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Chen S, Wang K, Fan Z, Zhou T, Li R, Zhang B, Chen J, Chi J, Wei K, Liu J, Liu Z, Ma J, Dong N, Liu J. Modulation of anti-cardiac fibrosis immune responses by changing M2 macrophages into M1 macrophages. Mol Med 2024; 30:88. [PMID: 38879491 PMCID: PMC11179216 DOI: 10.1186/s10020-024-00858-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/10/2024] [Indexed: 06/19/2024] Open
Abstract
BACKGROUND Macrophages play a crucial role in the development of cardiac fibrosis (CF). Although our previous studies have shown that glycogen metabolism plays an important role in macrophage inflammatory phenotype, the role and mechanism of modifying macrophage phenotype by regulating glycogen metabolism and thereby improving CF have not been reported. METHODS Here, we took glycogen synthetase kinase 3β (GSK3β) as the target and used its inhibitor NaW to enhance macrophage glycogen metabolism, transform M2 phenotype into anti-fibrotic M1 phenotype, inhibit fibroblast activation into myofibroblasts, and ultimately achieve the purpose of CF treatment. RESULTS NaW increases the pH of macrophage lysosome through transmembrane protein 175 (TMEM175) and caused the release of Ca2+ through the lysosomal Ca2+ channel mucolipin-2 (Mcoln2). At the same time, the released Ca2+ activates TFEB, which promotes glucose uptake by M2 and further enhances glycogen metabolism. NaW transforms the M2 phenotype into the anti-fibrotic M1 phenotype, inhibits fibroblasts from activating myofibroblasts, and ultimately achieves the purpose of treating CF. CONCLUSION Our data indicate the possibility of modifying macrophage phenotype by regulating macrophage glycogen metabolism, suggesting a potential macrophage-based immunotherapy against CF.
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Affiliation(s)
- Shiqi Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kan Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhengfeng Fan
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tingwen Zhou
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Rui Li
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bingxia Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jie Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jiangyang Chi
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Keke Wei
- Department of Immunology, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430030, China
| | - Jincheng Liu
- Department of Biochemistry & Molecular Biology, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430030, China
| | - Zongtao Liu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jingwei Ma
- Department of Immunology, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430030, China.
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.
| | - Junwei Liu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Yamasan BE, Mercan T, Erkan O, Ozdemir S. Ellagic Acid Prevents Ca 2+ Dysregulation and Improves Functional Abnormalities of Ventricular Myocytes via Attenuation of Oxidative Stress in Pathological Cardiac Hypertrophy. Cardiovasc Toxicol 2021; 21:630-641. [PMID: 33909254 DOI: 10.1007/s12012-021-09654-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/20/2021] [Indexed: 01/25/2023]
Abstract
The aim of this study was to investigate whether ellagic acid (EA) treatment can prevent changes in contractile function and Ca2+ regulation of cardiomyocytes in pathologic cardiac hypertrophy. Groups were assigned as Con group; an ISO group in which the rats received isoproterenol alone (5 mg/kg/day); and an ISO + EA group in which the rats received isoproterenol and EA (20 mg/kg/day) for 4 weeks. Subsequently, fractional shortening, intracellular Ca2+ signals, and L-type Ca2+ currents of isolated ventricular myocytes were recorded. Protein expression levels were also determined by the Western blotting method. The survival rate was increased, and the upregulated cardiac hypertrophy markers were significantly attenuated with the EA treatment. The fractional shortening and relaxation rate of myocytes was decreased in the ISO group, whereas EA significantly improved these changes. Ventricular myocytes of the ISO + EA rats displayed lower diastolic Ca2+ levels, higher Ca2+ transients, shorter Ca2+ decay, and higher L-type Ca2+ currents than those of ISO rats. Protein expression analyses indicated that the upregulated p-PLB and p-CaMKII expressions were restored by EA treatment, suggesting improved calcium handling in the ISO + EA rat heart. Moreover, ISO rats displayed significantly increased expression of p-22phox and p47phox subunits of NOX2 protein. Expression of the p22phox subunit was reduced with EA administration, while the decrease in p47phox did not reach a significant level. The increased ROS impairs Ca2+ homeostasis and contractile activity of cardiac myocytes, whereas chronic EA administration prevents Ca2+ dysregulation and functional abnormalities associated with pathological cardiac hypertrophy via the diminution of oxidative stress.
