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Tian T, Yu Q, Yang D, Zhang X, Zhang C, Li J, Luo T, Zhang K, Lv X, Wang Y, Wang H, Li H. Endothelial α 1-adrenergic receptor activation improves cardiac function in septic mice via PKC-ERK/p38MAPK signaling pathway. Int Immunopharmacol 2024; 141:112937. [PMID: 39182270 DOI: 10.1016/j.intimp.2024.112937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 07/30/2024] [Accepted: 08/12/2024] [Indexed: 08/27/2024]
Abstract
Cardiomyopathy is particularly common in septic patients. Our previous studies have shown that activation of the alpha 1 adrenergic receptor (α1-AR) on cardiomyocytes inhibits sepsis-induced myocardial dysfunction. However, the role of cardiac endothelial α1-AR in septic cardiomyopathy has not been determined. Here, we identified α1-AR expression in mouse and human endothelial cells and showed that activation of α1-AR with phenylephrine (PE) improved cardiac function and survival by preventing cardiac endothelial injury in septic mice. Mechanistically, activating α1-AR with PE decreased the expression of ICAM-1, VCAM-1, iNOS, E-selectin, and p-p38MAPK, while promoting PKC and ERK1/2 phosphorylation in LPS-treated endothelial cells. These effects were abolished by a PKC inhibitor or α1-AR antagonist. PE also reduced p65 nuclear translocation, but this suppression is not blocked by PKC inhibition. Treatment with U0126 (a specific ERK1/2 inhibitor) reversed the effects of PE on p38MAPK phosphorylation. Our results demonstrate that cardiac endothelial α1-AR activation prevents sepsis-induced myocardial dysfunction in mice by inhibiting the endothelial injury via PKC-ERK/p38MAPK signaling pathway and a PKC-independent inhibition of p65 nuclear translocation. These findings offer a new perspective for septic patients with cardiac dysfunction by inhibiting cardiac endothelial cell injury through α1-AR activation.
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Affiliation(s)
- Tian Tian
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Qing Yu
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Duomeng Yang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Xue Zhang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Chanjuan Zhang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Jianling Li
- Department of Anesthesiology, The First Affiliated Hospital, Jinan University, Guangzhou 510632, Guangdong, China
| | - Tao Luo
- Department of Pathophysiology, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - Keke Zhang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Xiuxiu Lv
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Yiyang Wang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Huadong Wang
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China
| | - Hongmei Li
- Department of Pathophysiology, School of Medicine, Jinan University, Guangzhou 510632, China.
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Mi Y, Yu H, PingWang, Miao Y, Teng X, Jin S, Xiao L, Xue H, Tian D, Guo Q, Wu Y. Tyrosine hydroxylase-positive neurons in the rostral ventrolateral medulla mediate sympathetic activation in sepsis. Life Sci 2024:123118. [PMID: 39384147 DOI: 10.1016/j.lfs.2024.123118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 09/26/2024] [Accepted: 10/05/2024] [Indexed: 10/11/2024]
Abstract
AIM Sepsis results in high mortality and is associated with organ dysfunction caused by infection. The present study aimed to elucidate whether early-stage sympathetic activation is associated with the prognosis of sepsis and its possible mechanisms. METHODS Patients with sepsis and healthy controls were included. Sepsis in rats was induced by lipopolysaccharide. Dexmedetomidine, a α2-adrenergic receptor agonist, was used in patients and rats with sepsis to evaluate the role of the sympathetic nervous system in sepsis. Holter monitoring was used to detect heart rate variability, while plasma samples were obtained to measure levels of norepinephrine and inflammatory markers. Mean arterial pressure, heart rate, and renal sympathetic nerve activity were recorded. Immunofluorescence was used to detect the activation of neurons in the rostral ventrolateral medulla (RVLM). RESULTS In patients with sepsis, plasma levels of norepinephrine and interleukin-1β were higher compared with those in controls and positively correlated with acute physiology and chronic health evaluation (APACHEII). SDNN and SDANN were significantly reduced as well as negatively correlated with APACHEII. Meanwhile, rats with sepsis showed increased of sympathetic outflow and plasma levels of norepinephrine, with increased c-fos levels in the RVLM. Treatment with dexmedetomidine could improve prognosis. Lesion of tyrosine hydroxylase-positive neurons in the RVLM attenuated sympathetic activation and target organs damage in septic rats as well as improved survival. CONCLUSION The results suggest that tyrosine hydroxylase-positive neurons in the RVLM might contribute to the prognosis of sepsis via activation of the sympathetic nervous system, while dexmedetomidine could ameliorate sepsis via inhibiting sympathetic activation.
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Affiliation(s)
- Yuan Mi
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China; Department of Emergency, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Hao Yu
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - PingWang
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Yuxin Miao
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Xu Teng
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Sheng Jin
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Lin Xiao
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Hongmei Xue
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Danyang Tian
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Qi Guo
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China; Experimental Center for Teaching, Hebei Medical University, Shijiazhuang 050017, China; Hebei Key Laboratory of Cardiovascular Homeostasis and Aging, 050017 Hebei, China.
| | - Yuming Wu
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang 050017, China; The Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Hebei Key Laboratory of Cardiovascular Homeostasis and Aging, 050017 Hebei, China.
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3
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Chan JSF, Tabatabaei Dakhili SA, Lorenzana-Carrillo MA, Gopal K, Pulente SM, Greenwell AA, Yang K, Saed CT, Stenlund MJ, Ferrari SR, Mangra-Bala IA, Shafaati T, Bhat RK, Eaton F, Overduin M, Jørgensen SB, Steinberg GR, Mulvihill EE, Sutendra G, Ussher JR. Growth differentiation factor 15 alleviates diastolic dysfunction in mice with experimental diabetic cardiomyopathy. Cell Rep 2024; 43:114573. [PMID: 39093701 DOI: 10.1016/j.celrep.2024.114573] [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: 03/25/2024] [Revised: 06/19/2024] [Accepted: 07/17/2024] [Indexed: 08/04/2024] Open
Abstract
Growth differentiation factor 15 (GDF15) is a peptide with utility in obesity, as it decreases appetite and promotes weight loss. Because obesity increases the risk for type 2 diabetes (T2D) and cardiovascular disease, it is imperative to understand the cardiovascular actions of GDF15, especially since elevated GDF15 levels are an established biomarker for heart failure. As weight loss should be encouraged in the early stages of obesity-related prediabetes/T2D, where diabetic cardiomyopathy is often present, we assessed whether treatment with GDF15 influences its pathology. We observed that GDF15 treatment alleviates diastolic dysfunction in mice with T2D independent of weight loss. This cardioprotection was associated with a reduction in cardiac inflammation, which was likely mediated via indirect actions, as direct treatment of adult mouse cardiomyocytes and differentiated THP-1 human macrophages with GDF15 failed to alleviate lipopolysaccharide-induced inflammation. Therapeutic manipulation of GDF15 action may thus have utility for both obesity and diabetic cardiomyopathy.
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Affiliation(s)
- Jordan S F Chan
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Seyed Amirhossein Tabatabaei Dakhili
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Maria Areli Lorenzana-Carrillo
- Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada; Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - Keshav Gopal
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Serena M Pulente
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Heart Institute, Ottawa, ON K1Y 4W7, Canada
| | - Amanda A Greenwell
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Kunyan Yang
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Christina T Saed
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Magnus J Stenlund
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Sally R Ferrari
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Indiresh A Mangra-Bala
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Tanin Shafaati
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Rakesh K Bhat
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Farah Eaton
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Michael Overduin
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | | | - Gregory R Steinberg
- Centre for Metabolism, Obesity, Diabetes Research, McMaster University, Hamilton, ON L8S 4K1, Canada; Division of Endocrinology and Metabolism, Department of Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Erin E Mulvihill
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada; University of Ottawa Heart Institute, Ottawa, ON K1Y 4W7, Canada
| | - Gopinath Sutendra
- Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada; Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada
| | - John R Ussher
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; Alberta Diabetes Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada; Cardiovascular Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada.
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Wang H, Wang J, Cui H, Fan C, Xue Y, Liu H, Li H, Li J, Li H, Sun Y, Wang W, Song J, Jiang C, Xu M. Inhibition of fatty acid uptake by TGR5 prevents diabetic cardiomyopathy. Nat Metab 2024; 6:1161-1177. [PMID: 38698281 PMCID: PMC11199146 DOI: 10.1038/s42255-024-01036-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 03/26/2024] [Indexed: 05/05/2024]
Abstract
Diabetic cardiomyopathy is characterized by myocardial lipid accumulation and cardiac dysfunction. Bile acid metabolism is known to play a crucial role in cardiovascular and metabolic diseases. Takeda G-protein-coupled receptor 5 (TGR5), a major bile acid receptor, has been implicated in metabolic regulation and myocardial protection. However, the precise involvement of the bile acid-TGR5 pathway in maintaining cardiometabolic homeostasis remains unclear. Here we show decreased plasma bile acid levels in both male and female participants with diabetic myocardial injury. Additionally, we observe increased myocardial lipid accumulation and cardiac dysfunction in cardiomyocyte-specific TGR5-deleted mice (both male and female) subjected to a high-fat diet and streptozotocin treatment or bred on the diabetic db/db genetic background. Further investigation reveals that TGR5 deletion enhances cardiac fatty acid uptake, resulting in lipid accumulation. Mechanistically, TGR5 deletion promotes localization of CD36 on the plasma membrane through the upregulation of CD36 palmitoylation mediated by the palmitoyl acyltransferase DHHC4. Our findings indicate that the TGR5-DHHC4 pathway regulates cardiac fatty acid uptake, which highlights the therapeutic potential of targeting TGR5 in the management of diabetic cardiomyopathy.
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Affiliation(s)
- Hu Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China
| | - Jiaxing Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China
| | - Hao Cui
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Chenyu Fan
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China
| | - Yuzhou Xue
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China
| | - Huiying Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Hui Li
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China
| | - Jianping Li
- Department of Cardiology, Peking University First Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Houhua Li
- State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Ying Sun
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China
| | - Wengong Wang
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Jiangping Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College (CAMS & PUMC), Beijing, China
| | - Changtao Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China.
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China.
| | - Ming Xu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China.
- Research Unit of Medical Science Research Management/Basic and Clinical Research of Metabolic Cardiovascular Diseases, Chinese Academy of Medical Sciences, Beijing, China.
