1
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Li B, Bai WW, Guo T, Tang ZY, Jing XJ, Shan TC, Yin S, Li Y, Wang F, Zhu ML, Lu JX, Bai YP, Dong B, Li P, Wang SX. Statins improve cardiac endothelial function to prevent heart failure with preserved ejection fraction through upregulating circRNA-RBCK1. Nat Commun 2024; 15:2953. [PMID: 38580662 PMCID: PMC10997751 DOI: 10.1038/s41467-024-47327-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 03/27/2024] [Indexed: 04/07/2024] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is associated with endothelial dysfunction. We have previously reported that statins prevent endothelial dysfunction through inhibition of microRNA-133a (miR-133a). This study is to investigate the effects and the underlying mechanisms of statins on HFpEF. Here, we show that statins upregulate the expression of a circular RNA (circRNA-RBCK1) which is co-transcripted with the ring-B-box-coiled-coil protein interacting with protein kinase C-1 (RBCK1) gene. Simultaneously, statins increase activator protein 2 alpha (AP-2α) transcriptional activity and the interaction between circRNA-RBCK1 and miR-133a. Furthermore, AP-2α directly interacts with RBCK1 gene promoter in endothelial cells. In vivo, lovastatin improves diastolic function in male mice under HFpEF, which is abolished by loss function of endothelial AP-2α or circRNA-RBCK1. This study suggests that statins upregulate the AP-2α/circRNA-RBCK1 signaling to suppress miR-133a in cardiac endothelial cells and prevent diastolic dysfunction in HFpEF.
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Affiliation(s)
- Bin Li
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Wen-Wu Bai
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Tao Guo
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Zhen-Yu Tang
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xue-Jiao Jing
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ti-Chao Shan
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Sen Yin
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ying Li
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Fu Wang
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Mo-Li Zhu
- College of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang Medical University, Xinxiang, Henan, China
| | - Jun-Xiu Lu
- College of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yong-Ping Bai
- College of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang Medical University, Xinxiang, Henan, China
- Department of Geriatric Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Bo Dong
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Peng Li
- College of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang Medical University, Xinxiang, Henan, China.
| | - Shuang-Xi Wang
- State Key Laboratory for Innovation and Transformation of Luobing Theory, the Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
- College of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Key Laboratory of Vascular Remodeling Intervention and Molecular Targeted Therapy Drug Development, Xinxiang Medical University, Xinxiang, Henan, China.
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2
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Clark GC, Lai A, Agarwal A, Liu Z, Wang XY. Biopterin metabolism and nitric oxide recoupling in cancer. Front Oncol 2024; 13:1321326. [PMID: 38469569 PMCID: PMC10925643 DOI: 10.3389/fonc.2023.1321326] [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: 10/13/2023] [Accepted: 12/26/2023] [Indexed: 03/13/2024] Open
Abstract
Tetrahydrobiopterin is a cofactor necessary for the activity of several enzymes, the most studied of which is nitric oxide synthase. The role of this cofactor-enzyme relationship in vascular biology is well established. Recently, tetrahydrobiopterin metabolism has received increasing attention in the field of cancer immunology and immunotherapy due to its involvement in the cytotoxic T cell response. Past research has demonstrated that when the availability of BH4 is low, as it is in chronic inflammatory conditions and tumors, electron transfer in the active site of nitric oxide synthase becomes uncoupled from the oxidation of arginine. This results in the production of radical species that are capable of a direct attack on tetrahydrobiopterin, further depleting its local availability. This feedforward loop may act like a molecular switch, reinforcing low tetrahydrobiopterin levels leading to altered NO signaling, restrained immune effector activity, and perpetual vascular inflammation within the tumor microenvironment. In this review, we discuss the evidence for this underappreciated mechanism in different aspects of tumor progression and therapeutic responses. Furthermore, we discuss the preclinical evidence supporting a clinical role for tetrahydrobiopterin supplementation to enhance immunotherapy and radiotherapy for solid tumors and the potential safety concerns.
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Affiliation(s)
- Gene Chatman Clark
- Department of Biochemistry, Virginia Commonwealth University, Richmond, VA, United States
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Alan Lai
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | | | - Zheng Liu
- Department of Human Molecular Genetics, Virginia Commonwealth University, Richmond, VA, United States
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, United States
| | - Xiang-Yang Wang
- Department of Human Molecular Genetics, Virginia Commonwealth University, Richmond, VA, United States
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, United States
- Institute of Molecular Medicine, Virginia Commonwealth University, Richmond, VA, United States
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3
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Qiu Y, Zhang X, Li SS, Li YL, Mao BY, Fan JX, Shuang-Guo, Yin YL, Li P. Citronellal can alleviate vascular endothelial dysfunction by reducing ectopic miR-133a expression. Life Sci 2024; 339:122382. [PMID: 38154610 DOI: 10.1016/j.lfs.2023.122382] [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: 11/12/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 12/30/2023]
Abstract
AIMS Endothelial dysfunction (ED) is the initial cause of atherosclerosis (AS) and an early marker of many cardiovascular diseases (CVD). Citronellal (CT), a monoterpenoid natural product extracted from grass plant Citronella, has been shown to have anti-thrombotic, anti-hypertensive and anti-diabetic cardiomyopathy activities. The aim of this study is to investigate the effects of citronellal on vascular endothelial dysfunction and the underlying mechanisms. MATERIALS AND METHODS The left common carotid artery was subjected to one-time balloon injury to cause vascular endothelial injury, and the AS model was established by feeding with high-fat diet. Use of HUVECs H2O2 treatment induced HUVECs oxidative stress damage model. The blood lipid level, histopathology, Western blot, immunohistochemistry, RT-PCR, ELISA and in situ fluorescence hybridization of common carotid artery tissues and HUVECs were studied. KEY FINDINGS CT significantly reduced vascular plate area and endothelial lipid and cholesterol deposition in the common carotid artery of mice in a dose-dependent manner. CT increased the expression of activated protein 2α (AP-2α/TFAP2A) and circRNA_102979, and inhibited the ectopic expression level of miR-133a. However, the constructed lentivirus with AP-2α silencing and circRNA_102979 silencing reversed this phenomenon. SIGNIFICANCE The current study verifies CT can increase the expression levels of AP-2α and circRNA_102979 in vascular endothelium, increase the adsorption effect of circRNA_102979 on miR-133a and relieve the inhibitory effect of miR-133a on target genes, thereby alleviating AS-induced ED.
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Affiliation(s)
- Yue Qiu
- Department of Pharmacy, Beijing Renhe Hospital, Beijing 102600, China; Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Xue Zhang
- Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Shan-Shan Li
- Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Yin-Lan Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Heilongjiang 150040, China
| | - Bing-Yan Mao
- Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Jia-Xin Fan
- Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Shuang-Guo
- Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Ya-Ling Yin
- Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China.
| | - Peng Li
- Department of Pharmacy, Beijing Renhe Hospital, Beijing 102600, China; Sino-UK Joint Laboratory of Brain Function and Injury and Department of Physiology and Neurobiology, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Basic Medical Sciences, College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China; Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China.
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4
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Masenga SK, Kabwe LS, Chakulya M, Kirabo A. Mechanisms of Oxidative Stress in Metabolic Syndrome. Int J Mol Sci 2023; 24:7898. [PMID: 37175603 PMCID: PMC10178199 DOI: 10.3390/ijms24097898] [Citation(s) in RCA: 69] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Metabolic syndrome is a cluster of conditions associated with the risk of diabetes mellitus type 2 and cardiovascular diseases (CVDs). Metabolic syndrome is closely related to obesity. Increased adiposity promotes inflammation and oxidative stress, which are precursors of various complications involving metabolic syndrome components, namely insulin resistance, hypertension, and hyperlipidemia. An increasing number of studies confirm the importance of oxidative stress and chronic inflammation in the etiology of metabolic syndrome. However, few studies have reviewed the mechanisms underlying the role of oxidative stress in contributing to metabolic syndrome. In this review, we highlight mechanisms by which reactive oxygen species (ROS) increase mitochondrial dysfunction, protein damage, lipid peroxidation, and impair antioxidant function in metabolic syndrome. Biomarkers of oxidative stress can be used in disease diagnosis and evaluation of severity.
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Affiliation(s)
- Sepiso K. Masenga
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone P.O. Box 60009, Zambia
- Department of Medicine, Room 536 Robinson Research Building, Vanderbilt University Medical Centre, Nashville, TN 37232-6602, USA
| | - Lombe S. Kabwe
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone P.O. Box 60009, Zambia
| | - Martin Chakulya
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone P.O. Box 60009, Zambia
| | - Annet Kirabo
- Department of Medicine, Room 536 Robinson Research Building, Vanderbilt University Medical Centre, Nashville, TN 37232-6602, USA
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5
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Liu J, Du X, Yao Q, Jiang T, Cui Q, Xie X, Zhao Z, Lai B, Wang N, Xiao L. Procyanidin B2 ameliorates endothelial dysfunction induced by nicotine via the induction of tetrahydrobiopterin synthesis. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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6
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Yin YL, Chen Y, Ren F, Wang L, Zhu ML, Lu JX, Wang QQ, Lu CB, Liu C, Bai YY, Wang SX, Wang JZ, Li P. Nitrosative stress induced by homocysteine thiolactone drives vascular cognitive impairments via GTP cyclohydrolase 1 S-nitrosylation in vivo. Redox Biol 2022; 58:102540. [DOI: 10.1016/j.redox.2022.102540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/02/2022] [Accepted: 11/11/2022] [Indexed: 11/15/2022] Open
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7
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Wang H, Li J, Wang Z, Tian Y, Li C, Jin F, Li J, Wang L. Perivascular brown adipocytes-derived kynurenic acid relaxes blood vessel via endothelium PI3K-Akt-eNOS pathway. Biomed Pharmacother 2022; 150:113040. [PMID: 35658210 DOI: 10.1016/j.biopha.2022.113040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/15/2022] [Accepted: 04/25/2022] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE Several metabolites from the kynurenine pathway of tryptophan metabolism play a critical role in vascular function and vascular wall remodeling. This study aimed to test whether metabolite kynurenic acid (KYNA) from the kynurenine pathway relaxes blood vessels. APPROACH AND RESULTS We employed histological staining, in vitro cell culture, Western blotting, real-time PCR, and nitric oxide detection to validate kynurenine aminotransferase (KAT) localization in the vasculature as well as KYNA action on endothelial cells. We also detected vascular reactivity by organ chamber and monitored blood pressure by telemetry to investigate the regulation effect of KYNA on vascular tone. The results presented that perivascular adipose tissue (PVAT) from mice thoracic aorta had robust staining of anti-KAT1 and KYNA than PVAT from the abdominal aorta and mesenteric artery, which is consistent with the expression profile of brown adipocyte marker uncoupling protein 1. KYNA, metabolized from kynurenine by KAT, relaxed pre-contracted both aortic ring and mesenteric artery. In addition, KYNA derived from KAT in PVAT participates in the cross-talk between PVAT and vessel by mediating PVAT inhibition on agonist-induced thoracic aorta contraction. Furthermore, intraperitoneal injection of KYNA in mice reduced blood pressure. The vessel relaxation effect of KYNA was through the endothelium-dependent PI3K-Akt-eNOS pathway. Finally, the high-fat diet decreased KAT1 expression in perithoracic aortic fat and led to KYNA reduction in blood. CONCLUSIONS Our research identified KYNA generated by KAT as a novel perivascular brown adipocyte-derived vascular relaxation factor and suggests that KYNA reduction is a critical event in vascular dysfunction under obese condition.
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Affiliation(s)
- Huan Wang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China; Center for Molecular and Translational Medicine, Georgia State University, 157 Decatur Street SE, Atlanta, GA 30303, USA
| | - Jian Li
- Center for Molecular and Translational Medicine, Georgia State University, 157 Decatur Street SE, Atlanta, GA 30303, USA
| | - Zheng Wang
- Department of Cardiology, The First Affiliated Hospital of Hainan Medical University, Hainan 570102, PR China
| | - Yanfeng Tian
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Chunlei Li
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Feng Jin
- Foreign Language Teaching Department, Gui Zhou University of Traditional Chinese Medicine, Gui Zhou 550025, PR China
| | - Jia Li
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China.
| | - Lanfeng Wang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
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8
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Xue B, Wang Y. Naringenin upregulates GTPCH1/eNOS to ameliorate high glucose‑induced retinal endothelial cell injury. Exp Ther Med 2022; 23:428. [PMID: 35607381 PMCID: PMC9121200 DOI: 10.3892/etm.2022.11355] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/18/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Bing Xue
- Health Management Center of Dalian Second People's Hospital, Dalian, Liaoning 116011, P.R. China
| | - Yu Wang
- Medical Department of Dalian Second People's Hospital, Dalian, Liaoning 116011, P.R. China
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9
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Xu X, Zhao X, Chen L, Liu M, Hu Z, Ke J, Fu B, Zhou Y, Wei H. CD158a + /CD158b + NK cell imbalance correlates with hypertension in patients with pre-eclampsia. Am J Reprod Immunol 2022; 87:e13532. [PMID: 35253311 DOI: 10.1111/aji.13532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/13/2022] [Accepted: 03/02/2022] [Indexed: 12/14/2022] Open
Abstract
PROBLEM Preeclampsia, a pregnancy complication with hypertension and proteinuria, seriously threats the health and lives of the mother and the baby. The pathogenesis of pre-eclampsia remains incompletely understood. The role of peripheral natural killer cells (NK cells) in the pre-eclampsia is unclear. METHOD OF STUDY Flow cytometry was performed to detect the expression of CD158a (KIR2DL1) and CD158b (KIR2DL2/3) in peripheral NK cells of healthy pregnant women (HP) and patients with pre-eclampsia (PE). Differentially expressed genes (DEGs) in CD158a+ and CD158b+ NK cells were identified by RNA-sequencing and real-time PCR. Protein array analysis was used to identify altered protein levels in the serum of study participants. RESULTS CD158a+ NK cell numbers were increased in the peripheral blood of patients while the number of CD158b+ NK cells was reduced. In addition, the percentage of CD158a+ NK cells within the peripheral NK subset was positively correlated with systolic blood pressure while the percentage of CD158b+ NK cells was negatively correlated with systolic blood pressure. RNA-seq and real-time PCR showed that the expression of ERAP2 and GCH1, the genes that regulate blood pressure and angiogenesis, was decreased in CD158a+ compared to CD158b+ NK cells. Consistently, the level of proteins involved in angiogenesis was altered in the serum of pre-eclampsia patients compared to healthy individuals. CONCLUSIONS CD158a+ NK cells increased while CD158b+ NK cells decreased in the peripheral blood of patients with pre-eclampsia compared to healthy individuals. The change in the frequency of CD158a+ /CD158b+ NK cells is related to the increase in blood pressure.
