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Wei ZX, Cai XX, Fei YD, Wang Q, Hu XL, Li C, Hou JW, Yang YL, Chen TZ, Xu XL, Wang YP, Li YG. Zbtb16 increases susceptibility of atrial fibrillation in type 2 diabetic mice via Txnip-Trx2 signaling. Cell Mol Life Sci 2024; 81:88. [PMID: 38349408 PMCID: PMC10864461 DOI: 10.1007/s00018-024-05125-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 12/10/2023] [Accepted: 01/12/2024] [Indexed: 02/15/2024]
Abstract
Atrial fibrillation (AF) is the most prevalent sustained cardiac arrhythmia, and recent epidemiological studies suggested type 2 diabetes mellitus (T2DM) is an independent risk factor for the development of AF. Zinc finger and BTB (broad-complex, tram-track and bric-a-brac) domain containing 16 (Zbtb16) serve as transcriptional factors to regulate many biological processes. However, the potential effects of Zbtb16 in AF under T2DM condition remain unclear. Here, we reported that db/db mice displayed higher AF vulnerability and Zbtb16 was identified as the most significantly enriched gene by RNA sequencing (RNA-seq) analysis in atrium. In addition, thioredoxin interacting protein (Txnip) was distinguished as the key downstream gene of Zbtb16 by Cleavage Under Targets and Tagmentation (CUT&Tag) assay. Mechanistically, increased Txnip combined with thioredoxin 2 (Trx2) in mitochondrion induced excess reactive oxygen species (ROS) release, calcium/calmodulin-dependent protein kinase II (CaMKII) overactivation, and spontaneous Ca2+ waves (SCWs) occurrence, which could be inhibited through atrial-specific knockdown (KD) of Zbtb16 or Txnip by adeno-associated virus 9 (AAV9) or Mito-TEMPO treatment. High glucose (HG)-treated HL-1 cells were used to mimic the setting of diabetic in vitro. Zbtb16-Txnip-Trx2 signaling-induced excess ROS release and CaMKII activation were also verified in HL-1 cells under HG condition. Furthermore, atrial-specific Zbtb16 or Txnip-KD reduced incidence and duration of AF in db/db mice. Altogether, we demonstrated that interrupting Zbtb16-Txnip-Trx2 signaling in atrium could decrease AF susceptibility via reducing ROS release and CaMKII activation in the setting of T2DM.
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Affiliation(s)
- Zhi-Xing Wei
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xing-Xing Cai
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yu-Dong Fei
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Qian Wang
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiao-Liang Hu
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Cheng Li
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Jian-Wen Hou
- Department of Cardiology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yu-Li Yang
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Tai-Zhong Chen
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Xiao-Lei Xu
- Department of Biochemistry and Molecular Biology, Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Yue-Peng Wang
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Yi-Gang Li
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.
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Jiang B, Zhou X, Yang T, Wang L, Feng L, Wang Z, Xu J, Jing W, Wang T, Su H, Yang G, Zhang Z. The role of autophagy in cardiovascular disease: Cross-interference of signaling pathways and underlying therapeutic targets. Front Cardiovasc Med 2023; 10:1088575. [PMID: 37063954 PMCID: PMC10090687 DOI: 10.3389/fcvm.2023.1088575] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/13/2023] [Indexed: 03/31/2023] Open
Abstract
Autophagy is a conserved lysosomal pathway for the degradation of cytoplasmic proteins and organelles, which realizes the metabolic needs of cells and the renewal of organelles. Autophagy-related genes (ATGs) are the main molecular mechanisms controlling autophagy, and their functions can coordinate the whole autophagic process. Autophagy can also play a role in cardiovascular disease through several key signaling pathways, including PI3K/Akt/mTOR, IGF/EGF, AMPK/mTOR, MAPKs, p53, Nrf2/p62, Wnt/β-catenin and NF-κB pathways. In this paper, we reviewed the signaling pathway of cross-interference between autophagy and cardiovascular diseases, and analyzed the development status of novel cardiovascular disease treatment by targeting the core molecular mechanism of autophagy as well as the critical signaling pathway. Induction or inhibition of autophagy through molecular mechanisms and signaling pathways can provide therapeutic benefits for patients. Meanwhile, we hope to provide a unique insight into cardiovascular treatment strategies by understanding the molecular mechanism and signaling pathway of crosstalk between autophagy and cardiovascular diseases.
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Affiliation(s)
- Bing Jiang
- Department of Integrated Chinese and Western Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Xuan Zhou
- Department of First Clinical Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Tao Yang
- Department of Basic Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Linlin Wang
- Department of First Clinical Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Longfei Feng
- Department of Basic Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Zheng Wang
- Department of Integrated Chinese and Western Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Jin Xu
- Department of First Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Weiyao Jing
- Department of Acupuncture-Moxibustion and Tuina, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Tao Wang
- Research Center for Translational Medicine, Gansu Province Academic Institute for Medical Research, Gansu Provincial Cancer Hospital, Lanzhou, China
| | - Haixiang Su
- Research Center for Translational Medicine, Gansu Province Academic Institute for Medical Research, Gansu Provincial Cancer Hospital, Lanzhou, China
| | - GuoWei Yang
- Center for Heart, First Hospital of Lanzhou University, Lanzhou, China
| | - Zheng Zhang
- Department of Integrated Chinese and Western Medicine, Gansu University of Traditional Chinese Medicine, Lanzhou, China
- Center for Heart, First Hospital of Lanzhou University, Lanzhou, China
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3
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Cho E, Jung S, Kim J, Ko KS. The Relationship between Prohibitin 1 Expression, Hepatotoxicity Induced by Acetaminophen, and Hepatoprotection by S-Adenosylmethionine in AML12 Cells. J Microbiol Biotechnol 2022; 32:1447-1453. [PMID: 36310362 PMCID: PMC9720076 DOI: 10.4014/jmb.2207.07035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/29/2022]
Abstract
Prohibitin 1 (Phb1) is a pleiotropic protein, located mainly in the mitochondrial inner membrane and involved in the regulation of cell proliferation and the stabilization of mitochondrial protein. Acetaminophen (APAP) is one of the most commonly used over-the-counter analgesics worldwide. However, at high dose, the accumulation of N-acetyl-p-benzoquinone imine (NAPQI) can lead to APAP-induced hepatotoxicity. In this study, we sought to understand the regulation of mRNA expression in relation to APAP and GSH metabolism by Phb1 in normal mouse AML12 hepatocytes. We used two different Phb1 silencing levels: high-efficiency (HE, >90%) and low-efficiency (LE, 50-60%). In addition, the siRNA-transfected cells were further pretreated with 0.5 mM of S-adenosylmethionine (SAMe) for 24 h before treatment with APAP at different doses (1-2 mM) for 24 h. The expression of APAP metabolism-related and antioxidant genes such as Cyp2e1 and Ugt1a1 were increased during SAMe pretreatment. Moreover, SAMe increased intracellular GSH concentration and it was maintained after APAP treatment. To sum up, Phb1 silencing and APAP treatment impaired the metabolism of APAP in hepatocytes, and SAMe exerted a protective effect against hepatotoxicity by upregulating antioxidant genes.
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Affiliation(s)
- Eunhye Cho
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Soohan Jung
- Department of Integrated Biomedical and Life Science, Korea University, Seoul 02841, Republic of Korea
| | - Jina Kim
- Department of Human Biology, University of Southern California, Los Angeles, CA 90089, USA
| | - Kwang Suk Ko
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul 03760, Republic of Korea,Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea,Corresponding author Phone: +82-2-3277-6859 E-mail:
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Hong J, Park E, Lee J, Lee Y, Rooney BV, Park Y. Exercise training mitigates ER stress and UCP2 deficiency-associated coronary vascular dysfunction in atherosclerosis. Sci Rep 2021; 11:15449. [PMID: 34326395 PMCID: PMC8322067 DOI: 10.1038/s41598-021-94944-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/08/2021] [Indexed: 12/11/2022] Open
Abstract
Endoplasmic reticulum (ER) stress and uncoupling protein-2 (UCP2) activation are opposing modulators of endothelial dysfunction in atherosclerosis. Exercise reduces atherosclerosis plaques and enhances endothelial function. Our aim was to understand how exercise affects ER stress and UCP2 activation, and how that relates to endothelial dysfunction in an atherosclerotic murine model. Wild type (C57BL/6, WT) and apolipoprotein-E-knockout (ApoEtm1Unc, ApoE KO) mice underwent treadmill exercise training (EX) or remained sedentary for 12 weeks. Acetylcholine (ACh)-induced endothelium-dependent vasodilation was determined in the presence of an eNOS inhibitor (L-NAME), UCP2 inhibitor (genipin), and ER stress inducer (tunicamycin). UCP2, ER stress markers and NLRP3 inflammasome signaling were quantified by western blotting. p67phox and superoxide were visualized using immunofluorescence and DHE staining. Nitric oxide (NO) was measured by nitrate/nitrite assay. ACh-induced vasodilation was attenuated in coronary arterioles of ApoE KO mice but improved in ApoE KO-EX mice. Treatment of coronary arterioles with L-NAME, tunicamycin, and genipin significantly attenuated ACh-induced vasodilation in all mice except for ApoE KO mice. Exercise reduced expression of ER stress proteins, TXNIP/NLRP3 inflammasome signaling cascades, and Bax expression in the heart of ApoE KO-EX mice. Further, exercise diminished superoxide production and NADPH oxidase p67phox expression in coronary arterioles while simultaneously increasing UCP2 expression and nitric oxide (NO) production in the heart of ApoE KO-EX mice. Routine exercise alleviates endothelial dysfunction in atherosclerotic coronary arterioles in an eNOS, UCP2, and ER stress signaling specific manner, and resulting in reduced TXNIP/NLRP3 inflammasome activity and oxidative stress.
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Affiliation(s)
- Junyoung Hong
- Department of Health and Human Performance, Laboratory of Integrated Physiology, University of Houston, 3875 Holman St, Houston, TX, 77204-6015, USA
| | - Eunkyung Park
- Department of Health and Human Performance, Laboratory of Integrated Physiology, University of Houston, 3875 Holman St, Houston, TX, 77204-6015, USA
| | - Jonghae Lee
- Department of Health and Human Performance, Laboratory of Integrated Physiology, University of Houston, 3875 Holman St, Houston, TX, 77204-6015, USA
| | - Yang Lee
- Department of Medical Physiology, College of Medicine, Texas A&M University, College Station, TX, 77807, USA
| | - Bridgette V Rooney
- Department of Health and Human Performance, Laboratory of Integrated Physiology, University of Houston, 3875 Holman St, Houston, TX, 77204-6015, USA.,Geocontrol Systems Inc, NASA Johnson Space Center, Houston, TX, 77058, USA
| | - Yoonjung Park
- Department of Health and Human Performance, Laboratory of Integrated Physiology, University of Houston, 3875 Holman St, Houston, TX, 77204-6015, USA.
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Xiao J, Cao H, Guo S, Xiao S, Li N, Li M, Wu Y, Liu H. Long-term administration of low-dose selenium nanoparticles with different sizes aggravated atherosclerotic lesions and exhibited toxicity in apolipoprotein E-deficient mice. Chem Biol Interact 2021; 347:109601. [PMID: 34324854 DOI: 10.1016/j.cbi.2021.109601] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/10/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022]
Abstract
Exploration of long-term in vivo effects of nanomaterials, particularly those with potential biomedical applications, is quite important for better understanding and evaluating their biosafety. Selenium nanoparticles (SeNPs) has been considered as a good candidate in biomedical applications due to its high bioavailability, considerable biological activity, and low toxicity. However, its long-term biological effects and biosafety remain unknown. Our previous study demonstrated that 8-week supplementation with SeNPs (50 μg Se/kg/day) was safe and had an anti-atherosclerotic activity in apolipoprotein E-deficient (ApoE-/-) mice, a well-known animal model of atherosclerosis. As a chronic disease, atherosclerosis needs long-term drug therapy. The aim of this study is to investigate the long-term effects of SeNPs with different sizes on atherosclerotic lesions and their biosafety in ApoE-/- mice fed with a high fat diet. Unexpectedly, the results showed that 24-week administration of SeNPs even at a low dose (50 μg Se/kg/day) aggravated atherosclerotic lesions. Furthermore, SeNPs exacerbated oxidative stress by inhibiting the activities of antioxidant enzymes and the expression of antioxidant selenoenzymes. SeNPs also exacerbated hyperlipidaemia by inducing hepatic lipid metabolic disorder. In the meanwhile, SeNPs aggravated organ injury, especially liver and kidney injury. The above adverse effects of SeNPs were size dependent: SeNPs with the size of 40.4 nm showed the highest adverse effects among the SeNPs with three sizes (23.1 nm, 40.4 nm, and 86.8 nm). In conclusion, the present work shows that long-term administration of low-dose SeNPs aggravated atherosclerotic lesions by enhancing oxidative stress and hyperlipidaemia in ApoE-/- mice, indicative of cardiovascular toxicity. Moreover, long-term administration of SeNPs led to injury to liver and kidney. These results offer novel insights for better understanding the biosafety of SeNPs and other biomedical nanomaterials.
