Monocyte Chemoattractant Protein 1 Does Not Contribute to Protective Immunity against Pneumococcal Pneumonia

Abstract
To determine the role of monocyte chemoattractant protein 1 (MCP-1) during pneumococcal pneumonia, MCP-1 knockout and wild-type mice were infected withStreptococcus pneumoniae. Pulmonary MCP-1 levels were strongly correlated to bacterial loads in wild-type mice. However, MCP-1 knockout and wild-type mice were indistinguishable with respect to bacterial growth, inflammatory responses, and lethality.