Abstract
It has been speculated that beta-chemokines play a pivotal role in the development of peripheral nervous system (PNS) disorders characterized by mononuclear cell infiltration. In experimental allergic neuritis (EAN), an animal model for human Guillain-Barré syndrome (GBS) with mononuclear cell infiltration, we found by quantitative PCR that beta-chemokine messages were upregulated during the active stage. Moreover, an increase in the monocyte chemoattractant protein-1 (MCP-1) message was found in the preclinical stage of EAN, suggesting the critical role of MCP-1 for inducing mononuclear cell infiltrations in this model. Since many cell lineages other than immune cells can produce chemokines, this early upregulation of MCP-1 may be mediated by non-immune cells, probably endothelia or Schwann cells. To date, apart from MCP-1, only RANTES (Regulated on activation, normal T cell expressed and secreted) and macrophage inflammatory protein (MIP)-1alpha have been examined in EAN and found to have similar kinetics of induction. Therefore, understanding the regulation of production of these chemokines as well as mechanisms of inhibiting chemokine/receptor interactions in the PNS may ultimately lead to disease-specific therapy for GBS and related demyelinating disorders.
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