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Carlström M, Weitzberg E, Lundberg JO. Nitric Oxide Signaling and Regulation in the Cardiovascular System: Recent Advances. Pharmacol Rev 2024; 76:1038-1062. [PMID: 38866562 DOI: 10.1124/pharmrev.124.001060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/30/2024] [Accepted: 05/29/2024] [Indexed: 06/14/2024] Open
Abstract
Nitric oxide (NO) from endothelial NO synthase importantly contributes to vascular homeostasis. Reduced NO production or increased scavenging during disease conditions with oxidative stress contribute to endothelial dysfunction and NO deficiency. In addition to the classical enzymatic NO synthases (NOS) system, NO can also be generated via the nitrate-nitrite-NO pathway. Dietary and pharmacological approaches aimed at increasing NO bioactivity, especially in the cardiovascular system, have been the focus of much research since the discovery of this small gaseous signaling molecule. Despite wide appreciation of the biological role of NOS/NO signaling, questions still remain about the chemical nature of NOS-derived bioactivity. Recent studies show that NO-like bioactivity can be efficiently transduced by mobile NO-ferroheme species, which can transfer between proteins, partition into a hydrophobic phase, and directly activate the soluble guanylyl cyclase-cGMP-protein kinase G pathway without intermediacy of free NO. Moreover, interaction between red blood cells and the endothelium in the regulation of vascular NO homeostasis have gained much attention, especially in conditions with cardiometabolic disease. In this review we discuss both classical and nonclassical pathways for NO generation in the cardiovascular system and how these can be modulated for therapeutic purposes. SIGNIFICANCE STATEMENT: After four decades of intensive research, questions persist about the transduction and control of nitric oxide (NO) synthase bioactivity. Here we discuss NO signaling in cardiovascular health and disease, highlighting new findings, such as the important role of red blood cells in cardiovascular NO homeostasis. Nonclassical signaling modes, like the nitrate-nitrite-NO pathway, and therapeutic opportunities related to the NO system are discussed. Existing and potential pharmacological treatments/strategies, as well as dietary components influencing NO generation and signaling are covered.
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Affiliation(s)
- Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden (M.C., E.W., J.O.L.); and Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden (E.W.)
| | - Eddie Weitzberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden (M.C., E.W., J.O.L.); and Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden (E.W.)
| | - Jon O Lundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden (M.C., E.W., J.O.L.); and Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden (E.W.)
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Zhang L, Troccoli CI, Mateo-Victoriano B, Lincheta LM, Jackson E, Shu P, Plastini T, Tao W, Kwon D, Chen X, Sharma J, Jorda M, Gulley JL, Bilusic M, Lockhart AC, Beuve A, Rai P. The soluble guanylyl cyclase pathway is inhibited to evade androgen deprivation-induced senescence and enable progression to castration resistance. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.03.537252. [PMID: 37205442 PMCID: PMC10187243 DOI: 10.1101/2023.05.03.537252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Castration-resistant prostate cancer (CRPC) is fatal and therapeutically under-served. We describe a novel CRPC-restraining role for the vasodilatory soluble guanylyl cyclase (sGC) pathway. We discovered that sGC subunits are dysregulated during CRPC progression and its catalytic product, cyclic GMP (cGMP), is lowered in CRPC patients. Abrogating sGC heterodimer formation in castration-sensitive prostate cancer (CSPC) cells inhibited androgen deprivation (AD)-induced senescence, and promoted castration-resistant tumor growth. We found sGC is oxidatively inactivated in CRPC. Paradoxically, AD restored sGC activity in CRPC cells through redox-protective responses evoked to protect against AD-induced oxidative stress. sGC stimulation via its FDA-approved agonist, riociguat, inhibited castration-resistant growth, and the anti-tumor response correlated with elevated cGMP, indicating on-target sGC activity. Consistent with known sGC function, riociguat improved tumor oxygenation, decreasing the PC stem cell marker, CD44, and enhancing radiation-induced tumor suppression. Our studies thus provide the first evidence for therapeutically targeting sGC via riociguat to treat CRPC. Statement of significance Prostate cancer is the second highest cancer-related cause of death for American men. Once patients progress to castration-resistant prostate cancer, the incurable and fatal stage, there are few viable treatment options available. Here we identify and characterize a new and clinically actionable target, the soluble guanylyl cyclase complex, in castration-resistant prostate cancer. Notably we find that repurposing the FDA-approved and safely tolerated sGC agonist, riociguat, decreases castration-resistant tumor growth and re-sensitizes these tumors to radiation therapy. Thus our study provides both new biology regarding the origins of castration resistance as well as a new and viable treatment option.
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3
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Manilall A, Mokotedi L, Gunter S, Le Roux R, Fourie S, Flanagan CA, Millen AME. Increased protein phosphatase 5 expression in inflammation-induced left ventricular dysfunction in rats. BMC Cardiovasc Disord 2022; 22:539. [PMID: 36494772 PMCID: PMC9732989 DOI: 10.1186/s12872-022-02977-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 11/25/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Titin phosphorylation contributes to left ventricular (LV) diastolic dysfunction. The independent effects of inflammation on the molecular pathways that regulate titin phosphorylation are unclear. METHODS We investigated the effects of collagen-induced inflammation and subsequent tumor necrosis factor-α (TNF-α) inhibition on mRNA expression of genes involved in regulating titin phosphorylation in 70 Sprague-Dawley rats. LV diastolic function was assessed with echocardiography. Circulating inflammatory markers were quantified by enzyme-linked immunosorbent assay and relative LV gene expression was assessed by Taqman® polymerase chain reaction. Differences in normally distributed variables between the groups were determined by two-way analysis of variance (ANOVA), followed by Tukey post-hoc tests. For non-normally distributed variables, group differences were determined by Kruskal-Wallis tests. RESULTS Collagen inoculation increased LV relative mRNA expression of vascular cell adhesion molecule 1 (VCAM1), pentraxin 3 (PTX3), and inducible nitric oxide synthase (iNOS) compared to controls, indicating local microvascular inflammation. Collagen inoculation decreased soluble guanylate cyclase alpha-2 (sGCα2) and soluble guanylate cyclase beta-2 (sGCβ2) expression, suggesting downregulation of nitric oxide-soluble guanylate cyclase-cyclic guanosine monophosphate (NO-sGC-cGMP) signaling. Inhibiting TNF-α prevented collagen-induced changes in VCAM1, iNOS, sGCα2 and sGCβ2 expression. Collagen inoculation increased protein phosphatase 5 (PP5) expression. Like LV diastolic dysfunction, increased PP5 expression was not prevented by TNF-α inhibition. CONCLUSION Inflammation-induced LV diastolic dysfunction may be mediated by a TNF-α-independent increase in PP5 expression and dephosphorylation of the N2-Bus stretch element of titin, rather than by TNF-α-induced downregulation of NO-sGC-cGMP pathway-dependent titin phosphorylation. The steady rise in number of patients with inflammation-induced diastolic dysfunction, coupled with low success rates of current therapies warrants a better understanding of the systemic signals and molecular pathways responsible for decreased titin phosphorylation in development of LV diastolic dysfunction. The therapeutic potential of inhibiting PP5 upregulation in LV diastolic dysfunction requires investigation.