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Affiliation(s)
- Xiuxiu Xu
- Institute of Gerontology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China.,Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Xirui Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Ling Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Muziying Liu
- Anhui Institute of Pediatric Research, Anhui Provincial Children's Hospital, Hefei, P.R. China
| | - Ziming Hu
- Institute of Gerontology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China.,Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Jieqi Ke
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Binqing Fu
- Institute of Gerontology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China.,Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Yonggang Zhou
- Institute of Gerontology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China.,Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P.R. China
| | - Haiming Wei
- Institute of Gerontology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, P.R. China.,Institute of Immunology, University of Science and Technology of China, Hefei, Anhui, P.R. China
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10
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Janaszak-Jasiecka A, Siekierzycka A, Płoska A, Dobrucki IT, Kalinowski L. Endothelial Dysfunction Driven by Hypoxia-The Influence of Oxygen Deficiency on NO Bioavailability. Biomolecules 2021; 11:biom11070982. [PMID: 34356605 PMCID: PMC8301841 DOI: 10.3390/biom11070982] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death worldwide. The initial stage of CVDs is characterized by endothelial dysfunction, defined as the limited bioavailability of nitric oxide (NO). Thus, any factors that interfere with the synthesis or metabolism of NO in endothelial cells are involved in CVD pathogenesis. It is well established that hypoxia is both the triggering factor as well as the accompanying factor in cardiovascular disease, and diminished tissue oxygen levels have been reported to influence endothelial NO bioavailability. In endothelial cells, NO is produced by endothelial nitric oxide synthase (eNOS) from L-Arg, with tetrahydrobiopterin (BH4) as an essential cofactor. Here, we discuss the mechanisms by which hypoxia affects NO bioavailability, including regulation of eNOS expression and activity. What is particularly important is the fact that hypoxia contributes to the depletion of cofactor BH4 and deficiency of substrate L-Arg, and thus elicits eNOS uncoupling-a state in which the enzyme produces superoxide instead of NO. eNOS uncoupling and the resulting oxidative stress is the major driver of endothelial dysfunction and atherogenesis. Moreover, hypoxia induces impairment in mitochondrial respiration and endothelial cell activation; thus, oxidative stress and inflammation, along with the hypoxic response, contribute to the development of endothelial dysfunction.
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Affiliation(s)
- Anna Janaszak-Jasiecka
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.J.-J.); (A.S.); (A.P.)
- Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.pl), 80-211 Gdansk, Poland
| | - Anna Siekierzycka
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.J.-J.); (A.S.); (A.P.)
- Laboratory of Trace Elements Neurobiology, Institute of Pharmacology, Polish Academy of Sciences, 31-343 Krakow, Poland
| | - Agata Płoska
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.J.-J.); (A.S.); (A.P.)
- Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.pl), 80-211 Gdansk, Poland
| | - Iwona T. Dobrucki
- University of Illinois at Urbana-Champaign Beckman Institute for Advanced Science and Technology, 405 N Mathews Ave, MC-251, Urbana, IL 61801, USA;
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Leszek Kalinowski
- Department of Medical Laboratory Diagnostics—Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, 80-211 Gdansk, Poland; (A.J.-J.); (A.S.); (A.P.)
- Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.pl), 80-211 Gdansk, Poland
- BioTechMed Centre, Department of Mechanics of Materials and Structures, Gdansk University of Technology, 80-233 Gdansk, Poland
- Correspondence:
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11
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Wu Y, Ding Y, Ramprasath T, Zou MH. Oxidative Stress, GTPCH1, and Endothelial Nitric Oxide Synthase Uncoupling in Hypertension. Antioxid Redox Signal 2021; 34:750-764. [PMID: 32363908 PMCID: PMC7910417 DOI: 10.1089/ars.2020.8112] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 04/24/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023]
Abstract
Significance: Hypertension has major health consequences, which is associated with endothelial dysfunction. Endothelial nitric oxide synthase (eNOS)-produced nitric oxide (NO) signaling in the vasculature plays an important role in maintaining vascular homeostasis. Considering the importance of NO system, this review aims to provide a brief overview of the biochemistry of members of NO signaling, including GTPCH1 [guanosine 5'-triphosphate (GTP) cyclohydrolase 1], tetrahydrobiopterin (BH4), and eNOS. Recent Advances: Being NO signaling activators and regulators of eNOS signaling, BH4 treatment is getting widespread attention either as potential therapeutic agents or as preventive agents. Recent clinical trials also support that BH4 treatment could be considered a promising therapeutic in hypertension. Critical Issues: Under conditions of BH4 depletion, eNOS-generated superoxides trigger pathological events. Abnormalities in NO availability and BH4 deficiency lead to disturbed redox regulation causing pathological events. This disturbed signaling influences the development of systemic hypertension as well as pulmonary hypertension. Future Directions: Considering the importance of BH4 and NO to improve the translational significance, it is essential to continue research on this field to manipulate BH4 to increase the efficacy for treating hypertension. Thus, this review also examines the current state of knowledge on the effects of eNOS activators on preclinical models and humans to utilize this information for potential therapy.
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Affiliation(s)
- Yin Wu
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, Georgia, USA
| | - Ye Ding
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, Georgia, USA
| | - Tharmarajan Ramprasath
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, Georgia, USA
| | - Ming-Hui Zou
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, Georgia, USA
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12
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Hosni A, El-Twab SA, Abdul-Hamid M, Prinsen E, AbdElgawad H, Abdel-Moneim A, Beemster GTS. Cinnamaldehyde mitigates placental vascular dysfunction of gestational diabetes and protects from the associated fetal hypoxia by modulating placental angiogenesis, metabolic activity and oxidative stress. Pharmacol Res 2021; 165:105426. [PMID: 33453370 DOI: 10.1016/j.phrs.2021.105426] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/09/2021] [Accepted: 01/10/2021] [Indexed: 12/17/2022]
Abstract
Gestational diabetes mellitus (GDM) is a major pregnancy-related disorder with an increasing prevalence worldwide. GDM is associated with altered placental vascular functions and has severe consequences for fetal growth. There is no commonly accepted medication for GDM due to safety considerations. Actions of the currently limited therapeutic options focus exclusively on lowering the blood glucose level without paying attention to the altered placental vascular reactivity and remodelling. We used the fat-sucrose diet/streptozotocin (FSD/STZ) rat model of GDM to explore the efficacy of cinnamaldehyde (Ci; 20 mg/kg/day), a promising antidiabetic agent for GDM, and glyburide/metformin-HCl (Gly/Met; 0.6 + 100 mg/kg/day), as a reference drug for treatment of GDM, on the placenta structure and function at term pregnancy after their oral intake one week before mating onward. Through genome-wide transcriptome, biochemical, metabolome, metal analysis and histopathology we obtained an integrated understanding of their effects. GDM resulted in maternal and fetal hyperglycemia, fetal hyperinsulinemia and placental dysfunction with subsequent fetal anemia, hepatic iron deficiency and high serum erythropoietin level, reflecting fetal hypoxia. Differentially-regulated genes were overrepresented for pathways of angiogenesis, metabolic transporters and oxidative stress. Despite Ci and Gly/Met effectively alleviated the maternal and fetal glycemia, only Ci offered substantial protection from GDM-associated placental vasculopathy and prevented the fetal hypoxia. This was explained by Ci's impact on the molecular regulation of placental angiogenesis, metabolic activity and redox signaling. In conclusion, Ci provides a dual impact for the treatment of GDM at both maternal and fetal levels through its antidiabetic effect and the direct placental vasoprotective action. Lack of Gly/Met effectiveness to restore it's impaired functionality demonstrates the vital role of the placenta in developing efficient medications for GDM.
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Affiliation(s)
- Ahmed Hosni
- Molecular Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt; Laboratory for Integrated Molecular Physiology Research (IMPRES), Department of Biology, Faculty of Science, University of Antwerp, 2020, Antwerp, Belgium
| | - Sanaa Abd El-Twab
- Molecular Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt
| | - Manal Abdul-Hamid
- Histology and Cytology Division, Department of Zoology, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt
| | - Els Prinsen
- Laboratory for Integrated Molecular Physiology Research (IMPRES), Department of Biology, Faculty of Science, University of Antwerp, 2020, Antwerp, Belgium
| | - Hamada AbdElgawad
- Laboratory for Integrated Molecular Physiology Research (IMPRES), Department of Biology, Faculty of Science, University of Antwerp, 2020, Antwerp, Belgium; Department of Botany, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Adel Abdel-Moneim
- Molecular Physiology Division, Department of Zoology, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt.
| | - Gerrit T S Beemster
- Laboratory for Integrated Molecular Physiology Research (IMPRES), Department of Biology, Faculty of Science, University of Antwerp, 2020, Antwerp, Belgium
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13
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Zhu ML, Gao ZT, Lu JX, Wang Y, Wang G, Zhu TT, Li P, Liu C, Wang SX, Yang L. Amorphous nano-selenium quantum dots prevent pulmonary arterial hypertension through recoupling endothelial nitric oxide synthase. Aging (Albany NY) 2020; 13:3368-3385. [PMID: 33323558 PMCID: PMC7906187 DOI: 10.18632/aging.202215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 09/29/2020] [Indexed: 04/28/2023]
Abstract
AIMS We have previously reported that nano-selenium quantum dots (SeQDs) prevented endothelial dysfunction in atherosclerosis. This study is to investigate whether amorphous SeQDs (A-SeQDs) increase endogenous tetrahydrobiopterin biosynthesis to alleviate pulmonary arterial hypertension. RESULTS Both A-SeQDs and C-SeQDs were stable under physiological conditions, while the size of A-SeQDs was smaller than C-SeQDs by high resolution-transmission electron microscopy scanning. In monocrotaline-injected mice, oral administration of A-SeQDs was more effective to decrease pulmonary arterial pressure, compared to C-SeQDs and organic selenium. Further, A-SeQDs increased both nitric oxide productions and intracellular BH4 levels, upregulated dihydrofolate reductase activity in lungs, and improved pulmonary arterial remodeling. Gene deletion of dihydrofolate reductase abolished these effects produced by A-SeQDs in mice. Finally, the blood levels of tetrahydrobiopterin and selenium were decreased in patients with pulmonary arterial hypertension. CONCLUSION A-SeQDs increase intracellular tetrahydrobiopterin to prevent pulmonary arterial hypertension through recoupling endothelial nitric oxide synthase. METHODS Two polymorphs of SeQDs and A-SeQDs, and a crystalline form of SeQDs (C-SeQDs) were prepared through self-redox decomposition of selenosulfate precursor. Mice were injected with monocrotaline to induce pulmonary arterial hypertension in vivo. Pulmonary arterial pressure was measured.
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Affiliation(s)
- Mo-Li Zhu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, China
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Zhi-Tao Gao
- School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Jun-Xiu Lu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yang Wang
- Department of Pharmacy, The 3rd Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Ge Wang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, China
| | - Tian-Tian Zhu
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Peng Li
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Chao Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning, Hubei, China
| | - Shuang-Xi Wang
- Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, China
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning, Hubei, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Lin Yang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, China
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14
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Han BH, Song CH, Yoon JJ, Kim HY, Seo CS, Kang DG, Lee YJ, Lee HS. Anti-Vascular Inflammatory Effect of Ethanol Extract from Securinega suffruticosa in Human Umbilical Vein Endothelial Cells. Nutrients 2020; 12:nu12113448. [PMID: 33182831 PMCID: PMC7697010 DOI: 10.3390/nu12113448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 01/08/2023] Open
Abstract
Securiniga suffruticosa is known as a drug that has the effect of improving the blood circulation and relaxing muscles and tendons, thereby protects and strengthen kidney and spleen. Therefore, in this study, treatment of Securiniga suffruticosa showed protective effect of inhibiting the vascular inflammation in human umbilical vein endothelial cells (HUVECs) by inducing nitric oxide (NO) production and endothelial nitric oxide synthase (eNOS) coupling pathway. In this study, Securiniga suffruticosa suppressed TNF-α (Tumor necrosis factor–α) induced protein and mRNA levels of cell adhesion molecules such as intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1) and Interleukin-6 (IL-6). Pretreatment of HUVEC with Securiniga suffruticosa decreased the adhesion of HL-60 cells to Ox-LDL (Oxidized Low-Density-Lipoprotein)-induced HUVEC. Moreover, Securiniga suffruticosa inhibited TNF-α induced intracellular reactive oxygen species (ROS) production. Securiniga suffruticosa also inhibited phosphorylation of IκB-α in cytoplasm and translocation of NF-κB (Nuclear factor-kappa B) p65 to the nucleus. Securiniga suffruticosa increased NO production, as well increased the phosphorylation of eNOS and Akt (protein kinase B) which are related with NO production. In addition, Securiniga suffruticosa increased the protein expression of GTPCH (Guanosine triphosphate cyclohydrolase Ⅰ) and the production of BH4 in HUVEC which are related with eNOS coupling pathway. In conclusion, Securiniga suffruticosa has a protective effect against vascular inflammation and can be a potential therapeutic agent for early atherosclerosis.