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5
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Hu Y, Dai S, Zhao L, Zhao L. Research progress on the improvement of cardiovascular diseases through the autonomic nervous system regulation of the NLRP3 inflammasome pathway. Front Cardiovasc Med 2024; 11:1369343. [PMID: 38650918 PMCID: PMC11034522 DOI: 10.3389/fcvm.2024.1369343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/28/2024] [Indexed: 04/25/2024] Open
Abstract
Cardiovascular disease stands as a leading global cause of mortality. Nucleotide-binding Oligomerization Domain-like Receptor Protein 3 (NLRP3) inflammasome is widely acknowledged as pivotal factor in specific cardiovascular disease progression, such as myocardial infarction, heart failure. Recent investigations underscore a close interconnection between autonomic nervous system (ANS) dysfunction and cardiac inflammation. It has been substantiated that sympathetic nervous system activation and vagus nerve stimulation (VNS) assumes critical roles withinNLRP3 inflammasome pathway regulation, thereby contributing to the amelioration of cardiac injury and enhancement of prognosis in heart diseases. This article reviews the nexus between NLRP3 inflammasome and cardiovascular disorders, elucidating the modulatory functions of the sympathetic and vagus nerves within the ANS with regard to NLRP3 inflammasome. Furthermore, it delves into the potential therapeutic utility of NLRP3 inflammasome to be targeted by VNS. This review serves as a valuable reference for further exploration into the potential mechanisms underlying VNS in the modulation of NLRP3 inflammasome.
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Affiliation(s)
| | | | - Lulu Zhao
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ling Zhao
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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6
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Ding XY, Zhang H, Qiu YM, Xie MD, Wang H, Xiong ZY, Li TT, He CN, Dong W, Tang XL. Cardioprotective Potential of Cymbopogon citratus Essential Oil against Isoproterenol-induced Cardiomyocyte Hypertrophy: Possible Involvement of NLRP3 Inflammasome and Oxidative Phosphorylation Complex Subunits. Curr Med Sci 2024; 44:450-461. [PMID: 38639827 DOI: 10.1007/s11596-024-2851-9] [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: 06/07/2023] [Accepted: 02/25/2024] [Indexed: 04/20/2024]
Abstract
OBJECTIVE Cymbopogon citratus (DC.) Stapf is a medicinal and edible herb that is widely used for the treatment of gastric, nervous and hypertensive disorders. In this study, we investigated the cardioprotective effects and mechanisms of the essential oil, the main active ingredient of Cymbopogon citratus, on isoproterenol (ISO)-induced cardiomyocyte hypertrophy. METHODS The compositions of Cymbopogon citratus essential oil (CCEO) were determined by gas chromatography-mass spectrometry. Cardiomyocytes were pretreated with 16.9 µg/L CCEO for 1 h followed by 10 µmol/L ISO for 24 h. Cardiac hypertrophy-related indicators and NLRP3 inflammasome expression were evaluated. Subsequently, transcriptome sequencing (RNA-seq) and target verification were used to further explore the underlying mechanism. RESULTS Our results showed that the CCEO mainly included citronellal (45.66%), geraniol (23.32%), and citronellol (10.37%). CCEO inhibited ISO-induced increases in cell surface area and protein content, as well as the upregulation of fetal gene expression. Moreover, CCEO inhibited ISO-induced NLRP3 inflammasome expression, as evidenced by decreased lactate dehydrogenase content and downregulated mRNA levels of NLRP3, ASC, CASP1, GSDMD, and IL-1β, as well as reduced protein levels of NLRP3, ASC, pro-caspase-1, caspase-1 (p20), GSDMD-FL, GSDMD-N, and pro-IL-1β. The RNA-seq results showed that CCEO inhibited the increase in the mRNA levels of 26 oxidative phosphorylation complex subunits in ISO-treated cardiomyocytes. Our further experiments confirmed that CCEO suppressed ISO-induced upregulation of mt-Nd1, Sdhd, mt-Cytb, Uqcrq, and mt-Atp6 but had no obvious effects on mt-Col expression. CONCLUSION CCEO inhibits ISO-induced cardiomyocyte hypertrophy through the suppression of NLRP3 inflammasome expression and the regulation of several oxidative phosphorylation complex subunits.
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Affiliation(s)
- Xiao-Yun Ding
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Hao Zhang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Yu-Mei Qiu
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Meng-Die Xie
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Hu Wang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Zheng-Yu Xiong
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Ting-Ting Li
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Chun-Ni He
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China
| | - Wei Dong
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, 330004, China.
| | - Xi-Lan Tang
- School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
- Key Laboratory of Modern Preparation of Chinese Medicine, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, 330004, China.
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Nanchang, 330013, China.
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7
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Lu X, Ji Q, Pan H, Feng Y, Ye D, Gan L, Wan J, Ye J. IL-23p19 deficiency reduces M1 macrophage polarization and improves stress-induced cardiac remodeling by alleviating macrophage ferroptosis in mice. Biochem Pharmacol 2024; 222:116072. [PMID: 38387530 DOI: 10.1016/j.bcp.2024.116072] [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: 11/01/2023] [Revised: 01/24/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Interleukin-23p19 (IL-23p19) has been demonstrated to be involved in the occurrence and development of cardiovascular diseases such as myocardial infarction and atherosclerosis. This study aimed to examine whether IL-23p19 regulates cardiac remodeling processes and explore its possible mechanisms. METHODS AND RESULTS Transverse aortic constriction was performed to construct a mouse cardiac remodeling model, and sham surgery was used as a control. The results showed that IL-23p19 expression was increased in the heart after surgery and may be mainly produced by cardiac macrophages. Knockout of IL-23p19 attenuated M1 macrophage polarization, reduced ferroptosis, improved the process of cardiac remodeling and alleviated cardiac dysfunction in TAC mice. Cell culture experiments found that macrophages were the main cause of ferroptosis when phenylephrine (PE) was added, and blocking ferroptosis with ferrostatin-1 (Fer-1), a ferroptosis inhibitor, significantly inhibited M1 macrophage polarization. Treatment with Fer-1 also improved cardiac remodeling and alleviated cardiac dysfunction in IL-23p19-/- mice subjected to TAC surgery. Finally, TAC IL-23p19-/- mice that were administered macrophages isolated from WT mice exhibited an increased proportion of M1 macrophages and aggravated cardiac remodeling, and these effects were reversed when Fer-1 was administered. CONCLUSION Knockout of IL-23p19 may attenuate M1 macrophage polarization to improve the cardiac remodeling process by reducing macrophage ferroptosis, and IL-23p19 may be a potential target for the prevention and treatment of cardiac remodeling.
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Affiliation(s)
- Xiyi Lu
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Qingwei Ji
- Department of Cardiology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China; Institute of Cardiovascular Diseases, Guangxi Academy of Medical Sciences, Nanning, China
| | - Heng Pan
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Yongqi Feng
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Di Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Liren Gan
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Jun Wan
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China.
| | - Jing Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute, Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, China.
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8
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Wei J, Leng L, Sui Y, Song S, Owusu FB, Li X, Cao Y, Li P, Wang H, Li R, Yang W, Gao X, Wang Q. Phenolic acids from Prunella vulgaris alleviate cardiac remodeling following myocardial infarction partially by suppressing NLRP3 activation. Phytother Res 2024; 38:384-399. [PMID: 37992723 DOI: 10.1002/ptr.8024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 11/24/2023]
Abstract
Acute myocardial infarction (MI) is one of the leading causes of mortality around the world. Prunella vulgaris (Xia-Ku-Cao in Chinese) is used in traditional Chinese medicine practice for the treatment of cardiovascular diseases. However, its active ingredients and mechanisms of action on cardiac remodeling following MI remain unknown. In this study, we investigated the cardioprotective effect of P. vulgaris on MI rat models. MI rats were treated with aqueous extract of P. vulgaris or phenolic acids from P. vulgaris, including caffeic acid, ursolic acid or rosmarinic acid, 1 day after surgery and continued for the following 28 days. Then the cardioprotective effect, such as cardiac function, inflammatory status, and fibrosis areas were evaluated. RNA-sequencing (RNA-seq) analysis, real-time polymerase chain reaction (PCR), western blotting, and ELISA were used to explore the underlying mechanism. In addition, ultra-high performance liquid chromatography/mass spectrometer analysis was used to identify the chemicals from P. vulgaris. THP-1NLRP3-GFP cells were used to confirm the inhibitory effect of P. vulgaris and phenolic acids on the expression and activity of NLRP3. We found that P. vulgaris significantly improved cardiac function and reduced infarct size. Meanwhile, P. vulgaris protected cardiomyocyte against apoptosis, evidenced by increasing the expression of anti-apoptosis protein Bcl-2 in the heart and decreasing lactate dehydrogenase (LDH) levels in serum. Results from RNA-seq revealed that the therapeutic effect of P. vulgaris might relate to NLRP3-mediated inflammatory response. Results from real-time PCR and western blotting confirmed that P. vulgaris suppressed NLRP3 expression in MI heart. We also found that P. vulgaris suppressed NLRP3 expression and the secretion of HMGB1, IL-1β, and IL-18 in THP-1NLRP3-GFP cells. Further studies indicated that the active components of P. vulgaris were three phenolic acids, those were caffeic acid, ursolic acid, and rosmarinic acid. These phenolic acids inhibited LPS-induced NLRP3 expression and activity in THP-1 cells, and improved cardiac function, suppressed inflammatory aggregation and fibrosis in MI rat models. In conclusion, our study demonstrated that P. vulgaris and phenolic acids from P. vulgaris, including caffeic acid, ursolic acid, and rosmarinic acid, could improve cardiac function and protect cardiomyocytes from ischemia injury during MI. The mechanism was partially related to inhibiting NLRP3 activation.
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Affiliation(s)
- Jinna Wei
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Key Lab of Pharmacological Traditional Chinese Medicine Formulae, Ministry of Education, Tianjin, China
| | - Ling Leng
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Key Lab of Pharmacological Traditional Chinese Medicine Formulae, Ministry of Education, Tianjin, China
- State Key Laboratory of Component-Based Chinese Medicine, Ministry of Education, Tianjin, China
| | - Yunchan Sui
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shaofei Song
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Felix Boahen Owusu
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xue Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-Based Chinese Medicine, Ministry of Education, Tianjin, China
| | - Yu Cao
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Peijie Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hongda Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Ruiqiao Li
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-Based Chinese Medicine, Ministry of Education, Tianjin, China
| | - Wenzhi Yang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Key Lab of Pharmacological Traditional Chinese Medicine Formulae, Ministry of Education, Tianjin, China
- State Key Laboratory of Component-Based Chinese Medicine, Ministry of Education, Tianjin, China
| | - Xiumei Gao
- Key Lab of Pharmacological Traditional Chinese Medicine Formulae, Ministry of Education, Tianjin, China
| | - Qilong Wang
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Key Lab of Pharmacological Traditional Chinese Medicine Formulae, Ministry of Education, Tianjin, China
- State Key Laboratory of Component-Based Chinese Medicine, Ministry of Education, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
- Endocrinology Department, Fourth Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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9
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Li W, Zhu S, Liu J, Liu Z, Zhou H, Zhang Q, Yang Y, Chen L, Guo X, Zhang T, Meng L, Chai D, Tang G, Li X, Yang C. Zanubrutinib Ameliorates Cardiac Fibrosis and Inflammation Induced by Chronic Sympathetic Activation. Molecules 2023; 28:6035. [PMID: 37630287 PMCID: PMC10458081 DOI: 10.3390/molecules28166035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/19/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
(1) Background: Heart failure (HF) is the final stage of multiple cardiac diseases, which have now become a severe public health problem worldwide. β-Adrenergic receptor (β-AR) overactivation is a major pathological factor associated with multiple cardiac diseases and mediates cardiac fibrosis and inflammation. Previous research has demonstrated that Bruton's tyrosine kinase (BTK) mediated cardiac fibrosis by TGF-β related signal pathways, indicating that BTK was a potential drug target for cardiac fibrosis. Zanubrutinib, a second-generation BTK inhibitor, has shown anti-fibrosis effects in previous research. However, it is unclear whether Zanubrutinib can alleviate cardiac fibrosis induced by β-AR overactivation; (2) Methods: In vivo: Male C57BL/6J mice were treated with or without the β-AR agonist isoproterenol (ISO) to establish a cardiac fibrosis animal model; (3) Results: In vivo: Results showed that the BTK inhibitor Zanubrutinib (ZB) had a great effect on cardiac fibrosis and inflammation induced by β-AR. In vitro: Results showed that ZB alleviated β-AR-induced cardiac fibroblast activation and macrophage pro-inflammatory cytokine production. Further mechanism studies demonstrated that ZB inhibited β-AR-induced cardiac fibrosis and inflammation by the BTK, STAT3, NF-κB, and PI3K/Akt signal pathways both in vivo and in vitro; (4) Conclusions: our research provides evidence that ZB ameliorates β-AR-induced cardiac fibrosis and inflammation.
