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Related Experiment Video

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Does lipopolysaccharide-based neuroinflammation induce microglia polarization?

Daniel Hernandez Baltazar1, Rasajna Nadella2, Abril Barrientos Bonilla3

  • 1CONACyT-Instituto de Neuroetología, Universidad Veracruzana, Xalapa, Veracruz, Mexico.

Folia Neuropathologica
|July 31, 2020
PubMed
Summary

Lipopolysaccharide (LPS) exposure can worsen neurological diseases by causing neuroinflammation. This review explores microglia phenotypes, M1 (neurotoxic) and M2 (neuroprotective), in LPS-induced models to understand neuronal survival in the substantia nigra.

Keywords:
lipopolysaccharidemicroglia cellsneuroinflammation.proliferationcell signalling

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Area of Science:

  • Neuroscience
  • Immunology
  • Pathology

Background:

  • Lipopolysaccharide (LPS) is a potent immunogen linked to neuroinflammation and dopaminergic degeneration.
  • Neuroinflammation is strongly associated with the progression of neurological diseases.
  • Microglia phenotypes, M1 (neurotoxic) and M2 (neuroprotective), influence neuronal survival in the substantia nigra.

Purpose of the Study:

  • To review current findings on microglia roles in LPS-based murine models.
  • To identify biomarkers associated with microglia phenotypes in neuroinflammation.
  • To explore natural and synthetic immune modulators for potential therapeutic interventions.

Main Methods:

  • Review of existing literature on LPS-induced neuroinflammation in murine models.
  • Analysis of studies investigating microglia phenotypes (M1 and M2) and their impact on dopaminergic neurons.
  • Examination of identified biomarkers for microglia states.
  • Evaluation of immune modulators targeting microglia.

Main Results:

  • LPS administration triggers neuroinflammation, impacting dopaminergic neuron survival.
  • A shift between M1 and M2 microglia phenotypes is critical in determining neuronal fate.
  • Specific biomarkers are associated with M1 and M2 states, offering diagnostic potential.
  • Various natural and synthetic compounds show immunomodulatory effects on microglia.

Conclusions:

  • Microglia play a crucial role in LPS-induced neuroinflammation and dopaminergic degeneration.
  • Understanding microglia phenotypes and biomarkers is key to developing therapeutic strategies.
  • Immune modulators targeting microglia present a promising avenue for treating LPS-related neurological conditions.