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- W1798792414 abstract "Fluorine-19 magnetic resonance imaging (19F MRI) could be a promising approach for imaging amyloid deposition in the brain. However, the required features of a 19F MRI probe for amyloid detection remain unclear. In the present study, we investigated a series of compounds as potent 19F probes that could prevent the reduction in MR signal when bound to amyloid plaques in the brain. Each compound consists of styrylbenzoxazole as a core structure linked by a different length of polyethylene glycol (PEG) chain to one of three types of fluorine-labeled group: a trifluoroethoxy group, a hexafluoroisopropoxy group, or a 3',5'-bis(trifluoromethyl)benzylamino group. Among these compounds, 6-(3',6',9',15',18',21'-heptaoxa-23',23',23'-trifluoro tricosanyloxy)-2-(4'-dimethylaminostyryl)benzoxazole [compound 3b (m = 6)], which has a trifluoroethoxy group with seven ethylene glycol groups in the PEG chain, showed significant 19F MR signals in the brains of AβPPswe/PS1dE9 double-transgenic mice, but not wild-type mice. This suggested that compound 3b (m = 6) could be a useful 19F MRI probe for amyloid detection. Furthermore, this study identified the most effective length of PEG chain between the fluorine-labeled group and the core structure to ensure a strong MR signal when the probe is bound to amyloid plaques." @default.
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- W1798792414 date "2014-02-07" @default.
- W1798792414 modified "2023-10-11" @default.
- W1798792414 title "Preferred Features of a Fluorine-19 MRI Probe for Amyloid Detection in the Brain" @default.
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- W1798792414 doi "https://doi.org/10.3233/jad-131025" @default.
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