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Affiliation(s)
- Wenqi Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Shuwen Zhu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Jing Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Zhigang Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Honggang Zhou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
- Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
| | - Qianyi Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Yue Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Li Chen
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Xiaowei Guo
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Tiantian Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Lingxin Meng
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Dan Chai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Guodong Tang
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiaohe Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, China; (W.L.); (S.Z.); (J.L.); (Z.L.); (H.Z.); (Q.Z.); (Y.Y.); (L.C.); (X.G.); (T.Z.); (L.M.); (D.C.)
- Tianjin International Joint Academy of Biomedicine, Tianjin 300457, China
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10
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Zhang D, Zhao MM, Wu JM, Wang R, Xue G, Xue YB, Shao JQ, Zhang YY, Dong ED, Li ZY, Xiao H. Dual-omics reveals temporal differences in acute sympathetic stress-induced cardiac inflammation following α 1 and β-adrenergic receptors activation. Acta Pharmacol Sin 2023; 44:1350-1365. [PMID: 36737635 PMCID: PMC10310713 DOI: 10.1038/s41401-022-01048-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 12/28/2022] [Indexed: 02/05/2023] Open
Abstract
Sympathetic stress is prevalent in cardiovascular diseases. Sympathetic overactivation under strong acute stresses triggers acute cardiovascular events including myocardial infarction (MI), sudden cardiac death, and stress cardiomyopathy. α1-ARs and β-ARs, two dominant subtypes of adrenergic receptors in the heart, play a significant role in the physiological and pathologic regulation of these processes. However, little is known about the functional similarities and differences between α1- and β-ARs activated temporal responses in stress-induced cardiac pathology. In this work, we systematically compared the cardiac temporal genome-wide profiles of acute α1-AR and β-AR activation in the mice model by integrating transcriptome and proteome. We found that α1- and β-AR activations induced sustained and transient inflammatory gene expression, respectively. Particularly, the overactivation of α1-AR but not β-AR led to neutrophil infiltration at one day, which was closely associated with the up-regulation of chemokines, activation of NF-κB pathway, and sustained inflammatory response. Furthermore, there are more metabolic disorders under α1-AR overactivation compared with β-AR overactivation. These findings provide a new therapeutic strategy that, besides using β-blocker as soon as possible, blocking α1-AR within one day should also be considered in the treatment of acute stress-associated cardiovascular diseases.
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Affiliation(s)
- Di Zhang
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Ming-Ming Zhao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China
| | - Ji-Min Wu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China
| | - Rui Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China
| | - Gang Xue
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - Yan-Bo Xue
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Ji-Qi Shao
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China
| | - You-Yi Zhang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China
| | - Er-Dan Dong
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China.
| | - Zhi-Yuan Li
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China.
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China.
| | - Han Xiao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research; Haihe Laboratory of Cell Ecosystem, Beijing, 100191, China.
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11
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Liu X, Wang Y, Li J, Wu B, Wang S, Guo Q, Liu Y. To study the protective effect of Huangqi Baihe Granules on Radiation brain injury based on network pharmacology and experiment. JOURNAL OF ETHNOPHARMACOLOGY 2023:116610. [PMID: 37150423 DOI: 10.1016/j.jep.2023.116610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 05/02/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Huangqi baihe Granules (HQBHG), which is a key Chinese medical prescription, has a remarkable efficacy in oxidative stress and inflammation. Nevertheless, the therapeutic effect on Radiation brain injury (RBI) has rarely been studied. AIM OF THE STUDY The study aimed to verify the effect of HQBHG against RBI and explore its potential mechanism. METHODS The potential targets and mechanisms of HQBHG against RBI were predicted by network pharmacology and verified by established rat model of RBI Firstly, the therapeutic effect of HQBHG in RBI was confirmed by water maze test, HE staining and Enzyme-linked immunosorbent assay (ELISA). Secondly, the potential critical anti-RBI pathway of HQBHG was further explored by water maze, HE staining, immunofluorescence assays, ELISA and western blot. RESULTS A total of 43 HQBHG anti-RBI targets were obtained. Gene Ontology (Go) and Kyoto Encyclopedia of Genes and Genomes (KEGG) functional annotations showed that the treatment of HQBHG in RBI might be mainly related to oxidative stress, inflammation and PI3K/AKT pathway. Experimental studies have indicated that HQBHG can improve spatial learning and memory ability, alleviate pathological damage of brain tissue in RBI of rats. HQBHG also can down-regulate the levels of IL-1β, TNF-α, ROS and MDA, meanwhile, GSH was significantly up-regulated. In addition, the HQBHG can increase the protein expression phosphorylations PI3K (p-PI3K), phosphorylations AKT(p-AKT) and Nrf2 in the brain tissue of RBI. CONCLUSION HQBHG may alleviated RBI by regulated oxidative stress and inflammatory response through PI3K/AKT/Nrf2 pathway.
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Affiliation(s)
- Xiuzhu Liu
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou, 730000, Gansu Province, China.
| | - Yanru Wang
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou, 730000, Gansu Province, China.
| | - Jiawei Li
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou, 730000, Gansu Province, China.
| | - Bingbing Wu
- 940th Hospital of Chinese People 's Liberation Army Joint Support Force, Lanzhou, 730050, Gansu Province, China.
| | - Siyu Wang
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou, 730000, Gansu Province, China.
| | - Qingyang Guo
- 940th Hospital of Chinese People 's Liberation Army Joint Support Force, Lanzhou, 730050, Gansu Province, China.
| | - Yongqi Liu
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, Lanzhou, 730000, Gansu Province, China.
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12
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Wijaya LK, Morici MV, Stumbles PA, Finch PM, Drummond PD. Stimulation of alpha-1 adrenoceptors may intensify cutaneous inflammation in complex regional pain syndrome. Pain 2023; 164:771-781. [PMID: 35994594 DOI: 10.1097/j.pain.0000000000002764] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 08/09/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT Alpha-1 adrenoceptors are overexpressed in the epidermis of a subgroup of patients with complex regional pain syndrome (CRPS). Activating α 1 -adrenoceptors in epidermal cells increases production of the proinflammatory cytokine interleukin-6 (IL-6), a mediator of inflammation. To investigate whether this might exacerbate inflammation in CRPS, primary keratinocytes or dermal fibroblasts were cultured from skin biopsies obtained from the affected limb of 25 patients and a similar site in 28 controls. The fundamental proinflammatory cytokine, tumor necrosis factor alpha, was administered for 24 hours to initiate inflammation. After this, cells were incubated for 6 hours with the α 1 -adrenoceptor agonist phenylephrine. Exposure to tumor necrosis factor alpha induced proinflammatory cytokine mRNA production and protein secretion in keratinocytes and fibroblasts and enhanced α 1B -adrenoceptor mRNA expression in keratinocytes. Additional stimulation of α 1 adrenoceptors with phenylephrine increased the production of IL-6 mRNA and protein secretion in both cell types. Under all conditions, gene and protein α 1 -adrenoceptor levels and cytokine gene expression and protein secretion were similar, overall, in patients and controls, except for abnormally high α 1 -adrenoceptor protein levels in the keratinocytes of 3 of 17 patients. These findings suggest that persistent inflammation in CRPS is not due to dysfunction of skin cells but is a normal response to extrinsic signals. After α 1 -adrenoceptor stimulation of keratinocytes, increases in IL-6 mRNA but not protein were proportional to basal α 1 -adrenoceptor protein levels. Skin cells play an important role in persistent inflammation in CRPS. Potentially, a positive feedback loop between α 1 -adrenoceptors and IL-6 production in skin cells contributes to this inflammatory state.
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Affiliation(s)
- Linda K Wijaya
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Australia
- Telethon Kids Institute, Perth, Australia
| | - Michael V Morici
- Telethon Kids Institute, Perth, Australia
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Philip A Stumbles
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Australia
- Telethon Kids Institute, Perth, Australia
| | - Philip M Finch
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Australia
| | - Peter D Drummond
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Australia
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13
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Zhang WJ, Li KY, Lan Y, Zeng HY, Chen SQ, Wang H. NLRP3 Inflammasome: A key contributor to the inflammation formation. Food Chem Toxicol 2023; 174:113683. [PMID: 36809826 DOI: 10.1016/j.fct.2023.113683] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/04/2023] [Accepted: 02/17/2023] [Indexed: 02/21/2023]
Abstract
Inflammation is an important part of the development of various organ diseases. The inflammasome, as an innate immune receptor, plays an important role in the formation of inflammation. Among various inflammasomes, the NLRP3 inflammasome is the most well studied. The NLRP3 inflammasome is composed of skeletal protein NLRP3, apoptosis-associated speck-like protein (ASC) and pro-caspase-1. There are three types of activation pathways: (1) "classical" activation pathway; (2) "non-canonical" activation pathway; (3) "alternative" activation pathway. The activation of NLRP3 inflammasome is involved in many inflammatory diseases. A variety of factors (such as genetic factors, environmental factors, chemical factors, viral infection, etc.) have been proved to activate NLRP3 inflammasome and promote the inflammatory response of the lung, heart, liver, kidney and other organs in the body. Especially, the mechanism of NLRP3 inflammation and its related molecules in its associated diseases remains not to be summarized, namely they may promote or delay inflammatory diseases in different cells and tissues. This article reviews the structure and function of the NLRP3 inflammasome and its role in various inflammations, including inflammations caused by chemically toxic substances.
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Affiliation(s)
- Wen-Juan Zhang
- Department of Immunology, School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China; Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China.
| | - Ke-Yun Li
- Department of Immunology, School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China.
| | - Yi Lan
- Department of Immunology, School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China.
| | - Han-Yi Zeng
- Department of Genetics, School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China.
| | - Shui-Qin Chen
- Department of Immunology, School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, PR China.
| | - Hui Wang
- Henan Key Laboratory of Immunology and Targeted Drugs, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, PR China.
