INVESTIGADORES
IRAZUSTA Veronica Patricia
congresos y reuniones científicas
Título:
NEURONAL MODEL OF FRIEDREICH ATAXIA DISPLAYS DECREASED SOD ACTIVITIES
Autor/es:
VERÓNICA IRAZUSTA; ELIA OBIS; JOAQUIM ROS; JORDI TAMARIT
Lugar:
Zaragosa, España
Reunión:
Workshop; II Workshop On Reactive Oxygen Species And Systems; 2009
Institución organizadora:
Rosasnet, Reactive Oxygen Species and Systems
Resumen:
Friedreich's
ataxia (FRDA) is a human disease caused by decreased expression of the
mitochondrial protein frataxin due to the presence of large expansions of GAA
repeats in the first intron of the nuclear gene coding for the protein. FRDA
patients suffer from multiple symptoms, including progressive gait and limb
ataxia, hypertrophic cardiomyopathy, and sometimes diabetes mellitus. Our
previous results performed with Saccharomyces cerevisiae, indicated that
Yfh1-deficient yeast cells (Dyfh1) expressed increased amounts of proteins
involved in the defense against oxidative stress, but, paradoxically, decreased
activities of mitochondrial Mn-superoxide dismutase (Mn-SOD) and cytosolic
CuZn-SOD (Irazusta et al., 2006). In the present work we developed a neuronal
human model of FRDA using shRNA technology and analyzed the amount and activity
of SOD enzymes