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Affiliation(s)
- Byung Hyuk Han
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
| | - Chun Ho Song
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
| | - Jung Joo Yoon
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
| | - Hye Yoom Kim
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
| | - Chang Seob Seo
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 34054, Korea;
| | - Dae Gill Kang
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
| | - Yun Jung Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
- Correspondence: (Y.J.L.); (H.S.L.); Tel.: +82-63-850-6841 (Y.J.L. & H.S.L.); Fax: +82-63-850-7260 (Y.J.L. & H.S.L.)
| | - Ho Sub Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea; (B.H.H.); (C.H.S.); (J.J.Y.); (H.Y.K.); (D.G.K.)
- College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, 460, Iksan-daero, Iksan 54538, Jeonbuk, Korea
- Correspondence: (Y.J.L.); (H.S.L.); Tel.: +82-63-850-6841 (Y.J.L. & H.S.L.); Fax: +82-63-850-7260 (Y.J.L. & H.S.L.)
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15
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NOX5-induced uncoupling of endothelial NO synthase is a causal mechanism and theragnostic target of an age-related hypertension endotype. PLoS Biol 2020; 18:e3000885. [PMID: 33170835 PMCID: PMC7654809 DOI: 10.1371/journal.pbio.3000885] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 09/18/2020] [Indexed: 02/07/2023] Open
Abstract
Hypertension is the most important cause of death and disability in the elderly. In 9 out of 10 cases, the molecular cause, however, is unknown. One mechanistic hypothesis involves impaired endothelium-dependent vasodilation through reactive oxygen species (ROS) formation. Indeed, ROS forming NADPH oxidase (Nox) genes associate with hypertension, yet target validation has been negative. We re-investigate this association by molecular network analysis and identify NOX5, not present in rodents, as a sole neighbor to human vasodilatory endothelial nitric oxide (NO) signaling. In hypertensive patients, endothelial microparticles indeed contained higher levels of NOX5—but not NOX1, NOX2, or NOX4—with a bimodal distribution correlating with disease severity. Mechanistically, mice expressing human Nox5 in endothelial cells developed—upon aging—severe systolic hypertension and impaired endothelium-dependent vasodilation due to uncoupled NO synthase (NOS). We conclude that NOX5-induced uncoupling of endothelial NOS is a causal mechanism and theragnostic target of an age-related hypertension endotype. Nox5 knock-in (KI) mice represent the first mechanism-based animal model of hypertension. The causes of hypertension are not understood; treatments are symptomatic and prevent only few of the associated risks. This study applies network medicine to identify a subgroup of patients with NADPH oxidase 5-induced uncoupling of nitric oxide synthase as the cause of age-related hypertension, enabling a first-in-class mechanism-based treatment of hypertension.
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16
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Li XY, Zhang HM, An GP, Liu MY, Han SF, Jin Q, Song Y, Lin YM, Dong B, Wang SX, Meng LB. S-Nitrosylation of Akt by organic nitrate delays revascularization and the recovery of cardiac function in mice following myocardial infarction. J Cell Mol Med 2020; 25:27-36. [PMID: 33128338 PMCID: PMC7810919 DOI: 10.1111/jcmm.15263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/29/2020] [Accepted: 03/20/2020] [Indexed: 12/26/2022] Open
Abstract
The effects of long‐term nitrate therapy are compromised due to protein S‐Nitrosylation, which is mediated by nitric oxide (NO). This study is to determine the role of Akt S‐Nitrosylation in the recovery of heart functions after ischaemia. In recombinant Akt protein and in HEK293 cells, NO donor decreased Akt activity and induced Akt S‐Nitrosylation, but was abolished if Akt protein was mutated by replacing cysteine 296/344 with alanine (Akt‐C296/344A). In endothelial cells, NO induced Akt S‐Nitrosylation, reduced Akt activity and damaged multiple cellular functions including proliferation, migration and tube formation. These alterations were ablated if cells expressed Akt‐C296/344A mutant. In Apoe−/− mice, nitroglycerine infusion increased both Akt S‐Nitrosylation and infarct size, reduced Akt activity and capillary density, and delayed the recovery of cardiac function in ischaemic hearts, compared with mice infused with vehicle. Importantly, these in vivo effects of nitroglycerine in Apoe−/− mice were remarkably prevented by adenovirus‐mediated enforced expression of Akt‐C296/344A mutant. In conclusion, long‐term usage of organic nitrate may inactivate Akt to delay ischaemia‐induced revascularization and the recovery of cardiac function through NO‐mediated S‐Nitrosylation.
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Affiliation(s)
- Xiao-Yan Li
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Hong-Ming Zhang
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Gui-Peng An
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Mo-Yan Liu
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Shu-Fang Han
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Qun Jin
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Ying Song
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Yi-Meng Lin
- Department of Cardiology, the 960thHospital of Chinese People's Liberation Army, Jinan, China
| | - Bo Dong
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.,Department of Cardiology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Shuang-Xi Wang
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Ling-Bo Meng
- Department of Cardiology, The Second Hospital affiliated to Harbin Medical University, Harbin, China
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17
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Kim HK, Han J. Tetrahydrobiopterin in energy metabolism and metabolic diseases. Pharmacol Res 2020; 157:104827. [PMID: 32348841 DOI: 10.1016/j.phrs.2020.104827] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/13/2022]
Abstract
Tetrahydrobiopterin (BH4) is an endogenous cofactor for various enzymatic conversions of essential biomolecules including nitric oxide, tyrosine, dopamine, serotonin and phenylalanine. Depending on the physiological functions of these molecules, BH4 plays multiple roles in the cardiovascular, immune, nervous and endocrine systems. A deficiency of BH4 or an imbalance of the redox state of biopterin has been implicated in various cardiovascular and metabolic diseases. Therefore, supplementation with BH4 is considered as a therapeutic option for these diseases. In addition to the classical nitric oxide synthase (NOS)-dependent role of BH4, recent studies proposed novel NOS-independent roles of BH4 in health and disease conditions. This article reviews the updated role of BH4 in mitochondrial regulation, energy metabolism and cardiovascular and metabolic diseases.
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Affiliation(s)
- Hyoung Kyu Kim
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan, 47392, Republic of Korea; Smart Marine Therapeutics Center, Inje Univeristy, Busan, 47392, Republic of Korea
| | - Jin Han
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan, 47392, Republic of Korea; Smart Marine Therapeutics Center, Inje Univeristy, Busan, 47392, Republic of Korea.
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18
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Huang Q, Pan M, Zhou JP, Yin F. Overexpression of long non-coding RNA ANRIL promotes post-ischaemic angiogenesis and improves cardiac functions by targeting Akt. J Cell Mol Med 2020; 24:6860-6868. [PMID: 32400082 PMCID: PMC7299705 DOI: 10.1111/jcmm.15343] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/29/2020] [Accepted: 04/14/2020] [Indexed: 12/12/2022] Open
Abstract
Angiogenesis is critical for re‐establishing the blood supply to the surviving myocardium after myocardial infarction (MI). Long non‐coding RNA ANRIL (lncRNA‐ANRIL) has been reported to regulate endothelial functions in cardiovascular diseases. This study was to determine the role of lncRNA‐ANRIL in Akt regulation and cardiac functions after MI. Human umbilical vein endothelial cells (HUVECs) were exposed to oxygen‐glucose deprivation (OGD) to mimic in vivo ischaemia. The MI model in mice was induced by ligating left anterior descending coronary artery. OGD remarkably decreased lncRNA‐ANRIL expression level, reduced the phosphorylated levels of Akt and eNOS proteins, and inhibited NO release and cell viability, which were duplicated by shRNA‐mediated gene knockdown of lncRNA‐ANRIL. Conversely, all these effects induced by OGD were abolished by adenovirus‐mediated overexpression of lncRNA‐ANRIL in HUVECs. Further, OGD impaired cell migrations and tube formations in HUVECs, which were reversed by lncRNA‐ANRIL overexpression or Akt up‐regulation. RNA immunoprecipitation analysis indicated that the affinity of lncRNA‐ANRIL to Akt protein was increased in OGD‐treated cells. In animal studies, adenovirus‐mediated lncRNA‐ANRIL overexpression increased the phosphorylated levels of Akt and eNOS, promoted post‐ischaemic angiogenesis and improved heart functions in mice with MI surgery. LncRNA‐ANRIL regulates Akt phosphorylation to improve endothelial functions, which promotes angiogenesis and improves cardiac functions in mice following MI. In this perspective, targeting lncRNA‐ANRIL/Akt may be considered to develop a drug to treat angiogenesis‐related diseases.
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Affiliation(s)
- Qun Huang
- Departmen of Pediatrics, Xiangya Hospital, Central South University, Changsha, China.,Department of Child Health Care, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Miao Pan
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Ji-Peng Zhou
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Fei Yin
- Departmen of Pediatrics, Xiangya Hospital, Central South University, Changsha, China
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19
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Ma H, Dong XF, Cao XR, Hei NH, Li JL, Wang YL, Kong J, Dong B. Pro-Renin Receptor Overexpression Promotes Angiotensin II-Induced Abdominal Aortic Aneurysm Formation in Apolipoprotein E-Knockout Mice. Hum Gene Ther 2020; 31:639-650. [PMID: 31992084 DOI: 10.1089/hum.2019.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The pro-renin receptor (PRR) is an important novel component of the renin-angiotensin (Ang) system that has multiple functions, which are not yet completely understood. In this study, we aimed to explore the effect of PRR on the formation of Ang II-induced abdominal aortic aneurysm (AAA) in apolipoprotein E-knockout mice. We used Ang II (1.44 mg/kg/day) infusion to induce AAA followed by a treatment of saline, telmisartan, no treatment, Ad-EGFP, Ad-PRR, or Ad-PRR plus telmisartan. The incidence of AAA was 35%, 60%, 65%, 90%, and 55% in the Telmisartan, Vehicle, Ad-EGFP, Ad-PRR, and Ad-PRR+Telmisartan groups, respectively. Compared with the Vehicle and Ad-EGFP groups, PRR overexpression markedly increased macrophage infiltration; levels of proinflammatory cytokines, including monocyte chemoattractant protein-1 (MCP-1) and tumor necrosis factor-α (TNF-α); the expression and activity of MMP2 and MMP9; NOX2 and NOX4 protein and mRNA expression; nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity; extracellular-signal-regulated kinase (ERK) and P38MAPK expression; but decreased smooth muscle cells content in AAA. However, telmisartan reversed the adverse effects of PRR. In addition, ERK inhibitor PD98059 eliminated the acceleration of Ang II-induced AAA formation by PRR, and coadministration of telmisartan and PD98059 further abolished the adverse effects of PRR on Ang II-induced AAA formation. Thus, PRR plays an important role in the pathological development of AAA via both Ang II-dependent and Ang II-independent activation of ERK pathways. These results suggest that inhibition of PRR activation may be a promising approach to the treatment of AAA.
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Affiliation(s)
- Hui Ma
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Xue-Fei Dong
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.,University of Hull, Hull, United Kingdom
| | - Xin-Ran Cao
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Nai-Hao Hei
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Jun-Long Li
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Yu-Lin Wang
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Jing Kong
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Bo Dong
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
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20
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Le Y, Wei R, Yang K, Lang S, Gu L, Liu J, Hong T, Yang J. Liraglutide ameliorates palmitate-induced oxidative injury in islet microvascular endothelial cells through GLP-1 receptor/PKA and GTPCH1/eNOS signaling pathways. Peptides 2020; 124:170212. [PMID: 31770577 DOI: 10.1016/j.peptides.2019.170212] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 12/27/2022]
Abstract
In type 2 diabetes, lipotoxicity damages islet microvascular endothelial cells (IMECs), leading to pancreatic islet β cell dysfunction directly or indirectly. Glucagon-like peptide-1 (GLP-1) and its analogs have beneficial roles in endothelial cells. However, the protective effects of GLP-1 agents on IMECs and their potential mechanism remained obscure. In this study, exposure of MS-1 (a cell line derived from mouse IMECs) to different concentrations of palmitic acid (PA) was used to establish an injury model. The cells exposed to PA (0.25 mmol/L) were treated with a GLP-1 analog liraglutide (3, 10, 30, and 100 nmol/L). Reactive oxygen species (ROS) generation, apoptosis-related protein level, and endothelin-1 production were detected. The protein levels of signaling molecules were analyzed and specific inhibitors or blockers were used to identify involvement of signaling pathways in the effects of liraglutide. Results showed that PA significantly increased ROS generation and the levels of pro-apoptotic protein Bax, and decreased the levels of anti-apoptotic protein Bcl-2 and the mRNA expression and secretion of endothelin-1. Meanwhile, PA downregulated the protein levels of GLP-1 receptor (GLP-1R), phosphorylated protein kinase A (PKA), guanosine 5'-triphosphate cyclohydrolase 1 (GTPCH1), and endothelial nitric oxide synthase (eNOS). Furthermore, liraglutide ameliorated all these effects of PA in a dose-dependent manner. Importantly, GLP-1R antagonist exendin (9-39), PKA inhibitor H89, GTPCH1 inhibitor 2,4-diamino-6-hydroxypyrimidine, or NOS inhibitor N-nitro-l-arginine-methyl ester abolished the liraglutide-mediated amelioration in PA-impaired MS-1 cells. In conclusion, liraglutide ameliorates the PA-induced oxidative stress, apoptosis, and endothelin-1 secretion dysfunction in mouse IMECs through GLP-1R/PKA and GTPCH1/eNOS signaling pathways.
