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Musa balbisiana Fruit Rich in Polyphenols Attenuates Isoproterenol-Induced Cardiac Hypertrophy in Rats via Inhibition of Inflammation and Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7147498. [PMID: 32082481 PMCID: PMC7007945 DOI: 10.1155/2020/7147498] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/26/2019] [Indexed: 12/24/2022]
Abstract
Musa balbisiana Colla (Family: Musaceae), commonly known as banana and native to India and other parts of Asia, is very rich in nutritional value and has strong antioxidant potential. In the present study, we have developed Musa balbisiana (MB) fruit pulp powder and evaluated its cardioprotective effect in cardiac hypertrophy, which is often associated with inflammation and oxidative stress. An ultra-high-pressure liquid chromatography-mass spectrometer (UPLC-MS/MS) has been used for the detection and systematic characterization of the phenolic compounds present in Musa balbisiana fruit pulp. The cardioprotective effect of MB was evaluated in a rat model of isoproterenol- (ISO-) induced cardiac hypertrophy by subcutaneous administration of isoproterenol (5 mg/kg−1/day−1), delivered through an alzet minipump for 14 days. Oral administration of MB fruit pulp powder (200 mg/kg/day) significantly (p < 0.001) decreased heart weight/tail length ratio and cardiac hypertrophy markers like ANP, BNP, β-MHC, and collagen-1 gene expression. MB also attenuated ISO-induced cardiac inflammation and oxidative stress. The in vivo data were further confirmed in vitro in H9c2 cells where the antihypertrophic and anti-inflammatory effect of the aqueous extract of MB was observed in the presence of ISO and lipopolysaccharide (LPS), respectively. This study strongly suggests that supplementation of dried Musa balbisiana fruit powder can be useful for the prevention of cardiac hypertrophy via the inhibition of inflammation and oxidative stress.
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102
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Pharmacological intervention of histone deacetylase enzymes in the neurodegenerative disorders. Life Sci 2020; 243:117278. [PMID: 31926248 DOI: 10.1016/j.lfs.2020.117278] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/31/2019] [Accepted: 01/01/2020] [Indexed: 02/06/2023]
Abstract
Reversal of aging symptoms and related disorders are the challenging task where epigenetic is a crucial player that includes DNA methylation, histone modification; chromatin remodeling and regulation that are linked to the progression of various neurodegenerative disorders (NDDs). Overexpression of various histone deacetylase (HDACs) can activate Glycogen synthase kinase 3 which promotes the hyperphosphorylation of tau and inhibits its degradation. While HDAC is important for maintaining the neuronal morphology and brain homeostasis, at the same time, these enzymes are promoting neurodegeneration, if it is deregulated. Different experimental models have also confirmed the neuroprotective effects caused by HDAC enzymes through the regulation of neuronal apoptosis, inflammatory response, DNA damage, cell cycle regulation, and metabolic dysfunction. Apart from transcriptional regulation, protein-protein interaction, histone post-translational modifications, deacetylation mechanism of non-histone protein and direct association with disease proteins have been linked to neuronal imbalance. Histone deacetylases inhibitors (HDACi) can be able to alter gene expression and shown its efficacy on experimental models, and in clinical trials for NDD's and found to be a very promising therapeutic agent with certain limitation, for instance, non-specific target effect, isoform-selectivity, specificity, and limited number of predicted biomarkers. Herein, we discussed (i) the catalytic mechanism of the deacetylation process of various HDAC's in in vivo and in vitro experimental models, (ii) how HDACs are participating in neuroprotection as well as in neurodegeneration, (iii) a comprehensive role of HDACi in maintaining neuronal homeostasis and (iv) therapeutic role of biomolecules to modulate HDACs.
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103
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Wu Q, Chen X, He Q, Lang L, Xu P, Wang P, Lee SC. Resveratrol attenuates diabetes-associated cell centrosome amplification via inhibiting the PKCα-p38 to c-myc/c-jun pathway. Acta Biochim Biophys Sin (Shanghai) 2020; 52:72-83. [PMID: 31844893 DOI: 10.1093/abbs/gmz142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 09/06/2019] [Accepted: 11/11/2019] [Indexed: 02/07/2023] Open
Abstract
Type 2 diabetes increases the risk for cancer. Centrosome amplification can initiate tumorigenesis. We have described that type 2 diabetes increases the centrosome amplification of peripheral blood mononuclear cells, with high glucose, insulin, and palmitic acid as the triggers, which suggests that centrosome amplification is a candidate biological mechanism linking diabetes to cancer. In this study, we aimed to further investigate the signaling pathways of the diabetes-associated centrosome amplification and to examine whether and how resveratrol inhibits the centrosome amplification. The results showed that treatment with high glucose, insulin, and palmitic acid, alone or in combination, could increase the protein levels of phospho-protein kinase C alpha (p-PKCα), phospho-p38 mitogen-activated protein kinases (p-p38), c-myc, and c-jun, as well as the mRNA levels of c-myc and c-jun. PKCα inhibitor could inhibit the treatment-induced increase in the protein levels of p-p38, c-myc, and c-jun. Inhibitor or siRNA of p38 was also able to inhibit the treatment-induced increase in the levels of p-p38, c-myc, and c-jun. Meanwhile, knockdown of c-myc or c-jun did not alter the treatment-induced increase in the phosphorylation of PKCα or p38. Importantly, inhibition of the phosphorylation of PKCα or p38 and knockdown of c-myc or c-jun could attenuate the centrosome amplification. In diabetic mice, the levels of p-PKCα, p-p38, c-myc, and c-jun were all increased in the colon tissues. Interestingly, resveratrol, but not metformin, was able to attenuate the treatment-induced increase in the levels of p-PKCα, p-p38, c-myc, and c-jun, as well as the centrosome amplification. In conclusion, our results suggest that PKCα-p38 to c-myc/c-jun is the signaling pathway of the diabetes-associated centrosome amplification, and resveratrol attenuates the centrosome amplification by inhibiting this signaling pathway.
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Affiliation(s)
- Qigui Wu
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Xiaoyu Chen
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Qinju He
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Lang Lang
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Peng Xu
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Pu Wang
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
| | - Shao Chin Lee
- School of Life Sciences, Shanxi University, Taiyuan 030006, China, and
- School of Life Sciences, Jiangsu Normal University, Xuzhou 221116, China
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104
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Wang(a) J, Wang S, Wang(b) J, Xiao M, Guo Y, Tang Y, Zhang J, Gu J. Epigenetic Regulation Associated With Sirtuin 1 in Complications of Diabetes Mellitus. Front Endocrinol (Lausanne) 2020; 11:598012. [PMID: 33537003 PMCID: PMC7848207 DOI: 10.3389/fendo.2020.598012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 11/27/2020] [Indexed: 01/19/2023] Open
Abstract
Diabetes mellitus (DM) has been one of the largest health concerns of the 21st century due to the serious complications associated with the disease. Therefore, it is essential to investigate the pathogenesis of DM and develop novel strategies to reduce the burden of diabetic complications. Sirtuin 1 (SIRT1), a nicotinamide adenosine dinucleotide (NAD+)-dependent deacetylase, has been reported to not only deacetylate histones to modulate chromatin function but also deacetylate numerous transcription factors to regulate the expression of target genes, both positively and negatively. SIRT1 also plays a crucial role in regulating histone and DNA methylation through the recruitment of other nuclear enzymes to the chromatin. Furthermore, SIRT1 has been verified as a direct target of many microRNAs (miRNAs). Recently, numerous studies have explored the key roles of SIRT1 and other related epigenetic mechanisms in diabetic complications. Thus, this review aims to present a summary of the rapidly growing field of epigenetic regulatory mechanisms, as well as the epigenetic influence of SIRT1 on the development and progression of diabetic complications, including cardiomyopathy, nephropathy, and retinopathy.
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Affiliation(s)
- Jie Wang(a)
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shudong Wang
- Department of Cardiology at the First Hospital of Jilin University, Changchun, China
| | - Jie Wang(b)
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Mengjie Xiao
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yuanfang Guo
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yufeng Tang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Jingjing Zhang
- Department of Cardiology at the First Hospital of China Medical University, and Department of Cardiology at the People’s Hospital of Liaoning Province, Shenyang, China
| | - Junlian Gu
- School of Nursing, Cheeloo College of Medicine, Shandong University, Jinan, China
- *Correspondence: Junlian Gu,
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105
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Chen YM, Yu XJ, Liu KL, Gao HL, Li Y, Sun TZ, Shi XL, Li HB, Zhu GQ, Qi J, Kang YM. Inhibition of Hypothalamic Inhibitor κB Kinase β/Nuclear Transcription Factor κB Pathway Attenuates Metabolism and Cardiac Dysfunction in Type 2 Diabetic Rats. Neuroendocrinology 2020; 110:899-913. [PMID: 31671427 DOI: 10.1159/000504444] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/30/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Inflammation and oxidative stress play important roles in energy imbalance and its complications. Recent research indicates that hypothalamic inflammation may contribute to the pathogenesis of metabolic syndrome and cardiac dysfunction, but the mechanisms remain unclear. We hypothesized that suppression of the proinflammatory IKKβ/NF-κB pathway in the hypothalamus can improve energy balance and cardiac function in type 2 diabetic (T2D) rats. METHODS Normal and T2D rats received bilateral hypothalamic arcuate nucleus (ARC) infusions of the IKKβ inhibitor SC-514 or vehicle via osmotic minipump. Metabolic phenotyping, immunohistochemical analyses, and biochemical analyses were used to investigate the outcomes of inhibition of the hypothalamic IKKβ. Echocardiography and glucometer were used for measuring cardiac function and blood glucose, respectively. Blood samples were collected for the evaluation of circulating proinflammatory cytokines. Heart was harvested for cardiac morphology evaluations. The ARC was harvested and analyzed for IKKβ, NF-κB, proinflammatory cytokines, reactive oxygen species (ROS), and NAD(P)H (gp91phox, p47phox) oxidase activity levels and neuropeptides. RESULTS Compared with normal rats, T2D rats were characterized by hyperglycemia, hyperinsulinemia, glucose intolerance, cardiac dysfunction, as well as higher ARC levels of IKKβ, NF-κB, proinflammatory cytokines, ROS, gp91phox, and p47phox. ARC infusion of the IKKβ inhibitor SC-514 attenuated all these changes in T2D rats, but not in normal rats. CONCLUSIONS Our results indicate that the hypothalamic IKKβ/NF-κB pathway plays a key role in modulating energy imbalance and cardiac dysfunction, suggesting its potential therapeutic role during type 2 diabetes mellitus.
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Affiliation(s)
- Yan-Mei Chen
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Xiao-Jing Yu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Kai-Li Liu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Hong-Li Gao
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Ying Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Tian-Ze Sun
- Department of Human Anatomy and Histology and Embryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiao-Lian Shi
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Hong-Bao Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Guo-Qing Zhu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Jie Qi
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China,
| | - Yu-Ming Kang
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
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106
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Cheng CK, Luo JY, Lau CW, Chen ZY, Tian XY, Huang Y. Pharmacological basis and new insights of resveratrol action in the cardiovascular system. Br J Pharmacol 2019; 177:1258-1277. [PMID: 31347157 DOI: 10.1111/bph.14801] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 07/10/2019] [Accepted: 07/16/2019] [Indexed: 12/13/2022] Open
Abstract
Resveratrol (trans-3,4',5-trihydroxystilbene) belongs to the family of natural phytoalexins. Resveratrol first came to our attention in 1992, following reports of the cardioprotective effects of red wine. Thereafter, resveratrol was shown to exert antioxidant, anti-inflammatory, anti-proliferative, and angio-regulatory effects against atherosclerosis, ischaemia, and cardiomyopathy. This article critically reviews the current findings on the molecular basis of resveratrol-mediated cardiovascular benefits, summarizing the broad effects of resveratrol on longevity regulation, energy metabolism, stress resistance, exercise mimetics, circadian clock, and microbiota composition. In addition, this article also provides an update, both preclinically and clinically, on resveratrol-induced cardiovascular protection and discusses the adverse and inconsistent effects of resveratrol reported in both preclinical and clinical studies. Although resveratrol has been claimed as a master anti-aging agent against several age-associated diseases, further detailed mechanistic investigation is still required to thoroughly unravel the therapeutic value of resveratrol against cardiovascular diseases at different stages of disease development. LINKED ARTICLES: This article is part of a themed section on The Pharmacology of Nutraceuticals. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.6/issuetoc.
