1
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Sazonova EN, Gusev IA, Filatova TS. Effects of Non-Opiate Analogue of Leu-Enkephalin on the Ion Currents, Number of Nucleoli, and p53 Expression in Isolated Cardiomyocytes of Albino Rats. Bull Exp Biol Med 2023; 175:544-548. [PMID: 37768450 DOI: 10.1007/s10517-023-05902-2] [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: 02/27/2023] [Indexed: 09/29/2023]
Abstract
Acute exposure of isolated ventricular cardiomyocytes to non-opiate analogue of leu-enkephalin (NALE peptide: Phe-D-Ala-Gly-Phe-Leu-Arg) in a concentration of 100 μg/liter and 6-h incubation in NALE solution did not significantly change ATP-dependent K+ current, L-type Ca2+ current, p53 protein expression, and number of nucleoli in the cardiomyocyte nuclei. Incubation of cardiomyocytes with NALE (100 μg/liter) in combination with NOP receptor blocker J-113397 (1 mg/liter) was followed by an increase in Ca2+ L-type current and the number of p53+ cells. The exposure of cardiomyocytes to NALE in a concentration 1000 μg/liter induced similar changes in the studied parameters (increase in Ca2+ L-type current and number of p53+ cardiomyocytes); an increase in the mean number of nucleoli was also observed. Our findings suggest that NALE peptide has direct effect on cardiomyocytes and NOP receptors are involved in this effect.
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Affiliation(s)
- E N Sazonova
- Far Eastern State Medical University, Ministry of Health of the Russian Federation, Khabarovsk, Russia
- Khabarovsk Branch of Far-Eastern Research Center of Physiology and Pathology of Breath, Research Institute of Maternity and Childhood Protection, Khabarovsk, Russia
| | - I A Gusev
- Far Eastern State Medical University, Ministry of Health of the Russian Federation, Khabarovsk, Russia.
| | - T S Filatova
- Department of Human and Animal Physiology, Faculty of Biology, M. V. Lomonosov Moscow State University, Moscow, Russia
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2
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Naryzhnaya NV, Derkachev IA, Kurbatov BK, Sirotina MA, Kilin M, Maslov LN. Decrease in Infarct-Limiting Effect of Chronic Normobaric Hypoxia in Rats with Induced Metabolic Syndrome Is Associated with Disturbances of Carbohydrate and Lipid Metabolism. Bull Exp Biol Med 2023; 174:723-727. [PMID: 37171712 DOI: 10.1007/s10517-023-05779-1] [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: 06/21/2022] [Indexed: 05/13/2023]
Abstract
We studied the infarct-limiting effect of adaptation to chronic normobaric hypoxia in rats with induced metabolic syndrome and the relationship between disturbances of adaptive cardioprotection and disorders of carbohydrate and lipid metabolism. Adaptation to chronic normobaric hypoxia was carried out for 21 days at 12% O2 and 0.3% CO2. The metabolic syndrome was modeled with a high-carbohydrate high-fat diet for 84 days with replacement of drinking water with a 20% fructose solution. The infarct size in rats exposed to chronic normobaric hypoxia was 38% smaller than in control animals. In rats with induced metabolic syndrome, hypertension, obesity, decreased glucose tolerance, increased serum triglyceride, and no infarction-limiting effect of chronic normobaric hypoxia were observed. Infarct size showed a direct correlation with impaired glucose tolerance and serum triglyceride levels. The study allows us to conclude that the lack of cardioprotection in chronic normobaric hypoxia in rats with induced metabolic syndrome is associated with impaired carbohydrate and lipid metabolism.
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Affiliation(s)
- N V Naryzhnaya
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
| | - I A Derkachev
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - B K Kurbatov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - M A Sirotina
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - M Kilin
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - L N Maslov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
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3
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Ulaganathan T, Perales S, Mani S, Baskhairoun BA, Rajasingh J. Pathological implications of cellular stress in cardiovascular diseases. Int J Biochem Cell Biol 2023; 158:106397. [PMID: 36931385 PMCID: PMC10124590 DOI: 10.1016/j.biocel.2023.106397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
Cellular stress has been a key factor in the development of cardiovascular diseases. Major types of cellular stress such as mitochondrial stress, endoplasmic reticulum stress, hypoxia, and replicative stress have been implicated in clinical complications of cardiac patients. The heart is the central regulator of the body by supplying oxygenated blood throughout the system. Impairment of cellular function could lead to heart failure, myocardial infarction, ischemia, and even stroke. Understanding the effect of these distinct types of cellular stress on cardiac function is crucial for the scientific community to understand and develop novel therapeutic approaches. This review will comprehensively explain the different mechanisms of cellular stress and the most recent findings related to stress-induced cardiac dysfunction.
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Affiliation(s)
- Thennavan Ulaganathan
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA; Department of Biotechnology, SRM Institute of Science and Technology, kattankulathur, Tamilnadu, 603203, India
| | - Selene Perales
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Saiprahalad Mani
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA; Department of Biotechnology, SRM Institute of Science and Technology, kattankulathur, Tamilnadu, 603203, India
| | - Boula A Baskhairoun
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Johnson Rajasingh
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA; Department of Medicine-Cardiology, University of Tennessee Health Science Center, Memphis, TN, USA; Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, USA.
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4
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Popov SV, Mukhomedzyanov AV, Maslov LN, Naryzhnaya NV, Kurbatov BK, Prasad NR, Singh N, Fu F, Azev VN. The Infarct-Reducing Effect of the δ 2 Opioid Receptor Agonist Deltorphin II: The Molecular Mechanism. MEMBRANES 2023; 13:63. [PMID: 36676870 PMCID: PMC9862914 DOI: 10.3390/membranes13010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/28/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
The search for novel drugs for the treatment of acute myocardial infarction and reperfusion injury of the heart is an urgent aim of modern pharmacology. Opioid peptides could be such potential drugs in this area. However, the molecular mechanism of the infarct-limiting effect of opioids in reperfusion remains unexplored. The objective of this research was to study the signaling mechanisms of the cardioprotective effect of deltorphin II in reperfusion. Rats were subjected to coronary artery occlusion (45 min) and reperfusion (2 h). The ratio of infarct size/area at risk was determined. This study indicated that the cardioprotective effect of deltorphin II in reperfusion is mediated via the activation of peripheral δ2 opioid receptor (OR), which is most likely localized in cardiomyocytes. We studied the role of guanylyl cyclase, protein kinase Cδ (PKCδ), phosphatidylinositol-3-kinase (PI3-kinase), extracellular signal-regulated kinase-1/2 (ERK1/2-kinase), ATP-sensitive K+-channels (KATP channels), mitochondrial permeability transition pore (MPTP), NO synthase (NOS), protein kinase A (PKA), Janus 2 kinase, AMP-activated protein kinase (AMPK), the large conductance calcium-activated potassium channel (BKCa-channel), reactive oxygen species (ROS) in the cardioprotective effect of deltorphin II. The infarct-reducing effect of deltorphin II appeared to be mediated via the activation of PKCδ, PI3-kinase, ERK1/2-kinase, sarcolemmal KATP channel opening, and MPTP closing.
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Affiliation(s)
- Sergey V. Popov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634012 Tomsk, Russia
| | - Alexandr V. Mukhomedzyanov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634012 Tomsk, Russia
| | - Leonid N. Maslov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634012 Tomsk, Russia
| | - Natalia V. Naryzhnaya
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634012 Tomsk, Russia
| | - Boris K. Kurbatov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634012 Tomsk, Russia
| | - N. Rajendra Prasad
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Chidambaram 608002, India
| | - Nirmal Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, India
| | - Feng Fu
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi’an 710032, China
| | - Viacheslav N. Azev
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Pushchino, Russia
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5
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Naryzhnaya NV, Sementsov AS, Maslov LN, Derkachev IA. The Role of NO Synthase in the Infarct-Limiting Effect of Urgent and Chronic Adaptation to Normobaric Hypoxia. Bull Exp Biol Med 2023; 174:304-307. [PMID: 36723734 DOI: 10.1007/s10517-023-05696-3] [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: 05/26/2022] [Indexed: 02/02/2023]
Abstract
We studied the role of NO synthase in the infarct-limiting effect of short-term (SNH) and chronic continuous normobaric hypoxia (CNH). In male Wistar rats, SNH (6 sessions of 10-min hypoxia 8% O2 and 10-min reoxygenation) or CNH (12% O2 for 21 days) was modeled. In 30 min after SNH or 24 h after CNH, the rats were subjected to coronary artery occlusion (45 min) and reperfusion (2 h). The following drugs were administered to rats: non-selective NO synthase inhibitor L-NAME (10 mg/kg), inhibitor of inducible NO synthase S-methylthiourea (3 mg/kg), and inhibitor of neuronal NO-synthase 7-nitroindazole (50 mg/kg). NO donor diethylenetriamine was administered intravenously in a dose 2 mg/kg. It was found that L-NAME and S-methylthiourea abolished the infarct-limiting effect of SNH and CNH. Diethylenetriamine increased cardiac tolerance to ischemia/reperfusion. It is believed that inducible NO synthase plays an important role in the cardioprotective effect of normobaric hypoxia.