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Affiliation(s)
- Ashmeetha Manilall
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Lebogang Mokotedi
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Sulè Gunter
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Regina Le Roux
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Serena Fourie
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Colleen A. Flanagan
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
| | - Aletta M. E. Millen
- grid.11951.3d0000 0004 1937 1135Integrated Molecular Physiology Research Initiative, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
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Kurup AH, Patras A, Bansode RR, Pendyala B, Ravi R, Vergne MJ. Influence of UV-A irradiation on the selected nutrient composition and volatile profiling of whole milk: Safety and quality evaluation. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Lundberg JO, Weitzberg E. Nitric oxide signaling in health and disease. Cell 2022; 185:2853-2878. [DOI: 10.1016/j.cell.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 10/16/2022]
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Duszyn M, Świeżawska-Boniecka B, Wong A, Jaworski K, Szmidt-Jaworska A. In Vitro Characterization of Guanylyl Cyclase BdPepR2 from Brachypodium distachyon Identified through a Motif-Based Approach. Int J Mol Sci 2021; 22:ijms22126243. [PMID: 34200573 PMCID: PMC8228174 DOI: 10.3390/ijms22126243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 12/31/2022] Open
Abstract
In recent years, cyclic guanosine 3′,5′-cyclic monophosphate (cGMP) and guanylyl cyclases (GCs), which catalyze the formation of cGMP, were implicated in a growing number of plant processes, including plant growth and development and the responses to various stresses. To identify novel GCs in plants, an amino acid sequence of a catalytic motif with a conserved core was designed through bioinformatic analysis. In this report, we describe the performed analyses and consider the changes caused by the introduced modification within the GC catalytic motif, which eventually led to the description of a plasma membrane receptor of peptide signaling molecules—BdPepR2 in Brachypodium distachyon. Both in vitro GC activity studies and structural and docking analyses demonstrated that the protein could act as a GC and contains a highly conserved 14-aa GC catalytic center. However, we observed that in the case of BdPepR2, this catalytic center is altered where a methionine instead of the conserved lysine or arginine residues at position 14 of the motif, conferring higher catalytic activity than arginine and alanine, as confirmed through mutagenesis studies. This leads us to propose the expansion of the GC motif to cater for the identification of GCs in monocots. Additionally, we show that BdPepR2 also has in vitro kinase activity, which is modulated by cGMP.
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Affiliation(s)
- Maria Duszyn
- Chair of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska St. 1, PL 87-100 Torun, Poland; (B.Ś.-B.); (K.J.); (A.S.-J.)
- Correspondence:
| | - Brygida Świeżawska-Boniecka
- Chair of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska St. 1, PL 87-100 Torun, Poland; (B.Ś.-B.); (K.J.); (A.S.-J.)
| | - Aloysius Wong
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou 325060, China;
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Ouhai, Wenzhou 325060, China
| | - Krzysztof Jaworski
- Chair of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska St. 1, PL 87-100 Torun, Poland; (B.Ś.-B.); (K.J.); (A.S.-J.)
| | - Adriana Szmidt-Jaworska
- Chair of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska St. 1, PL 87-100 Torun, Poland; (B.Ś.-B.); (K.J.); (A.S.-J.)
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Majewska AM, Mostek A. Gel-based fluorescent proteomic tools for investigating cell redox signaling. A mini-review. Electrophoresis 2021; 42:1378-1387. [PMID: 33783010 DOI: 10.1002/elps.202000389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/26/2021] [Accepted: 03/08/2021] [Indexed: 11/07/2022]
Abstract
The specific chemical reactivity of thiol groups makes protein cysteines susceptible to reactions with reactive oxygen species (ROS) and reactive nitrogen species (RNS) resulting in the formation of various reversible and irreversible oxidative post-translational modifications (oxPTMs). This review highlights a number of gel-based redox proteomic approaches to detect protein oxPTMs, with particular emphasis on S-nitrosylation, which we believe are currently one of the most accurate way to analyze changes in the redox status of proteins. The information collected in this review relates to the recent progress regarding methods for the enrichment and identification of redox-modified proteins, with an emphasis on fluorescent gel proteomics. Gel-based fluorescent proteomic strategies are low-cost and easy-to-use tools for investigating the thiol proteome and can provide substantial information on redox signaling.