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Affiliation(s)
- Chak Kwong Cheng
- Heart and Vascular Institute, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Jiang-Yun Luo
- Heart and Vascular Institute, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Chi Wai Lau
- Heart and Vascular Institute, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Zhen-Yu Chen
- Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Xiao Yu Tian
- Heart and Vascular Institute, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Yu Huang
- Heart and Vascular Institute, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, SAR, China
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107
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Ma R, Wu Y, Zhai Y, Hu B, Ma W, Yang W, Yu Q, Chen Z, Workman JL, Yu X, Li S. Exogenous pyruvate represses histone gene expression and inhibits cancer cell proliferation via the NAMPT-NAD+-SIRT1 pathway. Nucleic Acids Res 2019; 47:11132-11150. [PMID: 31598701 PMCID: PMC6868375 DOI: 10.1093/nar/gkz864] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 09/21/2019] [Accepted: 10/01/2019] [Indexed: 12/31/2022] Open
Abstract
Pyruvate is a glycolytic metabolite used for energy production and macromolecule biosynthesis. However, little is known about its functions in tumorigenesis. Here, we report that exogenous pyruvate inhibits the proliferation of different types of cancer cells. This inhibitory effect of pyruvate on cell growth is primarily attributed to its function as a signal molecule to repress histone gene expression, which leads to less compact chromatin and misregulation of genome-wide gene expression. Pyruvate represses histone gene expression by inducing the expression of NAD+ biosynthesis enzyme, nicotinamide phosphoribosyltransferase (NAMPT) via myocyte enhancer factor 2C (MEF2C), which then increases NAD+ levels and activates the histone deacetylase activity of SIRT1. Chromatin immunoprecipitation analysis indicates that pyruvate enhances SIRT1 binding at histone gene promoters where it reduces histone acetylation. Although pyruvate delays cell entry into S phase, pyruvate represses histone gene expression independent of cell cycle progression. Moreover, we find that administration of pyruvate reduces histone expression and retards tumor growth in xenograft mice without significant side effects. Using tissues from cervical and lung cancer patients, we find intracellular pyruvate concentrations inversely correlate with histone protein levels. Together, we uncover a previously unknown function of pyruvate in regulating histone gene expression and cancer cell proliferation.
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Affiliation(s)
- Rui Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Yinsheng Wu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Yansheng Zhai
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Bicheng Hu
- The Central Laboratory, Wuhan No.1 Hospital, Wuhan, Hubei 430022, China
| | - Wei Ma
- The Central Laboratory, Wuhan No.1 Hospital, Wuhan, Hubei 430022, China
| | - Wenqiang Yang
- The Central Laboratory, Wuhan No.1 Hospital, Wuhan, Hubei 430022, China
| | - Qi Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Zhen Chen
- Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430079, China
| | - Jerry L Workman
- Stowers Institute for Medical Research, 1000 E. 50th Street, Kansas City, MO 64110, USA
| | - Xilan Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
| | - Shanshan Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, Hubei 430062, China
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108
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Dihydroartemisinin Protects against Dextran Sulfate Sodium-Induced Colitis in Mice through Inhibiting the PI3K/AKT and NF- κB Signaling Pathways. BIOMED RESEARCH INTERNATIONAL 2019; 2019:1415809. [PMID: 31781591 PMCID: PMC6875009 DOI: 10.1155/2019/1415809] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/17/2019] [Accepted: 09/17/2019] [Indexed: 01/08/2023]
Abstract
Ulcerative colitis is a common inflammatory bowel disease, and the activation of thePI3K/AKT and NF-κB signaling pathways plays a pivotal role in its pathogenesis. Dihydroartemisinin (DHA) is a widely used antimalarial drug and has shown anticancer effect partially through inhibiting the activation of PI3K/AKT and NF-κB. This study aimed to investigate the effect of dihydroartemisinin on ulcerative colitis and its mechanism. Adult male C57 mice were subjected to 3.0% dextran sulfate sodium (DSS) for seven days; simultaneously, dihydroartemisinin or control saline was administered by oral gavage once a day. In vitro, the intestinal epithelial cell-6 was treated with LPS for 24 hours with or without dihydroartemisinin combined with PI3K/Akt activator 740 Y-P or NF-κB activator phorbol myristate acetate. Western blotting was used to test the activation of PI3K/AKT and NF-κB. Dihydroartemisinin significantly ameliorated body weight loss, shortened colon length, and increased DAI in DSS-induced colitis. Meanwhile, histological damage was improved and was accompanied by decreased expression and secretion of proinflammatory cytokines. Moreover, DSS-induced elevation of phosphorylation of PI3K, AKT, IKKα, IκBα, and NF-κB (p65) was remarkably blunted by dihydroartemisinin both in vivo and in vitro, indicating an inhibitive property on the PI3K/AKT and NF-κB signaling pathways. Furthermore, administration of 740 Y-P or PMA significantly blocked protective activity of dihydroartemisinin against colitis in vitro. In conclusion, dihydroartemisinin can attenuate DSS-induced colitis, and its anticolitis effect might be mediated via the PI3K/AKT and NF-κB signaling pathways. DHA might serve as a promising drug for patients with ulcerative colitis.
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109
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Xu B, Lang LM, Lian S, Guo JR, Wang JF, Liu J, Yang HM, Li SZ. Neuroinflammation induced by secretion of acetylated HMGB1 from activated microglia in hippocampi of mice following chronic cold exposure. Brain Res 2019; 1726:146495. [PMID: 31586627 DOI: 10.1016/j.brainres.2019.146495] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/12/2019] [Accepted: 10/02/2019] [Indexed: 12/21/2022]
Abstract
Stress is a nonspecific response to adverse circumstances and chronic stress can destroy homeostasis, leading to various primary diseases. Although chronic cold stress is becoming increasingly important for individuals living or working in extreme environments, the risk of associated disorders of the central nervous system remains unstudied. Here, male C57BL/6 mice were exposed to a temperature of 4 °C, for three hours each day for one, two or three weeks. Glial cell activation, neuronal structure, and neuroinflammation were then evaluated by western blotting, immunofluorescence, Nissl staining and co-immunoprecipitation. Microglial activation, accompanied by activation of the NF-κB signaling pathway, release of pro-inflammatory cytokines and loss of Nissl bodies, was observed in mouse hippocampal tissue following cold exposure. We speculate that these phenomena are mediated by the HMGB1/TLR4/NF-κB pathway and closely associated with acetylation of HMGB1 in the hippocampus. These findings provide new insights into the mechanisms of the cold stress response, which should inform the development of new strategies to combat the effects of hypothermia.
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Affiliation(s)
- Bin Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Li-Min Lang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Shuai Lian
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Jing-Ru Guo
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Jian-Fa Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Juxiong Liu
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Huan-Min Yang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
| | - Shi-Ze Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
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Resveratrol Reverses Thioacetamide-Induced Renal Assault with respect to Oxidative Stress, Renal Function, DNA Damage, and Cytokine Release in Wistar Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1702959. [PMID: 31583036 PMCID: PMC6754927 DOI: 10.1155/2019/1702959] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/30/2019] [Accepted: 08/10/2019] [Indexed: 12/19/2022]
Abstract
Background Thioacetamide (TAA), a class 2B-type carcinogen, is a potent toxicant. Toxicities caused by this compound in various tissues due to oxidative stress, increase of proinflammatory markers, and apoptosis have been reported; however, reports on kidney toxicity are negligible. Resveratrol (RSV), on the other hand, has demonstrated antioxidant and anti-inflammatory effects in different cases. Resveratrol's protective effects against TAA kidney toxicity were investigated in four rat groups. Methodology Four groups of rats were studied as follows (n = 8): control group, where rats were fed normal diet and water; TAA group, where rats received 0.3% TAA in water for two weeks; RSV group, where rats received 10 mg/kg body weight (bw) of RSV as oral suspension for two weeks; and treated group, where rats orally received 10 mg/kg bw RSV and simultaneously received 0.3% TAA for two weeks. Kidney homogenates from all groups were analyzed for cytokine release (IL-4, TNF-α, and IFN-γ) and oxidative stress (lipid peroxidation, catalase, and 8-OHdG). The serum of rats was analyzed for the quantification of renal function markers (blood urea nitrogen (BUN), creatinine, and creatine kinase). Result A significant increase in the renal function markers (BUN, 240%; creatinine, 187%; and creatine kinase, 117%), oxidative stress parameters (lipid peroxidation, 192% increase; catalase, 30.5% decrease), cytokines (IL-4, 120%; TNF-α, 129%; and IFN-γ, 133%), and DNA damage was observed in the TAA-treated group. All changes were significantly reversed in the group treated with RSV and TAA (P < 0.05) in combination, with no significant difference compared to the control group. Conclusion We conclude that resveratrol shows protection against TAA toxicity in rat kidney with respect to DNA damage, oxidative stress, renal function and cytokine release.
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111
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Hoseini A, Namazi G, Farrokhian A, Reiner Ž, Aghadavod E, Bahmani F, Asemi Z. The effects of resveratrol on metabolic status in patients with type 2 diabetes mellitus and coronary heart disease. Food Funct 2019; 10:6042-6051. [PMID: 31486447 DOI: 10.1039/c9fo01075k] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This study was performed to investigate the effects of resveratrol on metabolic status in patients with type 2 diabetes mellitus (T2DM) and coronary heart disease (CHD). This randomized, double-blind, placebo-controlled trial was performed with 56 patients having T2DM and CHD. The patients were randomly divided into two groups to receive either 500 mg resveratrol per day (n = 28) or placebo (n = 28) for 4 weeks. Resveratrol reduced fasting glucose (β-10.04 mg dL-1; 95% CI, -18.23, -1.86; P = 0.01), insulin (β-1.09 μIU mL-1; 95% CI, -1.93, -0.24; P = 0.01) and insulin resistance (β-0.48; 95% CI, -0.76, -0.21; P = 0.001) and significantly increased insulin sensitivity (β 0.006; 95% CI, 0.001, 0.01; P = 0.02) when compared with the placebo. Resveratrol also significantly increased HDL-cholesterol levels (β 3.38 mg dL-1; 95% CI, 1.72, 5.05; P < 0.001) and significantly decreased the total-/HDL-cholesterol ratio (β-0.36; 95% CI, -0.59, -0.13; P = 0.002) when compared with the placebo. Additionally, resveratrol caused a significant increase in total antioxidant capacity (TAC) (β 58.88 mmol L-1; 95% CI, 17.33, 100.44; P = 0.006) and a significant reduction in malondialdehyde (MDA) levels (β-0.21 μmol L-1; 95% CI, -0.41, -0.005; P = 0.04) when compared with the placebo. Resveratrol upregulated PPAR-γ (P = 0.01) and sirtuin 1 (SIRT1) (P = 0.01) in the peripheral blood mononuclear cells (PBMCs) of T2DM patients with CHD. Resveratrol supplementation did not have any effect on inflammatory markers. Four-week supplementation of resveratrol in patients with T2DM and CHD had beneficial effects on glycemic control, HDL-cholesterol levels, the total-/HDL-cholesterol ratio, TAC and MDA levels. Resveratrol also upregulated PPAR-γ and SIRT1 in the PBMCs of T2DM patients with CHD.
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Affiliation(s)
- Asma Hoseini
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Gholamreza Namazi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Alireza Farrokhian
- Department of Cardiology, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Željko Reiner
- Department of Internal Medicine, University Hospital Centre Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Esmat Aghadavod
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Fereshteh Bahmani
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
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112
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Gerardi G, Cavia-Saiz M, Rivero-Pérez MD, González-SanJosé ML, Muñiz P. Modulation of Akt-p38-MAPK/Nrf2/SIRT1 and NF-κB pathways by wine pomace product in hyperglycemic endothelial cell line. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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113
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Cortisol Excess-Mediated Mitochondrial Damage Induced Hippocampal Neuronal Apoptosis in Mice Following Cold Exposure. Cells 2019; 8:cells8060612. [PMID: 31216749 PMCID: PMC6627841 DOI: 10.3390/cells8060612] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/31/2019] [Accepted: 06/14/2019] [Indexed: 12/20/2022] Open
Abstract
Cold stress can induce neuronal apoptosis in the hippocampus, but the internal mechanism involving neuronal loss induced by cold stress is not clear. In vivo, male and female C57BL/6 mice were exposed to 4 °C, 3 h per day for 1 week. In vitro, HT22 cells were treated with different concentrations of cortisol (CORT) for 3 h. In vivo, CORT levels in the hippocampus were measured using ELISA, western blotting, and immunohistochemistry to assess the neuronal population and oxidation of the hippocampus. In vitro, western blotting, immunofluorescence, flow cytometry, transmission electron microscopy, and other methods were used to characterize the mechanism of mitochondrial damage induced by CORT. The phenomena of excessive CORT-mediated oxidation stress and neuronal apoptosis were shown in mouse hippocampus tissue following cold exposure, involving mitochondrial oxidative stress and endogenous apoptotic pathway activation. These processes were mediated by acetylation of lysine 9 of histone 3, resulting in upregulation involving Adenosine 5'-monophosphate (AMP)-activated protein kinase (APMK) phosphorylation and translocation of Nrf2 to the nucleus. In addition, oxidation in male mice was more severe. These findings provide a new understanding of the underlying mechanisms of the cold stress response and explain the apoptosis process induced by CORT, which may influence the selection of animal models in future stress-related studies.
