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Muslimova E, Rebrova T, Kondratieva D, Korepanov V, Sonduev E, Kozlov B, Afanasiev S. Expression of the β1-adrenergic receptor (ADRB1) gene in the myocardium and β-adrenergic reactivity of the body in patients with a history of myocardium infraction. Gene 2022; 844:146820. [PMID: 35987510 DOI: 10.1016/j.gene.2022.146820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/18/2022]
Abstract
β1-adrenergic receptors (β1-AR) directly affect on intracardiac hemodynamic and the ability of the heart to tolerate physical activity by regulating its inotropic and chronotropic functions. Severe hypersympathicotonia, specific to coronary artery disease (CAD) and chronic heart failure (HF), leads to impaired functioning of β1-AR. The aim of this research was to assess the expression level of the β1-AR ADRB1 gene in the myocardium, to evaluate the β-adrenergic reactivity of the membrane (β-ARM) of erythrocytes, and to analyze the association of these parameters with myocardial contractile dysfunction in patients with a myocardial infarction (MI) in the past and without it. The study included 126 patients with chronic CAD. Among the patients, 55.6 % had a history of MI at least 6 months ago. The expression of the ADRB1 gene was assessed using real-time polymerase chain reaction. With this purpose, we isolated RNA from the right atrial appendage, which was excised when a heart-lung machine was connected during a planned coronary bypass surgery. β-ARM was evaluated in 57 patients. This method is based on the fact of inhibition of hemolysis of erythrocytes, placed in a hyposmotic medium, in the presence of a β-blocker. Within the whole sample of patients, the expression of the ADRB1 gene is comparable in different functional classes of HF. There was no linear correlation between the expression of the ADRB1 gene and left ventricle ejection fraction (LVEF). In patients with a history of MI, the expression of the ADRB1 gene was elevated when compared to a group of patients without MI (p = 0.017). Patients with a history of MI had higher values of β-ARM than those without MI (p = 0.017). The reverse correlation between β-ARM and LVEF (r = -0,570, p = 0,002) was revealed in the group of patients without MI but not in the group of patients with a history of MI (r = -0,137, p = 0,479). In the sample of patients with chronic CAD, in the myocardium of subjects with a history of MI, the relative expression of ADRB1 gene was higher compared to the group of patients without MI. In patients with different functional classes (FC) of HF and with different ejection fraction, both with MI and without it, ADRB1 gene expression was comparable. In the group of patients with a history of MI, an increase in β-ARM was observed, i.e. decrease in the number or sensitivity of β-AR. Among patients without MI, an inverse correlation was found between β-ARM and LVEF.
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Affiliation(s)
- Elvira Muslimova
- Laboratory of Molecular and Cellular Pathology and Gene Diagnostics, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
| | - Tatiana Rebrova
- Laboratory of Molecular and Cellular Pathology and Gene Diagnostics, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Dina Kondratieva
- Laboratory of Molecular and Cellular Pathology and Gene Diagnostics, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Viacheslav Korepanov
- Laboratory of Molecular and Cellular Pathology and Gene Diagnostics, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Erdeni Sonduev
- Department of Cardiovascular Surgery, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Boris Kozlov
- Department of Cardiovascular Surgery, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Sergey Afanasiev
- Laboratory of Molecular and Cellular Pathology and Gene Diagnostics, Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
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Afanas'ev SA, Kondrat'eva DS, Muslimova EF, Budnikova ОV, Akhmedov SD, Kozlov BN. Expression of Genes and Proteins of the Sarcoplasmic Reticulum Са 2+-Transport Systems in Cardiomyocytes in Concomitant Coronary Heart Disease and Type 2 Diabetes Mellitus. Bull Exp Biol Med 2021; 172:117-120. [PMID: 34855078 DOI: 10.1007/s10517-021-05346-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Indexed: 11/28/2022]
Abstract
We compared the expression of Са2+-ATPase (SERCA2a), calsequestrin (CASQ2), ryanodine receptors (RyR2) proteins and their genes (ATP2A2, CASQ2, and RYR2) in coronary heart disease (CHD) patients with and without comorbid type 2 diabetes mellitus. All studies were performed on the right atrial appendages resected during coronary bypass surgeries. Expression of SERCA2a and RyR2 proteins and their ATP2A2 (p=0.046) and RYR2 genes in comorbid pathology was significantly (p=0.042) higher (by 1.2 and 2 times; p=0.025). The expression of CASQ2 protein and its gene did not differ significantly between the groups (p=0.82 and p=0.066, respectively). It was concluded that the expression of SERCA2a and RyR2 proteins and their genes (but not CASQ2 and its gene) is elevated in CHD associated with type 2 diabetes mellitus. Expression of the studied proteins correlated with the expression of their genes. Increased expression of CASQ2 protein and its gene can probably prevent imbalance of the Ca2+-transporting systems in cardiomyocytes and contractile dysfunction of the myocardium, even in CHD associated with type 2 diabetes mellitus.
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Affiliation(s)
- S A Afanas'ev
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia.
| | - D S Kondrat'eva
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - E F Muslimova
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - О V Budnikova
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - Sh D Akhmedov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - B N Kozlov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
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Muslimova EF, Rebrova TY, Kondratieva DS, Akhmedov SD, Afanasiev SA. Expression of the Ca2+-ATPase SERCA2a (ATP2A2) Gene and the Ryanodine Receptor (RYR2) Gene in Patients with Chronic Heart Failure. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795420070108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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