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Affiliation(s)
- Junying Xiao
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hui Cao
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Siyu Guo
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shengze Xiao
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Na Li
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Min Li
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yuzhou Wu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Wuhan, 430074, China
| | - Hongmei Liu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Wuhan, 430074, China.
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6
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Altun S, Budak H. The protective effect of the cardiac thioredoxin system on the heart in the case of iron overload in mice. J Trace Elem Med Biol 2021; 64:126704. [PMID: 33370714 DOI: 10.1016/j.jtemb.2020.126704] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/27/2020] [Accepted: 12/10/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Iron, which is essential for many vital biological processes, causes significant clinical pathologies in the case of its deficiency or excess. Cardiovascular protective pathways are activated by iron therapy. However, determining the appropriate iron concentration is essential to protect heart tissue from iron-induced oxidative stress. The thioredoxin system is one of the antioxidant systems that protect cells against oxidative stress. Moreover, it allows the binding of many transcription factors for apoptosis, myocardial protection, the stimulation of cell proliferation, and angiogenesis processes, especially the regulation of the cardiovascular system. This study's goal was to understand how iron overload affects the gene and protein levels of the thioredoxin system in the mouse heart. METHODS BALB/c mice were randomly separated into two groups. The iron overload group was administered with intraperitoneal injections of an iron-dextran solution twice a week for three weeks. In parallel, the control group was intraperitoneally given Dextran 5 solution. The total iron content, the total GSH level, the reduced glutathione/oxidized glutathione (GSH/GSSG) ratio, and thioredoxin reductase 1 (TXNRD1) activity were demonstrated spectroscopically. Changes in the iron metabolism marker genes and thioredoxin system genes were examined by qPCR. The quantitative protein expression of TXNRD1 and thioredoxin-interacting protein (TXNIP) was examined by western blotting. RESULTS The iron content of the heart increased in the iron overload group. The expression of hepcidin (Hamp) and ferroportin (Fpn) increased with iron overload. However, decreased expression was observed for ferritin (Fth). No changes were revealed in the GSH level and GSH/GSSG ratio. The gene expression of thioredoxin 1 (Txn1), Txnrd1, and Txnip did not change. TXNRD1 activity and protein expression increased significantly, while the protein expression of TXNIP decreased significantly. CONCLUSION In the case of iron overload, the cardiac thioredoxin system is affected by the protein level rather than the gene level. The amount and duration of iron overload used in this study may be considered as a starting point for further studies to determine appropriate conditions for the iron therapy of cardiovascular diseases.
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Affiliation(s)
- Sevda Altun
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey; Rafet Kayış Faculty of Engineering, Department of Genetic and Bioengineering, Alaaddin Keykubat University, Antalya, Turkey
| | - Harun Budak
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey.
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Guo L, Xiao J, Liu H, Liu H. Selenium nanoparticles alleviate hyperlipidemia and vascular injury in ApoE-deficient mice by regulating cholesterol metabolism and reducing oxidative stress. Metallomics 2019; 12:204-217. [PMID: 31793592 DOI: 10.1039/c9mt00215d] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Atherosclerosis and related cardiovascular diseases represent the greatest threats to human health worldwide. This study was designed to investigate the anti-atherosclerotic activity of selenium nanoparticles (SeNPs) in apolipoprotein E deficient (ApoE-/-) mice fed a high-cholesterol, high-fat diet. The results demonstrated that animals either treated with SeNPs (50 μg Se per kg per day) or with atorvastatin (10 mg per kg per day) alone showed significant relief of vascular injury after 8 weeks of treatment. SeNPs could obviously decrease the level of serum total cholesterol, triglyceride and low-density lipoprotein cholesterol, whereas increase serum high-density lipoprotein cholesterol. At the same time, SeNPs regulated the expression levels of key genes associated with cholesterol metabolism in the liver. Furthermore, SeNPs significantly reduced the lipid peroxidation level, but increased the NO level and the activities of glutathione peroxidase (GPx), superoxide dismutase (SOD) and catalase in the serum and liver. SeNPs also increased the expression levels of antioxidant selenoenzymes or selenoproteins in the liver. In addition, SeNPs could alleviate H2O2-induced cytotoxicity and oxidative stress by upregulating the activities of SOD and GPx in endothelial cells cultured in vitro. These results suggested that SeNPs could significantly alleviate hyperlipidemia and vascular injury in ApoE-/- mice, possibly by regulating cholesterol metabolism and reducing oxidative stress through antioxidant selenoenzymes/selenoproteins. SeNPs might be a potential candidate for the prevention of atherosclerosis.
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Affiliation(s)
- Leilei Guo
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
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8
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Xu W, Qian M, Huang C, Cui P, Li W, Du Q, Yi S, Shi X, Guo Y, Zheng J, Liu D, Lin D. Comparison of Mechanisms of Endothelial Cell Protections Between High-Density Lipoprotein and Apolipoprotein A-I Mimetic Peptide. Front Pharmacol 2019; 10:817. [PMID: 31379582 PMCID: PMC6659106 DOI: 10.3389/fphar.2019.00817] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 06/24/2019] [Indexed: 01/23/2023] Open
Abstract
Apolipoprotein A-I (apoA-I) mimetic peptide, D-4F, exhibits anti-atherogenic effects similar to high-density lipoprotein (HDL). However, it remains elusive whether D-4F and HDL share similar molecular mechanisms underlying anti-atherogenic effects and endothelial cell protections. We here compared the metabolic changes in endothelial cells induced by D-4F and HDL against oxidized low-density lipoprotein (ox-LDL), which may be of benefit to understanding the protective mechanisms of HDL and D-4F. Functional assays, including wound healing, transwell migration, and tube formation, were used to evaluate the pro-angiogenic effects of HDL and D-4F. NMR-based metabolomic analysis was employed to explore the protective mechanisms underlying HDL and D-4F. Partial least-squares discriminant analysis (PLS-DA) was performed to assess metabolic profiles, and orthogonal PLS-DA (OPLS-DA) was carried out to identify characteristic metabolites. Moreover, significantly altered metabolic pathways were also analyzed. We found that ox-LDL impaired the migration and tube formation of endothelial cells. Metabolomic analysis showed that ox-LDL triggered oxidative stress, impaired glycolysis, and enhanced glycerophospholipid metabolism. Both HDL and D-4F improved the migration and angiogenesis of endothelial cells, alleviated oxidative stress, and ameliorated disordered glycolysis impaired by ox-LDL. Strikingly, HDL partially attenuated the disturbed glycerophospholipid metabolism, whereas D-4F did not show this effect. In summary, although D-4F shared the similar protective effects with HDL on the migration and angiogenesis of endothelial cells, it could not deduce the molecular mechanisms of HDL completely. Nevertheless, D-4F possesses the potentiality to be exploited as clinically applicable agent for endothelial cell protection and cardiovascular disease treatment.
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Affiliation(s)
- Wenqi Xu
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Mingming Qian
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen, China
| | - Caihua Huang
- Exercise and Health Laboratory, Xiamen University of Technology, Xiamen, China
| | - Pengfei Cui
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Wei Li
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen, China
| | - Qian Du
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen, China
| | - Shenghui Yi
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Xiaohe Shi
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Yansong Guo
- Department of Cardiology, Fujian Provincial Hospital, Provincial Clinical Medicine College, Fujian Cardiovascular Institute, Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Medical University, Fuzhou, China
| | - Jianlan Zheng
- Department of Ob/Gyn and Neonatal and Reproductive Medicine, The People's Liberation Army 174th Hospital and The Affiliated Hospital of Xiamen University, Xiamen, China
| | - Donghui Liu
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen, China.,Department of Cardiology, Fujian Provincial Hospital, Provincial Clinical Medicine College, Fujian Cardiovascular Institute, Fujian Provincial Key Laboratory of Cardiovascular Disease, Fujian Provincial Center for Geriatrics, Fujian Medical University, Fuzhou, China
| | - Donghai Lin
- Key Laboratory for Chemical Biology of Fujian Province, MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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Marchio P, Guerra-Ojeda S, Vila JM, Aldasoro M, Victor VM, Mauricio MD. Targeting Early Atherosclerosis: A Focus on Oxidative Stress and Inflammation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8563845. [PMID: 31354915 PMCID: PMC6636482 DOI: 10.1155/2019/8563845] [Citation(s) in RCA: 350] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/10/2019] [Accepted: 05/19/2019] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is a chronic vascular inflammatory disease associated to oxidative stress and endothelial dysfunction. Oxidation of low-density lipoprotein (LDL) cholesterol is one of the key factors for the development of atherosclerosis. Nonoxidized LDL have a low affinity for macrophages, so they are not themselves a risk factor. However, lowering LDL levels is a common clinical practice to reduce oxidation and the risk of major events in patients with cardiovascular diseases (CVD). Atherosclerosis starts with dysfunctional changes in the endothelium induced by disturbed shear stress which can lead to endothelial and platelet activation, adhesion of monocytes on the activated endothelium, and differentiation into proinflammatory macrophages, which increase the uptake of oxidized LDL (oxLDL) and turn into foam cells, exacerbating the inflammatory signalling. The atherosclerotic process is accelerated by a myriad of factors, such as the release of inflammatory chemokines and cytokines, the generation of reactive oxygen species (ROS), growth factors, and the proliferation of vascular smooth muscle cells. Inflammation and immunity are key factors for the development and complications of atherosclerosis, and therefore, the whole atherosclerotic process is a target for diagnosis and treatment. In this review, we focus on early stages of the disease and we address both biomarkers and therapeutic approaches currently available and under research.
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Affiliation(s)
- Patricia Marchio
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
| | - Sol Guerra-Ojeda
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
| | - José M. Vila
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
| | - Martín Aldasoro
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
| | - Victor M. Victor
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
- Service of Endocrinology, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - Maria D. Mauricio
- Department of Physiology, Faculty of Medicine and Odontology, Universitat de Valencia and Institute of Health Research INCLIVA, Valencia, Spain
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Raffaeli G, Ghirardello S, Passera S, Mosca F, Cavallaro G. Oxidative Stress and Neonatal Respiratory Extracorporeal Membrane Oxygenation. Front Physiol 2018; 9:1739. [PMID: 30564143 PMCID: PMC6288438 DOI: 10.3389/fphys.2018.01739] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022] Open
Abstract
Oxidative stress is a frequent condition in critically ill patients, especially if exposed to extracorporeal circulation, and it is associated with worse outcomes and increased mortality. The inflammation triggered by the contact of blood with a non-endogenous surface, the use of high volumes of packed red blood cells and platelets transfusion, the risk of hyperoxia and the impairment of antioxidation systems contribute to the increase of reactive oxygen species and the imbalance of the redox system. This is responsible for the increased production of superoxide anion, hydrogen peroxide, hydroxyl radicals, and peroxynitrite resulting in increased lipid peroxidation, protein oxidation, and DNA damage. The understanding of the pathophysiologic mechanisms leading to redox imbalance would pave the way for the future development of preventive approaches. This review provides an overview of the clinical impact of the oxidative stress during neonatal extracorporeal support and concludes with a brief perspective on the current antioxidant strategies, with the aim to focus on the potential oxidative stress-mediated cell damage that has been implicated in both short and long-term outcomes.
