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ROCK mediates the inflammatory response in thrombin induced microglia

Guiyun Cui1, Tao Zuo, Qiuchen Zhao

  • 1Department of Neurology, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu Province, China.

Neuroscience Letters
|September 12, 2013
PubMed

Insights

Thrombin triggers microglial inflammation via the ROCK pathway. Inhibiting ROCK or thrombin reduces microglial inflammatory responses, suggesting ROCK pathway

Area of Science:

  • Neuroinflammation
  • Cellular signaling
  • Microbiology

Background:

  • Microglia are key immune cells in the central nervous system.
  • Thrombin can activate microglia, contributing to neuroinflammation.
  • The Rho-associated coiled-coil kinase (ROCK) pathway's role in this activation is unclear.

Purpose of the Study:

  • To determine if the ROCK pathway mediates thrombin-induced microglial inflammatory responses.
  • To investigate the effect of ROCK inhibition on microglial inflammatory markers.

Main Methods:

  • Microglia were stimulated with thrombin.
  • Cells were pretreated with argatroban (thrombin inhibitor) or Y-27632 (ROCK inhibitor).
  • Phagocytosis, nitric oxide (NO), and tumor necrosis factor-alpha (TNF-α) levels were measured.

Main Results:

  • Thrombin significantly increased microglial phagocytosis and expression of ROCK, NO, and TNF-α.
  • Inhibiting thrombin or ROCK decreased phagocytosis and inflammatory mediator expression.
  • ROCK pathway activation is linked to thrombin-induced microglial inflammatory responses.

Conclusions:

  • The ROCK pathway plays a significant role in thrombin-induced microglial inflammation.
  • Targeting the ROCK pathway could be a therapeutic strategy for neuroinflammatory conditions involving thrombin.
Keywords:
ArgatrobanInflammationMicrogliaROCKY-27632

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