mucolipidoses/ataxia

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Type 1 sialidosis presenting with ataxia, seizures and myoclonus with no visual involvement.

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Sialidosis is an autosomal recessive lysosomal storage disease caused by pathogenic variants in NEU1 which encodes lysosomal sialidase (neuraminidase 1). Lysosomal neuraminidase catalyzes the removal of terminal sialic acid molecules from glycolipids, glycoproteins and oligosaccharides. Sialidosis

Variable phenotype and severity of sialidosis expressed in two siblings presenting with ataxia and macular cherry-red spots.

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Sialidosis is a rare lysosomal storage disease with a wide clinical spectrum ranging from nearly asymptomatic to severe presentations. We present two Brazilian siblings with sialidosis, the first patient with sialidosis type I, and the second with sialidosis type II. Our report reinforces the

Type I sialidosis, a normosomatic lysosomal disease, in the differential diagnosis of late-onset ataxia and myoclonus: An overview.

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Lysosomal storage diseases (LSDs) are rare to extremely rare monogenic disorders. Their incidence, however, has probably been underestimated owing to their complex clinical manifestations. Sialidosis is a prototypical LSD inherited as an autosomal recessive trait and caused by mutations in the NEU1

Reduction in Myoclonus and Ataxia Following the Use of Perampanel in Patient With Sialidosis Type 1.

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Clinical and Genetic Characteristics of Type I Sialidosis Patients in Mainland China

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Objective: Type I sialidosis (ST-1) is a rare autosomal recessive inherited disorder. To date, there has been no study on ST-1 patients in mainland China. Methods: We reported in detail the cases of five Chinese ST-1 patients from

[A case of middle-aged onset sialidosis type I].

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We reported a patient with middle-aged onset sialidosis type I. A 52-year-old Japanese man was referred to our hospital because of dysarthria, involuntary movement of his extremities and gait disturbance since the age of 46 years. On admission, neurological examination revealed scanning speech,

[Mucolipidosis type I. Sialidosis due to alpha-2-6-neuraminidase deficiency with neurological symptoms].

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A case close to mucolipidosis I was observed and the description of this mucolipidosis has to be revised since there were initially some confusions with mannosidosis. Three types of abnormalities appear to be important in its distinction from the other types of oligosaccharidoses: presence on the

Adult type mucolipidosis with beta-galactosidase and sialidase deficiency. Histological and biochemical studies.

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A case of adult type mucolipidosis with beta-galactosidase and sialidase deficiency is described. This patient, a woman aged 20, had mental retardation, macular cherry-red spots, corneal clouding, gargoyle-like face, cerebellar ataxia, myoclonus and convulsions beginning at the age of 14. Bony

Sialidosis type 2 in Japan. Clinical study in two siblings' cases and review of literature.

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Clinical and biochemical findings in two siblings (24-year-old sister and 20-year-old brother), born to consanguineous parents, are described. Both showed progressive generalized myoclonus, macular cherry-red spots, moderate cerebellar ataxia, coarse facies, vertebral deformities, vacuolation of

Neuraminidase in mucolipidoses: normal activity in frozen autopsy tissues from three patients with I-cell disease and adult beta-galactosidase deficiency.

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Neuraminidase was assayed in the frozen autopsy tissues from three patients with I-cell disease and an adult patient with cherry-red spots, myoclonus, cerebellar ataxia and beta-galactosidase deficiency. Both diseases showed normal neuraminidase activity toward neuramine lactose and fetuin in

Seizure remission and improvement of neurological function in sialidosis with perampanel therapy.

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A 15-year-old boy experienced myoclonic seizures for 3 years. He initially had occasional myoclonus, gradually progressive ataxia, tremors, and psychomotor and speech regression developed. Eventually, he exhibited nearly continuous myoclonus. He received treatment of sodium valproate, levetiracetam,

Sialidoses.

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Sialidoses are autosomal recessive disorders caused by NEU1 gene mutations and are classified on the basis of their phenotype and onset age. Sialidosis type II, with infantile onset, has a more severe phenotype characterized by coarse facial features, hepatomegaly, dysostosis multiplex, and

Clinical and electrophysiological characteristics of a type 1 sialidosis patient with a novel deletion mutation in NEU1 gene.

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Type 1 sialidosis is a rare autosomal recessive lysosomal storage disease caused by Neuraminidase 1 (NEU1) gene mutations. We report a type 1 sialidosis patient with a novel deletion mutation in NEU1 and compared the phenotypes within different

Clinical and serial MRI findings of a sialidosis type I patient with a novel missense mutation in the NEU1 gene.

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The case of a Japanese sialidosis type I patient with a novel NEU1 gene mutation is described. The patient developed an unsteady gait at age 14 and was referred to our hospital at age 16. On admission, subnormal intelligence, dysarthria, myoclonus, intentional tremors, limb and gait ataxia,

Sialidosis Type 1 with a Novel Mutation in the Neuraminidase-1 (NEU1) Gene.

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A patient with Sialidosis type 1 with a novel variation in neuraminidase-1 (NEU1) is described. The patient developed ataxia and myoclonus at 9 y of age. He was born to a second degree consanguineous marriage couple. On examination child had cerebellar signs and bilateral macular cherry-red spots.

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