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14
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Irelan D, Boyd A, Fiedler E, Lochmaier P, McDonough W, Aragon IV, Rachek L, Abou Saleh L, Richter W. Acute PDE4 Inhibition Induces a Transient Increase in Blood Glucose in Mice. Int J Mol Sci 2023; 24:ijms24043260. [PMID: 36834669 PMCID: PMC9963939 DOI: 10.3390/ijms24043260] [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: 12/22/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
cAMP-phosphodiesterase 4 (PDE4) inhibitors are currently approved for the treatment of inflammatory diseases. There is interest in expanding the therapeutic application of PDE4 inhibitors to metabolic disorders, as their chronic application induces weight loss in patients and animals and improves glucose handling in mouse models of obesity and diabetes. Unexpectedly, we have found that acute PDE4 inhibitor treatment induces a temporary increase, rather than a decrease, in blood glucose levels in mice. Blood glucose levels in postprandial mice increase rapidly upon drug injection, reaching a maximum after ~45 min, and returning to baseline within ~4 h. This transient blood glucose spike is replicated by several structurally distinct PDE4 inhibitors, suggesting that it is a class effect of PDE4 inhibitors. PDE4 inhibitor treatment does not reduce serum insulin levels, and the subsequent injection of insulin potently reduces PDE4 inhibitor-induced blood glucose levels, suggesting that the glycemic effects of PDE4 inhibition are independent of changes in insulin secretion and/or sensitivity. Conversely, PDE4 inhibitors induce a rapid reduction in skeletal muscle glycogen levels and potently inhibit the uptake of 2-deoxyglucose into muscle tissues. This suggests that reduced glucose uptake into muscle tissue is a significant contributor to the transient glycemic effects of PDE4 inhibitors in mice.
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Affiliation(s)
- Daniel Irelan
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Abigail Boyd
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Edward Fiedler
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Peter Lochmaier
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Will McDonough
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Ileana V. Aragon
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Lyudmila Rachek
- Department of Pharmacology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Lina Abou Saleh
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Wito Richter
- Department of Biochemistry & Molecular Biology and Center for Lung Biology, Whiddon College of Medicine, University of South Alabama, Mobile, AL 36688, USA
- Correspondence:
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15
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Wei YZ, Yang S, Li W, Tang YH. Gefapixant, a Novel P2X3 Antagonist, Protects against Post Myocardial Infarction Cardiac Dysfunction and Remodeling Via Suppressing NLRP3 Inflammasome. Curr Med Sci 2023; 43:58-68. [PMID: 36622629 DOI: 10.1007/s11596-022-2658-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 04/19/2022] [Indexed: 01/10/2023]
Abstract
OBJECTIVE The ATP responsive P2 purinergic receptors can be subdivided into metabotropic P2X family and ionotropic P2Y family. Among these, P2X3 is a type of P2X receptor which is specifically expressed on nerves, especially on pre-ganglionic sensory fibers. This study investigates whether gefapixant possesses the potential of inhibiting cardiac sympathetic hypersensitivity to protect against cardiac remodeling in the context of myocardial infarction. METHODS The Sprague-Dawley rats were divided randomly into three groups: sham group-myocardial infarction group, and myocardial infarction with gefapixant treatment group. Myocardial infarction was induced by left anterior descending branch ligation. The gefapixant solution was intraperitoneally injected each time per day for 7 days and the appropriate dosage of gefapixant was determined according to the results of hematoxylin-eosin (HE) staining and myocardial injury biomarkers. Conditions of cardiac function were assessed by echocardiograph and cardiac fibrosis was evaluated by Western blotting and immunofluorescence staining of collagen I and collagen III. The sympathetic innervation was detected by norepinephrine concentration (pg/mL), in-vivo electrophysiology, and typical sympathetic biomarkers. Inflammatory cell infiltration was shown from immunofluorescence staining and pro-inflammatory signaling pathway activation was checked by immunohistology, quantitative realtime PCR (qPCR) and Western blotting. RESULTS It was found that gefapixant injection of 10 mg/kg per day had the highest dosage-efficacy ratio. Furthermore, gefapixant treatment improved cardiac pump function as shown by increased LVEF and LVFS, and decreased LVIDd and LVIDs. The expression levels of collagen I and collagen III, and TNF-α were all decreased by P2X3 inhibition. Mechanistically, the decreased activation of nucleotide-binding and oligomerization domain-like receptors family pyrin-domain-containing 3 (NLRP3) inflammasome and subsequent cleavage of caspase-1 which modulated interleukin-1β (IL-1β) and IL-18 level in heart after gefapixant treatment were associated with the suppressed cardiac inflammation. CONCLUSION It is suggested that P2X3 inhibition by gefapixant ameliorates post-infarct autonomic nervous imbalance, cardiac dysfunction, and remodeling possibly via inactivating NLRP3 inflammasome.
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Affiliation(s)
- Yan-Zhao Wei
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Shuang Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Wei Li
- Department of Cardiology, Wuhan No. 1 Hospital, Wuhan Hospital of Traditional Chinese and Western Medicine, Wuhan, 430022, China.
| | - Yan-Hong Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China. .,Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, China. .,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China.
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16
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Bo JH, Wang JX, Wang XL, Jiao Y, Jiang M, Chen JL, Hao WY, Chen Q, Li YH, Ma ZL, Zhu GQ. Dexmedetomidine Attenuates Lipopolysaccharide-Induced Sympathetic Activation and Sepsis via Suppressing Superoxide Signaling in Paraventricular Nucleus. Antioxidants (Basel) 2022; 11:antiox11122395. [PMID: 36552603 PMCID: PMC9774688 DOI: 10.3390/antiox11122395] [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: 10/08/2022] [Revised: 11/15/2022] [Accepted: 11/29/2022] [Indexed: 12/07/2022] Open
Abstract
Sympathetic overactivity contributes to the pathogenesis of sepsis. The selective α2-adrenergic receptor agonist dexmedetomidine (DEX) is widely used for perioperative sedation and analgesia. We aimed to determine the central roles and mechanisms of DEX in attenuating sympathetic activity and inflammation in sepsis. Sepsis was induced by a single intraperitoneal injection of lipopolysaccharide (LPS) in rats. Effects of DEX were investigated 24 h after injection of LPS. Bilateral microinjection of DEX in the paraventricular nucleus (PVN) attenuated LPS-induced sympathetic overactivity, which was attenuated by the superoxide dismutase inhibitor DETC, cAMP analog db-cAMP or GABAA receptor antagonist gabazine. Superoxide scavenger tempol, NADPH oxidase inhibitor apocynin, adenylate cyclase inhibitor SQ22536 or PKA inhibitor Rp-cAMP caused similar effects to DEX in attenuating LPS-induced sympathetic activation. DEX inhibited LPS-induced superoxide and cAMP production, as well as NADPH oxidase, adenylate cyclase and PKA activation. The roles of DEX in reducing superoxide production and NADPH oxidase activation were attenuated by db-cAMP or gabazine. Intravenous infusion of DEX inhibited LPS-induced sympathetic overactivity, NOX activation, superoxide production, TNF-α and IL-1β upregulation in the PVN and plasma, as well as lung and renal injury, which were attenuated by the PVN microinjection of yohimbine and DETC. We conclude that activation of α2-adrenergic receptors with DEX in the PVN attenuated LPS-induced sympathetic overactivity by reducing NADPH oxidase-dependent superoxide production via both inhibiting adenylate cyclase-cAMP-PKA signaling and activating GABAA receptors. The inhibition of NADPH oxidase-dependent superoxide production in the PVN partially contributes to the roles of intravenous infusion of DEX in attenuating LPS-induced sympathetic activation, oxidative stress and inflammation.
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Affiliation(s)
- Jin-Hua Bo
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
- Department of Anesthesiology, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Jing-Xiao Wang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
| | - Xiao-Li Wang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
| | - Yang Jiao
- Department of Anesthesiology, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Ming Jiang
- Department of Anesthesiology, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - Jun-Liu Chen
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
| | - Wen-Yuan Hao
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
| | - Qi Chen
- Department of Pathophysiology, Nanjing Medical University, Nanjing 211166, China
| | - Yue-Hua Li
- Department of Pathophysiology, Nanjing Medical University, Nanjing 211166, China
| | - Zheng-Liang Ma
- Department of Anesthesiology, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
- Correspondence: (Z.-L.M.); (G.-Q.Z.)
| | - Guo-Qing Zhu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China
- Correspondence: (Z.-L.M.); (G.-Q.Z.)
