期刊
JOURNAL OF GERIATRIC PSYCHIATRY AND NEUROLOGY
卷 20, 期 2, 页码 89-92出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0891988706297737
关键词
parkinsonism; Parkinson's disease; fragile X; FMR1; dementia; cognitive decline
Carriers of expanded alleles of the fragile X mental retardation (FMR1) gene may display parkinsonism, cognitive decline, and behavioral changes. The authors screened 2 male groups of patients affected with Parkinson's disease (PD) (n = 137). One group (n = 56) was followed longitudinally for up to 12 years. Length of CGG repeats in PD patients was compared with healthy controls (n = 310). In addition, the association of the number of CGG repeats with cognitive decline or hallucinations was studied in the longitudinally followed PD group. The authors found no repeats in the premutation range (55-200 CGG repeats) and no significant difference in the proportion of intermediate-size (41-54 CGG repeats) carriers between the PD and the control groups. Using linear regression, the number of CGG repeats was not related to motor or cognitive progression. However, the marked cognitive decline in 2 patients carrying intermediate-size alleles points to a possible association. More studies with larger PD samples are warranted.
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