IDIM   12530
INSTITUTO DE INVESTIGACIONES MEDICAS
Unidad Ejecutora - UE
artículos
Título:
Oxidative stress induces arginine kinase expression in Trypanosoma cruzi.
Autor/es:
MIRANDA, MARIANA; CANEPA, GASPAR; BOUVIER, LEON; PEREIRA, CA
Revista:
EXPERIMENTAL PARASITOLOGY
Editorial:
Elsevier
Referencias:
Año: 2006 vol. 114 p. 341 - 344
ISSN:
0014-4894
Resumen:
Trypanosoma cruzi arginine kinase is a key enzyme in cell energy management and is also involved in pH and nutritional stress
response mechanisms. T. cruzi epimastigotes treated with hydrogen peroxide presented a time-dependent increase in arginine kinase
expression, up to 10-fold, when compared with untreated parasites. Among other oxidative stress-generating compounds tested, only nifurtimox
produced more than 2-fold increase in arginine kinase expression. Moreover, parasites overexpressing arginine kinase showed
signiWcantly increased survival capability during hydrogen peroxide exposure. These Wndings suggest the participation of arginine kinase
in oxidative stress response systems.arginine kinase is a key enzyme in cell energy management and is also involved in pH and nutritional stress
response mechanisms. T. cruzi epimastigotes treated with hydrogen peroxide presented a time-dependent increase in arginine kinase
expression, up to 10-fold, when compared with untreated parasites. Among other oxidative stress-generating compounds tested, only nifurtimox
produced more than 2-fold increase in arginine kinase expression. Moreover, parasites overexpressing arginine kinase showed
signiWcantly increased survival capability during hydrogen peroxide exposure. These Wndings suggest the participation of arginine kinase
in oxidative stress response systems.T. cruzi epimastigotes treated with hydrogen peroxide presented a time-dependent increase in arginine kinase
expression, up to 10-fold, when compared with untreated parasites. Among other oxidative stress-generating compounds tested, only nifurtimox
produced more than 2-fold increase in arginine kinase expression. Moreover, parasites overexpressing arginine kinase showed
signiWcantly increased survival capability during hydrogen peroxide exposure. These Wndings suggest the participation of arginine kinase
in oxidative stress response systems.Wcantly increased survival capability during hydrogen peroxide exposure. These Wndings suggest the participation of arginine kinase
in oxidative stress response systems.