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Affiliation(s)
- Bilge E Yamasan
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Tanju Mercan
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Orhan Erkan
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Semir Ozdemir
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya, Turkey.
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3
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Alyu F, Olgar Y, Degirmenci S, Turan B, Ozturk Y. Interrelated In Vitro Mechanisms of Sibutramine-Induced Cardiotoxicity. Cardiovasc Toxicol 2021; 21:322-335. [PMID: 33389602 DOI: 10.1007/s12012-020-09622-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/24/2020] [Indexed: 11/26/2022]
Abstract
Consumption of illicit pharmaceutical products containing sibutramine has been reported to cause cardiovascular toxicity problems. This study aimed to demonstrate the toxicity profile of sibutramine, and thereby provide important implications for the development of more effective strategies in both clinical approaches and drug design studies. Action potentials (APs) were determined from freshly isolated ventricular cardiomyocytes with whole-cell configuration of current clamp as online. The maximum amplitude of APs (MAPs), the resting membrane potential (RMP), and AP duration from the repolarization phases were calculated from original records. The voltage-dependent K+-channel currents (IK) were recorded in the presence of external Cd2+ and both inward and outward parts of the current were calculated, while their expression levels were determined with qPCR. The levels of intracellular free Ca2+ and H+ (pHi) as well as reactive oxygen species (ROS) were measured using either a ratiometric micro-spectrofluorometer or confocal microscope. The mechanical activity of isolated hearts was observed with Langendorff-perfusion system. Acute sibutramine applications (10-8-10-5 M) induced significant alterations in both MAPs and RMP as well as the repolarization phases of APs and IK in a concentration-dependent manner. Sibutramine (10 μM) induced Ca2+-release from the sarcoplasmic reticulum under either electrical or caffeine stimulation, whereas it depressed left ventricular developed pressure with a marked decrease in the end-diastolic pressure. pHi inhibition by sibutramine supports the observed negative alterations in contractility. Changes in mRNA levels of different IK subunits are consistent with the acute inhibition of the repolarizing IK, affecting AP parameters, and provoke the cardiotoxicity.
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Affiliation(s)
- Feyza Alyu
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Yunus Emre Campus, 26470, Eskisehir, Turkey
| | - Yusuf Olgar
- Department of Biophysics, Faculty of Medicine, Ankara University, 06230, Ankara, Turkey
| | - Sinan Degirmenci
- Department of Biophysics, Faculty of Medicine, Ankara University, 06230, Ankara, Turkey
| | - Belma Turan
- Department of Biophysics, Faculty of Medicine, Ankara University, 06230, Ankara, Turkey
- Department of Biophysics, Faculty of Medicine, Lokman Hekim University, 06230, Ankara, Turkey
| | - Yusuf Ozturk
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Yunus Emre Campus, 26470, Eskisehir, Turkey.
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Ozturk N, Uslu S, Ozdemir S. Diabetes-induced changes in cardiac voltage-gated ion channels. World J Diabetes 2021; 12:1-18. [PMID: 33520105 PMCID: PMC7807254 DOI: 10.4239/wjd.v12.i1.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 11/05/2020] [Accepted: 11/13/2020] [Indexed: 02/06/2023] Open
Abstract
Diabetes mellitus affects the heart through various mechanisms such as microvascular defects, metabolic abnormalities, autonomic dysfunction and incompatible immune response. Furthermore, it can also cause functional and structural changes in the myocardium by a disease known as diabetic cardiomyopathy (DCM) in the absence of coronary artery disease. As DCM progresses it causes electrical remodeling of the heart, left ventricular dysfunction and heart failure. Electrophysiological changes in the diabetic heart contribute significantly to the incidence of arrhythmias and sudden cardiac death in diabetes mellitus patients. In recent studies, significant changes in repolarizing K+ currents, Na+ currents and L-type Ca2+ currents along with impaired Ca2+ homeostasis and defective contractile function have been identified in the diabetic heart. In addition, insulin levels and other trophic factors change significantly to maintain the ionic channel expression in diabetic patients. There are many diagnostic tools and management options for DCM, but it is difficult to detect its development and to effectively prevent its progress. In this review, diabetes-associated alterations in voltage-sensitive cardiac ion channels are comprehensively assessed to understand their potential role in the pathophysiology and pathogenesis of DCM.
