinesterase (AChE) activity in two calanoid copepods,Boeckella gibbosa and Parabroteas sarsi that inhabit Patago-nian shallow lakes. We studied the effect of experimental UVR(UV-B and UV-A) exposure on AChE activity in relation tobasal antioxidant capacities of both copepods. Our experimentsshowed that UVR can effectively depress AChE activity,although with differences between species. In both copepodsAChE was affected by UV-B, whereas UV-A only affectedAChE in B. gibbosa. Both copepods also differed in bodyelemental composition (C:N:P), photoprotecting compound con-tent (carotenoids and mycosporine-like amino acids) and enzy-matic antioxidant capacity (glutathione S-transferase [GST]).Our results suggest that when exposed to UVR, AChE activitywould depend more on the antioxidant capacity (GST) and Pavailability for enzyme synthesis than on the photoprotectivecompounds.