scholarly journals Prostaglandin E receptors in bovine adrenal medulla are coupled to adenylate cyclase via Gi and to phosphoinositide metabolism in a pertussis toxin-insensitive manner

1989 ◽  
Vol 264 (7) ◽  
pp. 3916-3923
Author(s):  
M Negishi ◽  
S Ito ◽  
O Hayaishi
1980 ◽  
Vol 93 (3) ◽  
pp. 339-345 ◽  
Author(s):  
Naokazu Nagata ◽  
Yuriko Ono ◽  
Narimichi Kimura

Abstract. The interaction between parathyroid hormone (PTH) and prostaglandin E1 (PGE1) in influencing cyclic AMP metabolism in rat renal cortical tissue was examined. PTH and PGE1 stimulated additively the adenylate cyclase activity in the homogenate of the tissue. Both PTH and PGE1 enhanced the level of cyclic AMP in the incubated renal cortical tissue, but the effect of their simultaneous addition did not exceed the effect induced by PTH alone. Cyclic AMP accumulated in the incubation medium by stimulation by PTH was decreased by the simultaneous addition of PGE1. When the tissue was pre-incubated for 30 min with 2 to 10 μg/ml of PGE1, the magnitude of the increase of cyclic AMP caused by PTH subsequently added was lessened. However, the response to PTH of adenylate cyclase preparation obtained from the homogenate of PGE1-pre-treated tissue was not decreased. When first PTH was added to the incubating renal cortical tissue, the subsequent addition of PGE1 accelerated the decrease of cyclic AMP content in the tissue and decreased the amount of cyclic AMP released from the tissue. The interaction of PTH and PGE1 on cyclic AMP metabolism in the renal cortical tissue was in contrast to that seen in newborn rat calvaria where PGE1 and PTH acted additively in enhancing the level of cyclic AMP.


1993 ◽  
Vol 23 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Jef Pinxteren ◽  
Marlene Jimenez Del Rio ◽  
Carlos Velez Pardo ◽  
Guy Ebinger ◽  
Georges Vauquelin ◽  
...  

1988 ◽  
Vol 263 (25) ◽  
pp. 12744-12750
Author(s):  
H Murofushi ◽  
A Ikai ◽  
K Okuhara ◽  
S Kotani ◽  
H Aizawa ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document