Lysosomal storage diseases Flashcards
Findings in Fabry Disease
Triad of: Peripheral neuropathy Hypohidrosis Angiokeratomas (buttocks, groin & umbilicus) Late: Cardiovascular disease Renal Failure Cerebrovascular disease
Deficient enzyme in Fabry Disease
alpha-galactosidase
Accumulated substrate in Fabry Disease
Ceramide trihexoside
Findings in Gaucher Disease
Hepatosplenomegaly Pancytopenia Bone crisis Osteoporosis Asceptic necrosis of femur
Deficient enzyme in Gaucher Disease
Glucocerebrosidase
Accumulated substrate in Gaucher Disease
Glucocerebroside
Findings in Nieman-Pick Disease
Hepatosplenomegaly
Cherry red spots on macula
Neurodegeneration
Deficient enzyme in Nieman-Pick Disease
Sphingomyelinase
Accumulated substrate in Nieman-Pick Disease
Sphingomyelin
Findings in Tay-Sachs Disease
Cherry red spots on macula
Neurodegeneration
Developmental delay
Deficient enzyme in Tay-Sachs Disease
Hexosaminidase A
Accumulated substrate in Tay-Sachs Disease
GM2 Ganglioside
Findings in Krabbe Disease
Peripheral neuropathy
Optic atrophy
Globoid cells
Developmental delay
Deficient enzyme in Krabbe Disease
Galactocerebrosidase
Accumulated substrate in Krabbe Disease
Galactocerebroside
Findings in Metachromatic Leukodistrophy
Central & peripheral demyelination - ataxia & dementia
Deficient enzyme in Metachromatic Leukodistrophy
Aryl sulfatase
Accumulated substrate in Metachromatic Leukodistrophy
Cerebroside sulfate
Findings in Hurler Syndrome
GORGOLISM Developmental delay Hepatosplenomegaly Airway obstruction Corneal clouding
Deficient enzyme in Hurler Syndrome
alpha-L-iduronidase
Accumulated substrate in Hurler Syndrome
Heparan & dermatan sulfate
Findings in Hunter Syndrome
Mild Hurler Syndrome + Aggressive behavior
Deficient enzyme in Hunter Syndrome
Iduronate-2-sulfatase
Accumulated substrate in Hunter Syndrome
Heparan & dermatan sulfate