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Flavin Oxidase-Induced ROS Generation Modulates PKC Biphasic Effect of Resveratrol on Endothelial Cell Survival. Biomolecules 2019; 9:biom9060209. [PMID: 31151226 PMCID: PMC6628153 DOI: 10.3390/biom9060209] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 05/22/2019] [Accepted: 05/25/2019] [Indexed: 12/26/2022] Open
Abstract
Background: Dietary intake of natural antioxidants is thought to impart protection against oxidative-associated cardiovascular diseases. Despite many in vivo studies and clinical trials, this issue has not been conclusively resolved. Resveratrol (RES) is one of the most extensively studied dietary polyphenolic antioxidants. Paradoxically, we have previously demonstrated that high RES concentrations exert a pro-oxidant effect eventually elevating ROS levels leading to cell death. Here, we further elucidate the molecular determinants underpinning RES-induced oxidative cell death. Methods: Using human umbilical vein endothelial cells (HUVECs), the effect of increasing concentrations of RES on DNA synthesis and apoptosis was studied. In addition, mRNA and protein levels of cell survival or apoptosis genes, as well as protein kinase C (PKC) activity were determined. Results: While high concentrations of RES reduce PKC activity, inhibit DNA synthesis and induce apoptosis, low RES concentrations elicit an opposite effect. This biphasic concentration-dependent effect (BCDE) of RES on PKC activity is mirrored at the molecular level. Indeed, high RES concentrations upregulate the proapoptotic Bax, while downregulating the antiapoptotic Bcl-2, at both mRNA and protein levels. Similarly, high RES concentrations downregulate the cell cycle progression genes, c-myc, ornithine decarboxylase (ODC) and cyclin D1 protein levels, while low RES concentrations display an increasing trend. The BCDE of RES on PKC activity is abrogated by the ROS scavenger Tempol, indicating that this enzyme acts downstream of the RES-elicited ROS signaling. The RES-induced BCDE on HUVEC cell cycle machinery was also blunted by the flavin inhibitor diphenyleneiodonium (DPI), implicating flavin oxidase-generated ROS as the mechanistic link in the cellular response to different RES concentrations. Finally, PKC inhibition abrogates the BCDE elicited by RES on both cell cycle progression and pro-apoptotic gene expression in HUVECs, mechanistically implicating PKC in the cellular response to different RES concentrations. Conclusions: Our results provide new molecular insight into the impact of RES on endothelial function/dysfunction, further confirming that obtaining an optimal benefit of RES is concentration-dependent. Importantly, the BCDE of RES could explain why other studies failed to establish the cardio-protective effects mediated by natural antioxidants, thus providing a guide for future investigation looking at cardio-protection by natural antioxidants.
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Cao M, Zhang W, Li J, Zhang J, Li L, Liu M, Yin W, Bai X. Inhibition of SIRT1 by microRNA-9, the key point in process of LPS-induced severe inflammation. Arch Biochem Biophys 2019; 666:148-155. [PMID: 30552873 PMCID: PMC7094484 DOI: 10.1016/j.abb.2018.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 02/08/2023]
Abstract
Severe inflammation may lead to multiple organs dysfunction syndrome, which has a high mortality. MicroRNA is found participated in this process. In this study we developed a lipopolysaccharide-induced inflammation cell model on macrophages and a lipopolysaccharide-induced inflammation mouse model. It was found that during inflammation, microRNA-9 was increased, accompanied with the up-regulation of pro-inflammatory cytokines and anti-inflammatory cytokines. Down-regulation of microRNA-9 inhibited the up-regulation of inflammatory cytokines, promoted the up-regulation of anti-inflammatory cytokines and induced the remission of organ damage, showing a protective effect in inflammation. Bioinformatics analysis combined with luciferase reporter assay showed that SIRT1 was the target gene of microRNA-9. Transfection of microRNA-9 inhibitor could increase the level of SIRT1 and decrease the activation of NF-κB pathway in macrophages. Myeloid specific sirt1 knockout mice were included and we found that lack of SIRT1 in mice macrophages led to aggravated inflammation, cell apoptosis and organ injury, and eliminated the protective property of microRNA-9 inhibitor. In conclusion, we demonstrated that inhibition of microRNA-9 could alleviate inflammation through the up-regulation of SIRT1 and then suppressed the activation of NF-κB pathway. This is a meaningful explore about the specific mechanism of microRNA-9 in inflammation.
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Affiliation(s)
- Mengyuan Cao
- Department of Emergency, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Wanfu Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Junjie Li
- Department of Emergency, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Julei Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Lincheng Li
- Cadet Brigade, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Mingchuan Liu
- Cadet Brigade, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China
| | - Wen Yin
- Department of Emergency, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China.
| | - Xiaozhi Bai
- Department of Burns and Cutaneous Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, China.
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Activation of liver x receptors prevents the spinal LTP induced by skin/muscle retraction in the thigh via SIRT1/NF-Κb pathway. Neurochem Int 2019; 128:106-114. [PMID: 31018150 DOI: 10.1016/j.neuint.2019.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 01/31/2023]
Abstract
It has been reported that skin/muscle incision and retraction (SMIR) in the thigh, produces mechanical allodynia in the hind paw, far from the site of incision/retraction. The mechanical allodynia lasts about 22 days, indicating chronic post-operative pain develops. The precise mechanisms, however, are largely unclear. In the current study, we further found that SMIR surgery induced LTP of c-fiber evoked field potentials that lasted at least 4 h. The mRNA and protein level of tumor necrosis factor-alpha (TNFα) and acetylated nuclear factor-kappaB p65 (ac-NF-κB p65) in the lumbar spinal dorsal horn was gradually increased during LTP development, while pretreatment with either TNFα neutralization antibody or NF-κB inhibitor PDTC completely prevented the induction of LTP. Moreover, the expression of Silent information regulator 1 (SIRT1) in the lumbar spinal dorsal horn was decreased and activation of SIRT1 by SRT1720 also prevented the induction of LTP. Importantly, the spinal expression of Liver X receptors (LXRs) was increased, both at mRNA and protein level following SMIR. Application of LXRs agonist T0901317 to the spinal dorsal horn prevented LTP induction following SMIR. Mechanistically, T0901317 enhanced the expression of SIRT1 and decreased the expression of ac-NF-κB p65 and TNFα. Spinal application of SIRT1 antagonist EX-527, 30 min before T0901317 administration, completely blocked the inhibiting effect of T0901317 on LTP, and on expression of ac-NF-κB p65 and TNFα. These results indicated that activation of LXRs prevented SMIR-induced LTP by inhibiting NF-κB/TNFα pathway via increasing SIRT1 expression.
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117
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Rossino MG, Casini G. Nutraceuticals for the Treatment of Diabetic Retinopathy. Nutrients 2019; 11:nu11040771. [PMID: 30987058 PMCID: PMC6520779 DOI: 10.3390/nu11040771] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/19/2019] [Accepted: 03/28/2019] [Indexed: 02/07/2023] Open
Abstract
Diabetic retinopathy (DR) is one of the most common complications of diabetes mellitus and is characterized by degeneration of retinal neurons and neoangiogenesis, causing a severe threat to vision. Nowadays, the principal treatment options for DR are laser photocoagulation, vitreoretinal surgery, or intravitreal injection of drugs targeting vascular endothelial growth factor. However, these treatments only act at advanced stages of DR, have short term efficacy, and cause side effects. Treatment with nutraceuticals (foods providing medical or health benefits) at early stages of DR may represent a reasonable alternative to act upstream of the disease, preventing its progression. In particular, in vitro and in vivo studies have revealed that a variety of nutraceuticals have significant antioxidant and anti-inflammatory properties that may inhibit the early diabetes-driven molecular mechanisms that induce DR, reducing both the neural and vascular damage typical of DR. Although most studies are limited to animal models and there is the problem of low bioavailability for many nutraceuticals, the use of these compounds may represent a natural alternative method to standard DR treatments.
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Affiliation(s)
| | - Giovanni Casini
- Department of Biology, University of Pisa, via San Zeno 31, 56127 Pisa, Italy.
- Interdepartmental Research Center Nutrafood "Nutraceuticals and Food for Health", University of Pisa, 56124 Pisa, Italy.
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Mohseni Zadeh N, Najafipour H, Azarbayjani MA, Matin Homaee H, Keshtkar AA. Regular Aerobic Exercise and Vitamin D3 Supplementation-Reduced Anthropometric Measures and the Hydrogen Peroxide-Induced Expression of TNF-α in Rats. INTERNATIONAL JOURNAL OF BASIC SCIENCE IN MEDICINE 2019. [DOI: 10.15171/ijbsm.2019.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introduction: Inflammation, oxidative stress (OS), and obesity are documented to play key roles in the pathogenesis of cardiovascular diseases (CVDs). Accordingly, tumor necrosis factor-α (TNF-α) and hydrogen peroxide (H2 O2 ), as a main innate immunity pro-inflammatory cytokine and a main free radical, respectively, are the main risk factors for CVDs. The present study aimed to evaluate the effects of OS, regular aerobic exercise (RAE), and vitamin D3 (VD3) on the expression of TNF-α in the myocardial cells in a rat model. Methods: In this experimental study, 48 male Wistar rats were divided into 8 groups (6 in each group) including healthy controls, sham (injected with dimethyl sulfoxide [DMSO] + saline), H2 O2 (either 1 or 2 mmol/kg), H2 O2 (1 mmol/kg) + VD3, H2 O2 (2 mmol/kg) + VD3, H2O2 (1 mmol/kg) + RAE, and H2 O2 (2 mmol/kg) + RAE. TNF-α level of myocardial cells was evaluated after 8 weeks using the ELISA technique. Results: The results of the study demonstrated that exposure to 2 mmol/kg of H2 O2 significantly increased TNF-α level of myocardial cells compared to the rats which were exposed to one mmol/ kg H2 O2 (P=0.039). Furthermore, RAE (P=0.040), and the combination of RAE+VD3 (P=0.049) significantly reduced the expression of myocardial TNF-α. Conclusion: In general, VD3 and RAE were found to suppress TNF-α expression induced by H2 O2 in the rat myocardium. Therefore, they can be considered as potential therapeutic interventions for reducing OS-induced inflammation in the damaged myocardial cells.
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Affiliation(s)
- Naemeh Mohseni Zadeh
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Hamid Najafipour
- Physiology Research Center and Department of Physiology, School of Medical, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Ali Azarbayjani
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Hasan Matin Homaee
- Department of Exercise Physiology, School of Physical Education and Sport Sciences, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Abbas Ali Keshtkar
- Department of Health Science Educational Development, School of Public Health, Tehran University of Epidemiology, Biostatistics, Tehran, Iran
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Bartekova M, Radosinska J, Jelemensky M, Dhalla NS. Role of cytokines and inflammation in heart function during health and disease. Heart Fail Rev 2019; 23:733-758. [PMID: 29862462 DOI: 10.1007/s10741-018-9716-x] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
By virtue of their actions on NF-κB, an inflammatory nuclear transcription factor, various cytokines have been documented to play important regulatory roles in determining cardiac function under both physiological and pathophysiological conditions. Several cytokines including TNF-α, TGF-β, and different interleukins such as IL-1 IL-4, IL-6, IL-8, and IL-18 are involved in the development of various inflammatory cardiac pathologies, namely ischemic heart disease, myocardial infarction, heart failure, and cardiomyopathies. In ischemia-related pathologies, most of the cytokines are released into the circulation and serve as biological markers of inflammation. Furthermore, there is an evidence of their direct role in the pathogenesis of ischemic injury, suggesting cytokines as potential targets for the development of some anti-ischemic therapies. On the other hand, certain cytokines such as IL-2, IL-4, IL-6, IL-8, and IL-10 are involved in the post-ischemic tissue repair and thus are considered to exert beneficial effects on cardiac function. Conflicting reports regarding the role of some cytokines in inducing cardiac dysfunction in heart failure and different types of cardiomyopathies seem to be due to differences in the nature, duration, and degree of heart disease as well as the concentrations of some cytokines in the circulation. In spite of extensive research work in this field of investigation, no satisfactory anti-cytokine therapy for improving cardiac function in any type of heart disease is available in the literature.
