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The receptor for advanced glycation end products (RAGE), a multi-ligand member of the immunoglobulin superfamily, contributes to acute and chronic disease processes, including sepsis.    Methods  We studied the possible therapeutic role of RAGE inhibition in the cecal ligation and puncture (CLP) model of polymicrobial sepsis and a model of systemic listeriosis using mice genetically deficient in RAGE expression or mice injected with a rat anti-murine RAGE monoclonal antibody.    Results  The 7-day survival rates after CLP were 80% for RAGE -/-  mice ( n  = 15) ( P  < 0.01 versus wild-type), 69% for RAGE +/-  mice ( n  = 23), and 37% for wild-type mice ( n  = 27). Survival benefits were evident in BALB/c mice given anti-RAGE antibody ( n  = 15 per group) over serum-treated control animals ( P  < 0.05). Moreover, delayed treatment with anti-RAGE antibody up to 24 hours after CLP resulted in a significant survival benefit compared with control mice. There was no significant increase in tissue colony counts from enteric Gram-negative or Gram-positive bacteria in animals treated with anti-RAGE antibody. RAGE -/- , RAGE +/- , and anti-RAGE antibody-treated animals were resistant to lethality from  Listeria monocytogenes  by almost two orders of magnitude compared with wild-type mice.    Conclusion  Further studies are warranted to determine the clinical utility of anti-RAGE antibody as a novel treatment for sepsis.

Inhibition of the RAGE products increases survival in experimental models of severe sepsis and systemic infection