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Meza-Buendia AK, Aparicio-Trejo OE, Díaz F, Pedraza-Chaverri J, Álvarez-Delgado C, Rosas C. Climate change consequences on the systemic heart of female Octopus maya: oxidative phosphorylation assessment and the antioxidant system. Biol Open 2024; 13:bio060103. [PMID: 38752595 PMCID: PMC11155352 DOI: 10.1242/bio.060103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 04/05/2024] [Indexed: 06/09/2024] Open
Abstract
There is evidence that indicates that temperature modulates the reproduction of the tropical species Octopus maya, through the over- or under-expression of many genes in the brain. If the oxygen supply to the brain depends on the circulatory system, how temperature affects different tissues will begin in the heart, responsible for pumping the oxygen to tissues. The present study examines the impact of heat stress on the mitochondrial function of the systemic heart of adult O. maya. The mitochondrial metabolism and antioxidant defense system were measured in the systemic heart tissue of female organisms acclimated to different temperatures (24, 26, and 30°C). The results show that acclimation temperature affects respiratory State 3 and State 4o (oligomycin-induced) with higher values observed in females acclimated at 26°C. The antioxidant defense system is also affected by acclimation temperature with significant differences observed in superoxide dismutase, glutathione S-transferase activities, and glutathione levels. The results suggest that high temperatures (30°C) could exert physical limitations on the circulatory system through the heart pumping, affecting nutrient and oxygen transport to other tissues, including the brain, which exerts control over the reproductive system. The role of the cardiovascular system in supporting aerobic metabolism in octopus females is discussed.
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Affiliation(s)
- Ana Karen Meza-Buendia
- Departamento de Biotecnología Marina, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860Ensenada, Baja California, México
| | - Omar Emiliano Aparicio-Trejo
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología “Ignacio Chávez”, 14080 Ciudad de México, México
| | - Fernando Díaz
- Departamento de Biotecnología Marina, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860Ensenada, Baja California, México
| | - José Pedraza-Chaverri
- Laboratorio F-315, Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, 04510, Ciudad de México, México
| | - Carolina Álvarez-Delgado
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860 Ensenada, Baja California, México
| | - Carlos Rosas
- Laboratorio de Ecofisiología Aplicada, Unidad Multidisciplinaria de Docencia e Investigación, de Sisal, Facultad de Ciencias, Universidad Nacional Autónoma de México, 97356 Puerto de Abrigo, Sisal, Yucatán, México
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2
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Takenaka Y, Hirasaki M, Bono H, Nakamura S, Kakinuma Y. Transcriptome Analysis Reveals Enhancement of Cardiogenesis-Related Signaling Pathways by S-Nitroso- N -Pivaloyl- d -Penicillamine: Implications for Improved Diastolic Function and Cardiac Performance. J Cardiovasc Pharmacol 2024; 83:433-445. [PMID: 38422186 DOI: 10.1097/fjc.0000000000001552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 02/10/2024] [Indexed: 03/02/2024]
Abstract
ABSTRACT We previously reported a novel compound called S-nitroso- N -pivaloyl- d -penicillamine (SNPiP), which was screened from a group of nitric oxide donor compounds with a basic chemical structure of S-nitroso- N -acetylpenicillamine, to activate the nonneuronal acetylcholine system. SNPiP-treated mice exhibited improved cardiac output and enhanced diastolic function, without an increase in heart rate. The nonneuronal acetylcholine-activating effects included increased resilience to ischemia, modulation of energy metabolism preference, and activation of angiogenesis. Here, we performed transcriptome analysis of SNPiP-treated mice ventricles to elucidate how SNPiP exerts beneficial effects on cardiac function. A time-course study (24 and 48 hours after SNPiP administration) revealed that SNPiP initially induced Wnt and cyclic guanosine monophosphate-protein kinase G signaling pathways, along with upregulation of genes involved in cardiac muscle tissue development and oxytocin signaling pathway. We also observed enrichment of glycolysis-related genes in response to SNPiP treatment, resulting in a metabolic shift from oxidative phosphorylation to glycolysis, which was suggested by reduced cardiac glucose contents while maintaining adenosine tri-phosphate levels. In addition, SNPiP significantly upregulated atrial natriuretic peptide and sarcolipin, which play crucial roles in calcium handling and cardiac performance. These findings suggest that SNPiP may have therapeutic potential based on the pleiotropic mechanisms elucidated in this study.
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Affiliation(s)
- Yasuhiro Takenaka
- Department of Bioregulatory Science, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Masataka Hirasaki
- Department of Clinical Cancer Genomics, International Medical Center, Saitama Medical University, Saitama, Japan
| | - Hidemasa Bono
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan; and
| | - Shigeo Nakamura
- Department of Chemistry, Nippon Medical School, Tokyo, Japan
| | - Yoshihiko Kakinuma
- Department of Bioregulatory Science, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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3
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Mjörnstedt F, Miljanovic A, Wilhelmsson R, Levin M, Johansson ME. Alpha 7 Nicotinic Acetylcholine Receptor Agonist PHA 568487 Reduces Acute Inflammation but Does Not Affect Cardiac Function or Myocardial Infarct Size in the Permanent Occlusion Model. Int J Mol Sci 2024; 25:4414. [PMID: 38674000 PMCID: PMC11050294 DOI: 10.3390/ijms25084414] [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: 02/14/2024] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Stimulation of the alpha 7 nicotinic acetylcholine receptor (α7nAChR) has shown beneficial effects in several acute inflammatory disease models. This study aims to examine whether treatment with the selective α7nAChR agonist PHA 568487 can dampen inflammation and thereby improve cardiac function after myocardial infarction in mice. The possible anti-inflammatory properties of α7nAChR agonist PHA 568487 were tested in vivo using the air pouch model and in a permanent occlusion model of acute myocardial infarction in mice. Hematologic parameters and cytokine levels were determined. Infarct size and cardiac function were assessed via echocardiography 24 h and one week after the infarction. Treatment with α7nAChR agonist PHA 568487 decreased 12 (CCL27, CXCL5, IL6, CXCL10, CXCL11, CXCL1, CCL2, MIP1a, MIP2, CXCL16, CXCL12 and CCL25) out of 33 cytokines in the air pouch model of acute inflammation. However, α7nAChR agonist PHA 568487 did not alter infarct size, ejection fraction, cardiac output or stroke volume at 24 h or at 7 days after the myocardial infarction compared with control mice. In conclusion, despite promising immunomodulatory effects in the acute inflammatory air pouch model, α7nAChR agonist PHA 568487 did not affect infarct size or cardiac function after a permanent occlusion model of acute myocardial infarction in mice. Consequently, this study does not strengthen the hypothesis that stimulation of the α7nAChR is a future treatment strategy for acute myocardial infarction when reperfusion is lacking. However, whether other agonists of the α7nAChR can have different effects remains to be investigated.
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Affiliation(s)
- Filip Mjörnstedt
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
| | - Azra Miljanovic
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden; (A.M.); (M.L.)
| | - Rebecka Wilhelmsson
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
| | - Malin Levin
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden; (A.M.); (M.L.)
| | - Maria E. Johansson
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
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4
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Targosova K, Kucera M, Fazekas T, Kilianova Z, Stankovicova T, Hrabovska A. α7 nicotinic receptors play a role in regulation of cardiac hemodynamics. J Neurochem 2024; 168:414-427. [PMID: 37017608 DOI: 10.1111/jnc.15821] [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: 01/30/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/06/2023]
Abstract
The α7 nicotinic receptors (NR) have been confirmed in the heart but their role in cardiac functions has been contradictory. To address these contradictory findings, we analyzed cardiac functions in α7 NR knockout mice (α7-/-) in vivo and ex vivo in isolated hearts. A standard limb leads electrocardiogram was used, and the pressure curves were recorded in vivo, in Arteria carotis and in the left ventricle, or ex vivo, in the left ventricle of the spontaneously beating isolated hearts perfused following Langedorff's method. Experiments were performed under basic conditions, hypercholinergic conditions, and adrenergic stress. The relative expression levels of α and β NR subunits, muscarinic receptors, β1 adrenergic receptors, and acetylcholine life cycle markers were determined using RT-qPCR. Our results revealed a prolonged QT interval in α7-/- mice. All in vivo hemodynamic parameters were preserved under all studied conditions. The only difference in ex vivo heart rate between genotypes was the loss of bradycardia in prolonged incubation of isoproterenol-pretreated hearts with high doses of acetylcholine. In contrast, left ventricular systolic pressure was lower under basal conditions and showed a significantly higher increase during adrenergic stimulation. No changes in mRNA expression were observed. In conclusion, α7 NR has no major effect on heart rate, except when stressed hearts are exposed to a prolonged hypercholinergic state, suggesting a role in acetylcholine spillover control. In the absence of extracardiac regulatory mechanisms, left ventricular systolic impairment is revealed.
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Affiliation(s)
- Katarina Targosova
- Faculty of Pharmacy, Department of Pharmacology and Toxicology, Comenius University Bratislava, Bratislava, Slovakia
| | - Matej Kucera
- Faculty of Pharmacy, Department of Pharmacology and Toxicology, Comenius University Bratislava, Bratislava, Slovakia
| | - Tomas Fazekas
- Faculty of Pharmacy, Department of Physical Chemistry of Drugs, Comenius University Bratislava, Bratislava, Slovakia
| | - Zuzana Kilianova
- Faculty of Pharmacy, Department of Pharmacology and Toxicology, Comenius University Bratislava, Bratislava, Slovakia
| | - Tatiana Stankovicova
- Faculty of Pharmacy, Department of Pharmacology and Toxicology, Comenius University Bratislava, Bratislava, Slovakia
| | - Anna Hrabovska
- Faculty of Pharmacy, Department of Pharmacology and Toxicology, Comenius University Bratislava, Bratislava, Slovakia
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5
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Kakinuma Y. Non-neuronal cholinergic system in the heart influences its homeostasis and an extra-cardiac site, the blood-brain barrier. Front Cardiovasc Med 2024; 11:1384637. [PMID: 38601043 PMCID: PMC11004362 DOI: 10.3389/fcvm.2024.1384637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024] Open
Abstract
The non-neuronal cholinergic system of the cardiovascular system has recently gained attention because of its origin. The final product of this system is acetylcholine (ACh) not derived from the parasympathetic nervous system but from cardiomyocytes, endothelial cells, and immune cells. Accordingly, it is defined as an ACh synthesis system by non-neuronal cells. This system plays a dispensable role in the heart and cardiomyocytes, which is confirmed by pharmacological and genetic studies using murine models, such as models with the deletion of vesicular ACh transporter gene and modulation of the choline acetyltransferase (ChAT) gene. In these models, this system sustained the physiological function of the heart, prevented the development of cardiac hypertrophy, and negatively regulated the cardiac metabolism and reactive oxygen species production, resulting in sustained cardiac homeostasis. Further, it regulated extra-cardiac organs, as revealed by heart-specific ChAT transgenic (hChAT tg) mice. They showed enhanced functions of the blood-brain barrier (BBB), indicating that the augmented system influences the BBB through the vagus nerve. Therefore, the non-neuronal cardiac cholinergic system indirectly influences brain function. This mini-review summarizes the critical cardiac phenotypes of hChAT tg mice and focuses on the effect of the system on BBB functions. We discuss the possibility that a cholinergic signal or vagus nerve influences the expression of BBB component proteins to consolidate the barrier, leading to the downregulation of inflammatory responses in the brain, and the modulation of cardiac dysfunction-related effects on the brain. This also discusses the possible interventions using the non-neuronal cardiac cholinergic system.
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Affiliation(s)
- Yoshihiko Kakinuma
- Department of Bioregulatory Science, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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6
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An X, Cho H. Increased GIRK channel activity prevents arrhythmia in mice with heart failure by enhancing ventricular repolarization. Sci Rep 2023; 13:22479. [PMID: 38110503 PMCID: PMC10728207 DOI: 10.1038/s41598-023-50088-2] [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: 06/26/2023] [Accepted: 12/15/2023] [Indexed: 12/20/2023] Open
Abstract
Ventricular arrhythmia causing sudden cardiac death is the leading mode of death in patients with heart failure. Yet, the mechanisms that prevent ventricular arrhythmias in heart failure are not well characterized. Using a mouse model of heart failure created by transverse aorta constriction, we show that GIRK channel, an important regulator of cardiac action potentials, is constitutively active in failing ventricles in contrast to normal cells. Evidence is presented indicating that the tonic activation of M2 muscarinic acetylcholine receptors by endogenously released acetylcholine contributes to the constitutive GIRK activity. This constitutive GIRK activity prevents the action potential prolongation in heart failure ventricles. Consistently, GIRK channel blockade with tertiapin-Q induces QT interval prolongation and increases the incidence of arrhythmia in heart failure, but not in control mice. These results suggest that constitutive GIRK channels comprise a key mechanism to protect against arrhythmia by providing repolarizing currents in heart failure ventricles.
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Affiliation(s)
- Xue An
- Department of Physiology, Sungkyunkwan University School of Medicine, Suwon, 16419, Korea
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Hana Cho
- Department of Physiology, Sungkyunkwan University School of Medicine, Suwon, 16419, Korea.
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7
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Sun T, Grassam-Rowe A, Pu Z, Li Y, Ren H, An Y, Guo X, Hu W, Liu Y, Zheng Y, Liu Z, Kou K, Ou X, Chen T, Fan X, Liu Y, Tu S, He Y, Ren Y, Chen A, Shang Z, Xia Z, Miquerol L, Smart N, Zhang H, Tan X, Shou W, Lei M. Dbh + catecholaminergic cardiomyocytes contribute to the structure and function of the cardiac conduction system in murine heart. Nat Commun 2023; 14:7801. [PMID: 38016975 PMCID: PMC10684617 DOI: 10.1038/s41467-023-42658-9] [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: 12/19/2022] [Accepted: 10/18/2023] [Indexed: 11/30/2023] Open
Abstract
The heterogeneity of functional cardiomyocytes arises during heart development, which is essential to the complex and highly coordinated cardiac physiological function. Yet the biological and physiological identities and the origin of the specialized cardiomyocyte populations have not been fully comprehended. Here we report a previously unrecognised population of cardiomyocytes expressing Dbhgene encoding dopamine beta-hydroxylase in murine heart. We determined how these myocytes are distributed across the heart by utilising advanced single-cell and spatial transcriptomic analyses, genetic fate mapping and molecular imaging with computational reconstruction. We demonstrated that they form the key functional components of the cardiac conduction system by using optogenetic electrophysiology and conditional cardiomyocyte Dbh gene deletion models. We revealed their close relationship with sympathetic innervation during cardiac conduction system formation. Our study thus provides new insights into the development and heterogeneity of the mammalian cardiac conduction system by revealing a new cardiomyocyte population with potential catecholaminergic endocrine function.
