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. 2017 Oct 20;7:13646. doi: 10.1038/s41598-017-13984-y

Figure 1.

Figure 1

(ag) Whole-body biodistribution analysis of 99mTc-TROS and kinetics of TROS in serum and CSF of healthy and EAE mice. TROS was radio-labeled with 99mTechnetium (99mTc) and (ad) 200 µg (72 MBq) 99mTc-TROS was injected intraperitoneally (i.p.) in healthy wild type (WT) and hTNFR1 transgenic (Tg) mice. SPECT/CT acquisition was performed 1 h, 8 h and 24 h post-injection (n = 3/group/time point). (a–c) Biodistribution was assessed by measurement of activities in tissues based on the SPECT images at the different time points by AMIDE. (d) Representative coronal (C) and sagittal (S) views of fused SPECT/CT images of healthy WT (left) and hTNFR1 Tg (right) mice 24 h post-injection. (f,e) hTNFR1 Tg mice were immunized with MOG35-55 and pertussis toxin to induce EAE and 16 days post-immunization (PI, peak of the disease) 500 µg (94.3 MBq) 99mTc-TROS was injected i.p. in EAE and healthy hTNFR1 Tg mice (no EAE, n = 3/group). 8 h post-injection, SPECT/CT imaging was performed and representative coronal (C) and sagittal (S) pictures were taken of fused SPECT/CT images of healthy, no EAE mice (f, left) and EAE mice (f, right). (e) Biodistribution was assessed by measurement of activities in tissues based on the SPECT images 8 h post injection by AMIDE. (g) 500 µg TROS was injected i.p. in healthy (no EAE) and EAE hTNFR1 Tg mice 16 days PI. The concentration of TROS was determined in serum and cerebrospinal fluid (CSF) at the indicated time points. TROS levels were determined (n = 4‒7 serum/time point; n = 3‒4 CSF/time point). Data information: Bars (%ID/ml) and graphs represent mean ± SEM. Bio-distribution data were analyzed in all organs between the two groups with a two-way ANOVA and TROS kinetics in serum and CSF were compared at the indicated time points with an unpaired t-test. *0.01 ≤ p < 0.05; **0.001 ≤ p < 0.01; ***0.001 ≤ p 0.0001, ****p < 0.0001. Non-statistically significant differences are not indicated on the graphs.