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Affiliation(s)
- Monika Bartekova
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovak Republic.,Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Jana Radosinska
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovak Republic.,Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Marek Jelemensky
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Naranjan S Dhalla
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Center, 351 Tache Avenue, Winnipeg, MB, R2H 2A6, Canada. .,Department of Physiology and Pathophysiology, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada.
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120
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Chen K, Rekep M, Wei W, Wu Q, Xue Q, Li S, Tian J, Yi Q, Zhang G, Zhang G, Xiao Q, Luo J, Liu Y. Quercetin Prevents In Vivo and In Vitro Myocardial Hypertrophy Through the Proteasome-GSK-3 Pathway. Cardiovasc Drugs Ther 2019; 32:5-21. [PMID: 29435775 DOI: 10.1007/s10557-018-6771-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE Quercetin, a flavonoid, has been reported to ameliorate cardiovascular diseases, such as cardiac hypertrophy. However, the mechanism is not completely understood. In this study, a mechanism related to proteasome-glycogen synthesis kinase 3 (GSK-3) was elucidated in rats and primary neonatal cardiomyocytes. METHODS Rats were subjected to sham or constriction of abdominal aorta surgery groups and treated with or without quercetin for 8 weeks. Angiotensin II (Ang II)-induced primary cardiomyocytes were cultured with quercetin treatment or not for 48 h. Echocardiography, real-time RT-PCR, histology, immunofluorescence, and Western blotting were conducted. Proteasome activities were also detected using a fluorescent peptide substrate. RESULTS Echocardiography showed that quercetin prevented constriction of abdominal aorta-induced cardiac hypertrophy and improved the cardiac diastolic function. In addition, quercetin also significantly reduced the Ang II-induced hypertrophic surface area and atrial natriuretic factor (ANF) mRNA level in primary cardiomyocytes. Proteasome activities were obviously inhibited in the quercetin-treated group both in vivo and in vitro. Quercetin also decreased the levels of proteasome subunit beta type (PSMB) 1, PSMB2, and PSMB5 of the 20S proteasome as well as the levels of proteasome regulatory particle (Rpt) 1 and Rpt4 of the 19S proteasome. In particular, the PSMB5 level in the nucleus was reduced after quercetin treatment. Furthermore, phosphorylated GSK-3α/β (inactivation of GSK-3) was decreased, which means that GSK-3 activity was increased. The phosphorylation levels of upstream AKT (PKB (protein kinase B)) and liver kinase B1/AMP activated protein kinase (LKB1/AMPKα) and those of downstream extracellular signal-regulated kinase (ERK), histone H3, β-catenin, and GATA binding protein 4 (GATA4) were reduced after quercetin treatment, while hypertrophy was reversed after treatment with the GSK-3 inhibitor. CONCLUSION In summary, quercetin prevents cardiac hypertrophy, which is related to proteasome inhibition and activation of GSK-3α/β. Upstream (AKT, LKB1/AMPKα) and downstream hypertrophic factors, such as ERK, histone H3, β-catenin, and GATA4, may also be involved.
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MESH Headings
- Animals
- Cells, Cultured
- Disease Models, Animal
- Glycogen Synthase Kinase 3/metabolism
- Glycogen Synthase Kinase 3 beta/metabolism
- Hypertrophy, Left Ventricular/enzymology
- Hypertrophy, Left Ventricular/pathology
- Hypertrophy, Left Ventricular/physiopathology
- Hypertrophy, Left Ventricular/prevention & control
- Male
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/enzymology
- Myocytes, Cardiac/pathology
- Phosphorylation
- Proteasome Endopeptidase Complex/drug effects
- Proteasome Endopeptidase Complex/metabolism
- Proteasome Inhibitors/pharmacology
- Quercetin/pharmacology
- Rats, Sprague-Dawley
- Signal Transduction/drug effects
- Ventricular Function, Left/drug effects
- Ventricular Remodeling/drug effects
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Affiliation(s)
- Kuixiang Chen
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
- Medical College of Jiaying University, Meizhou, 514031, China
| | - Mubarak Rekep
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Wei Wei
- Key Laboratory of State Administration of Traditional Chinese Medicine of China, Department of Pathophysiology, School of Medicine, Institute of Brain Research, Jinan University, Guangzhou, 510632, China
| | - Qian Wu
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Qin Xue
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Sujuan Li
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jiahui Tian
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Quan Yi
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Genshui Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Guiping Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Qing Xiao
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jiandong Luo
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yinghua Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, Guangzhou Medical University, Key Laboratory of Molecular Clinical Pharmacology and Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China.
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Abstract
Significance: Diabetic cardiomyopathy (DCM) is a frequent complication occurring even in well-controlled asymptomatic diabetic patients, and it may advance to heart failure (HF). Recent Advances: The diabetic heart is characterized by a state of "metabolic rigidity" involving enhanced rates of fatty acid uptake and mitochondrial oxidation as the predominant energy source, and it exhibits mitochondrial electron transport chain defects. These alterations promote redox state changes evidenced by a decreased NAD+/NADH ratio associated with an increase in acetyl-CoA/CoA ratio. NAD+ is a co-substrate for deacetylases, sirtuins, and a critical molecule in metabolism and redox signaling; whereas acetyl-CoA promotes protein lysine acetylation, affecting mitochondrial integrity and causing epigenetic changes. Critical Issues: DCM lacks specific therapies with treatment only in later disease stages using standard, palliative HF interventions. Traditional therapy targeting neurohormonal signaling and hemodynamics failed to improve mortality rates. Though mitochondrial redox state changes occur in the heart with obesity and diabetes, how the mitochondrial NAD+/NADH redox couple connects the remodeled energy metabolism with mitochondrial and cytosolic antioxidant defense and nuclear epigenetic changes remains to be determined. Mitochondrial therapies targeting the mitochondrial NAD+/NADH redox ratio may alleviate cardiac dysfunction. Future Directions: Specific therapies must be supported by an optimal understanding of changes in mitochondrial redox state and how it influences other cellular compartments; this field has begun to surface as a therapeutic target for the diabetic heart. We propose an approach based on an alternate mitochondrial electron transport that normalizes the mitochondrial redox state and improves cardiac function in diabetes.
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Affiliation(s)
- Jessica M Berthiaume
- 1 Department of Physiology & Biophysics, School of Medicine, Case Western Reserve University , Cleveland, Ohio
| | - Jacob G Kurdys
- 2 Department of Foundational Sciences, College of Medicine, Central Michigan University , Mount Pleasant, Michigan
| | - Danina M Muntean
- 3 Department of Functional Sciences-Pathophysiology, "Victor Babes" University of Medicine and Pharmacy , Timisoara, Romania
| | - Mariana G Rosca
- 2 Department of Foundational Sciences, College of Medicine, Central Michigan University , Mount Pleasant, Michigan
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Feng L, Ren J, Li Y, Yang G, Kang L, Zhang S, Ma C, Li J, Liu J, Yang L, Qi Z. Resveratrol protects against isoproterenol induced myocardial infarction in rats through VEGF-B/AMPK/eNOS/NO signalling pathway. Free Radic Res 2019; 53:82-93. [PMID: 30526144 DOI: 10.1080/10715762.2018.1554901] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
According to our previous results, resveratrol (RSV, 3, 5, 4-trihydroxystilbene), a naturally polyphenolic phytoalexin, could attenuate myocardial ischemia/reperfusion injury through up-regulation of vascular endothelial growth factor B (VEGF-B) in isolated rat heart or H9c2 cells. However, the molecular mechanism remains unclear. In this study, we investigated the protective effect of RSV on myocardial infarction (MI) in rats and further explored the underlying signal pathway after VEGF-B. Rats received RSV or normal saline by intragastric administration for 7 consecutive days and followed by subcutaneously isoproterenol (ISO) or normal saline injections for another 2 days. We found that RSV pretreatment prevented the unfavourable changes in HW/BW, HW/TL, infarct size, and cell apoptosis in ISO-treated rats. Moreover, superoxide and malondialdehyde (MDA) production were significantly reduced and superoxide dismutase (SOD) was increased by RSV in ISO-treated rats. Furthermore, it showed that RSV pretreatment increased VEGF-B, p-eNOS and p-AMPK expression, and NO production in ISO-treated rats. Using Neonatal Rat Ventricular Myocytes (NRVM), we found that VEGF-B siRNA could abolish the cardio-protective effect of RSV. The enhanced ratios of eNOS phosphorylation to eNOS expression induced by RSV were markedly reversed by VEGF-B siRNA in NRVM also. Meantime, we found that the effect of VEGF-B knock-down on eNOS activation was rescued by AMPK activator AICAR. L-NAME, a NOS inhibitor, could inhibit RSV enhanced eNOS phosphorylation but had no effect on VEGF-B expression in NRVM or in rats. Collectively, our results indicate that RSV exerts cardio-protection from ISO-induced myocardial infarction through VEGF-B/AMPK/eNOS/NO signalling pathway.
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Affiliation(s)
- Lifeng Feng
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Jiling Ren
- b Department of Pathogen Biology, School of Basic Medical Sciences , Tianjin Medical University , Tianjin , China
| | - Yafei Li
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Guifang Yang
- c Clinical Laboratory , First Teaching Hospital of Tianjin University of Traditional Chinese Medicine , Tianjin , China
| | - Licheng Kang
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Shengzheng Zhang
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Changzhen Ma
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Jing Li
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Jie Liu
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Liang Yang
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China
| | - Zhi Qi
- a Department of Pharmacology, School of Medicine , Nankai University , Tianjin , China.,d National Clinical Research Center of Kidney Diseases, Beijing , China
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Protective Role of Polyphenols against Vascular Inflammation, Aging and Cardiovascular Disease. Nutrients 2018; 11:nu11010053. [PMID: 30597847 PMCID: PMC6357531 DOI: 10.3390/nu11010053] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 01/02/2023] Open
Abstract
Aging is a major risk factor in the development of chronic diseases affecting various tissues including the cardiovascular system, muscle and bones. Age-related diseases are a consequence of the accumulation of cellular damage and reduced activity of protective stress response pathways leading to low-grade systemic inflammation and oxidative stress. Both inflammation and oxidative stress are major contributors to cellular senescence, a process in which cells stop proliferating and become dysfunctional by secreting inflammatory molecules, reactive oxygen species (ROS) and extracellular matrix components that cause inflammation and senescence in the surrounding tissue. This process is known as the senescence associated secretory phenotype (SASP). Thus, accumulation of senescent cells over time promotes the development of age-related diseases, in part through the SASP. Polyphenols, rich in fruits and vegetables, possess antioxidant and anti-inflammatory activities associated with protective effects against major chronic diseases, such as cardiovascular disease (CVD). In this review, we discuss molecular mechanisms by which polyphenols improve anti-oxidant capacity, mitochondrial function and autophagy, while reducing oxidative stress, inflammation and cellular senescence in vascular smooth muscle cells (VSMCs) and endothelial cells (ECs). We also discuss the therapeutic potential of polyphenols in reducing the effects of the SASP and the incidence of CVD.
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SIRT-3 Modulation by Resveratrol Improves Mitochondrial Oxidative Phosphorylation in Diabetic Heart through Deacetylation of TFAM. Cells 2018; 7:cells7120235. [PMID: 30487434 PMCID: PMC6315986 DOI: 10.3390/cells7120235] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 12/16/2022] Open
Abstract
Background and Purpose: Mitochondrial dysfunction remains the crucial cause for many heart diseases including diabetic cardiomyopathy (DCM). Sirtuin-3 (SIRT-3) is a protein deacetylase localized in the mitochondria and regulates mitochondrial function. Being a noteworthy mitochondrial protein deacetylase enzyme, the role of SIRT-3 in DCM is yet to be explored. Experimental Approach: Diabetes mellitus (Type-I, T1DM) was induced using streptozotocin (STZ, 50 mg/kg) in male Sprague Dawley (SD) rats. Rats with >200 mg/dL blood glucose levels were then divided randomly into two groups, DIA and DIA + RESV, where vehicle and resveratrol (25 mg/kg/day) were administered orally in both groups, respectively. Cardiac oxidative stress, fibrosis, and mitochondrial parameters were evaluated. H9c2 cells were transfected with SIRT-3 siRNA and shRNA, and ORF plasmid for silencing and overexpression, respectively. Key Results: After eight weeks, diabetic rat heart showed reduced cardiac cell size, increased oxidative stress and reduction of the activities of enzymes involved in mitochondrial oxidative phosphorylation (OXPHOS). There was reduced expression and activity of SIRT-3 and mitochondrial transcription factor (TFAM) in diabetic heart. Reduced SIRT-3 expression is also correlated with increased acetylation, decreased mitochondrial DNA (mtDNA) binding activity of TFAM, and reduced transcription of mitochondrial DNA encoded genes. Administration of resveratrol prevented the decrease in SIRT-3 and TFAM activity, which was corresponding to the reduced acetylation status of TFAM. Silencing SIRT-3 using siRNA in H9C2 cells showed increased acetylation of TFAM. Conclusion and Implications: Together our data shows that resveratrol activates SIRT-3, regulates the acetylation status of TFAM and preserves the mitochondrial function along with cellular size in diabetic rat heart.
