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Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil
To explore the impact of omecamtiv mecarbil (OM) on the gene expression profile in adult male rats. Fourteen male Wistar rats were randomly assigned to a single OM (1.2 mg/kg/h; n = 6) or placebo (n = 8) 30-min infusion. Echocardiography was performed before and after OM infusion. Seven days after i...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858687/ https://www.ncbi.nlm.nih.gov/pubmed/36672863 http://dx.doi.org/10.3390/genes14010122 |
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author | El Oumeiri, Bachar Dewachter, Laurence Van de Borne, Philippe Hubesch, Géraldine Melot, Christian Jespers, Pascale Stefanidis, Constantin Mc Entee, Kathleen Vanden Eynden, Frédéric |
author_facet | El Oumeiri, Bachar Dewachter, Laurence Van de Borne, Philippe Hubesch, Géraldine Melot, Christian Jespers, Pascale Stefanidis, Constantin Mc Entee, Kathleen Vanden Eynden, Frédéric |
author_sort | El Oumeiri, Bachar |
collection | PubMed |
description | To explore the impact of omecamtiv mecarbil (OM) on the gene expression profile in adult male rats. Fourteen male Wistar rats were randomly assigned to a single OM (1.2 mg/kg/h; n = 6) or placebo (n = 8) 30-min infusion. Echocardiography was performed before and after OM infusion. Seven days after infusion, rats were euthanized, and left ventricular (LV) tissues were removed for real-time quantitative polymerase chain reaction (RTq-PCR) experiments. After OM infusion, pro-apoptotic Bax-to-Bcl2 ratio was decreased, with increased Bcl2 and similar Bax gene expression. The gene expression of molecules regulating oxidative stress, including glutathione disulfide reductase (Gsr) and superoxide dismutases (Sod1/Sod2), remained unchanged, whereas the expression of antioxidant glutathione peroxidase (Gpx) increased. While LV gene expression of key energy sensors, peroxisome proliferator activator (Ppar) α and γ, AMP-activated protein kinase (Ampk), and carnitine palmitoyltransferase 1 (Cpt1) remained unchanged after OM infusion, and the expression of pyruvate dehydrogenase kinase 4 (Pdk4) increased. The LV expression of the major myocardial glucose transporter Glut1 decreased, with no changes in Glut4 expression, whereas the LV expression of oxidized low-density lipoprotein receptor 1 (Olr1) and arachidonate 15-lipoxygenase (Alox15) increased, with no changes in fatty acid transporter Cd36. An increased LV expression of angiotensin II receptors AT1 and AT2 was observed, with no changes in angiotensin I-converting enzyme expression. The Kalikrein-bradykinin system was upregulated with increased LV expression of kallikrein-related peptidases Klk8, Klk1c2, and Klk1c12 and bradykinin receptors B1 and B2 (Bdkrb1 and Bdkrb2), whereas the LV expression of inducible nitric oxide synthase 2 (Nos2) increased. LV expression in major molecular determinants involved in calcium-dependent myocardial contraction remained unchanged, except for an increased LV expression of calcium/calmodulin-dependent protein kinase II delta (Cacna1c) in response to OM. A single intravenous infusion of OM, in adult healthy rats, resulted in significant changes in the LV expression of genes regulating apoptosis, oxidative stress, metabolism, and cardiac contractility. |
format | Online Article Text |
id | pubmed-9858687 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98586872023-01-21 Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil El Oumeiri, Bachar Dewachter, Laurence Van de Borne, Philippe Hubesch, Géraldine Melot, Christian Jespers, Pascale Stefanidis, Constantin Mc Entee, Kathleen Vanden Eynden, Frédéric Genes (Basel) Article To explore the impact of omecamtiv mecarbil (OM) on the gene expression profile in adult male rats. Fourteen male Wistar rats were randomly assigned to a single OM (1.2 mg/kg/h; n = 6) or placebo (n = 8) 30-min infusion. Echocardiography was performed before and after OM infusion. Seven days after infusion, rats were euthanized, and left ventricular (LV) tissues were removed for real-time quantitative polymerase chain reaction (RTq-PCR) experiments. After OM infusion, pro-apoptotic Bax-to-Bcl2 ratio was decreased, with increased Bcl2 and similar Bax gene expression. The gene expression of molecules regulating oxidative stress, including glutathione disulfide reductase (Gsr) and superoxide dismutases (Sod1/Sod2), remained unchanged, whereas the expression of antioxidant glutathione peroxidase (Gpx) increased. While LV gene expression of key energy sensors, peroxisome proliferator activator (Ppar) α and γ, AMP-activated protein kinase (Ampk), and carnitine palmitoyltransferase 1 (Cpt1) remained unchanged after OM infusion, and the expression of pyruvate dehydrogenase kinase 4 (Pdk4) increased. The LV expression of the major myocardial glucose transporter Glut1 decreased, with no changes in Glut4 expression, whereas the LV expression of oxidized low-density lipoprotein receptor 1 (Olr1) and arachidonate 15-lipoxygenase (Alox15) increased, with no changes in fatty acid transporter Cd36. An increased LV expression of angiotensin II receptors AT1 and AT2 was observed, with no changes in angiotensin I-converting enzyme expression. The Kalikrein-bradykinin system was upregulated with increased LV expression of kallikrein-related peptidases Klk8, Klk1c2, and Klk1c12 and bradykinin receptors B1 and B2 (Bdkrb1 and Bdkrb2), whereas the LV expression of inducible nitric oxide synthase 2 (Nos2) increased. LV expression in major molecular determinants involved in calcium-dependent myocardial contraction remained unchanged, except for an increased LV expression of calcium/calmodulin-dependent protein kinase II delta (Cacna1c) in response to OM. A single intravenous infusion of OM, in adult healthy rats, resulted in significant changes in the LV expression of genes regulating apoptosis, oxidative stress, metabolism, and cardiac contractility. MDPI 2023-01-01 /pmc/articles/PMC9858687/ /pubmed/36672863 http://dx.doi.org/10.3390/genes14010122 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article El Oumeiri, Bachar Dewachter, Laurence Van de Borne, Philippe Hubesch, Géraldine Melot, Christian Jespers, Pascale Stefanidis, Constantin Mc Entee, Kathleen Vanden Eynden, Frédéric Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title | Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title_full | Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title_fullStr | Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title_full_unstemmed | Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title_short | Altered Left Ventricular Rat Gene Expression Induced by the Myosin Activator Omecamtiv Mecarbil |
title_sort | altered left ventricular rat gene expression induced by the myosin activator omecamtiv mecarbil |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858687/ https://www.ncbi.nlm.nih.gov/pubmed/36672863 http://dx.doi.org/10.3390/genes14010122 |
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