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Affiliation(s)
- Yunyi Le
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Rui Wei
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Kun Yang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Shan Lang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Liangbiao Gu
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Junling Liu
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China
| | - Tianpei Hong
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China.
| | - Jin Yang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China.
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21
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Lee I, Kim S, Nagar H, Choi SJ, Jeon BH, Piao S, Kim CS. CR6-interacting factor 1 deficiency reduces endothelial nitric oxide synthase activity by inhibiting biosynthesis of tetrahydrobiopterin. Sci Rep 2020; 10:842. [PMID: 31964986 PMCID: PMC6972730 DOI: 10.1038/s41598-020-57673-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 12/31/2019] [Indexed: 01/07/2023] Open
Abstract
Downregulation of CR6 interacting factor 1 (CRIF1) has been reported to induce mitochondrial dysfunction, resulting in reduced activity of endothelial nitric oxide synthase (eNOS) and NO production in endothelial cells. Tetrahydrobiopterin (BH4) is an important cofactor in regulating the balance between NO (eNOS coupling) and superoxide production (eNOS uncoupling). However, whether the decreased eNOS and NO production in CRIF1-deficient cells is associated with relative BH4 deficiency-induced eNOS uncoupling remains completely unknown. Our results showed that CRIF1 deficiency increased eNOS uncoupling and depleted levels of total biopterin and BH4 by reducing the enzymes of BH4 biosynthesis (GCH-1, PTS, SPR, and DHFR) in vivo and vitro, respectively. Supplementation of CRIF1-deficient cells with BH4 significantly increased the recovery of Akt and eNOS phosphorylation and NO synthesis. In addition, scavenging ROS with MitoTEMPO treatment replenished BH4 levels by elevating levels of GCH-1, PTS, and SPR, but with no effect on the level of DHFR. Downregulation of DHFR synthesis regulators p16 or p21 in CRIF1-deficient cells partially recovered the DHFR expression. In summary, CRIF1 deficiency inhibited BH4 biosynthesis and exacerbated eNOS uncoupling. This resulted in reduced NO production and increased oxidative stress, which contributes to endothelial dysfunction and is involved in the pathogenesis of cardiovascular diseases.
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Affiliation(s)
- Ikjun Lee
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Seonhee Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Harsha Nagar
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Su-Jeong Choi
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Byeong Hwa Jeon
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Shuyu Piao
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea.
| | - Cuk-Seong Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea.
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22
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NADPH oxidases and oxidase crosstalk in cardiovascular diseases: novel therapeutic targets. Nat Rev Cardiol 2019; 17:170-194. [PMID: 31591535 DOI: 10.1038/s41569-019-0260-8] [Citation(s) in RCA: 300] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/19/2019] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS)-dependent production of ROS underlies sustained oxidative stress, which has been implicated in the pathogenesis of cardiovascular diseases such as hypertension, aortic aneurysm, hypercholesterolaemia, atherosclerosis, diabetic vascular complications, cardiac ischaemia-reperfusion injury, myocardial infarction, heart failure and cardiac arrhythmias. Interactions between different oxidases or oxidase systems have been intensively investigated for their roles in inducing sustained oxidative stress. In this Review, we discuss the latest data on the pathobiology of each oxidase component, the complex crosstalk between different oxidase components and the consequences of this crosstalk in mediating cardiovascular disease processes, focusing on the central role of particular NADPH oxidase (NOX) isoforms that are activated in specific cardiovascular diseases. An improved understanding of these mechanisms might facilitate the development of novel therapeutic agents targeting these oxidase systems and their interactions, which could be effective in the prevention and treatment of cardiovascular disorders.
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23
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Pharmacological inhibition of guanosine triphosphate cyclohydrolase1 elevates tyrosine phosphorylation of caveolin1 and cellular senescence. Eur J Pharmacol 2019; 848:1-10. [PMID: 30690003 DOI: 10.1016/j.ejphar.2019.01.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/15/2019] [Accepted: 01/18/2019] [Indexed: 01/02/2023]
Abstract
The role of 2,4-diamino-6-hydroxypyrimidine (DAHP), on cellular-senescence remains unclear as differential effects of DAHP have been reported in cardiovascular and cerebrovascular systems. We investigated the effect of pharmacologically-induced guanosine-triphosphate-cyclohydrolase1 (GTPCH1)-inhibition, through DAHP, on cellular-senescence in experimentally-induced diabetic and non-diabetic Wistar rats. Cellular-senescence was evaluated through senescence-associated events, namely, cell-cycle-arrest of peripheral blood mononuclear cells (PBMNCs); myocardial DNA fragmentation, total antioxidant capacity (TAC), telomerase-activity, nicotinamide adenine dinucleotide (NAD+)-content and tyrosine14-phosphorylation of caveolin1 (pY14) in similarly-aged, pubertal Wistar rats with streptozotocin (STZ) and/or DAHP. Oxidative stress (OS) indices such as myocardial biopterin concentrations (tetrahydrobiopterin-BH4 and dihydrobiopterin-BH2) and plasma total nitrite and nitrate (NOx) were determined. DAHP, per se, exhibited distinct senescence; in addition, in STZ+DAHP (the cardiomyopathy model), there was a marked accumulation of cells in G0G1 phase, as evidenced through flow-cytometry analysis, as-well-as fragmented DNA, than the respective controls suggesting the DAHP-mediated onset of senescence in circulating cells and the myocardium, with or without STZ. Concentrations of BH4 and BH2, and NOx were impaired in STZ and/or DAHP, indicating elevated OS in the treatment groups. In the independent treatment groups or the combination treatment, typical senescence indicators including myocardial telomerase-activity, NAD+-content and TAC were significantly reduced, while there was a marked elevation in the concentrations of pY14 as compared to the respective controls, reinforcing the occurrence of senescence in PBMNCs and the myocardium. We postulate that DAHP promotes early onset of cellular-senescence, potentially through OS-mediated cellular events in diabetic or non-diabetic models.
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24
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Ryu Y, Kee HJ, Sun S, Seok YM, Choi SY, Kim GR, Kee SJ, Pflieger M, Kurz T, Kim HS, Jeong MH. Class I histone deacetylase inhibitor MS-275 attenuates vasoconstriction and inflammation in angiotensin II-induced hypertension. PLoS One 2019; 14:e0213186. [PMID: 30830950 PMCID: PMC6398866 DOI: 10.1371/journal.pone.0213186] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/15/2019] [Indexed: 01/20/2023] Open
Abstract
Objective Non-selective histone deacetylase (HDAC) inhibitors are known to improve hypertension. Here, we investigated the therapeutic effect and regulatory mechanism of the class I HDAC selective inhibitors, MS-275 and RGFP966, in angiotensin (Ang) II-induced hypertensive mice. Methods and results MS-275 inhibited the activity of HDAC1, HDAC2, and HDAC3, while RGFP966 weakly inhibited that of HDAC3 in a cell-free system. MS-275 and RGFP966 treatment reduced systolic blood pressure and thickness of the aorta wall in Ang II-induced hypertensive mice. MS-275 treatment reduced aorta collagen deposition, as determined by Masson’s trichrome staining. MS-275 decreased the components of the renin angiotensin system and increased vascular relaxation of rat aortic rings via the nitric oxide (NO) pathway. NO levels reduced by Ang II were restored by MS-275 treatment in vascular smooth muscle cells (VSMCs). However, MS-275 dose (3 mg·kg-1·day-1) was not enough to induce NO production in vivo. In addition, MS-275 did not prevent endothelial nitric oxide synthase (eNOS) uncoupling in the aorta of Ang II-induced mice. Treatment with MS-275 failed to inhibit Ang II-induced expression of NADPH oxidase (Nox)1, Nox2, and p47phox. MS-275 treatment reduced proinflammatory cytokines such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and monocyte chemoattractant protein (MCP)-1, as well as adhesion molecules. Histological analysis showed that Ang II-induced macrophage infiltration was reduced by MS-275 and RGFP966 administration. Conclusions Our results indicate that class I HDAC selective inhibitors may be good therapeutic agents for the treatment of hypertension through the regulation of vascular remodeling and vasoconstriction, as well as inflammation.
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Affiliation(s)
- Yuhee Ryu
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hae Jin Kee
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Simei Sun
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea.,Molecular Medicine, Brain Korea 21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea.,Zhoushan Hospital, Zhejiang University School of Medicine, Lincheng New District Zhoushan Zhejiang, China
| | - Young Mi Seok
- National Development Institute of Korean Medicine, Hwarang-ro, Gyeongsan-si, Gyeongsangbuk-do, Republic of Korea
| | - Sin Young Choi
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea.,Molecular Medicine, Brain Korea 21 Plus, Chonnam National University Graduate School, Gwangju, Republic of Korea
| | - Gwi Ran Kim
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Seung-Jung Kee
- Department of Laboratory Medicine, Chonnam National University, Medical School and Hospital, Gwangju, Republic of Korea
| | - Marc Pflieger
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr, 1, Düsseldorf, Germany
| | - Thomas Kurz
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr, 1, Düsseldorf, Germany
| | - Hyung-Seok Kim
- Department of Forsensic Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Myung Ho Jeong
- Heart Research Center of Chonnam National University Hospital, Gwangju, Republic of Korea.,Hypertension Heart Failure Research Center, Chonnam National University Hospital, Gwangju, Republic of Korea
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Yin S, Bai W, Li P, Jian X, Shan T, Tang Z, Jing X, Ping S, Li Q, Miao Z, Wang S, Ou W, Fei J, Guo T. Berberine suppresses the ectopic expression of miR-133a in endothelial cells to improve vascular dementia in diabetic rats. Clin Exp Hypertens 2018; 41:708-716. [PMID: 30472896 DOI: 10.1080/10641963.2018.1545846] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sen Yin
- Department of Neurology, Qilu Hospital, Shandong University, Jinan, China
| | - Wenwu Bai
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Peng Li
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Xu Jian
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Tichao Shan
- Department of Intensive Care Unit, Qilu Hospital, Shandong University, Jinan, China
| | - Zhenyu Tang
- Department of Intensive Care Unit, Qilu Hospital, Shandong University, Jinan, China
| | - Xuejiao Jing
- Department of Healthcare, Qilu Hospital, Shandong University, Jinan, China
| | - Song Ping
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Quanzhong Li
- Department of Cardiology, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Zhang Miao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Shuangxi Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Wensheng Ou
- Department of Liver Disease, Chenzhou NO. 1 People’s Hospital, Chenzhou, China
| | - Jianchun Fei
- Department of Anaesthesia, Qilu Hospital, Shandong University, Jinan, China
| | - Tao Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
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Li J, Liu S, Cao G, Sun Y, Chen W, Dong F, Xu J, Zhang C, Zhang W. Nicotine induces endothelial dysfunction and promotes atherosclerosis via GTPCH1. J Cell Mol Med 2018; 22:5406-5417. [PMID: 30091833 PMCID: PMC6201367 DOI: 10.1111/jcmm.13812] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/30/2018] [Indexed: 12/23/2022] Open
Abstract
Smoking is a major preventable risk factor for atherosclerosis. However, the causative link between cigarette smoke and atherosclerosis remains to be established. The objective of this study is to characterize the role of GTP cyclohydrolase 1 (GTPCH1), the rate-limiting enzyme for de novo tetrahydrobiopterin (BH4) synthesis, in the smoking-accelerated atherosclerosis and the mechanism involved. In vitro, human umbilical vein endothelial cells were treated with nicotine, a major component of cigarette smoke, which reduced the mRNA and protein levels of GTPCH1 and led to endothelial dysfunction. GTPCH1 overexpression or sepiapterin could attenuate nicotine-reduced nitric oxide and -increased reactive oxygen species levels. Mechanistically, human antigen R (HuR) bound with the adenylateuridylate-rich elements of the GTPCH1 3' untranslated region and increased its stability; nicotine inhibited HuR translocation from the nucleus to cytosol, which downregulated GTPCH1. In vivo, nicotine induced endothelial dysfunction and promoted atherosclerosis in ApoE-/- mice, which were attenuated by GTPCH1 overexpression or BH4 supplement. Our findings may provide a novel and promising approach to atherosclerosis treatment.
