Abstract:
BACKGROUND:In meningitis, the cerebrospinal fluid contains high levels of innate immune molecules (e.g. complement) which are essential to ward off the infectious challenge and to promote the infiltration of phagocytes (neutrophils, monocytes). However, epithelial cells of either the ependymal layer, one of the established niche for adult neural stem cells, or of the choroid plexus may be extremely vulnerable to bystander attack by cytotoxic and cytolytic complement components. METHODS:In this study, we assessed the capacity of brain epithelial cells to express membrane-bound complement regulators (ie, CD35, CD46, CD55 and CD59) in vitro and in situ by immunostaining of control and meningitis human brain tissue sections. RESULTS:Double immunofluorescence experiments for ependymal cell markers (GFAP, S100, ZO-1, E-cadherin) and complement regulators indicated that the human ependymal cell line model was strongly positive for CD55, CD59 compared to weak stainings for CD46 and CD35. In tissues, we found that CD55 was weakly expressed in control choroid plexus and ependyma but was abundantly expressed in meningitis. Anti-CD59 stained both epithelia in apical location while increased CD59 staining was solely demonstrated in inflamed choroid plexus. CD46 and CD35 were not detected in control tissue sections. Conversely, in meningitis, the ependyma, subependyma and choroid plexus epithelia were strongly stained for CD46 and CD35. CONCLUSION:This study delineates for the first time the capacity of brain ependymal and epithelial cells to respond to and possibly sustain the innate complement-mediated inflammatory insult.
journal_name
J Neuroinflammationjournal_title
Journal of neuroinflammationauthors
Canova C,Neal JW,Gasque Pdoi
10.1186/1742-2094-3-22subject
Has Abstractpub_date
2006-09-02 00:00:00pages
22issn
1742-2094pii
1742-2094-3-22journal_volume
3pub_type
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/s12974-020-02030-w
更新日期:2020-11-27 00:00:00
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更新日期:2020-06-19 00:00:00
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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journal_title:Journal of neuroinflammation
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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更新日期:2018-06-09 00:00:00
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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更新日期:2020-09-09 00:00:00
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更新日期:2019-02-01 00:00:00
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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更新日期:2008-05-21 00:00:00
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pub_type: 杂志文章
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更新日期:2014-12-13 00:00:00
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journal_title:Journal of neuroinflammation
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journal_title:Journal of neuroinflammation
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journal_title:Journal of neuroinflammation
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更新日期:2013-03-19 00:00:00
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journal_title:Journal of neuroinflammation
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章,评审
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
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更新日期:2020-03-09 00:00:00
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journal_title:Journal of neuroinflammation
pub_type: 杂志文章
doi:10.1186/1742-2094-9-98
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journal_title:Journal of neuroinflammation
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doi:10.1186/1742-2094-8-165
更新日期:2011-11-24 00:00:00