Erschienen in:
01.10.2013 | Short Report/Rapid Communication
Peripherally Applied Synthetic Peptide isoAsp7-Aβ(1-42) Triggers Cerebral β-Amyloidosis
verfasst von:
S. A. Kozin, I. B. Cheglakov, A. A. Ovsepyan, G. B. Telegin, P. O. Tsvetkov, A. V. Lisitsa, A. A. Makarov
Erschienen in:
Neurotoxicity Research
|
Ausgabe 3/2013
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Abstract
Intracerebral and intraperitoneal inoculation with β-amyloid-rich brain extracts originating from patients with Alzheimer’s disease as well as intracerebral injection of aggregates composed of synthetic Aβ can induce cerebral β-amyloidosis, and associated cognitive dysfunctions in susceptible animal hosts. We have found that repetitive intravenous administration of 100 μg of synthetic peptide corresponding to isoAsp7-containing Aβ(1-42), an abundant age-dependent Aβ isoform present both in the pathological brain and in synthetic Aβ preparations, robustly accelerates formation of classic dense-core congophilic amyloid plaques in the brain of β-amyloid precursor protein transgenic mice. Our findings indicate this peptide as an inductive agent of cerebral β-amyloidosis in vivo.