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Olopade EO, Morakinyo AE, Alao JO, Oyedepo TA. Effects of n-hexane fraction of Piper guineense seed extract on N ω-nitro-L-arginine methyl ester hydrochloride-induced hypertension in rats. Cell Biochem Funct 2024; 42:e4095. [PMID: 39004810 DOI: 10.1002/cbf.4095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/14/2024] [Accepted: 07/04/2024] [Indexed: 07/16/2024]
Abstract
This study aimed to investigate the effects of the n-hexane fraction of the ethanolic seed extract of PG (NFESEPG) on hypertension induced by Nω-nitro-L-arginine methyl ester (L-NAME) in rats. Specifically, the study examined the impact of NFESEPG on blood pressure, oxidative stress markers, NO concentration, angiotensin-converting enzyme (ACE) and arginase activities, and cardiac biomarkers in hypertensive rats. The study involved collecting, identifying, and processing the PG plant to obtain the ethanolic seed extract. The extract was then partitioned with solvents to isolate the n-hexane fraction. Hypertension was induced in rats by oral administration of L-NAME for 10 days, while concurrent treatment with NFESEPG at two doses (200 and 400 mg/kg/day) was administered orally. Blood pressure was measured using a noninvasive tail-cuff method, and various biochemical parameters were assessed. Treatment with both doses of NFESEPG significantly reduced systolic and diastolic blood pressure in L-NAME-induced hypertensive rats. Additionally, NFESEPG administration increased NO concentration and decreased ACE and arginase activities, malondialdehyde (MDA) levels, and cardiac biomarkers in hypertensive rats. The findings indicate that NFESEPG effectively lowered blood pressure in hypertensive rats induced by L-NAME, potentially through mechanisms involving the modulation of oxidative stress, NO bioavailability, and cardiac biomarkers. These results suggest the therapeutic potential of NFESEPG in managing hypertension and related cardiovascular complications.
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Affiliation(s)
| | | | - Jude Oluwapelumi Alao
- School of Public Health and Interdisciplinary Studies, Auckland University of Technology, Auckland, New Zealand
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2
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Xu S, Wang F, Mai P, Peng Y, Shu X, Nie R, Zhang H. Mechanism Analysis of Vascular Calcification Based on Fluid Dynamics. Diagnostics (Basel) 2023; 13:2632. [PMID: 37627891 PMCID: PMC10453151 DOI: 10.3390/diagnostics13162632] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
Vascular calcification is the abnormal deposition of calcium phosphate complexes in blood vessels, which is regarded as the pathological basis of multiple cardiovascular diseases. The flowing blood exerts a frictional force called shear stress on the vascular wall. Blood vessels have different hydrodynamic properties due to discrepancies in geometric and mechanical properties. The disturbance of the blood flow in the bending area and the branch point of the arterial tree produces a shear stress lower than the physiological magnitude of the laminar shear stress, which can induce the occurrence of vascular calcification. Endothelial cells sense the fluid dynamics of blood and transmit electrical and chemical signals to the full-thickness of blood vessels. Through crosstalk with endothelial cells, smooth muscle cells trigger osteogenic transformation, involved in mediating vascular intima and media calcification. In addition, based on the detection of fluid dynamics parameters, emerging imaging technologies such as 4D Flow MRI and computational fluid dynamics have greatly improved the early diagnosis ability of cardiovascular diseases, showing extremely high clinical application prospects.
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Affiliation(s)
- Shuwan Xu
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518033, China; (S.X.); (F.W.); (P.M.)
| | - Feng Wang
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518033, China; (S.X.); (F.W.); (P.M.)
| | - Peibiao Mai
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518033, China; (S.X.); (F.W.); (P.M.)
| | - Yanren Peng
- Department of Cardiology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China; (Y.P.); (X.S.)
| | - Xiaorong Shu
- Department of Cardiology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China; (Y.P.); (X.S.)
| | - Ruqiong Nie
- Department of Cardiology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China; (Y.P.); (X.S.)
| | - Huanji Zhang
- Department of Cardiology, The Eighth Affiliated Hospital of Sun Yat-Sen University, Shenzhen 518033, China; (S.X.); (F.W.); (P.M.)
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Zhang B, Li S, Liu H, Wang D, Gao A, Wang Y, Gao Z, Hou T, Xu Q. Immune Infiltration in Atherosclerosis is Mediated by Cuproptosis-Associated Ferroptosis Genes. CARDIOVASCULAR INNOVATIONS AND APPLICATIONS 2023. [DOI: 10.15212/cvia.2023.0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Aims: In this study, we aimed to identify cuproptosis-associated ferroptosis genes in the atherosclerosis microarray of the Gene Expression Omnibus (GEO) database and to explore hub gene-mediated immune infiltration in atherosclerosis.
Background: Immune infiltration plays a crucial role in atherosclerosis development. Ferroptosis is a mode of cell death caused by the iron-dependent accumulation of lipid peroxides. Cuproptosis is a recently discovered type of programmed cell death. No previous studies have examined the mechanism of cuproptosis-associated ferroptosis gene regulation in immune infiltration in atherosclerosis.
Methods: We searched the qualified atherosclerosis gene microarray in the GEO database, integrated it with ferroptosis and cuproptosis genes, and calculated the correlation coefficients. We then obtained the cuproptosis-associated ferroptosis gene matrix and screened differentially expressed genes. Subsequently, we performed Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses and protein–protein interaction network analysis of differentially expressed genes. We also screened hub genes according to the Matthews correlation coefficient (MCC) algorithm. We conducted enrichment analysis of hub genes to explore their functions and predict related microRNAs (P<0.05). We also used the single-sample gene set enrichment analysis (ssGSEA) algorithm to analyze the relationships between hub genes and immune infiltration, and used immune-associated hub genes to construct a risk model. Finally, we used the drug prediction results and molecular docking technology to explore potential therapeutic drugs targeting the hub genes.
Results: Seventy-eight cuproptosis-associated ferroptosis genes were found to be involved in the cellular response to oxidative and chemical stress, and to be enriched in multiple pathways, including ferroptosis, glutathione metabolism, and atherosclerosis. Ten hub genes were identified with the MCC algorithm; according to the ssGSEA algorithm, these genes were closely associated with immune infiltration, thus indicating that cuproptosis-associated ferroptosis genes may participate in atherosclerosis by mediating immune infiltration. The receiver operating characteristic curve indicated that the model had a good ability to predict atherosclerosis risk. The results of drug prediction (adjusted P<0.001) and molecular docking showed that glutathione may be a potential therapeutic drug that targets the hub genes.
Conclusion: Cuproptosis-associated ferroptosis genes are associated with immune infiltration in atherosclerosis.
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Affiliation(s)
- Boyu Zhang
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Shuhan Li
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Hanbing Liu
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Dongze Wang
- Shandong First Medical University, Jinan, Shandong 250000, China
| | - Ang Gao
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Yihan Wang
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Zhiyuan Gao
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Tongyu Hou
- Basic Medical College of Chengde Medical University, Chengde 067000, China
| | - Qian Xu
- Basic Medical College of Chengde Medical University, Chengde 067000, China
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4
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Dludla PV, Ziqubu K, Mabhida SE, Mazibuko-Mbeje SE, Hanser S, Nkambule BB, Basson AK, Pheiffer C, Tiano L, Kengne AP. Dietary Supplements Potentially Target Plasma Glutathione Levels to Improve Cardiometabolic Health in Patients with Diabetes Mellitus: A Systematic Review of Randomized Clinical Trials. Nutrients 2023; 15:944. [PMID: 36839303 PMCID: PMC9966974 DOI: 10.3390/nu15040944] [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: 01/16/2023] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Cardiovascular diseases (CVDs) continue to be the leading cause of death in people with diabetes mellitus. Severely suppressed intracellular antioxidant defenses, including low plasma glutathione (GSH) levels, are consistently linked with the pathological features of diabetes such as oxidative stress and inflammation. In fact, it has already been established that low plasma GSH levels are associated with increased risk of CVD in people with diabetes. Dietary supplements are widely used and may offer therapeutic benefits for people with diabetes at an increased risk of developing CVDs. However, such information remains to be thoroughly scrutinized. Hence, the current systematic review explored prominent search engines, including PubMed and Google Scholar, for updated literature from randomized clinical trials reporting on the effects of dietary supplements on plasma GSH levels in people with diabetes. Available evidence indicates that dietary supplements, such as coenzyme Q10, selenium, curcumin, omega-3 fatty acids, and vitamin E or D, may potentially improve cardiometabolic health in patients with diabetes. Such beneficial effects are related to enhancing plasma GSH levels and reducing cholesterol, including biomarkers of oxidative stress and inflammation. However, available evidence is very limited and additional clinical studies are still required to validate these findings, including resolving issues related to the bioavailability of these bioactive compounds.
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Affiliation(s)
- Phiwayinkosi V. Dludla
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3880, South Africa
| | - Khanyisani Ziqubu
- Department of Biochemistry, North-West University, Mmabatho 2745, South Africa
| | - Sihle E. Mabhida
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa
| | | | - Sidney Hanser
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga 0727, South Africa
| | - Bongani B. Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Albertus K. Basson
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3880, South Africa
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa
- Centre for Cardio-Metabolic Research in Africa (CARMA), Division of Medical Physiology, University of Stellenbosch, Tygerberg 7505, South Africa
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, 60131 Ancona, Italy
| | - André P. Kengne
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg 7505, South Africa
- Department of Medicine, University of Cape Town, Cape Town 7700, South Africa
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Tawa M, Okamura T. Factors influencing the soluble guanylate cyclase heme redox state in blood vessels. Vascul Pharmacol 2022; 145:107023. [PMID: 35718342 DOI: 10.1016/j.vph.2022.107023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/09/2022] [Accepted: 06/12/2022] [Indexed: 11/15/2022]
Abstract
Soluble guanylate cyclase (sGC) plays an important role in maintaining vascular homeostasis, as an acceptor for the biological messenger nitric oxide (NO). However, only reduced sGC (with a ferrous heme) can be activated by NO; oxidized (ferric heme) and apo (absent heme) sGC cannot. In addition, the proportions of reduced, oxidized, and apo sGC change under pathological conditions. Although diseased blood vessels often show decreased NO bioavailability in the vascular wall, a shift of sGC heme redox balance in favor of the oxidized/apo forms can also occur. Therefore, sGC is of growing interest as a drug target for various cardiovascular diseases. Notably, the balance between NO-sensitive reduced sGC and NO-insensitive oxidized/apo sGC in the body is regulated in a reversible manner by various biological molecules and proteins. Many studies have attempted to identify endogenous factors and determinants that influence this redox state. For example, various reactive nitrogen and oxygen species are capable of inducing the oxidation of sGC heme. Conversely, a heme reductase and some antioxidants reduce the ferric heme in sGC to the ferrous state. This review summarizes the factors and mechanisms identified by these studies that operate to regulate the sGC heme redox state.
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Affiliation(s)
- Masashi Tawa
- Department of Pathological and Molecular Pharmacology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka 569-1094, Japan.
| | - Tomio Okamura
- Emeritus Professor, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
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Shi Y, Zhou W, Cheng M, Yu C, Wang T, Zhu L, Bao H, Hu L, Li P, Cheng X. Association of Plasma Bilirubin Levels With Peripheral Arterial Disease in Chinese Hypertensive Patients: New Insight on Sex Differences. Front Physiol 2022; 13:867418. [PMID: 35492585 PMCID: PMC9047868 DOI: 10.3389/fphys.2022.867418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/29/2022] [Indexed: 12/24/2022] Open
Abstract
Background and aims: Previous studies have indicated that Plasma total bilirubin (TBiL) might play an essential role in peripheral arterial disease (PAD). However, the effects of different levels of TBiL on PAD development remain uncertain. We aimed to examine the TBiL and the prevalence of PAD among Chinese adults with hypertension, with particular attention paid to sex differences. Methods: A total of 10,900 hypertensive subjects were included in the current study. The mean age of our study participants was 63.86 ± 9.25 years, and there were 5,129 males and 5,771 females. The outcome was peripheral arterial disease (PAD), defined as present when the ankle-brachial index (ABI) of either side was ≤0.90. The association between TBiL and PAD was examined using multivariate logistic regression analysis and the restricted cubic spline. Results: Of 10,900 hypertensive participants, 350 (3.21%) had PAD, and the mean plasma total bilirubin was 14.66 (6.86) μmol/L. The mean TBiL was 15.67 μmol/L in men and 13.76 μmol/L in women. The smoothing curve showed that a U-shaped curve association existed between TBiL and the prevalence of PAD in Chinese adults with hypertension. When stratified by sex, TBiL was significantly U-shaped associated with PAD among men but not women. Among males, the inflection point was 11.48 μmol/L; to the left inflection point, the effect size and 95% CI were 0.08, 0.01, 0.66, respectively; to the right inflection point, OR, 5.16; 95% CI,1.64, 16.25. Conclusions: We found an independent U-shaped association between TBiL and the prevalence of PAD among hypertensive subjects and a differential association between men and women. We further revealed a turning point by threshold effect analysis.
