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- W2024356223 abstract "Alzheimer’s disease has long been associated with increased inflammation in the brain. Activated microglia and increased production of the inflammatory cytokines such as TNF-α, have been proposed to contribute to the onset and progression of the disease. We investigated if systemic administration of an anti-tumor necrosis factor (TNF) biologic medication clinically validated for rheumatoid arthritis (RA), TNF receptor 2 fused to a Fc domain (TNFR2:Fc), could ameliorate the behavioral symptoms and decrease neuroinflammation in a non-transgenic mouse model mimicking some hallmarks of the disease. Seven days after a single intracebroventricular (icv) injection of aggregated amyloid beta25–35 (9 nmoles), mice displayed significant cognitive deficit in spontaneous alternation (working memory) and inhibitory avoidance (long-term memory) tasks. Alternation percentage decreased from 72.4% ± 1.3 to chance level (52.6% ± 1.7); step-through retention latency decreased from 247 s to 144 s. Subcutaneous administration of 30 mg/kg TNFR2:Fc every second day post amyloid beta25–35 icv administration counteracted the amyloid-induced decrease in alternation percentage (66.4 s ± 1.8) and the decreased step-through retention latency (248 s ± 9). Measurement of hippocampal TNF-α levels by ELISA after behavioral assessment showed significant elevation in animals injected with amyloid beta25–35 relative to animals injected with control peptide. In animals treated with 30 mg/kg TNFR2:Fc, TNF-α levels in the hippocampus were reduced and were similar to control animals. These data suggest that peripheral administration of TNFR2:Fc counteracts amyloid-induced memory impairment and normalizes increased TNF-α levels in hippocampus of a non-transgenic mouse model of amyloid induced cognitive deficit." @default.
- W2024356223 created "2016-06-24" @default.
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- W2024356223 date "2014-06-01" @default.
- W2024356223 modified "2023-10-10" @default.
- W2024356223 title "Peripheral administration of an anti-TNF-α receptor fusion protein counteracts the amyloid induced elevation of hippocampal TNF-α levels and memory deficits in mice" @default.
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- W2024356223 doi "https://doi.org/10.1016/j.neuint.2014.04.001" @default.
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