machado joseph disease

Summary

Summary: A dominantly-inherited ATAXIA first described in people of Azorean and Portuguese descent, and subsequently identified in Brazil, Japan, China, and Australia. This disorder is classified as one of the SPINOCEREBELLAR ATAXIAS (Type 3) and has been associated with a mutation of the MJD1 gene on chromosome 14. Clinical features include progressive ataxia, DYSARTHRIA, postural instability, nystagmus, eyelid retraction, and facial FASCICULATIONS. DYSTONIA is prominent in younger patients (referred to as Type I Machado-Joseph Disease). Type II features ataxia and ocular signs; Type III features MUSCULAR ATROPHY and a sensorimotor neuropathy; and Type IV features extrapyramidal signs combined with a sensorimotor neuropathy. (From Clin Neurosci 1995;3(1):17-22; Ann Neurol 1998 Mar;43(3):288-96)

Top Publications

  1. ncbi CAG expansions in a novel gene for Machado-Joseph disease at chromosome 14q32.1
    Y Kawaguchi
    Department of Pharmacology, Kyoto University Faculty of Medicine, Japan
    Nat Genet 8:221-8. 1994
  2. ncbi Expanded polyglutamine in the Machado-Joseph disease protein induces cell death in vitro and in vivo
    H Ikeda
    Department of Pharmacology, Kyoto University Faculty of Medicine, Japan
    Nat Genet 13:196-202. 1996
  3. ncbi Ubiquitination directly enhances activity of the deubiquitinating enzyme ataxin-3
    Sokol V Todi
    Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
    EMBO J 28:372-82. 2009
  4. ncbi Asian origin for the worldwide-spread mutational event in Machado-Joseph disease
    Sandra Martins
    Instituto de Patologia e Imunologia Molecular da Universidade do Porto and Faculdade de Ciências, University of Porto, Porto, Portugal
    Arch Neurol 64:1502-8. 2007
  5. ncbi CREB-binding protein modulates repeat instability in a Drosophila model for polyQ disease
    Joonil Jung
    Department of Biology, University of Pennsylvania, Philadelphila, PA 19104, USA
    Science 315:1857-9. 2007
  6. ncbi Ataxin-3 suppresses polyglutamine neurodegeneration in Drosophila by a ubiquitin-associated mechanism
    John M Warrick
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, Pennsylvania 19104, USA
    Mol Cell 18:37-48. 2005
  7. ncbi Ataxin-3 interactions with rad23 and valosin-containing protein and its associations with ubiquitin chains and the proteasome are consistent with a role in ubiquitin-mediated proteolysis
    Ellen W Doss-Pepe
    Department of Biochemistry, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, Piscataway, NJ 08854, USA
    Mol Cell Biol 23:6469-83. 2003
  8. ncbi Frequency of spinocerebellar ataxia mutations in the Kinki district of Japan
    R Matsumura
    Department of Neurology, Nishi Nara National Hospital, Hichijo, Nara
    Acta Neurol Scand 107:38-41. 2003
  9. ncbi Population genetics of wild-type CAG repeats in the Machado-Joseph disease gene in Portugal
    M Lima
    Center of Research in Natural Resources CIRN, University of the Azores, Ponta Delgada, Portugal
    Hum Hered 60:156-63. 2005
  10. ncbi Selective occurrence of TDP-43-immunoreactive inclusions in the lower motor neurons in Machado-Joseph disease
    Chun Feng Tan
    Department of Pathology, Brain Research Institute, University of Niigata, 1 757 Asahimachi, Niigata, Japan
    Acta Neuropathol 118:553-60. 2009

Research Grants

  1. Nuclear bodies and ribonucleoprotein biogenesis
    MICHAEL HEBERT; Fiscal Year: 2009
  2. Nuclear bodies and ribonucleoprotein biogenesis
    Michael D Hebert; Fiscal Year: 2010
  3. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2003
  4. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2007
  5. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2006
  6. Structures and functions of the human Josephin domain-containing proteins
    PATRICK LOLL; Fiscal Year: 2009
  7. Structures and functions of the human Josephin domain-containing proteins
    Patrick J Loll; Fiscal Year: 2010
  8. Triplet Repeat Disease:Requirement for Caspase Cleavage
    Lisa Ellerby; Fiscal Year: 2007
  9. TRIPLET REPEAT DISEASE: REQUIREMENT FOR CASPASE CLEAVAGE
    Lisa Ellerby; Fiscal Year: 2001
  10. Crystallization of Ataxin-3
    PATRICK LOLL; Fiscal Year: 2005

Detail Information

Publications174 found, 100 shown here

  1. ncbi CAG expansions in a novel gene for Machado-Joseph disease at chromosome 14q32.1
    Y Kawaguchi
    Department of Pharmacology, Kyoto University Faculty of Medicine, Japan
    Nat Genet 8:221-8. 1994
    ..Southern blot analyses and genomic cloning demonstrates the existence of related genes. These results raise the possibility that similar abnormalities in related genes may give rise to diseases similar to MJD...
  2. ncbi Expanded polyglutamine in the Machado-Joseph disease protein induces cell death in vitro and in vivo
    H Ikeda
    Department of Pharmacology, Kyoto University Faculty of Medicine, Japan
    Nat Genet 13:196-202. 1996
    ..Our results demonstrate the potential involvement of the expanded polyglutamine as the common aetiological agent for inherited neurodegenerative diseases with CAG expansions...
  3. ncbi Ubiquitination directly enhances activity of the deubiquitinating enzyme ataxin-3
    Sokol V Todi
    Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
    EMBO J 28:372-82. 2009
    ..Ataxin-3 is the first reported DUB in which ubiquitination directly regulates catalytic activity. We propose a new function for protein ubiquitination in regulating the activity of certain DUBs and perhaps other enzymes...
  4. ncbi Asian origin for the worldwide-spread mutational event in Machado-Joseph disease
    Sandra Martins
    Instituto de Patologia e Imunologia Molecular da Universidade do Porto and Faculdade de Ciências, University of Porto, Porto, Portugal
    Arch Neurol 64:1502-8. 2007
    ..Machado-Joseph disease is the most frequent dominant ataxia worldwide. Despite its frequency and presence in many populations, only 2 founder mutations have been suggested to explain its current geographic distribution...
  5. ncbi CREB-binding protein modulates repeat instability in a Drosophila model for polyQ disease
    Joonil Jung
    Department of Biology, University of Pennsylvania, Philadelphila, PA 19104, USA
    Science 315:1857-9. 2007
    ..Pharmacological treatment to normalize acetylation suppressed instability. Thus, toxic consequences of pathogenic polyQ protein may include enhancing repeat instability...