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Affiliation(s)
- Yumeng Shi
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
| | - Wei Zhou
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Mingshu Cheng
- China Jiangxi Wuyuan County Fuchun Hospitals, Shangrao, China
| | - Chao Yu
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Tao Wang
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lingjuan Zhu
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huihui Bao
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lihua Hu
- Department of Cardiovascular Medicine, Peking University First Hospital, Beijing, China
| | - Ping Li
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Ping Li, ; Xiaoshu Cheng,
| | - Xiaoshu Cheng
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Provincial Cardiovascular Disease Clinical Medical Research Center, Nanchang, China
- Center for Prevention and Treatment of Cardiovascular Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Ping Li, ; Xiaoshu Cheng,
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7
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Yi X, Zhu QX, Wu XL, Tan TT, Jiang XJ. Histone Methylation and Oxidative Stress in Cardiovascular Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6023710. [PMID: 35340204 PMCID: PMC8942669 DOI: 10.1155/2022/6023710] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/17/2022] [Accepted: 03/05/2022] [Indexed: 11/18/2022]
Abstract
Oxidative stress occurs when ROS overproduction overwhelms the elimination ability of antioxidants. Accumulated studies have found that oxidative stress is regulated by histone methylation and plays a critical role in the development and progression of cardiovascular diseases. Targeting the underlying molecular mechanism to alter the interplay of oxidative stress and histone methylation may enable creative and effective therapeutic strategies to be developed against a variety of cardiovascular disorders. Recently, some drugs targeting epigenetic modifiers have been used to treat specific types of cancers. However, the comprehensive signaling pathways bridging oxidative stress and histone methylation need to be deeply explored in the contexts of cardiovascular physiology and pathology before clinical therapies be developed. In the present review, we summarize and update information on the interplay between histone methylation and oxidative stress during the development of cardiovascular diseases such as atherosclerosis, coronary artery disease, pulmonary hypertension, and diabetic macro- and microvascular pathologies.
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Affiliation(s)
- Xin Yi
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Qiu-Xia Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Xing-Liang Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Tuan-Tuan Tan
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xue-Jun Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China
- Cardiovascular Research Institute, Wuhan University, Wuhan 430060, China
- Hubei Key Laboratory of Cardiology, Wuhan 430060, China
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Wong ND, Budoff MJ, Ferdinand K, Graham IM, Michos ED, Reddy T, Shapiro MD, Toth PP. ATHEROSCLEROTIC CARDIOVASCULAR DISEASE RISK ASSESSMENT: An American Society for Preventive Cardiology Clinical Practice Statement. Am J Prev Cardiol 2022; 10:100335. [PMID: 35342890 PMCID: PMC8943256 DOI: 10.1016/j.ajpc.2022.100335] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/17/2022] [Accepted: 03/05/2022] [Indexed: 01/08/2023] Open
Abstract
Risk for atherosclerotic cardiovascular disease (ASCVD) shows considerable heterogeneity both in generally healthy persons and in those with known ASCVD. The foundation of preventive cardiology begins with assessing baseline ASCVD risk using global risk scores based on standard office-based measures. Persons at low risk are generally recommended for lifestyle management only and those at highest risk are recommended for both lifestyle and pharmacologic therapy. Additional “risk enhancing” factors, including both traditional risk factors and novel biomarkers and inflammatory factors can be used to further assess ASCVD risk, especially in those at borderline or intermediate risk. There are also female-specific risk enhancers, social determinants of health, and considerations for high-risk ethnic groups. Screening for subclinical atherosclerosis, especially with the use of coronary calcium screening, can further inform the treatment decision if uncertain based on the above strategies. Persons with pre-existing ASCVD also have variable risk, affected by the number of major ASCVD events, whether recurrent events have occurred recently, and the presence of other major risk factors or high-risk conditions. Current guidelines define high to very high risk ASCVD accordingly. Accurate ASCVD risk assessment is crucial for the appropriate targeting of preventive therapies to reduce ASCVD risk. Finally, the clinician-patient risk discussion focusing on lifestyle management and the risks and benefits of evidence-based pharmacologic therapies to best lower ASCVD risk is central to this process. This clinical practice statement provides the preventive cardiology specialist with guidance and tools for assessment of ASCVD risk with the goal of appropriately targeting treatment approaches for prevention of ASCVD events.
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Affiliation(s)
- Nathan D. Wong
- Heart Disease Prevention Program, Division of Cardiology, University of California, Irvine, CA, United States
- Corresponding author.
| | - Matthew J. Budoff
- Division of Cardiology, Harbor-UCLA Medical Center, Torrance, CA, United States
| | - Keith Ferdinand
- Tulane University Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, LA United States
| | - Ian M. Graham
- Department of Cardiology, Trinity College, Dublin, Ireland
| | - Erin D. Michos
- Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Tina Reddy
- Tulane University Heart and Vascular Institute, Tulane University School of Medicine, New Orleans, LA United States
| | | | - Peter P. Toth
- Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- CGH Medical Center, Sterling, IL, United States
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Steinhorn B, Eroglu E, Michel T. Chemogenetic Approaches to Probe Redox Pathways: Implications for Cardiovascular Pharmacology and Toxicology. Annu Rev Pharmacol Toxicol 2022; 62:551-571. [PMID: 34530645 PMCID: PMC10507364 DOI: 10.1146/annurev-pharmtox-012221-082339] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chemogenetics refers to experimental systems that dynamically regulate the activity of a recombinant protein by providing or withholding the protein's specific biochemical stimulus. Chemogenetic tools permit precise dynamic control of specific signaling molecules to delineate the roles of those molecules in physiology and disease. Yeast d-amino acid oxidase (DAAO) enables chemogenetic manipulation of intracellular redox balance by generating hydrogen peroxide only in the presence of d-amino acids. Advances in biosensors have allowed the precise quantitation of these signaling molecules. The combination of chemogenetic approaches with biosensor methodologies has opened up new lines of investigation, allowing the analysis of intracellular redox pathways that modulate physiological and pathological cell responses. We anticipate that newly developed transgenic chemogenetic models will permit dynamic modulation of cellularredox balance in diverse cells and tissues and will facilitate the identification and validation of novel therapeutic targets involved in both physiological redox pathways and pathological oxidative stress.
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Affiliation(s)
- Benjamin Steinhorn
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Emrah Eroglu
- Genetics and Bioengineering Program, Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
- Department of Molecular Biology and Biochemistry, Medical University of Graz, 8036 Graz, Austria
| | - Thomas Michel
- Department of Medicine, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA;
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10
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Lei T, Qian H, Lei P, Hu Y. Ferroptosis-related gene signature associates with immunity and predicts prognosis accurately in patients with osteosarcoma. Cancer Sci 2021; 112:4785-4798. [PMID: 34506683 PMCID: PMC8586685 DOI: 10.1111/cas.15131] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/04/2021] [Accepted: 09/04/2021] [Indexed: 12/15/2022] Open
Abstract
Osteosarcoma has been the most common malignant bone tumor in children and adolescents, while the 5‐y survival of osteosarcoma patients gained no significant improvement over the past decades. This study aimed to explore the role of ferroptosis‐related genes (FRGs) in the development and prognosis of osteosarcoma. The datasets of osteosarcoma patients including RNA sequencing data and clinical information were acquired from the TRGET and Gene Expression Omnibus (GEO) databases. The identification of molecular subgroups with different FRG expression patterns was achieved through nonnegative matrix factorization (NMF) clustering. The prognostic model was constructed using the least absolute shrinkage and selection operator (LASSO) algorithm and multivariate Cox regression analysis. The ESTIMATE algorithm was applied for determining the stromal score, immune score, ESTIMA score, and tumor purity of osteosarcoma patients. Functional analyses including Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, Gene Set Enrichment Analysis (GSEA), and Gene Set Variation Analysis (GSVA) were conducted to explore the underlying mechanisms in the development and prognosis of osteosarcoma. Two molecular subgroups with different FRGs expression patterns were identified. The molecular subgroups with higher immune score and more active immune status showed better prognostic survival. On the basis of FRGs, a prognostic model and a nomogram integrating clinical characteristics were constructed and their prediction efficiency for osteosarcoma prognosis were well validated. Gene functional enrichment analysis showed that these differentially expressed FRGs were mainly enriched in immunity‐related signaling pathways, indicating that FRGs may affect the development and prognosis of osteosarcoma by regulating the immune microenvironment. The expression profiles of FRGs were closely related to the immunity status and prognostic survival of osteosarcoma patients. The interaction between ferroptosis and immunity in the development of osteosarcoma could provide a new insight into the exploration of molecular mechanisms and targeted therapies of osteosarcoma patients.
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Affiliation(s)
- Ting Lei
- Department of Orthopedic Surgery, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
| | - Hu Qian
- Department of Orthopedic Surgery, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China
| | - Pengfei Lei
- Department of Orthopedic Surgery, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China.,Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, China
| | - Yihe Hu
- Department of Orthopedic Surgery, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Xiangya Hospital, Central South University, Changsha, China.,Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, China
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11
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Jiang L, Luo S, Qiu T, Li Q, Jiang C, Sun X, Yang G, Zhang C, Liu X, Jiang L. Bidirectional role of reactive oxygen species during inflammasome activation in acrolein-induced human EAhy926 cells pyroptosis. Toxicol Mech Methods 2021; 31:680-689. [PMID: 34238121 DOI: 10.1080/15376516.2021.1953204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Acrolein, a known toxin in tobacco smoke, has been demonstrated to be associated with inflammatory cardiovascular diseases, such as atherosclerosis. However, the definite mechanism of acrolein-induced inflammation remains unclear. Here, we report that acrolein induces reactive oxygen species (ROS) production in EAhy926 cells. Additionally, acrolein induces EAhy926 cells' inflammatory response and pyroptosis by activating NOD-like receptor protein 3 (NLRP3) inflammasome. Also, acrolein-induced cytotoxicity could be attenuated by N-acetyl-L-cysteine (NAC). Furthermore, acrolein upregulates the level of autophagy which can be reversed by NAC. Notably, the present study also indicates that autophagy inhibited by inhibitor 3-methyladenine (3MA) and siAtg7 exacerbate acrolein-induced NLRP3 inflammasome activation and pyroptosis. In summary, acrolein induced cytotoxicity by ROS-mediated NLRP3 inflammasome activation, and ROS upregulates the level of autophagy to inhibit the NLRP3 inflammasome excessive activation, indicating the bidirectional role of ROS in acrolein-induced cellular inflammation. Our results may provide novel mechanistic insights into acrolein-induced cardiovascular toxicity.
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Affiliation(s)
- Liping Jiang
- Preventive Medicine Laboratory, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | - Songsong Luo
- Department of Internal Medicine, The Affiliated Zhong Shan Hospital of Dalian University, Dalian, Liaoning, China
| | - Tianming Qiu
- Department of Occupational and Environmental Health, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | | | - Chunteng Jiang
- Department of Internal Medicine, The Affiliated Zhong Shan Hospital of Dalian University, Dalian, Liaoning, China
| | - Xiance Sun
- Department of Occupational and Environmental Health, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | - Guang Yang
- Department of Nutrition and Food Safety, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | - Cong Zhang
- Department of Nutrition and Food Safety, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | - Xiaofang Liu
- Department of Nutrition and Food Safety, College of Public Health, Dalian Medical University, Dalian, Liaoning, China
| | - Lijie Jiang
- Department of Internal Medicine, The Affiliated Zhong Shan Hospital of Dalian University, Dalian, Liaoning, China
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Matuz-Mares D, Riveros-Rosas H, Vilchis-Landeros MM, Vázquez-Meza H. Glutathione Participation in the Prevention of Cardiovascular Diseases. Antioxidants (Basel) 2021; 10:1220. [PMID: 34439468 PMCID: PMC8389000 DOI: 10.3390/antiox10081220] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/18/2021] [Accepted: 07/23/2021] [Indexed: 01/31/2023] Open
Abstract
Cardiovascular diseases (CVD) (such as occlusion of the coronary arteries, hypertensive heart diseases and strokes) are diseases that generate thousands of patients with a high mortality rate worldwide. Many of these cardiovascular pathologies, during their development, generate a state of oxidative stress that leads to a deterioration in the patient's conditions associated with the generation of reactive oxygen species (ROS) and reactive nitrogen species (RNS). Within these reactive species we find superoxide anion (O2•-), hydroxyl radical (•OH), nitric oxide (NO•), as well as other species of non-free radicals such as hydrogen peroxide (H2O2), hypochlorous acid (HClO) and peroxynitrite (ONOO-). A molecule that actively participates in counteracting the oxidizing effect of reactive species is reduced glutathione (GSH), a tripeptide that is present in all tissues and that its synthesis and/or regeneration is very important to be able to respond to the increase in oxidizing agents. In this review, we will address the role of glutathione, its synthesis in both the heart and the liver, and its importance in preventing or reducing deleterious ROS effects in cardiovascular diseases.