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Affiliation(s)
- Genny Raffaeli
- NICU, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Stefano Ghirardello
- NICU, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sofia Passera
- NICU, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Fabio Mosca
- NICU, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Cavallaro
- NICU, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
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11
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The Anticancer Activities of Some Nitrogen Donor Ligands Containing bis-Pyrazole, Bipyridine, and Phenanthroline Moiety Using Docking Methods. Bioinorg Chem Appl 2018; 2018:5796287. [PMID: 29967635 PMCID: PMC6008838 DOI: 10.1155/2018/5796287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 11/08/2017] [Accepted: 05/09/2018] [Indexed: 11/17/2022] Open
Abstract
The anticancer study of nitrogen-chelating ligands can be of tremendous help in choosing ligands for the anticancer metal complexes design especially with ruthenium(II). The inhibitory anticancer activities of some nitrogen-chelating ligands containing bis-pyrazole, bipyridine, and phenanthroline were studied using experimental screening against cancer cell and theoretical docking methods. In vitro anticancer activities showed compound 11 as the most promising inhibitor, and the computational docking further indicates its strong inhibitory activities towards some cancer-related receptors. Among the twenty-one modelled ligands, pyrazole-based compounds 7, 11, and 15 are the most promising inhibitors against the selected receptors followed by 18 and 21 which are derivatives of pyridine and phenanthroline, respectively. The presence of the carboxylic unit in the top five ligands that displayed stronger inhibitory activities against the selected receptors is an indication that the formation of noncovalent interactions such as hydrogen bonding and a strong electron-withdrawing group in these compounds are very important for their receptor interactions. The thermodynamic properties, the polarizabilities, and the LUMO energy of the compounds are in the same patterns as the observed inhibitory activities.
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12
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Tinkov AA, Bjørklund G, Skalny AV, Holmgren A, Skalnaya MG, Chirumbolo S, Aaseth J. The role of the thioredoxin/thioredoxin reductase system in the metabolic syndrome: towards a possible prognostic marker? Cell Mol Life Sci 2018; 75:1567-1586. [PMID: 29327078 PMCID: PMC11105605 DOI: 10.1007/s00018-018-2745-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/13/2017] [Accepted: 01/03/2018] [Indexed: 12/12/2022]
Abstract
Mammalian thioredoxin reductase (TrxR) is a selenoprotein with three existing isoenzymes (TrxR1, TrxR2, and TrxR3), which is found primarily intracellularly but also in extracellular fluids. The main substrate thioredoxin (Trx) is similarly found (as Trx1 and Trx2) in various intracellular compartments, in blood plasma, and is the cell's major disulfide reductase. Thioredoxin reductase is necessary as a NADPH-dependent reducing agent in biochemical reactions involving Trx. Genetic and environmental factors like selenium status influence the activity of TrxR. Research shows that the Trx/TrxR system plays a significant role in the physiology of the adipose tissue, in carbohydrate metabolism, insulin production and sensitivity, blood pressure regulation, inflammation, chemotactic activity of macrophages, and atherogenesis. Based on recent research, it has been reported that the modulation of the Trx/TrxR system may be considered as a new target in the management of the metabolic syndrome, insulin resistance, and type 2 diabetes, as well as in the treatment of hypertension and atherosclerosis. In this review evidence about a possible role of this system as a marker of the metabolic syndrome is reported.
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Affiliation(s)
- Alexey A Tinkov
- Yaroslavl State University, Yaroslavl, Russia
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
- Institute of Cellular and Intracellular Symbiosis, Russian Academy of Sciences, Orenburg, Russia
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Toften 24, 8610, Mo i Rana, Norway.
| | - Anatoly V Skalny
- Yaroslavl State University, Yaroslavl, Russia
- Peoples' Friendship University of Russia (RUDN University), Moscow, Russia
- Trace Element Institute for UNESCO, Lyon, France
- Orenburg State University, Orenburg, Russia
| | - Arne Holmgren
- Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institute, Stockholm, Sweden
| | | | - Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy
| | - Jan Aaseth
- Research Department, Innlandet Hospital Trust, Brumunddal, Norway
- Inland Norway University of Applied Sciences, Elverum, Norway
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13
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Jaiswal SK, Prakash R, Prabhu KS, Tejo Prakash N. Bioaccessible selenium sourced from Se-rich mustard cake facilitates protection from TBHP induced cytotoxicity in melanoma cells. Food Funct 2018; 9:1998-2004. [PMID: 29644347 PMCID: PMC5918226 DOI: 10.1039/c7fo01644a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selenium (Se) is an essential dietary supplement that resolves inflammatory responses and offers antioxidant cytoprotection. In this study, we present the data on the cytoprotective effect of Se-rich mustard protein isolated from mustard cultivated in seleniferous soils in Punjab, India. The concentrations of total Se in mustard seed, oil-free mustard cake, and mustard protein were 110.0 ± 3.04, 143.0 ± 5.18, and 582.3 ± 6.23 μg g-1, respectively. The cytoprotective effect of Se-rich mustard protein was studied on tert-butyl hydroperoxide (TBHP)-induced cytotoxicity in a mouse melanoma cell line (B16-F10). When compared with TBHP treated cells (where no viable cells were found), Se-rich protein made bioaccessible through simulated gastrointestinal digestion protected melanoma cells from cytotoxicity with decreased levels of oxidative stress resulting in 73% cell viability. Such an effect was associated with a significant increase in glutathione peroxidase activity as a function of bioaccessible Se and its response towards cytoprotection.
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Affiliation(s)
- Sumit K Jaiswal
- School of Energy and Environment, Thapar University, Patiala, India.
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14
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Wilson RL, Selvaraju V, Lakshmanan R, Thirunavukkarasu M, Campbell J, McFadden DW, Maulik N. Thioredoxin-1 attenuates sepsis-induced cardiomyopathy after cecal ligation and puncture in mice. J Surg Res 2017; 220:68-78. [PMID: 29180214 PMCID: PMC7904090 DOI: 10.1016/j.jss.2017.06.062] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/12/2017] [Accepted: 06/19/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Sepsis is a leading cause of mortality among patients in intensive care units across the USA. Thioredoxin-1 (Trx-1) is an essential 12 kDa cytosolic protein that, apart from maintaining the cellular redox state, possesses multifunctional properties. In this study, we explored the possibility of controlling adverse myocardial depression by overexpression of Trx-1 in a mouse model of severe sepsis. METHODS Adult C57BL/6J and Trx-1Tg/+ mice were divided into wild-type sham (WTS), wild-type cecal ligation and puncture (WTCLP), Trx-1Tg/+sham (Trx-1Tg/+S), and Trx-1Tg/+CLP groups. Cardiac function was evaluated before surgery, 6 and 24 hours after CLP surgery. Immunohistochemical and Western blot analysis were performed after 24 hours in heart tissue sections. RESULTS Echocardiography analysis showed preserved cardiac function in the Trx-1Tg/+ CLP group compared with the WTCLP group. Similarly, Western blot analysis revealed increased expression of Trx-1, heme oxygenase-1 (HO-1), survivin (an inhibitor of apoptosis [IAP] protein family), and decreased expression of thioredoxin-interacting protein (TXNIP), caspase-3, and 3- nitrotyrosine in the Trx-1Tg/+CLP group compared with the WTCLP group. Immunohistochemical analysis showed reduced 4-hydroxynonenal, apoptosis, and vascular leakage in the cardiac tissue of Trx-1Tg/+CLP mice compared with mice in the WTCLP group. CONCLUSIONS Our results indicate that overexpression of Trx-1 attenuates cardiac dysfunction during CLP. The mechanism of action may involve reduction of oxidative stress, apoptosis, and vascular permeability through activation of Trx-1/HO-1 and anti-apoptotic protein survivin.
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Affiliation(s)
- Rickesha L Wilson
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Vaithinathan Selvaraju
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Rajesh Lakshmanan
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Mahesh Thirunavukkarasu
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut.
| | - Jacob Campbell
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut
| | - David W McFadden
- Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Nilanjana Maulik
- Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut School of Medicine, Farmington, Connecticut; Department of Surgery, University of Connecticut School of Medicine, Farmington, Connecticut.
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15
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Iqbal A, Almeida FCL. 1H, 13C and 15N chemical shift assignments of Saccharomyces cerevisiae type 1 thioredoxin in the oxidized state by solution NMR spectroscopy. BIOMOLECULAR NMR ASSIGNMENTS 2017; 11:221-224. [PMID: 28808882 DOI: 10.1007/s12104-017-9752-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 08/05/2017] [Indexed: 06/07/2023]
Abstract
Thioredoxins (Trx) are ubiquitous proteins that regulate several biochemical processes inside the cell. Trx is an important player, displaying oxidoreductase activity and helping to keep and regulate the oxidative state of the cellular environment. Trx also participates in the regulation of many cellular functions, such as DNA synthesis, protection against oxidative stress, cell cycle and signal transduction. The oxidized Trx is the target for another set of proteins, such as thioredoxin reductase (TrR), which used the reductive potential of NADPH. The oxidized state of Trx also plays important role in regulation of redox state in the cells. In this regard, the oxidized form of Trx is a putative conformer that contributes to the cellular redox environment. Here we report the chemical shift assignments (1H, 13C and 15N) in solution at 15 °C. We also showed the secondary structure analysis of the oxidized form of yeast thioredoxin (yTrx1) as basis for future NMR studies of protein-target interactions and dynamics. The assignment was done at low concentration (200 µM) because it is important to keep intact the water cavity.
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Affiliation(s)
- Anwar Iqbal
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS/CNRMN, Rio de Janeiro, RJ, 21941-599, Brazil
- National Center for Structural Biology and Bioimaging (CENABIO), National Center for Nuclear Magnetic Resonance (CNRMN), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabio C L Almeida
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS/CNRMN, Rio de Janeiro, RJ, 21941-599, Brazil.
- National Center for Structural Biology and Bioimaging (CENABIO), National Center for Nuclear Magnetic Resonance (CNRMN), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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16
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Couchie D, Vaisman B, Abderrazak A, Mahmood DFD, Hamza MM, Canesi F, Diderot V, El Hadri K, Nègre-Salvayre A, Le Page A, Fulop T, Remaley AT, Rouis M. Human Plasma Thioredoxin-80 Increases With Age and in ApoE -/- Mice Induces Inflammation, Angiogenesis, and Atherosclerosis. Circulation 2017; 136:464-475. [PMID: 28473446 DOI: 10.1161/circulationaha.117.027612] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 04/26/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND Thioredoxin (TRX)-1, a ubiquitous 12-kDa protein, exerts antioxidant and anti-inflammatory effects. In contrast, the truncated form, called TRX80, produced by macrophages induces upregulation of proinflammatory cytokines. TRX80 also promotes the differentiation of mouse peritoneal and human macrophages toward a proinflammatory M1 phenotype. METHODS TRX1 and TRX80 plasma levels were determined with a specific ELISA. A disintegrin and metalloproteinase domain-containing protein (ADAM)-10, ADAM-17, and ADAM-10 activities were measured with SensoLyte 520 ADAM10 Activity Assay Kit, Fluorimetric, and InnoZyme TACE Activity Kit, respectively. Western immunoblots were performed with specific antibodies to ADAM-10 or ADAM-17. Angiogenesis study was evaluated in vitro with human microvascular endothelial cells-1 and in vivo with the Matrigel plug angiogenesis assay in mice. The expression of macrophage phenotype markers was investigated with real-time polymerase chain reaction. Phosphorylation of Akt, mechanistic target of rapamycin, and 70S6K was determined with specific antibodies. The effect of TRX80 on NLRP3 inflammasome activity was evaluated by measuring the level of interleukin-1β and -18 in the supernatants of activated macrophages with ELISA. Hearts were used for lesion surface evaluation and immunohistochemical studies, and whole descending aorta were stained with Oil Red O. For transgenic mice generation, the human scavenger receptor (SR-A) promoter/enhancer was used to drive macrophage-specific expression of human TRX80 in mice. RESULTS In this study, we observed a significant increase of plasma levels of TRX80 in old subjects compared with healthy young subjects. In parallel, an increase in expression and activity of ADAM-10 and ADAM-17 in old peripheral blood mononuclear cells compared with those of young subjects was observed. Furthermore, TRX80 was found to colocalize with tumor necrosis factor-α, a macrophage M1 marker, in human atherosclerotic plaque. In addition, TRX80 induced the expression of murine M1 macrophage markers through Akt2/mechanistic target of rapamycin-C1/70S6K pathway and activated the inflammasome NLRP3, leading to the release of interleukin-1β and -18, potent atherogenic cytokines. Moreover, TRX80 exerts a powerful angiogenic effect in both in vitro and in vivo mouse studies. Finally, transgenic mice that overexpress human TRX80 specifically in macrophages of apoE-/- mice have a significant increase of aortic atherosclerotic lesions. CONCLUSIONS TRX80 showed an age-dependent increase in human plasma. In mouse models, TRX80 was associated with a proinflammatory status and increased atherosclerosis.