  6. ncbi Ataxin-3 suppresses polyglutamine neurodegeneration in Drosophila by a ubiquitin-associated mechanism
    John M Warrick
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, Pennsylvania 19104, USA
    Mol Cell 18:37-48. 2005
    ..Our results highlight the critical importance of host protein function in SCA3 disease and a potential therapeutic role of ataxin-3 activity for polyglutamine disorders...
  7. ncbi Ataxin-3 interactions with rad23 and valosin-containing protein and its associations with ubiquitin chains and the proteasome are consistent with a role in ubiquitin-mediated proteolysis
    Ellen W Doss-Pepe
    Department of Biochemistry, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, Piscataway, NJ 08854, USA
    Mol Cell Biol 23:6469-83. 2003
    ....
  8. ncbi Frequency of spinocerebellar ataxia mutations in the Kinki district of Japan
    R Matsumura
    Department of Neurology, Nishi Nara National Hospital, Hichijo, Nara
    Acta Neurol Scand 107:38-41. 2003
    ..To determine the frequencies of spinocerebellar ataxias (SCAs) in the Kinki district, the western part of the main island of Japan...
  9. ncbi Population genetics of wild-type CAG repeats in the Machado-Joseph disease gene in Portugal
    M Lima
    Center of Research in Natural Resources CIRN, University of the Azores, Ponta Delgada, Portugal
    Hum Hered 60:156-63. 2005
    ....
  10. ncbi Selective occurrence of TDP-43-immunoreactive inclusions in the lower motor neurons in Machado-Joseph disease
    Chun Feng Tan
    Department of Pathology, Brain Research Institute, University of Niigata, 1 757 Asahimachi, Niigata, Japan
    Acta Neuropathol 118:553-60. 2009
    ..However, the immunohistochemical findings strongly suggested that in MJD, in addition to the polyglutamine-dependent disease process, TDP-43-related pathogenesis is associated with degeneration and death of the lower motor neurons...
  11. ncbi Identification of chemical inhibitors to human tissue transglutaminase by screening existing drug libraries
    Thung S Lai
    Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
    Chem Biol 15:969-78. 2008
    ..The TGM2 inhibitors we discovered may serve as valuable lead compounds for the development of orally active TGM2 inhibitors to treat human diseases...
  12. ncbi Absence of spinocerebellar ataxia type 3/Machado-Joseph disease within ataxic patients in the Czech population
    P O Bauer
    Neurogenetic Centre of the Institute of Biology and Medical Genetics, Department of Child Neurology, 2nd Medical Faculty of Charles University and Faculty Hospital Motol, Prague, Czech Republic
    Eur J Neurol 12:851-7. 2005
    ..9). We postulate that the absence of SCA3 in the Czech population might be explained by the lack of large normal alleles and consequently a relatively small reservoir for aberrant CAG expansions at the SCA3 locus...
  13. ncbi Improvement in the molecular diagnosis of Machado-Joseph disease
    P Maciel
    UnIGENe, IBMC, Universidade do Porto, 4150-180 Porto, Portugal
    Arch Neurol 58:1821-7. 2001
    ..These strategies, developed to overcome the practical difficulties mostly in the presymptomatic and prenatal diagnosis of MJD, should prove useful for other polyglutamine-related disorders...
  14. ncbi Frequency analysis of autosomal dominant cerebellar ataxias in Taiwanese patients and clinical and molecular characterization of spinocerebellar ataxia type 6
    W Soong B
    Department of Neurology, National Yang Ming University School of Medicine, Taipei, Taiwan, Republic of China
    Arch Neurol 58:1105-9. 2001
    ..The prevalence of SCA in the ethnic Chinese on Taiwan remains unclear. Moreover, there has been no report of SCA type 6 (SCA6) among Chinese people...
  15. ncbi Homozygosity enhances severity in spinocerebellar ataxia type 3
    Daniel R Carvalho
    Genetic Unit, Sarah Network of Rehabilitation Hospitals, Brasilia, DF, Brazil
    Pediatr Neurol 38:296-9. 2008
    ..This case supports the conclusion that homozygosity aggravates the clinical phenotype. Loss of function of the normal expressed ataxin-3, or possibly aggregation of ataxin-3, may be implicated in disease mechanism...
  16. ncbi Immunohistochemical study of neuronal intranuclear and cytoplasmic inclusions in Machado-Joseph disease
    Masahiro Hayashi
    Department of Neuropsychiatry, National Hokuriku Hospital, Nobusue, Jouhana machi, Toyama, Japan
    Psychiatry Clin Neurosci 57:205-13. 2003
    ..It is noteworthy that the nuclei of the spinal motoneurons lacked 1C2-positive immunoreactivity, so that ubiquitination of 1C2-positive structures is presumed to occur late in the course of the disease...
  17. ncbi The polyglutamine neurodegenerative protein ataxin 3 regulates aggresome formation
    Barrington G Burnett
    Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104 6084, USA
    Proc Natl Acad Sci U S A 102:4330-5. 2005
    ..These same mutations decrease the association of AT3 and dynein. These data indicate that the deubiquitylating activity of AT3 and its ubiquitin interacting motifs as well play essential roles in CFTRDeltaF508 aggresome formation...
  18. ncbi A mutant ataxin-3 putative-cleavage fragment in brains of Machado-Joseph disease patients and transgenic mice is cytotoxic above a critical concentration
    Daniel Goti
    Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
    J Neurosci 24:10266-79. 2004
    ....
  19. ncbi [Analysis and application of SCA1 and SCA3/MJD gene CAG repeats in Han population in Northeastern China]
    Miao Jiang
    Department of Medical Genetics, China Medical University, Shenyang, Liaoning, PR China
    Zhonghua Yi Xue Yi Chuan Xue Za Zhi 21:83-5. 2004
    ..CONCLUSION: The normal ranges of CAG repeats vary with areas and races. SCAs genotyping is the first choice in presymptomatic and prenatal diagnosis...
  20. ncbi Degeneration of the central vestibular system in spinocerebellar ataxia type 3 (SCA3) patients and its possible clinical significance
    U Rüb
    Institute for Clinical Neuroanatomy, Johann Wolfgang Goethe University, Theodor Stern Kai, Frankfurt Main, Germany
    Neuropathol Appl Neurobiol 30:402-14. 2004
    ..The reported lesions can help to explain the truncal and postural instability as well as the impaired optokinetic nystagmus, vestibulo-ocular reaction, and horizontal gaze-holding present in SCA3 cases...
  21. ncbi Spinocerebellar ataxias types 2 and 3: degeneration of the pre-cerebellar nuclei isolates the three phylogenetically defined regions of the cerebellum
    U Rüb
    Institute of Clinical Neuroanatomy, J W Goethe University, Frankfurt Main, Germany
    J Neural Transm 112:1523-45. 2005
    ....
  22. ncbi Variation of CAG repeats and two intragenic polymorphisms at SCA3 locus among Machado-Joseph disease/SCA3 patients and diverse normal populations from eastern India
    B Chattopadhyay
    Crystallography and Molecular Biology Division, Saha Institute of Nuclear Physics, Kolkata, India
    Acta Neurol Scand 108:407-14. 2003
    ..SCA3 mutation in Indian populations had the same origin as found worldwide...
