Metachromatic leukodystrophy (MLD) is an autosomal recessive demyelinating lysosomal storage disease caused by deficiency of lysosomal arylsulfatase A (ARSA). The enzyme defect results in the accumulation of sulfatide in the central and peripheral nervous systems and extensive white matter damage and loss of both cognitive and motor functions. Mutated PSAP gene resulting in sphingolipid activator protein B deficiency is known to cause MLD variant in which ARSA is normal.
Kuchar L, Ledvinova J, Hrebicek M, Myskova H, Dvorakova L, Berna L, Chrastina P, Asfaw B, Elleder M, Petermoller M, Mayrhofer H, Staudt M, Krageloh-Mann I, Paton BC, Harzer K
タイトル
Prosaposin deficiency and saposin B deficiency (activator-deficient metachromatic leukodystrophy): report on two patients detected by analysis of urinary sphingolipids and carrying novel PSAP gene mutations.
