The effects of endothelin-A receptor blockade during the progression of pacing-induced congestive heart failure
Daniel Saad, MDa,
Rupak Mukherjee, PhDa,
Patrick B. Thomas, MDa,
Julie P. Iannini, BSa,
Charles G. Basler, BAa,
Latha Hebbar, MDa,
Seung-Jun O, MDa,
Suzanne Moreland, PhD*,
Maria L. Webb, PhD*,
James R. Powell, PhD* and
Francis G. Spinale, MD, PhDa
a Division of Cardiothoracic Surgery, Charleston, South Carolina, USA
* Bristol Myers Squibb Research Institute, Princeton, New Jersey, USA

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Figure 1 The percent change in mean arterial pressure following infusion of 10 µg of endothelin-1 (ET-1). Administration of 12.5 mg/kg b.i.d. of the ETA receptor antagonist BMS-193884 reduced the ET-1 pressor response by approximately 50%. Administration of the ETA receptor antagonist at 50 mg/kg b.i.d. virtually eliminated the ET-1 pressor response. These two doses of the ETA receptor antagonist were then used to study the effects of ETA receptor blockade with the development of pacing-induced CHF.
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