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Affiliation(s)
- N V Naryzhnaya
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
| | - A S Sementsov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - L N Maslov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - I A Derkachev
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
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6
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Maslov LN, Sementsov AS, Naryzhnaya NV, Derkachev IA, Fu F, Gusakova SV, Sarybaev A. The Role of Mitochondrial K ATP Channels in the Infarct-Reducing Effect of Normobaric Hypoxia. Bull Exp Biol Med 2022; 174:190-193. [PMID: 36602604 DOI: 10.1007/s10517-023-05671-y] [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: 05/16/2022] [Indexed: 01/06/2023]
Abstract
We studied the role of KATP channels in the infarct-limiting effect of short-term normobaric hypoxia. Male Wistar rats were subjected to a 45-min coronary artery occlusion followed by a 120-min reperfusion. Normobaric hypoxia was simulated 30 min before coronary artery occlusion: 6 sessions of hypoxia (8% O2, 10 min) and reoxygenation (21% O2, 10 min). The following drugs were administered to rats: glibenclamide, 5-hydroxydecanoate, and HMR1098. It was found that normobaric hypoxia contributes to a decrease in myocardial infarct size by 36%. Preliminary administration of glibenclamide or 5-hydroxydecanoate eliminated the infarct-reducing effect of normobaric hypoxia. Activator of mitochondrial KATP channel diazoxide limited the infarct size. These findings suggest that mitochondrial KATP channels are involved into the cardioprotective effect of normobaric hypoxia.
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Affiliation(s)
- L N Maslov
- Research Institute of Cardiology, Tomsk National Research Medical Center, Tomsk, Russia
| | - A S Sementsov
- Research Institute of Cardiology, Tomsk National Research Medical Center, Tomsk, Russia
| | - N V Naryzhnaya
- Research Institute of Cardiology, Tomsk National Research Medical Center, Tomsk, Russia
| | - I A Derkachev
- Research Institute of Cardiology, Tomsk National Research Medical Center, Tomsk, Russia.
| | - F Fu
- Fourth Military Medical University, Xi'an, China
| | - S V Gusakova
- Research Institute of Cardiology, Tomsk National Research Medical Center, Tomsk, Russia
| | - A Sarybaev
- Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
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7
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Maslov LN, Naryzhnaya NV, Sementsov AS, Derkachev IA, Gusakova SV, Sarybaev A. Role of Nitric Oxide Synthase in the Infarct-Limiting Effect of Normobaric Hypoxia. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022040202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Naryzhnaya NV, Maslov LN, Derkachev IA, Ma H, Zhang Y, Prasad NR, Singh N, Fu F, Pei JM, Sarybaev A, Sydykov A. The effect of adaptation to hypoxia on cardiac tolerance to ischemia/reperfusion. J Biomed Res 2022:1-25. [PMID: 37183617 PMCID: PMC10387748 DOI: 10.7555/jbr.36.20220125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The acute myocardial infarction (AMI) and sudden cardiac death (SCD), both associated with acute cardiac ischemia, are one of the leading causes of adult death in economically developed countries. The development of new approaches for the treatment and prevention of AMI and SCD remains the highest priority for medicine. A study on the cardiovascular effects of chronic hypoxia (CH) may contribute to the development of these methods. Chronic hypoxia exerts both positive and adverse effects. The positive effects are the infarct-reducing, vasoprotective, and antiarrhythmic effects, which can lead to the improvement of cardiac contractility in reperfusion. The adverse effects are pulmonary hypertension and right ventricular hypertrophy. This review presents a comprehensive overview of how CH enhances cardiac tolerance to ischemia/reperfusion. It is an in-depth analysis of the published data on the underlying mechanisms, which can lead to future development of the cardioprotective effect of CH. A better understanding of the CH-activated protective signaling pathways may contribute to new therapeutic approaches in an increase of cardiac tolerance to ischemia/reperfusion.
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9
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Maslov LN, Mukhomedzyanov AV, Tsibulnikov SY, Suleiman MS, Khaliulin I, Oeltgen PR. Activation of peripheral δ 2-opioid receptor prevents reperfusion heart injury. Eur J Pharmacol 2021; 907:174302. [PMID: 34217713 DOI: 10.1016/j.ejphar.2021.174302] [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: 04/04/2021] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 11/20/2022]
Abstract
Coronary artery occlusion (45 min) and reperfusion (2 h) was performed in rats anesthetized with α-chloralose. Opioid receptor agonists were administered intravenously 5 min before reperfusion, while opioid receptor antagonists were administered 10 min before reperfusion. The non-selective opioid δ-receptor agonist DADLE at a dose of 0.088 mg/kg had no effect the infarct size/area at risk ratio. The selective opioid δ-receptor agonist BW373 was administered at a dose of 1 mg/kg. This opioid at a dose of 1 mg/kg reduced infarct size. The selective opioid δ1-receptor agonist DPDPE at a dose of 0.1 mg/kg and 0.969 mg/kg did not affect infarct size. The selective opioid δ2-receptor agonist deltorphin II at a dose of 0.12 mg/kg reduced infarct size by one half. The opioid δ-receptor agonist p-Cl-Phe-DPDPE was administered at a dose of 0.105 mg/kg and 1.02 mg/kg. This opioid at a dose of 1.02 mg/kg reduced infarct size. The universal opioid receptor antagonists, naltrexone and naloxone methiodide acting on peripheral opioid receptor, as well as the selective opioid δ-receptor antagonist TIIP[ψ], the selective opioid δ2-receptor antagonist naltriben eliminated the infarct limiting effect of deltorphin II. The selective opioid κ receptor antagonist nor-binaltorphimine, the selective opioid μ receptor antagonist CTAP, and the selective opioid δ1-receptor antagonist BNTX did not abolish the protective effect of deltorphin II. Deltorphin II exhibited the most pronounced cardioprotective effect during reperfusion. These studies clearly indicate that the activation of opioid δ2-receptor located in cardiomyocytes increases the resistance of the heart to reperfusion injury.
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Affiliation(s)
- Leonid N Maslov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Kyevskaya 111A, 634012 Tomsk, Russia.
| | - Alexander V Mukhomedzyanov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Kyevskaya 111A, 634012 Tomsk, Russia
| | - Sergey Y Tsibulnikov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Kyevskaya 111A, 634012 Tomsk, Russia
| | - M-Saadeh Suleiman
- Bristol Medical School, University of Bristol, Level 7, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Igor Khaliulin
- Bristol Medical School, University of Bristol, Level 7, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
| | - Peter R Oeltgen
- Department of Pathology, University of Kentucky College of Medicine, Lexington, KY, USA
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10
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Popov SV, Mukhomedzyanov AV, Tsibulnikov SY, Khaliuli I, Oeltgen PR, Prasad NR, Maslov LN. Activation of Peripheral Opioid Kappa1 Receptor Prevents Cardiac Reperfusion Injury. Physiol Res 2021; 70:523-531. [PMID: 34062075 PMCID: PMC8820547 DOI: 10.33549/physiolres.934646] [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: 01/19/2021] [Accepted: 04/13/2021] [Indexed: 11/25/2022] Open
Abstract
The role of opioid kappa1 and kappa2 receptors in reperfusion cardiac injury was studied. Male Wistar rats were subjected to a 45-min coronary artery occlusion followed by a 120-min reperfusion. Opioid kappa receptor agonists were administered intravenously 5 min before the onset of reperfusion, while opioid receptor antagonists were given 10 min before reperfusion. The average value of the infarct size/area at risk (IS/AAR) ratio was 43 - 48% in untreated rats. Administration of the opioid kappa1 receptor agonist (-)-U-50,488 (1 mg/kg) limited the IS/AAR ratio by 42%. Administration of the opioid kappa receptor agonist ICI 199,441 (0.1 mg/kg) limited the IS/AAR ratio by 41%. The non-selective opioid kappa receptor agonist (+)-U-50,488 (1 mg/kg) with low affinity for opioid kappa receptor, the peripherally acting opioid kappa2 receptor agonist ICI 204,448 (4 mg/kg) and the selective opioid ?2 receptor agonist GR89696 (0.1 mg/kg) had no effect on the IS/AAR ratio. Pretreatment with naltrexone, the peripherally acting opioid receptor antagonist naloxone methiodide, or the selective opioid kappa2 receptor antagonist nor-binaltorphimine completely abolished the infarct-reducing effect of (-)-U-50,488 and ICI 199,441. Pretreatment with the selective opioid ? receptor antagonist TIPP[psi] and the selective opioid µ receptor antagonist CTAP did not alter the infarct reducing effect of (-)-U-50,488 and ICI 199,441. Our study is the first to demonstrate the following: (a) the activation of opioid kappa2 receptor has no effect on cardiac tolerance to reperfusion; (b) peripheral opioid kappa1 receptor stimulation prevents reperfusion cardiac injury; (c) ICI 199,441 administration resulted in an infarct-reducing effect at reperfusion; (e) bradycardia induced by opioid kappa receptor antagonists is not dependent on the occupancy of opioid kappa receptor.
