Key result
Noradrenaline induces smooth muscle depolarization via α1-adrenoceptor and PKC-dependent inhibition of K+ currents.
Why the study?
The ionic mechanisms and signal transduction underlying noradrenaline-induced depolarization in guinea-pig vas deferens smooth muscle cells were not fully understood.
Population
Single smooth muscle cells of guinea-pig vas deferens
Comparison
Noradrenaline (0.1-100 μm) with or without GDPβS, bisindolylmaleimide, and 12-O-tetradecanoylphorbol 13-acetate
Design
Preclinical experimental study
Authors
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No immediate clinical implications; leaves open relevance of this α1-PKC pathway to human smooth muscle physiology.
Noradrenaline induces depolarization in guinea-pig vas deferens smooth muscle cells by inhibiting K+ currents through an α1-adrenoceptor and PKC-dependent pathway.
Kamimura et al. (2000) studied this question. Noradrenaline was evaluated on Depolarization and K+ current inhibition. Noradrenaline induced depolarization in guinea-pig vas deferens smooth muscle cells via α1-adrenoceptor and protein kinase C-dependent inhibition of K+ currents.
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