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Affiliation(s)
| | | | - María Magdalena Vilchis-Landeros
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Cd. Universitaria, Coyoacán, Ciudad de México 04510, Mexico; (D.M.-M.); (H.R.-R.)
| | - Héctor Vázquez-Meza
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Cd. Universitaria, Coyoacán, Ciudad de México 04510, Mexico; (D.M.-M.); (H.R.-R.)
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Ojewunmi OO, Adeyemo TA, Oyetunji AI, Benn Y, Ekpo MG, Iwalokun BA. Association of alpha-thalassemia and Glucose-6-Phosphate Dehydrogenase deficiency with transcranial Doppler ultrasonography in Nigerian children with sickle cell anemia. J Clin Lab Anal 2021; 35:e23802. [PMID: 33938598 PMCID: PMC8183942 DOI: 10.1002/jcla.23802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 03/28/2021] [Accepted: 04/06/2021] [Indexed: 12/01/2022] Open
Abstract
Background Stroke is a devastating complication of sickle cell anemia (SCA) and can be predicted through abnormally high cerebral blood flow velocity using transcranial Doppler Ultrasonography (TCD). The evidence on the role of alpha‐thalassemia and glucose‐6‐phosphate dehydrogenase (G6PD) deficiency in the development of stroke in children with SCA is conflicting. Thus, this study investigated the association of alpha‐thalassemia and G6PD(A−) variant with abnormal TCD velocities among Nigerian children with SCA. Methods One hundred and forty‐one children with SCA were recruited: 72 children presented with normal TCD (defined as the time‐averaged mean of the maximum velocity: < 170 cm/s) and 69 children with abnormal TCD (TAMMV ≥ 200 cm/s). Alpha‐thalassemia (the α‐3.7 globin gene deletion) was determined by multiplex gap‐PCR, while G6PD polymorphisms (202G > A and 376A > G) were genotyped using restriction fragment length polymorphism—polymerase chain reaction. Results The frequency of α‐thalassemia trait in the children with normal TCD was higher than those with abnormal TCD: 38/72 (52.8%) [α‐/ α α: 41.7%, α ‐/ α ‐: 11.1%] versus 21/69 (30.4%) [α‐/ α α: 27.5%, α ‐/ α ‐: 2.9%], and the odds of abnormal TCD were reduced in the presence of the α‐thalassemia trait [Odds Ratio: 0.39, 95% confidence interval: 0.20–0.78, p = 0.007]. However, the frequencies of G6PDA− variant in children with abnormal and normal TCD were similar (11.6% vs. 15.3%, p = 0.522). Conclusion Our study reveals the protective role of α‐thalassemia against the risk of abnormal TCD in Nigerian children with SCA.
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Affiliation(s)
- Oyesola Oyewole Ojewunmi
- Sickle Cell Foundation Nigeria, Surulere, Lagos, Nigeria.,School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - Titilope Adenike Adeyemo
- Department of Haematology & Blood Transfusion, College of Medicine, University of Lagos, Lagos, Nigeria
| | | | - Yewande Benn
- Sickle Cell Foundation Nigeria, Surulere, Lagos, Nigeria
| | | | - Bamidele Abiodun Iwalokun
- Department of Molecular Biology and Biotechnology, Nigerian Institute of Medical Research, Lagos, Nigeria
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Pharmacological Activation of Nrf2 by Rosolic Acid Attenuates Endoplasmic Reticulum Stress in Endothelial Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:2732435. [PMID: 33897939 PMCID: PMC8052152 DOI: 10.1155/2021/2732435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 11/17/2020] [Accepted: 12/05/2020] [Indexed: 12/18/2022]
Abstract
Endoplasmic reticulum (ER) plays a key role in the folding, modification, and trafficking of proteins. When the homeostasis of the ER is disturbed, un/misfolded proteins accumulate in the ER which leads to ER stress. Sustained ER stress results in apoptosis, which is associated with various diseases. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a major transcription factor in redox homeostasis by regulating various genes associated with detoxification and cell-protective mechanisms. We found that Rosolic acid (RA) treatment dose-dependently activates Nrf2 in endothelial cells using the enzyme fragment complementation assay. The cytoprotective role of RA against ER stress-induced endothelial apoptosis and its molecular mechanism was explored in the present study. The Nrf2 and its target genes, as well as ER stress marker expressions, were measured by qPCR in ER stress-exposed endothelial cells. The contribution of Nrf2 in RA-mediated defense mechanism in endothelial cells was established by knockout studies using Nrf2-CRISPR/Cas9. The treatment with RA to ER stress-induced endothelial cells exhibited activation of Nrf2, as demonstrated by Nrf2 translocation and reduction of ER stress markers. We found that the Nrf2 knockout sensitized the endothelial cells against ER stress, and further, RA failed to mediate its cytoprotective effect. Proteomic studies using LC-MS/MS revealed that among the 1370 proteins detected, we found 296 differentially regulated proteins in ER stress-induced endothelial cells, and RA administration ameliorated 71 proteins towards the control levels. Of note, the ER stress in endothelial cells was attenuated by the treatment with the RA, suggesting the role of the Nrf2 activator in the pathological conditions of ER stress-associated diseases.
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Satoh K. Drug discovery focused on novel pathogenic proteins for pulmonary arterial hypertension. J Cardiol 2021; 78:1-11. [PMID: 33563508 DOI: 10.1016/j.jjcc.2021.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
Pulmonary arterial hypertension (PAH) is a fatal disease in which the wall thickening and narrowing of pulmonary microvessels progress due to complicated interactions among processes such as endothelial dysfunction, the proliferation of pulmonary artery smooth muscle cells (PASMCs) and adventitial fibrocytes, and inflammatory cell infiltration. Early diagnosis of patients with PAH is difficult and lung transplantation is the only last choice to save severely ill patients. However, the number of donors is limited. Many patients with PAH show rapid progression and a high degree of pulmonary arterial remodeling characterized by the abnormal proliferation of PASMCs, which makes treatment difficult even with multidrug therapy comprising pulmonary vasodilators. Thus, it is important to develop novel therapy targeting factors other than vasodilation, such as PASMC proliferation. In the development of PAH, inflammation and oxidative stress are deeply involved in its pathogenesis. Excessive proliferation and apoptosis resistance in PASMCs are key mechanisms underlying PAH. Based on those characteristics, we recently screened novel pathogenic proteins and have performed drug discovery targeting those proteins. To confirm the clinical significance of this, we used patient-derived blood samples to evaluate biomarker potential for diagnosis and prognosis. Moreover, we conducted high throughput screening and found several inhibitors of the pathogenic proteins. In this review, we introduce the recent progress on basic and clinical PAH research, focusing on the screening of pathogenic proteins and drug discovery.
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Affiliation(s)
- Kimio Satoh
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan.
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16
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Popyhova EB, Stepanova TV, Lagutina DD, Kiriiazi TS, Ivanov AN. The role of diabetes in the onset and development of endothelial dysfunction. ACTA ACUST UNITED AC 2020; 66:47-55. [DOI: 10.14341/probl12212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/29/2020] [Accepted: 04/06/2020] [Indexed: 01/01/2023]
Abstract
The vascular endothelium performs many functions. It is a key regulator of vascular homeostasis, maintains a balance between vasodilation and vasoconstriction, inhibition and stimulation of smooth muscle cell migration and proliferation, fibrinolysis and thrombosis, and is involved to regulation of platelet adhesion and aggregation. Endothelial dysfunction (ED) plays the critical role in pathogenesis of diabetes mellitus (DM) vascular complications. The purpose of this review was to consider the mechanisms leading to the occurrence of ED in DM. The paper discusses current literature data concerning the role of hyperglycemia, oxidative stress, advanced glycation end products in endothelial alteration. A separate section is devoted to the particularities of the functioning of the antioxidant system and their significance in the development of ED in DM. The analysis of the literature allows to conclude that pathological activation of glucose utilization pathways causes damage of endothelial cells, which is accompanied by disorders of all their basic functions. Metabolic disorders in DM cause a pronounced imbalance of free radical processes and antioxidant defense, accompanied by oxidative stress of endotheliocytes, which contributes to the progression of ED and the development of vascular complications. Many aspects of multicomponent regulatory reactions in the pathogenesis of the development of ED in DM have not been sufficiently studied.
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Ou Z, Chen Y, Li J, Ouyang F, Liu G, Tan S, Huang W, Gong X, Zhang Y, Liang Z, Deng W, Xing S, Zeng J. Glucose-6-phosphate dehydrogenase deficiency and stroke outcomes. Neurology 2020; 95:e1471-e1478. [PMID: 32651291 DOI: 10.1212/wnl.0000000000010245] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 03/16/2020] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To assess the risk of glucose-6-phosphate dehydrogenase (G6PD) on stroke prognosis, we compared outcomes between patients with stroke with and without G6PD deficiency. METHODS The study recruited 1,251 patients with acute ischemic stroke. Patients were individually categorized into G6PD-deficiency and non-G6PD-deficiency groups according to G6PD activity upon admission. The primary endpoint was poor outcome at 3 months defined by a modified Rankin Scale (mRS) score ≥2 (including disability and death). Secondary outcomes included the overall mRS score at 3 months and in-hospital death and all death within 3 months. Logistic regression and Cox models, adjusted for potential confounders, were fitted to estimate the association of G6PD deficiency with the outcomes. RESULTS Among 1,251 patients, 150 (12.0%) were G6PD-deficient. Patients with G6PD deficiency had higher proportions of large-artery atherosclerosis (odds ratio [OR] 1.53, 95% confidence interval [CI] 1.09-2.17) and stroke history (OR 1.93, 95% CI 1.26-2.90) compared to the non-G6PD-deficient group. The 2 groups differed significantly in the overall mRS score distribution (adjusted common OR 1.57, 95% CI 1.14-2.17). Patients with G6PD deficiency had higher rates of poor outcome at 3 months (adjusted OR 1.73, 95% CI 1.08-2.76; adjusted absolute risk increase 13.0%, 95% CI 2.4%-23.6%). The hazard ratio of in-hospital death for patients with G6PD-deficiency was 1.46 (95% CI 1.37-1.84). CONCLUSIONS G6PD deficiency is associated with the risk of poor outcome at 3 months after ischemic stroke and may increase the risk of in-hospital death. These findings suggest the rationality of G6PD screening in patients with stroke.
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Affiliation(s)
- Zilin Ou
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China.
| | - Yicong Chen
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Jianle Li
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Fubing Ouyang
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Gang Liu
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Shuangquan Tan
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Weixian Huang
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Xiao Gong
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Yusheng Zhang
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Zhijian Liang
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Weisheng Deng
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China
| | - Shihui Xing
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China.
| | - Jinsheng Zeng
- From Section II (S.X.), Department of Neurology (Z.O., Y.C., J.L., F.O., G.L., S.T., W.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou; Department of Epidemiology and Biostatistics (X.G.), School of Public Health, Guangdong Pharmaceutical University; Department of Neurology and Stroke Center (Y.Z.), The First Affiliated Hospital of Jinan University, Guangzhou; Department of Neurology (Z.L.), The First Affiliated Hospital of Guangxi Medical University, Nanning; and Department of Neurology (W.D.), Meizhou Hospital Affiliated to Sun Yat-sen University, China.
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Cao Q, Guo Z, Du S, Ling H, Song C. Circular RNAs in the pathogenesis of atherosclerosis. Life Sci 2020; 255:117837. [PMID: 32450175 DOI: 10.1016/j.lfs.2020.117837] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/12/2020] [Accepted: 05/20/2020] [Indexed: 12/18/2022]
Abstract
Atherosclerosis is a common cause of cardiovascular and cerebrovascular diseases. Noncoding RNAs (ncRNAs), including microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs) have attracted substantial attention for their roles in various physiological and pathological processes. In recent years, research on the roles of circRNAs in atherosclerosis has progressed rapidly, and they have been implicated in the pathophysiological processes underlying the development of atherosclerosis, including changes in the functions of endothelial cells (ECs), vascular smooth muscle cells (VSMCs), and macrophages. In this review article, we summarize currently available data regarding the role of circRNAs in atherosclerosis and how circRNAs influence the development of atherosclerosis by regulating ECs, VSMCs, and macrophages. We also discuss their potential as diagnostic biomarkers for coronary artery disease.
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Affiliation(s)
- Qidong Cao
- Department of Cardiology, The Second Hospital affiliated to Jilin University, Chang Chun, Jilin, China
| | - Ziyuan Guo
- Department of Cardiology, The Second Hospital affiliated to Jilin University, Chang Chun, Jilin, China
| | - Shuangshuang Du
- Department of Cardiology, The Second Hospital affiliated to Jilin University, Chang Chun, Jilin, China
| | - Hao Ling
- Department of Cardiology, The Second Hospital affiliated to Jilin University, Chang Chun, Jilin, China
| | - Chunli Song
- Department of Cardiology, The Second Hospital affiliated to Jilin University, Chang Chun, Jilin, China.