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MESH Headings
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/administration & dosage
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/toxicity
- Administration, Intravenous
- Analgesics, Opioid/administration & dosage
- Analgesics, Opioid/toxicity
- Animals
- Arrhythmias, Cardiac/chemically induced
- Arrhythmias, Cardiac/physiopathology
- Disease Models, Animal
- Heart Rate/drug effects
- Male
- Myocardial Infarction/metabolism
- Myocardial Infarction/pathology
- Myocardial Infarction/prevention & control
- Myocardial Reperfusion Injury/metabolism
- Myocardial Reperfusion Injury/pathology
- Myocardial Reperfusion Injury/prevention & control
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Narcotic Antagonists/administration & dosage
- Piperazines/administration & dosage
- Pyrrolidines/administration & dosage
- Pyrrolidines/toxicity
- Rats, Wistar
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/metabolism
- Signal Transduction
- Rats
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Affiliation(s)
- S V Popov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Center, the Russian Academy of Sciences, Tomsk, Russia.
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11
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Popov SV, Prokudina ES, Mukhomedzyanov AV, Naryzhnaya NV, Ma H, Zurmanova JM, der Ven PFMV, Maslov LN. Cardioprotective and Vasoprotective Effects of Corticotropin-Releasing Hormone and Urocortins: Receptors and Signaling. J Cardiovasc Pharmacol Ther 2021; 26:575-584. [PMID: 34351805 DOI: 10.1177/1074248420985301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Despite the recent progress in research and therapy, cardiovascular diseases are still the most common cause of death worldwide, thus new approaches are still needed. The aim of this review is to highlight the cardioprotective potential of urocortins and corticotropin-releasing hormone (CRH) and their signaling. It has been documented that urocortins and CRH reduce ischemic and reperfusion (I/R) injury, prevent reperfusion ventricular tachycardia and fibrillation, and improve cardiac contractility during reperfusion. Urocortin-induced increase in cardiac tolerance to I/R depends mainly on the activation of corticotropin-releasing hormone receptor-2 (CRHR2) and its downstream pathways including tyrosine kinase Src, protein kinase A and C (PKA, PKCε) and extracellular signal-regulated kinase (ERK1/2). It was discussed the possibility of the involvement of interleukin-6, Janus kinase-2 and signal transducer and activator of transcription 3 (STAT3) and microRNAs in the cardioprotective effect of urocortins. Additionally, phospholipase-A2 inhibition, mitochondrial permeability transition pore (MPT-pore) blockade and suppression of apoptosis are involved in urocortin-elicited cardioprotection. Chronic administration of urocortin-2 prevents the development of postinfarction cardiac remodeling. Urocortin possesses vasoprotective and vasodilator effect; the former is mediated by PKC activation and prevents an impairment of endothelium-dependent coronary vasodilation after I/R in the isolated heart, while the latter includes both cAMP and cGMP signaling and its downstream targets. As CRHR2 is expressed by both cardiomyocytes and vascular endothelial cells. Urocortins mediate both endothelium-dependent and -independent relaxation of coronary arteries.
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Affiliation(s)
- Sergey V Popov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Ekaterina S Prokudina
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Alexander V Mukhomedzyanov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Natalia V Naryzhnaya
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Huijie Ma
- Department of Physiology, 12553Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Jitka M Zurmanova
- Department of Physiology, Faculty of Science, 37740Charles University, Prague, Czech Republic
| | - Peter F M van der Ven
- Department of Molecular Cell Biology, Institute for Cell Biology, 9374University of Bonn, Bonn, Germany
| | - Leonid N Maslov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
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12
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Popov SV, Maslov LN, Naryzhnaya NV, Mukhomezyanov AV, Krylatov AV, Tsibulnikov SY, Ryabov VV, Cohen MV, Downey JM. The Role of Pyroptosis in Ischemic and Reperfusion Injury of the Heart. J Cardiovasc Pharmacol Ther 2021; 26:562-574. [PMID: 34264787 DOI: 10.1177/10742484211027405] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
While ischemia itself can kill heart muscle, much of the infarction after a transient period of coronary artery occlusion has been found to result from injury during reperfusion. Here we review the role of inflammation and possible pyroptosis in myocardial reperfusion injury. Current evidence suggests pyroptosis's contribution to infarction may be considerable. Pyroptosis occurs when inflammasomes activate caspases that in turn cleave off an N-terminal fragment of gasdermin D. This active fragment makes large pores in the cell membrane thus killing the cell. Inhibition of inflammation enhances cardiac tolerance to ischemia and reperfusion injury. Stimulation of the purinergic P2X7 receptor and the β-adrenergic receptor and activation of nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) by toll-like receptor (TLR) agonists are all known to contribute to ischemia/reperfusion (I/R) cardiac injury through inflammation, potentially by pyroptosis. In contrast, stimulation of the cannabinoid CB2 receptor reduces I/R cardiac injury and inhibits this pathway. MicroRNAs, Akt, the phosphate and tension homology deleted on chromosome 10 protein (PTEN), pyruvate dehydrogenase and sirtuin-1 reportedly modulate inflammation in cardiomyocytes during I/R. Cryopyrin and caspase-1/4 inhibitors are reported to increase cardiac tolerance to ischemic and reperfusion cardiac injury, presumably by suppressing inflammasome-dependent inflammation. The ambiguity surrounding the role of pyroptosis in reperfusion injury arises because caspase-1 also activates cytotoxic interleukins and proteolytically degrades a surprisingly large number of cytosolic enzymes in addition to activating gasdermin D.
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Affiliation(s)
- Sergey V Popov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Leonid N Maslov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Natalia V Naryzhnaya
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Alexandr V Mukhomezyanov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Andrey V Krylatov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Sergey Y Tsibulnikov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Vyacheslav V Ryabov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Michael V Cohen
- Department of Physiology and Cell Biology, 12214University of South Alabama College of Medicine, Mobile, AL, USA
| | - James M Downey
- Department of Physiology and Cell Biology, 12214University of South Alabama College of Medicine, Mobile, AL, USA
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13
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Naryzhnaya NV, Prokudina ES, Skryabina AS. Intracellular Kinase Mechanism of the Cytoprotective Action of Adaptation to Chronic Hypoxia in Anoxia/Reoxygenation of Cardiomyocytes. Bull Exp Biol Med 2020; 169:441-444. [PMID: 32889568 DOI: 10.1007/s10517-020-04905-7] [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: 05/28/2019] [Indexed: 10/23/2022]
Abstract
On the model of anoxia/reoxygenation of isolated cardiomyocytes, we studied the role of kinases in the implementation of the cytoprotective effect of chronic continuous normobaric hypoxia (21 days on continuous exposure of rats at 12% O2). Anoxia/reoxygenation of cardiomyocytes from intact rats caused death of 16.5% cells, which was accompanied by the release of lactate dehydrogenase; in suspension of cardiomyocytes from adapted rats, only 6.8% cells died and the release of lactate dehydrogenase was lower by 60%. Incubation of cells with inhibitors of protein kinase C (chelerythrin, 10 mM), protein kinase Cδ (rottlerin, 1 μM), tyrosine kinases (genistein, 50 μM), but not with PI3K inhibitor (wortmannin, 100 nM) eliminated the cytoprotective effect of chronic continuous normobaric hypoxia. Thus, the cytoprotective effect of chronic normobaric hypoxia is realized through activation of protein kinase Cδ and tyrosine kinases, but not through PI3K.
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Affiliation(s)
- N V Naryzhnaya
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
| | - E S Prokudina
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - A S Skryabina
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
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14
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Tuo Y, Tian C, Lu L, Xiang M. The paradoxical role of methionine enkephalin in tumor responses. Eur J Pharmacol 2020; 882:173253. [PMID: 32535097 DOI: 10.1016/j.ejphar.2020.173253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 05/20/2020] [Accepted: 06/05/2020] [Indexed: 10/24/2022]
Abstract
Methionine enkephalin (MENK) is an opioid peptide composed of five amino acids with multiple biological activities. Since its discovery, MENK has become prominent in neuroregulation and immunoregulation. Tumors have increasingly been a spotlight because of their terrible trends and refractory characteristic. The therapeutic potential of MENK was investigated on a large scale, and there are numerous evidences that MENK exerts anti-tumor effects via two mechanisms. The first mechanism explains the enhanced anti-tumor immune effects of MENK. The second mechanism shows that MENK directly inhibits tumor cell proliferation. However, numerous reports have clarified the pro-tumor role of MENK by inhibiting T and B cell proliferation, promoting tumor cell growth by binding to opioid receptors, leading to desensitization of lymphocytes, and inducing tolerance. It is particularly intriguing that dual reactions are triggered when MENK combines with its opioid receptors; thus, anti-tumor response of the whole body is influenced. This review will expound the dual roles of MENK in tumor responses based on immune cells, cytokines, and tumor cells to provide better suggestions for its application in tumor treatment.