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125
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Electroacupuncture: A Feasible Sirt1 Promoter Which Modulates Metainflammation in Diet-Induced Obesity Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:5302049. [PMID: 30425749 PMCID: PMC6217753 DOI: 10.1155/2018/5302049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 09/25/2018] [Indexed: 02/08/2023]
Abstract
It is generally accepted that metainflammation, a state of chronic and low-grade inflammation in obesity, plays a great role in metabolic disorder like insulin resistance. To gain further insight into the mechanism of metainflammation and find feasible therapy of obesity, diet-induced obesity (DIO) rats model and Electroacupuncture (EA) treatment were established in this trail. The results indicated that rising Lee's index, hyperlipidemia, insulin resistance, and increasing inflammation factors including NF-κB, TNF-α, and Macrophages 1 were determined in DIO rats while EA is exhibiting an effective intervention. Furthermore, to clarify this phenomenon and provide new recognition of alternative medicine for the treatment of metainflammation, we found that EA activating Sirt1 and Sirt1-dependent deacetylation of histone (H3K9) was the key of modulation. It should be noted that, while possible, the activating of Sirt1 could lead to deacetylation of NF-κB also. In this study, the deacetylation of NF-κB depended on higher level of Sirt1 than H3K9, which suggested that the deacetylation via Sirt1 in metainflammation could be specific and programmed.
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126
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Li G, Zhao H, Zhang X, Zhang Y, Zhao H, Yang X, Guo X, Xu B. Environmental Stress Responses of DnaJA1, DnaJB12 and DnaJC8 in Apis cerana cerana. Front Genet 2018; 9:445. [PMID: 30349556 PMCID: PMC6186841 DOI: 10.3389/fgene.2018.00445] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 09/14/2018] [Indexed: 12/23/2022] Open
Abstract
DnaJ, also known as Hsp40, plays important roles in maintaining the normal physiological state of an organism under stress conditions by mediating essential processes, such as protein synthesis, degradation, folding and metabolism. However, the exact functions of most DnaJ members are not fully understood in insects. Here, we identified three genes, AccDnaJA1, AccDnaJB12, and AccDnaJC8, in Apis cerana cerana and explored their connection with the environmental stress response. Quantitative real-time PCR results showed that the mRNA levels of AccDnaJA1, AccDnaJB12, and AccDnaJC8 were all induced under cold, UV, H2O2 and different pesticides treatment. The expression patterns of AccDnaJB12 and AccDnaJC8 were upregulated by CdCl2 and HgCl2 stress, while the transcriptional levels of AccDnaJA1 were downregulated by CdCl2 and HgCl2 stress. Western blot findings further indicated that AccDnaJB12 protein levels were increased by some stress conditions. Knockdown of each of these three genes downregulated the transcriptional patterns of several stress response-related genes at different levels. Functional analysis further demonstrated that the resistance of A. cerana cerana to lambda-cyhalothrin stress was reduced with knockdown of AccDnaJA1, AccDnaJB12, or AccDnaJC8, indicating that these three genes may be involved in the tolerance to this pesticide. Taken together, these findings indicate that AccDnaJA1, AccDnaJB12, and AccDnaJC8 may play pivotal roles in the stress response by facilitating honeybee survival under some adverse circumstances. To our knowledge, this is the first report that reveals the roles of DnaJ family proteins under different adverse circumstances in A. cerana cerana.
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Affiliation(s)
- Guilin Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Hang Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Xuemei Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Yanming Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Huayu Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Xinxin Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Tai’an, China
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127
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Stamatovic SM, Martinez-Revollar G, Hu A, Choi J, Keep RF, Andjelkovic AV. Decline in Sirtuin-1 expression and activity plays a critical role in blood-brain barrier permeability in aging. Neurobiol Dis 2018; 126:105-116. [PMID: 30196051 DOI: 10.1016/j.nbd.2018.09.006] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 08/20/2018] [Accepted: 09/05/2018] [Indexed: 01/05/2023] Open
Abstract
Accumulating evidence suggest that cerebral microvascular disease increases with advancing age and is associated with lacunar stroke, leukoaraiosis, vascular dementia and Alzheimer disease. Increased blood brain barrier (BBB) permeability/leakage takes "center stage" in ongoing age-related vascular/brain parenchymal injury. Although significant effort has been made in defining the gene mutations and risk factors involved in microvascular alterations in vascular dementia and Alzheimer disease, the intra- and intercellular pathogenic mechanisms responsible for vascular hyperpermeability are still largely unknown. The present study aimed to reveal the ongoing senescence process in brain endothelial cells and its effect on BBB integrity in healthy/non-disease conditions. An analysis of BBB integrity during the life span of C56Bl6 mice (young, 2-6 months; middle-aged, 6-12, months; old, 16-22 months) showed increased BBB permeability for different molecular sized tracers (sodium fluorescein, inulin and 20 kDa dextran) in aged mice which was accompanied by modifications in tight junction (TJ) complex organization, manifested as altered TJ protein expression (particularly claudin-5). A gene screening analysis of aging associated markers in brain microvessels isolated from "aged" mice (C56Bl6, 18-20 months) and human brain samples showed a significant decline in sirtuin-1 expression (Sirt1; ~2.8-fold) confirmed at mRNA and protein levels and by activation assay. Experiments in Sirt1 transgenic mice and brain endothelial cell-specific Sirt1 knockout mice indicated that Sirt1 affects BBB integrity, with loss increasing permeability. Similarly, in vitro, overexpressing Sirt1 or increasing Sirt1 activity with an agonist (Sirt1720) protected against senescence-induced brain endothelial barrier hyperpermeability, stabilized claudin-5/ZO-1 interactions and rescued claudin-5 expression. These findings reveal a novel role of Sirt1 in modulating aging-associated BBB persistent leakage.
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Affiliation(s)
- Svetlana M Stamatovic
- Department of Pathology, Medical School, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Anna Hu
- Department of Pathology, Medical School, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jennifer Choi
- Department of Pathology, Medical School, University of Michigan, Ann Arbor, MI 48109, USA
| | - Richard F Keep
- Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI 48109, USA; Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Anuska V Andjelkovic
- Department of Pathology, Medical School, University of Michigan, Ann Arbor, MI 48109, USA; Department of Neurosurgery, Medical School, University of Michigan, Ann Arbor, MI 48109, USA.
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128
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Yerra VG, Advani A. Histones and heart failure in diabetes. Cell Mol Life Sci 2018; 75:3193-3213. [PMID: 29934664 PMCID: PMC6063320 DOI: 10.1007/s00018-018-2857-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 12/22/2022]
Abstract
Although heart failure is now accepted as being a major long-term complication of diabetes, many of the recent advances in our understanding of the pathobiology of diabetes complications have come about through the study of more traditional microvascular or macrovascular diseases. This has been the case, for example, in the evolving field of the epigenetics of diabetes complications and, in particular, the post-translational modification of histone proteins. However, histone modifications also occur in human heart failure and their perturbation also occurs in diabetic hearts. Here, we review the principal histone modifications and their enzymatic writers and erasers that have been studied to date; we discuss what is currently known about their roles in heart failure and in the diabetic heart; we draw on lessons learned from the studies of microvascular and macrovascular complications; and we speculate that therapeutically manipulating histone modifications may alter the natural history of heart failure in diabetes.
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Affiliation(s)
- Veera Ganesh Yerra
- Keenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute of St. Michael's Hospital, 6-151, 61 Queen Street East, Toronto, ON, M5C 2T2, Canada
| | - Andrew Advani
- Keenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute of St. Michael's Hospital, 6-151, 61 Queen Street East, Toronto, ON, M5C 2T2, Canada.
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129
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Kulashekar M, Stom SM, Peuler JD. Resveratrol's Potential in the Adjunctive Management of Cardiovascular Disease, Obesity, Diabetes, Alzheimer Disease, and Cancer. ACTA ACUST UNITED AC 2018; 118:596-605. [DOI: 10.7556/jaoa.2018.133] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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130
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Evans LW, Ferguson BS. Food Bioactive HDAC Inhibitors in the Epigenetic Regulation of Heart Failure. Nutrients 2018; 10:E1120. [PMID: 30126190 PMCID: PMC6115944 DOI: 10.3390/nu10081120] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/15/2018] [Accepted: 08/15/2018] [Indexed: 12/21/2022] Open
Abstract
Approximately 5.7 million U.S. adults have been diagnosed with heart failure (HF). More concerning is that one in nine U.S. deaths included HF as a contributing cause. Current HF drugs (e.g., β-blockers, ACEi) target intracellular signaling cascades downstream of cell surface receptors to prevent cardiac pump dysfunction. However, these drugs fail to target other redundant intracellular signaling pathways and, therefore, limit drug efficacy. As such, it has been postulated that compounds designed to target shared downstream mediators of these signaling pathways would be more efficacious for the treatment of HF. Histone deacetylation has been linked as a key pathogenetic element for the development of HF. Lysine residues undergo diverse and reversible post-translational modifications that include acetylation and have historically been studied as epigenetic modifiers of histone tails within chromatin that provide an important mechanism for regulating gene expression. Of recent, bioactive compounds within our diet have been linked to the regulation of gene expression, in part, through regulation of the epi-genome. It has been reported that food bioactives regulate histone acetylation via direct regulation of writer (histone acetyl transferases, HATs) and eraser (histone deacetylases, HDACs) proteins. Therefore, bioactive food compounds offer unique therapeutic strategies as epigenetic modifiers of heart failure. This review will highlight food bio-actives as modifiers of histone deacetylase activity in the heart.
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Affiliation(s)
- Levi W Evans
- Department of Agriculture, Nutrition, & Veterinary Sciences, University of Nevada, Reno, NV 89557, USA.
- Center for Cardiovascular Research, University of Nevada, Reno, NV 89557, USA.
- Environmental Science & Health, University of Nevada, Reno, NV 89557, USA.
| | - Bradley S Ferguson
- Department of Agriculture, Nutrition, & Veterinary Sciences, University of Nevada, Reno, NV 89557, USA.
- Center for Cardiovascular Research, University of Nevada, Reno, NV 89557, USA.
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132
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Jiang X, Ganesan P, Rengarajan T, Choi DK, Arulselvan P. Cellular phenotypes as inflammatory mediators in Parkinson's disease: Interventional targets and role of natural products. Biomed Pharmacother 2018; 106:1052-1062. [PMID: 30119171 DOI: 10.1016/j.biopha.2018.06.162] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/15/2022] Open
Abstract
Pathogenesis of Parkinson's disease (PD) is undoubtedly a multifactorial phenomenon, with diverse etiological agents. Pro-inflammatory mediators act as a skew that directs disease progression during neurodegenerative diseases. Understanding the dynamics of inflammation and inflammatory mediators in preventing or reducing disease progression has recently gained much attention. Inflammatory neuro-degeneration is regulated via cytokines, chemokines, lipid mediators and immune cell subsets; however, individual cellular phenotypes in the Central Nervous System (CNS) acts in diverse ways whose persistent activation leads to unresolving inflammation often causing unfavorable outcomes in neurodegenerative disease like PD. Specifically, activation of cellular phenotypes like astrocytes, microglia, activation of peripheral immune cells requires different activation signals and agents like (cytokines, misfolded protein aggregates, infectious agents, pesticides like organophosphates, etc.,). However, what is unknown is how the different cellular phenotypes respond uniquely and the role of the factors they secrete alters the signal cascades in the complex neuron-microglial connections in the CNS. Hence, understanding the role of cellular phenotypes and the inflammatory mediators, the cross talk among the signals and their receptors can help us to identify the potential therapeutic target using natural products. In this review we have tried to put together the role of cellular phenotypes as a skew that favors PD progression and we have also discussed how the lack of experimental approaches and challenges that affects understanding the cellular targets that can be used against natural derivatives in alleviating PD pathophysiology. Together, this review will provide the better insights into the role of cellular phenotypes of neuroinflammation, inflammatory mediators and the orchestrating factors of inflammation and how they can be targeted in a more specific way that can be used in the clinical management of PD.
