Insurmountable angiotensin AT1 receptor antagonists: the role of tight antagonist binding.

Abstract

Angiotensin II increased the inositol phosphates production (EC50 = 3.4+/-0.7 nM) in Chinese hamster ovary (CHO) cells expressing the cloned human angiotensin AT1 receptor (CHO-AT1 cells). Coincubation with angiotensin AT1 receptor antagonists produced parallel rightward shifts of the concentration-response curve without affecting the maximal response. The… (More)

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