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Affiliation(s)
- Nihal Ozturk
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya 07058, Turkey
| | - Serkan Uslu
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya 07058, Turkey
| | - Semir Ozdemir
- Department of Biophysics, Akdeniz University Faculty of Medicine, Antalya 07058, Turkey
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唐 碧, 康 品, 郭 建, 朱 磊, 徐 庆, 高 琴, 张 恒, 王 洪. [Effects of mitochondrial aldehyde dehydrogenase 2 on autophagy-associated proteins in neonatal rat myocardial fibroblasts cultured in high glucose]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:523-527. [PMID: 31140414 PMCID: PMC6743934 DOI: 10.12122/j.issn.1673-4254.2019.05.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate whether autophagy mediates the effects of aldehyde dehydrogenase 2 (ALDH2) on the proliferation of neonatal rat cardiac fibroblasts cultured in high glucose. METHODS Cardiac fibroblasts were isolated from neonatal (within 3 days) SD rats and subcultured. The fibroblasts of the third passage, after identification with immunofluorescence staining for vimentin, were treated with 5.5 mmol/L glucose (control group), 30 mmol/L glucose (high glucose group), or 30 mmol/L glucose in the presence of Alda-1 (an ALDH2 agonist), daidzin (an ALDH2 2 inhibitor), or both. Western blotting was employed to detect ALDH2, microtubule-associated protein 1 light chain 3B subunit (LC3B) and Beclin-1 in the cells, and a hydroxyproline detection kit was used for determining hydroxyproline content in cell culture medium; CCK- 8 kit was used for assessing the proliferation ability of the cardiac fibroblasts after the treatments. RESULTS Compared with the control cells, the cells exposed to high glucose exhibited obviously decreased expressions of ALDH2, Beclin-1 and LC3B and increased cell number and hydroxyproline content in the culture medium. Treatment of the high glucose-exposed cells with Alda-1 significantly increased Beclin-1, LC3B, and ALDH2 protein expressions and lowered the cell number and intracellular hydroxyproline content, whereas the application of daidzin resulted in reverse changes in the expressions of ALDH2, Beclin-1 and LC3B, viable cell number and intracellular hydroxyproline content in high glucose-exposed cells. CONCLUSIONS Mitochondrial ALDH2 inhibits the proliferation of neonatal rat cardiac fibroblasts induced by high glucose, and the effect is possibly mediated by the up-regulation of autophagy-related proteins Beclin-1 and LC3B.
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Affiliation(s)
- 碧 唐
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 品方 康
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 建路 郭
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 磊 朱
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 庆梅 徐
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 琴 高
- 蚌埠医学院 生理学教研室,安徽 蚌埠 233030Department of Physiology Cardiovascular Research Center of BengBu Medical College, Bengbu 233030, China
- 蚌埠医学院 心血管病研究中心,安徽 蚌埠 233030Department of Physiology Bengbu Medical College, Bengbu 233030, China
| | - 恒 张
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - 洪巨 王
- 蚌埠医学院第一附属医院心血管科,安徽 蚌埠 233004Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
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6
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Cheraghi G, Hajiabedi E, Niaghi B, Nazari F, Naserzadeh P, Hosseini MJ. High doses of sodium tungstate can promote mitochondrial dysfunction and oxidative stress in isolated mitochondria. J Biochem Mol Toxicol 2018; 33:e22266. [PMID: 30597718 DOI: 10.1002/jbt.22266] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/11/2018] [Accepted: 10/24/2018] [Indexed: 12/12/2022]
Abstract
Tungstate (W) is recognized as an agent of environmental pollution and a substitute to depleted uranium. According to some preliminary studies, tungstate toxicity is related to the formation of reactive oxygen species (ROS) under abnormal pathological conditions. The kidneys and liver are the main tungstate accumulation sites and important targets of tungstate toxicity. Since the mitochondrion is the main ROS production site, we evaluated the mechanistic toxicity of tungstate in isolated mitochondria for the first time, following a two-step ultracentrifugation method. Our findings demonstrated that tungstate-induced mitochondrial dysfunction is related to the increased formation of ROS, lipid peroxidation, and potential membrane collapse, correlated with the amelioration of adenosine triphosphate and glutathione contents. The present study indicated that mitochondrial dysfunction was associated with disruptive effects on the mitochondrial respiratory chain and opening of mitochondrial permeability transition (MPT) pores, which is correlated with cytochrome c release. Our findings suggest that high concentrations of tungstate (2 mM)-favored MPT pore opening in the inner membranes of liver and kidney mitochondria of rats. Besides, the results indicated higher tungstate susceptibility in the kidneys, compared with the liver.
