BDNF effect on mitochondrial dysfunction induced by 3-nitropropionic acid in striatal astrocytes

LOPEZ COUSELO FEDERICO; JULIETA SABA; TURATI, JUAN; DELIA RAMÍREZ; CARNIGLIA, LILA; DANIELA DURAND; LASAGA, MERCEDES; CARLA CARUSO

Mar del Plata

Congreso; Reunión anual de la sociedad argentina de investigación clínica; 2018

saic

Huntington disease (HD) promotes oxidative stress, mitochondrial dysfunction and neurotoxicity that primarily affect the striatum. 3-nitropropionic acid (3-NP), generates mitochondrial dysfunction and oxidative stress as it occurs in HD. High levels of reactive oxygen species (ROS) produced in the mitochondrial matrix generate oxidative stress which is associated with neuronal death. Uncoupling proteins (UCP) are proton transporters of the inner mitochondrial membrane that uncouple the electron transport chain from oxidative phosphorylation. UCP4, which is expressed in astrocytes, appears to be involved in the reduction of ROS levels in the inner mitochondrial membrane. Also, UCP4 overexpression protects neurons from mitochondrial dysfunction. We have previously shown that brain-derived neurotrophic factor (BDNF) reduces ROS levels and prevents apoptosis induced by 3-NP in cortical astrocytes. Now, we studied BDNF effects on striatal astrocytes viability, ROS production and UCP4 expression. BDNF had a significant protective effect on 3-NP-induced death of striatal astrocytes determined by trypan blue exclusion (p