期刊
EUROPEAN JOURNAL OF NEUROLOGY
卷 21, 期 1, 页码 93-99出版社
WILEY
DOI: 10.1111/ene.12252
关键词
epidemiology; nested case-control study; Parkinson's disease; telomere length
资金
- Parkinson's Disease Foundation [PDF-IRG-1002]
- National Cancer Institute [CA-34944, CA-40360, CA-097193]
- National Heart, Lung, and Blood Institute [HL-26490, HL-34595]
- NATIONAL CANCER INSTITUTE [R01CA040360, R01CA097193] Funding Source: NIH RePORTER
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [R01HL034595] Funding Source: NIH RePORTER
Background and purposeTelomere shortening has been implicated in neurodegenerative disorders. However, available data on the association between telomere length and Parkinson's disease (PD) are inconclusive. MethodsA nested case-control design was used amongst men participating in the prospective Physicians' Health Study. A large proportion of participants provided blood samples in 1997 and they were followed through 2010. Men with self-reported PD were age-matched to controls in a 1:2 ratio. Quantitative PCR was used to determine the telomere repeat copy number to single gene copy number ratio (TSR) in genomic DNA extracted from peripheral blood leukocytes. TSR was used as a measure for relative telomere length (RTL) in our analyses. Conditional logistic regression was used to determine the risk of PD associated with RTL. ResultsData on RTL were available from 408 cases and 809 controls. Median TSR was shorter in controls than in cases (47.7 vs. 50.2; P=0.02). The age-adjusted odds ratio (OR) for PD was 0.66 [95% confidence interval (CI) 0.46-0.95; P-trend over quartiles0.02] comparing the lowest to the highest quartile. The pattern of association was unchanged when comparing RTL below versus above the median (age-adjusted OR0.75; 95% CI 0.59-0.96). Associations were similar after additional adjustment for many covariates. ConclusionContrary to what was expected, in this large nested case-control study amongst men shorter telomeres were associated with reduced PD risk. Future research on the nature of this counterintuitive association is warranted.
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