title: Dynamic zinc pools in mouse choroid plexus.
abstract: We examined the presence of Zn-transporters (ZnT1, ZnT3, ZnT4, and ZnT6) proteins and zinc ions in rat choroid epithelium with immunohistochemistry and zinc selenide autometallography (ZnSe(AMG)). The four ZnT proteins were all expressed in the choroid epithelial cells. ZnT3 immunostaining was found in vesicle membranes in the apical part of the cells, associated to the microvillus membrane. Correspondingly, the ZnSe(AMG) technique revealed zinc ions in small vesicles, in microvilli, and multivesicular bodies in the epithelial cells. Traceable zinc ions were also found in lysosome-like organelles of fenestrated endothelial cells, but here no corresponding ZnT3 immunostaining was seen. The observations suggests that the choroid plexus is instrumental to regulation of the level of zinc ions in the cerebrospinal fluid.
authors.affiliation: Department of Neurobiology, Institute of Anatomy, University of Aarhus, DK-8000 Aarhus C, Denmark.
authors.forename: Zhan-You
authors.initials: ZY
authors.lastname: Wang
authors.forename: Meredin
authors.initials: M
authors.lastname: Stoltenberg
authors.forename: Seung Mook
authors.initials: SM
authors.lastname: Jo
authors.forename: Liping
authors.initials: L
authors.lastname: Huang
authors.forename: Agnete
authors.initials: A
authors.lastname: Larsen
authors.forename: Annica
authors.initials: A
authors.lastname: Dahlström
authors.forename: Gorm
authors.initials: G
authors.lastname: Danscher
mesh_terms: D000818:Animals; D002352:Carrier Proteins / Q000032:analysis* / Q000378:metabolism; D002831:Choroid Plexus / Q000737:chemistry* / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D015032:Zinc / Q000032:analysis* / Q000378:metabolism
chemical_list: D002352:Carrier Proteins; C017800:zinc-binding protein; D015032:Zinc