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Affiliation(s)
- Yali Tuo
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Cheng Tian
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Lili Lu
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ming Xiang
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Brackley AD, Andrade MA, Toney GM. Intermittent hypercapnic hypoxia induces respiratory hypersensitivity to fentanyl accompanied by tonic respiratory depression by endogenous opioids. J Physiol 2020; 598:3239-3257. [PMID: 32415789 PMCID: PMC8162062 DOI: 10.1113/jp280021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 05/07/2020] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS Sleep apnoea increases susceptibility to opioid-induced respiratory depression (OIRD). Endogenous opioids are implicated as a contributing factor in sleep apnoea. Rats exposed to sleep-phase chronic intermittent hypercapnic hypoxia (CIHH) for 7 days exhibited exaggerated OIRD to systemic fentanyl both while anaesthetized and artificially ventilated and while conscious and breathing spontaneously, implicating heightened CNS inhibitory efficacy of fentanyl. CIHH also induced tonic endogenous opioid suppression of neural inspiration. Sleep-related episodes of hypercapnic hypoxia, as in sleep apnoea, promote hypersensitivity to OIRD, with tonic respiratory depression by endogenous opioids implicated as a potential underlying cause. ABSTRACT Sleep apnoea (SA) increases opioid-induced respiratory depression (OIRD) and lethality. To test the hypothesis that this results from chronic intermittent bouts of hypercapnic hypoxia (CIHH) accompanying SA, we compared OIRD across continuously normoxic control rats and rats exposed to sleep-phase (8 h/day) CIHH for 1 week. OIRD sensitivity was first assessed in anaesthetized (urethane/α-chloralose), vagotomized and artificially ventilated rats by recording phrenic nerve activity (PNA) to index neural inspiration and quantify PNA burst inhibition to graded doses (0, 2, 20, 50 μg kg-1 , i.v.) of the synthetic opioid fentanyl. Fentanyl dose-dependently reduced PNA burst frequency (P = 0.0098-0.0001), while increasing the duration of burst quiescence at 50 μg kg-1 (P < 0.0001, n = 5-6/group/dose). CIHH shifted the fentanyl dose-phrenic burst frequency response curve to the left (P = 0.0163) and increased the duration of burst quiescence (P < 0.0001). During fentanyl recovery, PNA burst width was increased relative to baseline in normoxic and CIHH rats. Systemic naloxone (1 mg kg-1 , i.v.) reversed fentanyl-induced PNA arrest in both groups (P = 0.0002), and increased phrenic burst amplitude above baseline (P = 0.0113) in CIHH rats only. Differential sensitivity to anaesthesia as a cause of CIHH-related OIRD hypersensitivity was excluded by observing in conscious spontaneously breathing rats that fentanyl at 20 μg kg-1 (i.v.), which silenced PNA in anaesthetized rats, differentially increased breathing variability in normoxic versus CIHH rats (P = 0.0427), while significantly reducing breathing frequency (P < 0.0001) and periodicity (P = 0.0003) in CIHH rats only. Findings indicate that CIHH increased OIRD sensitivity, with tonic inspiratory depression by endogenous opioids as a likely contributing cause.
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Affiliation(s)
- Allison D Brackley
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229
- Center for Biomedical Neuroscience, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229
| | - Mary Ann Andrade
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229
| | - Glenn M Toney
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229
- Center for Biomedical Neuroscience, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229
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16
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Cataldi M, Cignarelli A, Giallauria F, Muscogiuri G, Barrea L, Savastano S, Colao A. Cardiovascular effects of antiobesity drugs: are the new medicines all the same? INTERNATIONAL JOURNAL OF OBESITY SUPPLEMENTS 2020; 10:14-26. [PMID: 32714509 DOI: 10.1038/s41367-020-0015-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Waiting for a definite answer from well-designed randomized prospective clinical trials, the impact of the new antiobesity drugs -liraglutide, bupropion/naltrexone, phentermine/topiramate and lorcaserin- on cardiovascular outcomes remains uncertain. What has been learned from previous experience with older medicines is that antiobesity drugs may influence cardiovascular health not only causing weight reduction but also through direct actions on the cardiovascular system. Therefore, in the present review, we examine what is known, mainly from preclinical investigations, about the cardiovascular pharmacology of the new antiobesity medicines with the aim of highlighting potential mechanistic differences. We will show that the two active substances of the bupropion/naltrexone combination both exert beneficial and unwanted cardiovascular effects. Indeed, bupropion exerts anti-inflammatory effects but at the same time it does increase heart rate and blood pressure by potentiating catecholaminergic neurotransmission, whereas naltrexone reduces TLR4-dependent inflammation and has potential protective effects in stroke but also impairs cardiac adaption to ischemia and the beneficial opioid protective effects mediated in the endothelium. On the contrary, with the only exception of a small increase in heat rate, liraglutide only exerts favorable cardiovascular effects by protecting myocardium and brain from ischemic damage, improving heart contractility, lowering blood pressure and reducing atherogenesis. As far as the phentermine/topiramate combination is concerned, no direct cardiovascular beneficial effect is expected for phentermine (as this drug is an amphetamine derivative), whereas topiramate may exert cardioprotective and neuroprotective effects in ischemia and anti-inflammatory and antiatherogenic actions. Finally, lorcaserin, a selective 5HT2C receptor agonist, does not seem to exert significant direct effects on the cardiovascular system though at very high concentrations this drug may also interact with other serotonin receptor subtypes and exert unwanted cardiovascular effects. In conclusion, the final effect of the new antiobesity drugs on cardiovascular outcomes will be a balance between possible (but still unproved) beneficial effects of weight loss and "mixed" weight-independent drug-specific effects. Therefore comparative studies will be required to establish which one of the new medicines is more appropriate in patients with specific cardiovascular diseases.
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Affiliation(s)
- Mauro Cataldi
- Department of Neuroscience, Reproductive Sciences and Dentistry, Division of Pharmacology, Federico II University of Naples, Naples, Italy
| | - Angelo Cignarelli
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Giallauria
- Department of Translational Medical Sciences, Internal Medicine (Metabolic and Cardiac Rehabilitation Unit), Federico II University of Naples, Naples, Italy
| | - Giovanna Muscogiuri
- Department of Clinical Medicine and Surgery, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Luigi Barrea
- Department of Clinical Medicine and Surgery, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Silvia Savastano
- Department of Clinical Medicine and Surgery, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Annamaria Colao
- Department of Clinical Medicine and Surgery, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
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Prokudina ES, Naryzhnaya NV, Nesterov EA, Tsibulnikov SY, Maslov LN. Continuous Normobaric Hypoxia Improved Cardiac Bioenergetics after Ischemia/Reperfusion: Role of Opioid Receptors. Bull Exp Biol Med 2020; 169:13-17. [PMID: 32474669 DOI: 10.1007/s10517-020-04814-9] [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: 05/28/2019] [Indexed: 11/27/2022]
Abstract
We analyzed the role of opioid receptors in the conditioning effect of continuous normobaric hypoxia on bioenergetics of the heart subjected to ischemia/reperfusion injury. Male Wistar rats were adapted to a 21-day continuous normobaric hypoxia (12% pO2). Then, the hearts were isolated and subjected to 45-min total ischemia followed by 30-min reperfusion. Damage to the myocardium was assessed by activity of creatine phosphokinase in the perfusate. Experiments on isolated mitochondria showed that ischemia/reperfusion injury decreased the respiration rate in state 3 (V3), the ratio of added ADP and oxygen consumption in respiration state 3 (ADP/O ratio), the mitochondrial potential across the inner membrane (Δψ), and Ca2+ binding capacity of mitochondria. In addition, ischemia/reperfusion injury decreased myocardial ATP. Preventive continuous normobaric hypoxia pronouncedly moderated these adverse effects of reperfusion. It was found that its protective effects were related to activation of cardiac μ- and δ2-opioid receptors.
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Affiliation(s)
- E S Prokudina
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - N V Naryzhnaya
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - E A Nesterov
- National Research Tomsk Polytechnic University, Tomsk, Russia
| | - S Yu Tsibulnikov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - L N Maslov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia.
