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Related Experiment Videos

MIP-1 alpha and MIP-1 beta induction by dengue virus.

T A Spain-Santana1, S Marglin, F A Ennis

  • 1Center for Infectious Disease and Vaccine Research, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA.

Journal of Medical Virology
|September 6, 2001
PubMed
Summary
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Dengue virus infection can cause mild or severe disease. Researchers found that MIP-1 alpha and MIP-1 beta chemokines are induced by dengue virus infection, potentially contributing to severe dengue hemorrhagic fever symptoms.

Area of Science:

  • Virology
  • Immunology
  • Pathology

Background:

  • Dengue virus (DV) infection presents as dengue fever (DF) or severe dengue hemorrhagic fever (DHF).
  • DHF is more common in secondary DV infections, suggesting immune-mediated pathology.
  • Immune responses to DV infection may lead to immunopathology.

Purpose of the Study:

  • To investigate the role of specific cellular factors, MIP-1 alpha and MIP-1 beta, in DV infection.
  • To determine if MIP-1 induction is linked to DV replication and disease.

Main Methods:

  • Infection of a myelomonocytic cell line and peripheral blood mononuclear cells with DV.
  • Analysis of MIP-1 alpha and MIP-1 beta induction.
  • Assessment of MIP-1 gene expression in patients with dengue disease.

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Main Results:

  • Dengue virus infection induces MIP-1 alpha and MIP-1 beta.
  • MIP-1 induction requires replication-competent DV, not secreted factors.
  • MIP-1 genes are expressed in patients experiencing dengue disease.

Conclusions:

  • MIP-1 alpha and MIP-1 beta are key chemokines induced by DV infection.
  • These chemokines may play a role in the immunopathology of dengue infections.
  • MIP-1 chemokines might contribute to fever and bone marrow suppression in dengue patients.