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Affiliation(s)
- Ghazale Cheraghi
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.,Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Elnaz Hajiabedi
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.,Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran.,Food and Drug Administration Iran, University of Medical Sciences, Tehran, Iran
| | - Behnaz Niaghi
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.,Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Firouzeh Nazari
- Food and Drug Administration Iran, University of Medical Sciences, Tehran, Iran
| | - Parvaneh Naserzadeh
- Department of Pharmacology and Toxicology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Student Research Committee, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mir-Jamal Hosseini
- Zanjan Applied Pharmacology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran.,Department of Pharmacology and Toxicology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran.,Food and Drug Administration Iran, University of Medical Sciences, Tehran, Iran
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Guo J, Kang P, Zhu L, Sun S, Tao M, Zhang H, Tang B. [Mitochondrial aldehyde dehydrogenase 2 protects against high glucose-induced injury in neonatal rat cardiomyocytes by regulating CaN-NFAT3 signaling pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:1288-1293. [PMID: 30514674 DOI: 10.12122/j.issn.1673-4254.2018.11.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate whether CaN-NFAT3 pathway mediates the protective effects of aldehyde dehydrogenase (ALDH) 2 in high glucose-treated neonatal rat ventricular myocytes. METHODS The ventricular myocytes were isolated from the heart of neonatal (within 3 days) SD rats by enzyme digestion and cultured in the presence of 5-Brdu. After reaching confluence, the cultured ventricular myocytes were identified using immunofluorescence assay for α-SA protein. The cells were then cultured in either normal (5 mmol/L) or high glucose (30 mmol/L) medium in the presence of ALDH2 agonist Alda-1, ALDH 2 inhibitor Daidzin, or Alda-1 and NFAT3 inhibitor (11R-VIVIT). Fluorescent probe and ELISA were used to detect intracellular Ca2+ concentration and CaN content, respectively; ALDH2, CaN and NFAT3 protein expressions in the cells were detected using Western blotting. RESULTS Compared with cells cultured in normal glucose, the cells exposed to high glucose showed a significantly decreased expression of ALDH2 protein (P < 0.05) and increased expressions of CaN (P < 0.05) and NFAT3 proteins with also increased intracellular CaN and Ca2+ concentrations (P < 0.01). Alda-1 treatment significantly lowered Ca2+ concentration (P < 0.05), intracellular CaN content (P < 0.01), and CaN and NFAT3 protein expressions (P < 0.05), and increased ALDH2 protein expression (P < 0.05) in high glucose- exposed cells; Daidzin treatment significantly increased Ca2+ concentration (P < 0.01) and intracellular CaN content (P < 0.05) in the exposed cells. Compared with Alda-1 alone, treatment of the high glucose-exposed cells with both Alda-1 and 11R-VIVIT did not produce significant changes in the expression of ALDH2 protein (P>0.05) but significantly reduced the expression of NFAT3 protein (P < 0.05). CONCLUSIONS Mitochondrial ALDH2 protects neonatal rat cardiomyocytes against high glucose-induced injury possibly by negatively regulating Ca2+-CaN-NFAT3 signaling pathway.
