Shorter telomere length is linked to brain atrophy and white matter hyperintensities

被引:32
作者
Wikgren, Mikael [1 ]
Karlsson, Thomas [2 ]
Soderlund, Hedvig [3 ]
Nordin, Annelie [1 ]
Roos, Goran [4 ]
Nilsson, Lars-Goran [5 ]
Adolfsson, Rolf [1 ]
Norrback, Karl-Fredrik [1 ]
机构
[1] Umea Univ, Dept Clin Sci, Div Psychiat, S-90187 Umea, Sweden
[2] Linkoping Univ, Disabil Res Div, Dept Behav Sci & Learning, Linkoping, Sweden
[3] Uppsala Univ, Dept Psychol, Uppsala, Sweden
[4] Umea Univ, Div Pathol, Dept Med Biosci, S-90187 Umea, Sweden
[5] Stockholm Univ, Dept Psychol, S-10691 Stockholm, Sweden
基金
瑞典研究理事会;
关键词
brain atrophy; older people; telomere length; white matter hyperintensities; OXIDATIVE STRESS; CEREBRAL ATROPHY; BLOOD-PRESSURE; OLDEST-OLD; MORTALITY; DEMENTIA; DISEASE; COGNITION; LESIONS; MEMORY;
D O I
10.1093/ageing/aft172
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Background: leukocyte telomere length (TL) is considered a marker of biological aging. Several studies have investigated the link between leukocyte TL and aging-associated functional attributes of the brain, but no prior study has investigated whether TL can be linked to brain atrophy and white matter hyperintensities (WMHs); two prominent structural manifestations of brain aging. Methods: we investigated whether leukocyte TL was related to brain atrophy and WMHs in a sample of 102 non-demented individuals aged 64-75 years. Results: shorter TL was related to greater degree of subcortical atrophy (beta = -0.217, P = 0.034), but not to cortical atrophy. Furthermore, TL was 371 bp shorter (P = 0.041) in participants exhibiting subcortical WMHs, and 552 bp shorter (P = 0.009) in older participants exhibiting periventricular WMHs. Conclusion: this study provides the first evidence of leukocyte TL being associated with cerebral subcortical atrophy and WMHs, lending further support to the concept of TL as a marker of biological aging, and in particular that of the aging brain.
引用
收藏
页码:212 / 217
页数:7
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