. Differential cortical and striatal astrocytes transporters expression and TNF-alpha

TURATI J; DE LAURENTIIS A; CARUSO C; SABA J; RAMIREZ D; DURAND D; LOPEZ COUSELO F; CARNIGLIA L; LASAGA M

Mar del Plata

Congreso; Reunion Anual de la SAIC; 2018

SAIC

Astrocytes provide metabolic and structural support to the brain and are essential partners in neurotransmission and behavior. GLT1 and GLAST glutamate transporters in astrocytes do most of the work by clearing extracellular glutamate. Their expression and activity are influenced by cytokines, growth factors and reactive oxygen species (ROS). We have previously shown that brain-derived neurotrophic factor (BDNF) reduces ROS accumulation in astrocytes and neurons induced by 3-nitropropionic acid (3-NP), a toxin that causes mitochondrial dysfunction and oxidative stress as it occurs in Huntington?s disease (HD). Being the striatum more susceptible to 3-NP, here we investigated BDNF effect on glutamate transporters expression in primary cortical and striatal astrocytes. Astrocytes were incubated for 24 h with 3-NP ± BDNF. BDNF increased GLT1 expression in cortical and striatal astrocytes per se and in the presence of 3-NP (p