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Affiliation(s)
- Tianyi Sun
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | | | - Zhaoli Pu
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yangpeng Li
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Huiying Ren
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yanru An
- BGI Research, Shenzhen, 518103, China
| | - Xinyu Guo
- BGI Research, Qingdao, 266555, China
| | - Wei Hu
- Department of Physics & Astronomy, The University of Manchester, Brunswick Street, Manchester, M13 9PL, UK
| | - Ying Liu
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Yuqing Zheng
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Zhu Liu
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Kun Kou
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xianhong Ou
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Tangting Chen
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xuehui Fan
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yangyang Liu
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Shu Tu
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Yu He
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Yue Ren
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK
| | - Ao Chen
- BGI Research, Shenzhen, 518103, China
| | | | - Zhidao Xia
- Centre for Nanohealth, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Lucile Miquerol
- Aix Marseille University, CNRS Institut de Biologie du Développement de Marseille UMR 7288, 13288, Marseille, France
| | - Nicola Smart
- Department of Physiology, Anatomy & Genetics, Sherrington Building, Oxford, University of, Oxford, OX1 3PT, UK
| | - Henggui Zhang
- Department of Physics & Astronomy, The University of Manchester, Brunswick Street, Manchester, M13 9PL, UK
- Beijing Academy of Artificial Intelligence, 100084, Beijing, China
| | - Xiaoqiu Tan
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China.
- Department of Cardiology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China.
- Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan, 646000, China.
| | - Weinian Shou
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA.
| | - Ming Lei
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, UK.
- Key Laboratory of Medical Electrophysiology of the Ministry of Education, and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China.
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Schunke KJ, Rodriguez J, Dyavanapalli J, Schloen J, Wang X, Escobar J, Kowalik G, Cheung EC, Ribeiro C, Russo R, Alber BR, Dergacheva O, Chen SW, Murillo-Berlioz AE, Lee KB, Trachiotis G, Entcheva E, Brantner CA, Mendelowitz D, Kay MW. Outcomes of hypothalamic oxytocin neuron-driven cardioprotection after acute myocardial infarction. Basic Res Cardiol 2023; 118:43. [PMID: 37801130 PMCID: PMC10558415 DOI: 10.1007/s00395-023-01013-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/07/2023]
Abstract
Altered autonomic balance is a hallmark of numerous cardiovascular diseases, including myocardial infarction (MI). Although device-based vagal stimulation is cardioprotective during chronic disease, a non-invasive approach to selectively stimulate the cardiac parasympathetic system immediately after an infarction does not exist and is desperately needed. Cardiac vagal neurons (CVNs) in the brainstem receive powerful excitation from a population of neurons in the paraventricular nucleus (PVN) of the hypothalamus that co-release oxytocin (OXT) and glutamate to excite CVNs. We tested if chemogenetic activation of PVN-OXT neurons following MI would be cardioprotective. The PVN of neonatal rats was transfected with vectors to selectively express DREADDs within OXT neurons. At 6 weeks of age, an MI was induced and DREADDs were activated with clozapine-N-oxide. Seven days following MI, patch-clamp electrophysiology confirmed the augmented excitatory neurotransmission from PVN-OXT neurons to downstream nuclei critical for parasympathetic activity with treatment (43.7 ± 10 vs 86.9 ± 9 pA; MI vs. treatment), resulting in stark improvements in survival (85% vs. 95%; MI vs. treatment), inflammation, fibrosis assessed by trichrome blue staining, mitochondrial function assessed by Seahorse assays, and reduced incidence of arrhythmias (50% vs. 10% cumulative incidence of ventricular fibrillation; MI vs. treatment). Myocardial transcriptomic analysis provided molecular insight into potential cardioprotective mechanisms, which revealed the preservation of beneficial signaling pathways, including muscarinic receptor activation, in treated animals. These comprehensive results demonstrate that the PVN-OXT network could be a promising therapeutic target to quickly activate beneficial parasympathetic-mediated cellular pathways within the heart during the early stages of infarction.
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Affiliation(s)
- Kathryn J Schunke
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA.
- Department of Anatomy, Biochemistry and Physiology, University of Hawaii, 651 Ilalo St, Honolulu, HI, BSB 211 96813, USA.
| | - Jeannette Rodriguez
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Jhansi Dyavanapalli
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA
| | - John Schloen
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Xin Wang
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA
| | - Joan Escobar
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA
| | - Grant Kowalik
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Emily C Cheung
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Caitlin Ribeiro
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA
| | - Rebekah Russo
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Bridget R Alber
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Olga Dergacheva
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA
| | - Sheena W Chen
- Division of Cardiothoracic Surgery and Cardiothoracic Research, Veterans Affairs Medical Center, 50 Irving St. NW, Washington, DC, 20422, USA
| | - Alejandro E Murillo-Berlioz
- Division of Cardiothoracic Surgery and Cardiothoracic Research, Veterans Affairs Medical Center, 50 Irving St. NW, Washington, DC, 20422, USA
| | - Kyongjune B Lee
- Division of Cardiothoracic Surgery and Cardiothoracic Research, Veterans Affairs Medical Center, 50 Irving St. NW, Washington, DC, 20422, USA
| | - Gregory Trachiotis
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
- Division of Cardiothoracic Surgery and Cardiothoracic Research, Veterans Affairs Medical Center, 50 Irving St. NW, Washington, DC, 20422, USA
| | - Emilia Entcheva
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA
| | - Christine A Brantner
- The GWU Nanofabrication and Imaging Center, 800 22nd Street NW, Washington, DC, 20052, USA
| | - David Mendelowitz
- Department of Pharmacology and Physiology, George Washington University, Suite 640 Ross Hall, 2300 Eye St. NW, Washington, DC, 20052, USA.
| | - Matthew W Kay
- Department of Biomedical Engineering, George Washington University, Suite 5000 Science and Engineering Hall, 800 22nd Street NW, Washington, DC, 20052, USA.
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9
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Kaplan A, Lakkis B, El-Samadi L, Karaayvaz EB, Booz GW, Zouein FA. Cooling Down Inflammation in the Cardiovascular System via the Nicotinic Acetylcholine Receptor. J Cardiovasc Pharmacol 2023; 82:241-265. [PMID: 37539950 DOI: 10.1097/fjc.0000000000001455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/06/2023] [Indexed: 08/05/2023]
Abstract
ABSTRACT Inflammation is a major player in many cardiovascular diseases including hypertension, atherosclerosis, myocardial infarction, and heart failure. In many individuals, these conditions coexist and mutually exacerbate each other's progression. The pathophysiology of these diseases entails the active involvement of both innate and adaptive immune cells. Immune cells that possess the α7 subunit of the nicotinic acetylcholine receptor on their surface have the potential to be targeted through both pharmacological and electrical stimulation of the cholinergic system. The cholinergic system regulates the inflammatory response to various stressors in different organ systems by systematically suppressing spleen-derived monocytes and chemokines and locally improving immune cell function. Research on the cardiovascular system has demonstrated the potential for atheroma plaque stabilization and regression as favorable outcomes. Smaller infarct size and reduced fibrosis have been associated with improved cardiac function and a decrease in adverse cardiac remodeling. Furthermore, enhanced electrical stability of the myocardium can lead to a reduction in the incidence of ventricular tachyarrhythmia. In addition, improving mitochondrial dysfunction and decreasing oxidative stress can result in less myocardial tissue damage caused by reperfusion injury. Restoring baroreflex activity and reduction in renal damage can promote blood pressure regulation and help counteract hypertension. Thus, the present review highlights the potential of nicotinic acetylcholine receptor activation as a natural approach to alleviate the adverse consequences of inflammation in the cardiovascular system.
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Affiliation(s)
- Abdullah Kaplan
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- Department of Cardiology, Kemer Public Hospital, Kemer, Antalya, Turkey
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
| | - Bachir Lakkis
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Lana El-Samadi
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Ekrem Bilal Karaayvaz
- Department of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - George W Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
| | - Fouad A Zouein
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
- Department of Signaling and Cardiovascular Pathophysiology, UMR-S 1180, Inserm, Université Paris-Saclay, France
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10
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Spinal Cord Stimulation Attenuates Neural Remodeling, Inflammation, and Fibrosis After Myocardial Infarction. Neuromodulation 2023; 26:57-67. [PMID: 35088742 DOI: 10.1016/j.neurom.2021.09.005] [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: 09/24/2021] [Revised: 10/22/2020] [Accepted: 09/28/2021] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Spinal cord stimulation (SCS) is an established neuromodulation method that regulates the cardiac autonomic system. However, the biological mechanisms of the therapeutic effects of SCS after myocardial infarction (MI) remain unclear. MATERIALS AND METHODS Twenty-five rabbits were divided into five groups: SCS-MI (voltage: 0.5 v; pulse width: 0.2 ms; 50 Hz; ten minutes on and 30 minutes off; two weeks; n = 5), MI (n = 5), sham SCS-MI (voltage: 0 v; two weeks; n = 5), sham MI (n = 5), and blank control (n = 5) groups. MI was induced by permanent left anterior descending artery ligation. SCS-MI and sham SCS-MI rabbits received the corresponding interventions 24 hours after MI. Autonomic remodeling was evaluated using enzyme-linked immunosorbent assay and immunohistochemistry. Inflammation and myocardial fibrosis were assessed using immunohistochemistry, quantitative polymerase chain reaction, hematoxylin and eosin staining, Masson staining, and Western blot. RESULTS SCS improved the abnormal systemic autonomic activity. Cardiac norepinephrine decreased after MI (p < 0.01) and did not improve with SCS. Cardiac acetylcholine increased with SCS compared with the MI group (p < 0.05). However, no difference was observed between the MI and blank control groups. Growth-associated protein 43 (p < 0.001) and tyrosine hydroxylase (p < 0.001) increased whereas choline acetyltransferase (p < 0.05) decreased in the MI group compared with the blank control group. These changes were attenuated with SCS. SCS inhibited inflammation, decreased the ratio of phosphorylated-Erk to Erk (p < 0.001), and increased the ratio of phosphorylated-STAT3 to STAT3 (p < 0.001) compared with the MI group. Myocardial fibrosis was also attenuated by SCS. CONCLUSIONS SCS improved abnormal autonomic activity after MI, leading to reduced inflammation, reactivation of STAT3, and inhibition of Erk. Additionally, SCS attenuated myocardial fibrosis. Our results warrant future studies of biological mechanisms of the therapeutic effects of SCS after MI.
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11
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Minassa VS, Aitken AV, Hott SC, de Sousa GJ, Batista TJ, Gonçalves RDCR, Coitinho JB, Paton JFR, Beijamini V, Bissoli NS, Sampaio KN. Intermittent exposure to chlorpyrifos results in cardiac hypertrophy and oxidative stress in rats. Toxicology 2022; 482:153357. [PMID: 36341877 DOI: 10.1016/j.tox.2022.153357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/28/2022] [Accepted: 10/24/2022] [Indexed: 11/05/2022]
Abstract
Forbidden in some countries due to its proven toxicity to humans, chlorpyrifos (CPF) still stands as an organophosphate pesticide (OP) highly used worldwide. Cardiotoxicity assessment is an unmet need in pesticide regulation and should be deeply studied through different approaches to better inform and generate an appropriate regulatory response to OP use. In the present study, we used our 4-week intermittent OP exposure model in rats to address the CPF effects on cardiac morphology allied with cardiovascular functional and biomolecular evaluation. Rats were intermittently treated with CPF at doses of 7 mg/kg and 10 mg/kg or saline (i.p.) and assessed for cardiac morphology (cardiomyocyte diameter and collagen content), cardiopulmonary Bezold-Jarisch reflex (BJR) function, cardiac autonomic tone, left ventricle (LV) contractility, cardiac expression of NADPH oxidase (Nox2), catalase (CAT), superoxide dismutase 1 (SOD1), superoxide dismutase 2 (SOD2) and cardiac levels of advanced oxidation protein products (AOPP) and thiobarbituric acid reactive substances (TBARS). Plasma butyrylcholinesterase (BuChE) and brainstem acetylcholinesterase (AChE) were also measured. Intermittent exposure to CPF induced cardiac hypertrophy, increasing cardiomyocyte diameter and collagen content. An impairment of cardioinhibitory BJR responses and an increase in cardiac vagal tone were also observed in CPF-treated animals without changes in LV contractility. CPF exposure increased cardiac Nox-2, CAT, SOD1, and TBARS levels and inhibited plasma BuChE and brainstem AChE activities. Our data showed that intermittent exposure to CPF induces cardiac hypertrophy together with cardiovascular reflex impairment, imbalance of autonomic tone and oxidative stress, which may bring significant cardiovascular risk to individuals exposed to OP compounds seasonally.
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Affiliation(s)
- Vítor Sampaio Minassa
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Andrew Vieira Aitken
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Sara Cristina Hott
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Glauciene Januário de Sousa
- Postgraduate Program in Physiological Sciences, Department of Physiology, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Thatiany Jardim Batista
- Postgraduate Program in Physiological Sciences, Department of Physiology, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Rita de Cássia Ribeiro Gonçalves
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Juliana Barbosa Coitinho
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil; Postgraduate Program in Biochemistry, Department of Physiology, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Julian Francis Richmond Paton
- The Centre for Heart Research - Manaaki Mānawa, Department of Physiology, Faculty of Health & Medical Sciences, University of Auckland, Grafton Campus, Auckland 1023, New Zealand
| | - Vanessa Beijamini
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Nazaré Souza Bissoli
- Postgraduate Program in Physiological Sciences, Department of Physiology, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Karla Nívea Sampaio
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil.
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12
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Butova X, Myachina T, Simonova R, Kochurova A, Bozhko Y, Arkhipov M, Solovyova O, Kopylova G, Shchepkin D, Khokhlova A. Peculiarities of the Acetylcholine Action on the Contractile Function of Cardiomyocytes from the Left and Right Atria in Rats. Cells 2022; 11:cells11233809. [PMID: 36497067 PMCID: PMC9737865 DOI: 10.3390/cells11233809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022] Open
Abstract
Acetylcholine (ACh) is the neurotransmitter of the parasympathetic nervous system that modulates cardiac function, and its high concentrations may induce atrial fibrillation. We compared the ACh action on the mechanical function of single cardiomyocytes from the left atria (LA) and the right atria (RA). We exposed single rat LA and RA cardiomyocytes to 1, 10, and 100 µM ACh for 10-15 min and measured the parameters of sarcomere shortening-relengthening and cytosolic calcium ([Ca2+]i) transients during cell contractions. We also studied the effects of ACh on cardiac myosin function using an in vitro motility assay and analyzed the phosphorylation level of sarcomeric proteins. In LA cardiomyocytes, ACh decreased the time to peak sarcomere shortening, time to 50% relengthening, and time to peak [Ca2+]i transients. In RA cardiomyocytes, ACh affected the time of shortening and relengthening only at 10 µM. In the in vitro motility assay, ACh reduced to a greater extent the sliding velocity of F-actin over myosin from LA cardiomyocytes, which was accompanied by a more pronounced decrease in phosphorylation of the myosin regulatory light chain (RLC) in LA cardiomyocytes than in RA cardiomyocytes. Our findings indicate that ACh plays an important role in modulating the contractile function of LA and RA, provoking more pronounced changes in the time course of sarcomere shortening-relengthening and the kinetics of actin-myosin interaction in LA cardiomyocytes.
