title: The dichotomized role for acid sensing ion channels in musculoskeletal pain and inflammation.
abstract: Chronic muscle pain affects between 11 and 24% of the world's population with the majority of people experiencing musculoskeletal pain at some time in their life. Acid sensing ion channels (ASICs) are important sensors of modest decreases in extracellular pH that occur within the physiological range. These decreases in extracellular pH occur in response to inflammation, fatiguing exercise, and ischemia. Further, injection of acidic saline into muscle produces enhanced nociceptive behaviors in animals and pain in human subjects. Of the different types of ASICs, ASIC3 and ASIC1 have been implicated in transmission of nociceptive information from the musculoskeletal system. The current review will provide an overview of the evidence for ASIC3 and ASIC1 in musculoskeletal pain in both inflammatory and non-inflammatory models. This article is part of the Special Issue entitled 'Acid-Sensing Ion Channels in the Nervous System'.
authors.affiliation: Department of Physical Therapy and Rehabilitation Science, Neuroscience Graduate Program, Pain Research Program, University of Iowa, Iowa City, IA 52242, USA. Electronic address: kathleen-sluka@uiowa.edu.
authors.forename: Kathleen A
authors.initials: KA
authors.lastname: Sluka
authors.affiliation: Department of Physical Therapy and Rehabilitation Science, Neuroscience Graduate Program, Pain Research Program, University of Iowa, Iowa City, IA 52242, USA.
authors.forename: Nicholas S
authors.initials: NS
authors.lastname: Gregory
mesh_terms: D062565:Acid Sensing Ion Channels / Q000378:metabolism*; D000818:Animals; D006801:Humans; D007249:Inflammation / Q000378:metabolism*; D059352:Musculoskeletal Pain / Q000378:metabolism*
chemical_list: D062565:Acid Sensing Ion Channels
keywords: ASIC; Acid; Inflammation; Joint; Muscle; Pain; Proton