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Affiliation(s)
- Dominique Couchie
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Boris Vaisman
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Amna Abderrazak
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Dler Faieeq Darweesh Mahmood
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Magda M Hamza
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Fanny Canesi
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Vimala Diderot
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Khadija El Hadri
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Anne Nègre-Salvayre
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Aurélie Le Page
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Tamas Fulop
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Alan T Remaley
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.)
| | - Mustapha Rouis
- From Biological Adaptation and Ageing (B2A), CNRS UMR-8256/INSERM ERL U-1164, Biological Institute Paris-Seine, Sorbonne University, Paris, France (D.C., A.A., D.F.D.M., M.M.H., F.C., V.D., K.E.H., M.R.); Lipoprotein Metabolism Section, Cardiovascular-Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (B.V., A.T.R.): Institut des Maladies Métaboliques et Cardiovasculaires (12 MC), INSERM UMR 1048, Toulouse, France (A.N.-S.); and Centre de Recherche sur le Vieillissement, Service Gériatrique, Département de Médecine, Université de Sherbrooke, Quebec, Canada (A.L.P., T.F.).
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17
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Protective effect of seleno-β-lactoglobulin (Se-β-lg) against oxidative stress in D-galactose-induced aging mice. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.09.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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18
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van Zelst M, Hesta M, Gray K, Beech K, Cools A, Alexander LG, Du Laing G, Janssens GPJ. Selenium Digestibility and Bioactivity in Dogs: What the Can Can, the Kibble Can't. PLoS One 2016; 11:e0152709. [PMID: 27043433 PMCID: PMC4820116 DOI: 10.1371/journal.pone.0152709] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 03/17/2016] [Indexed: 11/18/2022] Open
Abstract
There is a growing concern for the long-term health effects of selenium (Se) over- or underfeeding. The efficiency of utilization of dietary Se is subject to many factors. Our study in dogs evaluated the effect of diet type (canned versus kibble) and dietary protein concentration on Se digestibility and bioactivity. Canned and kibble diets are commonly used formats of dog food, widely ranging in protein concentration. Twenty-four Labrador retrievers were used and four canned and four kibble diets were selected with crude protein concentrations ranging from 10.1 to 27.5 g/MJ. Crude protein concentration had no influence on the digestibility of Se in either canned or kibble diets, but a lower Se digestibility was observed in canned compared to kibble diets. However, the biological activity of Se, as measured by whole blood glutathione peroxidase, was higher in dogs fed the canned diets than in dogs fed the kibble diets and decreased with increasing crude protein intake. These results indicate that selenium recommendations in dog foods need to take diet type into account.
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Affiliation(s)
- Mariëlle van Zelst
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Myriam Hesta
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Kerry Gray
- WALTHAM Centre for Pet Nutrition, Waltham-on-the-Wolds, Leicestershire, United Kingdom
| | - Karen Beech
- WALTHAM Centre for Pet Nutrition, Waltham-on-the-Wolds, Leicestershire, United Kingdom
| | - An Cools
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Lucille G. Alexander
- WALTHAM Centre for Pet Nutrition, Waltham-on-the-Wolds, Leicestershire, United Kingdom
| | - Gijs Du Laing
- Department of Applied Analytical & Physical Chemistry, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Geert P. J. Janssens
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- * E-mail:
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Yoshioka J. Thioredoxin superfamily and its effects on cardiac physiology and pathology. Compr Physiol 2016; 5:513-30. [PMID: 25880503 DOI: 10.1002/cphy.c140042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A precise control of oxidation/reduction of protein thiols is essential for intact cardiac physiology. Irreversible oxidative modifications have been proposed to play a role in the pathogenesis of cardiovascular diseases. An imbalance of redox homeostasis with diminution of antioxidant capacities predisposes the heart to oxidant injury. There is growing interest in endoplasmic reticulum (ER) stress in the cardiovascular field, since perturbation of redox homeostasis in the ER is sufficient to cause ER stress. Because a number of human diseases are related to altered redox homeostasis and defects in protein folding, many research efforts have been devoted in recent years to understanding the structure and enzymatic properties of the thioredoxin superfamily. The thioredoxin superfamily has been well documented as thiol oxidoreductases to exert a role in various cell signaling pathways. The redox properties of the thioredoxin motif account for the different functions of several members of the thioredoxin superfamily. While thioredoxin and glutaredoxin primarily act as antioxidants by reducing protein disulfides and mixed disulfide, another member of the superfamily, protein disulfide isomerase (PDI), can act as an oxidant by forming intrachain disulfide bonds that contribute to proper protein folding. Increasing evidence suggests a pivotal role of PDI in the survival pathway that promotes cardiomyocyte survival and leads to more favorable cardiac remodeling. Thus, the thiol redox state is important for cellular redox signaling and survival pathway in the heart. This review summarizes the key features of major members of the thioredoxin superfamily directly involved in cardiac physiology and pathology.
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Affiliation(s)
- Jun Yoshioka
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Cambridge, Massachusetts, USA
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Zhao Y, Li X, Tang S. Retrospective analysis of the relationship between elevated plasma levels of TXNIP and carotid intima-media thickness in subjects with impaired glucose tolerance and early Type 2 diabetes mellitus. Diabetes Res Clin Pract 2015; 109:372-7. [PMID: 26026780 DOI: 10.1016/j.diabres.2015.05.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 03/03/2015] [Accepted: 05/02/2015] [Indexed: 01/20/2023]
Abstract
AIMS Accelerated atherosclerosis is the major cause of mortality in diabetic patients and increased oxidative stress probably plays an important role in its development. The aim of our study was to evaluate the relationship between thioredoxin-interacting protein (TXNIP) as an oxidative stress parameter and carotid artery intima-media thickness (CIMT) as an indicator of atherosclerosis in patients with early-state diabetes and impaired glucose tolerance. METHODS The study was a retrospective analysis of 90 patients with impaired glucose regulation (IGR), 80 patients with early Type 2 diabetes mellitus (T2DM), and 80 subjects with normal glucose tolerance (NGT) as the control group. It was conducted at the endocrine out-patient clinic and hospital department of Cangzhou Central Hospital (Cangzhou, China) from June 2012 to Oct. 2013. Plasma TXNIP was measured to evaluate the level of oxidative stress. CIMT was assessed by carotid artery ultrasonography. Soluble vascular cell adhesion molecule-1 (sVCAM-1), a risk indicator for endothelial dysfunction, was also measured. RESULTS Compared to the NGT control, patients with IGR showed significantly higher plasma levels of TXNIP (P<0.05). Compared to the IGR group, patients with T2DM also had significantly higher plasma levels of TXNIP (P<0.05). CIMT was significantly higher in the subjects with abnormal glucose metabolism than in the NGT group (P<0.05). CIMT showed positive correlations with both TXNIP and sVCAM-1 levels (r = 0.56 and r = 0.49, respectively, both P<0.01). CONCLUSIONS The present study showed that plasma levels of TXNIP may be a useful predictor of subclinical atherosclerosis in Type 2 diabetic patients.
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Affiliation(s)
- Yongcai Zhao
- Department of Endocrinology, CangZhou Central Hospital, Cangzhou, China.
| | - Xinsheng Li
- Department of Endocrinology, CangZhou Central Hospital, Cangzhou, China
| | - Shiling Tang
- Department of Endocrinology, CangZhou Central Hospital, Cangzhou, China
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21
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Riahi Y, Kaiser N, Cohen G, Abd-Elrahman I, Blum G, Shapira OM, Koler T, Simionescu M, Sima AV, Zarkovic N, Zarkovic K, Orioli M, Aldini G, Cerasi E, Leibowitz G, Sasson S. Foam cell-derived 4-hydroxynonenal induces endothelial cell senescence in a TXNIP-dependent manner. J Cell Mol Med 2015; 19:1887-99. [PMID: 25754218 PMCID: PMC4549039 DOI: 10.1111/jcmm.12561] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 01/15/2015] [Indexed: 01/01/2023] Open
Abstract
Vascular endothelial cell (VEC) senescence is considered an early event in the development of atherosclerotic lesions. Stressful stimuli, in particular oxidative stress, have been linked to premature senescence in the vasculature. Foam cells are a major source of reactive oxygen species and may play a role in the induction of VEC senescence; hence, we investigated their involvement in the induction of VEC senescence in a co-culture transwell system. Primary bovine aortic endothelial cells, exposed to the secretome of THP-1 monocyte-derived foam cells, were analysed for the induction of senescence. Senescence associated β-galactosidase activity and the expression of p16 and p21 were increased, whereas phosphorylated retinoblastoma protein was reduced. This senescent phenotype was mediated by 4-hydroxnonenal (4-HNE), a lipid peroxidation product secreted from foam cells; scavenging of 4-HNE in the co-culture medium blunted this effect. Furthermore, both foam cells and 4-HNE increased the expression of the pro-oxidant thioredoxin-interacting protein (TXNIP). Molecular manipulation of TXNIP expression confirmed its involvement in foam cell-induced senescence. Previous studies showed that peroxisome proliferator-activated receptor (PPAR)δ was activated by 4-hydroalkenals, such as 4-HNE. Pharmacological interventions supported the involvement of the 4-HNE-PPARδ axis in the induction of TXNIP and VEC senescence. The association of TXNIP with VEC senescence was further supported by immunofluorescent staining of human carotid plaques in which the expression of both TXNIP and p21 was augmented in endothelial cells. Collectively, these findings suggest that foam cell-released 4-HNE activates PPARδ in VEC, leading to increased TXNIP expression and consequently to senescence.
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Affiliation(s)
- Yael Riahi
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel.,Endocrinology and Metabolism Service, Department of Medicine, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Nurit Kaiser
- Endocrinology and Metabolism Service, Department of Medicine, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Guy Cohen
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Ihab Abd-Elrahman
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Galia Blum
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Oz M Shapira
- Department of Cardiothoracic Surgery, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Tomer Koler
- Department of Cardiothoracic Surgery, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Maya Simionescu
- Institute of Cellular Biology and Pathology N. Simionescu of The Romanian Academy, Bucharest, Romania
| | - Anca V Sima
- Institute of Cellular Biology and Pathology N. Simionescu of The Romanian Academy, Bucharest, Romania
| | - Neven Zarkovic
- Laboratory for Oxidative Stress, Rudjer Boskovic Institute, Zagreb, Croatia
| | - Kamelija Zarkovic
- Department of Pathology, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Marica Orioli
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy
| | - Erol Cerasi
- Endocrinology and Metabolism Service, Department of Medicine, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Gil Leibowitz
- Endocrinology and Metabolism Service, Department of Medicine, The Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Shlomo Sasson
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
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Choi YS, Cho S, Seo SK, Park JH, Kim SH, Lee BS. Alteration in the intrafollicular thiol–redox system in infertile women with endometriosis. Reproduction 2015; 149:155-62. [DOI: 10.1530/rep-14-0438] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The aim of this study was to compare intrafollicular biomarkers of thiol–redox system and chronic inflammation in infertile patients with and without endometriosis, and examine correlations between biomarkers and IVF outcomes. The study included 65 patients receiving IVF: 31 patients with endometriosis vs 34 patients without endometriosis. Follicular fluid (FF) was obtained from a single-dominant follicle during oocyte retrieval and stored at −70 °C. Malondialdehyde, superoxide dismutase, glutathione (GSH), glutathione peroxidase 3 (GPX3), thioredoxin (TRX), TRX-binding protein 2 (TBP2), and peroxiredoxin-4 levels were measured in the FF samples by ELISAs as biomarkers of oxidative stress. The inflammatory cytokines interleukin 1 beta (IL1β), IL6, IL8, and tumor-necrosis factor alpha (TNFα) were also measured by ELISAs. GSH levels were significantly lower in the endometriosis group compared with the controls. TBP2 levels were significantly higher in the endometriosis group. IL6, IL8, and TNFα levels were significantly higher in the endometriosis group. The levels of all of the inflammatory cytokines positively correlated with the levels of TRX. GSH levels positively correlated with the number of high-quality embryos. GPX3 and TRX levels negatively correlated with the percentage of mature oocytes. TNFα levels negatively correlated with the cumulative embryo score per embryo. Logistic regression analysis revealed that the number of high-quality embryos was an independent factor predicting clinical pregnancy. In conclusion, there may be an imbalance in the thiol–redox system and increased levels of inflammatory cytokines in the intrafollicular microenvironment of infertile patients with endometriosis, which may affect the qualities of the oocyte and embryo.
