A monoclonal antibody against RAGE alters gene expression and is protective in experimental models of sepsis and pneumococcal pneumonia.
2011
ABSTRACT The RAGE (receptor for advanced glycation end products) is believed to play a role in sepsis by perpetuating inflammation. The interaction of RAGE with a variety of host-derived ligands that accumulate during stress and inflammation further induces the expression of RAGE. It was previously shown that a rat anti-RAGE monoclonal antibody protected mice from lethality in a cecal ligation and puncture model. We studied the effects of a humanized anti-RAGE monoclonal antibody in the murine pneumococcal pneumonia model of sepsis. Moreover, a gene expression analysis was performed in lung tissue of animals that underwent cecal ligation and puncture and treated with the rat anti-RAGE monoclonal antibody, compared with controls. Administration of humanized anti-RAGE mAb 6 h after intratracheal infection with Streptococcus pneumoniae improved mortality in BALB/c mice whether a 7.5 mg/kg (P
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