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Affiliation(s)
- Xenia Butova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Tatiana Myachina
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Raisa Simonova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Anastasia Kochurova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Yakov Bozhko
- Department of Therapy, Ural State Medical University, Repina Str. 3, 620028 Yekaterinburg, Russia
| | - Michael Arkhipov
- Department of Therapy, Ural State Medical University, Repina Str. 3, 620028 Yekaterinburg, Russia
| | - Olga Solovyova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
- Institute of Natural Sciences and Mathematics, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia
| | - Galina Kopylova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Daniil Shchepkin
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
| | - Anastasia Khokhlova
- Institute of Immunology and Physiology, Russian Academy of Sciences, Pervomajskaya Str. 106, 620049 Yekaterinburg, Russia
- Institute of Natural Sciences and Mathematics, Ural Federal University, Mira 19, 620002 Yekaterinburg, Russia
- Correspondence:
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13
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Prathumsap N, Ongnok B, Khuanjing T, Arinno A, Maneechote C, Apaijai N, Chunchai T, Arunsak B, Shinlapawittayatorn K, Chattipakorn SC, Chattipakorn N. Acetylcholine receptor agonists provide cardioprotection in doxorubicin-induced cardiotoxicity via modulating muscarinic M 2 and α7 nicotinic receptor expression. Transl Res 2022; 243:33-51. [PMID: 34920165 DOI: 10.1016/j.trsl.2021.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/17/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
The balance between cardiac sympathetic and parasympathetic activities has been intricately linked to mitochondrial function, cellular oxidative status, and immunomodulation in healthy and diseased myocardium. Cardiac autonomic neuropathy, along with the associated mitochondrial and cellular dysfunction, is an important pathophysiological feature of doxorubicin-induced cardiotoxicity (DIC). We tested the hypothesis that autonomic modulation by activation of acetylcholine receptors (AChR) effectively attenuates DIC. Rats were divided into control (0.9% sodium chloride solution) and doxorubicin groups (DOX, 3 mg/kg/d, 6 doses). Rats in the DOX group were equally subdivided into 4 interventional groups and treated for 30 days: vehicle, α7 nicotinic receptor agonist (PNU: PNU-282987, 3 mg/kg/d), muscarinic receptor agonist (BET: bethanechol, 12 mg/kg/d), and combined α7nAChR and mAChR agonists group (COM). Cardiac biochemical and functional analyses were done. The results show that AChR agonists protected the heart against DIC via improving mitochondrial and cardiac function, which was accompanied by reducing mitochondrial oxidative damage, apoptosis, and inflammation. Strikingly, PNU and BET exerted cardioprotection through different molecular pathways. PNU-mediated α7nAChR activation promoted mitochondrial fusion via upregulation of Mfn1-2 and attenuated DOX-induced autophagy. Contrarily, activation of mAChR by BET attenuated mitochondrial fission and mitophagy. The in vitro experiments confirmed the cytoprotective effects of AChR activation in DOX-treated H9c2 cells without compromising the anticancer effect of DOX in cancer cells. In conclusion, α7nAChR and mAChR agonists exerted cardioprotection against DIC via rebalancing autonomic function, improving mitochondrial function, reducing oxidative stress, and decreased cardiomyocyte apoptosis and inflammation, leading to improved cardiac function.
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Affiliation(s)
- Nanthip Prathumsap
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Benjamin Ongnok
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Thawatchai Khuanjing
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Apiwan Arinno
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Chayodom Maneechote
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Nattayaporn Apaijai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Titikorn Chunchai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Busarin Arunsak
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Krekwit Shinlapawittayatorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand; Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, Thailand.
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14
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Guimaraes DA, Aquino NSS, Rocha-Resende C, Jesus ICG, Silva MM, Scalzo SA, Fonseca RC, Durand MT, Pereira V, Tezini GCSV, Oliveira A, Prado VF, Stefanon I, Salgado HC, Prado MAM, Szawka RE, Guatimosim S. Neuronal cholinergic signaling constrains norepinephrine activity in the heart. Am J Physiol Cell Physiol 2022; 322:C794-C801. [PMID: 35264016 DOI: 10.1152/ajpcell.00031.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It is well known that cholinergic hypofunction contributes to cardiac pathology; yet, the mechanisms involved remain unclear. Our previous publication has shown that genetically engineered model of cholinergic deficit, the vesicular acetylcholine transporter knockdown homozygous (VAChT KDHOM) mice exhibit pathological cardiac remodeling and a gradual increase in cardiac mass with aging. Given that an increase in cardiac mass is often caused by adrenergic hyperactivity, we hypothesized that VAChT KDHOM mice might have an increase in cardiac norepinephrine (NE) levels. We thus investigated the temporal changes in NE content in the heart from 3, 6 and 12 month-old VAChT mutants. Interestingly, mice with cholinergic hypofunction showed a gradual elevation in cardiac NE content, which was already increased at 6 months of age. Consistent with this finding, 6 month-old VAChT KDHOM mice showed enhanced sympathetic activity and a greater abundance of tyrosine hydroxylase positive sympathetic nerves in the heart. VAChT mutants exhibited an increase in peak calcium transient, and mitochondrial oxidative stress in cardiomyocytes along with enhanced GRK5 and NFAT staining in the heart. These are known targets of adrenergic signaling in the cell. Moreover, vagotomized-mice displayed an increase in cardiac NE content confirming the data obtained in VAChT KDHOM mice. Establishing a causal relationship between acetylcholine and NE, VAChT KDHOM mice treated with pyridostigmine, a cholinesterase inhibitor, showed reduced cardiac NE content, rescuing the phenotype. Our findings unveil a yet unrecognized role of cholinergic signaling as a modulator of cardiac NE, providing novel insights into the mechanisms that drive autonomic imbalance.
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Affiliation(s)
- Diogo A Guimaraes
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Nayara S S Aquino
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Cibele Rocha-Resende
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Itamar C G Jesus
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mário Morais Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sergio A Scalzo
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberta Cristelli Fonseca
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marina T Durand
- Universidade de Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil
| | - Vanessa Pereira
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - André Oliveira
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vânia F Prado
- Robarts Research Institute, The University of Western Ontario, Department of Physiology 1and Pharmacology, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Ivanita Stefanon
- Department of Physiological Sciences, Universidade Federal do Espírito Santo, Vitória, Espirito Santo, Brazil
| | - Helio C Salgado
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marco Antonio Máximo Prado
- Robarts Research Institute, The University of Western Ontario, Department of Physiology 1and Pharmacology, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Raphael E Szawka
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Silvia Guatimosim
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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15
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RGS3L allows for an M 2 muscarinic receptor-mediated RhoA-dependent inotropy in cardiomyocytes. Basic Res Cardiol 2022; 117:8. [PMID: 35230541 PMCID: PMC8888479 DOI: 10.1007/s00395-022-00915-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 01/31/2023]
Abstract
The role and outcome of the muscarinic M2 acetylcholine receptor (M2R) signaling in healthy and diseased cardiomyocytes is still a matter of debate. Here, we report that the long isoform of the regulator of G protein signaling 3 (RGS3L) functions as a switch in the muscarinic signaling, most likely of the M2R, in primary cardiomyocytes. High levels of RGS3L, as found in heart failure, redirect the Gi-mediated Rac1 activation into a Gi-mediated RhoA/ROCK activation. Functionally, this switch resulted in a reduced production of reactive oxygen species (- 50%) in cardiomyocytes and an inotropic response (+ 18%) in transduced engineered heart tissues. Importantly, we could show that an adeno-associated virus 9-mediated overexpression of RGS3L in rats in vivo, increased the contractility of ventricular strips by maximally about twofold. Mechanistically, we demonstrate that this switch is mediated by a complex formation of RGS3L with the GTPase-activating protein p190RhoGAP, which balances the activity of RhoA and Rac1 by altering its substrate preference in cardiomyocytes. Enhancement of this complex formation could open new possibilities in the regulation of the contractility of the diseased heart.
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Schledwitz A, Sundel MH, Alizadeh M, Hu S, Xie G, Raufman JP. Differential Actions of Muscarinic Receptor Subtypes in Gastric, Pancreatic, and Colon Cancer. Int J Mol Sci 2021; 22:ijms222313153. [PMID: 34884958 PMCID: PMC8658119 DOI: 10.3390/ijms222313153] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
Cancers arising from gastrointestinal epithelial cells are common, aggressive, and difficult to treat. Progress in this area resulted from recognizing that the biological behavior of these cancers is highly dependent on bioactive molecules released by neurocrine, paracrine, and autocrine mechanisms within the tumor microenvironment. For many decades after its discovery as a neurotransmitter, acetylcholine was thought to be synthesized and released uniquely from neurons and considered the sole physiological ligand for muscarinic receptor subtypes, which were believed to have similar or redundant actions. In the intervening years, we learned this former dogma is not tenable. (1) Acetylcholine is not produced and released only by neurons. The cellular machinery required to synthesize and release acetylcholine is present in immune, cancer, and other cells, as well as in lower organisms (e.g., bacteria) that inhabit the gut. (2) Acetylcholine is not the sole physiological activator of muscarinic receptors. For example, selected bile acids can modulate muscarinic receptor function. (3) Muscarinic receptor subtypes anticipated to have overlapping functions based on similar G protein coupling and downstream signaling may have unexpectedly diverse actions. Here, we review the relevant research findings supporting these conclusions and discuss how the complexity of muscarinic receptor biology impacts health and disease, focusing on their role in the initiation and progression of gastric, pancreatic, and colon cancers.
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Affiliation(s)
- Alyssa Schledwitz
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (A.S.); (M.A.); (S.H.); (G.X.)
| | - Margaret H. Sundel
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA;
| | - Madeline Alizadeh
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (A.S.); (M.A.); (S.H.); (G.X.)
- The Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Shien Hu
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (A.S.); (M.A.); (S.H.); (G.X.)
- VA Maryland Healthcare System, Baltimore, MD 21201, USA
| | - Guofeng Xie
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (A.S.); (M.A.); (S.H.); (G.X.)
- VA Maryland Healthcare System, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Jean-Pierre Raufman
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (A.S.); (M.A.); (S.H.); (G.X.)
- VA Maryland Healthcare System, Baltimore, MD 21201, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Correspondence: ; Tel.: +1-410-328-8728
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17
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Long-term endogenous acetylcholine deficiency potentiates pulmonary inflammation in a murine model of elastase-induced emphysema. Sci Rep 2021; 11:15918. [PMID: 34354132 PMCID: PMC8342425 DOI: 10.1038/s41598-021-95211-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 07/19/2021] [Indexed: 02/07/2023] Open
Abstract
Acetylcholine (ACh), the neurotransmitter of the cholinergic system, regulates inflammation in several diseases including pulmonary diseases. ACh is also involved in a non-neuronal mechanism that modulates the innate immune response. Because inflammation and release of pro-inflammatory cytokines are involved in pulmonary emphysema, we hypothesized that vesicular acetylcholine transport protein (VAChT) deficiency, which leads to reduction in ACh release, can modulate lung inflammation in an experimental model of emphysema. Mice with genetical reduced expression of VAChT (VAChT KDHOM 70%) and wild-type mice (WT) received nasal instillation of 50 uL of porcine pancreatic elastase (PPE) or saline on day 0. Twenty-eight days after, animals were evaluated. Elastase instilled VAChT KDHOM mice presented an increase in macrophages, lymphocytes, and neutrophils in bronchoalveolar lavage fluid and MAC2-positive macrophages in lung tissue and peribronchovascular area that was comparable to that observed in WT mice. Conversely, elastase instilled VAChT KDHOM mice showed significantly larger number of NF-κB-positive cells and isoprostane staining in the peribronchovascular area when compared to elastase-instilled WT-mice. Moreover, elastase-instilled VAChT-deficient mice showed increased MCP-1 levels in the lungs. Other cytokines, extracellular matrix remodeling, alveolar enlargement, and lung function were not worse in elastase-instilled VAChT deficiency than in elastase-instilled WT-controls. These data suggest that decreased VAChT expression may contribute to the pathogenesis of emphysema, at least in part, through NF-κB activation, MCP-1, and oxidative stress pathways. This study highlights novel pathways involved in lung inflammation that may contribute to the development of chronic obstrutive lung disease (COPD) in cholinergic deficient individuals such as Alzheimer's disease patients.
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18
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Pinheiro NM, Banzato R, Tibério I, Prado MAM, Prado VF, Hamouda AK, Prado CM. Acute Lung Injury in Cholinergic-Deficient Mice Supports Anti-Inflammatory Role of α7 Nicotinic Acetylcholine Receptor. Int J Mol Sci 2021; 22:ijms22147552. [PMID: 34299169 PMCID: PMC8303767 DOI: 10.3390/ijms22147552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022] Open
Abstract
(1) Background: The lung cholinergic pathway is important for controlling pulmonary inflammation in acute lung injury, a condition that is characterized by a sudden onset and intense inflammation. This study investigated changes in the expression levels of nicotinic and muscarinic acetylcholine receptors (nAChR and mAChR) in the lung during acute lung injury. (2) Methods: acute lung injury (ALI) was induced in wild-type and cholinergic-deficient (VAChT-KDHOM) mice using intratracheal lipopolysaccharide (LPS) instillation with or without concurrent treatment with nicotinic ligands. Bronchoalveolar lavage fluid was collected to evaluate markers of inflammation, and then the lung was removed and processed for isolation of membrane fraction and determination of acetylcholine receptors level using radioligand binding assays. (3) Results: LPS-induced increase in lung inflammatory markers (e.g., neutrophils and IL-1β) was significantly higher in VAChT-KDHOM than wild-type mice. In contrast, LPS treatment resulted in a significant increase in lung’s α7 nicotinic receptor level in wild-type, but not in VAChT-KDHOM mice. However, treatment with PNU 282987, a selective α7 nicotinic receptor agonist, restored VAChT-KDHOM mice’s ability to increase α7 nicotinic receptor levels in response to LPS-induced acute lung injury and reduced lung inflammation. LPS also increased muscarinic receptors level in VAChT-KDHOM mice, and PNU 282987 treatment reduced this response. (4) Conclusions: Our data indicate that the anti-inflammatory effects of the lung cholinergic system involve an increase in the level of α7 nicotinic receptors. Pharmacological agents that increase the expression or the function of lung α7 nicotinic receptors have potential clinical uses for treating acute lung injury.