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23
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Rose AH, Hoffmann PR. Selenoproteins and cardiovascular stress. Thromb Haemost 2014; 113:494-504. [PMID: 25354851 DOI: 10.1160/th14-07-0603] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 09/18/2014] [Indexed: 02/07/2023]
Abstract
Dietary selenium (Se) is an essential micronutrient that exerts its biological effects through its incorporation into selenoproteins. This family of proteins contains several antioxidant enzymes such as the glutathione peroxidases, redox-regulating enzymes such as thioredoxin reductases, a methionine sulfoxide reductase, and others. In this review, we summarise the current understanding of the roles these selenoproteins play in protecting the cardiovascular system from different types of stress including ischaemia-reperfusion, homocysteine dysregulation, myocardial hypertrophy, doxirubicin toxicity, Keshan disease, and others.
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Affiliation(s)
| | - Peter R Hoffmann
- Peter R. Hoffmann, University of Hawaii, John A. Burns School of Medicine, 651 Ilalo Street, Honolulu, HI 96813, USA, Fax: +1 808 692 1968, E-mail:
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Kuzmin SM, Chulovskaya SA, Parfenyuk VI. Substituent position influence on the electrochemical properties and antioxidant activity of tetra(aminophenyl)porphyrins. J PORPHYR PHTHALOCYA 2014. [DOI: 10.1142/s108842461450031x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Free radicals and reactive oxygen species (ROS) are important intermediate products in physiological processes. In the healthy cell, they are generated and regulated by enzymes and low molecular weight antioxidants. Overproduction of ROS leads to a large list of diseases, so the determination of antioxidant activity of perspective natural and synthetic compounds is necessary for drugs development. In this paper cyclic voltammetry (CV) method was applied to the electrochemical and superoxide scavenging properties of 5,10,15,20-tetrakis(4′-aminophenyl)porphyrin ( H 2 T (p- NH 2 Ph ) P ) and 5,10,15,20-tetrakis(3′-aminophenyl)porphyrin ( H 2 T (m- NH 2 Ph ) P ) investigation. It is shown that the studied porphyrins have very similar electrochemical behavior and slight effect on the quantity of superoxide produced during first CV cycle therefore the estimation of superoxide scavenging properties may be performed by the [Formula: see text] oxidation peak current monitoring. The antioxidant properties of porphyrins were estimated in terms of binding constants. The strong effect of NH 2 group position on the superoxide scavenging activity are shown: the H 2 T (p- NH 2 Ph ) P (kb = 12.7 × 102 mol-1) demonstrates the significant superoxide scavenging activities whereas H 2 T (m- NH 2 Ph ) P (kb = 0.83 × 102 mol-1) — negligible. The most probable mechanism of superoxide scavenges explaining the observed differences are the H -atoms transfer due to N – H bond breaking in the aminophenyl substituent.
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Affiliation(s)
- Sergey M. Kuzmin
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Svetlana A. Chulovskaya
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia
| | - Vladimir I. Parfenyuk
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo 153045, Russia
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Saito S, Teshima Y, Fukui A, Kondo H, Nishio S, Nakagawa M, Saikawa T, Takahashi N. Glucose fluctuations increase the incidence of atrial fibrillation in diabetic rats. Cardiovasc Res 2014; 104:5-14. [PMID: 25082849 DOI: 10.1093/cvr/cvu176] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
AIMS We investigated whether glucose fluctuations aggravate cardiac fibrosis and increase the occurrence of atrial fibrillation (AF) in rats with diabetes mellitus (DM). METHODS AND RESULTS Streptozotocin-induced diabetic rats were randomly divided into three groups: uncontrolled DM (U-STZ) group, controlled DM (C-STZ) group, and DM with glucose fluctuations (STZ-GF) group. Glucose fluctuations were induced by fasting for 24 h and additional regular insulin injections (0.5 IU/kg) administered three times per week for three consecutive weeks. C-STZ rats were administered long acting insulin (20 IU/kg) twice a day to control blood glucose levels. Cardiac fibrosis evaluated by Masson trichrome staining and the expressions of collagen type 1, collagen type 3, and α-smooth muscle actin were increased in U-STZ rats compared with C-STZ rats, which were more pronounced in STZ-GF rats. The inducibility of AF was significantly larger in U-STZ rats than C-STZ rats and was greatest in STZ-GF rats. To explore the mechanism of cardiac fibrosis, we investigated the levels of reactive oxygen species (ROS) and apoptosis. The expression of malondialdehyde, an indicator of ROS levels, was significantly upregulated in STZ-GF rats compared with U-STZ rats, along with increased thioredoxin-interacting protein (Txnip) expression in STZ-GF rats. Furthermore, caspase-3 expression and the number of TUNEL-positive cells were significantly increased in STZ-GF rats compared with U-STZ and C-STZ rats. CONCLUSION Glucose fluctuations increase the incidence of AF by promoting cardiac fibrosis. Increased ROS levels caused by upregulation of Txnip expression may be a mechanism whereby in glucose fluctuations induce fibrosis.
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Affiliation(s)
- Shotaro Saito
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Yasushi Teshima
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Akira Fukui
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Hidekazu Kondo
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Satoru Nishio
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Mikiko Nakagawa
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Tetsunori Saikawa
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
| | - Naohiko Takahashi
- Department of Cardiology and Clinical Examination, Oita University, Faculty of Medicine, 1-1 Idaigaoka, Hasama, Oita 879-5593, Japan
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Liu L, Liu Y, Qi B, Wu Q, Li Y, Wang Z. Nicorandil attenuates endothelial VCAM-1 expression via thioredoxin production in diabetic rats induced by streptozotocin. Mol Med Rep 2014; 9:2227-32. [PMID: 24676284 DOI: 10.3892/mmr.2014.2066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 02/27/2014] [Indexed: 11/06/2022] Open
Abstract
The anti-angina agent nicorandil has been reported to be beneficial even in patients who have angina with diabetes. However, the mechanism underlying the effect of nicorandil in patients with diabetes remains to be elucidated. In this study, the protective effect of nicorandil on thioredoxin (TRX) protein was investigated, as TRX is a multifunctional endogenous redox regulator that protects cells against various types of cellular and tissue stress. This study was conducted to examine whether nicorandil induces the expression of TRX for the protection against diabetic damage in the vascular tissue of rats. Diabetes was induced in rats by intraperitoneal injection of streptozotocin (STZ) (fasting glucose levels in STZ-induced rats were >14 mmol/l). Diabetic rats were divided into a diabetic control and a nicorandil-treated group. Nicorandil was administered at a dosage of 15 mg/kg/day by gavage feeding. After five weeks of nicorandil administration, blood samples were obtained from the angular vein to measure levels of stress markers, serum superoxide dismutase and malondialdehyde, using the ELISA. The expression of TRX in STZ-induced rat vascular tissue was analyzed by immunohistochemistry, quantitative polymerase chain reaction (qPCR) and western blot analysis. The oral administration of nicorandil induced TRX protein and mRNA expression in the vascular tissue of STZ-induced diabetic rats. In the diabetic control group, the levels of stress were markedly higher than those in the nicorandil-treated group, indicating that nicorandil reduces oxidative stress in serum. In addition to inducing TRX expression, nicorandil attenuated the expression of the vascular cell adhesion molecule-1 (VCAM-1) in diabetic rat vascular endothelial cells. In conclusion, nicorandil attenuates the formation of reactive oxygen species and induces TRX protein expression, consequently resulting in the suppression of VCAM-1 secretion in the vascular endothelial cells of STZ-induced diabetic rats.
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Affiliation(s)
- Lihua Liu
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P.R. China
| | - Yun Liu
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P.R. China
| | - Benling Qi
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P.R. China
| | - Qinqin Wu
- Department of Geriatrics, The Central Hospital of Wuhan, Wuhan 430014, P.R. China
| | - Yuanyuan Li
- Department of Geriatrics, Wuhan General Hospital of Guangzhou Military, Wuhan 430070, P.R. China
| | - Zhaohui Wang
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, P.R. China
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Cardioprotective effect of selenium via modulation of cardiac ryanodine receptor calcium release channels in diabetic rat cardiomyocytes through thioredoxin system. J Nutr Biochem 2013; 24:2110-8. [PMID: 24183307 DOI: 10.1016/j.jnutbio.2013.08.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 07/29/2013] [Accepted: 08/01/2013] [Indexed: 11/21/2022]
Abstract
Increased oxidative stress contributes to heart dysfunction via impaired Ca(2+) homeostasis in diabetes. Abnormal RyR2 function related with altered cellular redox state is an important factor in the pathogenesis of diabetic cardiomyopathy, while its underlying mechanisms remain poorly understood. In the present study, we used a streptozotocin-induced rat model of diabetic cardiomyopathy and tested a hypothesis that diabetes-related alteration in RyR2 function is related with ROS-induced posttranslational modifications. For this, we used heart preparations from either a diabetic rat or a sodium selenate (NaSe)-treated (0.3 mg/kg for 4 weeks) diabetic rat as well as either NaSe- (100 nmol/L) or thioredoxin (Trx; 5 μmol/L)-incubated (30 min) diabetic cardiomyocytes. Experimental approaches included imaging of intracellular free-Ca(2+) ([Ca(2+)]i) under both electrically stimulated and resting Fluo-3-loaded cardiomyocytes. RyR2-mediated SR-Ca(2+) leak was significantly enhanced in diabetic cardiomyocytes, resulting in reduced amplitude and prolonged time courses of [Ca(2+)]i transients compared to those of controls. Both SR-Ca(2+) leak and [Ca(2+)]i transients were normalized by treating diabetic rats with NaSe or by incubating diabetic myocytes with NaSe or Trx. Moreover, exposure of diabetic cardiomyocytes to antioxidants significantly improved [Ca(2+)]i handling factors such as phosphorylation/protein levels of RyR2, amount of RyR2-bound FKBP12.6 and activities of both protein kinase A and CaMKII. NaSe treatment also normalized the oxidative stress/antioxidant defense biomarkers in plasma as well as Trx activity and nuclear factor-κB phosphorylation in the diabetic rat heart. Collectively, these findings suggest that redox modification through Trx-system besides the glutathione system contributes to abnormal function of RyR2s in hyperglycemic cardiomyocytes, presenting a potential therapeutic target for treating diabetics to preserve cardiac function.
