Hemodynamic Effects of Cyclic Guanosine Monophosphate-Dependent Signaling Through β3 Adrenoceptor Stimulation in Patients With Advanced Heart Failure: A Randomized Invasive Clinical Trial

Autor: Henning Bundgaard, Anna Axelsson Raja, Kasper Iversen, Nana Valeur, Niels Tønder, Morten Schou, Alex Hørby Christensen, Niels Eske Bruun, Helle Søholm, Muzhda Ghanizada, Natasha A.S. Fry, Elisha J. Hamilton, Søren Boesgaard, Mathias B. Møller, Emil Wolsk, Kasper Rossing, Lars Køber, Helge H. Rasmussen, Christoffer Rasmus Vissing
Rok vydání: 2022
Předmět:
Zdroj: Circulation: Heart Failure. 15
ISSN: 1941-3297
1941-3289
Popis: Background: β3-AR (β3-adrenergic receptor) stimulation improved systolic function in a sheep model of systolic heart failure (heart failure with reduced ejection fraction [HFrEF]). Exploratory findings in patients with New York Heart Association functional class II HFrEF treated with the β3-AR-agonist mirabegron supported this observation. Here, we measured the hemodynamic response to mirabegron in patients with severe HFrEF. Methods: In this randomized, double-blind, placebo-controlled trial we assigned patients with New York Heart Association functional class III–IV HFrEF, left ventricular ejection fraction Results: We randomized 22 patients (age 66±11 years, 18 men, 16, New York Heart Association functional class III), left ventricular ejection fraction 20±7%, median NT-proBNP 1953 ng/L. No significant changes were seen after 3 hours, but after 1 week, there was a significantly larger increase in cardiac index in the mirabegron group compared with the placebo group (mean difference, 0.41 [CI, 0.07–0.75] L/min/BSA; P =0.039). Pulmonary vascular resistance decreased significantly more in the mirabegron group compared with the placebo group (−1.6 [CI, −0.4 to −2.8] Wood units; P =0.02). No significant differences were seen during exercise. There were no differences in changes in heart rate, systemic vascular resistance, blood pressure, or renal function between groups. Mirabegron was well-tolerated. Conclusions: Oral treatment with the β3-AR-agonist mirabegron for 1 week increased cardiac index and decreased pulmonary vascular resistance in patients with moderate to severe HFrEF. Mirabegron may be useful in patients with worsening or terminal HF. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: 2016-002367-34.
Databáze: OpenAIRE
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