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Affiliation(s)
- Anna M Majewska
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Agnieszka Mostek
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
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Gong L, Zhang Y, Liu C, Zhang M, Han S. Application of Radiosensitizers in Cancer Radiotherapy. Int J Nanomedicine 2021; 16:1083-1102. [PMID: 33603370 PMCID: PMC7886779 DOI: 10.2147/ijn.s290438] [Citation(s) in RCA: 181] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/19/2021] [Indexed: 12/11/2022] Open
Abstract
Radiotherapy (RT) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. Although great success has been achieved on radiotherapy, there is still an intractable challenge to enhance radiation damage to tumor tissue and reduce side effects to healthy tissue. Radiosensitizers are chemicals or pharmaceutical agents that can enhance the killing effect on tumor cells by accelerating DNA damage and producing free radicals indirectly. In most cases, radiosensitizers have less effect on normal tissues. In recent years, several strategies have been exploited to develop radiosensitizers that are highly effective and have low toxicity. In this review, we first summarized the applications of radiosensitizers including small molecules, macromolecules, and nanomaterials, especially those that have been used in clinical trials. Second, the development states of radiosensitizers and the possible mechanisms to improve radiosensitizers sensibility are reviewed. Third, the challenges and prospects for clinical translation of radiosensitizers in oncotherapy are presented.
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Affiliation(s)
- Liuyun Gong
- Department of Oncology, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, People’s Republic of China
| | - Yujie Zhang
- School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, People’s Republic of China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education, Xi’an, Shaanxi, 710061, People’s Republic of China
| | - Chengcheng Liu
- School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, People’s Republic of China
| | - Mingzhen Zhang
- School of Basic Medical Sciences, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, People’s Republic of China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education, Xi’an, Shaanxi, 710061, People’s Republic of China
| | - Suxia Han
- Department of Oncology, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, Shaanxi, 710061, People’s Republic of China
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Ussery EJ, Nielsen KM, Simmons D, Pandelides Z, Mansfield C, Holdway D. An 'omics approach to investigate the growth effects of environmentally relevant concentrations of guanylurea exposure on Japanese medaka (Oryzias latipes). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 232:105761. [PMID: 33550114 DOI: 10.1016/j.aquatox.2021.105761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 01/11/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Metformin is a widely prescribed pharmaceutical used in the treatment of numerous human health disorders, including Type 2 Diabetes, and as a results of its widespread use, metformin is thought to be the most prevalent pharmaceutical in the aquatic environment by weight. The removal of metformin during the water treatment process is directly related to the formation of its primary degradation product, guanylurea, generally present at higher concentrations in surface waters relative to metformin. Growth effects observed in 28-day early life stage (ELS) Japanese medaka exposed to guanylurea were found to be similar to growth effects in 28-day ELS medaka exposed to metformin; however, effect concentrations were orders of magnitude below those of metformin. The present study uses a multi-omics approach to investigate potential mechanisms by which low-level, 1 ng · L-1 nominal, guanylurea exposure may lead to altered growth in 28-day post hatch medaka via shotgun metabolomics and proteomics and qPCR. Specifically, analyses show 6 altered metabolites, 66 altered proteins and 2 altered genes. Collectively, metabolomics, proteomics, and gene expression data (using qPCR) indicate that developmental exposure to guanylurea exposure alters a number of important pathways related to the overall health of ELS fish, including biomolecule metabolism, cellular energetics, nervous system function/development, cellular communication and structure, and detoxification of reactive oxygen species, among others. To our knowledge, this is the first study to both report the molecular level effects of guanylurea on non-target aquatic organisms, and to relate molecular-level changes to whole organism effects.
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Affiliation(s)
- Erin J Ussery
- Faculty of Science, Ontario Tech University, 2000 Simcoe St.N., Oshawa, Ontario, L1H 7K4, Canada.
| | - Kristin M Nielsen
- University of Texas at Austin Marine Science Institute, 750 Channel View Drive, Port Aransas, TX, 78373, USA
| | - Denina Simmons
- Faculty of Science, Ontario Tech University, 2000 Simcoe St.N., Oshawa, Ontario, L1H 7K4, Canada
| | - Zacharias Pandelides
- Faculty of Science, Ontario Tech University, 2000 Simcoe St.N., Oshawa, Ontario, L1H 7K4, Canada
| | - Chad Mansfield
- Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, 1 Bear Place #97178, Waco, TX, 76798, USA
| | - Douglas Holdway
- Faculty of Science, Ontario Tech University, 2000 Simcoe St.N., Oshawa, Ontario, L1H 7K4, Canada
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Maturation, inactivation, and recovery mechanisms of soluble guanylyl cyclase. J Biol Chem 2021; 296:100336. [PMID: 33508317 PMCID: PMC7949132 DOI: 10.1016/j.jbc.2021.100336] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 11/22/2022] Open
Abstract
Soluble guanylate cyclase (sGC) is a heme-containing heterodimeric enzyme that generates many molecules of cGMP in response to its ligand nitric oxide (NO); sGC thereby acts as an amplifier in NO-driven biological signaling cascades. Because sGC helps regulate the cardiovascular, neuronal, and gastrointestinal systems through its cGMP production, boosting sGC activity and preventing or reversing sGC inactivation are important therapeutic and pharmacologic goals. Work over the last two decades is uncovering the processes by which sGC matures to become functional, how sGC is inactivated, and how sGC is rescued from damage. A diverse group of small molecules and proteins have been implicated in these processes, including NO itself, reactive oxygen species, cellular heme, cell chaperone Hsp90, and various redox enzymes as well as pharmacologic sGC agonists. This review highlights their participation and provides an update on the processes that enable sGC maturation, drive its inactivation, or assist in its recovery in various settings within the cell, in hopes of reaching a better understanding of how sGC function is regulated in health and disease.
