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Huntington disease (HD) is an inherited disorder hallmarked by progressive deterioration of specific neurons, followed by movement and cognitive anomalies. Cell therapy approaches in neurodegenerative conditions have concentrated on the replenishment of lost/dying neurons with functional ones. Multipotent mesenchymal stem cells (MSCs) have been represented as a potential remedy for HD. In this study, we evaluated the in vitro and in vivo efficacy of umbilical cord matrix stem cells (UCMSCs) and their paracrine effect against oxidative stress with a specific focus on HD. To this end, UCMSCs were isolated, immunophenotypically characterized by the positive expression of MSC markers, and exhibited multilineage potentiality. Besides, synthesis of neurotrophic factors of GDNF and VEGF by UCMSC was confirmed. Initially, PC12 cells were exposed to superoxide in the presence of conditioned media …