Microglial activation and polarization in type 2 diabetes-related cognitive impairment: A focused review of

Yue Tian1, Guangchan Jing1, Mei Ma1

  • 1Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.

Insights

Type 2 diabetes (T2D) impacts brain health. This review explores how microglia, the brain's immune cells, become activated and polarized, contributing to T2D-related cognitive impairment.

Area of Science:

  • Neuroscience
  • Immunology
  • Endocrinology

Background:

  • Microglia are central nervous system immune cells implicated in cognitive impairment.
  • Type 2 diabetes (T2D) is increasingly linked to neurological deficits and cognitive decline.
  • Understanding microglial roles in T2D is crucial for addressing associated cognitive impairment.

Purpose of the Study:

  • To review the mechanisms of microglial activation and polarization in T2D.
  • To elucidate the link between microglial dynamics and T2D-related cognitive impairment.
  • To provide insights for future therapeutic strategies targeting microglia.

Main Methods:

  • Literature review focusing on microglial activation and polarization in T2D.
  • Analysis of studies investigating inflammatory responses, neuronal apoptosis, amyloid-β, and Tau pathology.
  • Synthesis of current knowledge on microglial involvement in T2D cognitive dysfunction.

Main Results:

  • Microglial activation and polarization are key mediators of T2D-related cognitive impairment.
  • These processes contribute to neuroinflammation, neuronal apoptosis, and protein aggregation (amyloid-β, Tau).
  • Specific pathways linking T2D to altered microglial states and cognitive deficits are identified.

Conclusions:

  • Microglial activation and polarization represent critical mechanisms underlying cognitive impairment in T2D.
  • Targeting microglial pathways offers potential therapeutic avenues for T2D-related neurological complications.
  • Further research is warranted for clinical translation of microglial-based therapies.