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- W2890201119 abstract "The blood-brain barrier (BBB) is suggested to be compromised in Alzheimer's disease (AD). The concomitant presence of vascular amyloid beta (Aβ) pathology, so called cerebral amyloid angiopathy (CAA), also predisposes impairment of vessel integrity. Additionally, immunotherapy against Aβ may lead to further damage of the BBB. To what extent this affects the BBB passage of molecules is debated. The current study aimed to investigate BBB integrity to large molecules in transgenic mice displaying abundant Aβ pathology and age matched wild type animals, with or without acute anti-Aβ antibody treatment. Animals were administered a single i.v. injection of PBS or 3D6 (10 mg/kg), i.e. the murine version of the clinically investigated Aβ antibody bapineuzumab, supplemented with [125I]3D6. Three days post injections, a 4 kDa FITC and a 150 kDa Antonia Red dextran were administered i.v. to all animals. After termination, fluorescent detection in brain and serum was used for the calculation of dextran brain-to-blood concentration ratios. Further characterization of antibody fate and the presence of CAA were investigated using radioactivity measurements and Congo red staining. BBB passage of large molecules was equally low in wild type and transgenic mice, suggesting an intact BBB despite Aβ pathology. Neither was the BBB integrity affected by acute 3D6 treatment. However, CAA was confirmed in the transgenes and local antibody accumulations were observed in the brain, indicating CAA-antibody interactions. The current study shows that independently of Aβ pathology or acute 3D6 treatment, the BBB is intact, without extensive permeability to large molecules, including the 3D6 antibody." @default.
- W2890201119 created "2018-09-27" @default.
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- W2890201119 date "2018-12-01" @default.
- W2890201119 modified "2023-10-06" @default.
- W2890201119 title "Blood-brain barrier integrity in a mouse model of Alzheimer's disease with or without acute 3D6 immunotherapy" @default.
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- W2890201119 doi "https://doi.org/10.1016/j.neuropharm.2018.09.001" @default.
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