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Affiliation(s)
- Jingyuan Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineQilu Hospital of Shandong UniversityJinanShandongChina
| | - Shangming Liu
- Department of Histology and EmbryologyShandong University School of MedicineJinanChina
| | - Guangqing Cao
- Department of Cardiovascular SurgeryQilu Hospital of Shandong UniversityJinanShandongChina
| | - Yuanyuan Sun
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineQilu Hospital of Shandong UniversityJinanShandongChina
| | - Weiqian Chen
- Departmen of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular ScienceSoochow UniversitySuzhouChina
| | - Fajin Dong
- Department of UltrasonographySecond Clinical College of Jinan UniversityShenzhen People's HospitalShenzhenChina
| | - Jinfeng Xu
- Department of UltrasonographySecond Clinical College of Jinan UniversityShenzhen People's HospitalShenzhenChina
| | - Cheng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineQilu Hospital of Shandong UniversityJinanShandongChina
| | - Wencheng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health; The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineQilu Hospital of Shandong UniversityJinanShandongChina
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Zhang ZM, Wang BX, Ou WS, Lv YH, Li MM, Miao Z, Wang SX, Fei JC, Guo T. Administration of losartan improves aortic arterial stiffness and reduces the occurrence of acute coronary syndrome in aged patients with essential hypertension. J Cell Biochem 2018; 120:5713-5721. [PMID: 30362602 DOI: 10.1002/jcb.27856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 09/19/2018] [Indexed: 02/03/2023]
Abstract
BACKGROUNDS AND AIMS Increased arterial stiffness may increase cardiovascular morbidity and mortality. Angiotensin II type 1 receptor blocker losartan is potentially useful in controlling the central blood pressure and arterial stiffness in mild to moderate essential hypertension, while the effects of losartan in aged patients with essential hypertension are not entirely investigated. METHODS The carotid-femoral arterial pulse wave velocity (PWV) was measured in aged patients with essential hypertension. RESULTS In a cross-sectional study, PWV value was significantly higher in these old patients with essential hypertension, compared with patients without essential hypertension. Logistic regression analysis indicated that age, hypertension duration, and losartan treatment are risk factors of arterial stiffness. In a perspective study, long-term administration of losartan (50 mg/d) remarkably reduced PWV in aged patients with essential hypertension. In a longitudinal study, PWV is an independent predictor of the occurrence of acute coronary syndrome (ACS) in elderly patients with essential hypertension by using multivariate analysis. Further, the ACS occurrence was reduced by long-term administration of losartan in aged patients with essential hypertension, compared with the old hypertensive patients without taking losartan. CONCLUSION Losartan treatment is a negative risk factor of arterial stiffness and reduces the risk of ACS in aged patients with essential hypertension.
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Affiliation(s)
- Zhi-Mian Zhang
- Department of Cardiology, The Center of Health Examination, Qilu Hospital, Shandong University, Jinan, China
| | - Bing-Xiang Wang
- Department of Orthopedics, Provincial Hospital of Shandong, Jinan, China
| | - Wen-Sheng Ou
- Department of Liver Disease, Chenzhou No.1 People s Hospital, Chenzhou, China
| | - Yan-Hong Lv
- Department of Cardiology, The Center of Health Examination, Qilu Hospital, Shandong University, Jinan, China
| | - Ming-Min Li
- Department of Cardiology, The Center of Health Examination, Qilu Hospital, Shandong University, Jinan, China
| | - Zhang Miao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Shuang-Xi Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Jian-Chun Fei
- Department of Anaesthesia, Qilu Hospital, Shandong University, Jinan, China
| | - Tao Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
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28
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Zhu ML, Sun RL, Zhang HY, Zhao FR, Pan GP, Zhang C, Song P, Li P, Xu J, Wang S, Yin YL. Angiotensin II type 1 receptor blockers prevent aortic arterial stiffness in elderly patients with hypertension. Clin Exp Hypertens 2018; 41:657-661. [PMID: 30311805 DOI: 10.1080/10641963.2018.1529781] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Backgrounds and aims: Increased arterial stiffness may increase cardiovascular morbidity and mortality. Angiotensin II type 1 receptor blockers (ARBs) are potentially useful in controlling the central blood pressure and arterial stiffness in mild to moderate essential hypertension, while the effects of ARBs in aged patients with essential hypertension are not entirely investigated. Methods: The carotid-femoral arterial pulse wave velocity (PWV) was measured in aged patients with essential hypertension. Results: In a cross-sectional study, PWV value was significantly higher in these old patients with essential hypertension, compared to patients without essential hypertension. In correlation analysis, PWV was associated positively with age, hypertension duration, and carotid atherosclerosis. However, there was no relationship between PWV and gender in aged patients with essential hypertension. In a perspective study, 6-12 months administration of ARBs (losartan, 50 mg/day; telmisartan, 40 mg/day; valsartan 80 mg/day; irbesartan, 150 mg/day) remarkably reduced PWV in aged patients with essential hypertension. Regression analyses of multiple factors indicated that the effects of ARBs on arterial stiffness were not associated with the reduction of blood pressure. Conclusion: ARB treatment is a negative risk factor of arterial stiffness in aged patients with essential hypertension.
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Affiliation(s)
- Mo-Li Zhu
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Rui-Li Sun
- b Henan Key Laboratory of Immunology and Targeted Therapy, Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine in Henan Province, School of Laboratory Medicine, Xinxiang Medical University , Xinxiang , China
| | - He-Yun Zhang
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Fan-Rong Zhao
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Guo-Pin Pan
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Chong Zhang
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Ping Song
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Peng Li
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Jian Xu
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Shuangxi Wang
- a College of Pharmacy, Xinxiang Medical University , Xinxiang , China
| | - Ya-Ling Yin
- c School of Basic Medical Sciences, Xinxiang Medical University , Xinxiang , China
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Yu L, Liu H. Perillaldehyde prevents the formations of atherosclerotic plaques through recoupling endothelial nitric oxide synthase. J Cell Biochem 2018; 119:10204-10215. [DOI: 10.1002/jcb.27362] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 06/26/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Li Yu
- Department of Physiology, School of Basic Medical Sciences Jinzhou Medical University Jinzhou China
- Institue of Eyes Jinzhou Medical University Jinzhou China
| | - Hua Liu
- Institue of Eyes Jinzhou Medical University Jinzhou China
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Couto GK, Paula SM, Gomes-Santos IL, Negrão CE, Rossoni LV. Exercise training induces eNOS coupling and restores relaxation in coronary arteries of heart failure rats. Am J Physiol Heart Circ Physiol 2018; 314:H878-H887. [DOI: 10.1152/ajpheart.00624.2017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Exercise training (ET) has emerged as a nonpharmacological therapy for cardiovascular diseases because of its helpful milieu for improving vascular function. The aim of the present study was to assess whether ET reverses the alterations in vascular reactivity observed in heart failure (HF)-related coronary arteries and to elucidate the molecular mechanisms involved in these adjustments. Male Wistar rats were subjected to either coronary artery ligation or sham operation. Four weeks after the surgery, rats were divided into two groups: untrained HF (UHF) and exercise-trained HF (THF). ET was conducted on a treadmill for 8 wk. An untrained SO group was included in the study as a normal control. ET restored the impaired acetylcholine (ACh)- and sodium nitroprusside-induced relaxation in coronary arteries to levels of the control. Oxidative stress and reduced nitric oxide (NO) production were observed in UHF, whereas ET restored both parameters to the levels of the control. Expression levels of endothelial NO synthase (eNOS) and soluble guanylyl cyclase subunits were increased in coronary arteries of UHF rats but reduced in THF rats. Tetrahydrobiopterin restored ACh-induced NO production in the UHF group, indicating that eNOS was uncoupled. ET increased the eNOS dimer-to-monomer ratio and expression of GTP cyclohydrolase 1, thus increasing NO bioavailability. Taken together, these findings demonstrate that ET reverses the dysfunction of the NO/soluble guanylyl cyclase pathway present in coronary arteries of HF rats. These effects of ET are associated with increased GTP cyclohydrolase 1 expression, restoration of NO bioavailability, and reduced oxidative stress through eNOS coupling. NEW & NOTEWORTHY The present study provides a molecular basis for the exercise-induced improvement in coronary arteries function in heart failure. Increasing the expression of GTP cyclohydrolase 1, the rate-limiting enzyme in the de novo biosynthesis of tetrahydrobiopterin, exercise training couples endothelial nitric oxide synthase, reduces oxidative stress, and increases nitric oxide bioavailability and sensitivity in coronary arteries of heart failure rats.
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Affiliation(s)
- Gisele K. Couto
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - Suliana M. Paula
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | | | - Carlos Eduardo Negrão
- Heart Institute (InCor-HCFMUSP), University of São Paulo, São Paulo, Brazil
- School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
| | - Luciana V. Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
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Wang F, Ma H, Liang WJ, Yang JJ, Wang XQ, Shan MR, Chen Y, Jia M, Yin YL, Sun XY, Zhang JN, Peng QS, Chen YG, Liu LY, Li P, Guo T, Wang SX. Lovastatin upregulates microRNA-29b to reduce oxidative stress in rats with multiple cardiovascular risk factors. Oncotarget 2018; 8:9021-9034. [PMID: 28061433 PMCID: PMC5354712 DOI: 10.18632/oncotarget.14462] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 09/25/2016] [Indexed: 12/18/2022] Open
Abstract
AIMS Proteasome-linked oxidative stress is believed to cause endothelial dysfunction, an early event in cardiovascular diseases (CVD). Statin, as HMG-CoA reductase inhibitor, prevents endothelial dysfunction in CVD. However, the molecular mechanism of statin-mediated normalization of endothelial function is not completely elucidated. METHODS AND RESULTS Lovastatin time/dose-dependently increased miR-29b expression and decreased proteasome activity in cultured human umbilical vein endothelial cells (HUVECs). Anti-miR-29b or overexpression of PA200 abolished lovastatin-induced inhibition of proteasome activity in HUVECs. In contrast, pre-miR-29b or PA200 siRNA mimics these effects of lovastatin on proteasome activity. Lovastatin inhibited oxidative stress induced by multiple oxidants including ox-LDL, H2O2, TNFα, homocysteine thiolactone (HTL), and high glucose (HG), which were reversed by inhibition of miR-29b in HUVECs. Ex vivo analysis indicated that lovastatin normalized the acetylcholine-induced endothelium-dependent relaxation and the redox status in isolated rat aortic arteries exposure to multiple cardiovascular risk factors. In vivo analysis revealed that administration of lovastatin remarkably suppressed oxidative stress and prevented endothelial dysfunction in rats with hyperglycemia, dyslipidemia, and hyperhomocysteinemia, as well as increased miR-29b expressions, reduced PA200 protein levels, and suppression of proteasome activity in aortic tissues. CONCLUSION Upregulation of miR-29b expression is a common mechanism contributing to endothelial dysfunction induced by multiple cardiovascular risk factors through PA200-dependent proteasome-mediated oxidative stress, which is prevented by lovastatin.
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Affiliation(s)
- Fu Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Hui Ma
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Wen-Jing Liang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Jing-Jing Yang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Xue-Qing Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Mei-Rong Shan
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Yuan Chen
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Min Jia
- Department of Rehabilitation Medicine, Jinan Municipal Hospital of Traditional Chinese Medicine, Jinan, China
| | - Ya-Ling Yin
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Xue-Ying Sun
- Department of Pharmacology, Pharmaceutical College, Central South University, Changsha, China
| | - Jia-Ning Zhang
- Biology and Chemistry, Denison University, Granville, OH, USA
| | - Qi-Sheng Peng
- Key Laboratory for Zoonosis Research, Ministry of Education, Institute of Zoonosis, Jilin University, Changchun, China
| | - Yu-Guo Chen
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Li-Ying Liu
- Department of Pharmacology, Pharmaceutical College, Central South University, Changsha, China
| | - Peng Li
- Department of Pharmacology, College of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Tao Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
| | - Shuang-Xi Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University School of Medicine, Jinan, China
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32
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Antagonist of thromboxane A2 receptor by SQ29548 lowers DOCA-induced hypertension in diabetic rats. Eur J Pharmacol 2017; 815:298-303. [DOI: 10.1016/j.ejphar.2017.09.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 09/13/2017] [Accepted: 09/19/2017] [Indexed: 02/03/2023]
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33
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Ma H, Liang WJ, Shan MR, Wang XQ, Zhou SN, Chen Y, Guo T, Li P, Yu HY, Liu C, Yin YL, Wang YL, Dong B, Pang XY, Wang SX. Pravastatin activates activator protein 2 alpha to augment the angiotensin II-induced abdominal aortic aneurysms. Oncotarget 2017; 8:14294-14305. [PMID: 28179583 PMCID: PMC5362406 DOI: 10.18632/oncotarget.15104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 01/16/2017] [Indexed: 01/02/2023] Open
Abstract
We have previously reported that activation of AMP-activated kinase alpha 2 (AMPKa2) by nicotine or angiotensin II (AngII) instigates formation of abdominal aortic aneurysms (AAA) in Apoe−/− mice. Statins, used to treat hyperlipidemia widely, activate AMPK in vascular cells. We sought to examine the effects of pravastatin on AAA formation and uncover the molecular mechanism. The AAA model was induced by AngII and evaluated by incidence, elastin degradation, and maximal abdominal aortic diameter in Apoe−/− mice. The phosphorylated levels of AMPKa2 and activator protein 2 alpha (AP-2a) were examined in cultured vascular smooth muscle cells (VSMCs) or in mice. We observed that pravastatin (50 mg/kg/day, 8 weeks) remarkably increased the AngII-induced AAA incidence in mice. In VSMCs, pravastatin increased the levels of pAMPK, pAP-2a, and MMP2 in both basal and AngII-stressed conditions, which were abolished by tempol and compound C. Pravastatin-upregulated MMP2 was abrogated by AMPKa2 or AP-2a siRNA. Lentivirus-mediated gene silence of AMPKa2 or AP-2a abolished pravastatin-worsened AAA formations in AngII-infused Apoe−/− mice. Clinical investigations demonstrated that both AMPKa2 and AP-2a phosphorylations were increased in AAA patients or human subjects taking pravastatin. In conclusion, pravastatin promotes AAA formation through AMPKa2-dependent AP-2a activations.