  23. ncbi Founder haplotype for Machado-Joseph disease in the Indian population: novel insights from history and polymorphism studies
    Uma Mittal
    Functional Genomics Unit, Institute of Genomics and Integrative Biology, New Delhi, India
    Arch Neurol 62:637-40. 2005
    ..Detailed haplotype analysis of a CAG variant within the repeat tract in an intermediate allele of MJD suggests a mechanism of gene conversion in the expansion...
  24. ncbi The p62 antibody reveals various cytoplasmic protein aggregates in spinocerebellar ataxia type 6
    K Seidel
    Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Germany
    Clin Neuropathol 28:344-9. 2009
    ....
  25. ncbi Caspase-mediated proteolysis of the polyglutamine disease protein ataxin-3
    Sarah J Shoesmith Berke
    Neuroscience Graduate Program and Department of Neurology, University of Iowa, Iowa City, Iowa 52242, USA
    J Neurochem 89:908-18. 2004
    ..Finally, caspase-mediated cleavage of expanded ataxin-3 resulted in increased ataxin-3 aggregation, suggesting a potential role for caspase-mediated proteolysis in spinocerebellar ataxia type-3 pathogenesis...
  26. ncbi Elucidation of ataxin-3 and ataxin-7 function by integrative bioinformatics
    Hartmut Scheel
    Bioinformatics Group, Memorec Biotec GmbH, Koln, Germany
    Hum Mol Genet 12:2845-52. 2003
    ..Ataxin-3, the protein mutated in Machado Joseph Disease (SCA3), belongs to a novel group of cysteine-proteases and is predicted to be active against ubiquitin ..
  27. ncbi Spinocerebellar ataxia type 3 (SCA3): thalamic neurodegeneration occurs independently from thalamic ataxin-3 immunopositive neuronal intranuclear inclusions
    Udo Rüb
    Institute for Clinical Neuroanatomy, Johann Wolfgang Goethe Univeristy, Frankfurt Main, Germany
    Brain Pathol 16:218-27. 2006
    ..This lack of correlation may suggest that ataxin-3 immunopositive NI are not immediately decisive for the fate of affected nerve cells but rather represent unspecific and pathognomonic morphological markers of SCA3...
  28. ncbi Involvement of the cerebral cortex and autonomic ganglia in Machado-Joseph disease
    M Yamada
    Department of Pathology, Brain Research Institute, Niigata University, Japan
    Acta Neuropathol 101:140-4. 2001
    ..These lesions, newly recognized by polyglutamine immunohistochemistry, may be responsible for the cerebral cortical dysfunctions or autonomic abnormalities pointed out in MJD patients by the recent clinical and neuroradiological studies...
  29. ncbi Calpain inhibition is sufficient to suppress aggregation of polyglutamine-expanded ataxin-3
    Annette Haacke
    Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
    J Biol Chem 282:18851-6. 2007
    ..These findings suggest a critical role of calpains in the pathogenesis of Spinocerebellar ataxia type 3...
  30. ncbi Recruitment and the role of nuclear localization in polyglutamine-mediated aggregation
    M K Perez
    Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
    J Cell Biol 143:1457-70. 1998
    ..In addition, we demonstrate that the nuclear environment may be critical for seeding polyglutamine aggregates...
  31. ncbi Nuclear localization of ataxin-3 is required for the manifestation of symptoms in SCA3: in vivo evidence
    Ulrike Bichelmeier
    Department of Medical Genetics, University of Tubingen, D 72076 Tubingen, Germany
    J Neurosci 27:7418-28. 2007
    ..These studies indicate that nuclear localization of ataxin-3 is required for the manifestation of symptoms in SCA3 in vivo...
  32. ncbi Study of three intragenic polymorphisms in the Machado-Joseph disease gene (MJD1) in relation to genetic instability of the (CAG)n tract
    P Maciel
    Centre for Research in Neuroscience, McGill University, Canada
    Eur J Hum Genet 7:147-56. 1999
    ....
  33. ncbi Functional genomics and biochemical characterization of the C. elegans orthologue of the Machado-Joseph disease protein ataxin-3
    Ana João Rodrigues
    Life and Health Sciences Research Institute, Health Sciences School, University of Minho, Campus de Gualtar, 4710 057 Braga, Portugal
    FASEB J 21:1126-36. 2007
    ..This gene identification provides important clues that can help elucidate the specific biological role of ataxin-3 and unveil some of the physiological effects caused by its absence or diminished function...
  34. ncbi A mutant ataxin-3 fragment results from processing at a site N-terminal to amino acid 190 in brain of Machado-Joseph disease-like transgenic mice
    Veronica F Colomer Gould
    Department of Psychiatry, Johns Hopkins University School of Medicine, 600 N Wolfe Street, Meyer Research Building, Room 4 158, Baltimore, MD 21287, USA
    Neurobiol Dis 27:362-9. 2007
    ..Our results support the toxic fragment hypothesis and narrow the mutant ataxin-3 cleavage site to the N-terminus of amino acid 190...
  35. ncbi Consistent affection of the central somatosensory system in spinocerebellar ataxia type 2 and type 3 and its significance for clinical symptoms and rehabilitative therapy
    Udo Rüb
    Department of Clinical Neuroanatomy, J W Goethe University, Theodor Stern Kai 7, D 60590 Frankfurt Main, Germany
    Brain Res Rev 53:235-49. 2007
    ....
  36. ncbi New insights into the pathoanatomy of spinocerebellar ataxia type 3 (Machado-Joseph disease)
    Udo Rüb
    Institute for Clinical Neuroanatomy, J W Goethe University, D 60590 Frankfurt Main, Germany
    Curr Opin Neurol 21:111-6. 2008
    ..This review summarizes recent neuropathological findings in spinocerebellar ataxia type 3 and discusses their relevance for clinical neurology...
  37. ncbi Guidelines for the pathoanatomical examination of the lower brain stem in ingestive and swallowing disorders and its application to a dysphagic spinocerebellar ataxia type 3 patient
    U Rüb
    Department of Clinical Neuroanatomy, Johann Wolfgang Goethe University, Frankfurt, Germany
    Neuropathol Appl Neurobiol 29:1-13. 2003
    ....
  38. ncbi Machado-Joseph disease gene product is a cytoplasmic protein widely expressed in brain
    H L Paulson
    Department of Pharmacology, University of Pennsylvania, Philadelphia 19104, USA
    Ann Neurol 41:453-62. 1997
    ..The restricted expression of ataxin-3 in certain regions, however, may influence the pattern of neurodegeneration and provide clues to the protein's function...