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18
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Naryzhnaya NV, Prokudina ES, Nesterov EA, Tsibulnikov SY, Maslov LN. The Role of Cardiac Opioid Receptors in the Cardioprotective Effect of Continuous Normobaric Hypoxia. Bull Exp Biol Med 2020; 168:727-729. [PMID: 32337663 DOI: 10.1007/s10517-020-04789-7] [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: 05/16/2019] [Indexed: 10/24/2022]
Abstract
We studied the role of opioid receptor subtypes in improvement of the functional state of the heart during reperfusion after adaptation to continuous normobaric hypoxia. To this end, male Wistar rats were subjected to continuous normobaric hypoxia (12% O2). Then, the hearts were isolated and exposed to total 45-min ischemia followed by 30-min reperfusion. Opioid receptor antagonists were added to the perfusion solution prior to ischemia. It was found that continuous normobaric hypoxia reduced the release of creatine phosphokinase into the effluent, increased myocardial contractile force, and decreased the end-diastolic pressure during reperfusion; these positive effects were related to activation of cardiac δ2- and μ-opioid receptors.
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Affiliation(s)
- N V Naryzhnaya
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - E S Prokudina
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - E A Nesterov
- National Research Tomsk Polytechnic University, Tomsk, Russia
| | - S Yu Tsibulnikov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - L N Maslov
- Cardiology Research Institute, Tomsk National Research Medical Center, Tomsk, Russia.
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19
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Prokudina E, Naryzhnaya N, Mukhomedzyanov A, Gorbunov A, Zhang Y, Jaggi A, Tsibulnikov S, Nesterov E, Lishmanov Y, Suleiman M, Oeltgen P, Maslov L. Effect of Chronic Continuous Normobaric Hypoxia on Functional State of Cardiac Mitochondria and Tolerance of Isolated Rat Heart to Ischemia and Reperfusion: Role of µ and δ2 Opioid Receptors. Physiol Res 2019; 68:909-920. [DOI: 10.33549/physiolres.933945] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chronic continuous normobaric hypoxia (CNH) increases cardiac tolerance to ischemia/reperfusion injury in vivo and this effect is mediated via µ and δ2 opioid receptors (ORs) activation. CNH has also been shown to be cardioprotective in isolated rat heart. In this study, we hypothesize that this cardioprotective effect of CNH is mediated by activation of µ and δ2 ORs and preservation of mitochondrial function. Hearts from rats adapted to CNH (12 % oxygen) for 3 weeks were extracted, perfused in the Langendorff mode and subjected to 45 min of global ischemia and 30 min of reperfusion. Intervention groups were pretreated for 10 min with antagonists for different OR types: naloxone (300 nmol/l), the selective δ OR antagonist TIPP(ψ) (30 nmol/l), the selective δ1 OR antagonist BNTX (1 nmol/l), the selective δ2 OR antagonist naltriben (1 nmol/l), the selective peptide μ OR antagonist CTAP (100 nmol/l) and the selective κ OR antagonist nor-binaltorphimine (3 nmol/l). Creatine kinase activity in coronary effluent and cardiac contractile function were monitored to assess cardiac injury and functional impairment. Additionally, cardiac tissue was collected to measure ATP and to isolate mitochondria to measure respiration rate and calcium retention capacity. Adaptation to CNH decreased myocardial creatine kinase release during reperfusion and improved the postischemic recovery of contractile function. Additionally, CNH improved mitochondrial state 3 and uncoupled respiration rates, ADP/O, mitochondrial transmembrane potential and calcium retention capacity and myocardial ATP level during reperfusion compared to the normoxic group. These protective effects were completely abolished by naloxone, TIPP(ψ), naltriben, CTAP but not BNTX or nor-binaltorphimine. These results suggest that cardioprotection associated with adaptation to CNH is mediated by µ and δ2 opioid receptors activation and preservation of mitochondrial function.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - L.N. Maslov
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Tomsk, Russia.
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20
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Naryzhnaya N, Khaliulin I, Lishmanov Y, Suleiman M, Tsibulnikov S, Kolar F, Maslov L. Participation of opioid receptors in the cytoprotective effect of chronic normobaric hypoxia. Physiol Res 2019; 68:245-253. [DOI: 10.33549/physiolres.933938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We studied the role of the delta, micro, and kappa opioid receptor (OR) subtypes in the cardioprotective effect of chronic continuous normobaric hypoxia (CNH) in the model of acuteanoxia-reoxygenation of isolated cardiomyocytes. Adaptation of rats to CNH was performed by their exposure to atmosphere containing 12% of O(2) for 21 days. Anoxia-reoxygenation of cardiomyocytes isolated from normoxiccontrol rats caused the death of 51 % of cells and lactate dehydrogenase (LDH) release. Adaptation of rats to CNH resulted in the anoxia/reoxygenation-induced cardiomyocyte death of only 38 %, and reduced the LDH release by 25 %. Pre-incubation of the cells with either the non-selective OR (opioid receptor) blocker naloxone (300 nM/l), the delta OR antagonist TIPP(psi) (30 nM/l), the selective delta(2) OR antagonist naltriben (1 nM/l) or the micro OR antagonist CTAP (100 nM/l) for 25 minutes before anoxia abolished the reduction of cell death and LDH release afforded by CNH. The antagonist of delta(1) OR BNTX (1 nM/l) or the kappa OR antagonist nor-binaltorphimine (3 nM/l) did not influence the cytoprotective effects of CNH. Taken together, the cytoprotective effect of CNH is associated with the activation of the delta(2) and micro OR localized on cardiomyocytes.
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Affiliation(s)
- N.V. Naryzhnaya
- Laboratory of Experimental Cardiology, Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Tomsk, Russia.
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21
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Mallet RT, Manukhina EB, Ruelas SS, Caffrey JL, Downey HF. Cardioprotection by intermittent hypoxia conditioning: evidence, mechanisms, and therapeutic potential. Am J Physiol Heart Circ Physiol 2018; 315:H216-H232. [PMID: 29652543 DOI: 10.1152/ajpheart.00060.2018] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The calibrated application of limited-duration, cyclic, moderately intense hypoxia-reoxygenation increases cardiac resistance to ischemia-reperfusion stress. These intermittent hypoxic conditioning (IHC) programs consistently produce striking reductions in myocardial infarction and ventricular tachyarrhythmias after coronary artery occlusion and reperfusion and, in many cases, improve contractile function and coronary blood flow. These IHC protocols are fundamentally different from those used to simulate sleep apnea, a recognized cardiovascular risk factor. In clinical studies, IHC improved exercise capacity and decreased arrhythmias in patients with coronary artery or pulmonary disease and produced robust, persistent, antihypertensive effects in patients with essential hypertension. The protection afforded by IHC develops gradually and depends on β-adrenergic, δ-opioidergic, and reactive oxygen-nitrogen signaling pathways that use protein kinases and adaptive transcription factors. In summary, adaptation to intermittent hypoxia offers a practical, largely unrecognized means of protecting myocardium from impending ischemia. The myocardial and perhaps broader systemic protection provided by IHC clearly merits further evaluation as a discrete intervention and as a potential complement to conventional pharmaceutical and surgical interventions.
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Affiliation(s)
- Robert T Mallet
- Department of Integrative Physiology and Anatomy, University of North Texas Health Science Center , Fort Worth, Texas
| | - Eugenia B Manukhina
- Department of Integrative Physiology and Anatomy, University of North Texas Health Science Center , Fort Worth, Texas.,Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences , Moscow , Russian Federation.,School of Medical Biology South Ural State University , Chelyabinsk , Russian Federation
| | - Steven Shea Ruelas
- Department of Integrative Physiology and Anatomy, University of North Texas Health Science Center , Fort Worth, Texas
| | - James L Caffrey
- Department of Integrative Physiology and Anatomy, University of North Texas Health Science Center , Fort Worth, Texas
| | - H Fred Downey
- Department of Integrative Physiology and Anatomy, University of North Texas Health Science Center , Fort Worth, Texas.,School of Medical Biology South Ural State University , Chelyabinsk , Russian Federation
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22
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Ou Y, Weber SG. Higher Aminopeptidase Activity Determined by Electroosmotic Push-Pull Perfusion Contributes to Selective Vulnerability of the Hippocampal CA1 Region to Oxygen Glucose Deprivation. ACS Chem Neurosci 2018; 9:535-544. [PMID: 29078045 DOI: 10.1021/acschemneuro.7b00326] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
It has been known for over a century that the hippocampus, the center for learning and memory in the brain, is selectively vulnerable to ischemic damage, with the CA1 being more vulnerable than the CA3. It is also known that leucine enkephalin, or YGGFL, is neuroprotective. We hypothesized that the extracellular hydrolysis of YGGFL may be greater in the CA1 than the CA3, which would lead to the observed difference in susceptibility to ischemia. In rat organotypic hippocampal slice cultures, we estimated the Michaelis constant and the maximum velocity for membrane-bound aminopeptidase activity in the CA1 and CA3 regions. Using electroosmotic push-pull perfusion and offline capillary liquid chromatography, we inferred enzyme activity based on the production rate of GGFL, a natural and inactive product of the enzymatic hydrolysis of YGGFL. We found nearly 3-fold higher aminopeptidase activity in the CA1 than the CA3. The aminopeptidase inhibitor bestatin significantly reduced hydrolysis of YGGFL in both regions by increasing apparent Km. Based on propidium iodide cell death measurements 24 h after oxygen-glucose deprivation, we demonstrate that inhibition of aminopeptidase activity using bestatin selectively protected CA1 against delayed cell death due to oxygen-glucose deprivation and that this neuroprotection occurs through enkephalin-dependent pathways.