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Affiliation(s)
- Hui Ma
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China.,Department of Pediatrics and Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Wen-Jing Liang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Mei-Rong Shan
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Xue-Qing Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Sheng-Nan Zhou
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Yuan Chen
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Tao Guo
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Peng Li
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Hai-Ya Yu
- Department of Neurology, The People's Hospital of Xishui County, Huangang, Hubei, China
| | - Chao Liu
- Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China
| | - Ya-Ling Yin
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Yu-Lin Wang
- Department of Pediatrics and Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Bo Dong
- Department of Pediatrics and Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Xin-Yan Pang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Shuang-Xi Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China.,College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
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Li P, Zhu ML, Pan GP, Lu JX, Zhao FR, Jian X, Liu LY, Wan GR, Chen Y, Ping S, Wang SX, Hu CP. Vitamin B6 prevents isocarbophos-induced vascular dementia in rats through N-methyl-D-aspartate receptor signaling. Clin Exp Hypertens 2017; 40:192-201. [PMID: 28872356 DOI: 10.1080/10641963.2017.1356844] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND We have previously reported that the long-term exposure of organophosphorus induces vascular dementia (VD) in rats. As a coenzyme, vitamin B6 is mainly involved in the regulation of metabolisms. Whether vitamin B6 improves VD remains unknown. METHODS The model of VD was induced by feeding rats with isocarbophos (0.5 mg/kg per two day, 12 weeks). The blood flow of the posterior cerebral artery (PCA) in rat was assessed by transcranial Doppler (TCD). The learning and memory were evaluated by the Morris Water Maze (MWM) test. RESULTS Administration of vitamin B6 increased the blood flow in the right and left posterior cerebral arteries and improved the functions of learning and memory in isocarbophos-treated rats. Vitamin B6 increased the protein levels of N-methyl-D-aspartate receptor (NMDAR) 2B, postsynaptic densities (PSDs) protein 95, and calmodulin-dependent protein kinase II (CaMK-II) in the hippocampus, which were decreased by isocarbophos in rats. Morphological analysis by light microscope and electronic microscope indicated disruptions of the hippocampus caused by isocarbophos were normalized by vitamin B6. Importantly, the antagonist of NMDAR signaling by eliprodil abolished these beneficial effects produced by vitamin B6 on PCA blood flow, learning, memory, and hippocampus structure in rats, as well as the protein expression of NMDAR 2B, PSDs protein 95, and CaMK-II in the hippocampus. CONCLUSION Vitamin B6 activates NMDAR signaling to prevent isocarbophos-induced VD in rats.
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Affiliation(s)
- Peng Li
- a Department of Pharmacology , Xiangya School of Pharmaceutical Sciences, Central South University , Changsha , China.,b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Mo-Li Zhu
- c The Key Laboratory of Cardiovascular Remodeling and Function Research , Qilu Hospital, Shandong University , Jinan , China
| | - Guo-Pin Pan
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Jun-Xiu Lu
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Fan-Rong Zhao
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Xu Jian
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Li-Ying Liu
- a Department of Pharmacology , Xiangya School of Pharmaceutical Sciences, Central South University , Changsha , China.,b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Guang-Rui Wan
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Yuan Chen
- c The Key Laboratory of Cardiovascular Remodeling and Function Research , Qilu Hospital, Shandong University , Jinan , China
| | - Song Ping
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China
| | - Shuang-Xi Wang
- b College of Pharmacy , School of Basic Medicine and Sanquan Medical College, Xinxiang Medical University , Xinxiang , China.,c The Key Laboratory of Cardiovascular Remodeling and Function Research , Qilu Hospital, Shandong University , Jinan , China
| | - Chang-Ping Hu
- a Department of Pharmacology , Xiangya School of Pharmaceutical Sciences, Central South University , Changsha , China
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35
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Wu J, Wang J, Li X, Liu X, Yu X, Tian Y. MicroRNA-145 Mediates the Formation of Angiotensin II-Induced Murine Abdominal Aortic Aneurysm. Heart Lung Circ 2017; 26:619-626. [PMID: 27956160 DOI: 10.1016/j.hlc.2016.10.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 09/29/2016] [Accepted: 10/23/2016] [Indexed: 01/22/2023]
Abstract
BACKGROUND MicroRNA-145 (miR-145) has been implicated in vascular smooth muscle cell differentiation, but the underlying mechanisms have not been fully understood, especially their role in abdominal aortic aneurysm (AAA) expansion. Here, we sought to explore and define the mechanisms of miR-145 function in the experimental AAA models in AngII-infused ApoE-/- mice. METHODS miR-145 was overexpressed in ApoE-/- mice via lentivirus infection, and then the incidence of AAA, maximum abdominal aortic diameter, elastin degradation and MMP2 activation were determined in AngII-infused ApoE-/- mice. RESULTS In vivo overexpression of miR-145 by lentivirus infection greatly decreased the incidence of AAA, maximum abdominal aortic diameter, and elastin degradation, accompanied with downregulation of MMP2 activation in AngII-infused ApoE-/- mice. Cell culture assays indicated that miR-145 inhibited AngII-induced upregulation of MMP2 gene expression. In contrast, deficiency of MMP2 abolished the effects of miR-145 on AngII-induced elastin and collagens degradations in ApoE-/- mice. CONCLUSION These data suggest that regulation of expression of miR-145 may be a potential therapeutic option for vascular disease progression such as AAA expansion.
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Affiliation(s)
- Jing Wu
- School of Nursing, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Jun Wang
- Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China
| | - Xiaoou Li
- Tumor Hospital of Jilin Province, Changchun 130021, China
| | - Xiaofeng Liu
- Tumor Hospital of Jilin Province, Changchun 130021, China
| | - Xiuyan Yu
- Tumor Hospital of Jilin Province, Changchun 130021, China
| | - Yunling Tian
- The First Hospital of Lanzhou University, Lanzhou 730000, China.
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36
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Chuaiphichai S, Crabtree MJ, Mcneill E, Hale AB, Trelfa L, Channon KM, Douglas G. A key role for tetrahydrobiopterin-dependent endothelial NOS regulation in resistance arteries: studies in endothelial cell tetrahydrobiopterin-deficient mice. Br J Pharmacol 2017; 174:657-671. [PMID: 28128438 PMCID: PMC5368052 DOI: 10.1111/bph.13728] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 01/22/2017] [Accepted: 01/23/2017] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE The cofactor tetrahydrobiopterin (BH4) is a critical regulator of endothelial NOS (eNOS) function, eNOS-derived NO and ROS signalling in vascular physiology. To determine the physiological requirement for de novo endothelial cell BH4 synthesis for the vasomotor function of resistance arteries, we have generated a mouse model with endothelial cell-specific deletion of Gch1, encoding GTP cyclohydrolase 1 (GTPCH), an essential enzyme for BH4 biosynthesis, and evaluated BH4-dependent eNOS regulation, eNOS-derived NO and ROS generation. EXPERIMENTAL APPROACH The reactivity of mouse second-order mesenteric arteries was assessed by wire myography. High performance liquid chromatography was used to determine BH4, BH2 and biopterin. Western blotting was used for expression analysis. KEY RESULTS Gch1fl/fl Tie2cre mice demonstrated reduced GTPCH protein and BH4 levels in mesenteric arteries. Deficiency in endothelial cell BH4 leads to eNOS uncoupling, increased ROS production and loss of NO generation in mesenteric arteries of Gch1fl/fl Tie2cre mice. Gch1fl/fl Tie2cre mesenteric arteries had enhanced vasoconstriction to U46619 and phenylephrine, which was abolished by L-NAME. Endothelium-dependent vasodilatations to ACh and SLIGRL were impaired in mesenteric arteries from Gch1fl/fl Tie2cre mice, compared with those from wild-type littermates. Loss of eNOS-derived NO-mediated vasodilatation was associated with increased eNOS-derived H2 O2 and cyclooxygenase-derived vasodilator in Gch1fl/fl Tie2cre mesenteric arteries. CONCLUSIONS AND IMPLICATIONS Endothelial cell Gch1 and BH4-dependent eNOS regulation play pivotal roles in maintaining vascular homeostasis in resistance arteries. Therefore, targeting vascular Gch1 and BH4 biosynthesis may provide a novel therapeutic target for the prevention and treatment of microvascular dysfunction in patients with cardiovascular disease.
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Affiliation(s)
- Surawee Chuaiphichai
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Mark J Crabtree
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Eileen Mcneill
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Ashley B Hale
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Lucy Trelfa
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Keith M Channon
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
| | - Gillian Douglas
- British Heart Foundation Centre of Research Excellence, Division of Cardiovascular MedicineUniversity of OxfordOxfordUK
- Wellcome Trust Centre for Human GeneticsUniversity of OxfordOxfordUK
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Yin YL, Zhu ML, Wan J, Zhang C, Pan GP, Lu JX, Ping S, Chen Y, Zhao FR, Yu HY, Guo T, Jian X, Liu LY, Zhang JN, Wan GR, Wang SX, Li P. Traditional Chinese medicine xin-mai-jia recouples endothelial nitric oxide synthase to prevent atherosclerosis in vivo. Sci Rep 2017; 7:43508. [PMID: 28252100 PMCID: PMC5333158 DOI: 10.1038/srep43508] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 01/27/2017] [Indexed: 11/09/2022] Open
Abstract
Endothelial dysfunction, which is caused by endothelial nitric oxide synthase (eNOS) uncoupling, is an initial step in atherosclerosis. This study was designed to explore whether Chinese medicine xin-mai-jia (XMJ) recouples eNOS to exert anti-atherosclerotic effects. Pretreatment of XMJ (25, 50, 100 μg/ml) for 30 minutes concentration-dependently activated eNOS, improved cell viabilities, increased NO generations, and reduced ROS productions in human umbilical vein endothelial cells incubated with H2O2 for 2 hours, accompanied with restoration of BH4. Importantly, these protective effects produced by XMJ were abolished by eNOS inhibitor L-NAME or specific eNOS siRNA in H2O2-treated cells. In ex vivo experiments, exposure of isolated aortic rings from rats to H2O2 for 6 hours dramatically impaired acetylcholine-induced vasorelaxation, reduced NO levels and increased ROS productions, which were ablated by XMJ in concentration-dependent manner. In vivo analysis indicated that administration of XMJ (0.6, 2.0, 6.0 g/kg/d) for 12 weeks remarkably recoupled eNOS and reduced the size of carotid atherosclerotic plaque in rats feeding with high fat diet plus balloon injury. In conclusion, XMJ recouples eNOS to prevent the growth of atherosclerosis in rats. Clinically, XMJ is potentially considered as a medicine to treat patients with atherosclerosis.
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Affiliation(s)
- Ya-Ling Yin
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Mo-Li Zhu
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Jia Wan
- Department of Drug and Cosmetics Supervision, Henan Food and Drug Administration, Zhengzhou, 450018, China
| | - Chong Zhang
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Guo-Pin Pan
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Jun-Xiu Lu
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Song Ping
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Yuan Chen
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Fan-Rong Zhao
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China
| | - Hai-Ya Yu
- Department of Neurology, The People's Hospital of Xishui County, Huangang, Hubei, China
| | - Tao Guo
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Xu Jian
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Li-Ying Liu
- Sanquan College of Xinxiang Medical University, Xinxiang, 453003, China.,Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Jia-Ning Zhang
- Biology and Chemistry, Denison University, Granville, OH, USA
| | - Guang-Rui Wan
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
| | - Shuang-Xi Wang
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China.,The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Peng Li
- College of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, China
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38
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Bailey J, Shaw A, Fischer R, Ryan BJ, Kessler BM, McCullagh J, Wade-Martins R, Channon KM, Crabtree MJ. A novel role for endothelial tetrahydrobiopterin in mitochondrial redox balance. Free Radic Biol Med 2017; 104:214-225. [PMID: 28104455 PMCID: PMC5338462 DOI: 10.1016/j.freeradbiomed.2017.01.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 02/07/2023]
Abstract
The redox co-factor tetrahydrobiopterin (BH4) regulates nitric oxide (NO) and reactive oxygen species (ROS) production by endothelial NOS (eNOS) and is an important redox-dependent signalling molecule in the endothelium. Loss of endothelial BH4 is observed in cardiovascular disease (CVD) states and results in decreased NO and increased superoxide (O2-) generation via eNOS uncoupling. Genetic mouse models of augmented endothelial BH4 synthesis have shown proof of concept that endothelial BH4 can alter CVD pathogenesis. However, clinical trials of BH4 therapy in vascular disease have been limited by systemic oxidation, highlighting the need to explore the wider roles of BH4 to find novel therapeutic targets. In this study, we aimed to elucidate the effects of BH4 deficiency on mitochondrial function and bioenergetics using targeted knockdown of the BH4 synthetic enzyme, GTP Cyclohydrolase I (GTPCH). Knockdown of GTPCH by >90% led to marked loss of cellular BH4 and a striking induction of O2- generation in the mitochondria of murine endothelial cells. This effect was likewise observed in BH4-depleted fibroblasts devoid of NOS, indicating a novel NOS-independent role for BH4 in mitochondrial redox signalling. Moreover, this BH4-dependent, mitochondria-derived ROS further oxidised mitochondrial BH4, concomitant with changes in the thioredoxin and glutathione antioxidant pathways. These changes were accompanied by a modest increase in mitochondrial size, mildly attenuated basal respiratory function, and marked changes in the mitochondrial proteome and cellular metabolome, including the accumulation of the TCA intermediate succinate. Taken together, these data reveal a novel NOS-independent role for BH4 in the regulation of mitochondrial redox signalling and bioenergetic metabolism.
