کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6038274 | 1188797 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Targeting activated microglia in Alzheimer's pathology by intraventricular delivery of a phagocytosable MRI contrast agent in APP23 transgenic mice
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Targeting activated microglia in Alzheimer's pathology by intraventricular delivery of a phagocytosable MRI contrast agent in APP23 transgenic mice Targeting activated microglia in Alzheimer's pathology by intraventricular delivery of a phagocytosable MRI contrast agent in APP23 transgenic mice](/preview/png/6038274.png)
چکیده انگلیسی
The role of phagocytosing immune cells in Alzheimer's pathology can be studied experimentally in APP23 transgenic mice. This present study intended to label phagocytosing immune cells in the plaque periphery of APP23 mice in vivo by intraventricular injection of VSOP-C184, a phagocytosable iron oxide nanoparticle MRI contrast agent. Firstly, the dosages of 0.1, 1.0 and 10 μmol Fe/kg body weight dissolved in 500 nl of artificial cerebrospinal fluid, delivered by stereotaxic surgery were evaluated 4 h after surgery in 7 wild type mice using 7 T MRI. Secondly, the dosage of 1.0 μmol Fe/kg body weight was investigated in 6 APP23 mice. The distribution of iron oxide particles was evaluated histologically. The injection of 0.1 μmol Fe/kg body weight did not result in any signal alterations, 10 μmol resulted in strong signal artifacts. The delivery of 1.0 μmol Fe/kg body weight in wild type mice resulted in MRI signal alterations throughout the ventricular system without large artifacts. It was regarded superior to other dosages for the study of the transgenic mice. There was no difference in MRI signal alterations and the distribution of iron particles in the histology between APP23 and wild type mice using the dosage of 1.0 μmol Fe/kg body weight. Upon intraventricular injection, the phagocytosable contrast agent VSOP-C184 distributes throughout the ventricular system, whereas it does not reach the periphery of amyloid plaques in APP23 mice in a concentration sufficient to cause MRI signal alterations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 46, Issue 2, June 2009, Pages 367-372
Journal: NeuroImage - Volume 46, Issue 2, June 2009, Pages 367-372
نویسندگان
Adrian P. Mundt, Christine Winter, Susanne Mueller, Jens Wuerfel, Eva Tysiak, Jörg Schnorr, Matthias Taupitz, Andreas Heinz, Georg Juckel,