Age-dependent inverse correlations in CSF and plasma amyloid-β(1-42) concentrations prior to amyloid plaque deposition in the brain of 3xTg-AD mice

Soo Min Cho, Sejin Lee, Seung Hoon Yang, Hye Yun Kim, Michael Jisoo Lee, Hyunjin Vincent Kim, Jiyoon Kim, Seungyeop Baek, Jin Yun, Dohee Kim, Yun Kyung Kim, Yakdol Cho, Jiwan Woo, Tae Song Kim, Young Soo Kim

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Abstract

Amyloid-β (Aβ) plays a critical role as a biomarker in Alzheimer's disease (AD) diagnosis. In addition to its diagnostic potential in the brain, recent studies have suggested that changes of Aβ level in the plasma can possibly indicate AD onset. In this study, we found that plasma Aβ(1-42) concentration increases with age, while the concentration of Aβ(1-42) in the cerebrospinal fluid (CSF) decreases in APPswe, PS1M146V and TauP301L transgenic (3xTg-AD) mice, if measurements were made before formation of ThS-positive plaques in the brain. Our data suggests that there is an inverse correlations between the plasma and CSF Aβ(1-42) levels until plaques form in transgenic mice's brains and that the plasma Aβ concentration possesses the diagnostic potential as a biomarker for diagnosis of early AD stages.

Original languageEnglish
Article number20185
JournalScientific reports
Volume6
DOIs
Publication statusPublished - 2016 Feb 2

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Cho, S. M., Lee, S., Yang, S. H., Kim, H. Y., Lee, M. J., Kim, H. V., Kim, J., Baek, S., Yun, J., Kim, D., Kim, Y. K., Cho, Y., Woo, J., Kim, T. S., & Kim, Y. S. (2016). Age-dependent inverse correlations in CSF and plasma amyloid-β(1-42) concentrations prior to amyloid plaque deposition in the brain of 3xTg-AD mice. Scientific reports, 6, [20185]. https://doi.org/10.1038/srep20185