Abstract
GM1 gangliosidosis is a rare autosomal disease caused by the deficiency of lysosomal enzyme ²-galactosidase, which is coded by the GLB1 gene. The enzimatic activity decrease leads to GM1 and GA1 gangliosides deposition inside the lysosomes. The disease is classified in three clinical types according to age of onset, enzymatic activity and severity. The Danio rerio (zebrafish) is an inter…