Crossref journal-article
Society for Neuroscience
The Journal of Neuroscience (393)
Abstract

Cerebral amyloid angiopathy (CAA) is common in Alzheimer's disease (AD) and may contribute to dementia and cerebral hemorrhage. Parenchymal β-amyloid deposition is dependent on the activity of zinc transporter 3 (ZnT3), a neocortical synaptic vesicle membrane protein that causes enrichment of exchangeable Zn2+in the vesicle, which is externalized on neurotransmission. However, the contribution of zinc to vascular β-amyloid deposition remains unclear. Here, we identify for the first time an exchangeable pool of Zn2+in the cerebrovascular wall of normal mice. This histochemically reactive Zn2+is enriched in CAA in a transgenic mouse model of AD (Tg2576), and a dramatic reduction of CAA occurs after targeted disruption of theZnt3gene in these mice. Also, inZnt3knock-out mice, the amount of exchangeable Zn2+[detected byN-(6-methoxy-8-quinolyl)-p-carboxybenzoylsulphonamide (TFL-Zn)] in the perivascular space was significantly decreased in the neocortex but not in peripheral organs. ZnT3 was not detected in the cerebral vessel walls or in blood components of wild-type mice. Thus, synaptic ZnT3 activity may promote CAA by indirectly raising exchangeable Zn2+concentrations in the perivascular spaces of the brain.

Bibliography

Friedlich, A. L., Lee, J.-Y., van Groen, T., Cherny, R. A., Volitakis, I., Cole, T. B., Palmiter, R. D., Koh, J.-Y., & Bush, A. I. (2004). Neuronal Zinc Exchange with the Blood Vessel Wall Promotes Cerebral Amyloid Angiopathy in an Animal Model of Alzheimer’s Disease. The Journal of Neuroscience, 24(13), 3453–3459.

Authors 9
  1. Avi L. Friedlich (first)
  2. Joo-Yong Lee (additional)
  3. Thomas van Groen (additional)
  4. Robert A. Cherny (additional)
  5. Irene Volitakis (additional)
  6. Toby B. Cole (additional)
  7. Richard D. Palmiter (additional)
  8. Jae-Young Koh (additional)
  9. Ashley I. Bush (additional)
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Dates
Type When
Created 21 years, 4 months ago (March 31, 2004, 3:47 p.m.)
Deposited 2 years, 4 months ago (April 13, 2023, 12:06 p.m.)
Indexed 11 months, 2 weeks ago (Sept. 12, 2024, 5:22 p.m.)
Issued 21 years, 5 months ago (March 31, 2004)
Published 21 years, 5 months ago (March 31, 2004)
Published Online 21 years, 5 months ago (March 31, 2004)
Published Print 21 years, 5 months ago (March 31, 2004)
Funders 0

None

@article{Friedlich_2004, title={Neuronal Zinc Exchange with the Blood Vessel Wall Promotes Cerebral Amyloid Angiopathy in an Animal Model of Alzheimer’s Disease}, volume={24}, ISSN={1529-2401}, url={http://dx.doi.org/10.1523/jneurosci.0297-04.2004}, DOI={10.1523/jneurosci.0297-04.2004}, number={13}, journal={The Journal of Neuroscience}, publisher={Society for Neuroscience}, author={Friedlich, Avi L. and Lee, Joo-Yong and van Groen, Thomas and Cherny, Robert A. and Volitakis, Irene and Cole, Toby B. and Palmiter, Richard D. and Koh, Jae-Young and Bush, Ashley I.}, year={2004}, month=mar, pages={3453–3459} }