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Affiliation(s)
- Yangguang Ou
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Stephen G. Weber
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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23
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Abstract
Delta opioid receptors (δORs) regulate a number of physiological functions, and agonists for this receptor are being pursued for the treatment of mood disorders, chronic pain, and migraine. A major challenge to the development of these compounds is that, like many G-protein coupled receptors (GPCRs), agonists at the δOR can induce very different signaling and receptor trafficking events. This concept, known as ligand-directed signaling, functional selectivity, or biased agonism, can result in different agonists producing highly distinct behavioral consequences. In this chapter, we highlight the in vitro and in vivo evidence for ligand-directed signaling and trafficking at the δOR. A number of biological implications of agonist-directed signaling at the δOR have been demonstrated. Importantly, ligand-specific effects can impact both acute behavioral effects of delta agonists, as well as the long-term adaptations induced by chronic drug treatment. A better understanding of the specific signaling cascades that regulate these differential behavioral effects would help to guide rational drug design, ultimately resulting in δOR agonists with fewer adverse effects.
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Affiliation(s)
- Ana Vicente-Sanchez
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - Amynah A Pradhan
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA.
- Department of Psychiatry, UIC, 1601 W Taylor St (MC 912), Chicago, IL, 60612, USA.
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24
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Gorbunov AS, Vaizova OE, Belousov MV, Pozdnyakova SV, Nesterov EA, Madonov PG. Role of Endogenous Agonists of Opioid Receptors in the Regulation of Heart Resistance to Postischemic Reperfusion Injury. Bull Exp Biol Med 2017; 164:18-20. [DOI: 10.1007/s10517-017-3916-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Indexed: 02/07/2023]
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Lishmanov YB, Naryzhnaya NV, Tsibul’nikov SY, Wang H, Maslov LN. Role of ATP-Sensitive K+ Channels in Myocardial Infarct Size-Limiting Effect of Chronic Continuous Normobaric Hypoxia. Bull Exp Biol Med 2017; 163:22-24. [DOI: 10.1007/s10517-017-3728-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Indexed: 11/25/2022]
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Selective replacement of mitochondrial DNA increases the cardioprotective effect of chronic continuous hypoxia in spontaneously hypertensive rats. Clin Sci (Lond) 2017; 131:865-881. [PMID: 28292971 DOI: 10.1042/cs20170083] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/08/2017] [Accepted: 03/14/2017] [Indexed: 12/13/2022]
Abstract
Mitochondria play an essential role in improved cardiac ischaemic tolerance conferred by adaptation to chronic hypoxia. In the present study, we analysed the effects of continuous normobaric hypoxia (CNH) on mitochondrial functions, including the sensitivity of the mitochondrial permeability transition pore (MPTP) to opening, and infarct size (IS) in hearts of spontaneously hypertensive rats (SHR) and the conplastic SHR-mtBN strain, characterized by the selective replacement of the mitochondrial genome of SHR with that of the more ischaemia-resistant brown Norway (BN) strain. Rats were adapted to CNH (10% O2, 3 weeks) or kept at room air as normoxic controls. In the left ventricular mitochondria, respiration and cytochrome c oxidase (COX) activity were measured using an Oxygraph-2k and the sensitivity of MPTP opening was assessed spectrophotometrically as Ca2+-induced swelling. Myocardial infarction was analysed in anaesthetized open-chest rats subjected to 20 min of coronary artery occlusion and 3 h of reperfusion. The IS reached 68±3.0% and 65±5% of the area at risk in normoxic SHR and SHR-mtBN strains, respectively. CNH significantly decreased myocardial infarction to 46±3% in SHR. In hypoxic SHR-mtBN strain, IS reached 33±2% and was significantly smaller compared with hypoxic SHR. Mitochondria isolated from hypoxic hearts of both strains had increased detergent-stimulated COX activity and were less sensitive to MPTP opening. The maximum swelling rate was significantly lower in hypoxic SHR-mtBN strain compared with hypoxic SHR, and positively correlated with myocardial infarction in all experimental groups. In conclusion, the mitochondrial genome of SHR modulates the IS-limiting effect of adaptation to CNH by affecting mitochondrial energetics and MPTP sensitivity to opening.
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Zhang WP, Zong QF, Gao Q, Yu Y, Gu XY, Wang Y, Li ZH, Ge M. Effects of endomorphin-1 postconditioning on myocardial ischemia/reperfusion injury and myocardial cell apoptosis in a rat model. Mol Med Rep 2016; 14:3992-8. [DOI: 10.3892/mmr.2016.5695] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 07/29/2016] [Indexed: 11/06/2022] Open
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Abstract
Remote ischemic preconditioning (RIPC) is an intriguing process whereby transient regional ischemia and reperfusion episodes to remote tissues including skeletal, renal, mesenteric provide protection to the heart against sustained ischemia-reperfusion-induced injury. Clinically, this technique has been used in patients undergoing various surgical interventions including coronary artery bypass graft surgery, abdominal aortic aneurysm repair, percutaneous coronary intervention, and heart valve surgery. The endogenous opioid system is extensively expressed in the brain to modulate pain sensation. Besides the role of opioids in relieving pain, numerous researchers have found their critical involvement in evoking cardioprotective effects. Endogenous opioids including endorphins, enkephalins, and dynorphins are released during RIPC and are critically involved in mediating RIPC-induced cardioprotective effects. It has been suggested that during RIPC, the endogenous opioids may be released into the systemic circulation and may travel via bloodstream that act on the myocardial opioid receptors to induce cardioprotection. The present review describes the potential role of opioids in mediating RIPC-induced cardioprotection.
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Affiliation(s)
- Puneet Kaur Randhawa
- 1 Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Patiala, Punjab, India
| | - Amteshwar Singh Jaggi
- 1 Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Patiala, Punjab, India
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δ-Opioid receptors: Pivotal role in intermittent hypoxia-augmentation of cardiac parasympathetic control and plasticity. Auton Neurosci 2016; 198:38-49. [PMID: 27498137 DOI: 10.1016/j.autneu.2016.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/12/2016] [Accepted: 07/22/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Intermittent hypoxia training (IHT) produces robust myocardial protection against ischemia-reperfusion induced infarction and arrhythmias. Blockade of this cardioprotection by antagonism of either β1-adrenergic or δ-opioid receptors (δ-OR) suggests autonomic and/or opioidergic adaptations. PURPOSE To test the hypothesis that IHT shifts cardiac autonomic balance toward greater cholinergic and opioidergic influence. METHODS Mongrel dogs completed 20d IHT, non-hypoxic sham training, or IHT with the δ-OR antagonist naltrindole (200μg/kgsc). The vagolytic effect of the δ-OR agonist met-enkephalin-arg-phe delivered by sinoatrial microdialysis was evaluated following IHT. Sinoatrial, atrial and left ventricular biopsies were analyzed for changes in δ-OR, the neurotrophic monosialoganglioside, GM-1, and cholinergic and adrenergic markers. RESULTS IHT enhanced vagal bradycardia vs. sham dogs (P<0.05), and blunted the δ2-OR mediated vagolytic effect of met-enkephalin-arg-phe. The GM-1 labeled fibers overlapped strongly with cholinergic markers, and IHT increased the intensity of both signals (P<0.05). IHT increased low and high intensity vesicular acetylcholine transporter labeling of sinoatrial nodal fibers (P<0.05) suggesting an increase in parasympathetic arborization. IHT reduced select δ-OR labeled fibers in both the atria and sinoatrial node (P<0.05) consistent with moderation of the vagolytic δ2-OR signaling described above. Furthermore, blockade of δ-OR signaling with naltrindole during IHT increased the protein content of δ-OR (atria and ventricle) and vesicular acetylcholine transporter (atria) vs. sham and untreated IHT groups. IHT also reduced the sympathetic marker, tyrosine hydroxylase in ventricle (P<0.05). SUMMARY IHT shifts cardiac autonomic balance in favor of parasympathetic control via adaptations in opioidergic, ganglioside, and adrenergic systems.