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17
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Psychological stress: neuroimmune roles in periodontal disease. Odontology 2022:10.1007/s10266-022-00768-8. [DOI: 10.1007/s10266-022-00768-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/12/2022] [Indexed: 11/29/2022]
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18
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Mai L, Jia S, Liu Q, Chu Y, Liu J, Yang S, Huang F, Fan W. Sympathectomy Ameliorates CFA-Induced Mechanical Allodynia via Modulating Phenotype of Macrophages in Sensory Ganglion in Mice. J Inflamm Res 2022; 15:6263-6274. [DOI: 10.2147/jir.s388322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/03/2022] [Indexed: 11/12/2022] Open
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19
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Cincotta AH, Cersosimo E, Alatrach M, Ezrokhi M, Agyin C, Adams J, Chilton R, Triplitt C, Chamarthi B, Cominos N, DeFronzo RA. Bromocriptine-QR Therapy Reduces Sympathetic Tone and Ameliorates a Pro-Oxidative/Pro-Inflammatory Phenotype in Peripheral Blood Mononuclear Cells and Plasma of Type 2 Diabetes Subjects. Int J Mol Sci 2022; 23:ijms23168851. [PMID: 36012132 PMCID: PMC9407769 DOI: 10.3390/ijms23168851] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022] Open
Abstract
Bromocriptine-QR is a sympatholytic dopamine D2 agonist for the treatment of type 2 diabetes that has demonstrated rapid (within 1 year) substantial reductions in adverse cardiovascular events in this population by as yet incompletely delineated mechanisms. However, a chronic state of elevated sympathetic nervous system activity and central hypodopaminergic function has been demonstrated to potentiate an immune system pro-oxidative/pro-inflammatory condition and this immune phenotype is known to contribute significantly to the advancement of cardiovascular disease (CVD). Therefore, the possibility exists that bromocriptine-QR therapy may reduce adverse cardiovascular events in type 2 diabetes subjects via attenuation of this underlying chronic pro-oxidative/pro-inflammatory state. The present study was undertaken to assess the impact of bromocriptine-QR on a wide range of immune pro-oxidative/pro-inflammatory biochemical pathways and genes known to be operative in the genesis and progression of CVD. Inflammatory peripheral blood mononuclear cell biology is both a significant contributor to cardiovascular disease and also a marker of the body’s systemic pro-inflammatory status. Therefore, this study investigated the effects of 4-month circadian-timed (within 2 h of waking in the morning) bromocriptine-QR therapy (3.2 mg/day) in type 2 diabetes subjects whose glycemia was not optimally controlled on the glucagon-like peptide 1 receptor agonist on (i) gene expression status (via qPCR) of a wide array of mononuclear cell pro-oxidative/pro-inflammatory genes known to participate in the genesis and progression of CVD (OXR1, NRF2, NQO1, SOD1, SOD2, CAT, GSR, GPX1, GPX4, GCH1, HMOX1, BiP, EIF2α, ATF4, PERK, XBP1, ATF6, CHOP, GSK3β, NFkB, TXNIP, PIN1, BECN1, TLR2, TLR4, TLR10, MAPK8, NLRP3, CCR2, GCR, L-selectin, VCAM1, ICAM1) and (ii) humoral measures of sympathetic tone (norepinephrine and normetanephrine), whole-body oxidative stress (nitrotyrosine, TBARS), and pro-inflammatory factors (IL-1β, IL-6, IL-18, MCP-1, prolactin, C-reactive protein [CRP]). Relative to pre-treatment status, 4 months of bromocriptine-QR therapy resulted in significant reductions of mRNA levels in PBMC endoplasmic reticulum stress-unfolded protein response effectors [GRP78/BiP (34%), EIF2α (32%), ATF4 (29%), XBP1 (25%), PIN1 (14%), BECN1 (23%)], oxidative stress response proteins [OXR1 (31%), NRF2 (32%), NQO1 (39%), SOD1 (52%), CAT (26%), GPX1 (33%), GPX4 (31%), GCH1 (30%), HMOX1 (40%)], mRNA levels of TLR pro-inflammatory pathway proteins [TLR2 (46%), TLR4 (20%), GSK3β (19%), NFkB (33%), TXNIP (18%), NLRP3 (32%), CCR2 (24%), GCR (28%)], mRNA levels of pro-inflammatory cellular receptor proteins CCR2 and GCR by 24% and 28%, and adhesion molecule proteins L-selectin (35%) and VCAM1 (24%). Relative to baseline, bromocriptine-QR therapy also significantly reduced plasma levels of norepinephrine and normetanephrine by 33% and 22%, respectively, plasma pro-oxidative markers nitrotyrosine and TBARS by 13% and 10%, respectively, and pro-inflammatory factors IL-18, MCP1, IL-1β, prolactin, and CRP by 21%,13%, 12%, 42%, and 45%, respectively. These findings suggest a unique role for circadian-timed bromocriptine-QR sympatholytic dopamine agonist therapy in reducing systemic low-grade sterile inflammation to thereby reduce cardiovascular disease risk.
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Affiliation(s)
- Anthony H. Cincotta
- VeroScience LLC, Tiverton, RI 02878, USA
- Correspondence: ; Tel.: +1-401-816-0525
| | - Eugenio Cersosimo
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Mariam Alatrach
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | - Christina Agyin
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - John Adams
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Robert Chilton
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Curtis Triplitt
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | | | - Ralph A. DeFronzo
- Texas Diabetes Institute, University Health System, San Antonio, TX 78207, USA
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
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20
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Chen C, Ren YM, Zhu JZ, Chen JL, Feng ZL, Zhang T, Ye Y, Lin LG. Ainsliadimer C, a disesquiterpenoid isolated from Ainsliaea macrocephala, ameliorates inflammatory responses in adipose tissue via Sirtuin 1-NLRP3 inflammasome axis. Acta Pharmacol Sin 2022; 43:1780-1792. [PMID: 34789920 PMCID: PMC9253034 DOI: 10.1038/s41401-021-00797-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 10/13/2021] [Indexed: 12/27/2022] Open
Abstract
Interleukin-1β (IL-1β), a key pro-inflammatory cytokine, is majorly produced by macrophages through NOD-, LRR-, and pyrin domain-containing protein 3 (NLRP3) inflammasome, which has been identified as the culprit to deteriorate the inflammatory crosstalk between macrophages and adipocytes. Ainsliadimer C (AC) is a disesquiterpenoid isolated from Ainsliaea macrocephala. In the current study, we investigated the effects of AC on adipose tissue inflammation in co-culture of macrophages and adipocytes in vitro as well as in LPS-treated mice in vivo. We showed that AC (20-80 µM) dose-dependently inhibited the secretion of IL-1β from LPS plus ATP-stimulated THP-1 macrophages by inhibiting the activation of NLRP3 inflammasome. Furthermore, we found that AC treatment activated NAD+-dependent deacetylase Sirtuin 1 (SIRT1), resulting in reduced acetylation level of NLRP3. Molecular modeling analysis revealed that binding of AC to sirtuin-activating compound-binding domain increased the affinity of the substrate to the catalytic domain of SIRT1. Moreover, AC (80 µM) significantly attenuated macrophage-conditioned medium-induced inflammatory responses in 3T3-L1 adipocytes. In LPS-induced acute inflammatory mice, administration of AC (20, 60 mg·kg-1·d-1, ip) for 5 days significantly suppressed the pro-inflammatory cytokine levels in serum and epididymal white adipose tissue (eWAT), attenuated macrophage infiltration into eWAT, and mitigated adipose tissue inflammation. The beneficial effects of AC were blocked by co-administration of a selective SIRT1 inhibitor EX-527 (10 mg·kg-1·d-1). Taken together, AC suppresses NLRP3-mediated IL-1β secretion through activating SIRT1, leading to attenuated inflammation in macrophages and adipose tissue, which might be a candidate to treat obesity-associated metabolic diseases.
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Affiliation(s)
- Cheng Chen
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
| | - Yong-mei Ren
- grid.9227.e0000000119573309State Key Laboratory of Drug Research and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203 China
| | - Jian-zhong Zhu
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
| | - Jia-li Chen
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
| | - Zhe-ling Feng
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
| | - Tian Zhang
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
| | - Yang Ye
- State Key Laboratory of Drug Research and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
| | - Li-gen Lin
- grid.437123.00000 0004 1794 8068State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078 China
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21
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Wei Y, Li W, Yang S, Zhong P, Bi Y, Tang Y. Noise exposure and its relationship with postinfarction cardiac remodeling: implications for NLRP3 inflammasome activation. Bioengineered 2022; 13:12127-12140. [PMID: 35575239 PMCID: PMC9275894 DOI: 10.1080/21655979.2022.2073126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
In recent years, high-decibel noise has emerged as a causative risk factor for ischemic heart disease. Massive noise overdose is associated with increased endocrine, neural, and immune stress responses. The NLRP3 (nucleotide-binding oligomerization domain, leucine-rich repeat, and pyrin domain containing 3) inflammasome, the most characterized supramolecular complex and a potent mediator of inflammatory signaling, has been reported to be a marker of increased ischemic heart disease vulnerability. Our study evaluated the association of noise exposure with postinfarction cardiac remodeling and its effect on NLRP3 inflammasome activation. Rats were exposed to a noisy environment (14 days, 24 h/per day, 70 ± 5 dB), and speck formation by the NLRP3 inflammasome scaffold protein ASC (apoptosis-associated speck-like protein) was assessed by confocal immunofluorescence. Echocardiography, pathological analysis, and in vivo electrophysiology were performed. Our results revealed the improved postinfarction cardiac function, mitigated fibrosis, and decreased arrhythmia vulnerability and sympathetic sprouting in low-environment noise groups. Moreover, western blotting of NLRP3, caspase-1, ASC, IL-1β, and IL-18 and confocal microscopy of ASC speck showed that the priming and activation of NLRP3 inflammasome were higher in the NE group than in the NI group. In conclusion, our findings reveal a previously unidentified association between NLRP3 inflammasome activation and noise exposure, underscoring the significance of effective noise prevention in improving postinfarction prognosis.
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Affiliation(s)
- Yanzhao Wei
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, Hubei, China
| | - Wei Li
- Department of Cardiology, Wuhan No. 1 Hospital, Wuhan Hospital of Traditional Chinese and Western Medicine, Wuhan, Hubei, China
| | - Shuang Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, Hubei, China
| | - Peng Zhong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, Hubei, China
| | - Yingying Bi
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, Hubei, China
| | - Yanhong Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, Hubei, China
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22
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Glibenclamide alleviates β adrenergic receptor activation-induced cardiac inflammation. Acta Pharmacol Sin 2022; 43:1243-1250. [PMID: 34349235 PMCID: PMC9061800 DOI: 10.1038/s41401-021-00734-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/29/2021] [Indexed: 11/08/2022] Open
Abstract
β-Adrenergic receptor (β-AR) overactivation is a major pathological factor associated with cardiac diseases and mediates cardiac inflammatory injury. Glibenclamide has shown anti-inflammatory effects in previous research. However, it is unclear whether and how glibenclamide can alleviate cardiac inflammatory injury induced by β-AR overactivation. In the present study, male C57BL/6J mice were treated with or without the β-AR agonist isoprenaline (ISO) with or without glibenclamide pretreatment. The results indicated that glibenclamide alleviated ISO-induced macrophage infiltration in the heart, as determined by Mac-3 staining. Consistent with this finding, glibenclamide also inhibited ISO-induced chemokines and proinflammatory cytokines expression in the heart. Moreover, glibenclamide inhibited ISO-induced cardiac fibrosis and dysfunction in mice. To reveal the protective mechanism of glibenclamide, the NLRP3 inflammasome was further analysed. ISO activated the NLRP3 inflammasome in both cardiomyocytes and mouse hearts, but this effect was alleviated by glibenclamide pretreatment. Furthermore, in cardiomyocytes, ISO increased the efflux of potassium and the generation of ROS, which are recognized as activators of the NLRP3 inflammasome. The ISO-induced increases in these processes were inhibited by glibenclamide pretreatment. Moreover, glibenclamide inhibited the cAMP/PKA signalling pathway, which is downstream of β-AR, by increasing phosphodiesterase activity in mouse hearts and cardiomyocytes. In conclusion, glibenclamide alleviates β-AR overactivation-induced cardiac inflammation by inhibiting the NLRP3 inflammasome. The underlying mechanism involves glibenclamide-mediated suppression of potassium efflux and ROS generation by inhibiting the cAMP/PKA pathway.
