Inherited
metabolic diseases involving GalCer
Krabbe’s globoid cell leukodystrophy is
a rapidly progressive and invariably fatal disease of children. It is
characterized by the presence of globoid cells (cells that have more than one
nucleus) in demyelinated portions of the brain. The cause of Krabbe’s disease
is a deficient activity of an enzyme called ‘galactocerebroside β-galactosidase’. This lysosomal
enzyme normally cleaves GalCer to ceramide and galactose. This activity is
essential for myelin metabolism.