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Complement and humoral adaptive immunity in the human choroid plexus: roles for stromal concretions, basement membranes, and epithelium

Moore, G. R. Wayne, Laule, Cornelia, Leung, Esther, Pavlova, Vladimira, Morgan, B. Paul and Esiri, Margaret M. 2016. Complement and humoral adaptive immunity in the human choroid plexus: roles for stromal concretions, basement membranes, and epithelium. Journal of Neuropathology and Experimental Neurology 75 (5) , pp. 415-428. 10.1093/jnen/nlw017

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Abstract

The choroid plexus (CP) provides a barrier to entry of toxic molecules from the blood into the brain and transports vital molecules into the cerebrospinal fluid. While a great deal is known about CP physiology, relatively little is known about its immunology. Here, we show immunohistochemical data that help define the role of the CP in innate and adaptive humoral immunity. The results show that complement, in the form of C1q, C3d, C9, or C9neo, is preferentially deposited in stromal concretions. In contrast, immunoglobulin (Ig) G (IgG) and IgA are more often found in CP epithelial cells, and IgM is found in either locale. C4d, IgD, and IgE are rarely, if ever, seen in the CP. In multiple sclerosis CP, basement membrane C9 or stromal IgA patterns were common but were not specific for the disease. These findings indicate that the CP may orchestrate the clearance of complement, particularly by deposition in its concretions, IgA and IgG preferentially via its epithelium, and IgM by either mechanism.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Medicine
Publisher: Oxford University Press
ISSN: 0022-3069
Date of First Compliant Deposit: 21 October 2020
Date of Acceptance: 18 March 2016
Last Modified: 22 Oct 2020 11:00
URI: http://orca.cf.ac.uk/id/eprint/135839

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