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19
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Lan Y, Liu H, Liu J, Zhao H, Wang H. The Relationship Between Serum Bilirubin Levels and Peripheral Arterial Disease and Gender Difference in Patients With Hypertension: BEST Study. Angiology 2020; 71:340-348. [PMID: 32013527 DOI: 10.1177/0003319719900734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We evaluated the relationship between serum bilirubin levels and ankle-brachial index (ABI) to determine whether gender affected the relationship between bilirubin levels and peripheral arterial disease (PAD) in patients with hypertension. A total of 543 patients were included in our studies (78 patients with PAD and 465 without PAD). Peripheral arterial disease was defined as ABI <0.90 for either and/or both sides. Serum bilirubin levels were measured with a vanadate oxidation method by using fasting venous blood samples. Serum total bilirubin (TBiL) and direct bilirubin (DBiL) levels were higher in males compared with females (both P < .05). Total bilirubin and DBiL were significantly lower in the PAD group. After adjustment for cardiovascular risk factors, PAD was independently negatively related to TBiL and DBiL, with odds ratios (OR) 0.914 (95% confidence interval [CI]: 0.845-0.990) and 0.748 (95% CI: 0.572-0.977). In addition, there was a relationship between PAD and bilirubin levels (TBiL-OR = 0.884, 95% CI: 0.792-0.985; DBiL-OR = 0.621; 95% CI: 0.424-0.909) only in males but not in females. Future studies should further evaluate whether interventions that increase serum bilirubin levels will have a particular role in PAD prevention in males.
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Affiliation(s)
- Yang Lan
- Vascular Medicine Center, Peking University Shougang Hospital, Beijing, China
| | - Huan Liu
- Vascular Medicine Center, Peking University Shougang Hospital, Beijing, China
| | - Jinbo Liu
- Vascular Medicine Center, Peking University Shougang Hospital, Beijing, China
| | - Hongwei Zhao
- Vascular Medicine Center, Peking University Shougang Hospital, Beijing, China
| | - Hongyu Wang
- Vascular Medicine Center, Peking University Shougang Hospital, Beijing, China
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Ma L, Feng X, Wang K, Song Y, Luo R, Yang C. Dexamethasone promotes mesenchymal stem cell apoptosis and inhibits osteogenesis by disrupting mitochondrial dynamics. FEBS Open Bio 2019; 10:211-220. [PMID: 31788976 PMCID: PMC6996403 DOI: 10.1002/2211-5463.12771] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/07/2019] [Accepted: 11/29/2019] [Indexed: 02/06/2023] Open
Abstract
Long‐term or heavy use of glucocorticoids can cause severe necrosis of the femoral head, but the underlying mechanisms are still unclear. Recent studies have found that mitochondrial dynamics play an important role in femoral head necrosis. Here, we investigated the effect of dexamethasone on the mitochondrial function of mesenchymal stem cells. We observed that high concentrations of dexamethasone (10−6 mol·L−1) decreased cell activity, promoted apoptosis, elevated levels of reactive oxygen species and disrupted mitochondrial dynamics. Furthermore, dexamethasone (10−6 mol·L−1) inhibited osteogenesis of stem cells and promoted adipogenesis. These findings may facilitate greater understanding of the adverse effects of dexamethasone on the femoral head.
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Affiliation(s)
- Liang Ma
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaobo Feng
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Wang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Song
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rongjin Luo
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cao Yang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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21
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Lan Y, Liu H, Liu J, Zhao H, Wang H. Is serum total bilirubin a predictor of prognosis in arteriosclerotic cardiovascular disease? A meta-analysis. Medicine (Baltimore) 2019; 98:e17544. [PMID: 31626117 PMCID: PMC6824698 DOI: 10.1097/md.0000000000017544] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The protective role of serum total bilirubin, a widely recognized antioxidant, has been approved by numerous updating studies. However, regarding the effect of high serum total bilirubin level (STBL) in arteriosclerotic cardiovascular disease (ASCVD) are conflicting in different sources of data. We, therefore, performed this meta-analysis to evaluate the influence of STBL on risk of ASCVD.Four databases were used to identify the literature with a date of search of January, 2019. Finally, a total of 20 studies had been adopted. ASCVD was defined as acute coronary syndrome, stable angina, coronary revascularization, atherosclerotic stroke or transient ischemic attack, and peripheral arterial disease (PAD). All relevant data were collected from studies meeting the inclusion criteria.A total of 20 published studies (323,891 cases) met the inclusion criteria. The meta-analysis revealed that, in studies excluding heterogeneity, STBL was significantly positively related to in-hospital cardiovascular mortality (odds ratio [OR] 2.82, 95% confidence interval [CI] 1.83-4.36, Z = 4.69, P < .001) and major adverse cardiac events (OR 1.88, 95% CI 1.414-2.491, Z = 4.36, P < .001), also negatively associated with prognosis of acute myocardial infarction, pooled hazard ratio (HR) = 0.804 (95% CI 0.700-0.923, Z = 3.08, P = .002). The correlation similarity was also reflected in terms of patients with stroke (HR 0.78, 95% CI 0.70-0.88, Z = 4.24, P = .003). Combined analysis revealed that lower STBL was significantly associated with PAD, pooled OR = 0.91 (95% CI 0.85-0.98, Z = 2.39, P = .017). In general analysis, a conclusion can be drawn, that higher STBL was significantly negative correlated with cardiovascular disease, pooled HR = 0.83 (95% CI 0.73-0.94, Z = 3.02, P = .003).Higher STBL significantly improved the prognosis of ASCVD; furthermore, STBL was an important factor in the long-term prognosis of vascular-related disease prevention and can be used as a predictor in vascular-related disease risk prediction.
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22
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Valerio V, Myasoedova VA, Moschetta D, Porro B, Perrucci GL, Cavalca V, Cavallotti L, Songia P, Poggio P. Impact of Oxidative Stress and Protein S-Glutathionylation in Aortic Valve Sclerosis Patients with Overt Atherosclerosis. J Clin Med 2019; 8:jcm8040552. [PMID: 31022838 PMCID: PMC6517913 DOI: 10.3390/jcm8040552] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/16/2019] [Accepted: 04/18/2019] [Indexed: 12/15/2022] Open
Abstract
Aortic valve sclerosis (AVSc) is characterized by non-uniform thickening of the leaflets without hemodynamic changes. Endothelial dysfunction, also caused by dysregulation of glutathione homeostasis expressed as ratio between its reduced (GSH) and its oxidised form (GSSG), could represent one of the pathogenic triggers of AVSc. We prospectively enrolled 58 patients with overt atherosclerosis and requiring coronary artery bypass grafting (CABG). The incidence of AVSc in the studied population was 50%. The two groups (No-AVSc and AVSc) had similar clinical characteristics. Pre-operatively, AVSc group showed significantly lower GSH/GSSG ratio than No-AVSc group (p = 0.02). Asymmetric dimethylarginine (ADMA) concentration was significantly higher in AVSc patients compared to No-AVSc patients (p < 0.0001). Explanted sclerotic aortic valves presented a significantly increased protein glutathionylation (Pr-SSG) than No-AVSc ones (p = 0.01). In vitro, inhibition of glutathione reductase caused β-actin glutathionylation, activation of histone 2AX, upregulation of α2 smooth muscle actin (ACTA2), downregulation of platelet and endothelial cell adhesion molecule 1 (PECAM1) and cadherin 5 (CDH5). In this study, we showed for the first time that the dysregulation of glutathione homeostasis is associated with AVSc. We found that Pr-SSG is increased in AVSc leaflets and it could lead to EndMT via DNA damage. Further studies are warranted to elucidate the causal role of Pr-SSG in aortic valve degeneration.
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Affiliation(s)
- Vincenza Valerio
- Centro Cardiologico Monzino IRCCS, Unit for the Study of Aortic, Valvular and Coronary Pathologies, 20138 Milan, Italy.
- Università degli Studi di Napoli Federico II, Dipartimento di Medicina Clinica e Chirurgia, 80131 Napoli, Italy.
| | - Veronika A Myasoedova
- Centro Cardiologico Monzino IRCCS, Unit for the Study of Aortic, Valvular and Coronary Pathologies, 20138 Milan, Italy.
| | - Donato Moschetta
- Centro Cardiologico Monzino IRCCS, Unit for the Study of Aortic, Valvular and Coronary Pathologies, 20138 Milan, Italy.
| | - Benedetta Porro
- Centro Cardiologico Monzino IRCCS, Unit of Metabolomics and Cellular Biochemistry of Atherothrombosis, 20138 Milan, Italy.
| | - Gianluca L Perrucci
- Centro Cardiologico Monzino IRCCS, Unit of Vascular Biology and Regenerative Medicine, 20138 Milan, Italy.
| | - Viviana Cavalca
- Centro Cardiologico Monzino IRCCS, Unit of Metabolomics and Cellular Biochemistry of Atherothrombosis, 20138 Milan, Italy.
| | - Laura Cavallotti
- Centro Cardiologico Monzino IRCCS, Cardiac Surgery Unit, 20138 Milan, Italy.
| | - Paola Songia
- Centro Cardiologico Monzino IRCCS, Unit for the Study of Aortic, Valvular and Coronary Pathologies, 20138 Milan, Italy.
| | - Paolo Poggio
- Centro Cardiologico Monzino IRCCS, Unit for the Study of Aortic, Valvular and Coronary Pathologies, 20138 Milan, Italy.
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Mistry RK, Brewer AC. Redox-Dependent Regulation of Sulfur Metabolism in Biomolecules: Implications for Cardiovascular Health. Antioxid Redox Signal 2019; 30:972-991. [PMID: 28661184 DOI: 10.1089/ars.2017.7224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
SIGNIFICANCE Sulfur-containing amino acids are integral to the molecular mechanisms that underlie many aspects of cellular function and homeostasis, facilitated by reversible changes in the oxidation states of sulfur atoms. Sulfur-containing amino acids are metabolically linked by interacting pathways that impact the one-carbon metabolic cycle and generation of methyl groups, the folate cycle, and maintenance of the major cellular redox buffer; glutathione. Dysregulation of these pathways is associated with diverse pathologies, notably of the cardiovascular (CV) system, which are typically characterized by inappropriate plasma levels of sulfur-containing amino acids. Recent Advances: Perhaps not surprisingly, the cellular redox state has emerged as a major regulator of many enzymatic processes within these metabolic cycles. The metabolism of cysteine can also result in the production of hydrogen sulfide (H2S), a signaling molecule whose activity is potentially linked to intracellular levels of both reactive oxygen species (ROS) and molecular oxygen. CRITICAL ISSUES In most cases, the endogenous physiological sources of ROS that might mediate the interlinked metabolic pathways of sulfur-containing biomolecules remain unknown. However, the family of NADPH oxidases, and Nox4 in particular, is emerging as a likely candidate. FUTURE DIRECTIONS This review focuses on the current knowledge of key aspects of sulfur metabolism, which are regulated by redox-based chemical reactions, and the likely intracellular oxidant sources that might mediate this regulation. This knowledge will be important to guide future targeted therapeutic interventions in diverse CV disorders.
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Affiliation(s)
- Rajesh K Mistry
- Department of Cardiology, BHF Centre of Research Excellence, King's College London, London, United Kingdom
| | - Alison C Brewer
- Department of Cardiology, BHF Centre of Research Excellence, King's College London, London, United Kingdom
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24
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Virdis A, Colucci R, Bernardini N, Blandizzi C, Taddei S, Masi S. Microvascular Endothelial Dysfunction in Human Obesity: Role of TNF-α. J Clin Endocrinol Metab 2019; 104:341-348. [PMID: 30165404 DOI: 10.1210/jc.2018-00512] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/21/2018] [Indexed: 02/09/2023]
Abstract
CONTEXT Endothelium guarantees vascular homeostasis by the opposite action of substances by vasodilating/antithrombogenic and vasoconstricting/prothrombotic activities. Obesity is characterized by endothelial dysfunction associated with a condition of vascular low-grade inflammation. EVIDENCE ACQUISITION Analysis of available basic or clinical papers published in peer-reviewed international journals on microcirculation and obesity. EVIDENCE SYNTHESIS Vascular low-grade inflammation, which characterizes obesity, is secondary to abnormal production of proinflammatory cytokines, including TNF-α. TNF-α, generated either in small vessels or within the perivascular adipose tissue (PVAT) of patients with obesity, stimulates reactive oxygen species generation, mainly through NAD(P)H oxidase activation, which in turn reduces nitric oxide (NO) availability. These aspects are highlighted by the insulin resistance status and macronutrient intake that characterize the obesity condition. Oxidant excess has also been proposed as a mechanism whereby TNF-α interferes with the endothelin-1/NO system at the level of small vessels from patients with obesity. CONCLUSIONS In obesity, microvasculature from visceral fat is an important source of low-grade inflammation and oxidative stress that, together with the PVAT, directly contribute to vascular changes, favoring the development and acceleration of the vascular atherothrombotic process in this clinical condition.