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Jeanne A, Sarazin T, Charlé M, Kawecki C, Kauskot A, Hedtke T, Schmelzer CEH, Martiny L, Maurice P, Dedieu S. Towards the Therapeutic Use of Thrombospondin 1/CD47 Targeting TAX2 Peptide as an Antithrombotic Agent. Arterioscler Thromb Vasc Biol 2021; 41:e1-e17. [PMID: 33232198 DOI: 10.1161/atvbaha.120.314571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE TSP-1 (thrombospondin 1) is one of the most expressed proteins in platelet α-granules and plays an important role in the regulation of hemostasis and thrombosis. Interaction of released TSP-1 with CD47 membrane receptor has been shown to regulate major events leading to thrombus formation, such as, platelet adhesion to vascular endothelium, nitric oxide/cGMP (cyclic guanosine monophosphate) signaling, platelet activation as well as aggregation. Therefore, targeting TSP-1:CD47 axis may represent a promising antithrombotic strategy. Approach and Results: A CD47-derived cyclic peptide was engineered, namely TAX2, that targets TSP-1 and selectively prevents TSP-1:CD47 interaction. Here, we demonstrate for the first time that TAX2 peptide strongly decreases platelet aggregation and interaction with collagen under arterial shear conditions. TAX2 also delays time for complete thrombotic occlusion in 2 mouse models of arterial thrombosis following chemical injury, while Thbs1-/- mice recapitulate TAX2 effects. Importantly, TAX2 administration is not associated with increased bleeding risk or modification of hematologic parameters. CONCLUSIONS Overall, this study sheds light on the major contribution of TSP-1:CD47 interaction in platelet activation and thrombus formation while putting forward TAX2 as an innovative antithrombotic agent with high added-value.
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Affiliation(s)
- Albin Jeanne
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
- SATT Nord, Lille, France (A.J.)
- Apmonia Therapeutics, Reims, France (A.J., S.D.)
| | - Thomas Sarazin
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
| | - Magalie Charlé
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
| | - Charlotte Kawecki
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
| | - Alexandre Kauskot
- HITh, UMR_S 1176, INSERM Univ. Paris-Sud, Université Paris-Saclay, France (A.K.)
| | - Tobias Hedtke
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany (T.H., C.E.H.S.)
| | - Christian E H Schmelzer
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany (T.H., C.E.H.S.)
| | - Laurent Martiny
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
| | - Pascal Maurice
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
| | - Stéphane Dedieu
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France (A.J., T.S., M.C., C.K., L.M., P.M., S.D.)
- Apmonia Therapeutics, Reims, France (A.J., S.D.)
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Nahar MN, Acharzo AK, Rahaman MS, Zabeen IA, Haque S, Islam MA. Phytochemical screening and antioxidant, analgesic, and anthelmintic effect of ethanolic extract of Merremia umbellate stems. CLINICAL PHYTOSCIENCE 2020. [DOI: 10.1186/s40816-020-00232-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Merremia umbellata subsp. orientalis (Hallier f.), commonly known as Sapussunda in Bengali, is used in folk medicine for the treatment of different diseases such as helminthiasis, rheumatism, fever, wounds, burns, sores, management of pain due to cut etc. The present study was carried out to evaluate the antioxidant, analgesic and anthelmintic activities of ethanolic extract of stems of Merremia umbellate (ESMU).
Methods
Phytochemical investigation was carried by using standard chemical test as described in literatures. In vitro free radical scavenging activity of ethanolic extract was quantitatively estimated using DPPH (2,2-diphenyl-1-picrylhydrazyl) free radicals scavenging assay. Total phenolic and tannin content were spectrophotometrically determined by Folin Ciocalteu reagent whereas the flavonoid was determined by aluminum chloride colorimetric assay. Acetic acid induced writhing method and hot plate method, using Swiss albino mice, were used to investigate the analgesic effect of ESMU whereas in-vitro anthelmintic activity was evaluated against Haemonchus contortus (Nematode) of cattle.
Results
Phytochemical screening revealed that the ESMU contain reducing sugar, alkaloids, flavonoids, tannins, gums, steroid, xanthoproteins, glycosides and acidic compound. In DPPH free radical scavenging assay, the extract showed scavenging potential with IC50 value of 161.81 μg/mL. Total phenolics, tannin and flavonoid content of crude extract were found to be 87.4 mg GAE/gm, 68.2 mg GAE /gm and 64.27 mg QE/gm respectively. Significant (P < 0.001) analgesic effect was observed in acetic acid induced writhing method at both doses 250 and 500 mg/kg. Similar effect was found in hot plate method that measures antinociceptive effect in response to heat stimuli. The ESMU also exhibited significant (P < 0.001) anthelmintic activity in a concentration dependent manner. The paralysis time and time for death were recorded as 9.30, 8.62 and 7.65 min and 19.58, 18.82, and 16.43 min respectively at a concentration of 25, 50 and 100 mg/mL respectively.
Conclusion
Based on the results obtained in this study clearly strengthen the traditional uses of M. umbellate stems as antioxidant, antinociceptive and anthelmintic. Therefore, this result suggested that the stems of Merremia umbellata might be a potential source of useful bioactive compounds.
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Sun HJ, Lee WT, Leng B, Wu ZY, Yang Y, Bian JS. Nitroxyl as a Potential Theranostic in the Cancer Arena. Antioxid Redox Signal 2020; 32:331-349. [PMID: 31617376 DOI: 10.1089/ars.2019.7904] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Significance: As one-electron reduced molecule of nitric oxide (NO), nitroxyl (HNO) has gained enormous attention because of its novel physiological or pharmacological properties, ranging from cardiovascular protective actions to antitumoricidal effects. Recent Advances: HNO is emerging as a new entity with therapeutic advantages over its redox sibling, NO. The interests in the chemical, pharmacological, and biological characteristics of HNO have broadened our current understanding of its role in physiology and pathophysiology. Critical Issues: In particular, the experimental evidence suggests the therapeutic potential of HNO in tumor pharmacology, such as neuroblastoma, gastrointestinal tumor, ovarian, lung, and breast cancers. Indeed, HNO donors have been demonstrated to attenuate tumor proliferation and angiogenesis. Future Directions: In this review, the generation and detection of HNO are outlined, and the roles of HNO in cancer progression are further discussed. We anticipate that the completion of this review might give novel insights into the roles of HNO in cancer pharmacology and open up a novel field of cancer therapy based on HNO.