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Affiliation(s)
- Jianlu Guo
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Pinfang Kang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Lei Zhu
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Shuo Sun
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Min Tao
- Department of Cardiology, Huishan District People's Hospital, Wuxi 214100, China
| | - Heng Zhang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Bi Tang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
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Elashiry M, Meghil M, Kalathingal S, Buchanan A, Rajendran M, Elrefai R, Ochieng M, Elawady A, Arce R, Sandhage K, Cutler C. Development of radiopaque, biocompatible, antimicrobial, micro-particle fillers for micro-CT imaging of simulated periodontal pockets. Dent Mater 2018; 34:569-578. [DOI: 10.1016/j.dental.2017.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 12/30/2022]
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9
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Wang N, Tan HY, Li S, Xu Y, Guo W, Feng Y. Supplementation of Micronutrient Selenium in Metabolic Diseases: Its Role as an Antioxidant. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7478523. [PMID: 29441149 PMCID: PMC5758946 DOI: 10.1155/2017/7478523] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/28/2017] [Accepted: 11/05/2017] [Indexed: 02/06/2023]
Abstract
Selenium is an essential mineral naturally found in soil, water, and some of the food. As an antioxidant, it is one of the necessary trace elements in human body and has been suggested as a dietary supplement for health benefit. Although the human body only needs a trace amount of selenium every day, plenty of recent studies have revealed that selenium is indispensable for maintaining normal functions of metabolism. In this study, we reviewed the antioxidant role of nutritional supplementation of selenium in the management of major chronic metabolic disorders, including hyperlipidaemia, hyperglycaemia, and hyperphenylalaninemia. Clinical significance of selenium deficiency in chronic metabolic diseases was elaborated, while clinical and experimental observations of dietary supplementation of selenium in treating chronic metabolic diseases, such as diabetes, arteriosclerosis, and phenylketonuria, were summarized. Toxicity and recommended dose of selenium were discussed. The mechanism of action was also proposed via inspecting the interaction of molecular networks and predicting target protein such as xanthine dehydrogenase in various diseases. Future direction in studying the role of selenium in metabolic disorders was also highlighted. In conclusion, highlighting the beneficial role of selenium in this review would advance our knowledge of the dietary management of chronic metabolic diseases.
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Affiliation(s)
- Ning Wang
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hor-Yue Tan
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Sha Li
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yu Xu
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Wei Guo
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yibin Feng
- School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong
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10
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Olgar Y, Celen MC, Yamasan BE, Ozturk N, Turan B, Ozdemir S. Rho-kinase inhibition reverses impaired Ca 2+ handling and associated left ventricular dysfunction in pressure overload-induced cardiac hypertrophy. Cell Calcium 2017; 67:81-90. [PMID: 29029794 DOI: 10.1016/j.ceca.2017.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/24/2017] [Accepted: 09/09/2017] [Indexed: 10/18/2022]
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11
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Ozturk N, Olgar Y, Aslan M, Ozdemir S. Effects of magnesium supplementation on electrophysiological remodeling of cardiac myocytes in L-NAME induced hypertensive rats. J Bioenerg Biomembr 2016; 48:425-36. [PMID: 27193439 DOI: 10.1007/s10863-016-9666-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/11/2016] [Indexed: 02/07/2023]
Abstract
Hypertension is one of the major risk factors of cardiac hypertrophy and magnesium deficiency is suggested to be a contributing factor in the progression of this complication. In this study, we aimed to investigate the relationship between intracellular free Mg(2+) levels and electrophysiological changes developed in the myocardium of L-NAME induced hypertensive rats. Hypertension was induced by administration of 40 mg/kg of L-NAME for 6 weeks, while magnesium treated rats fed with a diet supplemented with 1 g/kg of MgO for the same period. L-NAME administration for 6 weeks elicited a significant increase in blood pressure which was corrected with MgO treatment; thereby cardiac hypertrophy developing secondary to hypertension was prevented. Cytosolic free magnesium levels of ventricular myocytes were significantly decreased with hypertension and magnesium administration restored these changes. Hypertension significantly decreased the fractional shortening with slowing of shortening kinetics in left ventricular myocytes whereas magnesium treatment was capable of restoring hypertension-induced contractile dysfunction. Long-term magnesium treatment significantly restored the hypertension-induced prolongation in action potentials of ventricular myocytes and suppressed Ito and Iss currents. In contrast, hypertension dependent decrement in intracellular Mg(2+) level did not cause a significant change in L-type Ca(2+) currents, SR Ca(2+) content and NCX activity. Nevertheless, hypertension mediated increase in superoxide anion, hydrogen peroxide and protein oxidation mitigated with magnesium treatment. In conclusion, magnesium administration improves mechanical abnormalities observed in hypertensive rat ventricular myocytes due to reduced oxidative stress. It is likely that, changes in intracellular magnesium balance may contribute to the pathophysiology of chronic heart diseases.