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Affiliation(s)
- Agostino Virdis
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Rocchina Colucci
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Nunzia Bernardini
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Taddei
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Masi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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25
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Smolders VF, Zodda E, Quax PHA, Carini M, Barberà JA, Thomson TM, Tura-Ceide O, Cascante M. Metabolic Alterations in Cardiopulmonary Vascular Dysfunction. Front Mol Biosci 2019; 5:120. [PMID: 30723719 PMCID: PMC6349769 DOI: 10.3389/fmolb.2018.00120] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 12/31/2018] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular diseases (CVD) are the leading cause of death worldwide. CVD comprise a range of diseases affecting the functionality of the heart and blood vessels, including acute myocardial infarction (AMI) and pulmonary hypertension (PH). Despite their different causative mechanisms, both AMI and PH involve narrowed or blocked blood vessels, hypoxia, and tissue infarction. The endothelium plays a pivotal role in the development of CVD. Disruption of the normal homeostasis of endothelia, alterations in the blood vessel structure, and abnormal functionality are essential factors in the onset and progression of both AMI and PH. An emerging theory proposes that pathological blood vessel responses and endothelial dysfunction develop as a result of an abnormal endothelial metabolism. It has been suggested that, in CVD, endothelial cell metabolism switches to higher glycolysis, rather than oxidative phosphorylation, as the main source of ATP, a process designated as the Warburg effect. The evidence of these alterations suggests that understanding endothelial metabolism and mitochondrial function may be central to unveiling fundamental mechanisms underlying cardiovascular pathogenesis and to identifying novel critical metabolic biomarkers and therapeutic targets. Here, we review the role of the endothelium in the regulation of vascular homeostasis and we detail key aspects of endothelial cell metabolism. We also describe recent findings concerning metabolic endothelial cell alterations in acute myocardial infarction and pulmonary hypertension, their relationship with disease pathogenesis and we discuss the future potential of pharmacological modulation of cellular metabolism in the treatment of cardiopulmonary vascular dysfunction. Although targeting endothelial cell metabolism is still in its infancy, it is a promising strategy to restore normal endothelial functions and thus forestall or revert the development of CVD in personalized multi-hit interventions at the metabolic level.
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Affiliation(s)
- Valérie Françoise Smolders
- Department of Biochemistry and Molecular Biology and Institute of Biomedicine (IBUB), Faculty of Biology, University of Barcelona, Barcelona, Spain
- Department of Pulmonary Medicine, Hospital Clínic-Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, Netherlands
- Department of Vascular Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Erika Zodda
- Department of Biochemistry and Molecular Biology and Institute of Biomedicine (IBUB), Faculty of Biology, University of Barcelona, Barcelona, Spain
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy
| | - Paul H. A. Quax
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, Netherlands
- Department of Vascular Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - Marina Carini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy
| | - Joan Albert Barberà
- Department of Pulmonary Medicine, Hospital Clínic-Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, Madrid, Spain
| | - Timothy M. Thomson
- Institute for Molecular Biology of Barcelona, National Research Council (IBMB-CSIC), Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Hepáticas y Digestivas, Madrid, Spain
| | - Olga Tura-Ceide
- Department of Pulmonary Medicine, Hospital Clínic-Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, Madrid, Spain
| | - Marta Cascante
- Department of Biochemistry and Molecular Biology and Institute of Biomedicine (IBUB), Faculty of Biology, University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Hepáticas y Digestivas, Madrid, Spain
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26
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Saribal D, Kanber EM, Hocaoglu-Emre FS, Akyolcu MC. Effects of the oxidative stress and genetic changes in varicose vein patients. Phlebology 2018; 34:406-413. [PMID: 30463472 DOI: 10.1177/0268355518814124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background Etiology of the varicose veins is still partly known. It has been proposed that varicose veins formation might be a cause of the oxidative stress and/or cause from genetical reasons. Method The levels of antioxidant defense system enzymes, superoxide dismutase, catalase, glutathione peroxidase, glutathione S-transferase, and an oxidative stress indicator, malondialdehyde, were measured in saphenous vein samples of varicose veins patients. Additionally, genetical polymorphism of glutathione S-transferase theta-1 has been studied. Result In this study, measurements revealed significant increase in catalase and malondialdehyde levels in the patient group, whereas superoxide dismutase and glutathione peroxidase and glutathione S-transferase enzyme activity and comparison of the null mutation frequency in the glutathione S-transferase theta-1 gene did not show a statistically significant difference. Conclusion We propose that the increase in catalase and malondialdehyde activities in our patient group may be related to each other. Increase in catalase levels, an antioxidant enzyme might be a compensatory response to the increase in malondialdehyde levels, an oxidative molecule.
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Affiliation(s)
- Devrim Saribal
- 1 Department of Biophysics, Istanbul University-Cerrahpasa, Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - Eyup Murat Kanber
- 2 Department of Cardiovascular Surgery, Istanbul Education and Research Hospital, Istanbul, Turkey
| | | | - Mehmet C Akyolcu
- 4 Department of Biophysics, Girne American University Medical School, Kyrenia, Cyprus
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27
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Sebastian A, Cordain L, Frassetto L, Banerjee T, Morris RC. Postulating the major environmental condition resulting in the expression of essential hypertension and its associated cardiovascular diseases: Dietary imprudence in daily selection of foods in respect of their potassium and sodium content resulting in oxidative stress-induced dysfunction of the vascular endothelium, vascular smooth muscle, and perivascular tissues. Med Hypotheses 2018; 119:110-119. [PMID: 30122481 DOI: 10.1016/j.mehy.2018.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 07/29/2018] [Accepted: 08/04/2018] [Indexed: 01/05/2023]
Abstract
We hypothesize that the major environmental determinant of the expression of essential hypertension in America and other Westernized countries is dietary imprudence in respect of the consumption of daily combinations of foods containing suboptimal amounts of potassium and blood pressure-lowering phytochemicals, and supraphysiological amounts of sodium. We offer as premise that Americans on average consume suboptimal amounts of potassium and blood pressure-lowering phytochemicals, and physiologically excessive amounts of sodium, and that such dietary imprudence leads to essential hypertension through oxidative stress-induced vascular endothelial and smooth muscle dysfunction. Such dysfunctions restrict nitric oxide bioavailability, impairing endothelial cell-mediated relaxation of the underlying vascular smooth muscle, initiating and maintaining inappropriately increased peripheral and renal vascular resistance. The biochemical steps from oxidative stress to vascular endothelial dysfunction and its pernicious cardiovascular consequences are well established and generally accepted. The unique aspect of our hypothesis resides in the contention that Americans' habitual consumption of foods resulting in suboptimal dietary intake of potassium and supraphysiological intake of sodium result in oxidative stress, the degree of which, we suggest, will correlate with the degree of deviation of potassium and sodium intake from optimal. Because suboptimal intakes of potassium reflect suboptimal intakes of fruits and vegetables, associated contributors to oxidative stress include suboptimal intakes of magnesium, nitrate, polyphenols, carotenoids, and other phytochemical antioxidants for which fruits and vegetables contain abundant amounts. Currently Americans consume potassium-to-sodium in molar ratios of less than or close to 1.0 and the Institute of Medicine (IOM) recommends a molar ratio of 1.2. Ancestral diets to which we are physiologically adapted range from molar ratios of 5.0 to 10.0 or higher. Accordingly, we suggest that the average American is usually afflicted with oxidative stress-induced vascular endothelial dysfunction, and therefore the standards for normal blood pressure and pre-hypertension often reflect a degree of clinically significant hypertension. In this article, we provide support for those contentions, and indicate the findings that the hypothesis predicts.
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Affiliation(s)
- Anthony Sebastian
- Division of Nephrology, Department of Medicine, School of Medicine, University of California, San Francisco, CA, USA.
| | - Loren Cordain
- Department of Health and Exercise Science, Colorado State University, Fort Collins, CO, USA
| | - Lynda Frassetto
- Division of General Internal Medicine, Department of Medicine, University of California, San Francisco, CA, USA
| | - Tanushree Banerjee
- University of California, San Francisco, School of Medicine, Department of Medicine, San Francisco, CA, USA
| | - R Curtis Morris
- Division of Nephrology, Department of Medicine, School of Medicine, University of California, San Francisco, CA, USA
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28
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Cheng KC, Chang WT, Li Y, Cheng YZ, Cheng JT, Chen ZC. GW0742 activates peroxisome proliferator-activated receptor δ to reduce free radicals and alleviate cardiac hypertrophy induced by hyperglycemia in cultured H9c2 cells. J Cell Biochem 2018; 119:9532-9542. [PMID: 30129179 DOI: 10.1002/jcb.27270] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/26/2018] [Indexed: 01/24/2023]
Abstract
Peroxisome proliferator-activated receptor δ (PPARδ), the predominant PPAR subtype in the heart, is known to regulate cardiac function. PPARδ activation may inhibit cardiac hypertrophy in H9c2 cells while the potential mechanism has not been elucidated. Then, H9c2 cells incubated with high glucose to induce hypertrophy were used to investigate using GW0742 to activate PPARδ. The fluorescence assays were applied to determine the changes in cell size, cellular calcium levels, and free radicals. Western blot analyses for hypertrophic signals and assays of messenger RNA (mRNA) levels for hypertrophic biomarkers were performed. In H9c2 cells, GW0742 inhibited cardiac hypertrophy. In addition, increases in cellular calcium and hypertrophic signals, including calcineurin and nuclear factor of activated T-cells, were reduced by GW0742. This reduction was parallel to the decrease in the mRNA levels of biomarkers, such as brain/B-type natriuretic peptides and β-myosin heavy chain. These effects of GW0742 were dose-dependently inhibited by GSK0660 indicating an activation of PPARδ by GW0742 to alleviate cardiac hypertrophy. Moreover, free radicals produced by hyperglycemia were also markedly inhibited by GW0742 and were later reversed by GSK0660. GW0742 promoted the expression of thioredoxin, an antioxidant enzyme. Direct inhibition of reactive oxygen species by GW0742 was also identified in the oxidant potassium bromate stimulated H9c2 cells. Taken together, these findings suggest that PPARδ agonists can inhibit free radicals, resulting in lower cellular calcium for reduction of hypertrophic signaling to alleviate cardiac hypertrophy in H9c2 cells. Therefore, PPARδ activation can be used to develop agent(s) for treating cardiac hypertrophy.
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Affiliation(s)
- Kai-Chun Cheng
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Wei-Ting Chang
- Department of Cardiology, Chi-Mei Medical Center, Tainan, Taiwan
| | - Yingxiao Li
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.,Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan
| | - Yung-Ze Cheng
- Department of Emergency Medicine, Chi-Mei Medical Center, Tainan, Taiwan
| | - Juei-Tang Cheng
- Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan.,Graduate Institute of Medical Science, Chang Jung Christian University, Gueiren, Tainan, Taiwan
| | - Zhih-Cherng Chen
- Department of Cardiology, Chi-Mei Medical Center, Tainan, Taiwan.,Department of Pharmacy, Chia Nan University of Pharmacy & Science, Tainan, Taiwan
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29
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Steinhorn B, Sartoretto JL, Sorrentino A, Romero N, Kalwa H, Abel ED, Michel T. Insulin-dependent metabolic and inotropic responses in the heart are modulated by hydrogen peroxide from NADPH-oxidase isoforms NOX2 and NOX4. Free Radic Biol Med 2017; 113:16-25. [PMID: 28917508 PMCID: PMC5699944 DOI: 10.1016/j.freeradbiomed.2017.09.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/22/2017] [Accepted: 09/09/2017] [Indexed: 01/08/2023]
Abstract
RATIONALE Hydrogen peroxide (H2O2) is a stable reactive oxygen species (ROS) that has long been implicated in insulin signal transduction in adipocytes. However, H2O2's role in mediating insulin's effects on the heart are unknown. OBJECTIVE We investigated the role of H2O2 in activating insulin-dependent changes in cardiac myocyte metabolic and inotropic pathways. The sources of insulin-dependent H2O2 generation were also studied. METHODS AND RESULTS In addition to the canonical role of insulin in modulating cardiac metabolic pathways, we found that insulin also inhibited beta adrenergic-induced increases in cardiac contractility. Catalase and NADPH oxidase (NOX) inhibitors blunted activation of insulin-responsive kinases Akt and mTOR and attenuated beta adrenergic receptor-mediated responses. These insulin responses were lost in a mouse model of type 2 diabetes, suggesting a role for these H2O2-dependent pathways in the diabetic heart. The H2O2-sensitive fluorescent biosensor HyPer revealed rapid increases in cytosolic and caveolar H2O2 concentrations in response to insulin treatment, which were blocked by NOX inhibitors and attenuated in NOX2 KO and NOX4 KO mice. In NOX2 KO cardiac myocytes, insulin-mediated phosphorylation of Akt and mTOR was blocked, while these responses were unaffected in cardiac myocytes from NOX4 KO mice. In contrast, insulin's effects on contractility were lost in cardiac myocytes from NOX4 KO animals but were retained in NOX2 KO mice. CONCLUSIONS These studies identify a proximal point of bifurcation in cardiac insulin signaling through the simultaneous activation of both NOX2 and NOX4. Each NOX isoform generates H2O2 in cardiac myocytes with distinct time courses, with H2O2 derived from NOX2 augmenting Akt-dependent metabolic effects of insulin, while H2O2 from NOX4 blocks beta adrenergic increases in inotropy. These findings suggest that insulin resistance in the diabetic heart may lead to potentially deleterious potentiation of beta adrenergic responses.