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Affiliation(s)
- Xu Jiang
- Department of Neurology, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, 3 Shajing St, Baoan Qu, Shenzhen Shi, Guangdong Sheng, 518104, China.
| | - Palanivel Ganesan
- Nanotechnology Research Center and Department of Applied Life Science, College of Biomedical and Health Science, Konkuk University, Chungju, 380-701, Republic of Korea; Department of Biotechnology, College of Biomedical and Health Science, Konkuk University, Chungju, 380-701, Republic of Korea.
| | - Thamaraiselvan Rengarajan
- Scigen Research and Innovation Pvt. Ltd., Periyar Technology Business Incubator, Periyar Nagar, Thanjavur, 613403, India.
| | - Dong-Kug Choi
- Nanotechnology Research Center and Department of Applied Life Science, College of Biomedical and Health Science, Konkuk University, Chungju, 380-701, Republic of Korea; Department of Biotechnology, College of Biomedical and Health Science, Konkuk University, Chungju, 380-701, Republic of Korea.
| | - Palanisamy Arulselvan
- Scigen Research and Innovation Pvt. Ltd., Periyar Technology Business Incubator, Periyar Nagar, Thanjavur, 613403, India; Muthayammal Centre for Advanced Research, Muthayammal College of Arts and Science, Rasipuram, Namakkal, Tamilnadu, 637408, India.
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133
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Evaluation of Oxidative Stress in Cardiomyocytes during the Aging Process in Rats Treated with Resveratrol. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1390483. [PMID: 29854072 PMCID: PMC5954862 DOI: 10.1155/2018/1390483] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/15/2018] [Accepted: 04/02/2018] [Indexed: 12/22/2022]
Abstract
The substantial increase in the number of elderly people in our societies represents a challenge for biology and medicine. The societies of the industrialized countries are subject to a progressive aging process that translates into an increase in the cardiovascular risk of the population. In the present work, the activity of catalase and superoxide dismutase was evaluated, as well as markers of oxidative stress (concentration of nitric oxide and total lipoperoxidation in its main components: malondialdehyde and 4-hydroxyalkene) in cardiomyocytes during the aging process in rats treated with resveratrol. Rats were divided into 4 groups according to the following categories: control (without treatment), negative control group (administered with physiological solution with 10% ethanol), positive control group (administered with vitamin E, 2 mg/kg/day), and group administered with resveratrol (10 mg/kg/day); these groups in turn were divided into 2, 4, 6, and 8 months of treatment. The analysis of nitric oxide showed a decreased level in the cardiac tissue in the groups treated with resveratrol; the same occurs when total lipoperoxidation is analyzed. The enzymatic activity studied (catalase and superoxide dismutase) did not present significant changes with respect to the controls. It is concluded that the cardioprotective effect of resveratrol is due to the antioxidant effect and other antiaging effects and not to the activation of the enzymes catalase and superoxide dismutase.
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134
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Obesity-induced mouse benign prostatic hyperplasia (BPH) is improved by treatment with resveratrol: implication of oxidative stress, insulin sensitivity and neuronal growth factor. J Nutr Biochem 2018; 55:53-58. [DOI: 10.1016/j.jnutbio.2017.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 11/01/2017] [Accepted: 12/21/2017] [Indexed: 12/15/2022]
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135
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Maiuolo J, Maretta A, Gliozzi M, Musolino V, Carresi C, Bosco F, Mollace R, Scarano F, Palma E, Scicchitano M, Nucera S, Sergi D, Muscoli S, Gratteri S, Muscoli C, Mollace V. Ethanol-induced cardiomyocyte toxicity implicit autophagy and NFkB transcription factor. Pharmacol Res 2018; 133:141-150. [PMID: 29679641 DOI: 10.1016/j.phrs.2018.04.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/04/2018] [Accepted: 04/04/2018] [Indexed: 02/06/2023]
Abstract
Chronic ethanol (EtOH) consumption causes early detrimental consequences in many tissues including the myocardium, though the molecular mechanisms leading to the alcoholic cardiomyopathy (ACM) still remain to be elucidated. Here, we studied several biomolecular changes occurring in cardiomyoblasts after their exposure to sublethal concentrations of EtOH and the potential synergistic effect with methylmercury (MM) or doxorubicin (DOXO), which are known to produce direct myocardial dysfunction. In addition, the possible role of autophagic responses and Nuclear Factor kappa-B (NFkB) modulation in early post-alcoholic myocardial damage has been investigated. H9c2 rat cardiomyoblasts were incubated for fifteen days with a sub-lethal concentrations of EtOH (1-1000 μM). In particular, treatment of H9c2 cells with EtOH produced an increase of reactive oxygen species (ROS) and the activation of autophagy. Furthermore, chronic exposure to EtOH, was accompanied by a translocation of NFkB into the nucleus dose-dependently. Finally, co-incubation of EtOH (1-1000 μM) with sublethal concentrations of MM or DOXO showed a prominent apoptotic death of cardiomyoblasts accompanied by ROS overproduction, autophagy activation and by an increased nuclear translocation of NFkB as compared to untreated cells. Thus, EtOH produces early changes in cardiomyoblasts characterized by oxidative stress, reactive autophagy and NFkB modulation at concentrations unable to produce direct cell death. Combination of EtOH with cardiotoxic pollutants or drugs makes the cardiomyocyte vulnerable to exogenous insults leading to apoptosis. These data contribute to better identify molecular mechanisms underlying early stages of alcoholic cardiomyopathy and suggest novel strategies to counteract integrated risk of cardiotoxicity in chronic alcohol consumption.
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Affiliation(s)
- Jessica Maiuolo
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Alessia Maretta
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Micaela Gliozzi
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Vincenzo Musolino
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Cristina Carresi
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Francesca Bosco
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Rocco Mollace
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Federica Scarano
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Ernesto Palma
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Miriam Scicchitano
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Saverio Nucera
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Domenico Sergi
- Department of Cardiovascular Disease, Tor Vergata University of Rome, Rome, Italy
| | - Saverio Muscoli
- Department of Cardiovascular Disease, Tor Vergata University of Rome, Rome, Italy
| | - Santo Gratteri
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy
| | - Carolina Muscoli
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy; San Raffaele IRCCS Pisana, Rome, Italy
| | - Vincenzo Mollace
- Institute of Research for Food Safety & Health IRC-FSH, University "Magna Graecia", Nutramed Consortium, Catanzaro, Italy; San Raffaele IRCCS Pisana, Rome, Italy.
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Pickering RJ, Rosado CJ, Sharma A, Buksh S, Tate M, de Haan JB. Recent novel approaches to limit oxidative stress and inflammation in diabetic complications. Clin Transl Immunology 2018; 7:e1016. [PMID: 29713471 PMCID: PMC5905388 DOI: 10.1002/cti2.1016] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/16/2018] [Accepted: 03/20/2018] [Indexed: 12/25/2022] Open
Abstract
Diabetes is considered a major burden on the healthcare system of Western and non‐Western societies with the disease reaching epidemic proportions globally. Diabetic patients are highly susceptible to developing micro‐ and macrovascular complications, which contribute significantly to morbidity and mortality rates. Over the past decade, a plethora of research has demonstrated that oxidative stress and inflammation are intricately linked and significant drivers of these diabetic complications. Thus, the focus now has been towards specific mechanism‐based strategies that can target both oxidative stress and inflammatory pathways to improve the outcome of disease burden. This review will focus on the mechanisms that drive these diabetic complications and the feasibility of emerging new therapies to combat oxidative stress and inflammation in the diabetic milieu.
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Affiliation(s)
- Raelene J Pickering
- Department of Diabetes Central Clinical School Monash University Melbourne VIC Australia
| | - Carlos J Rosado
- Department of Diabetes Central Clinical School Monash University Melbourne VIC Australia
| | - Arpeeta Sharma
- Oxidative Stress Laboratory Basic Science Domain Baker Heart and Diabetes Institute Melbourne VIC Australia
| | - Shareefa Buksh
- Oxidative Stress Laboratory Basic Science Domain Baker Heart and Diabetes Institute Melbourne VIC Australia
| | - Mitchel Tate
- Heart Failure Pharmacology Basic Science Domain Baker Heart and Diabetes Institute Melbourne VIC Australia
| | - Judy B de Haan
- Oxidative Stress Laboratory Basic Science Domain Baker Heart and Diabetes Institute Melbourne VIC Australia
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Bariani MV, Correa F, Leishman E, Domínguez Rubio AP, Arias A, Stern A, Bradshaw HB, Franchi AM. Resveratrol protects from lipopolysaccharide-induced inflammation in the uterus and prevents experimental preterm birth. Mol Hum Reprod 2018; 23:571-581. [PMID: 28810692 DOI: 10.1093/molehr/gax036] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 06/27/2017] [Indexed: 12/31/2022] Open
Abstract
STUDY QUESTION Is resveratrol able to prevent the lipopolysaccharide (LPS)-induced preterm labor in 15-day pregnant BALB/c mice? SUMMARY ANSWER Resveratrol prevented the LPS-induced onset of preterm labor in 64% of the cases and showed anti-inflammatory and tocolytic effects by downregulating COX-2 and iNOS expression and NOS activity, and by changing the uterine prostaglandin and endocannabinoid profiling. WHAT IS KNOWN ALREADY Genital tract infections by Gram-negative bacteria are a common complication in human pregnancy and have been shown to increase risk of preterm delivery. Bacterial LPS elicits a strong maternal inflammatory response that results in preterm delivery and fetal death in a murine model endotoxin-induced preterm labor. STUDY DESIGN, SIZE, DURATION An in vivo animal study was conducted. On Day 15 of pregnancy, mice received at 8:00 h a dose of vehicle (40% ethanol in saline solution) or resveratrol (3 mg/kg in vehicle) via oral gavage followed by two doses of LPS or vehicle administered intraperitoneally (i.p.), the first one at 10:00 h (0.17 mg/kg in 0.1 ml of sterile saline solution) and the second at 13:00 h (0.5 mg/kg in 0.1 ml of sterile saline solution). The mice were closely observed for any signs of morbidity (piloerection, decreased movement, and diarrhea), vaginal bleeding or preterm delivery. The beginning of preterm delivery was defined by early delivery of the first pup. Normal term labor occurs on Day 19 of gestation. PARTICIPANTS/MATERIALS, SETTING, METHODS Time of labor, pregnancy outcome and morphological features were evaluated after LPS and/or resveratrol administration. Uterine stripes were collected 5 h after the last LPS injection and prostaglandin and endocannabinoid profiling was analyzed by mass spectrometry. Nitric oxide synthase (NOS) activity was measured by radioconversion assay. Cyclooxygenase-2 (Cox-2) and 15-hydroxyprostaglandin dehydrogenase (15-Pgdh) mRNA levels were analyzed by RT-PCR whilst the protein expression of inducible nitric oxide synthase (iNOS), COX-1 and COX-2 were studied by western blot. MAIN RESULTS AND THE ROLE OF CHANCE In vivo treatment of 15-day pregnant BALB/c mice with resveratrol prevented the LPS-induced preterm birth in 64% of the cases, whereas only 15% of mice with LPS alone escaped preterm birth. Treatment with resveratrol resulted in a reduced NOS activity (P < 0.05) in the uterus of LPS-treated mice. Similarly, resveratrol reduced the expression of LPS-induced pro-inflammatory agents such as iNOS (P < 0.05), COX-2 (P < 0.05), prostaglandin E2 (PGE2) (P < 0.05) and anandamide (AEA) (P < 0.05). Moreover, resveratrol administration resulted in changes in the uterine endocannabinoid profiling altered by LPS. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Since our experimental design involves the use of mice, the extrapolation of the results presented here to humans is limited. WIDER IMPLICATIONS OF THE FINDINGS Our findings provide evidence for the tocolytic effects of resveratrol. STUDY FUNDING AND COMPETING INTEREST(S) Dr Ana María Franchi was funded by Agencia Nacional para la Promoción Científica y Tecnológica (PICT 2013/0097) and by Consejo Nacional de Investigaciones Científicas y Técnicas (PIP 2012/0061). Dr Heather B. Bradshaw was funded by NIH (DA006668). The authors have no competing interests.