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Tang K, Zhong B, Luo Q, Liu Q, Chen X, Cao D, Li X, Yang S. Phillyrin attenuates norepinephrine-induced cardiac hypertrophy and inflammatory response by suppressing p38/ERK1/2 MAPK and AKT/NF-kappaB pathways. Eur J Pharmacol 2022; 927:175022. [DOI: 10.1016/j.ejphar.2022.175022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 12/24/2022]
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24
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Chen L, Wang W, Peng X, Liu L, Zhang A, Li X, Ma K, Wang L. Alpha1-adrenoceptors activate NLRP3 inflammasome through downregulation of Kir2.1 in cardiac inflammation. Exp Physiol 2022; 107:589-600. [PMID: 35363405 DOI: 10.1113/ep090243] [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: 11/25/2021] [Accepted: 03/29/2022] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? The mechanism of cardiac inflammation induced by α 1 -AR stimulation by NLRP3 inflammasome activation is unclear. What is the main finding and its importance? In the mechanism of cardiac inflammation induced by α1 -AR overreaction, Kir2.1 exerts cardioprotective and anti-inflammatory effects by inhibiting the activation of NLRP3 Inflammasome. ABSTRACT Overstimulated sympathetic nerves in cardiovascular diseases can lead to impaired cardiomyocyte function and potential heart failure, which activates not only β-AR but also α1 -AR. A previous report indicated that NLRP3 inflammasome activation is involved in cardiac inflammation induced by the α1 -AR agonist phenylephrine, but the mechanism is still unknown. Here, we aimed to study whether Kir2.1 is involved in cardiac inflammation caused by phenylephrine. The results from in vitro experiments showed that phenylephrine upregulated the expression levels of NLRP3, Caspase-1, IL-18, and IL-1β and downregulated the expression level of Kir2.1 in H9C2 cells. The Kir2.1 agonist zacopride downregulated the expression of NLRP3, Caspase-1, IL-1β and IL-18, and the Kir2.1 inhibitor ML133 upregulated the expression of these genes. To further explore the mechanism, we found that zacopride downregulated the protein expression level of p-p65 and that ML133 upregulated it. Moreover, the NF-κB signaling pathway inhibitor curcumenol reversed the expression of NLRP3 inflammasomes caused by phenylephrine in H9C2 cells. In vivo experiments, the protein expression level of Kir2.1 in the phenylephrine group was significantly decreased, and the activation of Kir2.1 by zacopride reduced cardiac inflammation. In short, Kir2.1 is related to α1 -AR overactivation, which induces cardiac inflammation, through the NF-κB signaling pathway, and activating Kir2.1 can downregulate NLRP3 inflammation and exert cardioprotective effects by zacopride. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ling Chen
- The 3rd Department of Cardiology, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Wenbo Wang
- The 3rd Department of Cardiology, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Xiangyang Peng
- The 3rd Department of Cardiology, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Luqian Liu
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Department of Pathophysiology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Aimei Zhang
- The 3rd Department of Cardiology, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Xinzhi Li
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Department of Pathophysiology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Ketao Ma
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Department of Physiology, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
| | - Li Wang
- The 3rd Department of Cardiology, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.,NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence, Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China
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25
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Wang R, Wang Y, Wu J, Guo Y, Xiao H, Zhang Y, Ma K. Resveratrol Targets AKT1 to Inhibit Inflammasome Activation in Cardiomyocytes Under Acute Sympathetic Stress. Front Pharmacol 2022; 13:818127. [PMID: 35250567 PMCID: PMC8891986 DOI: 10.3389/fphar.2022.818127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/26/2022] [Indexed: 11/25/2022] Open
Abstract
Resveratrol shows promizing anti-inflammatory effects in recent clinical trials, however its function in cardiovascular patients remains conflicting, suggesting there may be new mechanisms underlying its cardioprotective activity. Acute sympathetic stress induces early activation of the NLR family, pyrin domain containing 3 (NLRP3) inflammasome in cardiomyocytes as a critical step for triggering cardiac inflammation. Thus, this study explored targets of resveratrol activity involved in the inhibition of early inflammasome activation in cardiomyocytes following acute sympathetic stress. Network pharmacology was used to analyze common candidate targets in the sympathetic stress pathway, resveratrol activity, and myocardial inflammation and showed the Phosphoinositol 3—kinase (PI3K)/serine threonine protein kinase (Akt) signaling pathway and the target AKT1 may play a critical role. Molecular docking provided support for potential binding of resveratrol on AKT1. Furthermore, the effect of resveratrol on AKT1 activation was determined in cardiomyocytes. resveratrol dose-dependently inhibited AKT1 activation after activation of β-adrenoceptor. The AKT1 inhibitor A-674563 suppressed the activation of the NLRP3 inflammasome in cardiomyocytes following β-adrenoceptor activation, suggesting that AKT1 is a critical regulator molecule upstream of the NLRP3 inflammasome. Consistently, treatment with resveratrol suppressed β-adrenoceptor-mediated NLRP3 inflammasome activation in both cardiomyocytes and mouse hearts, as well as the resultant cardiac inflammation. In conclusion, resveratrol targets AKT1 to inhibit NLRP3 inflammasome activation in cardiomyocytes and cardiac inflammation following acute sympathetic stress. AKT1 is an important target of resveratrol, which should be considered as a treatment option for cardiovascular patients, especially those at risk of acute sympathetic stress.
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Affiliation(s)
- Rui Wang
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, China
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China
| | - Yanming Wang
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, China
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China
| | - Jimin Wu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Yanli Guo
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, China
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China
| | - Han Xiao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Youyi Zhang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
- *Correspondence: Youyi Zhang, ; Ketao Ma,
| | - Ketao Ma
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, China
- Department of Physiology, Shihezi University School of Medicine, Shihezi, China
- *Correspondence: Youyi Zhang, ; Ketao Ma,
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26
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Indoxyl Sulfate Activates NLRP3 Inflammasome to Induce Cardiac Contractile Dysfunction Accompanied by Myocardial Fibrosis and Hypertrophy. Cardiovasc Toxicol 2022; 22:365-377. [PMID: 35088197 DOI: 10.1007/s12012-021-09718-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 12/21/2021] [Indexed: 11/03/2022]
Abstract
In patients with chronic kidney diseases (CKD), high serum indoxyl sulfate (IS) levels correlate with cardiac fibrosis and hypertrophy and thus a critical risk factor for heart failure. The aim of this study was to determine the effects of IS on cardiac function and inflammasome pathway in a rat model of CKD. We assessed the physiological and pathological changes and measured biomarkers of fibrosis and hypertrophy in the hearts of Dahl salt-sensitive (DS), DS hypertensive (DH), and DH IS-treated rats (DH + IS). Low left ventricular (LV) ejection fraction, LV dilatation, and advanced myocardial fibrosis and hypertrophy were observed in DH + IS, which resemble changes found in uremic cardiomyopathy. These changes were independent of renal function and blood pressure. RT-PCR and western blotting analysis showed upregulation of fibrosis and hypertrophy-related biomarkers and adhesion molecules in the hearts of DH + IS rats. IS activated aryl hydrocarbon receptor (AHR) pathway, nuclear factor kappa B p65 (NF-κB p65), and inflammasome in the myocardium of DH + IS rat. Moreover, IS upregulated the expression of critical NLRP3 inflammasome components (NLRP3, ASC, and procaspase-1) and increased production of IL-1β and IL-18. Finally, IS upregulated various inflammatory cytokines, such as MCP-1, TNF-α, IL-6, and TGFβ1, in the myocardium. Our results suggested that IS induced cardiac fibrosis and hypertrophy and impaired LV function through activation of cardiac NLRP3 inflammasome via the AHR/NF-κB pathway.
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27
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Zeng H, Liu J, Chen Z, Yu P, Liu J. Cardiac Autonomic Dysfunction Is Associated With Risk of Diabetic Kidney Disease Progression in Type 2 Diabetes Mellitus. Front Endocrinol (Lausanne) 2022; 13:900465. [PMID: 35846280 PMCID: PMC9283697 DOI: 10.3389/fendo.2022.900465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Evidence on the relationship between heart rate variability (HRV) and albumin-to-creatinine ratio (ACR) combined with estimated glomerular filtration rate (eGFR) in patients with type 2 diabetes mellitus (T2DM) is rare. Thus, this study aimed to investigate the relationship between heart rate variability and the risk of diabetic kidney disease (DKD) progression in diabetes patients. METHOD Overall, 747 T2DM patients who were admitted to the Second Affiliated Hospital of Nanchang University underwent 24-hour dynamic electrocardiograms for HRV analysis. Time-domain HRV measures included mean heart rate, standard deviation of the R-R interval (SDNN), SDNN index, root mean squared difference of successive RR intervals (RMSSD), and percent of adjacent RR intervals with a difference greater than 50 ms (PNN50). Frequency-domain measures included low frequency (LF), very low frequency (VLF), high frequency (HF) components and LF-to-HF ratio. The risk of DKD progression was determined by combining ACR and eGFR and stratified as low risk (Group A), moderately increased risk (Group B), high risk (Group C), and very high risk (Group D) based on the Kidney Disease: Improving Global Outcomes guidelines. RESULT There were significant differences in HRV parameters among the four risk groups (SDNN: 113 ms vs 109 ms vs 101 ms vs 81 ms, P<0.01; LF: 240.2 ms2 vs 241.1 ms2 vs 155.2 ms2 vs 141.9 ms2, P<0.01; LF-to-HF ratio: 1.70 vs 1.24 vs 1.12 vs 0.93, P<0.01; VLF: 723.7 ms2 vs 601.1 ms2 vs 446.4 ms2 vs 356.3 ms2, P<0.01). A very high risk of DKD progression was significantly associated with a lower SDNN (β=-19.5, 95% CI: -30.0 to -10.0, P<0.01), and moderately increased, high, and very high risks were associated with lower LF-to-HF ratio and VLF (P<0.05). Logistic regression analysis showed that group D had a higher risk of reduced SDNN, LF-to-HF ratio, and VLF compared with group A after adjusting for systolic blood pressure, glycated haemoglobin, haemoglobin, high-density lipoprotein cholesterol, and age (odds ratio (95% CI): 0.989 (0. 983-0.996), 0.674 (0.498-0.913), and 0.999 (0.999-1.000), respectively). CONCLUSION Cardiac autonomic dysfunction is associated with a risk of DKD progression in adults with T2DM, and reduced heart rate variability increased such risk. Thus, HRV screening may be necessary in patients with T2DM, especially those with high proteinuria.
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28
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Goldstein DS. Stress and the "extended" autonomic system. Auton Neurosci 2021; 236:102889. [PMID: 34656967 PMCID: PMC10699409 DOI: 10.1016/j.autneu.2021.102889] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/06/2021] [Accepted: 09/28/2021] [Indexed: 12/22/2022]
Abstract
This review updates three key concepts of autonomic neuroscience-stress, the autonomic nervous system (ANS), and homeostasis. Hans Selye popularized stress as a scientific idea. He defined stress variously as a stereotyped response pattern, a state that evokes this pattern, or a stimulus that evokes the state. According to the "homeostat" theory stress is a condition where a comparator senses a discrepancy between sensed afferent input and a response algorithm, the integrated error signal eliciting specific patterns of altered effector outflows. Scientific advances since Langley's definition of the ANS have incited the proposal here of the "extended autonomic system," or EAS, for three reasons. (1) Several neuroendocrine systems are bound inextricably to Langley's ANS. The first to be described, by Cannon in the early 1900s, involves the hormone adrenaline, the main effector chemical of the sympathetic adrenergic system. Other neuroendocrine systems are the hypothalamic-pituitary-adrenocortical system, the arginine vasopressin system, and the renin-angiotensin-aldosterone system. (2) An evolving body of research links the ANS complexly with inflammatory/immune systems, including vagal anti-inflammatory and catecholamine-related inflammasomal components. (3) A hierarchical network of brain centers (the central autonomic network, CAN) regulates ANS outflows. Embedded within the CAN is the central stress system conceptualized by Chrousos and Gold. According to the allostasis concept, homeostatic input-output curves can be altered in an anticipatory, feed-forward manner; and prolonged or inappropriate allostatic adjustments increase wear-and-tear (allostatic load), resulting in chronic, stress-related, multi-system disorders. This review concludes with sections on clinical and therapeutic implications of the updated concepts offered here.