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Affiliation(s)
- Benjamin Steinhorn
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States
| | - Juliano L Sartoretto
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States
| | - Andrea Sorrentino
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States
| | - Natalia Romero
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States
| | - Hermann Kalwa
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States
| | - E Dale Abel
- University of Iowa School of Medicine, United States
| | - Thomas Michel
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, United States.
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30
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Computational Fluid Dynamics and Additive Manufacturing to Diagnose and Treat Cardiovascular Disease. Trends Biotechnol 2017; 35:1049-1061. [PMID: 28942268 DOI: 10.1016/j.tibtech.2017.08.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 08/20/2017] [Accepted: 08/23/2017] [Indexed: 11/21/2022]
Abstract
Noninvasive engineering models are now being used for diagnosing and planning the treatment of cardiovascular disease. Techniques in computational modeling and additive manufacturing have matured concurrently, and results from simulations can inform and enable the design and optimization of therapeutic devices and treatment strategies. The emerging synergy between large-scale simulations and 3D printing is having a two-fold benefit: first, 3D printing can be used to validate the complex simulations, and second, the flow models can be used to improve treatment planning for cardiovascular disease. In this review, we summarize and discuss recent methods and findings for leveraging advances in both additive manufacturing and patient-specific computational modeling, with an emphasis on new directions in these fields and remaining open questions.
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Hamza RZ, El-Shenawy NS. Anti-inflammatory and antioxidant role of resveratrol on nicotine-induced lung changes in male rats. Toxicol Rep 2017; 4:399-407. [PMID: 28959665 PMCID: PMC5615151 DOI: 10.1016/j.toxrep.2017.07.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 07/03/2017] [Accepted: 07/14/2017] [Indexed: 01/20/2023] Open
Abstract
Nicotine decreased the antioxidant capacities in male rats. The lung of nicotine-treated rats showed severe congestion of the alveolar lung tissues. Resveratrol exerts its protective effect by alleviating the extent of oxidative status induced by nicotine. Resveratrol improve the enzymatic/non-enzymatic antioxidant defense system in rats treated with combination of nicotine and resveratrol. Resveratrol decreases the pathological changes in animals against the lung damage caused by nicotine.
Male albino rats of Wistar strain were injected intraperitoneally with nicotine or/and resveratrol for 4 weeks. Serum Interleukin-2, Interleukin-6, alpha-fetoprotein and tumor necrosis-alpha, as well as plasma 8-hydroxydeoxyguanosine of nicotine-treated rats were increased significantly. Myeloperoxidase, xanthine oxidase, nitric oxide, lipid peroxidation and total oxidative status of the lung in nicotine-treated rats were increased significantly, which were brought down to normal in resveratrol co-treated group. Endogenous antioxidant status as the activity of superoxide dismutase, catalase, glutathione peroxidase, and glucose-6-phosphate dehydrogenases were found to be decreased significantly in the lung of the nicotine-treated group, which were significantly raised in resveratrol-administered groups. The non-enzymatic antioxidants as total antioxidant and thiol levels were decreased significantly as the effect of nicotine that was effectively enhanced by resveratrol treatment. The lung of nicotine-treated rats showed severe congestion of the alveolar lung tissues with scattered congestion per bronchiolar and perivascular cells, as well as, inflammatory cells were observed. The data suggested that resveratrol exerts its protective effect by modulating the extent of oxidative status and improving the enzymatic/non-enzymatic antioxidant defense system, moreover, decreases the pathological changes in animals against the lung damage caused by nicotine.
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Affiliation(s)
- Reham Z Hamza
- Zoology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt.,Biology Department , Faculty of Science , Taif University, Taif 888, Saudi Arabia
| | - Nahla S El-Shenawy
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
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Hernández-Guerrero C, Hernández-Chávez P, Romo-Palafox I, Blanco-Melo G, Parra-Carriedo A, Pérez-Lizaur A. Genetic Polymorphisms in SOD (rs2070424, rs7880) and CAT (rs7943316, rs1001179) Enzymes Are Associated with Increased Body Fat Percentage and Visceral Fat in an Obese Population from Central Mexico. Arch Med Res 2017; 47:331-339. [PMID: 27751366 DOI: 10.1016/j.arcmed.2016.08.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/22/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND AIMS Oxidative disturbance is an important factor involved in the etiology of comorbidities associated with obesity. Genetic polymorphisms such as SOD1 -251A>G, SOD2 47 C>T, CAT -21A>T and CAT -262 C>T have been described to alter the activity of antioxidant enzymes. The aim of the present work was to analyze the association of the mentioned SNPs with obesity and their relationship with anthropometric and clinical variables in this group. METHODS The study included 416 Mexican women (208 normal weight, NW and 208 subjects with obesity, OB). Dietary intake, anthropometric, biochemical and clinical features were evaluated and then analyzed in function of the genotypes. RESULTS The mutated carriers (GA+GG) of SOD -251 were significantly higher in the OB group (0.24) compared to the NW group (0.08). The other SNPs showed no differences compared with control group. When comparing carrier mutated subjects with obesity vs. wild-type obese participants with the SNPs SOD1 -251, SOD2 47 and CAT -262, the carriers showed a significantly (p <0.05) higher value in body fat percentage. Also, carriers of SOD2 47 and CAT-262 showed significantly higher values (p = 0.002) and (p = 0.01), respectively, when visceral fat was compared between groups. Systolic blood pressure was significantly higher (p = 0.02) in carriers of mutated CAT-21. CONCLUSION SOD1 -251A>G is associated with obesity independent of the presence of diabetes or dyslipidemia. Mutated obese carries of SOD1 -251, SOD2 47 and CAT -262 are associated with a higher distribution of fat in comparison with obese wild-type carriers.
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Affiliation(s)
| | | | - Inés Romo-Palafox
- Departamento de Salud, Universidad Iberoamericana, Mexico City, México
| | | | | | - Ana Pérez-Lizaur
- Dirección de Posgrado, Universidad Iberoamericana, Mexico City, México
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The anti-ageing molecule sirt1 mediates beneficial effects of cardiac rehabilitation. IMMUNITY & AGEING 2017; 14:7. [PMID: 28331525 PMCID: PMC5353800 DOI: 10.1186/s12979-017-0088-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 02/24/2017] [Indexed: 12/28/2022]
Abstract
Background An exercise-based Cardiac Rehabilitation Programme (CRP) is established as adjuvant therapy in heart failure (HF), nevertheless it is underutilized, especially in the elderly. While the functional and hemodynamic effects of CRP are well known, its underlying molecular mechanisms have not been fully clarified. The present study aims to evaluate the effects of a well-structured 4-week CRP in patients with stable HF from a molecular point of view. Results A prospective longitudinal observational study was conducted on patients consecutively admitted to cardiac rehabilitation. In fifty elderly HF patients with preserved ejection fraction (HFpEF), levels of sirtuin 1 (Sirt1) in peripheral blood mononuclear cells (PBMCs) and of its targets, the antioxidants catalase (Cat) and superoxide dismutase (SOD) in serum were measured before (Patients, P) and at the end of the CRP (Rehabilitated Patients, RP), showing a rise of their activities after rehabilitation. Endothelial cells (ECs) were conditioned with serum from P and RP, and oxidative stress was induced using hydrogen peroxide. An increase of Sirt1 and Cat activity was detected in RP-conditioned ECs in both the absence and presence of oxidative stress, together with a decrease of senescence, an effect not observed during Sirt1 and Cat inhibition. Conclusions In addition to the improvement in functional and hemodynamic parameters, a supervised exercise-based CRP increases Sirt1 activity and stimulates a systemic antioxidant defence in elderly HFpEF patients. Moreover, CRP produces antioxidant and anti-senescent effects in human endothelial cells mediated, at least in part, by Sirt1 and its target Cat.
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Mahmoud AM, Germoush MO, Alotaibi MF, Hussein OE. Possible involvement of Nrf2 and PPARγ up-regulation in the protective effect of umbelliferone against cyclophosphamide-induced hepatotoxicity. Biomed Pharmacother 2017; 86:297-306. [DOI: 10.1016/j.biopha.2016.12.047] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/11/2016] [Accepted: 12/11/2016] [Indexed: 12/14/2022] Open
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35
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Abaspour AR, Taghikhani M, Parizade MR, Moohebati M, Ghafoori F, Mehramiz M, Tayefi M, Avan A, Ghalandari M, Ferns GAA, Ghayour-Mobarhan M. Association between Serum Glutathione Peroxidases and Superoxide Dismutases mRNA Level with Coronary Artery Disease. Health (London) 2017. [DOI: 10.4236/health.2017.92017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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36
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A novel role for small molecule glycomimetics in the protection against lipid-induced endothelial dysfunction: Involvement of Akt/eNOS and Nrf2/ARE signaling. Biochim Biophys Acta Gen Subj 2017; 1861:3311-3322. [DOI: 10.1016/j.bbagen.2016.08.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/20/2016] [Accepted: 08/19/2016] [Indexed: 02/07/2023]
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37
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Atorvastatin enhances endothelial cell function in posttransplant poor graft function. Blood 2016; 128:2988-2999. [PMID: 27769957 DOI: 10.1182/blood-2016-03-702803] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 10/14/2016] [Indexed: 12/15/2022] Open
Abstract
Key Points
Dysfunctional BM EPCs were found in subjects with PGF postallotransplant. BM EPCs from subjects with PGF were enhanced by atorvastatin through downregulation of the p38 MAPK pathway.
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38
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Hamur H, Onk OA, Vuruskan E, Duman H, Bakirci EM, Kucuksu Z, Degirmenci H, Buyuklu M, Topal E. Determinants of Chronic Total Occlusion in Patients With Peripheral Arterial Occlusive Disease. Angiology 2016; 68:151-158. [DOI: 10.1177/0003319716641827] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Chronic total occlusion (CTO) is a common finding in 40% of the patients with peripheral arterial disease (PAD). The aim of this study was to investigate the determinants of CTO in patients with PAD. The study included a total of 211 nonanemic patients with PAD. All patients were categorized according to the Fontaine classification. In lower extremity angiography cohorts, CTO− patients were designated as group 1 and CTO+ patients were designated as group 2. Patients with CTO had significantly higher red cell distribution width (RDW), neutrophil–lymphocyte ratio, uric acid, and high-sensitivity C-reactive protein compared to patients without CTO ( P ≤ .001, P = .036, P ≤ .001, and P = .015, respectively). Albumin, total bilirubin, and direct bilirubin were significantly lower in the patients with CTO compared to patients without CTO ( P = .023, P ≤ .001, and P = .049, respectively). Multivariate logistic regression analysis showed that RDW, uric acid, and total bilirubin were independent predictors of CTO in patients with PAD. We demonstrated that increased RDW and uric acid levels and lower total bilirubin values were independently associated with CTO in patients with PAD.
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Affiliation(s)
- Hikmet Hamur
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Oruc Alper Onk
- Department of Cardiovascular Surgery, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Ertan Vuruskan
- Department of Cardiology, Dr. Ersin Arslan State Hospital, Gaziantep, Turkey
| | - Hakan Duman
- Department of Cardiology, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Eftal Murat Bakirci
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Zafer Kucuksu
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Husnu Degirmenci
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Mutlu Buyuklu
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Ergun Topal
- Department of Cardiology, Faculty of Medicine, Erzincan University, Erzincan, Turkey
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Kalapatapu VR, Satterfield L, Brown AT, Hongjiang Chen, Ercal N, Price TO, Jie Gao, Ibrahim K, Moursi MM. The Effects of Toradol on Postoperative Intimal Hyperplasia in a Rat Carotid Endarterectomy Model: Laboratory Research. Vasc Endovascular Surg 2016; 41:402-8. [DOI: 10.1177/1538574407304506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Carotid endarterectomy (CEA) and more recently carotid artery stenting are the treatments of choice for atherosclerotic disease of the extracranial carotid arteries; however, early restenosis caused by neointimal hyperplasia confounds surgical therapy. Oxidative stress has been implicated in the progression of intimal hyperplasia. The authors hypothesized that ketorolac tromethamine (Toradol), a nonsteroidal antiinflammatory drug that is a potent cyclooxygenase inhibitor, would decrease oxidative stress and thereby reduce intimal hyperplasia in a rat CEA model. Twenty-nine male Sprague-Dawley rats underwent CEA and were divided into 3 treatment groups as follows: (1) control (placebo), (2) 7.5 mg/kg Toradol, and (3) 10 mg/kg Toradol. Toradol treatment began 2 days before CEA and continued for 2 weeks. Two weeks after endarterectomy, carotid arteries were fixed, harvested, and examined for platelet activity (platelet reactive units), oxidative stress (malondialdehyde and glutathione), and intimal hyperplasia (measured as percentage of luminal stenosis). Platelet activity, malondialdehyde and glutathione, and intimal hyperplasia were all significantly lowered in both 7.5- and 10-mg/kg doses of Toradol versus control. Toradol given daily beginning 2 days before CEA and ending 2 weeks after the procedure was effective at significantly reducing platelet activity, oxidative stress, and intimal hyperplasia development in the rat without any increase in bleeding. Although the mechanism of action of this reduction is not completely understood, one possible explanation may be through the inhibition of reactive oxygen species production.