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Affiliation(s)
- María Victoria Bariani
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Fernando Correa
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Emma Leishman
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana,USA
| | - Ana Paula Domínguez Rubio
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Andreína Arias
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Aníbal Stern
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Heather B Bradshaw
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, Indiana,USA
| | - Ana María Franchi
- Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Fisiopatología de la Preñez y el Parto, Centro de Estudios Farmacológicos y Botánicos (CEFyBO), Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
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138
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Chen X, Qian J, Wang L, Li J, Zhao Y, Han J, Khan Z, Chen X, Wang J, Liang G. Kaempferol attenuates hyperglycemia-induced cardiac injuries by inhibiting inflammatory responses and oxidative stress. Endocrine 2018; 60:83-94. [PMID: 29392616 DOI: 10.1007/s12020-018-1525-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 01/09/2018] [Indexed: 02/06/2023]
Abstract
PURPOSE Suppression of inflammation and oxidative stress is an attractive strategy to against diabetic cardiomyopathy (DCM). Kaempferol (KPF) exerts both anti-inflammatory and antioxidant pharmacological properties. However, little is known about the effect of KPF on protecting myocardial injury in diabetes. The present study aimed to investigate the effect of KPF on DCM and underlying mechanism. METHODS Anti-inflammation and anti-oxidative stress activities of KPF were evaluated in H9c2 cells or primary cardiomyocytes by real-time quantitate PCR, immunoblotting, immunofluorescence, ELISA, and FACS. Streptozotocin (STZ)-induced type 1 diabetes mellitus mice were constructed. Corresponding to experiments in vitro, the therapeutic effect of KPF was also assessed using heart tissues from mice. RESULTS KPF significantly inhibited high glocose (HG) induced expression of inflammatory cytokines and generation of ROS, leading to reduced fibrotic responses and cell apoptosis in vitro. KPF mediated DCM protective effects through inhibiting nuclear factor-κB (NF-κB) nucleus translocation and activating nuclear factor-erythroid 2 p45-related factor-2 (Nrf-2). In STZ-induced type 1 diabetic mouse model, KPF prevented diabetes-induced cardiac fibrosis and apoptosis. These changes were also accompanied by reducing inflammation and oxidative stress in diabetic mice hearts. CONCLUSION KPF is a potential therapeutic agent for the treatment of DCM, mechanically linked to inhibition of NF-κB and Nrf-2 activation.
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Affiliation(s)
- Xuemei Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Jianchang Qian
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Lintao Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Jieli Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Yunjie Zhao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Jibo Han
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
- Department of Cardiology, The First Affiliated Hospital, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Zia Khan
- Department of Pathology and Laboratory Medicine, Western University, London, ON, N6A5C1, Canada
| | - Xiaojun Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China
| | - Jingying Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China.
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, 325035, Wenzhou, Zhejiang, China.
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139
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D'Onofrio N, Servillo L, Balestrieri ML. SIRT1 and SIRT6 Signaling Pathways in Cardiovascular Disease Protection. Antioxid Redox Signal 2018; 28:711-732. [PMID: 28661724 PMCID: PMC5824538 DOI: 10.1089/ars.2017.7178] [Citation(s) in RCA: 249] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 05/24/2017] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE Oxidative stress represents the common hallmark of pathological conditions associated with cardiovascular disease (CVD), including atherosclerosis, heart failure, hypertension, aging, diabetes, and other vascular system-related diseases. The sirtuin (SIRT) family, comprising seven proteins (SIRT1-SIRT7) sharing a highly conserved nicotinamide adenine dinucleotide (NAD+)-binding catalytic domain, attracted a great attention for the past few years as stress adaptor and epigenetic enzymes involved in the cellular events controlling aging-related disorder, cancer, and CVD. Recent Advances: Among sirtuins, SIRT1 and SIRT6 are the best characterized for their protective roles against inflammation, vascular aging, heart disease, and atherosclerotic plaque development. This latest role has been only recently unveiled for SIRT6. Of interest, in recent years, complex signaling networks controlled by SIRT1 and SIRT6 common to stress resistance, vascular aging, and CVD have emerged. CRITICAL ISSUES We provide a comprehensive overview of recent developments on the molecular signaling pathways controlled by SIRT1 and SIRT6, two post-translational modifiers proven to be valuable tools to dampen inflammation and oxidative stress at the cardiovascular level. FUTURE DIRECTIONS A deeper understanding of the epigenetic mechanisms through which SIRT1 and SIRT6 act in the signalings responsible for onset and development CVD is a prime scientific endeavor of the upcoming years. Multiple "omic" technologies will have widespread implications in understanding such mechanisms, speeding up the achievement of selective and efficient pharmacological modulation of sirtuins for future applications in the prevention and treatment of CVD. Antioxid. Redox Signal. 28, 711-732.
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Affiliation(s)
- Nunzia D'Onofrio
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
| | - Luigi Servillo
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
| | - Maria Luisa Balestrieri
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
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Abstract
BACKGROUND Minimal Hepatic Encephalopathy (MHE) is characterized by an impairment of social interaction, emotional behavior, sleep disorders, physical and mental symptoms, and diminished Quality of Life (QoL). The aim of our study is evaluating the potential liver health promoting a perspective of Resveratrol (RV) activities and evaluate whether RV treatment may improve health related quality of life (HRQL) and reduce depression and anxiety in patients with MHE. METHODS We evaluated depression using the Beck Depression Inventory test, anxiety with State-trait anxiety inventory test, quality of life through SF-36 test, and ammonia serum levels in 70 MHE patients that were randomized into two groups. RESULTS In the comparison between RV group and placebo group we observed a decrease in Back Depression Inventory (BDI) (p < 0.001), in State-trait anxiety inventory (STAI) (p < 0.001), and improve in physical function (p < 0.001), in role physical (p < 0.05), in body pain (p < 0.05), in general health (p < 0.001), in vitality (p < 0.05), and in social function (p < 0.001). CONCLUSIONS Resveratrol showed efficacy in the treatment of depression, anxiety, and ammonia serum levels, and improved the quality of life Of MHE patients.
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141
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Fang WJ, Wang CJ, He Y, Zhou YL, Peng XD, Liu SK. Resveratrol alleviates diabetic cardiomyopathy in rats by improving mitochondrial function through PGC-1α deacetylation. Acta Pharmacol Sin 2018; 39:59-73. [PMID: 28770830 DOI: 10.1038/aps.2017.50] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/28/2017] [Indexed: 12/13/2022] Open
Abstract
Recent evidence shows that resveratrol (RSV) may ameliorate high-glucose-induced cardiac oxidative stress, mitochondrial dysfunction and myocardial fibrosis in diabetes. However, the mechanisms by which RSV regulates mitochondrial function in diabetic cardiomyopathy have not been fully elucidated. Mitochondrial dysfunction contributes to cardiac dysfunction in diabetic patients, which is associated with dysregulation of peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α). In this study we examined whether resveratrol alleviated cardiac dysfunction in diabetes by improving mitochondrial function via SIRT1-mediated PGC-1α deacetylation. T2DM was induced in rats by a high-fat diet combined with STZ injection. Diabetic rats were orally administered RSV (50 mg·kg-1·d-1) for 16 weeks. RSV administration significantly attenuated diabetes-induced cardiac dysfunction and hypertrophy evidenced by increasing ejection fraction (EF%), fraction shortening (FS%), ratio of early diastolic peak velocity (E velocity) and late diastolic peak velocity (A velocity) of the LV inflow (E/A ratio) and reducing expression levels of pro-hypertrophic markers ANP, BNP and β-MHC. Furthermore, manganese superoxide dismutase (SOD) activity, ATP content, mitochondrial DNA copy number, mitochondrial membrane potential and the expression of nuclear respiration factor (NRF) were all significantly increased in diabetic hearts by RSV administration, whereas the levels of malondialdehvde (MDA) and uncoupling protein 2 (UCP2) were significantly decreased. Moreover, RSV administration significantly activated SIRT1 expression and increased PGC-1α deacetylation. H9c2 cells cultured in a high glucose (HG, 30 mmol/L) condition were used for further analyzing the role of SIRT1/PGC-1α pathway in RSV regulation of mitochondrial function. RSV (20 μmol/L) caused similar beneficial effects in HG-treated H9c2 cells in vitro as in diabetic rats, but these protective effects were abolished by addition of a SIRT1 inhibitor sirtinol (25 μmol/L) or by SIRT1 siRNA transfection. In H9c2 cells, RSV-induced PGC-1α deacetylation was dependent on SIRT1, which was also abolished by a SIRT1 inhibitor and SIRT1 siRNA transfection. Our results demonstrate that resveratrol attenuates cardiac injury in diabetic rats through regulation of mitochondrial function, which is mediated partly through SIRT1 activation and increased PGC-1α deacetylation.
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142
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Ugwu FN, Yu AP, Sin TK, Tam BT, Lai CW, Wong SC, Siu PM. Protective Effect of Unacylated Ghrelin on Compression-Induced Skeletal Muscle Injury Mediated by SIRT1-Signaling. Front Physiol 2017; 8:962. [PMID: 29225581 PMCID: PMC5705540 DOI: 10.3389/fphys.2017.00962] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/10/2017] [Indexed: 12/30/2022] Open
Abstract
Unacylated ghrelin, the predominant form of circulating ghrelin, protects myotubes from cell death, which is a known attribute of pressure ulcers. In this study, we investigated whether unacylated ghrelin protects skeletal muscle from pressure-induced deep tissue injury by abolishing necroptosis and apoptosis signaling and whether these effects were mediated by SIRT1 pathway. Fifteen adult Sprague Dawley rats were assigned to receive saline or unacylated ghrelin with or without EX527 (a SIRT1 inhibitor). Animals underwent two 6-h compression cycles with 100 mmHg static pressure applied over the mid-tibialis region of the right limb whereas the left uncompressed limb served as the intra-animal control. Muscle tissues underneath the compression region, and at the similar region of the opposite uncompressed limb, were collected for analysis. Unacylated ghrelin attenuated the compression-induced muscle pathohistological alterations including rounding contour of myofibers, extensive nucleus accumulation in the interstitial space, and increased interstitial space. Unacylated ghrelin abolished the increase in necroptosis proteins including RIP1 and RIP3 and attenuated the elevation of apoptotic proteins including p53, Bax, and AIF in the compressed muscle. Furthermore, unacylated ghrelin opposed the compression-induced phosphorylation and acetylation of p65 subunit of NF-kB. The anti-apoptotic effect of unacylated ghrelin was shown by a decrease in apoptotic DNA fragmentation and terminal dUTP nick-end labeling index in the compressed muscle. The protective effects of unacylated ghrelin vanished when co-treated with EX527. Our findings demonstrated that unacylated ghrelin protected skeletal muscle from compression-induced injury. The myoprotective effects of unacylated ghrelin on pressure-induced tissue injury were associated with SIRT1 signaling.
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Affiliation(s)
- Felix N Ugwu
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Angus P Yu
- School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, Hong Kong
| | - Thomas K Sin
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Bjorn T Tam
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Christopher W Lai
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - S C Wong
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Parco M Siu
- School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, Hong Kong
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143
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4-(E)-{(p-tolylimino)-methylbenzene-1,2-diol} (TIMBD) suppresses HIV1-gp120 mediated production of IL6 and IL8 but not CCL5. Sci Rep 2017; 7:8129. [PMID: 28811543 PMCID: PMC5557832 DOI: 10.1038/s41598-017-08332-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 07/07/2017] [Indexed: 12/28/2022] Open
Abstract
Human immunodeficiency virus (HIV) has been associated with inflammatory effects that may potentially result in neurodegenerative changes and a number of newer chemotherapeutic agents are being tested to ameliorate these effects. In this study, we investigated the anti-neuroinflammatory activity of a novel resveratrol analog 4-(E)-{(p-tolylimino)-methylbenzene-1,2-diol} (TIMBD) against HIV1-gp120 induced neuroinflammation in SVG astrocytes. SVG astrocytic cells were pretreated with TIMBD or resveratrol (RES) and then transfected with a plasmid encoding HIV1-gp120. The mRNA and protein expression levels of proinflammatory cytokines IL6, IL8 and CCL5 were determined. Protein expression levels of NF-κB, AP1, p-STAT3, p-AKT, p-IKKs and p-p38 MAPK were also determined. TIMBD inhibited gp120-induced RNA and protein expression levels of IL6 and IL8, but not that of CCL5 in SVG astrocytes. Moreover, TIMBD attenuated gp120-induced phosphorylation of cJUN, cFOS, STAT3, p38-MAPK, AKT and IKKs, and the nuclear translocation of NF-κB p-65 subunit whereas RES mostly affected NF-κB protein expression levels. Our results suggest that TIMBD exerts anti-inflammatory effects better than that of RES in SVG astrocytes in vitro. These effects seem to be regulated by AP1, STAT-3 and NF-κB signaling pathways. TIMBD may thus have a potential of being a novel agent for treating HIV1-gp120-mediated neuroinflammatory diseases.