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Affiliation(s)
- Hai-Jian Sun
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Wei-Thye Lee
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Bin Leng
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Zhi-Yuan Wu
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yong Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, Center for New Drug Safety Evaluation and Research, China Pharmaceutical University, Nanjing, China
| | - Jin-Song Bian
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,National University of Singapore (Suzhou) Research Institute, Suzhou, China
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Carrera-Juliá S, Moreno ML, Barrios C, de la Rubia Ortí JE, Drehmer E. Antioxidant Alternatives in the Treatment of Amyotrophic Lateral Sclerosis: A Comprehensive Review. Front Physiol 2020; 11:63. [PMID: 32116773 PMCID: PMC7016185 DOI: 10.3389/fphys.2020.00063] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/21/2020] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that produces a selective loss of the motor neurons of the spinal cord, brain stem and motor cortex. Oxidative stress (OS) associated with mitochondrial dysfunction and the deterioration of the electron transport chain has been shown to be a factor that contributes to neurodegeneration and plays a potential role in the pathogenesis of ALS. The regions of the central nervous system affected have high levels of reactive oxygen species (ROS) and reduced antioxidant defenses. Scientific studies propose treatment with antioxidants to combat the characteristic OS and the regeneration of nicotinamide adenine dinucleotide (NAD+) levels by the use of precursors. This review examines the possible roles of nicotinamide riboside and pterostilbene as therapeutic strategies in ALS.
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Affiliation(s)
- Sandra Carrera-Juliá
- Doctoral Degree’s School, Catholic University of Valencia “San Vicente Mártir”, Valencia, Spain
- Department of Nutrition and Dietetics, Catholic University of Valencia “San Vicente Mártir”, Valencia, Spain
| | - Mari Luz Moreno
- Department of Basic Sciences, Catholic University of Valencia “San Vicente Mártir”, Valencia, Spain
| | - Carlos Barrios
- Institute for Research on Musculoskeletal Disorders, Catholic University of Valencia “San Vicente Mártir”, Valencia, Spain
| | | | - Eraci Drehmer
- Department of Basic Sciences, Catholic University of Valencia “San Vicente Mártir”, Valencia, Spain
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Isenberg JS, Roberts DD. The role of CD47 in pathogenesis and treatment of renal ischemia reperfusion injury. Pediatr Nephrol 2019; 34:2479-2494. [PMID: 30392076 PMCID: PMC6677644 DOI: 10.1007/s00467-018-4123-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/01/2018] [Accepted: 10/18/2018] [Indexed: 01/05/2023]
Abstract
Ischemia reperfusion (IR) injury is a process defined by the temporary loss of blood flow and tissue perfusion followed later by restoration of the same. Brief periods of IR can be tolerated with little permanent deficit, but sensitivity varies for different target cells and tissues. Ischemia reperfusion injuries have multiple causes including peripheral vascular disease and surgical interventions that disrupt soft tissue and organ perfusion as occurs in general and reconstructive surgery. Ischemia reperfusion injury is especially prominent in organ transplantation where substantial effort has been focused on protecting the transplanted organ from the consequences of IR. A number of factors mediate IR injury including the production of reactive oxygen species and inflammatory cell infiltration and activation. In the kidney, IR injury is a major cause of acute injury and secondary loss of renal function. Transplant-initiated renal IR is also a stimulus for innate and adaptive immune-mediated transplant dysfunction. The cell surface molecule CD47 negatively modulates cell and tissue responses to stress through limitation of specific homeostatic pathways and initiation of cell death pathways. Herein, a summary of the maladaptive activities of renal CD47 will be considered as well as the possible therapeutic benefit of interfering with CD47 to limit renal IR.
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Affiliation(s)
- Jeffrey S. Isenberg
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, Corresponding author: David D. Roberts, , 301-480-4368
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Qu S, Yang L, Liu Z. MicroRNA‐194 reduces inflammatory response and human dermal microvascular endothelial cells permeability through suppression of TGF‐β/SMAD pathway by inhibiting THBS1 in chronic idiopathic urticaria. J Cell Biochem 2019; 121:111-124. [PMID: 31190349 DOI: 10.1002/jcb.28941] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/11/2019] [Accepted: 04/18/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Shengming Qu
- Department of Dermatology The Second Hospital of Jilin University Changchun People's Republic of China
| | - Lei Yang
- Department of Dermatology The Second Hospital of Jilin University Changchun People's Republic of China
| | - Zhe Liu
- Department of Dermatology The Second Hospital of Jilin University Changchun People's Republic of China
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Liu Z, Ren Z, Zhang J, Chuang CC, Kandaswamy E, Zhou T, Zuo L. Role of ROS and Nutritional Antioxidants in Human Diseases. Front Physiol 2018; 9:477. [PMID: 29867535 PMCID: PMC5966868 DOI: 10.3389/fphys.2018.00477] [Citation(s) in RCA: 411] [Impact Index Per Article: 68.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/16/2018] [Indexed: 12/13/2022] Open
Abstract
The overproduction of reactive oxygen species (ROS) has been implicated in the development of various chronic and degenerative diseases such as cancer, respiratory, neurodegenerative, and digestive diseases. Under physiological conditions, the concentrations of ROS are subtlety regulated by antioxidants, which can be either generated endogenously or externally supplemented. A combination of antioxidant-deficiency and malnutrition may render individuals more vulnerable to oxidative stress, thereby increasing the risk of cancer occurrence. In addition, antioxidant defense can be overwhelmed during sustained inflammation such as in chronic obstructive pulmonary diseases, inflammatory bowel disease, and neurodegenerative disorders, cardiovascular diseases, and aging. Certain antioxidant vitamins, such as vitamin D, are essential in regulating biochemical pathways that lead to the proper functioning of the organs. Antioxidant supplementation has been shown to attenuate endogenous antioxidant depletion thus alleviating associated oxidative damage in some clinical research. However, some results indicate that antioxidants exert no favorable effects on disease control. Thus, more studies are warranted to investigate the complicated interactions between ROS and different types of antioxidants for restoration of the redox balance under pathologic conditions. This review highlights the potential roles of ROS and nutritional antioxidants in the pathogenesis of several redox imbalance-related diseases and the attenuation of oxidative stress-induced damages.
