Clinical significance
In the CNS, activation of the NPSR by NPS promotes arousal and anxiolytic-like effects. [8] [9]
In addition, mututations in NPSR have been linked to a susceptibility to asthma (rs3249801, A107I). [10] Hence NPSR has also been called GPRA (G protein-coupled receptor for asthma susceptibility). Activation of NPSR in the airway epithelium has a number of effects including upregulation of matrix metalloproteinases which are involved in the pathogenesis of asthma. [11] It has been shown that activation of NPSR by NPS affects both gastrointestinal motility and mucosal permeability simultaneously. Aberrant signaling and upregulation of NPSR1 could potentially exacerbate dysmotility and hyperpermeability by local mechanisms in gastrointestinal functional and inflammatory reactions. [12]
The very rare NPSR mutation Y206H, which makes the receptor more sensitive to NPS, may cause familial natural short sleep. [13] This finding has not been investigated in animal models, and is sufficiently rare that a biobank study was unable to find other carriers to attempt a replication of the association with sleep duration. [14]
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