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Affiliation(s)
- Nathalia M. Pinheiro
- Department of Bioscience, Federal University of Sao Paulo, Santos 11015-020, SP, Brazil;
- College of Pharmacy, University of Texas at Tyler, Tyler, TX 75799, USA;
| | - Rosana Banzato
- Department of Medicine, School of Medicine, University of Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (R.B.); (I.T.); (V.F.P.)
| | - Iolanda Tibério
- Department of Medicine, School of Medicine, University of Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (R.B.); (I.T.); (V.F.P.)
| | - Marco A. M. Prado
- Molecular Medicine Group, Robarts Research Institute, London, ON N6A 5B7, Canada;
- Department of Physiology & Pharmacology, University of Western Ontario, London, ON N6A 5B7, Canada
- Department of Anatomy & Cell Biology, University of Western Ontario, London, ON N6A 5B7, Canada
| | - Vânia F. Prado
- Department of Medicine, School of Medicine, University of Sao Paulo, Sao Paulo 01246-903, SP, Brazil; (R.B.); (I.T.); (V.F.P.)
- Molecular Medicine Group, Robarts Research Institute, London, ON N6A 5B7, Canada;
| | - Ayman K. Hamouda
- College of Pharmacy, University of Texas at Tyler, Tyler, TX 75799, USA;
| | - Carla M. Prado
- Department of Bioscience, Federal University of Sao Paulo, Santos 11015-020, SP, Brazil;
- Correspondence: ; Tel.: +55-13-3229-0118
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19
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Cavalcante GL, Brognara F, Oliveira LVDC, Lataro RM, Durand MDT, Oliveira AP, Nóbrega ACL, Salgado HC, Sabino JPJ. Benefits of pharmacological and electrical cholinergic stimulation in hypertension and heart failure. Acta Physiol (Oxf) 2021; 232:e13663. [PMID: 33884761 DOI: 10.1111/apha.13663] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/12/2021] [Accepted: 04/06/2021] [Indexed: 12/11/2022]
Abstract
Systemic arterial hypertension and heart failure are cardiovascular diseases that affect millions of individuals worldwide. They are characterized by a change in the autonomic nervous system balance, highlighted by an increase in sympathetic activity associated with a decrease in parasympathetic activity. Most therapeutic approaches seek to treat these diseases by medications that attenuate sympathetic activity. However, there is a growing number of studies demonstrating that the improvement of parasympathetic function, by means of pharmacological or electrical stimulation, can be an effective tool for the treatment of these cardiovascular diseases. Therefore, this review aims to describe the advances reported by experimental and clinical studies that addressed the potential of cholinergic stimulation to prevent autonomic and cardiovascular imbalance in hypertension and heart failure. Overall, the published data reviewed demonstrate that the use of central or peripheral acetylcholinesterase inhibitors is efficient to improve the autonomic imbalance and hemodynamic changes observed in heart failure and hypertension. Of note, the baroreflex and the vagus nerve activation have been shown to be safe and effective approaches to be used as an alternative treatment for these cardiovascular diseases. In conclusion, pharmacological and electrical stimulation of the parasympathetic nervous system has the potential to be used as a therapeutic tool for the treatment of hypertension and heart failure, deserving to be more explored in the clinical setting.
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Affiliation(s)
- Gisele L. Cavalcante
- Graduate Program in Pharmaceutical Sciences Department of Biophysics and Physiology Federal University of Piaui Teresina PI Brazil
- Department of Pharmacology Ribeirão Preto Medical School University of São Paulo Ribeirão Preto SP Brazil
| | - Fernanda Brognara
- Department of Physiology Ribeirão Preto Medical School University of São Paulo Ribeirão Preto SP Brazil
| | - Lucas Vaz de C. Oliveira
- Graduate Program in Pharmaceutical Sciences Department of Biophysics and Physiology Federal University of Piaui Teresina PI Brazil
| | - Renata M. Lataro
- Department of Physiological Sciences Center of Biological Sciences Federal University of Santa Catarina Florianópolis SP Brazil
| | | | - Aldeidia P. Oliveira
- Graduate Program in Pharmacology Department of Biophysics and Physiology Federal University of Piaui Teresina PI Brazil
| | | | - Helio C. Salgado
- Department of Physiology Ribeirão Preto Medical School University of São Paulo Ribeirão Preto SP Brazil
| | - João Paulo J. Sabino
- Graduate Program in Pharmaceutical Sciences Department of Biophysics and Physiology Federal University of Piaui Teresina PI Brazil
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20
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Vang A, da Silva Gonçalves Bos D, Fernandez-Nicolas A, Zhang P, Morrison AR, Mancini TJ, Clements RT, Polina I, Cypress MW, Jhun BS, Hawrot E, Mende U, O-Uchi J, Choudhary G. α7 Nicotinic acetylcholine receptor mediates right ventricular fibrosis and diastolic dysfunction in pulmonary hypertension. JCI Insight 2021; 6:142945. [PMID: 33974567 PMCID: PMC8262476 DOI: 10.1172/jci.insight.142945] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 05/06/2021] [Indexed: 12/12/2022] Open
Abstract
Right ventricular (RV) fibrosis is a key feature of maladaptive RV hypertrophy and dysfunction and is associated with poor outcomes in pulmonary hypertension (PH). However, mechanisms and therapeutic strategies to mitigate RV fibrosis remain unrealized. Previously, we identified that cardiac fibroblast α7 nicotinic acetylcholine receptor (α7 nAChR) drives smoking-induced RV fibrosis. Here, we sought to define the role of α7 nAChR in RV dysfunction and fibrosis in the settings of RV pressure overload as seen in PH. We show that RV tissue from PH patients has increased collagen content and ACh expression. Using an experimental rat model of PH, we demonstrate that RV fibrosis and dysfunction are associated with increases in ACh and α7 nAChR expression in the RV but not in the left ventricle (LV). In vitro studies show that α7 nAChR activation leads to an increase in adult ventricular fibroblast proliferation and collagen content mediated by a Ca2+/epidermal growth factor receptor (EGFR) signaling mechanism. Pharmacological antagonism of nAChR decreases RV collagen content and improves RV function in the PH model. Furthermore, mice lacking α7 nAChR exhibit improved RV diastolic function and have lower RV collagen content in response to persistently increased RV afterload, compared with WT controls. These finding indicate that enhanced α7 nAChR signaling is an important mechanism underlying RV fibrosis and dysfunction, and targeted inhibition of α7 nAChR is a potentially novel therapeutic strategy in the setting of increased RV afterload.
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Affiliation(s)
- Alexander Vang
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA
| | - Denielli da Silva Gonçalves Bos
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Ana Fernandez-Nicolas
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Peng Zhang
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Alan R. Morrison
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Thomas J. Mancini
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA
| | - Richard T. Clements
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Biomedical & Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, USA
| | - Iuliia Polina
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Michael W. Cypress
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Bong Sook Jhun
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Edward Hawrot
- Department of Molecular Pharmacology, Physiology, and Biotechnology, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Ulrike Mende
- Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA.,Cardiovascular Research Center, Lifespan Cardiovascular Institute, Rhode Island Hospital, Providence, Rhode Island, USA
| | - Jin O-Uchi
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Gaurav Choudhary
- Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island, USA.,Department of Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, USA
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21
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Targosova K, Kucera M, Kilianova Z, Slobodova L, Szmicsekova K, Hrabovska A. Cardiac nicotinic receptors show β-subunit-dependent compensatory changes. Am J Physiol Heart Circ Physiol 2021; 320:H1975-H1984. [PMID: 33769917 DOI: 10.1152/ajpheart.00995.2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nicotinic receptors (NRs) play an important role in the cholinergic regulation of heart functions, and converging evidence suggests a diverse repertoire of NR subunits in the heart. A recent hypothesis about the plasticity of β NR subunits suggests that β2-subunits and β4-subunits may substitute for each other. In our study, we assessed the hypothetical β-subunit interchangeability in the heart at the level of mRNA. Using two mutant mice strains lacking β2 or β4 NR subunits, we examined the relative expression of NR subunits and other key cholinergic molecules. We investigated the physiology of isolated hearts perfused by Langendorff's method at basal conditions and after cholinergic and/or adrenergic stimulation. Lack of β2 NR subunit was accompanied with decreased relative expression of β4-subunits and α3-subunits. No other cholinergic changes were observed at the level of mRNA, except for increased M3 and decreased M4 muscarinic receptors. Isolated hearts lacking β2 NR subunit showed different dynamics in heart rate response to indirect cholinergic stimulation. In hearts lacking β4 NR subunit, increased levels of β2-subunits were observed together with decreased mRNA for acetylcholine-synthetizing enzyme and M1 and M4 muscarinic receptors. Changes in the expression levels in β4-/- hearts were associated with increased basal heart rate and impaired response to a high dose of acetylcholine upon adrenergic stimulation. In support of the proposed plasticity of cardiac NRs, our results confirmed subunit-dependent compensatory changes to missing cardiac NRs subunits with consequences on isolated heart physiology.NEW & NOTEWORTHY In the present study, we observed an increase in mRNA levels of the β2 NR subunit in β4-/- hearts but not vice versa, thus supporting the hypothesis of β NR subunit plasticity that depends on the specific type of missing β-subunit. This was accompanied with specific cholinergic adaptations. Nevertheless, isolated hearts of β4-/- mice showed increased basal heart rate and a higher sensitivity to a high dose of acetylcholine upon adrenergic stimulation.
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Affiliation(s)
- Katarina Targosova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Matej Kucera
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Zuzana Kilianova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Pharmacology, Slovak Medical University in Bratislava, Bratislava, Slovakia
| | - Lubica Slobodova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Pharmacology, Slovak Medical University in Bratislava, Bratislava, Slovakia
| | - Kristina Szmicsekova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Anna Hrabovska
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Pharmacology, Slovak Medical University in Bratislava, Bratislava, Slovakia.,Biomedical Research Centre, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
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22
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Santana FPR, Ricardo-da-Silva FY, Fantozzi ET, Pinheiro NM, Tibério IFLC, Moreira LFP, Prado MAM, Prado VF, Tavares-de-Lima W, Prado CM, Breithaupt-Faloppa AC. Lung Edema and Mortality Induced by Intestinal Ischemia and Reperfusion Is Regulated by VAChT Levels in Female Mice. Inflammation 2021; 44:1553-1564. [PMID: 33715111 DOI: 10.1007/s10753-021-01440-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/11/2020] [Accepted: 02/19/2021] [Indexed: 12/22/2022]
Abstract
Acute lung injury induced by intestinal ischemia/reperfusion (I/R) is a relevant clinical condition. Acetylcholine (ACh) and the α7 nicotinic ACh receptor (nAChRα-7) are involved in the control of inflammation. Mice with reduced levels of the vesicular ACh transporter (VAChT), a protein responsible for controlling ACh release, were used to test the involvement of cholinergic signaling in lung inflammation due to intestinal I/R. Female mice with reduced levels of VAChT (VAChT-KDHOM) or wild-type littermate controls (WT) were submitted to intestinal I/R followed by 2 h of reperfusion. Mortality, vascular permeability, and recruitment of inflammatory cells into the lung were investigated. Parts of mice were submitted to ovariectomy (OVx) to study the effect of sex hormones or treated with PNU-282,987 (nAChRα-7 agonist). A total of 43.4% of VAChT-KDHOM-I/R mice died in the reperfusion period compared to 5.2% of WT I/R mice. The I/R increased lung inflammation in both genotypes. In VAChT-KDHOM mice, I/R increased vascular permeability and decreased the release of cytokines in the lung compared to WT I/R mice. Ovariectomy reduced lung inflammation and permeability compared to non-OVx, but it did not avoid mortality in VAChT-KDHOM-I/R mice. PNU treatment reduced lung permeability, increased the release of proinflammatory cytokines and the myeloperoxidase activity in the lungs, and prevented the increased mortality observed in VAChT-KDHOM mice. Cholinergic signaling is an important component of the lung protector response against intestinal I/R injury. Decreased cholinergic signaling seems to increase pulmonary edema and dysfunctional cytokine release that increased mortality, which can be prevented by increasing activation of nAChRα-7.
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Affiliation(s)
- Fernanda P R Santana
- Department of Biological Science, Federal University of São Paulo, Diadema, Brazil
| | - Fernanda Y Ricardo-da-Silva
- Laboratorio de Cirurgia Cardiovascular e Fisiopatologia da Circulação (LIM-11), Instituto do Coração (InCor), Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Evelyn T Fantozzi
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Nathália M Pinheiro
- Department of Bioscience, Federal University of São Paulo, Campus Baixada Santista, Rua Silva Jardim, 136 - Vila Mathias, Santos, SP, Brazil
- Department of Internal Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Iolanda F L C Tibério
- Department of Internal Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Luiz Felipe Pinho Moreira
- Laboratorio de Cirurgia Cardiovascular e Fisiopatologia da Circulação (LIM-11), Instituto do Coração (InCor), Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marco Antônio M Prado
- Robarts Research Institute, Department of Physiology & Pharmacology, The University of Western Ontario, London, Canada
- Department of Anatomy & Cell Biology, The University of Western Ontario, London, Canada
| | - Vânia F Prado
- Robarts Research Institute, Department of Physiology & Pharmacology, The University of Western Ontario, London, Canada
- Department of Anatomy & Cell Biology, The University of Western Ontario, London, Canada
| | - Wothan Tavares-de-Lima
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Carla Máximo Prado
- Department of Biological Science, Federal University of São Paulo, Diadema, Brazil.
- Department of Bioscience, Federal University of São Paulo, Campus Baixada Santista, Rua Silva Jardim, 136 - Vila Mathias, Santos, SP, Brazil.