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Affiliation(s)
- Jade Bailey
- BHF Centre of Research Excellence, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Andrew Shaw
- BHF Centre of Research Excellence, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, United Kingdom
| | - Brent J Ryan
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, South Parks Road, Oxford OX1 3QX, United Kingdom
| | - Benedikt M Kessler
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, United Kingdom
| | - James McCullagh
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom
| | - Richard Wade-Martins
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, South Parks Road, Oxford OX1 3QX, United Kingdom
| | - Keith M Channon
- BHF Centre of Research Excellence, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom.
| | - Mark J Crabtree
- BHF Centre of Research Excellence, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, United Kingdom
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Lowe FJ, Luettich K, Talikka M, Hoang V, Haswell LE, Hoeng J, Gaca MD. Development of an Adverse Outcome Pathway for the Onset of Hypertension by Oxidative Stress-Mediated Perturbation of Endothelial Nitric Oxide Bioavailability. ACTA ACUST UNITED AC 2017. [DOI: 10.1089/aivt.2016.0031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Frazer J. Lowe
- British American Tobacco (Investments) Ltd., Group Research and Development, Southampton, United Kingdom
| | - Karsta Luettich
- Philip Morris International R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Neuchatel, Switzerland
| | - Marja Talikka
- Philip Morris International R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Neuchatel, Switzerland
| | - Vy Hoang
- Selventa, One Alewife Center, Cambridge, Massachusetts
| | - Linsey E. Haswell
- British American Tobacco (Investments) Ltd., Group Research and Development, Southampton, United Kingdom
| | - Julia Hoeng
- Philip Morris International R&D, Philip Morris Products S.A. (part of Philip Morris International group of companies), Neuchatel, Switzerland
| | - Marianna D. Gaca
- British American Tobacco (Investments) Ltd., Group Research and Development, Southampton, United Kingdom
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Zhang Z, Jiang M, Xie X, Yang H, Wang X, Xiao L, Wang N. Oleanolic acid ameliorates high glucose-induced endothelial dysfunction via PPARδ activation. Sci Rep 2017; 7:40237. [PMID: 28067284 PMCID: PMC5220361 DOI: 10.1038/srep40237] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 12/02/2016] [Indexed: 02/07/2023] Open
Abstract
Oleanolic acid (3β-hydroxyolean-12-en-28-oic acid, OA) is a pentacyclic triterpenes widely distributed in food, medicinal plants and nutritional supplements. OA exhibits various pharmacological properties, such as hepatoprotective and anti-tumor effects. In this study, we analyzed the effect of OA on endothelial dysfunction induced by high glucose in human vascular endothelial cells (ECs). Western blotting showed that OA attenuated high glucose-reduced nitric production oxide (NO) as well as Akt-Ser473 and eNOS-Ser1177 phosphorylation in cultured human umbilical vein ECs (HUVECs). Next, luciferase reporter assay showed that OA activated peroxisome proliferators-activated receptor δ (PPARδ) activity. Quantitative reverse transcriptase PCR (qRT-PCR) demonstrated that OA increased the expressions of PPARδ target genes (PDK4, ADRP and ANGPTL4) in ECs. Meanwhile, the induced expressions of PDK4, ADRP and ANGPTL4 by OA were inhibited by GSK0660, a specific antagonist of PPARδ. In addition, inhibition of PPARδ abolished OA-induced the Akt-Ser473 and eNOS-Ser1177 phosphorylation, and NO production. Finally, by using Multi Myograph System, we showed that OA prevented high glucose-impaired vasodilation. This protective effect on vasodilation was inhibited in aortic rings pretreated with GSK0660. Collectively, we demonstrated that OA improved high glucose-impaired endothelial function via a PPARδ-mediated mechanism and through eNOS/Akt/NO pathway.
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Affiliation(s)
- Zihui Zhang
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Manli Jiang
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Xinya Xie
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Haixia Yang
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Xinfeng Wang
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Lei Xiao
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Nanping Wang
- Cardiovascular Research Center, Xi'an Jiaotong University, Xi'an, 710061, China.,The Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, 116044, China
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Edgar KS, Galvin OM, Collins A, Katusic ZS, McDonald DM. BH4-Mediated Enhancement of Endothelial Nitric Oxide Synthase Activity Reduces Hyperoxia-Induced Endothelial Damage and Preserves Vascular Integrity in the Neonate. Invest Ophthalmol Vis Sci 2017; 58:230-241. [PMID: 28114584 PMCID: PMC6039076 DOI: 10.1167/iovs.16-20523] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/06/2016] [Indexed: 01/11/2023] Open
Abstract
Purpose Endothelial nitric oxide synthase (eNOS)-derived nitric oxide (NO) has important vasoprotective functions that are compromised in the vasodegenerative phase of retinopathy of prematurity, owing to hyperoxia-induced depletion of the essential NOS cofactor BH4. Because modulating eNOS function can be beneficial or detrimental, our aim was to investigate the effect of BH4 supplementation on eNOS function and vascular regression in hyperoxia. Methods Endothelial-specific eNOS-green fluorescent protein (GFP) overexpressing mice at postnatal day 7 (P7) were exposed to hyperoxia for 48 hours in the presence or absence of supplemental BH4, achieved by administration of sepiapterin, a stable BH4 precursor. Tissue was collected either for retinal flat mounts that were stained with lectin to determine the extent of vessel coverage or for analysis of BH4 by high-performance liquid chromatography, nitrotyrosine (NT) marker by Western blotting, VEGF expression by ELISA, and NOS activity by arginine-to-citrulline conversion. Primary retinal microvascular endothelial cells (RMEC) were similarly treated, and hyperoxia-induced damage was determined. Results Sepiapterin effectively enhanced BH4 levels in hyperoxia-exposed retinas and brains, elevated NOS activity, and reduced NT-modified protein, leading to reversal of the exacerbated vasoregression observed in the presence of eNOS overexpression. In RMECs, hyperoxia-mediated depletion of BH4 dysregulated the redox balance by reducing nitrite and elevating superoxide and impaired proliferative ability. BH4 supplementation restored normal RMEC proliferation in vitro and also in vivo, providing a mechanistic link with the enhanced vascular coverage in eNOS-GFP retinas. Conclusions These results demonstrate that BH4 supplementation corrects hyperoxia-induced RMEC dysfunction and preserves vascular integrity by enhancing eNOS function.
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Affiliation(s)
- Kevin S. Edgar
- Centre for Experimental Medicine, Queen's University Belfast, United Kingdom
| | - Orla M. Galvin
- Centre for Experimental Medicine, Queen's University Belfast, United Kingdom
| | - Anthony Collins
- Centre for Experimental Medicine, Queen's University Belfast, United Kingdom
| | - Zvonimir S. Katusic
- Department of Anesthesiology and Pharmacology, Mayo Clinic, Minnesota, United States
| | - Denise M. McDonald
- Centre for Experimental Medicine, Queen's University Belfast, United Kingdom
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Ke J, Wei R, Yu F, Zhang J, Hong T. Liraglutide restores angiogenesis in palmitate-impaired human endothelial cells through PI3K/Akt-Foxo1-GTPCH1 pathway. Peptides 2016; 86:95-101. [PMID: 27777063 DOI: 10.1016/j.peptides.2016.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/21/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022]
Abstract
Glucagon-like peptide-1 (GLP-1) and its analogues have a beneficial role in cardiovascular system. Here, we aimed to investigate whether liraglutide, a GLP-1 analogue, modulated angiogenesis impaired by palmitic acid (PA) in cultured human umbilical vein endothelial cells (HUVECs). Cells were incubated with liraglutide (3-100 nmol/L) in the presence of PA (0.5mmol/L), and endothelial tube formation was observed and quantified. The protein levels of signaling molecules were analyzed and the specific inhibitors were used to identify the signaling pathways through which liraglutide affected angiogenesis. Results showed that liraglutide ameliorated endothelial tube formation impaired by PA in HUVECs in a dose-dependent manner. Meanwhile, liraglutide increased the phosphorylation of Akt and forkhead box O1 (Foxo1), and upregulated the levels of guanosine 5'-triphosphate cyclohydrolase 1 (GTPCH1) and endothelial nitric oxide synthase (eNOS) in PA-impaired HUVECs. Notably, addition of the PI3K inhibitor LY294002, Foxo1 nuclear export inhibitor trifluoperazine dihydrochloride (TFP), GTPCH1 inhibitor 2,4-diamino-6-hydroxypyrimidine (DAHP) or NOS inhibitor N-nitro-l-arginine-methyl ester (L-NAME) eliminated the angiogenic effect of liraglutide. Moreover, either LY294002 or TFP abolished the liraglutide-induced upregulation of GTPCH1 and eNOS protein levels. In conclusion, liraglutide restores angiogenesis in PA-impaired HUVECs. The effect is mediated via upregulation of GTPCH1 and eNOS levels in a PI3K/Akt-Foxo1-dependent mechanism.
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Affiliation(s)
- Jing Ke
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Rui Wei
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Fei Yu
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Jingjing Zhang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Tianpei Hong
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China.
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Li P, Yin YL, Guo T, Sun XY, Ma H, Zhu ML, Zhao FR, Xu P, Chen Y, Wan GR, Jiang F, Peng QS, Liu C, Liu LY, Wang SX. Inhibition of Aberrant MicroRNA-133a Expression in Endothelial Cells by Statin Prevents Endothelial Dysfunction by Targeting GTP Cyclohydrolase 1 in Vivo. Circulation 2016; 134:1752-1765. [PMID: 27765794 PMCID: PMC5120771 DOI: 10.1161/circulationaha.116.017949] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 09/20/2016] [Indexed: 12/17/2022]
Abstract
Supplemental Digital Content is available in the text. Background: GTP cyclohydrolase 1 (GCH1) deficiency is critical for endothelial nitric oxide synthase uncoupling in endothelial dysfunction. MicroRNAs (miRs) are a class of regulatory RNAs that negatively regulate gene expression. We investigated whether statins prevent endothelial dysfunction via miR-dependent GCH1 upregulation. Methods: Endothelial function was assessed by measuring acetylcholine-induced vasorelaxation in the organ chamber. MiR-133a expression was assessed by quantitative reverse transcription polymerase chain reaction and fluorescence in situ hybridization. Results: We first demonstrated that GCH1 mRNA is a target of miR-133a. In endothelial cells, miR-133a was robustly induced by cytokines/oxidants and inhibited by lovastatin. Furthermore, lovastatin upregulated GCH1 and tetrahydrobiopterin, and recoupled endothelial nitric oxide synthase in stressed endothelial cells. These actions of lovastatin were abolished by enforced miR-133a expression and were mirrored by a miR-133a antagomir. In mice, hyperlipidemia- or hyperglycemia-induced ectopic miR-133a expression in the vascular endothelium, reduced GCH1 protein and tetrahydrobiopterin levels, and impaired endothelial function, which were reversed by lovastatin or miR-133a antagomir. These beneficial effects of lovastatin in mice were abrogated by in vivo miR-133a overexpression or GCH1 knockdown. In rats, multiple cardiovascular risk factors including hyperglycemia, dyslipidemia, and hyperhomocysteinemia resulted in increased miR-133a vascular expression, reduced GCH1 expression, uncoupled endothelial nitric oxide synthase function, and induced endothelial dysfunction, which were prevented by lovastatin. Conclusions: Statin inhibits aberrant miR-133a expression in the vascular endothelium to prevent endothelial dysfunction by targeting GCH1. Therefore, miR-133a represents an important therapeutic target for preventing cardiovascular diseases.
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Affiliation(s)
- Peng Li
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Ya-Ling Yin
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Tao Guo
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Xue-Ying Sun
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Hui Ma
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Mo-Li Zhu
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Fan-Rong Zhao
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Ping Xu
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Yuan Chen
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Guang-Rui Wan
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Fan Jiang
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Qi-Sheng Peng
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Chao Liu
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Li-Ying Liu
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.)
| | - Shuang-Xi Wang
- From School of Pharmacy and School of Basic Medical Sciences, Xinxiang Medical University, China (P.L., Y.-L.Y., M.-L.Z., F.-R.Z., P.X., G.-R.W., S.-X.W.); The Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China (T.G., H.M., Y.C., F.J., S.-X.W.); Department of Pharmacology, School of Pharmacy, Central South University, Changsha, China (X.-Y.S., L.-Y.L.); The Key Laboratory for Zoonosis Research, Institute of Zoonosis, Jilin University, Changchun, China (Q.-S.P.); and Hubei Key Laboratory of Cardiovascular, Cerebrovascular, and Metabolic Disorders, Hubei University of Science and Technology, Xianning, China (C.L.).
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An H, Wei R, Ke J, Yang J, Liu Y, Wang X, Wang G, Hong T. Metformin attenuates fluctuating glucose-induced endothelial dysfunction through enhancing GTPCH1-mediated eNOS recoupling and inhibiting NADPH oxidase. J Diabetes Complications 2016; 30:1017-24. [PMID: 27217019 DOI: 10.1016/j.jdiacomp.2016.04.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 04/17/2016] [Accepted: 04/24/2016] [Indexed: 11/21/2022]
Abstract
AIMS The aim of this study was to investigate whether and how metformin ameliorated endothelial dysfunction induced by fluctuating glucose (FG) in human umbilical vein endothelial cells (HUVECs). METHODS HUVECs, which were exposed to FG to induce endothelial dysfunction, were incubated with nitric oxide synthase (NOS) inhibitor N-nitro-l-arginine-methyl ester (l-NAME), nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitor apocynin, metformin and/or adenosine monophosphate-activated protein kinase (AMPK) inhibitor compound C. The oxidative stress and endothelial NOS (eNOS) coupling were evaluated. RESULTS FG induced endothelial dysfunction as indicated by increased reactive oxygen species (ROS) generation and decreased nitric oxide (NO) production. Although FG increased eNOS phosphorylation, uncoupled eNOS was evidenced by downregulated guanosine 5'-triphosphate cyclohydrolase 1 (GTPCH1) and tetrahydrobiopterin (BH4) levels. FG also upregulated the level of p47-phox, a subunit of NADPH oxidase. Similar to l-NAME and apocynin, metformin ameliorated the FG-induced endothelial dysfunction by decreasing ROS generation. Furthermore, metformin recoupled eNOS through upregulating GTPCH1 and BH4 levels, and attenuated the upregulation of p47-phox in FG-treated HUVECs. Addition of compound C abolished the above effects of metformin. CONCLUSION Metformin improves the FG-induced endothelial dysfunction in HUVECs. The protective effect of metformin may be mediated through activation of GTPCH1-mediated eNOS recoupling and inhibition of NADPH oxidase via an AMPK-dependent pathway.
