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  • Susceptibility to endotoxin induced uveitis is not reduced in mice deficient in BLT1, the high affinity leukotriene B4 receptor

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Laboratory science - Scientific reports
Susceptibility to endotoxin induced uveitis is not reduced in mice deficient in BLT1, the high affinity leukotriene B4 receptor
  1. J R Smith1,
  2. K Subbarao2,
  3. D T Franc1,
  4. B Haribabu2,
  5. J T Rosenbaum1
  1. 1Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
  2. 2James Graham Brown Cancer Center and Department of Microbiology & Immunology, University of Louisville, Louisville, KY, USA
  1. Correspondence to: Dr J R Smith Casey Eye Institute, Oregon Health & Science University, 3375 SW Terwilliger Blvd, Portland, Oregon, USA 97239–4197; smithjusohsu.edu

Abstract

Aim: To investigate the role of arachidonic acid derived chemotactic factor, LTB4, in the development of endotoxin induced uveitis (EIU), using mice deficient in the BLT1 gene which encodes the high affinity LTB4 receptor.

Methods: BLT1 gene deficient and wild type BALB/c mice were injected intravitreally with Escherichia coli 055:B5 lipopolysaccharide (250 ng/2 μl). Number of leukocytes invading the anterior chamber 24 hours later were counted on tissue cross sections.

Results: In all mice, EIU was characterised by a polymorphonuclear and mononuclear cell infiltrate. Numbers of infiltrating cells did not differ significantly between control and BLT1 gene knockout mice.

Conclusion: Chemotactic factors other than LTB4 are primarily responsible for leukocyte migration into the eye during murine EIU.

  • endotoxin induced uveitis
  • chemotaxis
  • leukotriene B4
  • receptor
  • knockout
  • EIU, endotoxin induced uveitis
  • LTB4, leukotriene B4
  • endotoxin induced uveitis
  • chemotaxis
  • leukotriene B4
  • receptor
  • knockout
  • EIU, endotoxin induced uveitis
  • LTB4, leukotriene B4

https://doi.org/10.1136/bjo.2003.027243

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