- Department of Internal Medicine, School of Medicine, University of São Paulo, São Paulo, Brazil.
| | - Ana Cristina Breithaupt-Faloppa
- Laboratorio de Cirurgia Cardiovascular e Fisiopatologia da Circulação (LIM-11), Instituto do Coração (InCor), Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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23
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Yang Y, Li Y, Wang J, Hong L, Qiao S, Wang C, An J. Cholinergic receptors play a role in the cardioprotective effects of anesthetic preconditioning: Roles of nitric oxide and the CaMKKβ/AMPK pathway. Exp Ther Med 2021; 21:137. [PMID: 33456504 PMCID: PMC7791965 DOI: 10.3892/etm.2020.9569] [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: 03/27/2020] [Accepted: 11/13/2020] [Indexed: 11/06/2022] Open
Abstract
Vagus nerve activation may have important therapeutic significance for myocardial ischemia-reperfusion (IR) injury. Nitric oxide (NO) plays a vital role in the cardioprotective effects of anesthetic preconditioning (APC). Moreover, acetylcholine (ACh) prevents cardiomyocyte damage by activating AMP-activated protein kinase (AMPK) and increasing the phosphorylation of Ca2+/calmodulin-dependent protein kinase β (CaMKKβ). The aim of the present study was to determine whether APC could protect heart function by antagonizing IR damage via the cholinergic system. It was hypothesized that the NO synthase (NOS)/CaMKKβ/AMPK pathway might be involved in the cardioprotective effects induced by cholinergic receptor activation. Isolated rat hearts were subjected to ischemia for 30 min followed by 120 min of reperfusion. Volatile anesthetic sevoflurane (3.5%) was administered for 15 min before ischemia, then rinsed for 15 min. The muscarinic acetylcholine receptor (mAChR) antagonist atropine (ATR; 100 nM) and the nicotinic acetylcholine receptor (nAChR) antagonist hexamethonium (HEM; 50 µM) were administered 10 min before APC. Both mAChR and nAChR were involved in APC-induced cardioprotection. ATR and HEM treatment both abolished the protective effects of APC on IR damage in isolated hearts, demonstrating the importance of cholinergic receptors in the protection mechanism of APC. The present study thus suggests that APC plays a cardioprotective role, in part, by regulating neurohumoral pathways. In addition, there may be functional coupling between the two cholinergic receptors, and the NOS and CaMKKβ/AMPK pathways may play roles in shared pathways that mediate the cardioprotective effects of APC. These findings may provide insight into potential new mechanisms of APC-induced cardioprotection against IR injury.
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Affiliation(s)
- Yang Yang
- Department of Anesthesiology, Wujiang Hospital Affiliated to Nantong University, Suzhou, Jiangsu 215200, P.R. China
| | - Ying Li
- Department of Cardiology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
| | - Jie Wang
- Department of Anesthesiology, Wujiang Hospital Affiliated to Nantong University, Suzhou, Jiangsu 215200, P.R. China
| | - Lei Hong
- Institute of Clinical Medicine Research, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
| | - Shigang Qiao
- Institute of Clinical Medicine Research, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
- Department of Anesthesiology and Perioperative Medicine, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
| | - Chen Wang
- Institute of Clinical Medicine Research, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
- Department of Anesthesiology and Perioperative Medicine, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
| | - Jianzhong An
- Institute of Clinical Medicine Research, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215153, P.R. China
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24
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Oikawa S, Kai Y, Mano A, Ohata H, Kurabayashi A, Tsuda M, Kakinuma Y. Non-neuronal cardiac acetylcholine system playing indispensable roles in cardiac homeostasis confers resiliency to the heart. J Physiol Sci 2021; 71:2. [PMID: 33461483 PMCID: PMC10717922 DOI: 10.1186/s12576-020-00787-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 12/07/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND We previously established that the non-neuronal cardiac cholinergic system (NNCCS) is equipped with cardiomyocytes synthesizes acetylcholine (ACh), which is an indispensable endogenous system, sustaining cardiac homeostasis and regulating an inflammatory status, by transgenic mice overexpressing choline acetyltransferase (ChAT) gene in the heart. However, whole body biological significances of NNCCS remain to be fully elucidated. METHODS AND RESULTS To consolidate the features, we developed heart-specific ChAT knockdown (ChATKD) mice using 3 ChAT-specific siRNAs. The mice developed cardiac dysfunction. Factors causing it included the downregulation of cardiac glucose metabolism along with decreased signal transduction of Akt/HIF-1alpha/GLUT4, leading to poor glucose utilization, impairment of glycolytic metabolites entering the tricarboxylic (TCA) cycle, the upregulation of reactive oxygen species (ROS) production with an attenuated scavenging potency, and the downregulated nitric oxide (NO) production via NOS1. ChATKD mice revealed a decreased vagus nerve activity, accelerated aggression, more accentuated blood basal corticosterone levels with depression-like phenotypes, several features of which were accompanied by cardiac dysfunction. CONCLUSION The NNCCS plays a crucial role in cardiac homeostasis by regulating the glucose metabolism, ROS synthesis, NO levels, and the cardiac vagus nerve activity. Thus, the NNCCS is suggested a fundamentally crucial system of the heart.
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Affiliation(s)
- Shino Oikawa
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Yuko Kai
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Asuka Mano
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Hisayuki Ohata
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Atsushi Kurabayashi
- Department of Pathology, Kochi Medical School, Nankoku, Kochi, 783-8505, Japan
| | - Masayuki Tsuda
- Institute for Laboratory Animal Research, Kochi Medical School, Nankoku, Kochi, 783-8505, Japan
| | - Yoshihiko Kakinuma
- Department of Bioregulatory Science (Physiology), Nippon Medical School, Graduate School of Medicine, Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan.
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25
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Kakinuma Y. Characteristic Effects of the Cardiac Non-Neuronal Acetylcholine System Augmentation on Brain Functions. Int J Mol Sci 2021; 22:ijms22020545. [PMID: 33430415 PMCID: PMC7826949 DOI: 10.3390/ijms22020545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/05/2021] [Accepted: 01/05/2021] [Indexed: 02/07/2023] Open
Abstract
Since the discovery of non-neuronal acetylcholine in the heart, this specific system has drawn scientific interest from many research fields, including cardiology, immunology, and pharmacology. This system, acquired by cardiomyocytes independent of the parasympathetic nervous system of the autonomic nervous system, helps us to understand unsolved issues in cardiac physiology and to realize that the system may be more pivotal for cardiac homeostasis than expected. However, it has been shown that the effects of this system may not be restricted to the heart, but rather extended to cover extra-cardiac organs. To this end, this system intriguingly influences brain function, specifically potentiating blood brain barrier function. Although the results reported appear to be unusual, this novel characteristic can provide us with another research interest and therapeutic application mode for central nervous system diseases. In this review, we discuss our recent studies and raise the possibility of application of this system as an adjunctive therapeutic modality.
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Affiliation(s)
- Yoshihiko Kakinuma
- Department of Bioregulatory Science, Graduate School of Medicine, Nippon Medical School, Tokyo 113-8602, Japan
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26
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Rocha-Resende C, da Silva AM, Prado MAM, Guatimosim S. Protective and anti-inflammatory effects of acetylcholine in the heart. Am J Physiol Cell Physiol 2020; 320:C155-C161. [PMID: 33264077 DOI: 10.1152/ajpcell.00315.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The innate and adaptive immune systems play an important role in the development of cardiac diseases. Therefore, it has become critical to identify molecules that can modulate inflammation in the injured heart. In this regard, activation of the cholinergic system in animal models of heart disease has been shown to exert protective actions that include immunomodulation of cardiac inflammation. In this mini-review, we briefly present our current understanding on the cardiac cellular sources of acetylcholine (ACh) (neuronal vs. nonneuronal), followed by a discussion on its contribution to the regulation of inflammatory cells. Although the mechanism behind ACh-mediated protection still remains to be fully elucidated, the beneficial immunomodulatory role of the cholinergic signaling emerges as a potential key regulator of cardiac inflammation.
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Affiliation(s)
- Cibele Rocha-Resende
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Aristóbolo Mendes da Silva
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Marco A M Prado
- Robarts Research Institute, Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, The University of Western Ontario, London, Ontario, Canada
| | - Silvia Guatimosim
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
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27
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Wang W, Xu H, Lin H, Molnar M, Ren H. The role of the cholinergic anti-inflammatory pathway in septic cardiomyopathy. Int Immunopharmacol 2020; 90:107160. [PMID: 33243604 DOI: 10.1016/j.intimp.2020.107160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 12/30/2022]
Abstract
Septic cardiomyopathy (SCM)is common in septic patients and results in cardiovascular failure. The pathogenesis of SCM is complicated, and patients with SCM have high mortality because current treatment methods are limited. The cholinergic anti-inflammatory pathway (CAP) modulates inflammatory responses through vagus nerve stimulation that leads to the release of acetylcholine (ACh), which binds to the alpha7 nicotinic acetylcholine receptor (α7nAChR). Moreover, α7nAChR activation by its agonists at the tissue level inhibits inflammatory mediators and regulates the function of immune cells in sepsis. Therefore, the α7nAChR can maintain balance of the inflammatory-immune response in sepsis. CAP has been elucidated as a critical regulator of anti-inflammation in many diseases, including rheumatoid arthritis, inflammatory boweldisease and SCM. Additionally, some clinical and preclinical trials show therapeutic potential via regulating CAP. There are excellent studies regarding the beneficial role of CAP activation, especially α7nAChR, in experimental SCM. This review aims to discuss the CAP in attenuating inflammation and the potential role of α7nAChR activation in regulating immune and reducing inflammation in SCM.
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Affiliation(s)
- Wenting Wang
- Department of Intensive Care Unit, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Hui Xu
- Department of Intensive Care Unit, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Huan Lin
- Department of Intensive Care Unit, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Megan Molnar
- College of Medicine, SUNY Upstate Medical University, Syracuse, USA.
| | - Hongsheng Ren
- Department of Intensive Care Unit, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
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28
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Luo B, Wu Y, Liu SL, Li XY, Zhu HR, Zhang L, Zheng F, Liu XY, Guo LY, Wang L, Song HX, Lv YX, Cheng ZS, Chen SY, Wang JN, Tang JM. Vagus nerve stimulation optimized cardiomyocyte phenotype, sarcomere organization and energy metabolism in infarcted heart through FoxO3A-VEGF signaling. Cell Death Dis 2020; 11:971. [PMID: 33184264 PMCID: PMC7665220 DOI: 10.1038/s41419-020-03142-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/30/2022]
Abstract
Vagus nerve stimulation (VNS) restores autonomic balance, suppresses inflammation action and minimizes cardiomyocyte injury. However, little knowledge is known about the VNS’ role in cardiomyocyte phenotype, sarcomere organization, and energy metabolism of infarcted hearts. VNS in vivo and acetylcholine (ACh) in vitro optimized the levels of α/β-MHC and α-Actinin positive sarcomere organization in cardiomyocytes while reducing F-actin assembly of cardiomyocytes. Consistently, ACh improved glucose uptake while decreasing lipid deposition in myocytes, correlating both with the increase of Glut4 and CPT1α and the decrease of PDK4 in infarcted hearts in vivo and myocytes in vitro, attributing to improvement in both glycolysis by VEGF-A and lipid uptake by VEGF-B in response to Ach. This led to increased ATP levels accompanied by the repaired mitochondrial function and the decreased oxygen consumption. Functionally, VNS improved the left ventricular performance. In contrast, ACh-m/nAChR inhibitor or knockdown of VEGF-A/B by shRNA powerfully abrogated these effects mediated by VNS. On mechanism, ACh decreased the levels of nuclear translocation of FoxO3A in myocytes due to phosphorylation of FoxO3A by activating AKT. FoxO3A overexpression or knockdown could reverse the specific effects of ACh on the expression of VEGF-A/B, α/β-MHC, Glut4, and CPT1α, sarcomere organization, glucose uptake and ATP production. Taken together, VNS optimized cardiomyocytes sarcomere organization and energy metabolism to improve heart function of the infarcted heart during the process of delaying and/or blocking the switch from compensated hypertrophy to decompensated heart failure, which were associated with activation of both P13K/AKT-FoxO3A-VEGF-A/B signaling cascade.
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Affiliation(s)
- Bin Luo
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China.,Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China
| | - Yan Wu
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China.,Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China
| | - Shu-Lin Liu
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China.,Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Xing-Yuan Li
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Hong-Rui Zhu
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China
| | - Lei Zhang
- Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China.,Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Fei Zheng
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Xiao-Yao Liu
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China
| | - Ling-Yun Guo
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Lu Wang
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Hong-Xian Song
- Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Yan-Xia Lv
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China.,Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China
| | - Zhong-Shan Cheng
- Applied Bioinformatics Center, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Shi-You Chen
- The Department of Surgery, University of Missouri, Columbia, MO, USA
| | - Jia-Ning Wang
- Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China.,Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China
| | - Jun-Ming Tang
- Department of Physiology, Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medicine Science, Hubei University of Medicine, 442000, Hubei, China. .,Institute of Biomedicine, Hubei University of Medicine, 442000, Hubei, China. .,Institute of Clinical Medicine and Department of Cardiology, Renmin Hospital, Hubei University of Medicine, 442000, Shiyan, Hubei, China.
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29
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Patent highlights April-May 2020. Pharm Pat Anal 2020; 9:139-146. [PMID: 32959701 DOI: 10.4155/ppa-2020-0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A snapshot of noteworthy recent developments in the patent literature of relevance to pharmaceutical and medical research and development.
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30
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Grassam-Rowe A, Ou X, Lei M. Novel cardiac cell subpopulations: Pnmt-derived cardiomyocytes. Open Biol 2020; 10:200095. [PMID: 32810421 PMCID: PMC7479933 DOI: 10.1098/rsob.200095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/29/2020] [Indexed: 11/12/2022] Open
Abstract
Diversity among highly specialized cells underlies the fundamental biology of complex multi-cellular organisms. One of the essential scientific questions in cardiac biology has been to define subpopulations within the heart. The heart parenchyma comprises specialized cardiomyocytes (CMs). CMs have been canonically classified into a few phenotypically diverse subpopulations largely based on their function and anatomic localization. However, there is growing evidence that CM subpopulations are in fact numerous, with a diversity of genetic origin and putatively different roles in physiology and pathophysiology. In this chapter, we introduce a recently discovered CM subpopulation: phenylethanolamine-N-methyl transferase (Pnmt)-derived cardiomyocytes (PdCMs). We discuss: (i) canonical classifications of CM subpopulations; (ii) discovery of PdCMs; (iii) Pnmt and the role of catecholamines in the heart; similarities and dissimilarities of PdCMs and canonical CMs; and (iv) putative functions of PdCMs in both physiological and pathological states and future directions, such as in intra-cardiac adrenergic signalling.
