Leukocyte Telomere Length Is Associated with Disability in Older US Population

被引:43
作者
Risques, Rosa Ana [1 ]
Arbeev, Konstantin G. [2 ]
Yashin, Anatoli I. [2 ]
Ukraintseva, Svetlana V. [2 ]
Martin, George M. [1 ]
Rabinovitch, Peter S. [1 ]
Oshima, Junko [1 ]
机构
[1] Univ Washington, Dept Pathol, Seattle, WA 98195 USA
[2] Duke Univ, Ctr Populat Hlth & Aging, Durham, NC USA
基金
美国国家卫生研究院;
关键词
disability; telomere; aging; disease; human; ALZHEIMERS-DISEASE; INSULIN-RESISTANCE; CIGARETTE-SMOKING; OXIDATIVE STRESS; APOLIPOPROTEIN-E; NO ASSOCIATION; CANCER-RISK; MORTALITY; BLOOD; HEART;
D O I
10.1111/j.1532-5415.2010.02948.x
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
030301 [社会学]; 100201 [内科学];
摘要
OBJECTIVES: To determine whether mean leukocyte telomere length (LTL) serves as a biomarker of disability assessed according to activities of daily living (ADLs) and what factors may modify this relationship. DESIGN: Retrospective cross-sectional study. SETTING: A subset of the National Long Term Care Survey (NTLCS), a Medicare-based U. S. population longitudinal study focused on trends of overall health and functional status in older adults. PARTICIPANTS: Six hundred and twenty-four individuals from the 1999 wave of the NTLCS cohort. MEASUREMENTS: Relative LTL determined according to quantitative polymerase chain reaction. LTL has previously been shown to correlate with common age-related disorders and mortality, as well as with socioeconomic status. RESULTS: A sex difference in LTL was observed but not age-dependent shortening or association with socioeconomic status. LTL was associated with disability and functional status assessed according to ADLs. The association between ADLs and LTL was stronger in subjects without diabetes mellitus, whereas associations were not seen when only subjects with diabetes mellitus were analyzed. Associations between LTL and cardiovascular disease (CVD) and cancer were also present in the group without diabetes mellitus but not in the group with diabetes mellitus. CONCLUSION: These findings support the concept that LTL is a biomarker of overall well-being that is predictive of disability of older individuals in the U. S. population. Diabetes mellitus plays an important role as a modifier of the association between LTL and disability, CVD, and cancer. These associations have clinical implications because of the potential predictive value of LTL and deserve further investigation. J Am Geriatr Soc 58: 1289-1298, 2010.
引用
收藏
页码:1289 / 1298
页数:10
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