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Age Related Changes in 5‐methylcytosine Content in Human Peripheral Leukocytes and Placentas: an HPLC‐based Study

Fuke, C., Shimabukuro, M., Petronis, A., Sugimoto, J., Oda, T., Miura, K., Miyazaki, T., Ogura, C., Okazaki, Y., Jinno, Y.·2004·Annals of Human Genetics

Abstract

Summary: The goal of the present study was to investigate inter‐individual and age‐dependent variation of global DNA methylation in human tissues. In this work, we examined 5‐methyldeoxycytidine (met C) content by HPLC in human peripheral blood leukocytes obtained from 76 healthy individuals of ages varying from 4 to 94 years (yr), and 39 human placentas from various gestational stages. The HPLC analysis revealed a significant variation of met C across individuals and is consistent with the previous findings of age‐dependent decrease of global methylation levels in human tissues. The age‐dependent decrease of met C was relatively small, but statistically highly significant (p= 0.0002) in the aged group (65.9 ± 8.9 [mean age ± SD] yr; n = 22) in comparison to the young adult group (19.3 ± 1.4 yr; n = 21). Males showed a subtle but statistically significant higher mean met C content than females. In contrast to the peripheral blood samples, DNA extracted from placentas exhibited gestational stage‐dependent increase of methylation levels that appeared to inversely correlate with the expression levels of human endogenous retroviruses. These data may be helpful in further studies of DNA methylation, such as inheritance of epigenetic patterns, environment‐induced changes, and involvement of epigenetic changes in disease.

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Crossref · 10.1046/j.1529-8817.2004.00081.x

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Metadata

Authors
Fuke, C., Shimabukuro, M., Petronis, A., Sugimoto, J., Oda, T., Miura, K., Miyazaki, T., Ogura, C., Okazaki, Y., & Jinno, Y.
Venue
Annals of Human Genetics
Publisher
Wiley
Published
2004-05
Volume
68
Issue
3
Pages
196-204
ISSN
  • 0003-4800 (ISSN-L)
  • 1469-1809
OpenAlex
W2028418054
Cited by
401
References
5
FWCI
2.84
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Age Related Changes in 5‐methylcytosine Content in Human Peripheral Leukocytes and Placentas: an HPLC‐based Study. https://app.cochat.ai/papers/10.1046/j.1529-8817.2004.00081.x
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Fuke, C., Shimabukuro, M., Petronis, A., Sugimoto, J., Oda, T., Miura, K., Miyazaki, T., Ogura, C., Okazaki, Y., & Jinno, Y. (2004). Age Related Changes in 5‐methylcytosine Content in Human Peripheral Leukocytes and Placentas: an HPLC‐based Study. Annals of Human Genetics. https://doi.org/10.1046/j.1529-8817.2004.00081.x

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