  39. ncbi Spinocerebellar ataxia type 3 phenotypically resembling parkinson disease in a black family
    K Gwinn-Hardy
    Mayo Clinic Jacksonville, 4500 San Pablo Rd, Jacksonville, FL 32224, USA
    Arch Neurol 58:296-9. 2001
    ..However, classically, atypical features, including pyramidal and cerebellar signs, peripheral neuropathy, and/or anterior horn cell dysfunction, are also seen. Levodopa responsiveness is unusual in this disorder...
  40. ncbi Study of subcellular localization and proteolysis of ataxin-3
    Chiara Pozzi
    Dipartimento di Biotecnologie e Bioscienze, Universita di Milano Bicocca, P za della Scienza 2, 20126 Milan, Italy
    Neurobiol Dis 30:190-200. 2008
    ..This may play a role in the pathogenesis, hampering degradation of aggregation-prone expanded AT-3. In addition, autolytic cleavage was apparently not involved in AT-3 proteolysis...
  41. ncbi Trinucleotide expansion within the MJD1 gene presents clinically as spinocerebellar ataxia and occurs most frequently in German SCA patients
    L Schols
    Department of Neurology, St Josef Hospital, Bochum, Germany
    Hum Mol Genet 4:1001-5. 1995
    ..These results demonstrate that the MJD mutation causes the disease phenotype of most SCA patients in Germany...
  42. ncbi Dominantly inherited ataxias: lessons learned from Machado-Joseph disease/spinocerebellar ataxia type 3
    Henry L Paulson
    Department of Neurology, University of Iowa College of Medicine, Iowa City, Iowa 52242, USA
    Semin Neurol 27:133-42. 2007
    ..Also discussed are current and future therapeutic opportunities for MJD/SCA3 in particular, many of which have relevance to other SCAs...
  43. ncbi Characterization of the structure and the amyloidogenic properties of the Josephin domain of the polyglutamine-containing protein ataxin-3
    Laura Masino
    National Institute for Medical Research, The Ridgeway, London NW7 1AA, UK
    J Mol Biol 344:1021-35. 2004
    ..Our data support a mechanism in which the thermodynamic stability of ataxin-3 is governed by the properties of the Josephin domain, but the presence of an expanded polyQ tract increases dramatically the protein's tendency to aggregate...
  44. ncbi Cis-acting factors promoting the CAG intergenerational instability in Machado-Joseph disease
    Sandra Martins
    IPATIMUP Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Portugal
    Am J Med Genet B Neuropsychiatr Genet 147:439-46. 2008
    ..In summary, our findings point to different mechanisms of instability underlying male and female meioses, as well as contraction and expansion processes in MJD...
  45. ncbi Prenatal diagnosis of Machado-Joseph disease/Spinocerebellar Ataxia Type 3 in Taiwan: early detection of expanded ataxin-3
    Hui-Fang Tsai
    Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, Republic of China
    J Clin Lab Anal 17:195-200. 2003
    ..Early detection of both normal and expanded ataxin-3 in fetal tissues was first demonstrated in the present study...
  46. ncbi Genetic polymorphism of MJD1 alleles and molecular analysis of SCA3 patients from Rio de Janeiro, Brazil
    Raquel S Gestinari
    , , , Universidade do Estado do Rio de Janeiro, Brazil
    Genet Test 8:281-5. 2004
    ..We also detected expanded alleles with 68-73 CAG repeats in 3 out of 9 ataxic patients...
  47. ncbi Misfolding promotes the ubiquitination of polyglutamine-expanded ataxin-3, the defective gene product in SCA3/MJD
    Nihar Ranjan Jana
    Cellular and Molecular Neuroscience Laboratory, National Brain Research Centre, Manesar, Gurgaon 122 050, India
    Neurotox Res 6:523-33. 2004
    ....
  48. ncbi The shortest expanded allele of the MJD1 gene in a Chinese MJD kindred with autonomic dysfunction
    Weihong Gu
    National Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, PR China
    Eur Neurol 52:107-11. 2004
    ....
  49. ncbi Structural and functional analysis of the Josephin domain of the polyglutamine protein ataxin-3
    Michelle K M Chow
    Department of Biochemistry and Molecular Biology, P.O. Box 13D, Monash University, Vic. 3800, Australia
    Biochem Biophys Res Commun 322:387-94. 2004
    ..However, its presence destabilizes the Josephin domain. The implications of these data in the pathogenesis of polyglutamine repeat proteins are discussed...
  50. ncbi Identification of a novel 45 repeat unstable allele associated with a disease phenotype at the MJD1/SCA3 locus
    Quasar Saleem Padiath
    Functional Genomics Unit, Institute of Genomics and Integrative Biology Formerly Centre for Biochemical Technology, CSIR, Delhi, India
    Am J Med Genet B Neuropsychiatr Genet 133:124-6. 2005
    We report a three generation Indian pedigree with the proband having 45 repeats at the Machado Joseph Disease (MJD)/spinocerebellar ataxia 3 (SCA3) disease locus...
  51. ncbi Survival estimates for patients with Machado-Joseph disease (SCA3)
    C Kieling
    Medical Genetics Service, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
    Clin Genet 72:543-5. 2007
    ..Early onset and large CAG length predicted shorter overall survival times. This study presents quantitative data on the impact of MJD on overall survival, a phenomenon that is related to CAG length, age at onset, and year of birth...
  52. ncbi Full-length expanded ataxin-3 enhances mitochondrial-mediated cell death and decreases Bcl-2 expression in human neuroblastoma cells
    Hui-Fang Tsai
    Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC
    Biochem Biophys Res Commun 324:1274-82. 2004
    ....
  53. ncbi Spinocerebellar ataxia types 2 and 3 segregating simultaneously in a single family
    Marcondes C Franca
    Department of Neurology, Universidade Estadual de Campinas UNICAMP, Campinas, Brazil
    Mov Disord 21:1051-3. 2006
    ..In such situations, molecular confirmation of all patients may avoid misdiagnosis of SCA subtypes and eventual errors in predictive testing of unaffected family members...
  54. ncbi Brainstem in Machado-Joseph disease: atrophy or small size?
    Y Horimoto
    Choju Medical Institute, Fukushimura Hospital, Yamanaka, Noyori, Toyohashi, Japan
    Eur J Neurol 15:102-5. 2008
    ..Such differences between regions in atrophy progression must be caused by a difference in the neuropathological course...
  55. ncbi Expansion of amino acid homo-sequences in proteins: insights into the role of amino acid homo-polymers and of the protein context in aggregation
    R P Menon
    National Institute for Medical Research, London, NW7 1AA, UK
    Cell Mol Life Sci 63:1677-85. 2006
    ..The nature of the amino acid homo-sequences also has a strong influence on aggregation. From our studies, we draw general conclusions on the effect of the protein architecture and of the amino acid homo-sequence on pathology...