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Affiliation(s)
- Huijie An
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China; Department of Endocrinology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Rui Wei
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Jing Ke
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Jin Yang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Ye Liu
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China
| | - Xian Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science of Ministry of Education, Peking University Health Science Center, Beijing, China
| | - Guang Wang
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China; Department of Endocrinology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
| | - Tianpei Hong
- Department of Endocrinology and Metabolism, Peking University Third Hospital, Beijing, China.
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Xu BC, Long HB, Luo KQ. Tert-butylhydroquinone lowers blood pressure in AngII-induced hypertension in mice via proteasome-PTEN-Akt-eNOS pathway. Sci Rep 2016; 6:29589. [PMID: 27435826 PMCID: PMC4951646 DOI: 10.1038/srep29589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 06/22/2016] [Indexed: 12/30/2022] Open
Abstract
Tert-butylhydroquinone (tBHQ), as an antioxidant, has been widely used for many years to prevent oxidization of food products. The aim of this study was to investigate whether tBHQ activates endothelial nitric oxide synthase (eNOS) to prevent endothelial dysfunction and lower blood pressure. The role of Akt in tBHQ-induced eNOS phosphorylation was examined in human umbilical vein endothelial cells (HUVEC) or in mice. tBHQ treatment of HUVEC increased both Akt-Ser473 phosphorylation, accompanied with increased eNOS-Ser1177 phosphorylation and NO release. Mechanically, pharmacologic or genetic inhibition of Akt abolished tBHQ-enhanced NO release and eNOS phosphorylation in HUVEC. Gain-function of PTEN or inhibition of 26S proteasome abolished tBHQ-enhanced Akt phosphorylation in HUVEC. Ex vivo analysis indicated that tBHQ improved Ach-induced endothelium-dependent relaxation in LPC-treated mice aortic arteries, which were abolished by inhibition of Akt or eNOS. In animal study, administration of tBHQ significantly increased eNOS-Ser1177 phosphorylation and acetylcholine-induced vasorelaxation, and lowered AngII-induced hypertension in wildtype mice, but not in mice deficient of Akt or eNOS. In conclusion, tBHQ via proteasome-dependent degradation of PTEN increases Akt phosphorylation, resulting in upregulation of eNOS-derived NO production and consequent improvement of endothelial function in vivo. In this way, tBHQ lowers blood pressure in hypertensive mice.
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Affiliation(s)
- Bing-Can Xu
- Department of Emergency, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hui-Bao Long
- Department of Emergency, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Ke-Qin Luo
- Department of Emergency, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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46
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Hu M, Liu B. Resveratrol attenuates lipopolysaccharide-induced dysfunction of blood-brain barrier in endothelial cells via AMPK activation. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2016; 20:325-32. [PMID: 27382348 PMCID: PMC4930900 DOI: 10.4196/kjpp.2016.20.4.325] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 07/08/2015] [Accepted: 01/03/2016] [Indexed: 01/11/2023]
Abstract
Resveratrol, a phytoalexin, is reported to activate AMP-activated protein kinase (AMPK) in vascular cells. The blood-brain barrier (BBB), formed by specialized brain endothelial cells that are interconnected by tight junctions, strictly regulates paracellular permeability to maintain an optimal extracellular environment for brain homeostasis. The aim of this study was to elucidate the effects of resveratrol and the role of AMPK in BBB dysfunction induced by lipopolysaccharide (LPS). Exposure of human brain microvascular endothelial cells (HBMECs) to LPS (1 µg/ml) for 4 to 24 hours week dramatically increased the permeability of the BBB in parallel with lowered expression levels of occluding and claudin-5, which are essential to maintain tight junctions in HBMECs. In addition, LPS significantly increased the reactive oxygen species (ROS) productions. All effects induced by LPS in HBVMCs were reversed by adenoviral overexpression of superoxide dismutase, inhibition of NAD(P) H oxidase by apocynin or gain-function of AMPK by adenoviral overexpression of constitutively active mutant (AMPK-CA) or by resveratrol. Finally, upregulation of AMPK by either AMPK-CA or resveratrol abolished the levels of LPS-enhanced NAD(P)H oxidase subunits protein expressions. We conclude that AMPK activation by resveratrol improves the integrity of the BBB disrupted by LPS through suppressing the induction of NAD(P)H oxidase-derived ROS in HBMECs.
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Affiliation(s)
- Min Hu
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Bo Liu
- Deapartment of Orthopaedics, The Third Xiangya Hospital, Central South University, Changsha 410013, China
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Wei R, Ma S, Wang C, Ke J, Yang J, Li W, Liu Y, Hou W, Feng X, Wang G, Hong T. Exenatide exerts direct protective effects on endothelial cells through the AMPK/Akt/eNOS pathway in a GLP-1 receptor-dependent manner. Am J Physiol Endocrinol Metab 2016; 310:E947-57. [PMID: 27072494 DOI: 10.1152/ajpendo.00400.2015] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 04/12/2016] [Indexed: 01/30/2023]
Abstract
Glucagon-like peptide-1 (GLP-1) may have direct favorable effects on cardiovascular system. The aim of this study was to investigate the effects of the GLP-1 analog exenatide on improving coronary endothelial function in patients with type 2 diabetes and to investigate the underlying mechanisms. The newly diagnosed type 2 diabetic subjects were enrolled and given either lifestyle intervention or lifestyle intervention plus exenatide treatment. After 12-wk treatment, coronary flow velocity reserve (CFVR), an important indicator of coronary endothelial function, was improved significantly, and serum levels of soluble intercellular adhesion molecule-1 (sICAM-1) and soluble vascular cell adhesion molecule-1 (sVCAM-1) were remarkably decreased in the exenatide treatment group compared with the baseline and the control group. Notably, CFVR was correlated inversely with hemoglobin A1c (Hb A1c) and positively with high-density lipoprotein cholesterol (HDL-C). In human umbilical vein endothelial cells, exendin-4 (a form of exenatide) significantly increased NO production, endothelial NO synthase (eNOS) phosphorylation, and GTP cyclohydrolase 1 (GTPCH1) level in a dose-dependent manner. The GLP-1 receptor (GLP-1R) antagonist exendin (9-39) or GLP-1R siRNA, adenylyl cyclase inhibitor SQ-22536, AMPK inhibitor compound C, and PI3K inhibitor LY-294002 abolished the effects of exendin-4. Furthermore, exendin-4 reversed homocysteine-induced endothelial dysfunction by decreasing sICAM-1 and reactive oxygen species (ROS) levels and upregulating NO production and eNOS phosphorylation. Likewise, exendin (9-39) diminished the protective effects of exendin-4 on the homocysteine-induced endothelial dysfunction. In conclusion, exenatide significantly improves coronary endothelial function in patients with newly diagnosed type 2 diabetes. The effect may be mediated through activation of AMPK/PI3K-Akt/eNOS pathway via a GLP-1R/cAMP-dependent mechanism.
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Affiliation(s)
- Rui Wei
- Department of Endocrinology and Metabolism and
| | - Shifeng Ma
- Department of Endocrinology and Metabolism and
| | - Chen Wang
- Department of Endocrinology and Metabolism and
| | - Jing Ke
- Department of Endocrinology and Metabolism and
| | - Jin Yang
- Department of Endocrinology and Metabolism and
| | - Weihong Li
- Department of Cardiology, Peking University Third Hospital, Beijing, China
| | - Ye Liu
- Department of Endocrinology and Metabolism and
| | - Wenfang Hou
- Department of Endocrinology and Metabolism and
| | - Xinheng Feng
- Department of Cardiology, Peking University Third Hospital, Beijing, China
| | - Guang Wang
- Department of Endocrinology and Metabolism and
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Li H, He C, Wang J, Li X, Yang Z, Sun X, Fang L, Liu N. Berberine activates peroxisome proliferator-activated receptor gamma to increase atherosclerotic plaque stability in Apoe -/- mice with hyperhomocysteinemia. J Diabetes Investig 2016; 7:824-832. [PMID: 27181586 PMCID: PMC5089944 DOI: 10.1111/jdi.12516] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 02/19/2016] [Accepted: 03/04/2016] [Indexed: 11/30/2022] Open
Abstract
AIMS/INTRODUCTION An elevated level of plasma homocysteine has long been suspected as a metabolic risk factor for the development of atherosclerotic vascular diseases in diabetes. Berberine (BBR) has several preventive effects on cardiovascular diseases. The effects of BBR on atherosclerotic plaque stability increased by homocysteine thiolactone (HTL) remain unknown. MATERIALS AND METHODS The model of atherosclerotic vulnerable plaque was induced by placing a collar around the carotid artery in Apoe-/- mice. Endothelium-dependent relaxation was assayed by organ chamber. RESULTS Homocysteine thiolactone (50 mg/kg/day, 8 weeks) reduced the atherosclerotic plaque stability in the carotid artery of Apoe-/- mice, which was reversed by BBR administration (1.0 g/kg/day). In vivo and ex vivo experiments showed that HTL dramatically reduced acetylcholine-induced endothelium-dependent relaxation and superoxide dismutase activity, and increased malondialdehyde content, which were inhibited by BBR. Importantly, all effects induced by BBR were abolished by GW9662, an antagonist of peroxisome proliferator-activated receptor-γ. Incubation of cultured endothelial cells with HTL significantly reduced cell viabilities and enhanced production of reactive oxygen species. Pretreatment of cells with BBR dose-dependently reversed HTL-induced detrimental effects, which were GW9662-reversible. CONCLUSIONS Berberine increases atherosclerotic plaque stability in hyperhomocysteinemia mice, which is related to the activation of peroxisome proliferator-activated receptor-γ and subsequent suppression of oxidative stress in endothelial cells.
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Affiliation(s)
- Hongjun Li
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Chengyan He
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Jingying Wang
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Xiaoou Li
- Tumor Hospital of Jilin Province, The Second Hospital of Jilin University, Changchun, China
| | - Zhaowei Yang
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Xiaoying Sun
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Ling Fang
- China-Japan Union Hospital, Jilin University, Changchun, China
| | - Ning Liu
- Central Laboratory, The Second Hospital of Jilin University, Changchun, China.
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Inositol-Requiring Enzyme 1-Dependent Activation of AMPK Promotes Brucella abortus Intracellular Growth. J Bacteriol 2016; 198:986-93. [PMID: 26755628 DOI: 10.1128/jb.00868-15] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/05/2016] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED AMP-activated protein kinase (AMPK) is a serine/threonine kinase that is well conserved during evolution. AMPK activation inhibits production of reactive oxygen species (ROS) in cells via suppression of NADPH oxidase. However, the role of AMPK during the process of Brucella infection remains unknown. Our data demonstrate that B. abortus infection induces AMPK activation in HeLa cells in a time-dependent manner. The known AMPK kinases LKB1, CAMKKβ, and TAK1 are not required for the activation of AMPK by B. abortus infection. Instead, this activation is dependent on the RNase activity of inositol-requiring enzyme 1 (IRE1). Moreover, we also found that B. abortus infection-induced IRE1-dependent activation of AMPK promotes B. abortus intracellular growth with peritoneal macrophages via suppression of NADPH-derived ROS production. IMPORTANCE Previous studies showed that B. abortus infection does not promote any oxidative burst regulated by NADPH oxidase. However, the underlying mechanism remains elusive. We report for the first time that AMPK activation caused by B. abortus infection plays important role in NADPH oxidase-derived ROS production.
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50
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Liu Z, Li P, Zhao ZH, Zhang Y, Ma ZM, Wang SX. Vitamin B6 Prevents Endothelial Dysfunction, Insulin Resistance, and Hepatic Lipid Accumulation in Apoe (-/-) Mice Fed with High-Fat Diet. J Diabetes Res 2016; 2016:1748065. [PMID: 26881239 PMCID: PMC4735993 DOI: 10.1155/2016/1748065] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 10/08/2015] [Accepted: 10/21/2015] [Indexed: 12/22/2022] Open
Abstract
Backgrounds. VitB6 deficiency has been associated with a number of adverse health effects. However, the effects of VitB6 in metabolic syndrome are poorly understood. Methods. VitB6 (50 mg/kg/day) was given to Apoe (-/-) mice with hkdigh-fat diet (HFD) for 8 weeks. Endothelial dysfunction, insulin resistance, and hepatic lipid contents were determined. Results. VitB6 administration remarkably increased acetylcholine-induced endothelium-dependent relaxation and decreased random blood glucose level in Apoe (-/-) mice fed with HFD. In addition, VitB6 improved the tolerance of glucose and insulin, normalized the histopathology of liver, and reduced hepatic lipid accumulation but did not affect the liver functions. Clinical and biochemical analysis indicated that the levels of VitB6 were decreased in patients with fatty liver. Conclusions. Vitamin B6 prevents endothelial dysfunction, insulin resistance, and hepatic lipid accumulation in Apoe (-/-) mice fed with HFD. Supplementation of VitB6 should be considered to prevent metabolic syndrome.
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Affiliation(s)
- Zhan Liu
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Peng Li
- College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Zhi-Hong Zhao
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Yu Zhang
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Zhi-Min Ma
- Division of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215000, China
| | - Shuang-Xi Wang
- College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, School of Medicine, Shandong University, Jinan 250012, China
- *Shuang-Xi Wang:
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