Fig. 1. Establishing SUS in an AD mouse model.

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Scanning ultrasound removes amyloid-β and restores memory in an Alzheimer’s disease mouse model by Gerhard Leinenga, and Jürgen Götz Sci Transl Med Volume.

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Fig. 1. Establishing SUS in an AD mouse model.

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Presentation transcript:

Fig. 1. Establishing SUS in an AD mouse model. Establishing SUS in an AD mouse model. (A) Setup of SUS equipment. (B and C) BBB opening by ultrasound was monitored by injecting wild-type mice with Evans blue dye that binds to albumin, a protein that is normally excluded from the brain. (B) A single entry point revealed a focal opening of the BBB in response to ultrasound treatment, with Evans blue dye able to enter the brain at this point. (C) Widespread opening of the BBB 1 hour after SUS was demonstrated with an Odyssey fluorescence LI-COR scanner of brain slices using nitrocellulose dotted with increasing concentrations of blue dye as a control. (D) Treatment scheme for the first cohort of hemizygous male Aβ plaque–forming APP23 mice (median age, 12.8 months). The mice received SUS or sham treatment for a total duration of the experiment of 6 weeks. Mice were randomly assigned to treatment groups. Using histological methods, Western blotting, enzyme-linked immunosorbent assay (ELISA), and confocal microscopy, we measured the effect of SUS treatment on amyloid pathology in mouse brain. Before the last SUS treatment, all mice were tested in the Y-maze. (E) The sequence of arm entries in the Y-maze was used to obtain a measure of alternation, reflecting spatial working memory. The percentage of alternation was calculated by the number of complete alternation sequences (that is, ABC, BCA, and CAB) divided by the number of alternation opportunities. Spontaneous alternation was restored in SUS-treated compared to sham-treated APP23 mice using non-Tg littermates as controls (n = 10 per group; one-way ANOVA followed by Dunnett’s posttest, P < 0.05). (F) Total number of arm entries did not differ between groups. Gerhard Leinenga and Jürgen Götz Sci Transl Med 2015;7:278ra33 Published by AAAS