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Affiliation(s)
| | - Xianghong Ou
- Key Laboratory of Medical Electrophysiology of the Ministry of Education and Institute of Cardiovascular Research, Southwest Medical University, Luzhou 6400, People's Republic of China
| | - Ming Lei
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
- Key Laboratory of Medical Electrophysiology of the Ministry of Education and Institute of Cardiovascular Research, Southwest Medical University, Luzhou 6400, People's Republic of China
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31
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Pinheiro NM, Miranda CJCP, Santana FR, Bittencourt-Mernak M, Arantes-Costa FM, Olivo C, Perini A, Festa S, Caperuto LC, Tibério IFLC, Prado MAM, Martins MA, Prado VF, Prado CM. Effects of VAChT reduction and α7nAChR stimulation by PNU-282987 in lung inflammation in a model of chronic allergic airway inflammation. Eur J Pharmacol 2020; 882:173239. [PMID: 32619677 DOI: 10.1016/j.ejphar.2020.173239] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 05/26/2020] [Accepted: 05/29/2020] [Indexed: 12/17/2022]
Abstract
The cholinergic anti-inflammatory pathway has been shown to regulate lung inflammation and cytokine release in acute models of inflammation, mainly via α7 nicotinic receptor (α7nAChR). We aimed to evaluate the role of endogenous acetylcholine in chronic allergic airway inflammation in mice and the effects of therapeutic nAChR stimulation in this model. We first evaluated lung inflammation and remodeling on knock-down mice with 65% of vesicular acetylcholine transport (VAChT) gene reduction (KDVAChT) and wild-type(WT) controls that were subcutaneously sensitized and then inhaled with ovalbumin(OVA). We then evaluated the effects of PNU-282987(0.5-to-2mg/kg),(α7nAChR agonist) treatment in BALB/c male mice intraperitoneal sensitized and then inhaled with OVA. Another OVA-sensitized-group was treated with PNU-282987 plus Methyllycaconitine (MLA,1 mg/kg, α7nAChR antagonist) to confirm that the effects observed by PNU were due to α7nAChR. We showed that KDVAChT-OVA mice exhibit exacerbated airway inflammation when compared to WT-OVA mice. In BALB/c, PNU-282987 treatment reduced the number of eosinophils in the blood, BAL fluid, and around airways, and also decreased pulmonary levels of IL-4,IL-13,IL-17, and IgE in the serum of OVA-exposed mice. MLA pre-treatment abolished all the effects of PNU-282987. Additionally, we showed that PNU-282987 inhibited STAT3-phosphorylation and reduced SOCS3 expression in the lung. These data indicate that endogenous cholinergic tone is important to control allergic airway inflammation in a murine model. Moreover, α7nAChR is involved in the control of eosinophilic inflammation and airway remodeling, possibly via inhibition of STAT3/SOCS3 pathways. Together these data suggest that cholinergic anti-inflammatory system mainly α7nAChR should be further considered as a therapeutic target in asthma.
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Affiliation(s)
- Nathalia M Pinheiro
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil; Department of Bioscience, Federal University of Sao Paulo, Santos, Brazil
| | - Claudia J C P Miranda
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil
| | - Fernanda R Santana
- Department of Biological Science, Federal University of Sao Paulo, Diadema, Brazil
| | | | | | - Clarice Olivo
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil
| | - Adenir Perini
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil
| | - Sérgio Festa
- Department of Biological Science, Federal University of Sao Paulo, Diadema, Brazil
| | - Luciana C Caperuto
- Department of Biological Science, Federal University of Sao Paulo, Diadema, Brazil
| | - Iolanda F L C Tibério
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil
| | - Marco Antônio M Prado
- Molecular Medicine Group, Robarts Research Institute, Canada; Department of Physiology & Pharmacology and Department of Anatomy & Cell Biology, University of Western Ontario, London, Canada
| | - Mílton A Martins
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil
| | - Vânia F Prado
- Molecular Medicine Group, Robarts Research Institute, Canada; Department of Physiology & Pharmacology and Department of Anatomy & Cell Biology, University of Western Ontario, London, Canada
| | - Carla M Prado
- Department of Medicine, School of Medicine, University of Sao Paulo, São Paulo, Brazil; Department of Bioscience, Federal University of Sao Paulo, Santos, Brazil.
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32
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Oikawa S, Kai Y, Mano A, Nakamura S, Kakinuma Y. S-Nitroso-N-Pivaloyl-D-Penicillamine, a novel non-neuronal ACh system activator, modulates cardiac diastolic function to increase cardiac performance under pathophysiological conditions. Int Immunopharmacol 2020; 84:106459. [PMID: 32325404 DOI: 10.1016/j.intimp.2020.106459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/24/2020] [Accepted: 03/28/2020] [Indexed: 01/06/2023]
Abstract
We have previously reported the development of a novel chemical compound, S-Nitroso-N-Pivaloyl-D-Penicillamine (SNPiP), for the upregulation of the non-neuronal cardiac cholinergic system (NNCCS), a cardiac acetylcholine (ACh) synthesis system, which is different from the vagus nerve releasing of ACh as a neurotransmitter. However, it remains unclear how SNPiP could influence cardiac function positively, and whether SNPiP could improve cardiac function under various pathological conditions. SNPiP-injected control mice demonstrated a gradual upregulation in diastolic function without changes in heart rate. In contrast to some parameters in cardiac function that were influenced by SNPiP 24 h or 48 h after a single intraperitoneal (IP) injection, 72 h later, end-systolic pressure, cardiac output, end-diastolic volume, stroke volume, and ejection fraction increased. IP SNPiP injection also improved impaired cardiac function, which is a characteristic feature of the db/db heart, in a delayed fashion, including diastolic and systolic function, following either several consecutive injections or a single injection. SNPiP, a novel NNCCS activator, could be applied as a therapeutic agent for the upregulation of NNCCS and as a unique tool for modulating cardiac function via improvement in diastolic function.
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Affiliation(s)
- Shino Oikawa
- Department of Bioregulatory Science (Physiology), Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Yuko Kai
- Department of Bioregulatory Science (Physiology), Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Asuka Mano
- Department of Bioregulatory Science (Physiology), Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Shigeo Nakamura
- Department of Chemistry, Nippon Medical School, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-0023, Japan
| | - Yoshihiko Kakinuma
- Department of Bioregulatory Science (Physiology), Nippon Medical School Graduate School of Medicine, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan.
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33
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Wessler I, Kirkpatrick CJ. Cholinergic signaling controls immune functions and promotes homeostasis. Int Immunopharmacol 2020; 83:106345. [PMID: 32203906 DOI: 10.1016/j.intimp.2020.106345] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/06/2020] [Accepted: 02/23/2020] [Indexed: 12/15/2022]
Abstract
Acetylcholine (ACh) was created by nature as one of the first signaling molecules, expressed already in procaryotes. Based on the positively charged nitrogen, ACh could initially mediate signaling in the absence of receptors. When evolution established more and more complex organisms the new emerging organs systems, like the smooth and skeletal muscle systems, energy-generating systems, sexual reproductive system, immune system and the nervous system have further optimized the cholinergic signaling machinery. Thus, it is not surprising that ACh and the cholinergic system are expressed in the vast majority of cells. Consequently, multiple common interfaces exist, for example, between the nervous and the immune system. Research of the last 20 years has unmasked these multiple regulating mechanisms mediated by cholinergic signaling and thus, the biological role of ACh has been revised. The present article summarizes new findings and describes the role of both non-neuronal and neuronal ACh in protecting the organism from external and internal health threats, in providing energy for the whole organism and for the individual cell, controling immune functions to prevent inflammatory dysbalance, and finally, the involvement in critical brain functions, such as learning and memory. All these capacities of ACh enable the organism to attain and maintain homeostasis under changing external conditions. However, the existence of identical interfaces between all these different organ systems complicates the research for new therapeutic interventions, making it essential that every effort should be undertaken to find out more specific targets to modulate cholinergic signaling in different diseases.
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Affiliation(s)
- Ignaz Wessler
- Institute of Pathology, University Medical Center, Johannes Gutenberg University, D-55101 Mainz, Germany.
| | - Charles James Kirkpatrick
- Institute of Pathology, University Medical Center, Johannes Gutenberg University, D-55101 Mainz, Germany
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34
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Visualization of cardiovascular development, physiology and disease at the single-cell level: Opportunities and future challenges. J Mol Cell Cardiol 2020; 142:80-92. [PMID: 32205182 DOI: 10.1016/j.yjmcc.2020.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 12/18/2022]
Abstract
Single-cell RNA sequencing (scRNA-seq), a method of transcriptome sequencing at the single-cell level, has recently emerged as a revolutionary technology in the field of biomedical research. Compared to conventional gene expression profiling in bulk, scRNA-seq resolves biological differences among individual cells and enables the identification of rare cell populations that are easily overlooked. This review introduces the method of scRNA-seq, summarizes its applications in the field of cardiovascular disease research, and discusses existing limitations and prospects for future applications.
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35
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Lackie RE, Razzaq AR, Farhan SMK, Qiu LR, Moshitzky G, Beraldo FH, Lopes MH, Maciejewski A, Gros R, Fan J, Choy WY, Greenberg DS, Martins VR, Duennwald ML, Lerch JP, Soreq H, Prado VF, Prado MAM. Modulation of hippocampal neuronal resilience during aging by the Hsp70/Hsp90 co-chaperone STI1. J Neurochem 2019; 153:727-758. [PMID: 31562773 DOI: 10.1111/jnc.14882] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/22/2019] [Accepted: 09/25/2019] [Indexed: 12/18/2022]
Abstract
Chaperone networks are dysregulated with aging, but whether compromised Hsp70/Hsp90 chaperone function disturbs neuronal resilience is unknown. Stress-inducible phosphoprotein 1 (STI1; STIP1; HOP) is a co-chaperone that simultaneously interacts with Hsp70 and Hsp90, but whose function in vivo remains poorly understood. We combined in-depth analysis of chaperone genes in human datasets, analysis of a neuronal cell line lacking STI1 and of a mouse line with a hypomorphic Stip1 allele to investigate the requirement for STI1 in aging. Our experiments revealed that dysfunctional STI1 activity compromised Hsp70/Hsp90 chaperone network and neuronal resilience. The levels of a set of Hsp90 co-chaperones and client proteins were selectively affected by reduced levels of STI1, suggesting that their stability depends on functional Hsp70/Hsp90 machinery. Analysis of human databases revealed a subset of co-chaperones, including STI1, whose loss of function is incompatible with life in mammals, albeit they are not essential in yeast. Importantly, mice expressing a hypomorphic STI1 allele presented spontaneous age-dependent hippocampal neurodegeneration and reduced hippocampal volume, with consequent spatial memory deficit. We suggest that impaired STI1 function compromises Hsp70/Hsp90 chaperone activity in mammals and can by itself cause age-dependent hippocampal neurodegeneration in mice. Cover Image for this issue: doi: 10.1111/jnc.14749.
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Affiliation(s)
- Rachel E Lackie
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Program in Neuroscience, University of Western Ontario, London, Ontario, Canada
| | - Abdul R Razzaq
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Program in Neuroscience, University of Western Ontario, London, Ontario, Canada
| | - Sali M K Farhan
- Analytic and Translational Genetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Harvard Medical School, and The Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Boston, Massachusetts, USA
| | - Lily R Qiu
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Gilli Moshitzky
- Department of Biological Chemistry, The Edmond and Lily Safra Center for Brain Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Flavio H Beraldo
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
| | - Marilene H Lopes
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Laboratory of Neurobiology and Stem cells, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Andrzej Maciejewski
- Department of Biochemistry, University of Western Ontario, London, Ontario, Canada
| | - Robert Gros
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada.,Department of Medicine, University of Western Ontario, London, Ontario, Canada
| | - Jue Fan
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada
| | - Wing-Yiu Choy
- Department of Biochemistry, University of Western Ontario, London, Ontario, Canada
| | - David S Greenberg
- Department of Biological Chemistry, The Edmond and Lily Safra Center for Brain Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Vilma R Martins
- International Research Center, A.C. Camargo Cancer Center, São Paulo, Brazil
| | - Martin L Duennwald
- Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Pathology and Laboratory Medicine, University of Western Ontario, London, Ontario, Canada
| | - Jason P Lerch
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Hermona Soreq
- Department of Biological Chemistry, The Edmond and Lily Safra Center for Brain Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Vania F Prado
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Program in Neuroscience, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Marco A M Prado
- Robarts Research Institute, University of Western Ontario, London, Ontario, Canada.,Program in Neuroscience, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
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36
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May SM, Reyes A, Martir G, Reynolds J, Paredes LG, Karmali S, Stephens RCM, Brealey D, Ackland GL. Acquired loss of cardiac vagal activity is associated with myocardial injury in patients undergoing noncardiac surgery: prospective observational mechanistic cohort study. Br J Anaesth 2019; 123:758-767. [PMID: 31492527 DOI: 10.1016/j.bja.2019.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/02/2019] [Accepted: 08/03/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Myocardial injury is more frequent after noncardiac surgery in patients with preoperative cardiac vagal dysfunction, as quantified by delayed heart rate (HR) recovery after cessation of cardiopulmonary exercise testing. We hypothesised that serial and dynamic measures of cardiac vagal activity are also associated with myocardial injury after noncardiac surgery. METHODS Serial autonomic measurements were made before and after surgery in patients undergoing elective noncardiac surgery. Cardiac vagal activity was quantified by HR variability and HR recovery after orthostatic challenge (supine to sitting). Revised cardiac risk index (RCRI) was calculated for each patient. The primary outcome was myocardial injury (high-sensitivity troponin ≥15 ng L-1) within 48 h of surgery, masked to investigators. The exposure of interest was cardiac vagal activity (high-frequency power spectral analysis [HFLn]) and HR recovery 90 s from peak HR after the orthostatic challenge. RESULTS Myocardial injury occurred in 48/189 (25%) patients, in whom 41/48 (85%) RCRI was <2. In patients with myocardial injury, vagal activity (HFLn) declined from 5.15 (95% confidence interval [CI]: 4.58-5.72) before surgery to 4.33 (95% CI: 3.76-4.90; P<0.001) 24 h after surgery. In patients who remained free of myocardial injury, HFLn did not change (4.95 [95% CI: 4.64-5.26] before surgery vs 4.76 [95% CI: 4.44-5.08] after surgery). Before and after surgery, the orthostatic HR recovery was slower in patients with myocardial injury (5 beats min-1 [95% CI: 3-7]), compared with HR recovery in patients who remained free of myocardial injury (10 beats min-1 [95% CI: 7-12]; P=0.02). CONCLUSIONS Serial HR measures indicating loss of cardiac vagal activity are associated with perioperative myocardial injury in lower-risk patients undergoing noncardiac surgery.