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δ-Opioid receptor (DOR) signaling and reactive oxygen species (ROS) mediate intermittent hypoxia induced protection of canine myocardium. Basic Res Cardiol 2016; 111:17. [PMID: 26879900 DOI: 10.1007/s00395-016-0538-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/09/2016] [Indexed: 01/01/2023]
Abstract
Intermittent, normobaric hypoxia confers robust cardioprotection against ischemia-induced myocardial infarction and lethal ventricular arrhythmias. δ-Opioid receptor (DOR) signaling and reactive oxygen species (ROS) have been implicated in cardioprotective phenomena, but their roles in intermittent hypoxia are unknown. This study examined the contributions of DOR and ROS in mediating intermittent hypoxia-induced cardioprotection. Mongrel dogs completed a 20 day program consisting of 5-8 daily, 5-10 min cycles of moderate, normobaric hypoxia (FIO2 0.095-0.10), with intervening 4 min room air exposures. Subsets of dogs received the DOR antagonist naltrindole (200 μg/kg, sc) or antioxidant N-acetylcysteine (250 mg/kg, po) before each hypoxia session. Twenty-four hours after the last session, the left anterior descending coronary artery was occluded for 60 min and then reperfused for 5 h. Arrhythmias detected by electrocardiography were scored according to the Lambeth II conventions. Left ventricles were sectioned and stained with 2,3,5-triphenyl-tetrazolium-chloride, and infarct sizes were expressed as percentages of the area at risk (IS/AAR). Intermittent hypoxia sharply decreased IS/AAR from 41 ± 5 % (n = 12) to 1.8 ± 0.9 % (n = 9; P < 0.001) and arrhythmia score from 4.1 ± 0.3 to 0.7 ± 0.2 (P < 0.001) vs. non-hypoxic controls. Naltrindole (n = 6) abrogated the cardioprotection with IS/AAR 35 ± 5 % and arrhythmia score 3.7 ± 0.7 (P < 0.001 vs. untreated intermittent hypoxia). N-acetylcysteine (n = 6) interfered to a similar degree, with IS/AAR 42 ± 3 % and arrhythmia score 4.7 ± 0.3 (P < 0.001 vs. untreated intermittent hypoxia). Without the intervening reoxygenations, hypoxia (n = 4) was not cardioprotective (IS/AAR 50 ± 8 %; arrhythmia score 4.5 ± 0.5; P < 0.001 vs. intermittent hypoxia). Thus DOR, ROS and cyclic reoxygenation were obligatory participants in the gradually evolving cardioprotection produced by intermittent hypoxia.
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Kasparova D, Neckar J, Dabrowska L, Novotny J, Mraz J, Kolar F, Zurmanova J. Cardioprotective and nonprotective regimens of chronic hypoxia diversely affect the myocardial antioxidant systems. Physiol Genomics 2015; 47:612-20. [PMID: 26465708 DOI: 10.1152/physiolgenomics.00058.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 10/07/2015] [Indexed: 12/19/2022] Open
Abstract
It has been documented that adaptation to hypoxia increases myocardial tolerance to ischemia-reperfusion (I/R) injury depending on the regimen of adaptation. Reactive oxygen species (ROS) formed during hypoxia play an important role in the induction of protective cardiac phenotype. On the other hand, the excess of ROS can contribute to tissue damage caused by I/R. Here we investigated the relationship between myocardial tolerance to I/R injury and transcription activity of major antioxidant genes, transcription factors, and oxidative stress in three different regimens of chronic hypoxia. Adult male Wistar rats were exposed to continuous normobaric hypoxia (FiO2 0.1) either continuously (CNH) or intermittently for 8 h/day (INH8) or 23 h/day (INH23) for 3 wk period. A control group was kept in room air. Myocardial infarct size was assessed in anesthetized open-chest animals subjected to 20 min coronary artery occlusion and 3 h reperfusion. Levels of mRNA transcripts and the ratio of reduced and oxidized glutathione (GSH/GSSG) were analyzed by real-time RT-PCR and by liquid chromatography, respectively. Whereas CNH as well as INH8 decreased infarct size, 1 h daily reoxygenation (INH23) abolished the cardioprotective effect and decreased GSH/GSSG ratio. The majority of mRNAs of antioxidant genes related to mitochondrial antioxidant defense (manganese superoxide dismutase, glutathione reductase, thioredoxin/thioredoxin reductase, and peroxiredoxin 2) were upregulated in both cardioprotective regimens (CNH, INH8). In contrast, INH23 increased only PRX5, which was not sufficient to induce the cardioprotective phenotype. Our results suggest that the increased mitochondrial antioxidant defense plays an important role in cardioprotection afforded by chronic hypoxia.
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Affiliation(s)
- Dita Kasparova
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Jan Neckar
- Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic; and
| | | | - Jiri Novotny
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic
| | - Jaroslav Mraz
- National Institute of Public Health, Prague, Czech Republic
| | - Frantisek Kolar
- Institute of Physiology, The Czech Academy of Sciences, Prague, Czech Republic; and
| | - Jitka Zurmanova
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic;
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Contribution of Opioid Receptors to the Cytoprotective Effect of the Adaptation to Chronic Hypoxia at Anoxia/Reoxygenation of Isolated Cardiomyocytes. Bull Exp Biol Med 2015; 159:209-12. [DOI: 10.1007/s10517-015-2924-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Indexed: 11/26/2022]
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Xu P, Li M, Bai Y, Lu W, Ling X, Li W. The effects of piracetam on heroin-induced CPP and neuronal apoptosis in rats. Drug Alcohol Depend 2015; 150:141-6. [PMID: 25801591 DOI: 10.1016/j.drugalcdep.2015.02.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/27/2015] [Accepted: 02/22/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Piracetam is a positive allosteric modulator of the AMPA receptor that has been used in the treatment of cognitive disorders for decades. Recent surveys and drug analyses have demonstrated that a heroin mixture adulterated with piracetam has spread rapidly in heroin addicts in China, but its addictive properties and the damage it causes to the central neural system are currently unknown. METHODS The effect of piracetam on the reward properties of heroin was assessed by conditioned place preference (CPP). Electron microscopy and radioimmunoassay were used to compare the effects of heroin mixed with equivalent piracetam (HP) and heroin alone on neuronal apoptosis and the levels of beta-endorphin (β-EP) in different brain subregions within the corticolimbic system, respectively. RESULTS Piracetam significantly enhanced heroin-induced CPP expression while piracetam itself didn't induce CPP. Morphological observations showed that HP-treated rats had less neuronal apoptosis than heroin-treated group. Interestingly, HP normalized the levels of β-EP in the medial prefrontal cortex (mPFC) and core of the nucleus accumbens (AcbC) subregions, in where heroin-treated rats showed decreased levels of β-EP. CONCLUSIONS These results indicate that piracetam potentiate the heroin-induced CPP and protect neurons from heroin-induced apoptosis. The protective role of HP might be related to the restoration of β-EP levels by piracetam. Our findings may provide a potential interpretation for the growing trend of HP abuse in addicts in China.
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Affiliation(s)
- Peng Xu
- School of Pharmaceutical Science, Peking University, Beijing 100191, PR China; Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing 100193, PR China
| | - Min Li
- School of Basic Medical Sciences, Peking University, Beijing 100191, PR China
| | - Yanping Bai
- Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing 100193, PR China
| | - Wei Lu
- School of Pharmaceutical Science, Peking University, Beijing 100191, PR China
| | - Xiaomei Ling
- School of Pharmaceutical Science, Peking University, Beijing 100191, PR China.
| | - Weidong Li
- School of Basic Medical Sciences, Peking University, Beijing 100191, PR China.
