The alpha1-adrenergic receptors: diversity of signaling networks and regulation.

Article Details


Cotecchia S

The alpha1-adrenergic receptors: diversity of signaling networks and regulation.

J Recept Signal Transduct Res. 2010 Dec;30(6):410-9. doi: 10.3109/10799893.2010.518152. Epub 2010 Oct 18.

PubMed ID
20954794 [ View in PubMed

The alpha(1)-adrenergic receptor (AR) subtypes (alpha(1a), alpha(1b), and alpha(1d)) mediate several physiological effects of epinephrine and norepinephrine. Despite several studies in recombinant systems and insight from genetically modified mice, our understanding of the physiological relevance and specificity of the alpha(1)-AR subtypes is still limited. Constitutive activity and receptor oligomerization have emerged as potential features regulating receptor function. Another recent paradigm is that beta arrestins and G protein-coupled receptors themselves can act as scaffolds binding a variety of proteins and this can result in growing complexity of the receptor-mediated cellular effects. The aim of this review is to summarize our current knowledge on some recently identified functional paradigms and signaling networks that might help to elucidate the functional diversity of the alpha(1)-AR subtypes in various organs.

DrugBank Data that Cites this Article

Drug Targets
DrugTargetKindOrganismPharmacological ActionActions
EpinephrineAlpha-1B adrenergic receptorProteinHumans
EpinephrineAlpha-1D adrenergic receptorProteinHumans