Abstract:
:Low homocysteine levels and B vitamin treatment are reported to protect against declining cognitive health. Both B vitamins and homocysteine are involved in the production of S-adenosylmethionine, a universal methyl donor essential for the process of DNA methylation. We investigated the effect of a damaging coding variant within the DNA methyltransferase gene DNMT3L (R278G, A/G) by examining B vitamin intake, homocysteine levels, cognitive performance, and brain atrophy in individuals in the VITACOG study of mild cognitive impairment and the TwinsUK cohort. In the VITACOG study, individuals who received a 2-year treatment of B vitamins and carried the G allele showed better "visuospatial associative memory" and slower rates of brain atrophy. In the TwinsUK study, improved "visuospatial associative memory" was evident in individuals who reported regular vitamin intake and were A/A homozygotes. In silico modeling indicated that R278G disrupts protein interaction between DNMT3L and DNMT3A, affecting the DNMT3A-3L-H3 complex required for DNA methylation. These findings show that vitamin intake and genetic variation within DNMT3L interact to influence cognitive decline.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Flitton M,Rielly N,Warman R,Warden D,Smith AD,Macdonald IA,Knight HMdoi
10.1016/j.neurobiolaging.2019.02.001subject
Has Abstractpub_date
2019-06-01 00:00:00pages
64-73eissn
0197-4580issn
1558-1497pii
S0197-4580(19)30041-7journal_volume
78pub_type
杂志文章abstract::Chronic low-grade inflammation during aging (inflammaging) is associated with cognitive decline and neurodegeneration; however, the mechanisms underlying inflammaging are unclear. We studied a population (n = 361) of healthy young and old adults from the MyoAge cohort. Peripheral levels of C-X-C motif chemokine ligand...
journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
pub_type: 临床试验,杂志文章
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/j.neurobiolaging.2004.10.005
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/j.neurobiolaging.2014.07.032
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/j.neurobiolaging.2007.07.010
更新日期:2009-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0197-4580(02)00230-0
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/0197-4580(95)00075-p
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
pub_type: 评论,杂志文章,评审
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journal_title:Neurobiology of aging
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/j.neurobiolaging.2004.08.013
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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journal_title:Neurobiology of aging
pub_type: 杂志文章
doi:10.1016/0197-4580(92)90077-b
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journal_title:Neurobiology of aging
pub_type: 杂志文章
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更新日期:2020-11-10 00:00:00
abstract::Vergence eye movements were recorded with the scleral search-coil system in 32 healthy subjects (ages 19-73 years) to characterize the age-related effects on the dynamic parameters of vergence responses to step (transient components) and ramp or sinusoidal targets (sustained components) under natural viewing condition...
journal_title:Neurobiology of aging
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