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Maslov LN, Naryzhnaya NV, Prokudina ES, Kolar F, Gorbunov AS, Zhang Y, Wang H, Tsibulnikov SY, Portnichenko AG, Lasukova TV, Lishmanov YB. Preserved cardiac mitochondrial function and reduced ischaemia/reperfusion injury afforded by chronic continuous hypoxia: Role of opioid receptors. Clin Exp Pharmacol Physiol 2015; 42:496-501. [DOI: 10.1111/1440-1681.12383] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/12/2014] [Accepted: 12/24/2014] [Indexed: 01/29/2023]
Affiliation(s)
- Leonid N Maslov
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
| | - Natalia V Naryzhnaya
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
| | - Ekaterina S Prokudina
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
| | - Frantisek Kolar
- Department of Developmental Cardiology; Institute of Physiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - Alexander S Gorbunov
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
| | - Yi Zhang
- Department of Physiology; Hebei Medical University; Shijiazhuang China
| | - Hongxin Wang
- Department of Pharmacology; Liaoning Medical College; Jinzhou City China
| | - Sergey Yu Tsibulnikov
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
| | - Alla G Portnichenko
- Bogomoletz Institute of Physiology; National Academy of Sciences of Ukraine; Kiev Ukraine
| | | | - Yury B Lishmanov
- Laboratory of Experimental Cardiology; Federal State Budgetary Scientific Institution; Research Institute for Cardiology; Tomsk Russia
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35
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HOLZEROVÁ K, HLAVÁČKOVÁ M, ŽURMANOVÁ J, BORCHERT G, NECKÁŘ J, KOLÁŘ F, NOVÁK F, NOVÁKOVÁ O. Involvement of PKCε in Cardioprotection Induced by Adaptation to Chronic Continuous Hypoxia. Physiol Res 2015; 64:191-201. [DOI: 10.33549/physiolres.932860] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Continuous normobaric hypoxia (CNH) renders the heart more tolerant to acute ischemia/reperfusion injury. Protein kinase C (PKC) is an important component of the protective signaling pathway, but the contribution of individual PKC isoforms under different hypoxic conditions is poorly understood. The aim of this study was to analyze the expression of PKCε after the adaptation to CNH and to clarify its role in increased cardiac ischemic tolerance with the use of PKCε inhibitory peptide KP-1633. Adult male Wistar rats were exposed to CNH (10 % O2, 3 weeks) or kept under normoxic conditions. The protein level of PKCε and its phosphorylated form was analyzed by Western blot in homogenate, cytosolic and particulate fractions; the expression of PKCε mRNA was measured by RT-PCR. The effect of KP-1633 on cell viability and lactate dehydrogenase (LDH) release was analyzed after 25-min metabolic inhibition followed by 30-min re-energization in freshly isolated left ventricular myocytes. Adaptation to CNH increased myocardial PKCε at protein and mRNA levels. The application of KP-1633 blunted the hypoxia-induced salutary effects on cell viability and LDH release, while control peptide KP-1723 had no effect. This study indicates that PKCε is involved in the cardioprotective mechanism induced by CNH.
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Affiliation(s)
| | - M. HLAVÁČKOVÁ
- Department of Developmental Cardiology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
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Wang AL, Elman I, Lowen SB, Blady SJ, Lynch KG, Hyatt JM, O'Brien CP, Langleben DD. Neural correlates of adherence to extended-release naltrexone pharmacotherapy in heroin dependence. Transl Psychiatry 2015; 5:e531. [PMID: 25781230 PMCID: PMC4354350 DOI: 10.1038/tp.2015.20] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 01/12/2015] [Accepted: 01/12/2015] [Indexed: 11/17/2022] Open
Abstract
Injectable extended-release naltrexone (XRNTX) presents an effective therapeutic strategy for opioid addiction, however its utility could be hampered by poor adherence. To gain a better insight into this phenomenon, we utilized blood oxygenation level-dependent functional magnetic resonance imaging (fMRI) in conjunction with a validated cue-induced craving procedure to examine neural correlates of XRNTX adherence. We operationalized treatment adherence as the number of monthly XRNTX injections (range: 0-3) administered to a group of fully detoxified heroin-dependent subjects (n=32). Additional outcomes included urine toxicology screening and self-reported tobacco use. The presented heroin-related visual cues reliably elicited heroin craving in all tested subjects. Nine, five, three and 15 of the participants, respectively, received zero, one, two and three XRNTX injections, predicted by the individual baseline fMRI signal change in response to the cues in the medial prefrontal cortex, a brain region involved in inhibitory self-control and emotional appraisal. The incidence of opioid-positive urines during the XRNTX therapy was low and remained about half the pre-treatment rate after the XRNTX ended. During the treatment, cigarette smoking behaviors followed patterns of opioid use, while cocaine consumption was increased with reductions in opioid use. The present data support the hypothesis that medial prefrontal cortex functions are involved in adherence to opioid antagonist therapy. A potential role of concurrent non-opioid addictive substances consumption during the XRNTX pharmacotherapy warrants further investigation. Our findings set the stage for further bio-behavioral investigations of the mechanisms of relapse prevention in opioid dependence.
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Affiliation(s)
- A-L Wang
- Annenberg Public Policy Center, University of Pennsylvania, Philadelphia, PA, USA
| | - I Elman
- Cambridge Health Alliance, Department of Psychiatry, Harvard Medical School, Cambridge, MA, USA
| | - S B Lowen
- Brain Imaging Center, McLean Hospital, Department of Psychiatry, Harvard Medical School, Belmont, MA, USA
| | - S J Blady
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - K G Lynch
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J M Hyatt
- Department of Criminology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA
| | - C P O'Brien
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - D D Langleben
- Annenberg Public Policy Center, University of Pennsylvania, Philadelphia, PA, USA
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Behavioral Health Service, Veterans Administration Medical Center, Philadelphia, PA, USA
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Abstract
This paper is the thirty-sixth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2013 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia; stress and social status; tolerance and dependence; learning and memory; eating and drinking; alcohol and drugs of abuse; sexual activity and hormones, pregnancy, development and endocrinology; mental illness and mood; seizures and neurologic disorders; electrical-related activity and neurophysiology; general activity and locomotion; gastrointestinal, renal and hepatic functions; cardiovascular responses; respiration and thermoregulation; and immunological responses.
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Gooshe M, Abdolghaffari AH, Aleyasin AR, Chabouk L, Tofigh S, Hassanzadeh GR, Payandemehr B, Partoazar A, Azizi Y, Dehpour AR. Hypoxia/ischemia a key player in early post stroke seizures: modulation by opioidergic and nitrergic systems. Eur J Pharmacol 2014; 746:6-13. [PMID: 25449041 DOI: 10.1016/j.ejphar.2014.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 01/14/2023]
Abstract
Stroke is a leading cause of death, disability, and socioeconomic loss worldwide. All attempts at pharmacological reduction of the complications of stroke (e.g. post-stroke seizure, and brain׳s vulnerability to hypoxic/ischemic injury) have failed. Endogenous opioids and nitric oxide (NO) overproduction has been documented in brain hypoxia/ischemia (H/I), which can exert pro-convulsive effects. In this study, we aimed to examine the possible involvement of opioidergic and nitrergic pathways in the pathogenesis of post-stroke seizure. H/I was induced by right common carotid ligation and sham-operated mice served as controls. We demonstrated that right common carotid ligation decreases the threshold for clonic seizures induced by pentylenetetrazole (PTZ), a GABA antagonist. Furthermore, pro-convulsive effect of H/I following right common carotid ligation was blocked by naltrexone (NTX) (3mg/kg), NG-Nitro-l-arginine methyl ester (l-NAME) (10mg/kg), and aminoguanidine (AG) (100mg/kg) administration (P<0.001). Interestingly, co-administration of non-effective doses of NTX and l-NAME (1 and 0.5mg/kg, respectively) reverses epileptogenesis of H/I (P<0.001). In the same way, co-administration of non-effective doses of NTX and AG (1 and 5mg/kg, respectively), reverses epileptogenesis of H/I (P<0.001). Indeed, the histological studies performed on mice exposed to H/I confirmed our previous data. These findings suggest hyper-susceptibility to PTZ induced seizure following H/I is mediated by interaction of opioidergic, and iNOS/NO pathways. Therefore, our results identify new pharmacological targets and provide the rationale for a novel strategy to promote recovery after stroke and possibly other brain injuries.
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Affiliation(s)
- Maziar Gooshe
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Students׳ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Hossein Abdolghaffari
- Pharmacology and Applied Medicine, Department of Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran; International Campus, ICTUMS, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Reza Aleyasin
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Students׳ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Leila Chabouk
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sina Tofigh
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholam Reza Hassanzadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Borna Payandemehr
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Partoazar
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Yaser Azizi
- Department of Physiology, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Ahmad Reza Dehpour
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Gendron L, Mittal N, Beaudry H, Walwyn W. Recent advances on the δ opioid receptor: from trafficking to function. Br J Pharmacol 2014; 172:403-19. [PMID: 24665909 DOI: 10.1111/bph.12706] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 01/12/2023] Open
Abstract
UNLABELLED Within the opioid family of receptors, δ (DOPrs) and μ opioid receptors (MOPrs) are typical GPCRs that activate canonical second-messenger signalling cascades to influence diverse cellular functions in neuronal and non-neuronal cell types. These receptors activate well-known pathways to influence ion channel function and pathways such as the map kinase cascade, AC and PI3K. In addition new information regarding opioid receptor-interacting proteins, downstream signalling pathways and resultant functional effects has recently come to light. In this review, we will examine these novel findings focusing on the DOPr and, in doing so, will contrast and compare DOPrs with MOPrs in terms of differences and similarities in function, signalling pathways, distribution and interactions. We will also discuss and clarify issues that have recently surfaced regarding the expression and function of DOPrs in different cell types and analgesia. LINKED ARTICLES This article is part of a themed section on Opioids: New Pathways to Functional Selectivity. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2015.172.issue-2.
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Affiliation(s)
- Louis Gendron
- Département de physiologie et biophysique, Institut de pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Sherbrooke, QC, Canada
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