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Ma S, Feng J, Zhang R, Chen J, Han D, Li X, Yang B, Li X, Fan M, Li C, Tian Z, Wang Y, Cao F. SIRT1 Activation by Resveratrol Alleviates Cardiac Dysfunction via Mitochondrial Regulation in Diabetic Cardiomyopathy Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4602715. [PMID: 28883902 PMCID: PMC5572590 DOI: 10.1155/2017/4602715] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/31/2017] [Accepted: 06/06/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a major threat for diabetic patients. Silent information regulator 1 (SIRT1) has a regulatory effect on mitochondrial dynamics, which is associated with DCM pathological changes. Our study aims to investigate whether resveratrol, a SRIT1 activator, could exert a protective effect against DCM. METHODS AND RESULTS Cardiac-specific SIRT1 knockout (SIRT1KO) mice were generated using Cre-loxP system. SIRT1KO mice displayed symptoms of DCM, including cardiac hypertrophy and dysfunction, insulin resistance, and abnormal glucose metabolism. DCM and SIRT1KO hearts showed impaired mitochondrial biogenesis and function, while SIRT1 activation by resveratrol reversed this in DCM mice. High glucose caused increased apoptosis, impaired mitochondrial biogenesis, and function in cardiomyocytes, which was alleviated by resveratrol. SIRT1 deletion by both SIRT1KO and shRNA abolished the beneficial effects of resveratrol. Furthermore, the function of SIRT1 is mediated via the deacetylation effect on peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), thus inducing increased expression of nuclear respiratory factor 1 (NRF-1), NRF-2, estrogen-related receptor-α (ERR-α), and mitochondrial transcription factor A (TFAM). CONCLUSIONS Cardiac deletion of SIRT1 caused phenotypes resembling DCM. Activation of SIRT1 by resveratrol ameliorated cardiac injuries in DCM through PGC-1α-mediated mitochondrial regulation. Collectively, SIRT1 may serve as a potential therapeutic target for DCM.
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Affiliation(s)
- Sai Ma
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Jing Feng
- Department of Emergency Medicine, Jinling Hospital, Nanjing, Jiangsu, China
| | - Ran Zhang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Jiangwei Chen
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Dong Han
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiang Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Bo Yang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Xiujuan Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Miaomiao Fan
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Congye Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zuhong Tian
- Department of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yabin Wang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Feng Cao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
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Xu W, Li F, Xu Z, Sun B, Cao J, Liu Y. Tert-butylhydroquinone protects PC12 cells against ferrous sulfate-induced oxidative and inflammatory injury via the Nrf2/ARE pathway. Chem Biol Interact 2017; 273:28-36. [DOI: 10.1016/j.cbi.2017.05.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/22/2017] [Accepted: 05/30/2017] [Indexed: 12/17/2022]
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Zhang D, Zhang Y, Zhu B, Zhang H, Sun Y, Sun C. Resveratrol may reverse the effects of long-term occupational exposure to electromagnetic fields on workers of a power plant. Oncotarget 2017; 8:47497-47506. [PMID: 28537898 PMCID: PMC5564581 DOI: 10.18632/oncotarget.17668] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 04/21/2017] [Indexed: 11/25/2022] Open
Abstract
High-voltage electricity lines are known to generate extremely low-frequency electromagnetic fields (ELF-EMFs). With the process of urbanization, increasing concerns has been focused on the potentially hazardous impacts of ELF-EMF on human health, and the conclusions are controversial. Little is known about the method of prevention against ELF-EMF induced healthy problems. A total of 186 male workers with occupational exposure to high-voltage electricity lines, and 154 male subjects with insignificant exposure as reference control were enrolled in this study. Resveratrol or placebo was given as dietary supplements (500 mg twice daily), and several inflammatory biomarkers and biomarkers of oxidative stress were assessed. Workers who had long-term exposure to high-voltage electricity lines exhibited elevated urinary levels of 8-hydroxy-2-deoxy-guanosine (8-OHdG) and F2-isoprostane, compared to the reference group. Lower plasma nuclear factor kappa B (NF-κB) and interleukin (IL)-6 were observed in exposed workers compared to the reference group. Resveratrol significantly reversed the adverse impacts of ELF-EMF. Stimulated cytokine production by resveratrol was found in exposed workers but not in the reference group. This study supported that occupational and long-term exposure to high-voltage electricity lines has an adverse effect on homeostasis of human body, and resveratrol supplement could be an effective protection strategy against the adverse effects induced by ELF-EMFs.
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Affiliation(s)
- Dan Zhang
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
| | - Yang Zhang
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
| | - Baoyu Zhu
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
| | - He Zhang
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
| | - Ye Sun
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
| | - Chengxun Sun
- Electrical Power Research Institute, Jilin Electrical Power Company Limited, Changchun 130021, Jilin, China
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147
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Savi M, Bocchi L, Mena P, Dall'Asta M, Crozier A, Brighenti F, Stilli D, Del Rio D. In vivo administration of urolithin A and B prevents the occurrence of cardiac dysfunction in streptozotocin-induced diabetic rats. Cardiovasc Diabetol 2017; 16:80. [PMID: 28683791 PMCID: PMC5501434 DOI: 10.1186/s12933-017-0561-3] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/15/2017] [Indexed: 12/13/2022] Open
Abstract
Background Emerging evidence suggests that specific (poly)phenols may constitute new preventative strategies to counteract cell oxidative stress and myocardial tissue inflammation, which have a key role in the patho-physiology of diabetic cardiomyopathy. In a rat model of early diabetes, we evaluated whether in vivo administration of urolithin A (UA) or urolithin B (UB), the main gut microbiota phenolic metabolites of ellagitannin-rich foods, can reduce diabetes-induced microenvironmental changes in myocardial tissue, preventing cardiac functional impairment. Methods Adult Wistar rats with streptozotocin-induced type-1 diabetes (n = 29) were studied in comparison with 10 control animals. Diabetic rats were either untreated (n = 9) or subjected to daily i.p. injection of UA (n = 10) or UB (n = 10). After 3 weeks of hyperglycaemia, hemodynamics, cardiomyocyte contractile properties and calcium transients were measured to assess cardiac performance. The myocardial expression of the pro-inflammatory cytokine fractalkine and proteins involved in calcium dynamics (sarcoplasmic reticulum calcium ATPase, phospholamban and phosphorylated phospholamban) were evaluated by immunoblotting. Plasma, urine and tissue distribution of UA, UB and their phase II metabolites were determined. Results In vivo urolithin treatment reduced by approximately 30% the myocardial expression of the pro-inflammatory cytokine fractalkine, preventing the early inflammatory response of cardiac cells to hyperglycaemia. The improvement in myocardial microenvironment had a functional counterpart, as documented by the increase in the maximal rate of ventricular pressure rise compared to diabetic group (+18% and +31% in UA and UB treated rats, respectively), and the parallel reduction in the isovolumic contraction time (−12%). In line with hemodynamic data, both urolithins induced a recovery of cardiomyocyte contractility and calcium dynamics, leading to a higher re-lengthening rate (+21%, on average), lower re-lengthening times (−56%), and a more efficient cytosolic calcium clearing (−32% in tau values). UB treatment also increased the velocity of shortening (+27%). Urolithin metabolites accumulated in the myocardium, with a higher concentration of UB and UB-sulphate, potentially explaining the slightly higher efficacy of UB administration. Conclusions In vivo urolithin administration may be able to prevent the initial inflammatory response of myocardial tissue to hyperglycaemia and the negative impact of the altered diabetic milieu on cardiac performance.
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Affiliation(s)
- Monia Savi
- Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy.,Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Leonardo Bocchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy
| | - Pedro Mena
- Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - Margherita Dall'Asta
- Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - Alan Crozier
- Department of Nutrition, University of California, 3143 Meyer Hall One Shields Avenue, Davis, CA, 95616-5270, USA
| | - Furio Brighenti
- Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy
| | - Donatella Stilli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/A, 43124, Parma, Italy.
| | - Daniele Del Rio
- Department of Food and Drugs, University of Parma, Parco Area delle Scienze 27/A, 43124, Parma, Italy.
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148
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Zhang J, Wang QZ, Zhao SH, Ji X, Qiu J, Wang J, Zhou Y, Cai Q, Zhang J, Gao HQ. Astaxanthin attenuated pressure overload-induced cardiac dysfunction and myocardial fibrosis: Partially by activating SIRT1. Biochim Biophys Acta Gen Subj 2017; 1861:1715-1728. [DOI: 10.1016/j.bbagen.2017.03.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/05/2017] [Accepted: 03/10/2017] [Indexed: 02/06/2023]
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149
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Katare PB, Bagul PK, Dinda AK, Banerjee SK. Toll-Like Receptor 4 Inhibition Improves Oxidative Stress and Mitochondrial Health in Isoproterenol-Induced Cardiac Hypertrophy in Rats. Front Immunol 2017; 8:719. [PMID: 28690610 PMCID: PMC5479928 DOI: 10.3389/fimmu.2017.00719] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 06/06/2017] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Inflammation remains a crucial factor for progression of cardiac diseases and cardiac hypertrophy remains an important cause of cardiac failure over all age groups. As a key regulator of inflammation, toll-like receptor 4 (TLR4) plays an important role in pathogenesis of cardiac diseases. Being an important regulator of innate immunity, the precise pathway of TLR4-mediated cardiac complications is yet to be established. Therefore, the primary objective of the present study was to find the role of TLR4 in cardiac hypertrophy and the molecular mechanism thereof. METHODS Cardiac hypertrophy was induced with administration of isoproterenol (5 mg/kg/day, sc). TLR4 receptor inhibitor RS-LPS (lipopolysaccharide from the photosynthetic bacterium Rhodobacter sphaeroides; 5 μg/day) and agonist lipopolysaccharide (LPS) (from Escherichia coli; 3.12 μg/day) were administered through osmotic pump along with isoproterenol. Cardiac hypertrophy as well as oxidative stress and mitochondrial parameters were evaluated. RESULTS Cardiac hypertrophy was confirmed with increased heart weight/body weight ratio as well as assessment of hypertrophic markers in heart. There was a marked increase in the TLR4 expression and oxidative stress along with mitochondrial dysfunction in ISO group. TLR4 inhibition significantly decreased heart weight/body weight ratio and ANP, collagen, and β-MHC expression and restored the disturbed cellular antioxidant flux. The mitochondrial perturbations that were observed in hypertrophy heart was normalized after administration of TLR4 inhibitor but not with the agonist. TLR4 agonism further exaggerated the oxidative stress in heart and hence accelerated the disease development and progression. CONCLUSION Our data show that increased TLR4 ligand pool in cardiac hypertrophy may exaggerate the disease progression. However, inhibition of TLR4 attenuated cardiac hypertrophy through reduced cardiac redox imbalance and mitochondrial dysfunction.
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Affiliation(s)
- Parmeshwar B Katare
- Drug Discovery Research Center (DDRC), Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Pankaj K Bagul
- Drug Discovery Research Center (DDRC), Translational Health Science and Technology Institute (THSTI), Faridabad, India
| | - Amit K Dinda
- Department of Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Sanjay K Banerjee
- Drug Discovery Research Center (DDRC), Translational Health Science and Technology Institute (THSTI), Faridabad, India
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150
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Bundalo M, Romic S, Tepavcevic S, Stojiljkovic M, Stankovic A, Zivkovic M, Koricanac G. Fructose-rich diet and insulin action in female rat heart: Estradiol friend or foe? Eur J Pharmacol 2017; 811:141-147. [PMID: 28601616 DOI: 10.1016/j.ejphar.2017.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/26/2017] [Accepted: 06/06/2017] [Indexed: 01/01/2023]
Abstract
Increased intake of fructose in humans and laboratory animals is demonstrated to be a risk factor for development of metabolic disorders (insulin resistance, metabolic syndrome, type 2 diabetes) and cardiovascular diseases. On the other hand, estradiol is emphasized as a cardioprotective agent. The main goal of this review is to summarize recent findings on damaging cardiac effects of fructose-rich diet in females, mostly experimental animals, and to evaluate protective capacity of estradiol. Published results of our and other research groups indicate mostly detrimental effects of fructose-rich diet on cardiac insulin signaling molecules, glucose and fatty acid metabolism, nitric oxide production and ion transport, as well as renin-angiotensin system and inflammation. Some of these processes are involved in cardiac insulin signal transmission, others are regulated by insulin or have an influence on insulin action. Administration of estradiol to ovariectomized female rats, exposed to increased intake of fructose, was mostly beneficial to the heart, but sometimes it was ineffective or even detrimental, depending on the particular processes. We believe that these data, carefully translated to human population, could be useful for clinicians dealing with postmenopausal women susceptible to metabolic diseases and hormone replacement therapy.
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Affiliation(s)
- Maja Bundalo
- Laboratory for Radiobiology and Molecular Genetics, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Snjezana Romic
- Laboratory for Molecular Biology and Endocrinology, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Snezana Tepavcevic
- Laboratory for Molecular Biology and Endocrinology, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Mojca Stojiljkovic
- Laboratory for Molecular Biology and Endocrinology, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Stankovic
- Laboratory for Radiobiology and Molecular Genetics, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Maja Zivkovic
- Laboratory for Radiobiology and Molecular Genetics, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Goran Koricanac
- Laboratory for Molecular Biology and Endocrinology, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia.
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