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Affiliation(s)
- Nihal Ozturk
- Faculty of Medicine, Department of Biophysics, Akdeniz University, Antalya, Turkey
| | - Yusuf Olgar
- Faculty of Medicine, Department of Biophysics, Akdeniz University, Antalya, Turkey
| | - Mutay Aslan
- Faculty of Medicine, Department of Biochemistry, Akdeniz University, Antalya, Turkey
| | - Semir Ozdemir
- Faculty of Medicine, Department of Biophysics, Akdeniz University, Antalya, Turkey.
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12
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Olgar Y, Ozturk N, Usta C, Puddu PE, Ozdemir S. Ellagic acid reduces L-type Ca2+ current and contractility through modulation of NO-GC-cGMP pathways in rat ventricular myocytes. J Cardiovasc Pharmacol 2015; 64:567-73. [PMID: 25165997 DOI: 10.1097/fjc.0000000000000153] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
There is evidence that phenolic structure may have biological functions. Ellagic acid (EA), a phenolic compound, has been suggested to have cardioprotective effects. EA effects were investigated on cardiac Ca currents and contractility in rat ventricular myocytes to elucidate the underlying mechanisms. Freshly isolated ventricular myocytes from rat hearts were used. EA dose-dependently reduced Ca currents (ICaL) with EC50 = 23 nM, whereas it did not affect the inactivation and reactivation parameters. Inhibition of adenylate cyclase by SQ-22536 (10 μM) and probucol (5 μM) had no effect on EA modulation of ICaL. Nitric oxide synthase block by L-NAME (500 μM) and of guanylate cyclase by ODQ (1 μM) abolished EA inhibitory effects on ICaL. Moreover, EA blunted ventricular myocytes' fractional shortening in a concentration-dependent manner. In conclusion, EA affects ionic and mechanical properties of rat ventricular myocytes starting at nanomolar concentrations. EA suppresses ICaL and exerts negative inotropic effects through activation of NOS-GC-cGMP pathways. Thus, EA may be useful in pathophysiological conditions such as hypertension and ischemic heart diseases.
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Affiliation(s)
- Yusuf Olgar
- Departments of *Biophysics; and †Pharmacology, Faculty of Medicine, Akdeniz University, Antalya, Turkey; and ‡Department of Cardiovascular, Respiratory, Nephrological, Anesthesiological and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
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Olgar Y, Hidisoglu E, Celen MC, Yamasan BE, Yargicoglu P, Ozdemir S. 2.1 GHz electromagnetic field does not change contractility and intracellular Ca2+ transients but decreases β-adrenergic responsiveness through nitric oxide signaling in rat ventricular myocytes. Int J Radiat Biol 2015; 91:851-7. [PMID: 26136087 DOI: 10.3109/09553002.2015.1068462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
PURPOSE Due to the increasing use of wireless technology in developing countries, particularly mobile phones, the influence of electromagnetic fields (EMF) on biologic systems has become the subject of an intense debate. Therefore, in this study we investigated the effect of 2.1 GHz EMF on contractility and beta-adrenergic (β-AR) responsiveness of ventricular myocytes. MATERIALS AND METHODS Rats were randomized to the following groups: Sham rats (SHAM) and rats exposed to 2.1 GHz EMF for 2 h/day for 10 weeks (EM-10). Sarcomere shortening and Ca(2+) transients were recorded in isolated myocytes loaded with Fura2-AM and electrically stimulated at 1 Hz, while L-type Ca(2+) currents (I(CaL)) were measured using whole-cell patch clamping at 36 ± 1°C. Cardiac nitric oxide (NO) levels were measured in tissue samples using a colorimetric assay kit. RESULTS Fractional shortening and amplitude of the matched Ca(2+) transients were not changed in EM-10 rats. Although the isoproterenol-induced (10(-6) M) I(CaL) response was reduced in rats exposed to EMF, basal I(CaL) density in myocytes was similar between the two groups (p < 0.01). Moreover, EMF exposure led to a significant increase in nitric oxide levels in rat heart (p < 0.02). CONCLUSIONS Long-term exposure to 2.1 GHz EMF decreases β-AR responsiveness of ventricular myocytes through NO signaling.