  56. ncbi Potassium channel dysfunction and depolarized resting membrane potential in a cell model of SCA3
    Monika Jeub
    Department of Neurology, University of Bonn Medical Center, Sigmund Freud Strasse 25, D 53105 Bonn, Germany
    Exp Neurol 201:182-92. 2006
    ..These findings indicate that electrophysiological properties are altered in mutant ataxin-3 expressing neuronal cells and may contribute to neuronal dysfunction in SCA3...
  57. ncbi Effects of SCA1, MJD, and DPRLA triplet repeat polymorphisms on cognitive phenotypes in a normal population of adolescent twins
    M Luciano
    Queensland Institute of Medical Research, Brisbane, Australia
    Am J Med Genet B Neuropsychiatr Genet 144:95-100. 2007
    ..Given the number of statistical tests performed, it is unlikely that trinucleotide repeat variation in the normal range for these genes influences variation in normal cognition...
  58. ncbi Late-onset leanness in mice with targeted ablation of melanin concentrating hormone neurons
    Tamar Alon
    Laboratory of Molecular Genetics, The Rockefeller University, New York, New York 10021, USA
    J Neurosci 26:389-97. 2006
    ..This has implications for the pathogenesis of acquired changes of body weight and might be considered in clinical settings characterized by substantial weight changes later in life...
  59. ncbi Proteolytic cleavage of polyglutamine-expanded ataxin-3 is critical for aggregation and sequestration of non-expanded ataxin-3
    Annette Haacke
    Dept. of Cellular Biochemistry, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
    Hum Mol Genet 15:555-68. 2006
    ..These results establish the critical role of C-terminal, proteolytic fragments of AT3 in the molecular pathomechanism of SCA3, in strong support of the toxic fragment hypothesis...
  60. ncbi Mouse models of Machado-Joseph disease and other polyglutamine spinocerebellar ataxias
    Veronica F Colomer Gould
    Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
    NeuroRx 2:480-3. 2005
    ....
  61. ncbi Cambodian founder effect for spinocerebellar ataxia type 3 (Machado-Joseph disease)
    Suman Jayadev
    Department of Neurology, University of Washington, USA
    J Neurol Sci 250:110-3. 2006
    ..The prevalence of the various subtypes of SCA varies worldwide from country to country. Neurologists should be alert to the possibility of SCA 3 in Cambodian patients with unexplained cerebellar ataxia...
  62. ncbi Neuronal intranuclear inclusions, dysregulation of cytokine expression and cell death in spinocerebellar ataxia type 3
    B O Evert
    Department of Neurology, University of Bonn, Germany
    Clin Neuropathol 25:272-81. 2006
    ..CONCLUSIONS: Our data suggest that the selectively affected neuronal populations in SCA3 undergo a complex alteration of gene expression independent from the formation of NI...
  63. ncbi Dynamic expression of Hsp27 in the presence of mutant ataxin-3
    Wei Hsiu Chang
    Department of Life Science, Tunghai University, Taichung, Taiwan
    Biochem Biophys Res Commun 336:258-67. 2005
    ..However, this increased Hsp27 still cannot reverse the global dysfunction of cellular proteins due to accumulation of cytotoxic effects...
  64. ncbi Spinocerebellar ataxia type 6 in Mainland China: molecular and clinical features in four families
    Hong Jiang
    Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China
    J Neurol Sci 236:25-9. 2005
    ..In the 4 families with SCA6, we found significant anticipation in the absence of genetic instability on transmission. This is the first report of geographic cluster of families with SCA6 subtype in Mainland China...
  65. ncbi A multistep mutation mechanism drives the evolution of the CAG repeat at MJD/SCA3 locus
    Sandra Martins
    IPATIMUP Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
    Eur J Hum Genet 14:932-40. 2006
    ....
  66. ncbi p45, an ATPase subunit of the 19S proteasome, targets the polyglutamine disease protein ataxin-3 to the proteasome
    Hongfeng Wang
    Hefei National Laboratory for Physical Sciences at Microscale and Department of Neurobiology, School of Life Sciences, University of Science and Technology of China, PR China
    J Neurochem 101:1651-61. 2007
    ..We also show that other three ATPases of the 19S proteasome, MSS1, p48, and p56 have no effect on ataxin-3 degradation. These data provide evidence that p45 plays an important role in regulating ataxin-3 degradation by the proteasome...
  67. ncbi Clinical and molecular events in patients with Machado-Joseph disease under lamotrigine therapy
    C-S Liu
    Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua, Taiwan
    Acta Neurol Scand 111:385-90. 2005
    ..CONCLUSION: Our results indicated that LTG may have significant benefits in relief of gait disturbance in MJD patients with early ataxia, and may be related to the decreased expression of mutant ataxin-3...
  68. ncbi Spinocerebellar ataxia type 1, 2, and 3 and restless legs syndrome: striatal dopamine D2 receptor status investigated by [11C]raclopride positron emission tomography
    Matthias Reimold
    Department of Nuclear Medicine, , Germany
    Mov Disord 21:1667-73. 2006
    ..RLS in SCA was not accompanied by a significant reduction of D(2) receptor availability in the striatum. This missing correlation may point to an extrastriatal origin of RLS...
  69. ncbi Sequence-dependent and independent inhibition specific for mutant ataxin-3 by small interfering RNA
    Yi Li
    Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
    Ann Neurol 56:124-9. 2004
    ..5%) by this siRNA possibly due to difference of the secondary structure of the target RNA. This is the first report of sequence-independent discrimination of mutant and wild-type alleles by siRNA...
  70. ncbi Site-specific mutagenesis in a homogeneous polyglutamine tract: application to spinocerebellar ataxin-3
    Yu Wai Chen
    Centre for Protein Engineering and Cambridge University Chemical Laboratory, MRC Centre, Hills Road, Cambridge CB2 2QH, UK
    Protein Eng 16:1-4. 2003
    ..The method reported here bypasses many problems that can arise from PCR-based mutagenesis methods...
  71. ncbi Expanded polyglutamine protein forms nuclear inclusions and causes neural degeneration in Drosophila
    J M Warrick
    Department of Biology, University of Pennsylvania and University of Pennsylvania Medical School, Philadelphia 19104, USA
    Cell 93:939-49. 1998
    ..Our results demonstrate that cellular mechanisms of human glutamine-repeat disease are conserved in invertebrates. This fly model will aid in identifying additional factors that modulate neurodegeneration...
  72. ncbi Chemical chaperones reduce aggregate formation and cell death caused by the truncated Machado-Joseph disease gene product with an expanded polyglutamine stretch
    Hideaki Yoshida
    Department of Neurology, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, 305 8575, Japan
    Neurobiol Dis 10:88-99. 2002
    ..Our results indicate the potentially useful therapeutic strategy of the chemical chaperones in preventing cell death in MJD...
