Journal
ACTA PHARMACOLOGICA SINICA
Volume 34, Issue 1, Pages 33-38Publisher
ACTA PHARMACOLOGICA SINICA
DOI: 10.1038/aps.2012.81
Keywords
ion channels; acidosis; ASIC; proton; stroke; neurological disorders
Funding
- NIH [R01NS047506, R01NS066027]
- NIMHD [S21MD000101, U54 RR026137]
- AHA [0840132N]
- ALZ [IIRG-10-173350]
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In the nervous system, a decrease in extracellular pH is a common feature of various physiological and pathological processes, including synaptic transmission, cerebral ischemia, epilepsy, brain trauma, and tissue inflammation. Acid-sensing ion channels (ASICs) are proton-gated cation channels that are distributed throughout the central and peripheral nervous systems. Following the recent identification of ASICs as critical acid-sensing extracellular proton receptors, growing evidence has suggested that the activation of ASICs plays important roles in physiological processes such as nociception, mechanosensation, synaptic plasticity, learning and memory. However, the over-activation of ASICs is also linked to adverse outcomes for certain pathological processes, such as brain ischemia and multiple sclerosis. Based on the well-demonstrated role of ASIC1a activation in acidosis-mediated brain injury, small molecule inhibitors of ASIC1a may represent novel therapeutic agents for the treatment of neurological disorders, such as stroke.
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