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Affiliation(s)
- Yusuf Olgar
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
| | - Enis Hidisoglu
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
| | - Murat Cenk Celen
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
| | - Bilge Eren Yamasan
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
| | - Piraye Yargicoglu
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
| | - Semir Ozdemir
- a Department of Biophysics , Faculty of Medicine, Akdeniz University , Antalya , Turkey
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Lemus R, Venezia CF. An update to the toxicological profile for water-soluble and sparingly soluble tungsten substances. Crit Rev Toxicol 2015; 45:388-411. [PMID: 25695728 PMCID: PMC4732414 DOI: 10.3109/10408444.2014.1003422] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 12/28/2014] [Indexed: 12/08/2022]
Abstract
Tungsten is a relatively rare metal with numerous applications, most notably in machine tools, catalysts, and superalloys. In 2003, tungsten was nominated for study under the National Toxicology Program, and in 2011, it was nominated for human health assessment under the US Environmental Protection Agency's (EPA) Integrated Risk Information System. In 2005, the Agency for Toxic Substances and Disease Registry (ATSDR) issued a toxicological profile for tungsten, identifying several data gaps in the hazard assessment of tungsten. By filling the data gaps identified by the ATSDR, this review serves as an update to the toxicological profile for tungsten and tungsten substances. A PubMed literature search was conducted to identify reports published during the period 2004-2014, in order to gather relevant information related to tungsten toxicity. Additional information was also obtained directly from unpublished studies from within the tungsten industry. A systematic approach to evaluate the quality of data was conducted according to published criteria. This comprehensive review has gathered new toxicokinetic information and summarizes the details of acute and repeated-exposure studies that include reproductive, developmental, neurotoxicological, and immunotoxicological endpoints. Such new evidence involves several relevant studies that must be considered when regulators estimate and propose a tungsten reference or concentration dose.
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Affiliation(s)
- Ranulfo Lemus
- International Tungsten Industry Association (ITIA), London, UK
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Bertinat R, Nualart F, Li X, Yáñez AJ, Gomis R. Preclinical and Clinical Studies for Sodium Tungstate: Application in Humans. ACTA ACUST UNITED AC 2015; 6. [PMID: 25995968 PMCID: PMC4435618 DOI: 10.4172/2155-9899.1000285] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetes is a complex metabolic disorder triggered by the deficient secretion of insulin by the pancreatic β-cell or the resistance of peripheral tissues to the action of the hormone. Chronic hyperglycemia is the major consequence of this failure, and also the main cause of diabetic problems. Indeed, several clinical trials have agreed in that tight glycemic control is the best way to stop progression of the disease. Many anti-diabetic drugs for treatment of type 2 diabetes are commercially available, but no ideal normoglycemic agent has been developed yet. Moreover, weight gain is the most common side effect of many oral anti-diabetic agents and insulin, and increased weight has been shown to worsen glycemic control and increase the risk of diabetes progression. In this sense, the inorganic salt sodium tungstate (NaW) has been studied in different animal models of metabolic syndrome and diabetes, proving to have a potent effect on normalizing blood glucose levels and reducing body weight, without any hypoglycemic action. Although the liver has been studied as the main site of NaW action, positive effects have been also addressed in muscle, pancreas, brain, adipose tissue and intestine, explaining the effective anti-diabetic action of this salt. Here, we review NaW research to date in these different target organs. We believe that NaW deserves more attention, since all available anti-diabetic treatments remain suboptimal and new therapeutics are urgently needed.