  73. ncbi A simple method for the detection of neurologic disorders associated with CAG repeat expansion using PCR-microtiter plate hybridization
    Y Lee
    Department of Clinical Research Center, Samsung Biomedical Research Institute, Sungkyunkwan University, Samsung Medical Center, 50 Ilwon Dong, Kangnam Ku, 135 710, Seoul, South Korea
    J Biotechnol 95:215-23. 2002
    ..Also, our design of the probe is unique in that the probe motif stem from the unrelated gene sequence and not from the synthetic oligonucleotides...
  74. ncbi The genomic structure and expression of MJD, the Machado-Joseph disease gene
    Y Ichikawa
    Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
    J Hum Genet 46:413-22. 2001
    ..The sequences of these latter clones relative to the MJD gene in B445M7 indicate that there are three alternative splicing sites and eight polyadenylation signals in MJD that are used to generate the differently sized transcripts...
  75. ncbi Conserved domains and lack of evidence for polyglutamine length polymorphism in the chicken homolog of the Machado-Joseph disease gene product ataxin-3
    I Linhartova
    Institute of Biochemistry and Molecular Cell Biology, Vienna Biocenter, University of Vienna, Dr Bohr Gasse 9, A 1030, Vienna, Austria
    Biochim Biophys Acta 1444:299-305. 1999
    ..In the first such analysis in a non-primate species we found that in contrast to primates, the chicken CAG repeat is short and genetically stable...
  76. ncbi Intermediate CAG repeat lengths (53,54) for MJD/SCA3 are associated with an abnormal phenotype
    N van Alfen
    Department of Neurology, University Medical Center, Nijmegen, The Netherlands
    Ann Neurol 49:805-7. 2001
    ..Central neurological abnormalities are only present in 2. This family shows that intermediate repeat lengths can be pathogenic and may predispose for restless legs and peripheral nerve disorder...
  77. ncbi Genetic ablation of orexin neurons in mice results in narcolepsy, hypophagia, and obesity
    J Hara
    Department of Pharmacology, Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8575, Japan
    Neuron 30:345-54. 2001
    ..Orexin/ataxin-3 mice provide a valuable model for studying the pathophysiology and treatment of narcolepsy...
  78. ncbi A genetic model for human polyglutamine-repeat disease in Drosophila melanogaster
    N M Bonini
    Department of Biology, University of Pennsylvania, Philadelphia 19104 6018, USA
    Philos Trans R Soc Lond B Biol Sci 354:1057-60. 1999
    ..By applying the power of Drosophila genetics to the problem of human polyglutamine-induced neural degeneration, we hope to identify ways to prevent and treat these diseases in humans...
  79. ncbi Suppression of polyglutamine-mediated neurodegeneration in Drosophila by the molecular chaperone HSP70
    J M Warrick
    Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
    Nat Genet 23:425-8. 1999
    ..Our studies indicate that HSP70 or related molecular chaperones may provide a means of treating these and other neurodegenerative diseases associated with abnormal protein conformation and toxicity...
  80. ncbi Molecular analyses of Machado-Joseph disease
    T Kobayashi
    Graduate School of Biostudies, Kyoto University, Kyoto, and CREST, Japan Science and Technology Corporation, Japan
    Cytogenet Genome Res 100:261-75. 2003
  81. ncbi Gene expression profiling in ataxin-3 expressing cell lines reveals distinct effects of normal and mutant ataxin-3
    Bernd O Evert
    Department of Neurology, University of Bonn, Sigmund Freud Str 25, 53105 Bonn, Germany
    J Neuropathol Exp Neurol 62:1006-18. 2003
    ....
  82. ncbi Ectoine alters subcellular localization of inclusions and reduces apoptotic cell death induced by the truncated Machado-Joseph disease gene product with an expanded polyglutamine stretch
    Kentaro Furusho
    Department of Neurology, Institute of Clinical Medicine, Graduate School of Comprehensive Medical Sciences, University of Tsukuba, Tsukuba 305-8575, Japan
    Neurobiol Dis 20:170-8. 2005
    ..Our findings suggest that ectoine, a natural osmoprotectant in bacteria, may function as a novel molecule protecting cells from polyglutamine-induced toxicity...
  83. ncbi [Mechanisms to control degradation of polyglutamine-containing protein]
    Kei-Ichi Nakayama
    Department of Molecular and Cellular Biology, Kyushu University, Fukuoka
    Rinsho Shinkeigaku 43:906-8. 2003
    ..These findings suggest that E4 is a rate-limiting factor of degradation of pathologic polyglutamine-containing proteins, and may give a potential tool for gene therapy to control the clinical conditions of MJD...
  84. ncbi Expression of expanded polyglutamine protein induces behavioral changes in Drosophila (polyglutamine-induced changes in Drosophila)
    Yun-Taik Kim
    Department of Life Science, Sogang University, 1 Shinsu-dong, Mapo-Gu, Seoul 121-742, Korea
    Cell Mol Neurobiol 24:109-22. 2004
    ..The study shows that such Drosophila transgenic models express olfactory dysfunction and ataxic behavior as observed in human patients...
  85. ncbi Haplotype study in Dutch SCA3 and SCA6 families: evidence for common founder mutations
    Dineke S Verbeek
    Department of Medical Genetics, University Medical Center, Stratenum, Universiteitsweg 100, 3584 CG Utrecht, The Netherlands
    Eur J Hum Genet 12:441-6. 2004
    ..These results strongly suggest that ADCA families can be traced back to common ancestors in particular parts of the Netherlands...
  86. ncbi Defining a metabolic phenotype in the brain of a transgenic mouse model of spinocerebellar ataxia 3
    J L Griffin
    Department of Biochemistry, University of Cambridge, United Kingdom
    Physiol Genomics 16:334-40. 2004
    ..This study suggests high-resolution (1)H-NMR spectroscopy coupled with pattern recognition may provide a rapid method for assessing the phenotype of animal models of human disease...
  87. ncbi Destabilization of a non-pathological variant of ataxin-3 results in fibrillogenesis via a partially folded intermediate: a model for misfolding in polyglutamine disease
    Michelle K M Chow
    Department of Biochemistry and Molecular Biology, Structural Biology Group, Monash University, Clayton Campus, PO Box 13D, Wellington Rd, 3800, Clayton, Vic, Australia
    J Mol Biol 335:333-41. 2004
    ..The implications of this are considered in the wider context of the development and pathogenesis of polyglutamine diseases...
  88. ncbi Pharmacological treatments of cerebellar ataxia
    Masafumi Ogawa
    Department of Neurology, National Center Hospital for Mental, Nervous, and Muscular Disorders, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
    Cerebellum 3:107-11. 2004
    ..The thyrotropin-releasing hormone, D-cycloserine, and acetazolamide for SCA6 may have some efficacy. However, a well-designed double-blind crossover trial is needed to confirm the effect...
