What condition is caused by alpha-1 fucosidase deficiency?

What condition is caused by alpha-1 fucosidase deficiency?

• A. Mucopolysaccharidosis IV type A
• B. Fucosidosis
• C. Hurler syndrome
• D. Sialidosis

Answer: (B)

Fucosidosis is a lysosomal storage disorder that arises from a deficiency of the enzyme alpha-1 fucosidase. This enzyme is critical for the breakdown of fucosylated glycoproteins and glycolipids. When alpha-1 fucosidase is deficient or absent, substrates that normally would be degraded accumulate in the lysosomes, leading to a range of clinical manifestations. Patients with fucosidosis typically present with symptoms that may include developmental delay, skeletal abnormalities, and facial dysmorphisms. These are a direct consequence of the accumulation of fucose-containing compounds due to the metabolic block. One distinguishing feature of fucosidosis is the presence of specific clinical and biochemical markers that differentiate it from other lysosomal storage disorders. In contrast, the other conditions listed are associated with different enzyme deficiencies and metabolic pathways. Mucopolysaccharidosis IV type A is due to a deficiency in the enzyme N-acetylgalactosamine-6-sulfate sulfatase, Hurler syndrome is a result of the deficiency of alpha-L-iduronidase, and sialidosis is caused by a deficiency in sialidase. Each of these conditions involves different substrates and associated clinical presentations, further highlighting the specificity of

Fucosidosis is a lysosomal storage disorder that arises from a deficiency of the enzyme alpha-1 fucosidase. This enzyme is critical for the breakdown of fucosylated glycoproteins and glycolipids. When alpha-1 fucosidase is deficient or absent, substrates that normally would be degraded accumulate in the lysosomes, leading to a range of clinical manifestations.

Patients with fucosidosis typically present with symptoms that may include developmental delay, skeletal abnormalities, and facial dysmorphisms. These are a direct consequence of the accumulation of fucose-containing compounds due to the metabolic block. One distinguishing feature of fucosidosis is the presence of specific clinical and biochemical markers that differentiate it from other lysosomal storage disorders.

In contrast, the other conditions listed are associated with different enzyme deficiencies and metabolic pathways. Mucopolysaccharidosis IV type A is due to a deficiency in the enzyme N-acetylgalactosamine-6-sulfate sulfatase, Hurler syndrome is a result of the deficiency of alpha-L-iduronidase, and sialidosis is caused by a deficiency in sialidase. Each of these conditions involves different substrates and associated clinical presentations, further highlighting the specificity of