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Affiliation(s)
- David S Goldstein
- Autonomic Medicine Section, Clinical Neurosciences Program, Division of Intramural Research, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA; Autonomic Medicine Section, CNP/DIR/NINDS/NIH, 9000 Rockville Pike MSC-1620, Building 10 Room 8N260, Bethesda, MD 20892-1620, USA..
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29
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Wu J, Dong E, Zhang Y, Xiao H. The Role of the Inflammasome in Heart Failure. Front Physiol 2021; 12:709703. [PMID: 34776995 PMCID: PMC8581560 DOI: 10.3389/fphys.2021.709703] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 10/06/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammation promotes the development of heart failure (HF). The inflammasome is a multimeric protein complex that plays an essential role in the innate immune response by triggering the cleavage and activation of the proinflammatory cytokines interleukins (IL)-1β and IL-18. Blocking IL-1β with the monoclonal antibody canakinumab reduced hospitalizations and mortality in HF patients, suggesting that the inflammasome is involved in HF pathogenesis. The inflammasome is activated under various pathologic conditions that contribute to the progression of HF, including pressure overload, acute or chronic overactivation of the sympathetic system, myocardial infarction, and diabetic cardiomyopathy. Inflammasome activation is responsible for cardiac hypertrophy, fibrosis, and pyroptosis. Besides inflammatory cells, the inflammasome in other cardiac cells initiates local inflammation through intercellular communication. Some inflammasome inhibitors are currently being investigated in clinical trials in patients with HF. The current evidence suggests that the inflammasome is a critical mediator of cardiac inflammation during HF and a promising therapeutic target. The present review summarizes the recent advances in both basic and clinical research on the role of the inflammasome in HF.
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Affiliation(s)
- Jimin Wu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China.,NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Erdan Dong
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China.,NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Youyi Zhang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China.,NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
| | - Han Xiao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, Beijing, China.,NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China.,Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, China
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30
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Guo L, Qin G, Cao Y, Yang Y, Dai S, Wang L, Wang E. Regulation of the Immune Microenvironment by an NLRP3 Inhibitor Contributes to Attenuation of Acute Right Ventricular Failure in Rats with Pulmonary Arterial Hypertension. J Inflamm Res 2021; 14:5699-5711. [PMID: 34754216 PMCID: PMC8572093 DOI: 10.2147/jir.s336964] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/21/2021] [Indexed: 12/04/2022] Open
Abstract
Background Right heart failure is the terminal stage of PAH. When PAH patients suffer from pulmonary infection or puerperal infection heart failure often rapidly develops. Low dose of lipopolysaccharide induces rapid right ventricular failure in rats with pulmonary arterial hypertension. Purpose The objective of this study was to investigate whether the NLRP3 inflammasome mediates disturbance of the ventricular immune microenvironment of PAH rats and promotes right ventricular failure. Methods Intraperitoneal injection of monocrotaline was used to induce PAH in rats. Right ventricular function was measured via echocardiography before and after the rats were treated with lipopolysaccharide and MCC950. The degree of immune microenvironment disturbance in right ventricular tissue was measured with a rat chemokine and cytokine antibody array, Western blot, flow cytometry and quantitative real-time PCR analysis. Results After the rats were injected with LPS, they exhibited right ventricular dysfunction and a significant increase in right ventricular tissue inflammation with elevated M1 macrophage proportion. Administration of MCC950 suppressed inflammation and improved right ventricular function. The number of M1 macrophages was decreased after MCC950 treatment. NLRP3 inflammasome inhibition ameliorated LPS-induced changes in the immune microenvironment in the right heart and right ventricular dysfunction in rats with PAH. Conclusion Selective inhibition of NLRP3 pathway interfered the interaction between hypertrophic cardiomyocytes and macrophages in the initial stage of inflammation and maintained the immune microenvironment balance, eventually contributing to attenuation of LPS-induced acute heart failure in PAH rats.
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Affiliation(s)
- Lizhe Guo
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Gang Qin
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Yanan Cao
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Yue Yang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Sisi Dai
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - Lu Wang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China
| | - E Wang
- Department of Anesthesiology, Xiangya Hospital Central South University, Changsha, People's Republic of China.,National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, People's Republic of China
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31
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Du Y, Demillard LJ, Ren J. Catecholamine-induced cardiotoxicity: A critical element in the pathophysiology of stroke-induced heart injury. Life Sci 2021; 287:120106. [PMID: 34756930 DOI: 10.1016/j.lfs.2021.120106] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 01/20/2023]
Abstract
Cerebrovascular diseases such as ischemic stroke, brain hemorrhage, and subarachnoid hemorrhage provoke cardiac complications such as heart failure, neurogenic stress-related cardiomyopathy and Takotsubo cardiomyopathy. With regards to the pathophysiology of stroke-induced heart injury, several mechanisms have been postulated to contribute to this complex interaction between brain and heart, including damage from gut dysbiosis, immune and systematic inflammatory responses, microvesicle- and microRNA-mediated vascular injury and damage from a surge of catecholamines. All these cerebrovascular diseases may trigger pronounced catecholamine surges through diverse ways, including stimulation of hypothalamic-pituitary adrenal axis, dysregulation of autonomic system, and secretion of adrenocorticotropic hormone. Primary catecholamines involved in this pathophysiological response include norepinephrine (NE) and epinephrine. Both are important neurotransmitters that connect the nervous system with the heart, leading to cardiac damage via myocardial ischemia, calcium (Ca2+) overload, oxidative stress, and mitochondrial dysfunction. In this review, we will aim to summarize the molecular mechanisms behind catecholamine-induced cardiotoxicity including Ca2+ overload, oxidative stress, apoptosis, cardiac hypertrophy, interstitial fibrosis, and inflammation. In addition, we will focus on how synchronization among these pathways evokes cardiotoxicity.
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Affiliation(s)
- Yuxin Du
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Laurie J Demillard
- School of Pharmacy, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 200032, China; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98195, USA.
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32
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Zhang C, Zhao M, Wang B, Su Z, Guo B, Qin L, Zhang W, Zheng R. The Nrf2-NLRP3-caspase-1 axis mediates the neuroprotective effects of Celastrol in Parkinson's disease. Redox Biol 2021; 47:102134. [PMID: 34600334 PMCID: PMC8487081 DOI: 10.1016/j.redox.2021.102134] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 12/14/2022] Open
Abstract
Parkinson's disease (PD) is a chronic neurodegenerative disorder that is characterized by motor symptoms as a result of a loss of dopaminergic neurons in the substantia nigra pars compacta (SNc), accompanied by chronic neuroinflammation, oxidative stress, formation of α-synuclein aggregates. Celastrol, a potent anti-inflammatory and anti-oxidative pentacyclic triterpene, has emerged as a neuroprotective agent. However, the mechanisms by which celastrol is neuroprotective in PD remain elusive. Here we show that celastrol protects against dopamine neuron loss, mitigates neuroinflammation, and relieves motor deficits in MPTP-induced PD mouse model and AAV-mediated human α-synuclein overexpression PD model. Whole-genome deep sequencing analysis revealed that Nrf2, NLRP3 and caspase-1 in SNc may be associated with the neuroprotective actions of celastrol in PD. By using multiple genetically modified mice (Nrf2-KO, NLRP3-KO and Caspase-1-KO), we identified that celastrol inhibits NLRP3 inflammasome activation, relieves motor deficits and nigrostriatal dopaminergic degeneration through Nrf2-NLRP3-caspase-1 pathway. Taken together, these findings suggest that Nrf2-NLRP3-caspase-1 axis may serve as a key target of celastrol in PD treatment, and highlight the favorable properties of celastrol for neuroprotection, making celastrol as a promising disease-modifying agent for PD.
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Affiliation(s)
- Chenyu Zhang
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Miao Zhao
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Bingwei Wang
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Zhijie Su
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Bingbing Guo
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Lihua Qin
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Weiguang Zhang
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China
| | - Ruimao Zheng
- Department of Anatomy, Histology and Embryology, Health Science Center, Peking University, Beijing, China; Neuroscience Research Institute, Peking University, Beijing, China; Key Laboratory for Neuroscience of Ministry of Education, Peking University, Beijing, China; Key Laboratory for Neuroscience of National Health Commission, Peking University, Beijing, China.
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33
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Liang Y, Wu X, Xu M, Ding L, Li H, Wu Y. Urotensin II induces activation of NLRP3 and pyroptosis through calcineurin in cardiomyocytes. Peptides 2021; 144:170609. [PMID: 34242679 DOI: 10.1016/j.peptides.2021.170609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/24/2021] [Accepted: 06/28/2021] [Indexed: 01/27/2023]
Abstract
Cell pyroptosis, a new type of programmed cell death, has been recently reported to play important roles in the development of cardiac remodeling. How cardiomyocyte pyroptosis is induced remains to be elucidated. Urotensin II (UII) has been known closely related to cardiac remodeling and the development of heart failure. Inhibition of UII receptors has been shown to be effective in the treatment of cardiac hypertrophy and remodeling. However, it is not clear whether UII might induce cardiomyocyte pyroptosis. We here examined the effect of UII treatment on pyroptosis in cultured cardiomyocytes. Treatment of cardiomyocyes of neonatal rats with UII (500 nmol/l) for 48 hours induced a significant pyroptosis as evidenced by not only increased cell death but also upregulated expression levels of NLR family pyrin domain containing 3 (NLRP3), caspase-1, IL-1β, IL-18 and gasdermin D (GMDSD)-N which are important markers for the identification of cell pyroptosis. All these pyroptosis responses induced by UII were abrogated by an inhibitor of NLRP3. Moreover, the antagonist of UII receptor, Urantide abolished UII- induced cardiomyocyte pyroptosis. Additionally, inhibition of calcineurin by cyclosporin A rather than that of CaMKII by KN93 suppressed the UII-upregulated expression levels of those pyroptosis markers. We therefore demonstrate that UII might induce cardiomyocyte pyroptosis through calcineurin.
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Affiliation(s)
- Yanyan Liang
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Xiaoyu Wu
- Department of International Medical Care Center, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Mengdan Xu
- Department of International Medical Care Center, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Lin Ding
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Hongli Li
- Department of Cardiology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China.
| | - Ying Wu
- Department of International Medical Care Center, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China.