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Affiliation(s)
- Zewen Liu
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Department of Anesthesiology, Affiliated Ezhou Central Hospital, Wuhan University, Ezhou, China
| | - Zhangpin Ren
- Department of Pediatrics, Affiliated Ezhou Central Hospital, Wuhan University, Ezhou, China
| | - Jun Zhang
- Department of Rehabilitation, Affiliated Ezhou Central Hospital, Wuhan University, Ezhou, China
| | - Chia-Chen Chuang
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Eswar Kandaswamy
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Tingyang Zhou
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Li Zuo
- Radiologic Sciences and Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, United States
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18
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Zhao C, Isenberg JS, Popel AS. Human expression patterns: qualitative and quantitative analysis of thrombospondin-1 under physiological and pathological conditions. J Cell Mol Med 2018; 22:2086-2097. [PMID: 29441713 PMCID: PMC5867078 DOI: 10.1111/jcmm.13565] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/07/2018] [Indexed: 12/12/2022] Open
Abstract
Thrombospondin-1 (TSP-1), a matricellular protein and one of the first endogenous anti-angiogenic molecules identified, has long been considered a potent modulator of human diseases. While the therapeutic effect of TSP-1 to suppress cancer was investigated in both research and clinical settings, the mechanisms of how TSP-1 is regulated in cancer remain elusive, and the scientific answers to the question of whether TSP-1 expressions can be utilized as diagnostic or prognostic marker for patients with cancer are largely inconsistent. Moreover, TSP-1 plays crucial functions in angiogenesis, inflammation and tissue remodelling, which are essential biological processes in the progression of many cardiovascular diseases, and therefore, its dysregulated expressions in such conditions may have therapeutic significance. Herein, we critically analysed the literature pertaining to TSP-1 expression in circulating blood and pathological tissues in various types of cancer as well as cardiovascular and inflammation-related diseases in humans. We compare the secretion rates of TSP-1 by different cancer and non-cancer cells and discuss the potential connection between the expression changes of TSP-1 and vascular endothelial growth factor (VEGF) observed in patients with cancer. Moreover, the pattern and emerging significance of TSP-1 profiles in cardiovascular disease, such as peripheral arterial disease, diabetes and other related non-cancer disorders, are highlighted. The analysis of published TSP-1 data presented in this review may have implications for the future exploration of novel TSP-1-based treatment strategies for cancer and cardiovascular-related diseases.
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Affiliation(s)
- Chen Zhao
- Department of Biomedical EngineeringSchool of MedicineJohns Hopkins UniversityBaltimoreMDUSA
| | - Jeffrey S. Isenberg
- Division of Pulmonary, Allergy and Critical CareDepartment of MedicineHeart, Lung, Blood and Vascular Medicine InstituteUniversity of Pittsburgh School of MedicinePittsburghPAUSA
| | - Aleksander S. Popel
- Department of Biomedical EngineeringSchool of MedicineJohns Hopkins UniversityBaltimoreMDUSA
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19
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Yuan SM. Pulmonary artery hypertension in childhood: The transforming growth factor-β superfamily-related genes. Pediatr Neonatol 2018; 59:112-119. [PMID: 28967497 DOI: 10.1016/j.pedneo.2016.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 10/20/2016] [Accepted: 12/05/2016] [Indexed: 01/08/2023] Open
Abstract
Pulmonary artery hypertension (PAH) is very rare in childhood, and it can be divided into heritable, idiopathic drug- and toxin-induced and other disease (connective tissue disease, human immunodeficiency virus infection, portal hypertension, congenital heart disease, or schistosomiasis)-associated types. PAH could not be interpreted solely by pathophysiological theories. The impact of the transforming growth factor-β superfamily-related genes on the development of PAH in children remains to be clarified. Pertinent literature on the transforming growth factor-β superfamily-related genes in relation to PAH in children published after the year 2000 was reviewed and analyzed. Bone morphogenetic protein receptor type II gene mutation promotes cell division or prevents cell death, resulting in an overgrowth of cells in small arteries throughout the lungs. About 20% of individuals with a bone morphogenetic protein receptor type II gene mutation develop symptomatic PAH. In heritable PAH, bone morphogenetic protein receptor type II mutations may be absent; while mutations of other genes, such as type I receptor activin receptor-like kinase 1 and the type III receptor endoglin (both associated with hereditary hemorrhagic telangiectasia), caveolin-1 and KCNK3, the gene encoding potassium channel subfamily K, member 3, can be detected, instead. Gene mutations, environmental changes and acquired adjustment, etc. may explain the development of PAH. The researches on PAH rat model and familial PAH members may facilitate the elucidations of the mechanisms and further provide theories for prophylaxis and treatment of PAH.
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Affiliation(s)
- Shi-Min Yuan
- Department of Cardiothoracic Surgery, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, Fujian Province, People's Republic of China.
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20
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Jiang WL, Wei HJ, Guo ZY, Ni YR, Yang HQ, Xie SS. Effects of different-intensity laser acupuncture at two adjacent same-meridian acupoints on nitric oxide and soluble guanylate cyclase releases in human. Microcirculation 2017; 24. [PMID: 28665547 DOI: 10.1111/micc.12390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 06/26/2017] [Indexed: 02/06/2023]
Abstract
OBJECTIVES The aim of this study was to detect the influences of LA at nonacupoint and two adjacent acupoints of pericardium meridian on the releases of NO and sGC in 20 healthy subjects. METHODS Different intensities (12, 24, 48 mW) of infrared laser were used for irradiating Jianshi (PC5), Ximen (PC4) acupoints and nonacupoint for 20, 40 minutes, respectively. Semi-circular tubes were taped to the skin surface and filled with NO-scavenging compound for 20 minutes to capture NO and sGC, which were measured using spectrophotometry in a blinded fashion. RESULTS As the increase in the intensity of LA stimulation, the levels of NO releases over acupoints all were significantly increased, NO releases in nonacupoints following the same treatment only changed slightly, sGC amounts were observably enhanced over acupoints, but did not any change in nonacupoint area. Different intensities of LA treatments can sensitively affect the NO and sGC releases over acupoints. This indicated that LA-induced releases of the NO and sGC were specific to acupoints. CONCLUSIONS This is the first evidence reporting that LA induced significant elevations of NO-sGC releases over acupoints, and the enhanced signal molecules contribute to local circulation, which improves the beneficial effects of the therapy.
