Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

nanoparticle-based manganese-containing contrast agent SN132D

A contrast agent formulation composed of a polymeric core containing the paramagnetic contrast agent manganese chloride tetrahydrate (MnCl2 4H2O), in which the Mn2+ ions are chelated to phosphonate groups, and covered with a coating layer of covalently attached polyetyleneglycol (PEG)-polymers, that can potentially be used as a contrast enhancer during magnetic resonance imaging (MRI). Upon intravenous administration of the nanoparticle-based manganese-containing contrast agent SN132D, the nanoparticles enhance absorption of the poorly absorbable contrast agent manganese, and selectively accumulates in the tumor microenvironment (TME). Due to the retention of manganese in the TME and its paramagnetic properties, this contrast agent enhances the visualization and detection of tumor cells during MRI.
Synonym:manganese-based macromolecular contrast agent SN132D
manganese-containing nanoparticle contrast agent SN132D
MRI contrast agent SN132D
nanoparticle-based contrast agent with manganese SN132D
US brand name:SpagoPix
Code name:SN132D
Search NCI's Drug Dictionary