Abstract:
:We have demonstrated the existence of two distinct subtypes of the angiotensin II receptor in the rat adrenal gland using radioligand binding and tissue section autoradiography. The identification of the subtypes was made possible by the discovery of two structurally dissimilar, nonpeptide compounds, DuP 753 and EXP655, that show reciprocal selectivity for the two subtypes. In the rat adrenal cortex, DuP 753 inhibited 80% of the total AII binding with an IC50 value on the sensitive sites of 2 x 10(-8) M, while EXP655 displaced only 20%. In the rat adrenal medulla, EXP655 gave 90% inhibition of AII binding with an IC50 value of 3.0 x 10(-8) M, while DuP 753 was essentially inactive. The combination of the two compounds completely inhibited AII binding in both tissues.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Chiu AT,Herblin WF,McCall DE,Ardecky RJ,Carini DJ,Duncia JV,Pease LJ,Wong PC,Wexler RR,Johnson ALdoi
10.1016/0006-291x(89)91054-1subject
Has Abstract,Author List Incompletepub_date
1989-11-30 00:00:00pages
196-203issue
1eissn
0006-291Xissn
1090-2104pii
0006-291X(89)91054-1journal_volume
165pub_type
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