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  In vivo 3D MRI staining of mouse brain after subcutaneous application of MnCl2

Watanabe, T., Natt, O., Boretius, S., Frahm, J., & Michaelis, T. (2002). In vivo 3D MRI staining of mouse brain after subcutaneous application of MnCl2. Magnetic Resonance in Medicine, 48(5), 852-859. Retrieved from http://onlinelibrary.wiley.com/doi/10.1002/mrm.10276/pdf.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-F2A2-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-9BDB-3
Genre: Journal Article

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Watanabe, T., Author
Natt, O., Author
Boretius, S.1, Author              
Frahm, J.1, Author              
Michaelis, T.1, Author              
Affiliations:
1Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society, ou_578634              

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Free keywords: magnetic resonance imaging; mouse; brain; manganese; hippocampus
 Abstract: Follow-up T-1-weighted 3D gradient-echo MRI (2.35 T) of murine brain in vivo (N = 5) at 120 mum isotropic resolution revealed spatially distinct signal increases 6-48 hr after subcutaneous application of MnCl2 (20 mg/kg). The effects result from a shortening of the water proton T-1 relaxation time due to the presence of unchelated paramagnetic Mn2+ ions, which access the brain by systemic circulation and crossing of the blood-brain barrier (BBB). A pronounced Mn2+-induced signal enhancement was first seen in structures without a BBB, such as the choroid plexus, pituitary gland, and pineal gland. Within 24 hr after administration, Mn2+ contrast highlighted the olfactory bulb, inferior colliculi, cerebellum, and the CA3 subfield of the hippocampus. The affinity of Mn2+ to various brain systems suggests the neuronal uptake of Mn2+ ions from the extracellular space and subsequent axonal transport. Thus, at least part of the Mn2+ contrast reflects a functional brain response of behaving animals, for example, in the olfactory system. In vivo MRI staining of the brain by systemic administration of MnCl2 may contribute to phenotyping mutant mice with morphologic and functional alterations of the central nervous system. (C) 2002 Wiley-Liss, Inc.

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Language(s): eng - English
 Dates: 2002-11
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Magnetic Resonance in Medicine
Source Genre: Journal
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Pages: - Volume / Issue: 48 (5) Sequence Number: - Start / End Page: 852 - 859 Identifier: -