  89. ncbi Frequency of SCA1, SCA2, SCA3/MJD, SCA6, SCA7, and DRPLA CAG trinucleotide repeat expansion in patients with hereditary spinocerebellar ataxia from Chinese kindreds
    B Tang
    Department of Neurology, Xiangya Hospital, Hunan Medical University, People s Republic of China
    Arch Neurol 57:540-4. 2000
    ....
  90. ncbi Familial pediatric rapidly progressive extrapyramidal syndrome: is it Hallervorden-Spatz disease?
    Ambar Chakravarty
    Department of Neurology, Vivekananda Institute of Medical Sciences, Calcutta, India
    Pediatr Neurol 29:170-2. 2003
    ..The diagnosis should be considered a variant form of HSD...
  91. ncbi Autosomal dominant cerebellar ataxia: frequency analysis and clinical characterization of 45 families from Portugal
    J Vale
    Neurology Department, Hospital de Egas Moniz CHLO, Lisbon, Portugal
    Eur J Neurol 17:124-8. 2010
    ..The relative frequency of the different autosomal dominant cerebellar ataxia (ADCA) varies widely amongst different geographic locations. Here we describe a series of 45 ADCA families from Portugal...
  92. ncbi Multiplex families with multiple system atrophy
    Kenju Hara
    Departments of Neurology, Center for Bioresource based Researches, Brain Research Institute, Niigata University, Niigata, Japan
    Arch Neurol 64:545-51. 2007
    ..Multiple system atrophy (MSA) has been considered a sporadic disease, without patterns of inheritance...
  93. ncbi Brain glyceraldehyde-3-phosphate dehydrogenase activity in human trinucleotide repeat disorders
    S J Kish
    Human Neurochemical Pathology Laboratory, Center for Addiction and Mental Health, Toronto, Ontario, Canada
    Arch Neurol 55:1299-304. 1998
    ....
  94. ncbi Trinucleotide repeats in 202 families with ataxia: a small expanded (CAG)n allele at the SCA17 locus
    I Silveira
    UnIGENe, IBMC, Rua do Campo Alegre 823, 4150 180, Porto, Portugal
    Arch Neurol 59:623-9. 2002
    ..However, in some instances the molecular diagnosis is considered indeterminate because of the overlap between normal and affected allele ranges. In addition, the mechanism that generates expanded alleles is not completely understood...
  95. ncbi Preimplantation genetic diagnosis of spinocerebellar ataxia 3 by (CAG)(n) repeat detection
    M Drusedau
    Research Institute Growth and Development GROW, Academic Hospital Maastricht, Maastricht, The Netherlands
    Mol Hum Reprod 10:71-5. 2004
    ..One embryo was diagnosed as affected whereas six embryos were diagnosed as unaffected. Two unaffected embryos were transferred and resulted in a singleton pregnancy and the birth of a healthy girl...
  96. ncbi A prospective study of SCA3 gait ataxia described through a Markovian method
    Suzi Camey
    Department of Statistics, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
    Neuroepidemiology 34:163-70. 2010
    ..Studies on the natural history of rare, chronic diseases like spinocerebellar ataxia 3 (SCA3) are hard to be done, since patients enter the study with variable disease durations and are followed up at irregular intervals...
  97. ncbi Treatment of cerebellar ataxia with 5-HT1A agonist
    Asako Takei
    Hokuyukai Neurology Hospital, Niju yon ken, Nishi ku, Sapporo, Japan
    Cerebellum 4:211-5. 2005
    ..Responsive patients exhibited only mild ataxia. The doses of 5-HT1A agonists that have been used successfully ranged from 12.5 mg/day to 60 mg/day (or 1 mg/kg), and were well tolerated by most patients...
  98. ncbi Enhanced ATPase activities as a primary defect of mutant valosin-containing proteins that cause inclusion body myopathy associated with Paget disease of bone and frontotemporal dementia
    Atsushi Manno
    Laboratory of Functional Biology, Kyoto University Graduate School of Biostudies, Kyoto 606 8501, Japan
    Genes Cells 15:911-22. 2010
    ..Elevated ATPase activities, thus, may be a hidden primary defect causing IBMPFD pathological phenotypes, which would be revealed when abnormal proteins are accumulated, as typically observed in aging...
  99. ncbi CAG repeat disorder models and human neuropathology: similarities and differences
    Mitsunori Yamada
    Department of Pathology, Brain Research Institute, Niigata University, 1 Asahimachi, Niigata, 951 8585, Japan
    Acta Neuropathol 115:71-86. 2008
    ....
  100. ncbi Pathology of CAG repeat diseases
    M Yamada
    Department of Pathology, Brain Research Institute, Niigata University, Japan
    Neuropathology 20:319-25. 2000
    ....
  101. ncbi Progression rate of neurological deficits in a 10-year cohort of SCA3 patients
    Laura Bannach Jardim
    Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
    Cerebellum 9:419-28. 2010
    ..03 points per each additional year of age at onset (p = 0.005). NESSCA worsened steadily, producing linear trajectories, which were faster among patients with longer expanded repeats (>74) and with lower ages at onset (<34 years)...

Research Grants89

  1. Nuclear bodies and ribonucleoprotein biogenesis
    MICHAEL HEBERT; Fiscal Year: 2009
    ..Certain diseases, such as cancer and some neurodegenerative disorders, may alter Cajal body and Gem activity. ..
  2. Nuclear bodies and ribonucleoprotein biogenesis
    Michael D Hebert; Fiscal Year: 2010
    ..Certain diseases, such as cancer and some neurodegenerative disorders, may alter Cajal body and Gem activity. ..
  3. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2003
    ..Further, changes observed in SCA-1 patients and in transgenic mice will be compared with that in Machado-Joseph disease/SCA-3, other cerebellar ataxias and normal controls. ..
  4. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2007
    ..Further, changes observed in SCA-1 patients and in transgenic mice will be compared with that in Machado-Joseph disease/SCA-3, other cerebellar ataxias and normal controls. ..
  5. Mechanisms of Ataxin-1 Mediated Purkinje Cell Death
    PARMINDER VIG; Fiscal Year: 2006
    ..Further, changes observed in SCA-1 patients and in transgenic mice will be compared with that in Machado-Joseph disease/SCA-3, other cerebellar ataxias and normal controls. ..
  6. Structures and functions of the human Josephin domain-containing proteins
    PATRICK LOLL; Fiscal Year: 2009
    ....
  7. Structures and functions of the human Josephin domain-containing proteins
    Patrick J Loll; Fiscal Year: 2010
    ....
  8. Triplet Repeat Disease:Requirement for Caspase Cleavage
    Lisa Ellerby; Fiscal Year: 2007
    ..abstract_text> ..
  9. TRIPLET REPEAT DISEASE: REQUIREMENT FOR CASPASE CLEAVAGE
    Lisa Ellerby; Fiscal Year: 2001
    ..We will test our hypothesis that the seven polyglutamine containing proteins are pro-apoptotic, and that the pro-apoptotic phenotype is dependent upon cleavage of these proteins by cell death executioners, the caspases. ..