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Affiliation(s)
- Wan-Ling Jiang
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Hua-Jiang Wei
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Zhou-Yi Guo
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Yi-Rong Ni
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Hong-Qin Yang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education of China, Fujian Normal University, Fuzhou, Fujian, China
| | - Shu-Sen Xie
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education of China, Fujian Normal University, Fuzhou, Fujian, China
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21
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Salsoso R, Farías M, Gutiérrez J, Pardo F, Chiarello DI, Toledo F, Leiva A, Mate A, Vázquez CM, Sobrevia L. Adenosine and preeclampsia. Mol Aspects Med 2017; 55:126-139. [DOI: 10.1016/j.mam.2016.12.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 12/16/2016] [Accepted: 12/23/2016] [Indexed: 01/13/2023]
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22
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Shibao CA, Celedonio JE, Ramirez CE, Love-Gregory L, Arnold AC, Choi L, Okamoto LE, Gamboa A, Biaggioni I, Abumrad NN, Abumrad NA. A Common CD36 Variant Influences Endothelial Function and Response to Treatment with Phosphodiesterase 5 Inhibition. J Clin Endocrinol Metab 2016; 101:2751-8. [PMID: 27144937 PMCID: PMC4929841 DOI: 10.1210/jc.2016-1294] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
CONTEXT The scavenger receptor CD36 influences the endothelial nitric oxide-cGMP pathway in vitro. Genetic variants that alter CD36 level are common in African Americans (AAs), a population at high risk of endothelial dysfunction. OBJECTIVE To examine if the minor allele (G) of coding CD36 variant rs3211938 (G/T) which reduces CD36 level by approximately 50% influences endothelial function, insulin sensitivity (IS), and the response to treatment with the nitric oxide-cGMP potentiator sildenafil. DESIGN IS (frequently sampled iv glucose tolerance) and endothelial function (flow mediated dilation [FMD]) were determined in age- and body mass index-matched obese AA women with or without the G allele of rs3211938 (protocol 1). Effect of chronic sildenafil treatment on IS and FMD was tested in AA women with metabolic syndrome and with/without the CD36 variant, using a randomized, placebo-controlled trial (protocol 2). SETTING Two-center study. PARTICIPANTS Obese AA women. INTERVENTION A total of 20-mg sildenafil citrate or placebo thrice daily for 4 weeks. MAIN OUTCOME IS, FMD. RESULTS G allele carriers have lower FMD (P = .03) and cGMP levels (P = .01) than noncarriers. Sildenafil did not improve IS, mean difference 0.12 (95% confidence interval [CI], -0.33 to 0.58; P = .550). However, there was a significant interaction between FMD response to sildenafil and rs3211938 (P = .018). FMD tended to improve in G carriers, 2.9 (95% CI, -0.9 to 6.8; P = .126), whereas it deteriorated in noncarriers, -2.6 (95% CI, -5.1 to -0.1; P = .04). CONCLUSIONS The data document influence of a common genetic variant on susceptibility to endothelial dysfunction and its response to sildenafil treatment.
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Affiliation(s)
- Cyndya A Shibao
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Jorge E Celedonio
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Claudia E Ramirez
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Latisha Love-Gregory
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Amy C Arnold
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Leena Choi
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Luis E Okamoto
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Alfredo Gamboa
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Italo Biaggioni
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Naji N Abumrad
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Nada A Abumrad
- Department of Medicine (C.A.S., J.E.C., C.E.R., A.C.A., L.E.O., A.G., I.B.), Division of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232; Department of Medicine (L.L.-G., N.A.A.), Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri 63110; Department of Biostatistics (L.C.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232; and Department of Surgery (N.N.A.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
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Regulation of Neuronal Oxygen Responses in C. elegans Is Mediated through Interactions between Globin 5 and the H-NOX Domains of Soluble Guanylate Cyclases. J Neurosci 2016; 36:963-78. [PMID: 26791224 DOI: 10.1523/jneurosci.3170-15.2016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Soluble guanylate cyclases (sGCs) are gas-binding proteins that control diverse physiological processes such as vasodilation, platelet aggregation, and synaptic plasticity. In the nematode Caenorhabditis elegans, a complex of sGCs, GCY-35 and GCY-36, functions in oxygen (O2) sensing. Previous studies suggested that the neuroglobin GLB-5 genetically interacts with GCY-35, and that the inhibitory effect of GLB-5 on GCY-35 function is necessary for fast recovery from prolonged hypoxia. In this study, we identified mutations in gcy-35 and gcy-36 that impact fast recovery and other phenotypes associated with GLB-5, without undermining sGC activity. These mutations, heb1 and heb3, change conserved amino acid residues in the regulatory H-NOX domains of GCY-35 and GCY-36, respectively, and appear to suppress GLB-5 activity by different mechanisms. Moreover, we observed that short exposure to 35% O2 desensitized the neurons responsible for ambient O2 sensing and that this phenomenon does not occur in heb1 animals. These observations may implicate sGCs in neuronal desensitization mechanisms far beyond the specific case of O2 sensing in nematodes. The conservation of functionally important regions of sGCs is supported by examining site-directed mutants of GCY-35, which suggested that similar regions in the H-NOX domains of O2 and NO-sensing sGCs are important for heme/gas interactions. Overall, our studies provide novel insights into sGC activity and regulation, and implicate similar structural determinants in the control of both O2 and NO sensors. Significance statement: Soluble guanylate cyclases (sGCs) control essential and diverse physiological processes, including memory processing. We used Caenorhabditis elegans to explore how a neuroglobin inhibits a complex of oxygen-sensing sGCs, identifying sGC mutants that resist inhibition. Resistance appears to arise by two different mechanisms: increased basal sGC activity or disruption of an interaction with neuroglobin. Our findings demonstrate that the inhibition of sGCs by neuroglobin is essential for rapid adaptation to either low or high oxygen levels, and that similar structural regions are key for regulating both oxygen and nitric oxide sensors. Based on our structural and functional analyses, we present the hypothesis that neuroglobin-sGC interactions may be generally important for adaptation processes, including those in organisms with more complex neurological functions.
