Neuroserpin Mutation S52R Causes Neuroserpin Accumulation in Neurons and Is Associated with Progressive Myoclonus Epilepsy

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Neuroserpin mutation S52R causes neuroserpin accumulation in neurons and is associated with progressive myoclonus epilepsy.

Mutations in the Neuroserpin gene have been reported to cause familial presenile dementia. We describe a new family in which the S52R Neuroserpin mutation is associated with progressive myoclonus epilepsy in 2 siblings. The proband presented myoclonus and epilepsy at age 24, his brother and mother presented a similar disorder when they were 25. A clinical diagnosis of progressive myoclonus epil...

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Mutation in the mitochondrial tRNAIle gene causes progressive myoclonus epilepsy

PURPOSE The group of the rare progressive myoclonic epilepsies (PME) include a wide spectrum of mitochondrial and metabolic diseases. In juvenile and adult ages, MERRF (myoclonic epilepsy with ragged red fibres) is the most common form. The underlying genetic defect in most patients with the syndrome of MERRF is a mutation in the tRNALys gene, but mutations were also detected in the tRNAPhe gen...

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Mutation-, aging-, and gene dosage-dependent accumulation of neuroserpin (G392E) in endoplasmic reticula and lysosomes of neurons in transgenic mice.

Mutations in human neuroserpin gene cause an autosomal dementia, familial encephalopathy with neuroserpin inclusion bodies (FENIB). We generated and analyzed transgenic mice expressing high levels of either FENIB-type (G392E) or wild-type human neuroserpin in neurons of the central nervous system. G392E neuroserpin accumulated age-dependently in neurons of the neocortex, thalamus, amygdala, pon...

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Latent S49P neuroserpin forms polymers in the dementia familial encephalopathy with neuroserpin inclusion bodies.

The serpinopathies result from conformational transitions in members of the serine proteinase inhibitor superfamily with aberrant tissue deposition or loss of function. They are typified by mutants of neuroserpin that are retained within the endoplasmic reticulum of neurons as ordered polymers in association with dementia. We show here that the S49P mutant of neuroserpin that causes the dementi...

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A homozygous mutation in human PRICKLE1 causes an autosomal-recessive progressive myoclonus epilepsy-ataxia syndrome.

Progressive myoclonus epilepsy (PME) is a syndrome characterized by myoclonic seizures (lightning-like jerks), generalized convulsive seizures, and varying degrees of neurological decline, especially ataxia and dementia. Previously, we characterized three pedigrees of individuals with PME and ataxia, where either clinical features or linkage mapping excluded known PME loci. This report identifi...

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ژورنال

عنوان ژورنال: Journal of Neuropathology & Experimental Neurology

سال: 2000

ISSN: 0022-3069,1554-6578

DOI: 10.1093/jnen/59.12.1070