Inflammatory mediator via pH modulation

The mechanism described by "Inflammatory mediator via pH modulation" refers to molecules whose function is strongly regulated by extracellular or intracellular pH in the context of inflammation. During inflammation, tissue pH drops (acidosis), which activates a series of proton-sensing receptors and ion channels—notably G protein-coupled receptors (GPR65/TDAG8, GPR4, GPR68/OGR1) and acid-sensing ion channels (ASIC3)—mediating both pro- and anti-inflammatory effects[4][3][2]. GPR65, for example, induces anti-inflammatory signaling in response to acidic pH and is genetically associated with susceptibility to inflammatory bowel disease[4]. ASIC3 is a pain receptor sensitized by low pH and by other inflammatory mediators[3]. Therapeutic approaches often target these receptors to modulate inflammation, pain, and disease progression[4][3][2].

The phrase describes mechanisms where pH modulation affects specific molecular targets. For drugs targeting these, the mechanism of action includes receptor antagonism (e.g., inhibition of pro-inflammatory pH-sensing GPCRs like OGR1, GPR4) and ion channel blockade (e.g., for ASIC3).