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Chen B, Wang W, Shen T, Qi R. Thioredoxin1 downregulates oxidized low-density lipoprotein-induced adhesion molecule expression via Smad3 protein. PLoS One 2013; 8:e76226. [PMID: 24086714 PMCID: PMC3781077 DOI: 10.1371/journal.pone.0076226] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 08/22/2013] [Indexed: 11/18/2022] Open
Abstract
Atherosclerosis is a chronic inflammation disease that is initiated by endothelial cell injury. Oxidized low-density lipoprotein (ox-LDL) is directly associated with chronic vascular inflammation. To understand whether thioredoxin1 (Trx1) participates in an antiinflammatory defense mechanism in atherosclerosis, we investigated the effect of Trx1 on the expression of two adhesion molecules, vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1), in human umbilical vein endothelial cells (HUVECs). Thioredoxin1 and dominant-negative mutant thioredoxin1 (TD) were transiently overexpressed using adenovirus vector gene transfer. Our data showed that Trx1 overexpression suppressed ox-LDL-induced adhesion molecule expression in HUVECs. The overexpression of Trx1 promoted ox-LDL-induced Smad3 phosphorylation and nuclear translocation. A co-immunoprecipitation assay indicated that Smad3 continued to interact with Trx1 with or without ox-LDL stimulation. These results suggest that Trx1 inherently suppresses VCAM-1 and ICAM-1 expression in vascular endothelia and may prevent the initiation of atherosclerosis by attenuating adhesion molecule expression. The enhancement of Smad3 phosphorylation and nuclear expression appears to be primarily responsible for the Trx1-induced downregulation of adhesion molecules.
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Affiliation(s)
- Beidong Chen
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics & Beijing Hospital, Ministry of Health, Beijing, China
| | - Wendong Wang
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics & Beijing Hospital, Ministry of Health, Beijing, China
| | - Tao Shen
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics & Beijing Hospital, Ministry of Health, Beijing, China
| | - Ruomei Qi
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics & Beijing Hospital, Ministry of Health, Beijing, China
- * E-mail:
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29
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Inhibitory activities and possible anticancer targets of Ru(II)-based complexes using computational docking method. J Mol Graph Model 2012; 38:60-9. [DOI: 10.1016/j.jmgm.2012.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 08/04/2012] [Accepted: 08/06/2012] [Indexed: 11/18/2022]
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30
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Cell stress proteins in atherothrombosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:232464. [PMID: 22792412 PMCID: PMC3389727 DOI: 10.1155/2012/232464] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 05/14/2012] [Indexed: 01/13/2023]
Abstract
Cell stress proteins (CSPs) are a large and heterogenous family of proteins, sharing two main characteristics: their levels and/or location are modified under stress and most of them can exert a chaperon function inside the cells. Nonetheless, they are also involved in the modulation of several mechanisms, both at the intracellular and the extracellular compartments. There are more than 100 proteins belonging to the CSPs family, among them the thioredoxin (TRX) system, which is the focus of the present paper. TRX system is composed of several proteins such as TRX and peroxiredoxin (PRDX), two thiol-containing enzymes that are key players in redox homeostasis due to their ability to scavenge potential harmful reactive oxygen species. In addition to their main role as antioxidants, recent data highlights their function in several processes such as cell signalling, immune inflammatory responses, or apoptosis, all of them key mechanisms involved in atherothrombosis. Moreover, since TRX and PRDX are present in the pathological vascular wall and can be secreted under prooxidative conditions to the circulation, several studies have addressed their role as diagnostic, prognostic, and therapeutic biomarkers of cardiovascular diseases (CVDs).
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Jin SM, Park K. Acetaminophen induced cytotoxicity and altered gene expression in cultured cardiomyocytes of h(9)c(2) cells. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2012; 27:e2012011. [PMID: 22639738 PMCID: PMC3355274 DOI: 10.5620/eht.2012.27.e2012011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Accepted: 02/23/2012] [Indexed: 05/27/2023]
Abstract
OBJECTIVES Hepatotoxicity of acetaminophen has been widely studied. However, the adverse effects on the heart have not been sufficiently evaluated. This study was performed to investigate cytotoxicity and alterations of gene expression in cultured cardiomyocytes (H(9)C(2) cells) after exposure to acetaminophen. METHODS H(9)C(2) cells were incubated in a 10 mM concentration of acetaminophen for the designated times (6, 12, and 24 hours), and cytotoxicity was determined by the 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide method. Alteration of gene expression was observed by microarray analysis, and RT-PCR was performed for the three representative oxidative stress-related genes at 24 hours after treatment. RESULTS It revealed that acetaminophen was toxic to cardiomyocytes, and numerous critical genes were affected. Induced genes included those associated with oxidative stress, DNA damage, and apoptosis. Repressed genes included those associated with cell proliferation, myocardial contraction, and cell shape control. CONCLUSIONS These findings provide the evidences of acetaminophen-induced cytotoxicity and changes in gene expression in cultured cardiomyocytes of H(9)C(2) cells.
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Affiliation(s)
- Seon Mi Jin
- Department of Pediatrics, Eulji University College of Medicine, Daejeon, Korea
| | - Kwangsik Park
- College of Pharmacy, Dongduk Women's University, Seoul, Korea
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Schenkel PC, Tavares AMV, Fernandes RO, Diniz GP, Ludke ARL, Ribeiro MFM, da Rosa Araujo AS, Barreto-Chaves ML, Belló-Klein A. Time course of hydrogen peroxide-thioredoxin balance and its influence on the intracellular signalling in myocardial infarction. Exp Physiol 2012; 97:741-9. [DOI: 10.1113/expphysiol.2012.064832] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Spindel ON, World C, Berk BC. Thioredoxin interacting protein: redox dependent and independent regulatory mechanisms. Antioxid Redox Signal 2012; 16:587-96. [PMID: 21929372 PMCID: PMC3270053 DOI: 10.1089/ars.2011.4137] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 09/19/2011] [Accepted: 09/19/2011] [Indexed: 12/18/2022]
Abstract
SIGNIFICANCE The thioredoxin-interacting protein (TXNIP, also termed VDUP1 for vitamin D upregulated protein or TBP2 for thioredoxin-binding protein) was originally discovered by virtue of its strong regulation by vitamin D. Recently, TXNIP has been found to regulate the cellular reduction-oxidation (redox) state by binding to and inhibiting thioredoxin (TRX) in a redox-dependent fashion. RECENT ADVANCES Studies of the Hcb-19 mouse, TXNIP nonsense mutated mouse, demonstrate redox-mediated roles in lipid and glucose metabolism, cardiac function, inflammation, and carcinogenesis. Exciting recent data indicate important roles for TXNIP in redox independent signaling. Specifically, sequence analysis revealed that TXNIP is a member of the classical visual/β-arrestin superfamily, and is one of the six members of the arrestin domain-containing (ARRDC, or α-arrestin) family. CRITICAL ISSUES Although the function of α-arrestins is not well known, recent studies suggest roles in endocytosis and protein ubiquitination through PPxY motifs in their C-terminal tails. Importantly, the ability of TXNIP to inhibit glucose uptake was found to be independent of TRX binding. Further investigation showed that several metabolic functions of TXNIP were due to the arrestin domains, thus further supporting the importance of redox independent functions of TXNIP. FUTURE DIRECTIONS Since TXNIP transcription and protein stability are highly regulated by multiple tissue-specific stimuli, it appears that TXNIP should be a good therapeutic target for metabolic diseases.
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Affiliation(s)
- Oded N. Spindel
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
- Department of Pharmacology and Physiology, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Cameron World
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Bradford C. Berk
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
- Department of Pharmacology and Physiology, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York
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Ferreira NE, Omae S, Pereira A, Rodrigues MV, Miyakawa AA, Campos LC, Santos PC, Dallan LA, Martinez TL, Santos RD, Mill JG, Krieger JE, Pereira AC. Thioredoxin interacting protein genetic variation is associated with diabetes and hypertension in the Brazilian general population. Atherosclerosis 2012; 221:131-6. [DOI: 10.1016/j.atherosclerosis.2011.12.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 11/03/2011] [Accepted: 12/06/2011] [Indexed: 12/17/2022]
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Abstract
Cardiac ischemia-reperfusion (I-R) injury occurs upon prompt restoration of blood flow to the ischemic myocardium after an acute myocardial infarction. Interestingly, many of the features of I-R injury are related to impaired mitochondrial signaling and mitochondrial dysfunction. Restoring cardiac energy bioavailability and reduction-oxidation (redox) signaling are therefore important in recovery after I-R injury. In this issue of the JCI, Yoshioka and colleagues describe an important and unexpected role for thioredoxin-interacting protein (TXNIP) in the control of mitochondrial respiration and cell energy metabolism. Their findings could open the door for development of TXNIP-targeted therapeutic approaches for the treatment of cardiac I-R injury.
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Affiliation(s)
- Oded N Spindel
- Department of Medicine and Department of Pharmacology and Physiology, University of Rochester School of Medicine and Dentistry, Aab Cardiovascular Research Institute, Rochester, New York 14642, USA
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Leichsenring-Silva F, Tavares AMV, Mosele F, Berger B, Llesuy S, Belló-Klein A. Association of the time course of pulmonary arterial hypertension with changes in oxidative stress in the left ventricle. Clin Exp Pharmacol Physiol 2011; 38:804-10. [DOI: 10.1111/j.1440-1681.2011.05608.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Thioredoxin interacting protein (TXNIP) rs7212 polymorphism is associated with arterial stiffness in the Brazilian general population. J Hum Hypertens 2011; 26:340-2. [PMID: 22113441 DOI: 10.1038/jhh.2011.102] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Thioredoxin interacting protein plays a pivotal role in several important processes of cardiovascular homeostasis by functioning as a biological sensor for biomechanical and oxidative stress. However, the effects of genetic variants in the modulation of arterial stiffness are unknown. In this scenario, the present study evaluated the relationship between the TXNIP rs7212 polymorphism and arterial stiffness. In the overall sample and in the diabetic group, individuals carrying CG+GG genotypes had higher PWV values compared with CC genotype group (10.0 vs 9.8 m s (-1), P=0.03; 12.3 vs 11.2 m s(-1), P=0.01; respectively). Our findings indicated that the G allele may contribute to increased arterial stiffness in the Brazilian general population and suggest a possible interaction with diabetes.
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van den Akker J, VanBavel E, van Geel R, Matlung HL, Guvenc Tuna B, Janssen GMC, van Veelen PA, Boelens WC, De Mey JGR, Bakker ENTP. The redox state of transglutaminase 2 controls arterial remodeling. PLoS One 2011; 6:e23067. [PMID: 21901120 PMCID: PMC3161997 DOI: 10.1371/journal.pone.0023067] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 07/06/2011] [Indexed: 11/18/2022] Open
Abstract
While inward remodeling of small arteries in response to low blood flow, hypertension, and chronic vasoconstriction depends on type 2 transglutaminase (TG2), the mechanisms of action have remained unresolved. We studied the regulation of TG2 activity, its (sub) cellular localization, substrates, and its specific mode of action during small artery inward remodeling. We found that inward remodeling of isolated mouse mesenteric arteries by exogenous TG2 required the presence of a reducing agent. The effect of TG2 depended on its cross-linking activity, as indicated by the lack of effect of mutant TG2. The cell-permeable reducing agent DTT, but not the cell-impermeable reducing agent TCEP, induced translocation of endogenous TG2 and high membrane-bound transglutaminase activity. This coincided with inward remodeling, characterized by a stiffening of the artery. The remodeling could be inhibited by a TG2 inhibitor and by the nitric oxide donor, SNAP. Using a pull-down assay and mass spectrometry, 21 proteins were identified as TG2 cross-linking substrates, including fibronectin, collagen and nidogen. Inward remodeling induced by low blood flow was associated with the upregulation of several anti-oxidant proteins, notably glutathione-S-transferase, and selenoprotein P. In conclusion, these results show that a reduced state induces smooth muscle membrane-bound TG2 activity. Inward remodeling results from the cross-linking of vicinal matrix proteins, causing a stiffening of the arterial wall.