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34
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Wang J, Zhang J, Lin X, Wang Y, Wu X, Yang F, Gao W, Zhang Y, Sun J, Jiang C, Xu M. DCA-TGR5 signaling activation alleviates inflammatory response and improves cardiac function in myocardial infarction. J Mol Cell Cardiol 2021; 151:3-14. [PMID: 33130149 DOI: 10.1016/j.yjmcc.2020.10.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/29/2020] [Accepted: 10/26/2020] [Indexed: 12/27/2022]
Abstract
AIMS The progression of myocardial infarction (MI) involves multiple metabolic disorders. Bile acid metabolites have been increasingly recognized as pleiotropic signaling molecules that regulate multiple cardiovascular functions. G protein-coupled bile acid receptor (TGR5) is one of the receptors sensing bile acids to mediate their biological functions. In this study, we aimed to elucidate the effects of bile acids-TGR5 signaling pathways in myocardial infarction (MI). METHODS AND RESULTS Blood samples of AMI patients or control subjects were collected and plasma was used for bile acid metabolism analysis. We discovered that bile acid levels were altered and deoxycholic acid (DCA) was substantially reduced in the plasma of AMI patients. Mice underwent either the LAD ligation model of MI or sham operation. Both MI and sham mice were gavaged with 10 mg/kg/d DCA or vehicle control since 3-day before the operation. Cardiac function was assessed by ultrasound echocardiography, infarct area was evaluated by TTC staining and Masson trichrome staining. Administration of DCA improved cardiac function and reduced ischemic injury at the 7th-day post-MI. The effects of DCA were dependent on binding to its receptor TGR5. Tgr5-/- mice underwent the same MI model. Cardiac function deteriorated and infarct size was increased at the 7th-day post-MI, which were not savaged by DCA administration. Moreover, DCA inhibited interleukin (IL)-1β expression in the infarcted hearts, and ameliorated IL-1β activation at 1-day post-MI. DCA inhibited NF-κB signaling and further IL-1β expression in cultured neonatal mouse cardiomyocytes under hypoxia as well as cardio-fibroblasts with the treatment of LPS. CONCLUSIONS DCA-TGR5 signaling pathway activation decreases inflammation and ameliorates heart function post-infarction. Strategies that control bile acid metabolism and TGR5 signaling to ameliorate the inflammatory responses may provide beneficial effects in patients with myocardial infarction.
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Affiliation(s)
- Jiaxing Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Jianshu Zhang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Xianjuan Lin
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Yupeng Wang
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Xiang Wu
- Key Laboratory Experimental Teratology of the Ministry of Education and Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Fan Yang
- Key Laboratory Experimental Teratology of the Ministry of Education and Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, Shandong 250012, China
| | - Wei Gao
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Yan Zhang
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, School of Basic Medical Sciences, Ministry of Education, Peking University Health Science Center, Beijing 100191, China
| | - Jinpeng Sun
- Key Laboratory Experimental Teratology of the Ministry of Education and Department of Biochemistry and Molecular Biology, Shandong University, School of Medicine, Jinan, Shandong 250012, China; Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Changtao Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China; Center of Basic Medical Research, Institute of Medical Innovation and Research, Third Hospital, Peking University, Beijing 100191, China.
| | - Ming Xu
- Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China; State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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35
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Yan Z, Qi Z, Yang X, Ji N, Wang Y, Shi Q, Li M, Zhang J, Zhu Y. The NLRP3 inflammasome: Multiple activation pathways and its role in primary cells during ventricular remodeling. J Cell Physiol 2021; 236:5547-5563. [PMID: 33469931 DOI: 10.1002/jcp.30285] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 12/18/2022]
Abstract
Inflammasomes are a group of multiprotein signaling complexes located in the cytoplasm. Several inflammasomes have been identified, including NLRP1, NLRP2, NLRP3, AIM2, and NLRC4. Among them, NLRP3 was investigated in most detail, and it was reported that it can be activated by many different stimuli. Increased NLRP3 protein expression and inflammasome assembly lead to caspase-1 mediated maturation and release of IL-1β, which triggers inflammation and pyroptosis. The activation of the NLRP3 inflammasome has been widely reported in studies of tumors and neurological diseases, but relatively few studies on the cardiovascular system. Ventricular remodeling (VR) is an important factor contributing to heart failure (HF) after myocardial infarction (MI). Consequently, delaying VR is of great significance for improving heart function. Studies have shown that the NLRP3 inflammasome plays an essential role in the process of VR. Here, we reviewed the latest studies on the activation pathway of the NLRP3 inflammasome, focusing on the effects of the NLRP3 inflammasome in primary cells during VR, and finally discuss future research directions in this field.
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Affiliation(s)
- Zhipeng Yan
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Zhongwen Qi
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoya Yang
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Nan Ji
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yueyao Wang
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qi Shi
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Meng Li
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Junping Zhang
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yaping Zhu
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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36
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Abstract
The pandemic viral illness COVID-19 is especially life-threatening in the elderly and in those with any of a variety of chronic medical conditions. This essay explores the possibility that the heightened risk may involve activation of the "extended autonomic system" (EAS). Traditionally, the autonomic nervous system has been viewed as consisting of the sympathetic nervous system, the parasympathetic nervous system, and the enteric nervous system. Over the past century, however, neuroendocrine and neuroimmune systems have come to the fore, justifying expansion of the meaning of "autonomic." Additional facets include the sympathetic adrenergic system, for which adrenaline is the key effector; the hypothalamic-pituitary-adrenocortical axis; arginine vasopressin (synonymous with anti-diuretic hormone); the renin-angiotensin-aldosterone system, with angiotensin II and aldosterone the main effectors; and cholinergic anti-inflammatory and sympathetic inflammasomal pathways. A hierarchical brain network-the "central autonomic network"-regulates these systems; embedded within it are components of the Chrousos/Gold "stress system." Acute, coordinated alterations in homeostatic settings (allostasis) can be crucial for surviving stressors such as traumatic hemorrhage, asphyxiation, and sepsis, which throughout human evolution have threatened homeostasis; however, intense or long-term EAS activation may cause harm. While required for appropriate responses in emergencies, EAS activation in the setting of chronically decreased homeostatic efficiencies (dyshomeostasis) may reduce thresholds for induction of destabilizing, lethal vicious cycles. Testable hypotheses derived from these concepts are that biomarkers of EAS activation correlate with clinical and pathophysiologic data and predict outcome in COVID-19 and that treatments targeting specific abnormalities identified in individual patients may be beneficial.
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Affiliation(s)
- David S Goldstein
- Autonomic Medicine Section, Clinical Neurosciences Program, Division of Intramural Research, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 9000 Rockville Pike MSC-1620, Building 10 Room 8N260, Bethesda, MD, 20892-1620, USA.
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37
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Byrne NJ, Soni S, Takahara S, Ferdaoussi M, Al Batran R, Darwesh AM, Levasseur JL, Beker D, Vos DY, Schmidt MA, Alam AS, Maayah ZH, Schertzer JD, Seubert JM, Ussher JR, Dyck JRB. Chronically Elevating Circulating Ketones Can Reduce Cardiac Inflammation and Blunt the Development of Heart Failure. Circ Heart Fail 2020; 13:e006573. [PMID: 32493060 DOI: 10.1161/circheartfailure.119.006573] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Previous studies have shown beneficial effects of acute infusion of the primary ketone body, β-hydroxybutyrate, in heart failure (HF). However, whether chronic elevations in circulating ketones are beneficial remains unknown. METHODS To chronically elevate circulating ketones in mice, we deleted the expression of the ketolytic, rate-limiting-enzyme, SCOT (succinyl-CoA:3-ketoacid-CoA transferase 1; encoded by Oxct1), in skeletal muscle. Tamoxifen-inducible skeletal muscle-specific Oxct1Muscle-/- knockout (n=32) mice and littermate controls (wild type; WT; n=35) were subjected to transverse aortic constriction (TAC) surgery to induce HF. RESULTS Deletion of SCOT in skeletal, but not cardiac muscle resulted in elevated concentrations of fasted circulating β-hydroxybutyrate in knockout mice compared with WT mice (P=0.030). Five weeks following TAC, WT mice progressed to HF, whereas knockout mice with elevated fasting circulating ketones were largely protected from the TAC-induced effects observed in WT mice (ejection fraction, P=0.011; mitral E/A, P=0.012). Furthermore, knockout mice with TAC had attenuated expression of markers of sterile inflammation and macrophage infiltration, which were otherwise elevated in WT mice subjected to TAC. Lastly, addition of β-hydroxybutyrate to isolated hearts was associated with reduced NLRP3 (nucleotide-binding domain-like receptor protein 3)-inflammasome activation, which has been previously shown to play a role in contributing to HF-induced cardiac inflammation. CONCLUSIONS These data show that chronic elevation of circulating ketones protects against the development of HF that is associated with the ability of β-hydroxybutyrate to directly reduce inflammation. These beneficial effects of ketones were associated with reduced cardiac NLRP3 inflammasome activation, suggesting that ketones may modulate cardiac inflammation via this mechanism.
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Affiliation(s)
- Nikole J Byrne
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Department of Pediatrics (N.J.B., S.S., Z.H.M., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Shubham Soni
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Department of Pediatrics (N.J.B., S.S., Z.H.M., J.R.B.D.), University of Alberta, Edmonton, Canada.,Alberta Diabetes Institute (S.S., R.A.B., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Shingo Takahara
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan (S.T.)
| | - Mourad Ferdaoussi
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Rami Al Batran
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Alberta Diabetes Institute (S.S., R.A.B., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Faculty of Medicine and Dentistry, and Faculty of Pharmacy and Pharmaceutical Sciences (R.A.B., A.M.D., J.M.S., J.R.U.), University of Alberta, Edmonton, Canada
| | - Ahmed M Darwesh
- Faculty of Medicine and Dentistry, and Faculty of Pharmacy and Pharmaceutical Sciences (R.A.B., A.M.D., J.M.S., J.R.U.), University of Alberta, Edmonton, Canada
| | - Jody L Levasseur
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Donna Beker
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Dyonne Y Vos
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Mya A Schmidt
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Abrar S Alam
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Zaid H Maayah
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Department of Pediatrics (N.J.B., S.S., Z.H.M., J.R.B.D.), University of Alberta, Edmonton, Canada
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada (J.D.S.)
| | - John M Seubert
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Department of Pharmacology (J.M.S), University of Alberta, Edmonton, Canada.,Faculty of Medicine and Dentistry, and Faculty of Pharmacy and Pharmaceutical Sciences (R.A.B., A.M.D., J.M.S., J.R.U.), University of Alberta, Edmonton, Canada
| | - John R Ussher
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Alberta Diabetes Institute (S.S., R.A.B., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Faculty of Medicine and Dentistry, and Faculty of Pharmacy and Pharmaceutical Sciences (R.A.B., A.M.D., J.M.S., J.R.U.), University of Alberta, Edmonton, Canada
| | - Jason R B Dyck
- Cardiovascular Research Centre (N.J.B., S.S., S.T., M.F., R.A.B., J.L.L., D.B., D.Y.V., M.A.S., A.S.A., Z.H.M., J.M.S., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada.,Department of Pediatrics (N.J.B., S.S., Z.H.M., J.R.B.D.), University of Alberta, Edmonton, Canada.,Alberta Diabetes Institute (S.S., R.A.B., J.R.U., J.R.B.D.), University of Alberta, Edmonton, Canada
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