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Recent News and Articles on the Keywords: lafora disease + laforin gene + gene  Related to the article below (Last Update: 7/1/2008)

Help For Queens Families Battling Serious Illness
Queens Chronicle, NY - Jun 12, 2008
Friends of Karen was named for Karen MacInnes, a 16-year-old North Salem, NY girl who suffered from Lafora?s disease ? a form of epilepsy that attacks the ...
Source: Google News

Mutations in a gene encoding a novel protein tyrosine phosphatase cause progressive myoclonus … -
BA Minassian, JR Lee, JA Herbrick, J Huizenga, S … - Nature Genetics, 1998 - nature.com
... characteristic polyglucosan inclusions called Lafora bodies 4 ... might be a generalized
storage disease 6,9 ... putative protein product, named laforin, resulting in LD ...

The Lafora disease gene product laforin interacts with HIRIP5, a phylogenetically conserved protein … -
S Ganesh, N Tsurutani, T Suzuki, K Ueda, KL … - Human Molecular Genetics, 2003 - Oxford Univ Press
... The Lafora disease gene product laforin interacts with HIRIP5, a
phylogenetically conserved protein containing a NifU-like domain. ...

Identification of new and common mutations in the EPM2A gene in Lafora disease -
BA Minassian, L Ianzano, AV Delgado-Escueta, SW … - Neurology, 2000 - AAN Enterprises
... Escueta, and K. Yamakawa The Lafora disease gene product laforin interacts with
HIRIP5, a phylogenetically conserved protein containing a NifU-like domain Hum. ...

Targeted disruption of the Epm2a gene causes formation of Lafora inclusion bodies, neurodegeneration … -
S Ganesh, AV Delgado-Escueta, T Sakamoto, MR Avila … - Human Molecular Genetics, 2002 - Oxford Univ Press
... Escueta, and K. Yamakawa The Lafora disease gene product laforin interacts with
HIRIP5, a phylogenetically conserved protein containing a NifU-like domain Hum. ...

… of a novel protein interacting with laforin, the epm2a progressive myoclonus epilepsy gene product -
L Ianzano, XC Zhao, BA Minassian, SW Scherer - Genomics, 2003 - Elsevier
... cause Lafora disease. We hypothesized that EPM2AIP1 might be involved since our
functional data have shown it interacts with the EPM2A gene product laforin. ...

Mutation spectrum and predicted function of laforin in Lafora's progressive myoclonus epilepsy -
BA Minassian, L Ianzano, M Meloche, E Andermann, … - Neurology, 2000 - AAN Enterprises
... Escueta, and K. Yamakawa The Lafora disease gene product laforin interacts with
HIRIP5, a phylogenetically conserved protein containing a NifU-like domain Hum. ...

Progressive myoclonus epilepsy with polyglucosans (Lafora disease) Evidence for a third locus -
EM Chan, S Omer, M Ahmed, LR Bridges, C Bennett, … - Neurology, 2004 - AAN Enterprises
... The Lafora disease gene product laforin interacts with HIRIP5, a phylogenetically
conserved protein containing a NifU-like domain. Hum Mol Genet. ...

Regional and Developmental Expression of Epm2a Gene and Its Evolutionary Conservation -
S Ganesh, KL Agarwala, K Amano, T Suzuki, AV … - Biochemical and Biophysical Research Communications, 2001 - ingentaconnect.com
... Lafora's disease, an autosomal recessive progressive myoclonus epilepsy ... mutations
in the EPM2A gene encoding a dual-specificity phosphatase (DSP) named laforin. ...

A Unique Carbohydrate Binding Domain Targets the Lafora Disease Phosphatase to Glycogen -
J Wang, JA Stuckey, MJ Wishart, JE Dixon - Journal of Biological Chemistry, 2002 - ASBMB
... Escueta, and K. Yamakawa The Lafora disease gene product laforin interacts with
HIRIP5, a phylogenetically conserved protein containing a NifU-like domain Hum. ...

Laforin, the dual-phosphatase responsible for Lafora disease, interacts with R5 (PTG), a regulatory … -
ME Fernandez-Sanchez, O Criado-Garcia, KE Heath, B … - Human Molecular Genetics, 2003 - Oxford Univ Press
... the identification of a second gene responsible for ... the pathways through which both
laforin and malin ... the cellular physiology that results in lafora disease. ...

Source: Google Scholar
 
 

Lafora disease caused by mutations in the laforin gene

 

 
Researchers at UCSD ( University of California, San Diego ) found that Lafora disease, an inherited form of epilepsy that results in death by the age of 30, can be caused by mutations in a gene that regulates the concentration of the protein laforin.

Lafora disease is characterized by normal development for the first decade of life, followed by an initial seizure in the second decade, progressively worsening seizures, early dementia, and death within 10 years of onset. Medications can ease the severity of initial symptoms, but there is no long-term treatment or cure for the disease.

A puzzling aspect of the disease is the accumulation of starch-/glycogen-like granules in most tissues of Lafora disease patients. Thus, researchers have long thought that a defect in glycogen metabolism is intimately linked to the disease. Recessive mutations in two genes have been shown to cause Lafora disease. The genes encode the proteins laforin and malin, but the molecular mechanism defining how loss of laforin or malin causes Lafora disease has remained unclear.

Jack E. Dixon and colleagues at UCSD investigated the role of malin in Lafora disease and found that malin physically interacts with laforin and regulates laforin’s concentration by marking it for degradation.

Their results show that approximately 40 percent of patients with Lafora disease have mutations in malin that render it unable to mark laforin for degradation. This increase in laforin may lead to Lafora disease through aberrant glycogen metabolism.

The research , funded by the National Institutes of Health, has been published in Proceedings of the National Academy of Sciences ( PNAS ).

Source: University of California, San Diego, 2005
 
 
 
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