Abstract:
PURPOSE:To determine the role of IL-33 in resistance to Pseudomonas aeruginosa keratitis. METHODS:Corneal IL-33 mRNA and protein levels were tested in susceptible C57BL/6 (B6) and resistant BALB/c mice. B6 mice were injected with recombinant mouse IL-33 (rmIL-33) and disease severity, bacterial load, polymorphonuclear neutrophils (PMN) infiltrate, gene expression of inflammatory, and T-helper (Th)1/Th2 cytokines were tested by RT-PCR. IL-33 signaling and macrophage (Mvarphi) polarization also were examined. RESULTS:IL-33 mRNA and protein were expressed constitutively in the normal corneas of both groups and were significantly elevated at 1 to 5 days after infection in BALB/c over B6 mice. rmIL-33-treated B6 mice showed less severe disease than did PBS controls and exhibited decreased bacterial load, PMN infiltrate, and corneal mRNA levels for IL-1beta, MIP-2, and TNF-alpha. Th2-type cytokines (IL-4, -5, -10) also were significantly upregulated, and protein levels for TNF-alpha and IL-10 confirmed the mRNA data. To further investigate IL-33 in corneal inflammation, it was overexpressed in Mvarphi (RAW264.7 cells). This significantly increased IL-5 and IL-10, while it decreased IFN-gamma and other pro-inflammatory cytokines. The role of the Mvarphi was further tested in infected rmIL-33 compared with PBS-injected mice. Immunostaining showed that rmIL-33 injection shifted Mvarphi polarization from NO synthase 2 to arginase production. Furthermore, peritoneally elicited cells (B6 mice) treated with lipopolysaccharide and rmIL-33 exhibited elevated ST2 levels and a shift from IL-12 to IL-10 mRNA production. CONCLUSIONS:These data provide evidence that IL-33 promotes a Th2-type immune response and reduces inflammation by polarizing the Mvarphi production of anti-inflammatory mediators in the cornea.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Hazlett LD,McClellan SA,Barrett RP,Huang X,Zhang Y,Wu M,van Rooijen N,Szliter Edoi
10.1167/iovs.09-3983subject
Has Abstractpub_date
2010-03-01 00:00:00pages
1524-32issue
3eissn
0146-0404issn
1552-5783pii
iovs.09-3983journal_volume
51pub_type
杂志文章abstract:PURPOSE:This study was performed to investigate motion perception in patients with glaucoma. METHODS:A random dot motion test was used to measure three aspects of central motion perception: minimum displacement threshold (Dmin), maximum displacement threshold (Dmax), and coherence threshold (signal to noise). Motion p...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1993-12-01 00:00:00
abstract:PURPOSE:To decipher the biological pathways involved in keratoconus pathophysiology by determining the patterns of differential gene expression between keratoconus and control corneas. METHODS:RNA was extracted from surgically removed corneas of 10 keratoconus patients and from normal corneas of 10 control patients wh...
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:1997-01-01 00:00:00
abstract:PURPOSE:Endogenous anterior uveitis (AU), when untreated, may lead to vision loss. This study compared the safety and efficacy of difluprednate versus prednisolone acetate for the treatment of this condition. METHODS:This phase III, double-masked, noninferiority study randomized patients with mild to moderate endogeno...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究,随机对照试验
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abstract:PURPOSE:To examine the effects of modification of immune effector cells, including macrophages, in the pathogenesis of herpes simplex virus retinitis in BALB/c mice. METHODS:Two intravitreal injections (2 microliters each) of anti-CD11b monoclonal antibody (mAb) [13 micrograms/microliters] were administered to the con...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1994-06-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2005-03-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2010-11-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:2000-04-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:2001-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:1986-02-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:1990-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:1982-04-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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journal_title:Investigative ophthalmology & visual science
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journal_title:Investigative ophthalmology & visual science
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更新日期:2002-07-01 00:00:00
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更新日期:2003-05-01 00:00:00
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