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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
21
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pubmed:dateCreated |
1987-9-4
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pubmed:abstractText |
Significant losses of DNA 5-methyldeoxycytidine residues in old age could disrupt cellular gene expression and contribute to the physiological decline of the animal. Thus, the 5-methyldeoxycytidine content of DNAs, isolated from the tissues of two rodent species of various ages, were determined. Mus musculus lost DNA methylation sites at a rate of about 4.7 X 10(4) (approximately 0.012% of the newborn level)/month. Peromyscus leucopus lost DNA 5-methyldeoxycytidine residues at a rate of only 2.3 X 10(4) (approximately 0.006% of the newborn level)/month. Since P. leucopus generally live twice as long as M. musculus, the rate of loss of DNA 5-methyldeoxycytidine residues appears to be inversely related to life span. Similar losses in genomic 5-methyldeoxycytidine content were also observed to correlate with donor age in cultured normal human bronchial epithelial cells.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0021-9258
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
25
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pubmed:volume |
262
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
9948-51
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:3611071-Aging,
pubmed-meshheading:3611071-Animals,
pubmed-meshheading:3611071-Brain Chemistry,
pubmed-meshheading:3611071-DNA,
pubmed-meshheading:3611071-Deoxycytidine,
pubmed-meshheading:3611071-Humans,
pubmed-meshheading:3611071-Intestinal Mucosa,
pubmed-meshheading:3611071-Intestine, Small,
pubmed-meshheading:3611071-Liver,
pubmed-meshheading:3611071-Male,
pubmed-meshheading:3611071-Methylation,
pubmed-meshheading:3611071-Mice,
pubmed-meshheading:3611071-Mice, Inbred C57BL,
pubmed-meshheading:3611071-Peromyscus
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pubmed:year |
1987
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pubmed:articleTitle |
Genomic 5-methyldeoxycytidine decreases with age.
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pubmed:publicationType |
Journal Article
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