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Affiliation(s)
- Jeroen van den Akker
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Ed VanBavel
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Remon van Geel
- Department of Biomolecular Chemistry 271, Nijmegen Center for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands
| | - Hanke L. Matlung
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Bilge Guvenc Tuna
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - George M. C. Janssen
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, The Netherlands
- Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Peter A. van Veelen
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, The Netherlands
| | - Wilbert C. Boelens
- Department of Biomolecular Chemistry 271, Nijmegen Center for Molecular Life Sciences, Radboud University, Nijmegen, The Netherlands
| | - Jo G. R. De Mey
- Department of Pharmacology and Toxicology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Erik N. T. P. Bakker
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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Ngo DT, Stafford I, Sverdlov AL, Qi W, Wuttke RD, Zhang Y, Kelly DJ, Weedon H, Smith MD, Kennedy JA, Horowitz JD. Ramipril retards development of aortic valve stenosis in a rabbit model: mechanistic considerations. Br J Pharmacol 2011; 162:722-32. [PMID: 20958293 DOI: 10.1111/j.1476-5381.2010.01084.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND AND PURPOSE Aortic valve stenosis (AVS) is associated with significant cardiovascular morbidity and mortality. To date, no therapeutic modality has been shown to be effective in retarding AVS progression. We evaluated the effect of angiotensin-converting enzyme inhibition with ramipril on disease progression in a recently developed rabbit model of AVS. EXPERIMENTAL APPROACH The effects of 8 weeks of treatment with either vitamin D₂ at 25,000 IU for 4 days a week alone or in combination with ramipril (0.5 mg·kg⁻¹) on aortic valve structure and function were examined in New Zealand white rabbits. Echocardiographic aortic valve backscatter (AV(BS)) and aortic valve:outflow tract flow velocity ratio were utilized to quantify changes in valve structure and function. KEY RESULTS Treatment with ramipril significantly reduced AV(BS) and improved aortic valve :outflow tract flow velocity ratio. The intravalvular content of the pro-oxidant thioredoxin-interacting protein was decreased significantly with ramipril treatment. Endothelial function, as measured by asymmetric dimethylarginine concentrations and vascular responses to ACh, was improved significantly with ramipril treatment. CONCLUSIONS AND IMPLICATIONS Ramipril retards the development of AVS, reduces valvular thioredoxin-interacting protein accumulation and limits endothelial dysfunction in this animal model. These findings provide important insights into the mechanisms of AVS development and an impetus for future human studies of AVS retardation using an angiotensin-converting enzyme inhibitor.
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Affiliation(s)
- Doan Tm Ngo
- Department of Medicine, Vascular Disease and Therapeutics Research Group, Basil Hetzel Institute, The Queen Elizabeth Hospital, The University of Adelaide, South Australia, Australia
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Han B, Zhang X, Zhang Q, Zhao G, Wei J, Ma S, Zhu W, Wei M. Protective effects of salvianolate on microvascular flow in a porcine model of myocardial ischaemia and reperfusion. Arch Cardiovasc Dis 2011; 104:313-24. [PMID: 21693368 DOI: 10.1016/j.acvd.2011.02.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 02/14/2011] [Accepted: 02/22/2011] [Indexed: 11/25/2022]
Abstract
BACKGROUND Microvascular reflow is crucial for myocyte survival during ischaemia/reperfusion injury. AIMS We aimed to assess if salvianolate, a highly purified aqueous extract from Radix salviae miltiorrhizae, could improve impaired microvascular reflow induced by ischaemia/reperfusion injury, using a porcine closed-chest model. METHODS Left anterior descending coronary artery ligation was created by balloon occlusion for 2 h followed by reperfusion for 14 days. Salvianolate was administrated intravenously for 7 days at low dose (5 mg/kg/day), high dose (10 mg/kg/day) or high dose combined with one 20 mg intracoronary bolus injection just at the beginning of reperfusion. Control-group animals were only given the same volume of saline. RESULTS After 14 days of reperfusion, animals treated with high-dose salvianolate showed improved myocardial perfusion assessed by real-time myocardial contrast echocardiography and coloured microspheres. The beneficial effect was further supported by increased capillary density and decreased infarct size. All these effects eventually resulted in well-preserved cardiac function detected by echocardiography. Moreover, we also demonstrated that salvianolate administration was associated with elevated superoxide dismutase activity, thioredoxin activity and glutathione concentration, and reduced malondialdehyde concentration, which, in turn, resulted in a significant decrease in terminal deoxynucleotide transferase-mediated dUTP nick end labelling-positive cells and an increased ratio of Bcl-2 to Bax expression. CONCLUSION Intravenous salvianolate at a dose of 10 mg/kg/day for 7 days had significant beneficial effects on myocardial microvascular reflow, which were associated with decreased oxidative stress and apoptosis.
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Affiliation(s)
- Beibei Han
- Division of Cardiology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, China
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World C, Spindel ON, Berk BC. Thioredoxin-interacting protein mediates TRX1 translocation to the plasma membrane in response to tumor necrosis factor-α: a key mechanism for vascular endothelial growth factor receptor-2 transactivation by reactive oxygen species. Arterioscler Thromb Vasc Biol 2011; 31:1890-7. [PMID: 21636804 DOI: 10.1161/atvbaha.111.226340] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Thioredoxin-interacting protein (TXNIP) promotes inflammation in endothelial cells (EC) by binding to thioredoxin-1 (TRX1) in a redox-dependent manner. Formation of the TXNIP-TRX1 complex relieves inhibition of the apoptosis signal-regulating kinase 1-c-Jun N-terminal kinase-vascular cell adhesion molecule-1 pathway. Because TXNIP is an α-arrestin with numerous protein-protein interacting domains, we hypothesized that TXNIP-TRX1 trafficking should alter function of EC exposed to reactive oxygen species (ROS). METHODS AND RESULTS In response to physiological levels of ROS (10 ng/mL tumor necrosis factor-α and 30 μmol/L H(2)O(2)), TXNIP-TRX1 translocated to the plasma membrane in human umbilical vein EC, with a peak at 30 minutes, as measured by immunofluorescence colocalization with vascular endothelial-cadherin, cell fractionation, and membrane sheet assay. TXNIP-mediated translocation of TRX1 to the membrane required TXNIP and TRX1 binding, as evidenced by inability of the ROS-insensitive TXNIP-Cys247Ser mutant to promote membrane localization. Vascular endothelial growth factor signaling required TXNIP, as shown by significant decreases in plasma membrane tyrosine phosphorylation and EC migration after TRX1 knockdown. Furthermore, TXNIP knockdown increased human umbilical vein EC apoptosis induced by tumor necrosis factor. Rescue with TXNIP-wild-type but not TXNIP-Cys247Ser prevented cell death. CONCLUSIONS These findings suggest a novel role for the TXNIP-TRX1 complex to enable inflammation by promoting EC survival and vascular endothelial growth factor signaling under conditions of physiological oxidative stress.
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Affiliation(s)
- Cameron World
- Department of Medicine, University of Rochester School of Medicine and Dentistry, NY 14642, USA
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Sozmen NN, Tuncay E, Bilginoglu A, Turan B. Profound cardioprotection with timolol in a female rat model of aging-related altered left ventricular function. Can J Physiol Pharmacol 2011; 89:277-88. [DOI: 10.1139/y11-018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Increasing evidence shows a marked beneficial effect with β-blockers in heart dysfunction via scavenging reactive oxygen species. Previously we showed that chronic treatment with either timolol or propranolol possessed similar beneficial effects for heart function in male rats as age increased, whereas only timolol exerted similar benefits in female rats. Therefore, in this study, we aimed first to examine the cellular bases for age-related alterations in excitation–contraction coupling in ventricular myocytes from female rats and, second, to investigate the hypothesis that age-related changes in [Ca2+]ihomeostasis and receptor-mediated system can be prevented with chronic timolol treatment. Chronic timolol treatment of 3-month-old female rats abolished age-related decrease in left ventricular developed pressure and the attenuated responses to β-adrenoreceptor stimulation. It also normalized the altered parameters of [Ca2+]itransients, decreased Ca2+loading of sarcoplasmic reticulum and increased basal [Ca2+]i, and decreased L-type Ca2+currents in 12-month-old female rats compared with the 3-month-old group. Adenylyl cyclase activity, β-adrenoreceptor affinity to its agonist, and β-adrenoreceptor density of the 12-month-old group are normalized to those of the 3-month-old group. Moreover, timolol treatment prevented dysfunction of the antioxidant system, including increased lipid peroxidation, decreased ratio of reduced glutathione to oxidized glutathione, and decreased activities of thioredoxin reductase and glucose-6-phosphate dehydrogenase, in the left ventricle of hearts from the 12-month-old group. Our data confirmed that aging-related early myocardial impairment is primarily related to a dysfunctional antioxidant system and impairment of Ca2+homeostasis, which can be prevented with chronic timolol treatment.
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Affiliation(s)
- Nazli N. Sozmen
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Erkan Tuncay
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Ayca Bilginoglu
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Belma Turan
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara, Turkey
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Rodrigo R, González J, Paoletto F. The role of oxidative stress in the pathophysiology of hypertension. Hypertens Res 2011; 34:431-40. [PMID: 21228777 DOI: 10.1038/hr.2010.264] [Citation(s) in RCA: 254] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hypertension is considered to be the most important risk factor in the development of cardiovascular disease. An increasing body of evidence suggests that oxidative stress, which results in an excessive generation of reactive oxygen species (ROS), has a key role in the pathogenesis of hypertension. The modulation of the vasomotor system involves ROS as mediators of vasoconstriction induced by angiotensin II, endothelin-1 and urotensin-II, among others. The bioavailability of nitric oxide (NO), which is a major vasodilator, is highly dependent on the redox status. Under physiological conditions, low concentrations of intracellular ROS have an important role in the normal redox signaling maintaining vascular function and integrity. However, under pathophysiological conditions, increased levels of ROS contribute to vascular dysfunction and remodeling through oxidative damage. In human hypertension, an increase in the production of superoxide anions and hydrogen peroxide, a decrease in NO synthesis and a reduction in antioxidant bioavailability have been observed. In turn, antioxidants are reducing agents that can neutralize these oxidative and otherwise damaging biomolecules. The use of antioxidant vitamins, such as vitamins C and E, has gained considerable interest as protecting agents against vascular endothelial damage. Available data support the role of these vitamins as effective antioxidants that can counteract ROS effects. This review discusses the mechanisms involved in ROS generation, the role of oxidative stress in the pathogenesis of vascular damage in hypertension, and the possible therapeutic strategies that could prevent or treat this disorder.
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Affiliation(s)
- Ramón Rodrigo
- Renal Pathophysiology Laboratory, Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.
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Park KJ, Kim YJ, Choi EJ, Park NK, Kim GH, Kim SM, Lee SY, Bae JW, Hwang KK, Kim DW, Cho MC. Expression pattern of the thioredoxin system in human endothelial progenitor cells and endothelial cells under hypoxic injury. Korean Circ J 2010; 40:651-8. [PMID: 21267388 PMCID: PMC3025339 DOI: 10.4070/kcj.2010.40.12.651] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2010] [Revised: 06/21/2010] [Accepted: 08/09/2010] [Indexed: 11/11/2022] Open
Abstract
Background and Objectives The thioredoxin (TRx) system is a ubiquitous thiol oxidoreductase pathway that regulates cellular reduction/oxidation status. Although endothelial cell (EC) hypoxic damage is one of the important pathophysiologic mechanisms of ischemic heart disease, its relationship to the temporal expression pattern of the TRx system has not yet been elucidated well. The work presented here was performed to define the expression pattern of the TRx system and its correlation with cellular apoptosis in EC lines in hypoxic stress. These results should provide basic clues for applying aspects of the TRx system as a therapeutic molecule in cardiovascular diseases. Subjects and Methods Hypoxia was induced with 1% O2, generated in a BBL GasPak Pouch (Becton Dickinson, Franklin Lakes, NJ, USA) in human endothelial progenitor cells (hEPC) and human umbilical vein endothelial cells (HUVEC). Apoptosis of these cells was confirmed by Annexin-V: Phycoerythrin flow cytometry. Expression patterns of TRx; TRx reductase; TRx interacting protein; and survival signals, such as Bcl-2 and Bax, in ECs under hypoxia were checked. Results Apoptosis was evident after hypoxia in the two cell types. Higher TRx expression was observed at 12 hours after hypoxia in hEPCs and 12, 36, 72 hours of hypoxia in HUVECs. The expression patterns of the TRx system components showed correlation with EC apoptosis and cell survival markers. Conclusion Hypoxia induced significant apoptosis and its related active changes of the TRx system were evident in human EC lines. If the cellular impact of TRx expression pattern in various cardiovascular tissues under hypoxia or oxidative stress was studied meticulously, the TRx system could be applied as a new therapeutic target in cardiovascular diseases, such as ischemic heart disease or atherosclerosis.