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Affiliation(s)
- Venkat R. Kalapatapu
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Leighton Satterfield
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Aliza T. Brown
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Hongjiang Chen
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Nuran Ercal
- University of Missouri-Rolla Rolla, Missouri
| | | | - Jie Gao
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Khalil Ibrahim
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas
| | - Mohammed M. Moursi
- University of Arkansas for Medical Sciences and Central Arkansas Veterans Healthcare System Little Rock, Arkansas,
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Chang CC, Hsu CY, Huang PH, Chiang CH, Huang SS, Leu HB, Huang CC, Chen JW, Lin SJ. Association of Serum Bilirubin with SYNTAX Score and Future Cardiovascular Events in Patients Undergoing Coronary Intervention. ACTA CARDIOLOGICA SINICA 2016; 32:412-9. [PMID: 27471354 DOI: 10.6515/acs20150708c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Bilirubin has emerged as an important endogenous antioxidant molecule, and increasing evidence shows that bilirubin may protect against atherosclerosis. The SYNTAX score has been developed to assess the severity and complexity of coronary artery disease. The aim of this study was to evaluate whether serum bilirubin levels are associated with SYNTAX scores and whether they could be used to predict future cardiovascular events in patients undergoing coronary intervention. METHODS Serum bilirubin levels and other blood parameters in patients with at least 12-h fasting states were determined. The primary endpoint was any composite cardiovascular event within 1 year, including death, nonfatal myocardial infarction, and target-vessel revascularization. RESULTS In total, 250 consecutive patients with stable coronary artery disease (mean age 70 ± 13) who had received coronary intervention were enrolled. All study subjects were divided into two groups: group 1 was defined as high SYNTAX score (> 22), and group 2 was defined as low SYNTAX score (≤ 22). Total bilirubin levels were significantly lower in the high SYNTAX score group than in the low SYNTAX score group (0.51 ± 0.22 vs. 0.72 ± 0.29 mg/dl, p < 0.001). By multivariate analysis, serum total bilirubin levels were identified as an independent predictor for high SYNTAX score (adjusted odds ratio: 0.28, 95% confidence interval 0.04-0.42; p = 0.004). Use of the Kaplan-Meier analysis demonstrated a significant difference in 1-year cardiovascular events between high (> 0.8 mg/dl), medium (> 0.5, ≤ 0.8 mg/dl), and low (≤ 0.5 mg/dl) bilirubin levels (log-rank test p = 0.011). CONCLUSIONS Serum bilirubin level is associated with SYNTAX score and predicts future cardiovascular events in patients undergoing coronary intervention.
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Affiliation(s)
- Chun-Chin Chang
- Division of Cardiology, Department of Medicine; ; Cardiovascular Research Center
| | - Chien-Yi Hsu
- Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei; ; Department of Medicine, Taipei Veterans General Hospital Yuli Branch, Hualien, Taiwan
| | - Po-Hsun Huang
- Division of Cardiology, Department of Medicine; ; Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei
| | - Chia-Hung Chiang
- Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei
| | - Shao-Sung Huang
- Division of Cardiology, Department of Medicine; ; Healthcare and Management Center, Taipei Veterans General Hospital; ; Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei
| | - Hsin-Bang Leu
- Division of Cardiology, Department of Medicine; ; Healthcare and Management Center, Taipei Veterans General Hospital; ; Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei
| | - Chin-Chou Huang
- Division of Cardiology, Department of Medicine; ; Department of Medical Education; ; Cardiovascular Research Center; ; Institute of Pharmacology
| | - Jaw-Wen Chen
- Division of Cardiology, Department of Medicine; ; Division of Clinical Research; ; Cardiovascular Research Center; ; Institute of Pharmacology
| | - Shing-Jong Lin
- Division of Cardiology, Department of Medicine; ; Department of Medical Research; ; Cardiovascular Research Center; ; Institute of Clinical Medicine, National Yang-Ming University, Taipei
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41
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Different influences of extracellular and intracellular superoxide on relaxation through the NO/sGC/cGMP pathway in isolated rat iliac arteries. J Cardiovasc Pharmacol 2016; 65:160-7. [PMID: 25329747 DOI: 10.1097/fjc.0000000000000173] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Superoxide production is increased in diseased blood vessels, which is considered to lead to impairment of the nitric oxide (NO)/soluble guanylate cyclase (sGC)/cGMP pathway. To investigate the respective influence of extracellular and intracellular superoxide on vascular function through the NO/sGC/cGMP pathway, mechanical responses of rat external iliac arteries without endothelium were studied under exposure to a superoxide-generating agent, pyrogallol, or menadione. Exposure to pyrogallol impaired the relaxation induced by acidified NaNO2 (exogenous NO) but not that by nitroglycerin (organic nitrate), BAY 41-2272 (sGC stimulator), BAY 60-2770 (sGC activator), or 8-Br-cGMP (cGMP analog). Superoxide dismutase (SOD) and tempol restored the impaired relaxation by acidified NaNO2. Superoxide production in the bathing solution, but not in artery segments, was significantly increased by exposure to pyrogallol, which was abolished in the presence of SOD or tempol. However, exposure to menadione impaired the relaxant response to acidified NaNO2, nitroglycerin, or BAY 41-2272, whereas it augmented that to BAY 60-2770. Also, this exposure had no effect on the 8-Br-cGMP-induced vasorelxation. Superoxide production in artery segments was dramatically enhanced by exposure to menadione, whereas that in the bathing solution was not affected. This increase in vascular superoxide production was normalized by tempol but not by SOD. These findings suggest that extracellular superoxide reacts with NO only outside the cell, whereas intracellular superoxide not only scavenges NO inside the cell but also shifts the sGC redox equilibrium.
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42
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Li J, Ruzhi Deng, Hua X, Zhang L, Lu F, Coursey TG, Pflugfelder SC, Li DQ. Blueberry Component Pterostilbene Protects Corneal Epithelial Cells from Inflammation via Anti-oxidative Pathway. Sci Rep 2016; 6:19408. [PMID: 26762881 PMCID: PMC4725955 DOI: 10.1038/srep19408] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 12/07/2015] [Indexed: 12/12/2022] Open
Abstract
Blueberries have been recognized to possess protective properties from inflammation and various diseases, but not for eye and ocular disorders. This study explores potential benefits of pterostilbene (PS), a natural component of blueberries, in preventing ocular surface inflammation using an in vitro culture model of human corneal epithelial cells (HCECs) exposed to hyperosmotic medium at 450 mOsM. Gene expression was detected by RT-qPCR, and protein production or activity was determined by ELISA, zymography, Western blotting and immunofluorescent staining. Reactive oxygen species (ROS) production was measured using DCFDA kit. The addition of PS significantly reduced the expression of pro-inflammatory mediators, TNF-α, IL-1 β, IL-6, MMP-2 and MMP-9 in HCECs exposed to hyperosmotic medium. Pre-treatment with PS (5 to 20 μM) suppressed ROS overproduction in a dose-dependent manner. Additionally, PS significantly decreased the levels of oxidative damage biomarkers, malondialdehyde (MDA), 4-hydroxynonenal (4-HNE), aconitase-2 and 8-hydroxydeoxyguanosine (8-OHdG). Importantly, PS was found to rebalance homeostasis between oxygenases and anti-oxidative enzymes by decreasing cyclooxygenase 2 (COX2) expression and restoring the activity of antioxidant enzymes, superoxide dismutase 1 (SOD1) and peroxiredoxin-4 (PRDX4) during hyperosmotic stress. Our findings demonstrate that PS protects human cornea from hyperosmolarity-induced inflammation and oxidative stress, suggesting protective effects of PS on dry eye.
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Affiliation(s)
- Jin Li
- Zhejiang Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, China.,Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - Ruzhi Deng
- Zhejiang Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, China.,Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - Xia Hua
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA.,Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Lili Zhang
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - Fan Lu
- Zhejiang Eye Hospital, School of Optometry and Ophthalmology, Wenzhou Medical University, Wenzhou, China
| | - Terry G Coursey
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - Stephen C Pflugfelder
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
| | - De-Quan Li
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA
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43
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Murray TVA, Dong X, Sawyer GJ, Caldwell A, Halket J, Sherwood R, Quaglia A, Dew T, Anilkumar N, Burr S, Mistry RK, Martin D, Schröder K, Brandes RP, Hughes RD, Shah AM, Brewer AC. NADPH oxidase 4 regulates homocysteine metabolism and protects against acetaminophen-induced liver damage in mice. Free Radic Biol Med 2015; 89:918-30. [PMID: 26472193 PMCID: PMC4698376 DOI: 10.1016/j.freeradbiomed.2015.09.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/02/2015] [Accepted: 09/04/2015] [Indexed: 01/08/2023]
Abstract
Glutathione is the major intracellular redox buffer in the liver and is critical for hepatic detoxification of xenobiotics and other environmental toxins. Hepatic glutathione is also a major systemic store for other organs and thus impacts on pathologies such as Alzheimer's disease, Sickle Cell Anaemia and chronic diseases associated with aging. Glutathione levels are determined in part by the availability of cysteine, generated from homocysteine through the transsulfuration pathway. The partitioning of homocysteine between remethylation and transsulfuration pathways is known to be subject to redox-dependent regulation, but the underlying mechanisms are not known. An association between plasma Hcy and a single nucleotide polymorphism within the NADPH oxidase 4 locus led us to investigate the involvement of this reactive oxygen species- generating enzyme in homocysteine metabolism. Here we demonstrate that NADPH oxidase 4 ablation in mice results in increased flux of homocysteine through the betaine-dependent remethylation pathway to methionine, catalysed by betaine-homocysteine-methyltransferase within the liver. As a consequence NADPH oxidase 4-null mice display significantly lowered plasma homocysteine and the flux of homocysteine through the transsulfuration pathway is reduced, resulting in lower hepatic cysteine and glutathione levels. Mice deficient in NADPH oxidase 4 had markedly increased susceptibility to acetaminophen-induced hepatic injury which could be corrected by administration of N-acetyl cysteine. We thus conclude that under physiological conditions, NADPH oxidase 4-derived reactive oxygen species is a regulator of the partitioning of the metabolic flux of homocysteine, which impacts upon hepatic cysteine and glutathione levels and thereby upon defence against environmental toxins.
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Affiliation(s)
- Thomas V A Murray
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Xuebin Dong
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Greta J Sawyer
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Anna Caldwell
- Mass Spectrometry Facility, King's College London, FWB, 150 Stamford Street London E1 9NH
| | - John Halket
- Mass Spectrometry Facility, King's College London, FWB, 150 Stamford Street London E1 9NH
| | - Roy Sherwood
- NHS Foundation Trust, King's College Hospital, Denmark Hill, London SE5 9RS
| | - Alberto Quaglia
- Institute of Liver Studies, King's College London, Denmark Hill, London SE5 9RS
| | - Tracy Dew
- NHS Foundation Trust, King's College Hospital, Denmark Hill, London SE5 9RS
| | - Narayana Anilkumar
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Simon Burr
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Rajesh K Mistry
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Daniel Martin
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Katrin Schröder
- Institut für Kardiovaskuläre Physiologie, Goethe-Universität, 60596 Frankfurt am Main, Germany
| | - Ralf P Brandes
- Institut für Kardiovaskuläre Physiologie, Goethe-Universität, 60596 Frankfurt am Main, Germany
| | - Robin D Hughes
- Institute of Liver Studies, King's College London, Denmark Hill, London SE5 9RS
| | - Ajay M Shah
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD
| | - Alison C Brewer
- Cardiovascular Division, King's College London, 125 Coldharbour Lane, London E5 0AD.
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44
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Joly P, Garnier N, Kebaili K, Renoux C, Dony A, Cheikh N, Renard C, Ceraulo A, Cuzzubbo D, Pondarré C, Martin C, Pialoux V, Francina A, Bertrand Y, Connes P. G6PD deficiency and absence of α-thalassemia increase the risk for cerebral vasculopathy in children with sickle cell anemia. Eur J Haematol 2015; 96:404-8. [PMID: 26072930 DOI: 10.1111/ejh.12607] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2015] [Indexed: 02/04/2023]
Abstract
The aim of this study was to test the association between hematological/genetic factors and cerebral vasculopathy in children with sickle cell anemia (SCA). A group with cerebral vasculopathy (VASC) was composed of children who had stroke (n = 6), silent infarct (n = 11), or an abnormal transcranial Doppler (n = 5). Eighty-four patients had neither positive history of stroke or silent infarct, nor abnormal transcranial Doppler (NORM group). An intermediate group (COND; n = 15) was composed of SCA children with a conditional transcranial Doppler. Biological analyses were performed on samples obtained at steady state and before the beginning of any chronic treatment. The comparisons of the three groups demonstrated a protective effect of α-thalassemia against cerebral vasculopathy through its effects on hemoglobin and reticulocyte levels. Moreover, we observed higher frequency of G6PD deficiency in the VASC group compared with the other groups. Our study confirms the key role of α-thalassemia and G6PD status in the pathophysiology of cerebral vasculopathy in SCA children.
