Effects of a Novel Bradykinin B1 Receptor Antagonist and Angiotensin II Receptor Blockade on Experimental Myocardial Infarction in Rats
Overview
Affiliations
Background: The aim of the present study was to evaluate the cardiovascular effects of the novel bradykinin B1 receptor antagonist BI-113823 following myocardial infarction (MI) and to determine whether B1 receptor blockade alters the cardiovascular effects of an angiotensin II type 1 (AT1) receptor antagonist after MI in rats.
Methodology/principal Findings: Sprague Dawley rats were subjected to permanent occlusion of the left descending coronary artery. Cardiovascular function was determined at 7 days post MI. Treatment with either B1 receptor antagonist (BI-113823) or AT1 receptor antagonist (irbesartan) alone or in combination improved post-MI cardiac function as evidenced by attenuation of elevated left ventricular end diastolic pressure (LVEDP); greater first derivative of left ventricular pressure (± dp/dt max), left ventricle ejection fraction, fractional shorting, and better wall motion; as we as reductions in post-MI up-regulation of matrix metalloproteinases 2 (MMP-2) and collagen III. In addition, the cardiac up-regulation of B1 receptor and AT1 receptor mRNA were markedly reduced in animals treated with BI 113823, although bradykinin B2 receptor and angiotensin 1 converting enzyme (ACE1) mRNA expression were not significantly affected by B1 receptor blockade.
Conclusions/significance: The present study demonstrates that treatment with the novel B1 receptor antagonist, BI-113823 improves post-MI cardiac function and does not influence the cardiovascular effects of AT1 receptor antagonist following MI.
Kinins: Locally formed peptides during inflammation with potential use in tissue regeneration.
Martins L, Bader M, Bosco Pesquero J Inflamm Res. 2023; 72(10-11):1957-1963.
PMID: 37750921 DOI: 10.1007/s00011-023-01799-9.
Reversal of pulmonary arterial hypertension and neointimal formation by kinin B1 receptor blockade.
Rampa D, Murugesan P, Chao H, Feng H, Dai W, Lee D Respir Res. 2021; 22(1):281.
PMID: 34717626 PMC: 8557528. DOI: 10.1186/s12931-021-01875-w.
Snake venom-derived bradykinin-potentiating peptides: A promising therapy for COVID-19?.
Gouda A, Megarbane B Drug Dev Res. 2020; 82(1):38-48.
PMID: 32761647 PMC: 7436322. DOI: 10.1002/ddr.21732.
Methanol Extract of Leaves Attenuate Pain via the Modulation of Opioid/NO-Mediated Pathway.
Zakaria Z, Roosli R, Marmaya N, Omar M, Basir R, Somchit M Biomolecules. 2020; 10(2).
PMID: 32059475 PMC: 7072186. DOI: 10.3390/biom10020280.
Silva Jr J, Santana E, Manchini M, Antonio E, Bocalini D, Krieger J PLoS One. 2014; 9(3):e91017.
PMID: 24614810 PMC: 3948752. DOI: 10.1371/journal.pone.0091017.