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Affiliation(s)
- Keon-Jae Park
- Division of Cardiology, Department of Internal Medicine, Chungbuk National University School of Medicine, Cheongju, Korea
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Adluri RS, Thirunavukkarasu M, Zhan L, Akita Y, Samuel SM, Otani H, Ho YS, Maulik G, Maulik N. Thioredoxin 1 enhances neovascularization and reduces ventricular remodeling during chronic myocardial infarction: a study using thioredoxin 1 transgenic mice. J Mol Cell Cardiol 2010; 50:239-47. [PMID: 21074540 DOI: 10.1016/j.yjmcc.2010.11.002] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 10/27/2010] [Accepted: 11/02/2010] [Indexed: 12/18/2022]
Abstract
Oxidative stress plays a crucial role in disruption of neovascularization by alterations in thioredoxin 1 (Trx1) expression and its interaction with other proteins after myocardial infarction (MI). We previously showed that Trx1 has angiogenic properties, but the possible therapeutic significance of overexpressing Trx1 in chronic MI has not been elucidated. Therefore, we explored the angiogenic and cardioprotective potential of Trx1 in an in vivo MI model using transgenic mice overexpressing Trx1. Wild-type (W) and Trx1 transgenic (Trx1(Tg/+)) mice were randomized into W sham (WS), Trx1(Tg/+) sham (TS), WMI, and TMI. MI was induced by permanent occlusion of LAD coronary artery. Hearts from mice overexpressing Trx1 exhibited reduced fibrosis and oxidative stress and attenuated cardiomyocyte apoptosis along with increased vessel formation compared to WMI. We found significant inhibition of Trx1 regulating proteins, TXNIP and AKAP 12, and increased p-Akt, p-eNOS, p-GSK-3β, HIF-1α, β-catenin, VEGF, Bcl-2, and survivin expression in TMI compared to WMI. Echocardiography performed 30days after MI revealed significant improvement in myocardial functions in TMI compared to WMI. Our study identifies a potential role for Trx1 overexpression and its association with its regulatory proteins TXNIP, AKAP12, and subsequent activation of Akt/GSK-3β/β-catenin/HIF-1α-mediated VEGF and eNOS expression in inducing angiogenesis and reduced ventricular remodeling. Hence, Trx1 and other proteins identified in our study may prove to be potential therapeutic targets in the treatment of ischemic heart disease.
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Affiliation(s)
- Ram Sudheer Adluri
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, Farmington Avenue, Farmington, CT, USA
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Ma ZC, Hong Q, Wang YG, Tan HL, Xiao CR, Liang QD, Zhang BL, Gao Y. Ferulic acid protects human umbilical vein endothelial cells from radiation induced oxidative stress by phosphatidylinositol 3-kinase and extracellular signal-regulated kinase pathways. Biol Pharm Bull 2010; 33:29-34. [PMID: 20045931 DOI: 10.1248/bpb.33.29] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ferulic acid (FA) has been demonstrated to have a remarkable antioxidant activity, the mechanism of FA of protecting human umbilical vein endothelial cells (HUVECs) from radiation induced oxidative stress was investigated in the present study. The oxidative protection of FA was assessed by cellular glutathione (GSH) content, nicotinamide adenine dinucleotide phosphate (NADPH) levels, and reactive oxygen species (ROS) analysis. Nuclear factor erythroid 2-related factor 2 (Nrf2) nuclear translocation was detected using Western blotting. The upstream signaling pathway involved in FA mediated Nrf2 activation was determined by signaling inhibitors. FA significantly increased the transcription of antioxidant related genes such as GCLC (glutamate-cysteine ligase catalytic subunit), GCLM (glutamate-cysteine ligase regulatory subunit), NQO1 (NADPH quinone oxidoreductase-1) and heme oxygenase-1 (HO-1) mRNA in radiated cells, and these changes involved in a significant increase of the intracellular GSH content and the expression of NAPDH. FA evidently promoted Nrf2 translocation into nuclei and increased the intracellular GSH and NADPH levels in radiated cells. Phosphatidylinositol 3-kinase (PI3K) and extracellular signal regulated kinase (ERK) pathways were associated with FA-induced Nrf2 activation. The results suggested that FA-induced Nrf2 activation play key role in cytoprotective effect of FA against oxidative stress via PI3K and ERK signaling pathways.
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Affiliation(s)
- Zeng-Chun Ma
- Beijing Institute of Radiation Medicine, Beijing, China
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Niu GJ, Tang GD, Liang ZH, Zhong WY, Huang WF. Effects of melatonin on Trx-1 expression in the lungs of rats with acute necrotizing pancreatitis. Shijie Huaren Xiaohua Zazhi 2010; 18:550-556. [DOI: 10.11569/wcjd.v18.i6.550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of thioredoxin-1 (Trx-1) in the lungs of rats with L-arginine (L-Arg)-induced acute necrotizing pancreatitis (ANP) and assess the effects of melatonin on Trx-1 expression.
METHODS: Seventy-two male Sprague-Dawley rats were randomly divided into three groups: normal control group, model control group and melatonin intervention group. The ANP model group was intraperitoneally injected three times with 6% L-Arg at a dose of 25 mL/kg body weight at an interval of 1 h to induce ANP. The normal control group was intraperitoneally injected with equal volumes of normal saline. The melatonin intervention group was injected intraperitoneally with 0.25% melatonin at a dose of 20 mL/kg body weight half an hour before ANP induction. Rats were executed at 6, 12 and 24 hours after last L-Arg injection. The expression of Trx-1 in the lungs was detected by immunohistochemistry. The pathological changes in the pancreas and lungs were analyzed and scored according to Kusser's and Lei's criteria, respectively. The contents of serum Trx-1 and amylase were measured.
RESULTS: At 6, 12 and 24 hours after last L-Arg injection, the pathological changes in the pancreas and lungs in the model control group were more severe than those in the normal control group (all P < 0.01). However, the pathological changes in the pancreas and lungs in the melatonin intervention group were milder than those in the model control group (P < 0.01 or 0.05). At 24 hours, the content of serum amylase in the model control group was significantly higher than that in the normal control group (4 598 U/L ± 2 274 U/L vs 2 033 U/L ± 863 U/L, P < 0.01). In contrast, the content of serum amylase in the melatonin intervention group was lower than that in the model control group (3 990 U/L ± 1 146 U/L vs 4 598 U/L ± 2 274 U/L, P < 0.05). Compared to the normal control group, serum Trx-1 contents in the model control group significantly decreased at 6 and 12 hours but significantly increased at 24 hours. The contents of serum Trx-1 in melatonin intervention group at 6 and 12 hours were significantly higher than those in the model control group.
CONCLUSION: Lung injury is closely related to pancreatic injury in ANP. The expression of Trx-1 in the lungs of rats with ANP increases significantly. Overexpression of Trx-1 in the lungs is closely associated with the development of ANP and acute pancreatitis-associated lung injury. Melatonin can, to a certain extent, alter the expression of Trx-1 and reduce pancreatic and pulmonary injury in ANP in rats.
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Transcriptional regulation of cytokines and oxidative stress by gallic acid in human THP-1 monocytes. Cytokine 2009; 49:229-34. [PMID: 20015662 DOI: 10.1016/j.cyto.2009.11.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 10/08/2009] [Accepted: 11/05/2009] [Indexed: 11/23/2022]
Abstract
Increased inflammation/prooxidation has been linked not only to Type 2 diabetes but also in prediabetes state. In this study we investigated hyperglycemia-mediated proinflammatory/prooxidant effects in THP-1 monocytes and tested whether gallic acid could attenuate changes in gene expression induced by high-glucose. Cells were treated either with 5.5mM glucose or 25mM glucose in the absence and presence of gallic acid. While oxidative DNA damage was assessed by COMET assay, GSH and GSSG levels were estimated fluorimetrically. Gene expression patterns were determined by RT-PCR. Cells treated with high-glucose showed increased DNA damage and glutathione depletion and this was attenuated in the presence of gallic acid. High-glucose treated cells exhibited increased mRNA expression of TNF-alpha, IL-6, NADPH oxidase and TXNIP and gallic acid attenuated these proinflammatory and prooxidant effects. Cells treated with high-glucose revealed a deficiency in mounting SOCS-3 expression and gallic acid upregulates this feedback regulatory signal. Gallic acid attenuates DNA damage, maintains glutathione turnover, and suppresses hyperglycemia-induced activation of proinflammatory and prooxidant gene expression. Gallic acid beneficially modulate transcription of functionally diverse groups of genes and its regulation of SOCS-3 and TXNIP signals is a newly identified mechanism that has therapeutic implications.
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Grützner A, Garcia-Manyes S, Kötter S, Badilla CL, Fernandez JM, Linke WA. Modulation of titin-based stiffness by disulfide bonding in the cardiac titin N2-B unique sequence. Biophys J 2009; 97:825-34. [PMID: 19651040 DOI: 10.1016/j.bpj.2009.05.037] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 05/10/2009] [Accepted: 05/26/2009] [Indexed: 01/05/2023] Open
Abstract
The giant protein titin is responsible for the elasticity of nonactivated muscle sarcomeres. Titin-based passive stiffness in myocardium is modulated by titin-isoform switching and protein-kinase (PK)A- or PKG-dependent titin phosphorylation. Additional modulatory effects on titin stiffness may arise from disulfide bonding under oxidant stress, as many immunoglobulin-like (Ig-)domains in titin's spring region have a potential for S-S formation. Using single-molecule atomic force microscopy (AFM) force-extension measurements on recombinant Ig-domain polyprotein constructs, we show that titin Ig-modules contain no stabilizing disulfide bridge, contrary to previous belief. However, we demonstrate that the human N2-B-unique sequence (N2-B(us)), a cardiac-specific, physiologically extensible titin segment comprising 572 amino-acid residues, contains up to three disulfide bridges under oxidizing conditions. AFM force spectroscopy on recombinant N2-B(us) molecules demonstrated a much shorter contour length in the absence of a reducing agent than in its presence, consistent with intramolecular S-S bonding. In stretch experiments on isolated human heart myofibrils, the reducing agent thioredoxin lowered titin-based stiffness to a degree that could be explained (using entropic elasticity theory) by altered extensibility solely of the N2-B(us). We conclude that increased oxidant stress can elevate titin-based stiffness of cardiomyocytes, which may contribute to the global myocardial stiffening frequently seen in the aging or failing heart.
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Affiliation(s)
- Anika Grützner
- Physiology and Biophysics Unit, University of Münster, Münster, Germany
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Li J, Ichikawa T, Janicki JS, Cui T. Targeting the Nrf2 pathway against cardiovascular disease. Expert Opin Ther Targets 2009; 13:785-94. [PMID: 19530984 DOI: 10.1517/14728220903025762] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nuclear factor E2-related factor 2 (Nrf2) is a transcription factor that controls the basal and inducible expression of a battery of antioxidant genes and other cytoprotective Phase II detoxifying enzymes. Nrf2 is ubiquitously expressed in the cardiovascular system. While several Nrf2 downstream genes have been implicated in protection against the pathogenesis of cardiovascular diseases, the precise role of Nrf2 in the cardiovascular system remains to be elucidated. Nevertheless, mounting evidence has revealed that Nrf2 is a critical regulator of cardiovascular homeostasis via the suppression of oxidative stress, a major causative factor for the development and progression of cardiovascular diseases. Therefore, Nrf2 promises to be an attractive therapeutic target for the treatment of cardiovascular disease. Herein, we review the current literature that suggests that Nrf2 is a valuable therapeutic target for cardiovascular disease, as well as experiments that illustrate the mechanisms of Nrf2 cardioprotection.
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Affiliation(s)
- Jinqing Li
- University of South Carolina School of Medicine, Department of Cell Biology and Anatomy, 6439 Garners Ferry Road, Columbia, SC 29208, USA
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