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Affiliation(s)
- Shaun M May
- Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Anna Reyes
- University College London NHS Hospitals Trust, London, UK
| | - Gladys Martir
- University College London NHS Hospitals Trust, London, UK
| | - Joseph Reynolds
- Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, UK
| | | | - Shamir Karmali
- Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, UK
| | | | - David Brealey
- University College London NHS Hospitals Trust, London, UK
| | - Gareth L Ackland
- Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, UK.
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Horsager J, Fedorova TD, Berge NVD, Klinge MW, Knudsen K, Hansen AK, Alstrup AKO, Krogh K, Gormsen L, Borghammer P. Cardiac 11C-Donepezil Binding Increases With Age in Healthy Humans: Potentially Signifying Sigma-1 Receptor Upregulation. J Cardiovasc Pharmacol Ther 2019; 24:365-370. [PMID: 30913922 DOI: 10.1177/1074248419838509] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Donepezil may have cardioprotective properties, but the mechanism is unclear. Using positron-emission tomography (PET), we explored 11C-donepezil uptake in the heart of humans in relation to age. The results are discussed in the context of the cardioprotective property of donepezil. METHODS We included data from 57 patients with cardiac 11C-donepezil PET scans. Linear regression analyses were performed to explore the correlation between cardiac 11C-donepezil standardized uptake value (SUV) and age. Subgroup analyses were performed for healthy controls, patients with prodromal or diagnosed Parkinson disease (PD), males, and females. RESULTS In the total group of 57 patients, linear regression analysis revealed a significant positive correlation between cardiac 11C-donepezil uptake and age ( r2 = .63, P < .0001). The average increase was ≈1.25 SUV per decade and a 2-fold increase in SUV from age 30 to 65 years. Subgroup analyses also showed significant correlations: healthy control patients alone (n = 28, r2 = .73, P < .0001), prodromal or diagnosed PD (n = 29, r2 = .28, P = .03), male patients (n = 34, r2 = .49, P < .0001), and female patients (n = 23, r2 = .82, P < .0001). No other organs showed increased 11C-donepezil binding with age. CONCLUSIONS 11C-donepezil SUV increases robustly with age in the normal human heart. We speculate that the increased donepezil binding is caused primarily by sigma-1 receptor upregulation. If our interpretation is correct, it shows that sigma-1 receptors are dynamically regulated and may represent an overlooked target for pharmacological intervention studies.
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Affiliation(s)
- Jacob Horsager
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Tatyana D Fedorova
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Nathalie V D Berge
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Mette W Klinge
- 2 Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Karoline Knudsen
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Allan K Hansen
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Aage K O Alstrup
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Klaus Krogh
- 2 Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Gormsen
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
| | - Per Borghammer
- 1 Department of Nuclear Medicine and PET Center, Aarhus University Hospital, Aarhus, Denmark
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38
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Rocha-Resende C, Weinheimer C, Bajpai G, Adamo L, Matkovich SJ, Schilling J, Barger PM, Lavine KJ, Mann DL. Immunomodulatory role of non-neuronal cholinergic signaling in myocardial injury. JCI Insight 2019; 5:128961. [PMID: 31162139 DOI: 10.1172/jci.insight.128961] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Whereas prior studies have demonstrated an important immunomodulatory role for the neuronal cholinergic system in the heart, the role of the non-neuronal cholinergic system is not well understood. To address the immunomodulatory role of the non-neuronal cholinergic system in the heart we used a previously validated diphtheria toxin (DT)-induced cardiomyocyte ablation model (Rosa26-DTMlc2v-Cre mice). DT-injected Rosa26-DTMlc2v-Cre mice were treated with diluent or Pyridostigmine Bromide (PYR), a reversible cholinesterase inhibitor. PYR treatment resulted in increased survival and decreased numbers of MHC-IIlowCCR2+ macrophages in DT-injected Rosa26-DTMlc2v-Cre mice compared to diluent treated Rosa26-DTMlc2v-Cre mice. Importantly, the expression of CCL2/7 mRNA and protein was reduced in the hearts of PYR-treated mice. Backcrossing Rosa26-DTMlc2v-Cre mice with a transgenic mouse line (Chat-ChR2) that constitutively overexpresses the vesicular acetylcholine transporter (VAChT) resulted in decreased expression of Ccl2/7 mRNA and decreased numbers of CD68+ cells in DT-injured Rosa26-DTMlc2v-Cre/Chat-ChR2 mouse hearts, consistent with the pharmacologic studies with PYR. In vitro studies with cultures of LPS-stimulated peritoneal macrophages revealed a concentration-dependent reduction in CCL2 secretion following stimulation with ACh, nicotine and muscarine. Viewed together, these findings reveal a previously unappreciated immunomodulatory role for the non-neuronal cholinergic system in regulating homeostatic responses in the heart following tissue injury.
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Lehner KR, Silverman HA, Addorisio ME, Roy A, Al-Onaizi MA, Levine Y, Olofsson PS, Chavan SS, Gros R, Nathanson NM, Al-Abed Y, Metz CN, Prado VF, Prado MAM, Tracey KJ, Pavlov VA. Forebrain Cholinergic Signaling Regulates Innate Immune Responses and Inflammation. Front Immunol 2019; 10:585. [PMID: 31024522 PMCID: PMC6455130 DOI: 10.3389/fimmu.2019.00585] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/05/2019] [Indexed: 01/04/2023] Open
Abstract
The brain regulates physiological functions integral to survival. However, the insight into brain neuronal regulation of peripheral immune function and the neuromediator systems and pathways involved remains limited. Here, utilizing selective genetic and pharmacological approaches, we studied the role of forebrain cholinergic signaling in the regulation of peripheral immune function and inflammation. Forebrain-selective genetic ablation of acetylcholine release and vagotomy abolished the suppression of serum TNF by the centrally-acting cholinergic drug galantamine in murine endotoxemia. Selective stimulation of acetylcholine action on the M1 muscarinic acetylcholine receptor (M1 mAChR) by central administration of the positive allosteric modulator benzyl quinolone carboxylic acid (BQCA) suppressed serum TNF (TNFα) levels in murine endotoxemia. This effect was recapitulated by peripheral administration of the compound. BQCA also improved survival in murine endotoxemia and these effects were abolished in M1 mAChR knockout (KO) mice. Selective optogenetic stimulation of basal forebrain cholinergic neurons innervating brain regions with abundant M1 mAChR localization reduced serum TNF in endotoxemic mice. These findings reveal that forebrain cholinergic neurons regulate innate immune responses and inflammation, suggesting the possibility that in diseases associated with cholinergic dysfunction, including Alzheimer's disease this anti-inflammatory regulation can be impaired. These results also suggest novel anti-inflammatory approaches based on targeting forebrain cholinergic signaling in sepsis and other disorders characterized by immune dysregulation.
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Affiliation(s)
- Kurt R. Lehner
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
| | - Harold A. Silverman
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Meghan E. Addorisio
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Ashbeel Roy
- Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Mohammed A. Al-Onaizi
- Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, ON, Canada
- Department of Anatomy, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Yaakov Levine
- SetPoint Medical Corporation, Valencia, CA, United States
| | - Peder S. Olofsson
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
- Department of Medicine, Center for Bioelectronic Medicine, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Sangeeta S. Chavan
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Robert Gros
- Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Department of Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Neil M. Nathanson
- Department of Pharmacology, University of Washington, Seattle, WA, United States
| | - Yousef Al-Abed
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
- Department of Medicinal Chemistry, Center for Molecular Innovation, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Christine N. Metz
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Vania F. Prado
- Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Graduate Program in Neuroscience, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Marco A. M. Prado
- Schulich School of Medicine and Dentistry, Robarts Research Institute, University of Western Ontario, London, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
- Graduate Program in Neuroscience, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - Kevin J. Tracey
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Valentin A. Pavlov
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, United States
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
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40
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Janickova H, Kljakic O, Rosborough K, Raulic S, Matovic S, Gros R, Saksida LM, Bussey TJ, Inoue W, Prado VF, Prado MAM. Selective decrease of cholinergic signaling from pedunculopontine and laterodorsal tegmental nuclei has little impact on cognition but markedly increases susceptibility to stress. FASEB J 2019; 33:7018-7036. [PMID: 30857416 DOI: 10.1096/fj.201802108r] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The pedunculopontine tegmental nucleus (PPT) and laterodorsal tegmental nucleus (LDT) are heterogeneous brainstem structures that contain cholinergic, glutamatergic, and GABAergic neurons. PPT/LDT neurons are suggested to modulate both cognitive and noncognitive functions, yet the extent to which acetylcholine (ACh) signaling from the PPT/LDT is necessary for normal behavior remains uncertain. We addressed this issue by using a mouse model in which PPT/LDT cholinergic signaling is highly decreased by selective deletion of the vesicular ACh transporter (VAChT) gene. This approach interferes exclusively with ACh signaling, leaving signaling by other neurotransmitters from PPT/LDT cholinergic neurons intact and sparing other cells. VAChT mutants were examined on different PPT/LDT-associated cognitive domains. Interestingly, VAChT mutants showed no attentional deficits and only minor cognitive flexibility impairments while presenting large deficiencies in both spatial and cued Morris water maze (MWM) tasks. Conversely, working spatial memory determined with the Y-maze and spatial memory measured with the Barnes maze were not affected, suggesting that deficits in MWM were unrelated to spatial memory abnormalities. Supporting this interpretation, VAChT mutants exhibited alterations in anxiety-like behavior and increased corticosterone levels after exposure to the MWM, suggesting altered stress response. Thus, PPT/LDT VAChT-mutant mice present little cognitive impairment per se, yet they exhibit increased susceptibility to stress, which may lead to performance deficits in more stressful conditions.-Janickova, H., Kljakic, O., Rosborough, K., Raulic, S., Matovic, S., Gros, R., Saksida, L. M., Bussey, T. J., Inoue, W., Prado, V. F., Prado, M. A. M. Selective decrease of cholinergic signaling from pedunculopontine and laterodorsal tegmental nuclei has little impact on cognition but markedly increases susceptibility to stress.
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Affiliation(s)
- Helena Janickova
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Ornela Kljakic
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Kaie Rosborough
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Sanda Raulic
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Sara Matovic
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and
| | - Robert Gros
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and
| | - Lisa M Saksida
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and.,Brain and Mind Institute, The University of Western Ontario, London, Ontario, Canada
| | - Timothy J Bussey
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and.,Brain and Mind Institute, The University of Western Ontario, London, Ontario, Canada
| | - Wataru Inoue
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and
| | - Vania F Prado
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and.,Brain and Mind Institute, The University of Western Ontario, London, Ontario, Canada
| | - Marco A M Prado
- Robarts Research Institute, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada; and.,Brain and Mind Institute, The University of Western Ontario, London, Ontario, Canada
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41
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Santana FPR, Pinheiro NM, Bittencourt-Mernak MI, Perini A, Yoshizaki K, Macchione M, Saldiva PHN, Martins MA, Tibério IFLC, Prado MAM, Prado VF, Prado CM. Vesicular acetylcholine transport deficiency potentiates some inflammatory responses induced by diesel exhaust particles. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:494-504. [PMID: 30368143 DOI: 10.1016/j.ecoenv.2018.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 09/30/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
Endogenous acetylcholine (ACh), which depends of the levels of vesicular ACh transport (VAChT) to be released, is the central mediator of the cholinergic anti-inflammatory system. ACh controls the release of cytokine in different models of inflammation. Diesel exhaust particles (DEP) are one of the major environmental pollutants produced in large quantity by automotive engines in urban center. DEP bind the lung parenchyma and induce inflammation. We evaluated whether cholinergic dysfunction worsens DEP-induced lung inflammation. Male mice with decreased ACh release due to reduced expression of VAChT (VAChT-KD mice) were submitted to DEP exposure for 30 days (3 mg/mL of DEP, once a day, five days a week) or saline. Pulmonary function and inflammation as well as extracellular matrix fiber deposition were evaluated. Additionally, airway and nasal epithelial mucus production were quantified. We found that DEP instillation worsened lung function and increased lung inflammation. Higher levels of mononuclear cells were observed in the peripheral blood of both wild-type (WT) and VAChT-KD mice. Also, both wild-type (WT) and VAChT-KD mice showed an increase in macrophages in bronchoalveolar lavage fluid (BALF) as well as increased expression of IL-4, IL-6, IL-13, TNF-α, and NF-κB in lung cells. The collagen fiber content in alveolar septa was also increased in both genotypes. On the other hand, we observed that granulocytes were increased only in VAChT-KD peripheral blood. Likewise, increased BALF lymphocytes and neutrophils as well as increased elastic fibers in alveolar septa, airway neutral mucus, and nasal epithelia acid mucus were observed only in VAChT-KD mice. The cytokines IL-4 and TNF-α were also higher in VAChT-KD mice compared with WT mice. In conclusion, decreased ability to release ACh exacerbates some of the lung alterations induced by DEP in mice, suggesting that VAChT-KD animals are more vulnerable to the effects of DEP in the lung.
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Affiliation(s)
- Fernanda P R Santana
- Department of Medicine, School of Medicine, Universidade de São Paulo, Brazil; Department of Biological Science, Universidade Federal de São Paulo, Diadema, Brazil
| | - Nathalia M Pinheiro
- Department of Medicine, School of Medicine, Universidade de São Paulo, Brazil
| | | | - Adenir Perini
- Department of Medicine, School of Medicine, Universidade de São Paulo, Brazil
| | - Kelly Yoshizaki
- Department of Pathology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Mariângela Macchione
- Department of Pathology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Paulo H N Saldiva
- Department of Pathology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Milton A Martins
- Department of Medicine, School of Medicine, Universidade de São Paulo, Brazil
| | | | - Marco Antônio M Prado
- Department of Physiology & Pharmacology, University of Western Ontario, London, Canada; Department of Anatomy & Cell Biology, University of Western Ontario, London, Canada
| | - Vânia F Prado
- Department of Physiology & Pharmacology, University of Western Ontario, London, Canada; Department of Anatomy & Cell Biology, University of Western Ontario, London, Canada
| | - Carla M Prado
- Department of Medicine, School of Medicine, Universidade de São Paulo, Brazil; Department of Bioscience, Universidade Federal de São Paulo, Santos, Brazil.
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42
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Perbellini F, Watson SA, Bardi I, Terracciano CM. Heterocellularity and Cellular Cross-Talk in the Cardiovascular System. Front Cardiovasc Med 2018; 5:143. [PMID: 30443550 PMCID: PMC6221907 DOI: 10.3389/fcvm.2018.00143] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/25/2018] [Indexed: 01/08/2023] Open
Abstract
Cellular specialization and interactions with other cell types are the essence of complex multicellular life. The orchestrated function of different cell populations in the heart, in combination with a complex network of intercellular circuits of communication, is essential to maintain a healthy heart and its disruption gives rise to pathological conditions. Over the past few years, the development of new biological research tools has facilitated more accurate identification of the cardiac cell populations and their specific roles. This review aims to provide an overview on the significance and contributions of the various cellular components: cardiomyocytes, fibroblasts, endothelial cells, vascular smooth muscle cells, pericytes, and inflammatory cells. It also aims to describe their role in cardiac development, physiology and pathology with a particular focus on the importance of heterocellularity and cellular interaction between these different cell types.