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Affiliation(s)
- Philippe Joly
- Unité de Pathologie Moléculaire du Globule Rouge, Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France.,Laboratoire CRIS EA 647, Section "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Lyon, France
| | - Nathalie Garnier
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Kamila Kebaili
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Céline Renoux
- Unité de Pathologie Moléculaire du Globule Rouge, Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France.,Laboratoire CRIS EA 647, Section "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Lyon, France
| | - Arthur Dony
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Nathalie Cheikh
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Cécile Renard
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Antony Ceraulo
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Daniela Cuzzubbo
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Corinne Pondarré
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France.,Centre Hospitalier Intercommunal de Créteil, Université Paris Est Créteil, Créteil, France
| | - Cyril Martin
- Laboratoire CRIS EA 647, Section "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Lyon, France
| | - Vincent Pialoux
- Laboratoire CRIS EA 647, Section "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Lyon, France.,Institut Universitaire de France (IUF), Paris, France
| | - Alain Francina
- Unité de Pathologie Moléculaire du Globule Rouge, Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Yves Bertrand
- Institut d'Hématologie et d'Oncologie Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Philippe Connes
- Laboratoire CRIS EA 647, Section "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Lyon, France.,Institut Universitaire de France (IUF), Paris, France
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Lammertyn L, Mels CMC, Pieters M, Schutte AE, Schutte R. Ethnic-specific relationships between haemostatic and oxidative stress markers in black and white South Africans: The SABPA study. Clin Exp Hypertens 2015; 37:511-7. [PMID: 25919704 DOI: 10.3109/10641963.2015.1013123] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Haemostatic- and oxidative stress markers are associated with increased cardiovascular risk. In the black population, evidence exists that both an imbalance in the haemostatic system and oxidative stress link with the development of hypertension. However, it is unclear whether these two risk components function independently or are related, specifically in the black population, who is known to have a high prevalence of stroke. We aimed to investigate associations between the haemostatic system and oxidative stress in black and white South Africans. We performed a cross-sectional study including 181 black (mean age, 44; 51.4% women) and 209 white (mean age, 45; 51.7% women) teachers. Several markers of the haemostatic- (von Willebrand factor, fibrinogen, plasminogen activator inhibitor-1, d-dimer and clot lysis time) and oxidant-antioxidant (serum peroxides, total glutathione, glutathione peroxidase- and glutathione reductase activities) systems were measured. Along with a worsened cardiovascular profile, the black group had higher haemostatic-, inflammation- and oxidative stress markers as well as decreased glutathione peroxidase activity. In multiple regression analyses, fibrinogen was positively associated with serum peroxides (p < 0.001) in both ethnic groups. In the black population, we found negative associations of von Willebrand factor and clot lysis time with glutathione peroxidase activity (p ≤ 0.008), while a positive association existed between clot lysis time and serum peroxides (p = 0.011) in the white population. We conclude that in the black population, decreased GPx activity accompanies an altered haemostatic profile, while in the white population associations may suggest that serum peroxides impair fibrin clot lysis.
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Affiliation(s)
- Leandi Lammertyn
- a Hypertension in Africa Research Team (HART), North-West University , Potchefstroom , South Africa
| | - Catharina M C Mels
- a Hypertension in Africa Research Team (HART), North-West University , Potchefstroom , South Africa
| | - Marlien Pieters
- b Centre of Excellence for Nutrition (CEN), North-West University , Potchefstroom , South Africa , and
| | - Aletta E Schutte
- a Hypertension in Africa Research Team (HART), North-West University , Potchefstroom , South Africa .,c MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University , Potchefstroom , South Africa
| | - Rudolph Schutte
- a Hypertension in Africa Research Team (HART), North-West University , Potchefstroom , South Africa .,c MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University , Potchefstroom , South Africa
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Tang Y, Jacobi A, Vater C, Zou X, Stiehler M. Salvianolic acid B protects human endothelial progenitor cells against oxidative stress-mediated dysfunction by modulating Akt/mTOR/4EBP1, p38 MAPK/ATF2, and ERK1/2 signaling pathways. Biochem Pharmacol 2014; 90:34-49. [PMID: 24780446 DOI: 10.1016/j.bcp.2014.04.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/14/2014] [Accepted: 04/14/2014] [Indexed: 12/01/2022]
Abstract
The vascular endothelium is specifically sensitive to oxidative stress, and this is one of the mechanisms that causes widespread endothelial dysfunction in most cardiovascular diseases and disorders. Protection against reactive oxygen species (ROS)-mediated oxidative damage via antioxidant mechanisms is essential for tissue maintenance and shows therapeutic potential for patients suffering from cardiovascular and metabolic disorders. Salvianolic acid B (SalB), a natural bioactive component known from Traditional Chinese Medicine, has been reported to exert cellular protection in various types of cells. However, the underlying mechanisms involved are not fully understood. Here, we showed that SalB significantly promoted the migratory and tube formation abilities of human bone marrow derived-endothelial progenitor cells (BM-EPCs) in vitro, and substantially abrogated hydrogen peroxide (H2O2)-induced cell damage. SalB down-regulated Nox4 and eNOS, as well as nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase expression upon H2O2 induction that in turn prevents oxidative-induced endothelial dysfunction. Moreover, SalB suppressed the Bax/Bcl-xL ratio and caspase-3 activation after H2O2 induction. Furthermore, our results provide mechanistic evidence that activation of the mTOR/p70S6K/4EBP1 pathways is required for both SalB-mediated angiogenic and protective effects against oxidative stress-induced cell injury in BM-EPCs. Suppression of MKK3/6-p38 MAPK-ATF2 and ERK1/2 signaling pathways by SalB significantly protected BM-EPCs against cell injury caused by oxidative stress via reduction of intracellular ROS levels and apoptosis. Taken together, by providing a mechanistic insight into the modulation of redox states in BM-EPCs by SalB, we suggest that SalB has a strong potential of being a new proangiogenic and cytoprotective therapeutic agent with applications in the field of endothelial injury-mediated vascular diseases.
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Affiliation(s)
- Yubo Tang
- Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Centre for Orthopaedics and Trauma Surgery, University Hospital Carl Gustav Carus at Technische Universität Dresden, Dresden, Germany; Department of Pharmacy, the First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, China.
| | - Angela Jacobi
- Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Centre for Orthopaedics and Trauma Surgery, University Hospital Carl Gustav Carus at Technische Universität Dresden, Dresden, Germany.
| | - Corina Vater
- Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Centre for Orthopaedics and Trauma Surgery, University Hospital Carl Gustav Carus at Technische Universität Dresden, Dresden, Germany.
| | - Xuenong Zou
- Department of Spinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, China.
| | - Maik Stiehler
- Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Centre for Orthopaedics and Trauma Surgery, University Hospital Carl Gustav Carus at Technische Universität Dresden, Dresden, Germany.
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Islamovic S, Galic B, Milos M. A study of the inhibition of catalase by dipotassium trioxohydroxytetrafluorotriborate K2[B3O3F4OH]. J Enzyme Inhib Med Chem 2014; 29:744-8. [DOI: 10.3109/14756366.2013.848203] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Safija Islamovic
- Department of Chemistry, Faculty of Science, University of Sarajevo
SarajevoBosnia and Herzegovina
| | - Borivoj Galic
- Department of Chemistry, Faculty of Science, University of Sarajevo
SarajevoBosnia and Herzegovina
| | - Mladen Milos
- Department of Biochemistry, Faculty of Chemistry and Technology, University of Split
SplitCroatia
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Banerjee M, Vats P. Reactive metabolites and antioxidant gene polymorphisms in Type 2 diabetes mellitus. Redox Biol 2013; 2:170-7. [PMID: 25460725 PMCID: PMC4297945 DOI: 10.1016/j.redox.2013.12.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 11/27/2013] [Accepted: 12/04/2013] [Indexed: 02/07/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM), by definition is a heterogeneous, multifactorial, polygenic syndrome which results from insulin receptor dysfunction. It is an outcome of oxidative stress caused by interactions of reactive metabolites (RMs) interactions with lipids, proteins and other mechanisms of human body. Production of RMs mainly superoxide (O2−) has been found in a variety of predominating cellular enzyme systems including NAD(P)H oxidase, xanthine oxidase (XO), cyclooxygenase (COX), uncoupled endothelial nitric oxide synthase (eNOS) and myeloperoxidase (MPO). The four main RM related molecular mechanisms are: increased polyol pathway flux; increased advanced glycation end-product (AGE) formation; activation of protein kinase C (PKC) isoforms and increased hexosamine pathway flux which have been implicated in glucose-mediated vascular damage. Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST), nitric oxide synthase (NOS) are antioxidant enzymes involved in scavenging RMs in normal individuals. Functional polymorphisms of these antioxidant enzymes have been reported to be involved in pathogenesis of T2DM individuals. The low levels of antioxidant enzymes or their non-functionality results in excessive RMs which initiate stress related pathways thereby leading to insulin resistance and T2DM. An attempt has been made to review the role of RMs and antioxidant enzymes in oxidative stress resulting in T2DM. Four main molecular mechanisms are implicated in glucose-mediated vascular damage. Impaired antioxidant defense contributes to T2DM and related complications. SNPs in antioxidant enzymes are associated with pathogenesis of type 2 diabetes. Genotyping of gene variants in populations will help identify individuals at risk.
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Affiliation(s)
- Monisha Banerjee
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow 226007, India.
| | - Pushpank Vats
- Molecular & Human Genetics Laboratory, Department of Zoology, University of Lucknow, Lucknow 226007, India.
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Serum Bilirubin Level and Aortic Intima–Media Thickness in Patients Without Clinical Manifestation of Atherosclerotic Cardiovascular Disease. Angiology 2013; 65:308-12. [DOI: 10.1177/0003319713507627] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We investigated the association between serum bilirubin level and thoracic aortic intima–media thickness (IMT). The study population consisted of 417 patients without coronary artery disease, who underwent transesophageal echocardiography examination for various indications. The highest aortic IMT values were observed in the bilirubinlow group compared with the bilirubinhigh group ( P < .001). Serum bilirubin level was associated with high-density lipoprotein cholesterol level ( r = .162, P = .001), high-sensitivity C-reactive protein (hsCRP; r = −.265, P < .001), and aortic IMT ( r = −.551, P < .001) in bivariate analysis. Multivariate linear regression analysis showed that serum bilirubin level was independently and negatively associated with hsCRP (β = −.095, P = .028) and aortic IMT (β = −.513, P < .001). Serum bilirubin level may be an independent predictor of the extent of subclinical aortic atherosclerosis assessed by thoracic aortic IMT.
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50
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Sena CM, Pereira AM, Seiça R. Endothelial dysfunction - a major mediator of diabetic vascular disease. Biochim Biophys Acta Mol Basis Dis 2013; 1832:2216-31. [PMID: 23994612 DOI: 10.1016/j.bbadis.2013.08.006] [Citation(s) in RCA: 525] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 07/31/2013] [Accepted: 08/20/2013] [Indexed: 12/18/2022]
Abstract
The vascular endothelium is a multifunctional organ and is critically involved in modulating vascular tone and structure. Endothelial cells produce a wide range of factors that also regulate cellular adhesion, thromboresistance, smooth muscle cell proliferation, and vessel wall inflammation. Thus, endothelial function is important for the homeostasis of the body and its dysfunction is associated with several pathophysiological conditions, including atherosclerosis, hypertension and diabetes. Patients with diabetes invariably show an impairment of endothelium-dependent vasodilation. Therefore, understanding and treating endothelial dysfunction is a major focus in the prevention of vascular complications associated with all forms of diabetes mellitus. The mechanisms of endothelial dysfunction in diabetes may point to new management strategies for the prevention of cardiovascular disease in diabetes. This review will focus on the mechanisms and therapeutics that specifically target endothelial dysfunction in the context of a diabetic setting. Mechanisms including altered glucose metabolism, impaired insulin signaling, low-grade inflammatory state, and increased reactive oxygen species generation will be discussed. The importance of developing new pharmacological approaches that upregulate endothelium-derived nitric oxide synthesis and target key vascular ROS-producing enzymes will be highlighted and new strategies that might prove clinically relevant in preventing the development and/or retarding the progression of diabetes associated vascular complications.
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Affiliation(s)
- Cristina M Sena
- Institute of Physiology, Faculty of Medicine, University of Coimbra, Portugal; IBILI, Faculty of Medicine, University of Coimbra, Portugal.
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