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Analysis of SCA2 and SCA3/MJD repeats in Parkinson's disease in mainland China: Genetic, clinical, and positron emission tomography findings
Author(s) -
Wang JunLing,
Xiao Bin,
Cui XiangXiang,
Guo JiFeng,
Lei LiFang,
Song XingWang,
Shen Lu,
Jiang Hong,
Yan XinXiang,
Pan Qian,
Long ZhiGao,
Xia Kun,
Tang BeiSha
Publication year - 2009
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.22727
Subject(s) - spinocerebellar ataxia , machado–joseph disease , genetics , locus (genetics) , medicine , population , psychology , disease , biology , gene , environmental health
To investigate the prevalence and clinical feature(s) of Parkinson's disease (PD) patients with expanded ( ATXN2 and MJD1 ) genes of spinocerebellar ataxia type 2 and 3 (SCA2 and SCA3/MJD) in a mainland Chinese population, CAG triplet repeat expansions of (SCA2 and SCA3/MJD) genes ( ATXN2 and MJD1 ) were analyzed in a cohort of 452 PD patients, including 386 sporadic and 66 familial forms. Striatal dopamine transporter was evaluated in two SCA2 and two SCA3/MJD‐positive family members, an idiopathic PD patient and a healthy control using carbon (C11) [ 11 C]‐radiolabeled‐CFT positron emission tomography (PET). We found two patients in one familial PD (FPD) family (1.5%) and two sporadic PD patients (0.5%) with expanded CAG repeats in the ATXN2 locus, four patients in two FPD families (3%) and another three sporadic PD patients (0.8%) in the MJD1 locus. [ 11 C]‐CFT PET in detected members in SCA2 and SCA3/MJD families showed decrements of 11 C‐CFT uptake. These findings suggest that a mutation in SCA2 or SCA3/MJD may be one of the genetic causes of PD. © 2009 Movement Disorder Society