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Affiliation(s)
- Filippo Perbellini
- Division of Cardiovascular Sciences, Myocardial Function, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | | | | | - Cesare M. Terracciano
- Division of Cardiovascular Sciences, Myocardial Function, National Heart and Lung Institute, Imperial College London, London, United Kingdom
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43
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Saw EL, Kakinuma Y, Fronius M, Katare R. The non-neuronal cholinergic system in the heart: A comprehensive review. J Mol Cell Cardiol 2018; 125:129-139. [PMID: 30343172 DOI: 10.1016/j.yjmcc.2018.10.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/24/2018] [Accepted: 10/14/2018] [Indexed: 01/01/2023]
Abstract
The autonomic influences on the heart have a ying-yang nature, albeit oversimplified, the interplay between the sympathetic and parasympathetic system (known as the cholinergic system) is often complex and remain poorly understood. Recently, the heart has been recognized to consist of neuronal and non-neuronal cholinergic system (NNCS). The existence of cardiac NNCS has been confirmed by the presence of cholinergic markers in the cardiomyocytes, which are crucial for synthesis (choline acetyltransferase, ChAT), storage (vesicular acetylcholine transporter, VAChT), reuptake of choline for synthesis (high-affinity choline transporter, CHT1) and degradation (acetylcholinesterase, AChE) of acetylcholine (ACh). The non-neuronal ACh released from cardiomyocytes is believed to locally regulate some of the key physiological functions of the heart, such as regulation of heart rate, offsetting hypertrophic signals, maintenance of action potential propagation as well as modulation of cardiac energy metabolism via the muscarinic ACh receptor in an auto/paracrine manner. Apart from this, several studies have also provided evidence for the beneficial role of ACh released from cardiomyocytes against cardiovascular diseases such as sympathetic hyperactivity-induced cardiac remodeling and dysfunction as well as myocardial infarction, confirming the important role of NNCS in disease prevention. In this review, we aim to provide a fundamental overview of cardiac NNCS, and information about its physiological role, regulatory factors as well as its cardioprotective effects. Finally, we propose the different approaches to target cardiac NNCS as an adjunctive treatment to specifically address the withdrawal of neuronal cholinergic system in cardiovascular disease such as heart failure.
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Affiliation(s)
- Eng Leng Saw
- Department of Physiology-HeartOtago, School of Biomedical Sciences, University of Otago, New Zealand
| | - Yoshihiko Kakinuma
- Department of Physiology (Bioregulatory Science), Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Martin Fronius
- Department of Physiology-HeartOtago, School of Biomedical Sciences, University of Otago, New Zealand.
| | - Rajesh Katare
- Department of Physiology-HeartOtago, School of Biomedical Sciences, University of Otago, New Zealand.
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Intachai K, C Chattipakorn S, Chattipakorn N, Shinlapawittayatorn K. Revisiting the Cardioprotective Effects of Acetylcholine Receptor Activation against Myocardial Ischemia/Reperfusion Injury. Int J Mol Sci 2018; 19:ijms19092466. [PMID: 30134547 PMCID: PMC6164157 DOI: 10.3390/ijms19092466] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/15/2018] [Accepted: 08/18/2018] [Indexed: 12/19/2022] Open
Abstract
Acute myocardial infarction (AMI) is the most common cause of acute myocardial injury and its most clinically significant form. The most effective treatment for AMI is to restore an adequate coronary blood flow to the ischemic myocardium as quickly as possible. However, reperfusion of an ischemic region can induce cardiomyocyte death, a phenomenon termed “myocardial ischemia/reperfusion (I/R) injury”. Disruption of cardiac parasympathetic (vagal) activity is a common hallmark of a variety of cardiovascular diseases including AMI. Experimental studies have shown that increased vagal activity exerts cardioprotective effects against myocardial I/R injury. In addition, acetylcholine (ACh), the principle cardiac vagal neurotransmitter, has been shown to replicate the cardioprotective effects of cardiac ischemic conditioning. Moreover, studies have shown that cardiomyocytes can synthesize and secrete ACh, which gives further evidence concerning the importance of the non-neuronal cholinergic signaling cascades. This suggests that the activation of ACh receptors is involved in cardioprotection against myocardial I/R injury. There are two types of ACh receptors (AChRs), namely muscarinic and nicotinic receptors (mAChRs and nAChRs, respectively). However, the effects of AChRs activation in cardioprotection during myocardial I/R are still not fully understood. In this review, we summarize the evidence suggesting the association between AChRs activation with both electrical and pharmacological interventions and the cardioprotection during myocardial I/R, as well as outline potential mechanisms underlying these cardioprotective effects.
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Affiliation(s)
- Kannaporn Intachai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand.
- Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Krekwit Shinlapawittayatorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai 50200, Thailand.
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45
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Decoding resistant hypertension signalling pathways. Clin Sci (Lond) 2017; 131:2813-2834. [PMID: 29184046 DOI: 10.1042/cs20171398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/16/2017] [Accepted: 10/23/2017] [Indexed: 01/01/2023]
Abstract
Resistant hypertension (RH) is a clinical condition in which the hypertensive patient has become resistant to drug therapy and is often associated with increased cardiovascular morbidity and mortality. Several signalling pathways have been studied and related to the development and progression of RH: modulation of sympathetic activity by leptin and aldosterone, primary aldosteronism, arterial stiffness, endothelial dysfunction and variations in the renin-angiotensin-aldosterone system (RAAS). miRNAs comprise a family of small non-coding RNAs that participate in the regulation of gene expression at post-transcriptional level. miRNAs are involved in the development of both cardiovascular damage and hypertension. Little is known of the molecular mechanisms that lead to development and progression of this condition. This review aims to cover the potential roles of miRNAs in the mechanisms associated with the development and consequences of RH, and explore the current state of the art of diagnostic and therapeutic tools based on miRNA approaches.
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Prado MAM, Marchot P, Silman I. Preface: Cholinergic Mechanisms. J Neurochem 2017; 142 Suppl 2:3-6. [PMID: 28791707 DOI: 10.1111/jnc.14027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 01/28/2023]
Abstract
This special issue is a companion to the meeting 'XVth International Symposium on Cholinergic Mechanisms', and is edited by Israel Silman, Marco Prado and Pascale Marchot. In the review articles, renowned researchers in the field capture key mechanisms of cholinergic neurotransmission, from genomic amplification of cholinesterase genes, splicing and post-translational modifications; features of the neuromuscular junction, implications of cholinergic circuitry that are relevant to addiction, anxiety and mood, to preclinical models, protein biomarkers, and clinical findings that are relevant to pathology, for example, developmental neurotoxicity. The broad variety of features reflects the impact of cholinergic mechanisms on many physiological events and emphasizes the importance of research in this area. This is the Preface for the special issue XVth International Symposium on Cholinergic Mechanisms.
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Affiliation(s)
- Marco A M Prado
- Robarts Research Institute, Department of Physiology and Pharmacology and Department of Anatomy and Cell Biology, The University of Western Ontario London, Ontario, Canada
| | - Pascale Marchot
- Centre National de la Recherche Scientifique, Aix-Marseille Universite, Marseille
| | - Israel Silman
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
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Lu Y, Zhao M, Liu J, He X, Yu X, Liu L, Sun L, Chen L, Zang W. Long-term administration of pyridostigmine attenuates pressure overload-induced cardiac hypertrophy by inhibiting calcineurin signalling. J Cell Mol Med 2017; 21:2106-2116. [PMID: 28296184 PMCID: PMC5571547 DOI: 10.1111/jcmm.13133] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 01/19/2017] [Indexed: 02/07/2023] Open
Abstract
Cardiac hypertrophy is associated with autonomic imbalance, characterized by enhanced sympathetic activity and withdrawal of parasympathetic control. Increased parasympathetic function improves ventricular performance. However, whether pyridostigmine, a reversible acetylcholinesterase inhibitor, can offset cardiac hypertrophy induced by pressure overload remains unclear. Hence, this study aimed to determine whether pyridostigmine can ameliorate pressure overload-induced cardiac hypertrophy and identify the underlying mechanisms. Rats were subjected to either sham or constriction of abdominal aorta surgery and treated with or without pyridostigmine for 8 weeks. Vagal activity and cardiac function were determined using PowerLab. Cardiac hypertrophy was evaluated using various histological stains. Protein markers for cardiac hypertrophy were quantitated by Western blot and immunoprecipitation. Pressure overload resulted in a marked reduction in vagal discharge and a profound increase in cardiac hypertrophy index and cardiac dysfunction. Pyridostigmine increased the acetylcholine levels by inhibiting acetylcholinesterase in rats with pressure overload. Pyridostigmine significantly attenuated cardiac hypertrophy based on reduction in left ventricular weight/body weight, suppression of the levels of atrial natriuretic peptide, brain natriuretic peptide and β-myosin heavy chain, and a reduction in cardiac fibrosis. These effects were accompanied by marked improvement of cardiac function. Additionally, pyridostigmine inhibited the CaN/NFAT3/GATA4 pathway and suppressed Orai1/STIM1 complex formation. In conclusion, pressure overload resulted in cardiac hypertrophy, cardiac dysfunction and a significant reduction in vagal discharge. Pyridostigmine attenuated cardiac hypertrophy and improved cardiac function, which was related to improved cholinergic transmission efficiency (decreased acetylcholinesterase and increased acetylcholine), inhibition of the CaN/NFAT3/GATA4 pathway and suppression of the interaction of Orai1/STIM1.
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Affiliation(s)
- Yi Lu
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Ming Zhao
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Jin‐Jun Liu
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Xi He
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Xiao‐Jiang Yu
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Long‐Zhu Liu
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Lei Sun
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Li‐Na Chen
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
| | - Wei‐Jin Zang
- Department of Pharmacology School of Basic Medical Sciences Xian Jiaotong University Health Science CenterXi'anShaanxiChina
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Janickova H, Prado VF, Prado MAM, El Mestikawy S, Bernard V. Vesicular acetylcholine transporter (VAChT) over-expression induces major modifications of striatal cholinergic interneuron morphology and function. J Neurochem 2017. [DOI: 10.1111/jnc.14105] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Helena Janickova
- Department of Physiology and Pharmacology and Department of Anatomy & Cell Biology; Robarts Research Institute; Molecular Medicine Laboratories; The University of Western Ontario; London Ontario Canada
| | - Vania F. Prado
- Department of Physiology and Pharmacology and Department of Anatomy & Cell Biology; Robarts Research Institute; Molecular Medicine Laboratories; The University of Western Ontario; London Ontario Canada
| | - Marco A. M. Prado
- Department of Physiology and Pharmacology and Department of Anatomy & Cell Biology; Robarts Research Institute; Molecular Medicine Laboratories; The University of Western Ontario; London Ontario Canada
| | - Salah El Mestikawy
- Sorbonne Universités; Université Pierre et Marie Curie UM 119 - CNRS UMR 8246 - INSERM U1130; Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS); Paris France
- Department of Psychiatry; Douglas Mental Health University Institute; McGill University; Montreal Canada
| | - Véronique Bernard
- Sorbonne Universités; Université Pierre et Marie Curie UM 119 - CNRS UMR 8246 - INSERM U1130; Neurosciences Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS); Paris France
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Various Regulatory Modes for Circadian Rhythmicity and Sexual Dimorphism in the Non-Neuronal Cardiac Cholinergic System. J Cardiovasc Transl Res 2017; 10:411-422. [PMID: 28497301 DOI: 10.1007/s12265-017-9750-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 05/02/2017] [Indexed: 01/09/2023]
Abstract
Cardiomyocytes possess a non-neuronal cardiac cholinergic system (NNCCS) regulated by a positive feedback system; however, its other regulatory mechanisms remain to be elucidated, which include the epigenetic control or regulation by the female sex steroid, estrogen. Here, the NNCCS was shown to possess a circadian rhythm; its activity was upregulated in the light-off phase via histone acetyltransferase (HAT) activity and downregulated in the light-on phase. Disrupting the circadian rhythm altered the physiological choline acetyltransferase (ChAT) expression pattern. The NNCCS circadian rhythm may be regulated by miR-345, independently of HAT, causing decreased cardiac ChAT expression. Murine cardiac ChAT expression and ACh contents were increased more in female hearts than in male hearts. This upregulation was downregulated by treatment with the estrogen receptor antagonist tamoxifen, and in contrast, estrogen reciprocally regulated cardiac miR-345 expression. These results suggest that the NNCCS is regulated by the circadian rhythm and is affected by sexual dimorphism.
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Modification of distinct ion channels differentially modulates Ca 2+ dynamics in primary cultured rat ventricular cardiomyocytes. Sci Rep 2017; 7:40952. [PMID: 28102360 PMCID: PMC5244425 DOI: 10.1038/srep40952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 12/12/2016] [Indexed: 01/03/2023] Open
Abstract
Primary cultured cardiomyocytes show spontaneous Ca2+ oscillations (SCOs) which not only govern contractile events, but undergo derangements that promote arrhythmogenesis through Ca2+ -dependent mechanism. We systematically examined influence on SCOs of an array of ion channel modifiers by recording intracellular Ca2+ dynamics in rat ventricular cardiomyocytes using Ca2+ specific fluorescence dye, Fluo-8/AM. Voltage-gated sodium channels (VGSCs) activation elongates SCO duration and reduces SCO frequency while inhibition of VGSCs decreases SCO frequency without affecting amplitude and duration. Inhibition of voltage-gated potassium channel increases SCO duration. Direct activation of L-type Ca2+ channels (LTCCs) induces SCO bursts while suppressing LTCCs decreases SCO amplitude and slightly increases SCO frequency. Activation of ryanodine receptors (RyRs) increases SCO duration and decreases both SCO amplitude and frequency while inhibiting RyRs decreases SCO frequency without affecting amplitude and duration. The potencies of these ion channel modifiers on SCO responses are generally consistent with their affinities in respective targets demonstrating that modification of distinct targets produces different SCO profiles. We further demonstrate that clinically-used drugs that produce Long-QT syndrome including cisapride, dofetilide, sotalol, and quinidine all induce SCO bursts while verapamil has no effect. Therefore, occurrence of SCO bursts may have a translational value to predict cardiotoxicants causing Long-QT syndrome.
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