Title : Coupling to Gs and G(q/11) of histamine H2 receptors heterologously expressed in adult rat atrial myocytes.

Pub. Date : 2003 Sep 23

PMID : 12972295






3 Functional Relationships(s)
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1 To investigate histamine effects in H2-R-transfected rat atrial myocytes, endogenous GIRK currents and L-type Ca2+ currents were used as functional assays. Histamine histamine receptor H 2 Rattus norvegicus
2 In H2-R-overexpressing cells, histamine activated IK(ACh) via Gs-derived betagamma subunits since the histamine-induced current was insensitive to pertussis toxin. Histamine histamine receptor H 2 Rattus norvegicus
3 When IK(ACh) was maximally activated by GTP-gamma-S, histamine induced an irreversible inhibition of the inward current in a fraction of H2-R-transfected cells. Histamine histamine receptor H 2 Rattus norvegicus