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Alternatively activated macrophages during parasite infections

Wim Noël1, Geert Raes, Gholamreza Hassanzadeh Ghassabeh

  • 1Department of Cellular and Molecular Interactions, Flemish Interuniversity Institute for Biotechnology, Free University of Brussels (VIB-VUB), Building E, Floor 8, Pleinlaan 2, B-1050 Brussels, Belgium.

Trends in Parasitology
|March 24, 2004
PubMed

Insights

Macrophages can adopt different roles based on their environment. This review explores alternatively activated macrophages, focusing on their functions and roles in parasite diseases, which remain poorly understood.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Macrophages exhibit diverse functional states depending on cytokine signals.
  • Classically activated macrophages (by interferon gamma) are well-characterized, especially in infection immunity.
  • Alternatively activated macrophages, induced by T helper cell type 2 (Th2) cytokines, represent a less understood subset.

Purpose of the Study:

  • To elucidate the nature and functions of alternatively activated macrophages.
  • To discuss the evidence for alternatively activated macrophages in parasitic diseases.
  • To explore their potential impact on disease outcomes.

Main Methods:

  • Literature review and synthesis of existing research.
  • Analysis of studies investigating macrophage polarization.
  • Examination of data related to parasitic infections and immune responses.

Main Results:

  • Alternatively activated macrophages possess distinct functions from classically activated ones.
  • Evidence suggests their presence and involvement in various parasitic infections.
  • Their specific roles in disease progression and resolution are still being defined.

Conclusions:

  • Alternatively activated macrophages represent a critical but understudied arm of the immune system.
  • Further research is needed to fully characterize their functions and therapeutic potential in parasitic diseases.

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