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Affiliation(s)
- Romina Bertinat
- Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia, Chile ; Centro de Microscopía Avanzada, CMA-Bío Bío, Universidad de Concepción, Concepción, Chile
| | - Francisco Nualart
- Centro de Microscopía Avanzada, CMA-Bío Bío, Universidad de Concepción, Concepción, Chile
| | - Xuhang Li
- Division of Gastroenterology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, United States
| | - Alejandro J Yáñez
- Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia, Chile ; Centro de Microscopía Avanzada, CMA-Bío Bío, Universidad de Concepción, Concepción, Chile
| | - Ramón Gomis
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Barcelona, Spain ; Diabetes and Obesity Research Laboratory, IDIBAPS, Barcelona, Spain ; Department of Endocrinology and Nutrition, Hospital Clinic, Barcelona, Spain ; Faculty of Medicine, University of Barcelona, Barcelona, Spain
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Avila G, Osornio-Garduño DS, Ríos-Pérez EB, Ramos-Mondragón R. Functional and structural impact of pirfenidone on the alterations of cardiac disease and diabetes mellitus. Cell Calcium 2014; 56:428-35. [PMID: 25108569 DOI: 10.1016/j.ceca.2014.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/12/2014] [Accepted: 07/15/2014] [Indexed: 12/19/2022]
Abstract
A synthetic compound, termed pirfenidone (PFD), is considered promising for the treatment of cardiac disease. It leads to beneficial effects in animal models of diabetes mellitus (DM); as well as in heart attack, atrial fibrillation, muscular dystrophy, and diabetic cardiomyopathy (DC). The latter is a result of alterations linked to metabolic syndrome as they promote cardiac hypertrophy, fibrosis and contractile dysfunction. Although reduced level of fibrosis and stiffness represent an essential step in the mechanism of PFD action, a wide range of functional effects might also contribute to the therapeutic benefits. For example, PFD stimulates L-type voltage-gated Ca(2+) channels (LTCCs), which are pivotal for a process known as excitation-contraction coupling (ECC). Recent evidence suggests that these two types of actions - namely structural and functional - aid in treating both cardiac disease and DM. This view is supported by the fact that in DC, for example, systolic dysfunction arises from both cardiac stiffness linked to fibrosis and down-regulation of ECC. Thus, not surprisingly, clinical trials have been conducted with PFD in the settings of DM, for treating not only cardiac but also renal disease. This review presents all these concepts, along with the possible mechanisms and pathophysiological consequences.
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Affiliation(s)
- Guillermo Avila
- Department of Biochemistry, Cinvestav-IPN, AP 14-740, México City, DF 07000, Mexico.
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Ozturk N, Olgar Y, Ozdemir S. Trace elements in diabetic cardiomyopathy: An electrophysiological overview. World J Diabetes 2013; 4:92-100. [PMID: 23961319 PMCID: PMC3746091 DOI: 10.4239/wjd.v4.i4.92] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/12/2013] [Accepted: 07/19/2013] [Indexed: 02/05/2023] Open
Abstract
There is a growing body of evidence that Diabetes Mellitus leads to a specific cardiomyopathy apart from vascular disease and bring about high morbidity and mortality throughout the world. Recent clinical and experimental studies have extensively demonstrated that this cardiomyopathy causes impaired cardiac performance manifested by early diastolic and late systolic dysfunction. This impaired cardiac performance most probably have emerged upon the expression and activity of regulatory proteins such as Na+/Ca2+ exchanger, sarcoplasmic reticulum Ca2+-ATPase, ryanodine receptor and phospholamban. Over years many therapeutic strategies have been recommended for treatment of diabetic cardiomyopathy. Lately, inorganic elements have been suggested to have anti-diabetic effects due to their suggested ability to regulate glucose homeostasis, reduce oxidative stress or suppress phosphatases. Recent findings have shown that trace elements exert many biological effects including insulin-mimetic or antioxidant activity and in this manner they have been recommended as potential candidates for treatment of diabetes-induced cardiac complications, an effect based on their modes of action. Some of these trace elements are known to play an essential role as component of enzymes and thus modulate the organ function in physiological and pathological conditions. Besides, they can also manipulate redox state of the channels via antioxidant properties and thus contribute to the regulation of [Ca2+]i homeostasis and cardiac ion channels. On account of little information about some trace elements, we discussed the effect of vanadium, selenium, zinc and tungstate on diabetic heart complications.
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