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Intra-arterial infusion of [125l]Aβ 1–40 labels amyloid deposits in the aged primate brain in vivo
Abstract
Alzheimer's disease is characterized by extracellular amyloid deposits in the brain at both vascular sites (cerebrovascular amyloid, CVA) and within the neuropil (plaques). In the present study we demonstrated that brain amyloid of aged non-human primates is efficiently detected by [125I]A beta in vitro, and assessed the detection of that amyloid in vivo by intravascular infusion of [125I]A beta. Aged squirrel monkeys (Saimiri sciureus) were anesthetized and infused intra-arterially with [125I]A beta, and sacrificed 2 h later. Analysis of the anterior frontal and temporal cortices by autoradiography demonstrated that [125I]A beta was deposited on CVA and that essentially every amyloid deposit which could be detected with thioflavin S or anti-A beta antibodies was also labeled by [125I]A beta. These experiments suggest that intravascular infusion of radiolabeled A beta can be used to detect and image amyloid deposits in the human AD brain.
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“This makes re-entry of radiolabeled A b into the brain very unlikely, because the blood-to-brain transport of A b normally operates down the concentration gradient (39, 62-65).”
From Clearance of Alzheimer’s amyloid-β1-40 peptide from brain by LDL receptor–related protein-1 at the blood-brain barrier (2000) · cites this paper as [63]
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Neurovascular pathways to neurodegeneration in Alzheimer’s disease and other disorders
Zlokovic, B. V. (2011) · Nature Reviews Neuroscience · doi:10.1038/nrn3114 · Cited by 2,969
RAGE mediates amyloid-β peptide transport across the blood-brain barrier and accumulation in brain
Deane, R., Du Yan, S., Submamaryan, R. K., LaRue, B., Jovanovic, S., Hogg, E., Welch, D., Manness, L., Lin, C., Yu, J., et al. (2003) · Nature Medicine · doi:10.1038/nm890 · Cited by 1,426
Shibata, M., Yamada, S., Kumar, S. R., Calero, M., Bading, J., Frangione, B., Holtzman, D. M., Miller, C. A., Strickland, D. K., Ghiso, J., et al. (2000) · Journal of Clinical Investigation · doi:10.1172/jci10498 · Cited by 1,413
Bell, R. D., Sagare, A. P., Friedman, A. E., Bedi, G. S., Holtzman, D. M., Deane, R., & Zlokovic, B. V. (2007) · Journal of Cerebral Blood Flow & Metabolism · doi:10.1038/sj.jcbfm.9600419 · Cited by 670
Zlokovic, B. V., Deane, R., Sagare, A. P., Bell, R. D., & Winkler, E. A. (2010) · Journal of Neurochemistry · doi:10.1111/j.1471-4159.2010.07002.x · Cited by 261
Metadata
- Authors
- Ghilardi, J. R., Catton, M., Stimson, E. R., Rogers, S., Walker, L. C., Maggio, J. E., & Mantyh, P. W.
- Venue
- NeuroReport
- Published
- 1996-11
- Volume
- 7
- Issue
- 15
- Pages
- 2607-2612
- ISSN
- 0959-4965
- Cited by
- 45
- References
- 0
- Language
- en
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