scholarly journals Sodium-potassium pump current in smooth muscle cells from mesenteric resistance arteries of the guinea-pig

1999 ◽  
Vol 519 (1) ◽  
pp. 203-212 ◽  
Author(s):  
Yoshito Nakamura ◽  
Yusuke Ohya ◽  
Isao Abe ◽  
Masatoshi Fujishima
1998 ◽  
Vol 123 (4) ◽  
pp. 675-682 ◽  
Author(s):  
Yoshito Nakamura ◽  
Yusuke Ohya ◽  
Uran Onaka ◽  
Koji Fujii ◽  
Isao Abe ◽  
...  

2001 ◽  
Vol 534 (2) ◽  
pp. 313-326 ◽  
Author(s):  
Yoshiaki Ohi ◽  
Hisao Yamamura ◽  
Norihiro Nagano ◽  
Susumu Ohya ◽  
Katsuhiko Muraki ◽  
...  

1993 ◽  
Vol 265 (6) ◽  
pp. C1723-C1728 ◽  
Author(s):  
A. D. Bonev ◽  
M. T. Nelson

We explored the possibility that muscarinic receptor stimulation can inhibit ATP-sensitive K+ (KATP) channels in smooth muscle cells from guinea pig urinary bladder. Whole cell K+ currents were measured in smooth muscle cells isolated from the detrusor muscle of the guinea pig bladder. Stimulation of muscarinic receptors by carbachol (CCh; 10 microM) inhibited KATP currents by 60.7%. Guanosine 5'-O-(2-thiodiphosphate) in the pipette (internal) solution prevented the CCh-induced inhibition of KATP currents. Activators of protein kinase C (PKC), a diacylglycerol analogue, and phorbol 12-myristate 13-acetate inhibited KATP currents by 63.5 and 73.9%, respectively. Blockers of PKC (bisindolylmaleimide GF-109203X and calphostin C) greatly reduced CCh inhibition of KATP currents. We propose that muscarinic receptor stimulation inhibits KATP channels in smooth muscle cells from urinary bladder through activation of PKC.


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