  10. Crystallization of Ataxin-3
    PATRICK LOLL; Fiscal Year: 2005
    ..The molecular understanding of ataxin-3 that will be obtained from this work is a prerequisite for any rational design of therapeutics that will interfere with the protein's aberrant folding and aggregation. ..
  11. MECHANISMS OF GLUTAMINE REPEAT NEURODEGENERATION
    Henry Paulson; Fiscal Year: 2004
    ..abstract_text> ..
  12. Mechanisms of Polyglutamine Neurodegeneration
    Henry Paulson; Fiscal Year: 2009
    ..They may also shed light on the role of protein quality control, and particularly of de-ubiquitinating enzymes, in age-related neurodegenerative diseases characterized by protein misfolding and aggregation. ..
  13. Mouse Model and Interactors for Machado-Joseph Disease
    Veronica Colomer; Fiscal Year: 2004
    DESCRIPTION (Adapted from applicant's abstract): Machado Joseph disease (MJD), or spinocerebellar ataxia-3 (SCA-3), is the most common dominant spinocerebellar ataxia...
  14. Screen:Blockers of a CaV2.2-Mint-PDZ1 association (RMI)
    Ilya Bezprozvanny; Fiscal Year: 2004
    ..Biological activity of compounds identified in the full HTS screen will be tested in whole animal pain assays (formalin, hot plate, tail flick). ..
  15. Structure-function of inositol trisphosphate receptor
    Ilya Bezprozvanny; Fiscal Year: 2009
    ..Dopamine-induced responses in striatal medium spiny neurons will be studied by Ca2+ imaging. Experiments with striatal neurons from DARPP-32 and D2 receptor knockout mice will be performed. ..
  16. INTERACTIONS OF CALCIUM CHANNELS WITH ADAPTOR PROTEINS
    Ilya Bezprozvanny; Fiscal Year: 2003
    ....
  17. Mechanisms of Polyglutamine Neurodegeneration
    Henry Paulson; Fiscal Year: 2007
    ..They may also shed light on the role of protein quality control, and particularly of de-ubiquitinating enzymes, in age-related neurodegenerative diseases characterized by protein misfolding and aggregation. ..
  18. Analysis of Fbx2 Family of Ubiquitin Ligases
    Henry Paulson; Fiscal Year: 2007
    ..The results may also have implications for the pathogenesis of two poorly understood neurological diseases, DYT1 dystonia and familial neuroserpin dementia. ..
  19. Metabolomics and metabolic compartmentation in the brain
    Julian Griffin; Fiscal Year: 2006
    ..To correlate NMR observable metabolite changes with transcriptional changes. Our data will provide proof-of principle for this methodology, and establish a means for exploring other neurolodegenerative disorders. ..
  20. Integrating Quality Control: Studies of CHIP in Age-related Neurodegeneration
    Henry Paulson; Fiscal Year: 2009
    ..Understanding this machinery may suggest routes to therapy for a large range of sporadic and hereditary neurodegenerative diseases that occur as we age. ..
  21. A Comprehensive Approach to Identification of Autism Susceptibility Genes
    Daniel H Geschwind; Fiscal Year: 2010
    ..All phenotypic and genotype data will be made accessible via the Internet on a rolling basis, including minority families, further enhancing the value of this resource to the community. ..
  22. Mechanisms of Polyglutamine Neurodegeneration
    Henry L Paulson; Fiscal Year: 2010
    ..This grant will explore the basis of SCA3 in order that we can ultimately develop therapies for this fatal disease based on a better understanding of disease mechanisms. ..
  23. Integrating Quality Control: Studies of CHIP in Age-related Neurodegeneration
    Henry L Paulson; Fiscal Year: 2010
    ..Understanding this machinery may suggest routes to therapy for a large range of sporadic and hereditary neurodegenerative diseases that occur as we age. ..
  24. Iron in the pathogenesis of Friedreich's ataxia
    ARNULF HANS WERNER KOEPPEN; Fiscal Year: 2010
    ..Chelation therapy in an effort to remove iron from affected tissues remains controversial. The proposed investigation will help clarify the potential benefit of chelation therapy in FRDA. ..
  25. THE GENETICS OF IDIOPATHIC BASAL GANGLIA CALCIFICATION
    Daniel Geschwind; Fiscal Year: 2004
    ..Physical mapping and candidate screening for mutations will be pursued as the region is narrowed to identify the IBGC gene. A genome scan will be performed in families who are not linked to the chr.14 locus. ..
  26. Regulation of the SCA3 Disease Gene and Its Protein
    SARAH BERKE; Fiscal Year: 2003
    ..The studies proposed here will further our understanding of ataxin-3 production and degradation, perhaps leading to the development of therapies for these currently untreatable diseases. ..
  27. Genomewide Search--Autism Susceptibility Loci-supplement
    Daniel Geschwind; Fiscal Year: 2003
    ..This work is a direct response to Title 1 of the Pediatric Health Act of 2000 which authorizes and mandates an increased NIH commitment to autism gene banking. ..
  28. Identification of targets of FoxP2 in the brain
    Daniel Geschwind; Fiscal Year: 2006
    ..This proposal has a strong screening component in an area where no molecular mechanisms have been identified and fits well within the R21 framework. ..
  29. ASYMMETRICALLY EXPRESSED GENES IN DEVELOPING CEREBRUM
    Daniel Geschwind; Fiscal Year: 2003
    ..abstract_text> ..
  30. Identification and Characterization of Asymmetrically-Expressed Genes
    Daniel Geschwind; Fiscal Year: 2007
    ..All of this will clearly inform the study of human neurodevelopmental disorders that are related to speech and language, as well as probe the utility and limitations of animal models for these disorders. ..
  31. Novel Genetic Risk Factors for Alzheimer's Disease (AD) & Frontotemporal Dementia
    Daniel Geschwind; Fiscal Year: 2009
    ..abstract_text> ..
  32. Novel Genetic Risk Factors for Alzheimer's Disease (AD) & Frontotemporal Dementia
    Daniel Geschwind; Fiscal Year: 2007
    ..abstract_text> ..
  33. Tissue Transglutaminase in Neurologic Injury
    THUNG SHEN LAI; Fiscal Year: 2007
    ..The inhibitors will be used to investigate the role of TTG in the pathogenesis of expanded polyQ diseases. Current proposal will lead to new therapy for HD and other neurologic disorders. ..
  34. A Genomewide Search for Autism Susceptibilty Loci
    Daniel Geschwind; Fiscal Year: 2006
    ..All phenotypic and genotype data will be made accessible via the Internet on a rolling basis, further enhancing the value of this resource to the community. ..
  35. Training Grant in Neurobehavioral Genetics
    Daniel Geschwind; Fiscal Year: 2007
    ....