Desensitization of ANG II tonic contractile response of the guinea pig ileum is related to membrane repolarization determined by Ca2+-activated K+ (maxi-K+) channel opening. ANG II-stimulated depolarized myocytes presented ...

We investigated the role of protein kinase in the desensitization of the angiotensin II induced contraction of guinea pig ileum. in contrast to their antagonistic effects on enzymatic activity, body activation blockers ...

Large conductance calcium- and voltage-sensitive K+ (MaxiK) channels share properties of voltage- and ligand-gated ion channels. In voltage-gated channels, membrane depolarization promotes the displacement of charged ...

Maxi-K channels consist of a pore-forming alpha subunit and a regulatory beta subunit, which confers the channel with a higher Ca2+ sensitivity. Estradiol bound to the beta subunit and activated the Maxi-K channel (hSlo) ...

The materno-fetal transfer of metabolites and nutrients requires the operation of specific transport mechanisms through syncytiotrophoblast membranes. Electrophysiological studies on these cells are scarce and, because of ...

Large conductance calcium- and voltage-sensitive K+ (MaxiK) channels share properties of voltage-and ligand-gated ion channels. In voltage-gated channels, membrane depolarization promotes the displacement of charged residues ...

The effect of uroguanylin (UGN) oil K(+) and H(+) secretion in the renal tubules of the rat kidney was studied using in vivo stationary microperfusion. For the study of K(+) secretion, a tubule was Punctured to inject a ...

The effect of uroguanylin (UGN) oil K(+) and H(+) secretion in the renal tubules of the rat kidney was studied using in vivo stationary microperfusion. For the study of K(+) secretion, a tubule was Punctured to inject a ...

Background. Previous studies from our laboratory have shown that luminal perfusion with arginine vasopressin (AVP) stimulates distal tubule secretory potassium flux (J(K)) via V1 receptors (Am J Physiol 278: F809- F816, ...