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B cell and/or autoantibody deficiency do not prevent neuropsychiatric disease in murine systemic lupus erythematosus

Wen, J and Doerner, J and Chalmers, S and Stock, A and Wang, H and Gullinello, M and Shlomchik, MJ and Putterman, C (2016) B cell and/or autoantibody deficiency do not prevent neuropsychiatric disease in murine systemic lupus erythematosus. Journal of Neuroinflammation, 13 (1).

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Background: Neuropsychiatric lupus (NPSLE) can be one of the earliest clinical manifestations in human lupus. However, its mechanisms are not fully understood. In lupus, a compromised blood-brain barrier may allow for the passage of circulating autoantibodies into the brain, where they can induce neuropsychiatric abnormalities including depression-like behavior and cognitive abnormalities. The purpose of this study was to determine the role of B cells and/or autoantibodies in the pathogenesis of murine NPSLE. Methods: We evaluated neuropsychiatric manifestations, brain pathology, and cytokine expression in constitutively (JhD/MRL/lpr) and conditionally (hCD20-DTA/MRL/lpr, inducible by tamoxifen) B cell-depleted mice as compared to MRL/lpr lupus mice. Results: We found that autoantibody levels were negligible (JhD/MRL/lpr) or significantly reduced (hCD20-DTA/MRL/lpr) in the serum and cerebrospinal fluid, respectively. Nevertheless, both JhD/MRL/lpr and hCD20-DTA/MRL/lpr mice showed profound depression-like behavior, which was no different from MRL/lpr mice. Cognitive deficits were also observed in both JhD/MRL/lpr and hCD20-DTA/MRL/lpr mice, similar to those exhibited by MRL/lpr mice. Furthermore, although some differences were dependent on the timing of depletion, central features of NPSLE in the MRL/lpr strain including increased blood-brain barrier permeability, brain cell apoptosis, and upregulated cytokine expression persisted in B cell-deficient and B cell-depleted mice. Conclusions: Our study surprisingly found that B cells and/or autoantibodies are not required for key features of neuropsychiatric disease in murine NPSLE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Wen, J
Doerner, J
Chalmers, S
Stock, A
Wang, H
Gullinello, M
Shlomchik, MJMSHLOMCH@pitt.eduMSHLOMCH
Putterman, C
Date: 7 April 2016
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Journal or Publication Title: Journal of Neuroinflammation
Volume: 13
Number: 1
DOI or Unique Handle: 10.1186/s12974-016-0537-3
Institution: University of Pittsburgh
Schools and Programs: School of Medicine > Immunology
Refereed: Yes
Date Deposited: 21 Jul 2016 19:40
Last Modified: 30 Mar 2021 13:56


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