Abstract
Microglia are the macrophage immune cells in the CNS and monitor extracellular microenvironment in healthy brains. They can be rapidly activated under pathological conditions and move to a lesion site following chemotactic gradients and unfold their phagocytotic activities to clear tissue debris, damaged cells, or microbes. A growing body of studies illustrated the importance of ion transporters in regulating activation and migration of microglia and peripheral immune cells in cerebral ischemic conditions. This chapter summarized roles of Na+/H+ exchanger, Na+/Ca2+ exchanger, and K+/Cl− cotransporters in regulation of pHi, Ca2+-spiking events, cell volume, and membrane signal molecule expression during microglia/peripheral immune cell migration, adhesion, and activation. In light of the detrimental effects of excessive pro-inflammatory response on ischemic brain injury, targeting ion transporters may be a new therapeutic strategy to minimize neuroinflammatory reactions after ischemic stroke.
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- NHE:
-
Na+/H+ exchanger
- NCX:
-
Na+/Ca2+ exchange
- MCAO:
-
Middle cerebral artery occlusion
- NOX:
-
NADPH oxidase
- OGD:
-
Oxygen and glucose deprivation
- pHi:
-
Intracellular pH
- ROS:
-
Reactive oxygen species
- [Ca2+]i :
-
Intracellular Ca2+
- [Na+]i :
-
Intracellular Na+
- KCC:
-
K+–Cl− cotransporters
- IL:
-
Interleukin
- TNF-α:
-
Tumor necrosis factor alpha
- ATP:
-
Adenosine triphosphate
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Acknowledgment
This work was supported by NIH grants R01NS 48216 and R01NS 38118 (D. Sun).
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Yuan, H., Shi, Y., Sun, D. (2014). Ion Transporters in Microglial Function: New Therapeutic Targets for Neuroinflammation in Ischemic Stroke?. In: Chen, J., Hu, X., Stenzel-Poore, M., Zhang, J. (eds) Immunological Mechanisms and Therapies in Brain Injuries and Stroke. Springer Series in Translational Stroke Research, vol 6. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8915-3_8
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