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Kajikawa M, Maruhashi T, Hida E, Iwamoto Y, Matsumoto T, Iwamoto A, Oda N, Kishimoto S, Matsui S, Hidaka T, Kihara Y, Chayama K, Goto C, Aibara Y, Nakashima A, Noma K, Higashi Y. Combination of Flow-Mediated Vasodilation and Nitroglycerine-Induced Vasodilation Is More Effective for Prediction of Cardiovascular Events. Hypertension 2016; 67:1045-52. [DOI: 10.1161/hypertensionaha.115.06839] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 02/16/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Masato Kajikawa
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Tatsuya Maruhashi
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Eisuke Hida
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Yumiko Iwamoto
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Takeshi Matsumoto
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Akimichi Iwamoto
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Nozomu Oda
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Shinji Kishimoto
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Shogo Matsui
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Takayuki Hidaka
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Yasuki Kihara
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Kazuaki Chayama
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Chikara Goto
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Yoshiki Aibara
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Ayumu Nakashima
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Kensuke Noma
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
| | - Yukihito Higashi
- From the Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine (M.K., Y.A., A.N., Y.H.), Global Career Design Center (M.K.), Department of Cardiovascular Medicine, Graduate School of Biomedical and Health Sciences (T. Maruhashi., Y.I., T. Matsumoto., A.I., N.O., S.K., S.M., T.H., Y.K.), and Department of Gastroenterology and Metabolism, Institute of Biomedical and Health Sciences, Graduate School of Biomedical and Health Sciences (K.C.),
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Shimizu T, Huang D, Yan F, Stranava M, Bartosova M, Fojtíková V, Martínková M. Gaseous O2, NO, and CO in signal transduction: structure and function relationships of heme-based gas sensors and heme-redox sensors. Chem Rev 2015; 115:6491-533. [PMID: 26021768 DOI: 10.1021/acs.chemrev.5b00018] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Toru Shimizu
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
- §Research Center for Compact Chemical System, National Institute of Advanced Industrial Science and Technology (AIST), Sendai 983-8551, Japan
| | - Dongyang Huang
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Fang Yan
- †Department of Cell Biology and Genetics and Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Martin Stranava
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Martina Bartosova
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Veronika Fojtíková
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
| | - Markéta Martínková
- ‡Department of Biochemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
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Platelet hyperaggregability in patients with atrial fibrillation. Evidence of a background proinflammatory milieu. Herz 2015; 41:57-62. [PMID: 26135468 DOI: 10.1007/s00059-015-4335-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 05/26/2015] [Accepted: 05/31/2015] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Atrial fibrillation (AF) is a condition where platelet hyperaggregability is commonly present. We examined potential physiological bases for platelet hyperaggregability in a cohort of patients with acute and chronic AF. In particular, we sought to identify the impact of inflammation [myeloperoxidase (MPO) and C-reactive protein (CRP)] and impaired nitric oxide (NO) signaling. METHODS Clinical and biochemical determinants of adenosine diphosphate (ADP)-induced platelet aggregation were sought in patients (n = 106) hospitalized with AF via univariate and multivariate analysis. RESULTS Hyper-responsiveness of platelets to ADP was directly (r = 0.254, p < 0.01) correlated with plasma concentrations of thrombospondin-1 (TSP-1), a matricellular protein that impairs NO responses and contributes to development of oxidative stress. In turn, plasma TSP-1 concentrations were directly correlated with MPO concentrations (r = 0.221, p < 0.05), while MPO concentrations correlated with those of asymmetric dimethylarginine (ADMA, r = 0.220, p < 0.05), and its structural isomer symmetric dimethylarginine (SDMA, r = 0.192, p = 0.05). Multivariate analysis identified TSP-1 (β = 0.276, p < 0.05) concentrations, as well as female sex (β = 0.199, p < 0.05), as direct correlates of platelet aggregability, and SDMA concentrations (β = - 0.292, p < 0.05) as an inverse correlate. CONCLUSION We conclude that platelet hyperaggregability, where present in the context of AF, may be engendered by impaired availability of NO, as well as via MPO-related inflammatory activation.
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Pereira M, Soares C, Canuto GAB, Tavares MFM, Colli W, Alves MJM. Down regulation of NO signaling in Trypanosoma cruzi upon parasite-extracellular matrix interaction: changes in protein modification by nitrosylation and nitration. PLoS Negl Trop Dis 2015; 9:e0003683. [PMID: 25856423 PMCID: PMC4391712 DOI: 10.1371/journal.pntd.0003683] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 03/06/2015] [Indexed: 01/18/2023] Open
Abstract
Background Adhesion of the Trypanosoma cruzi trypomastigotes, the causative agent of Chagas' disease in humans, to components of the extracellular matrix (ECM) is an important step in host cell invasion. The signaling events triggered in the parasite upon binding to ECM are less explored and, to our knowledge, there is no data available regarding •NO signaling. Methodology/Principal Findings Trypomastigotes were incubated with ECM for different periods of time. Nitrated and S-nitrosylated proteins were analyzed by Western blotting using anti-nitrotyrosine and S-nitrosyl cysteine antibodies. At 2 h incubation time, a decrease in NO synthase activity, •NO, citrulline, arginine and cGMP concentrations, as well as the protein modifications levels have been observed in the parasite. The modified proteins were enriched by immunoprecipitation with anti-nitrotyrosine antibodies (nitrated proteins) or by the biotin switch method (S-nitrosylated proteins) and identified by MS/MS. The presence of both modifications was confirmed in proteins of interest by immunoblotting or immunoprecipitation. Conclusions/Significance For the first time it was shown that T. cruzi proteins are amenable to modifications by S-nitrosylation and nitration. When T. cruzi trypomastigotes are incubated with the extracellular matrix there is a general down regulation of these reactions, including a decrease in both NOS activity and cGMP concentration. Notwithstanding, some specific proteins, such as enolase or histones had, at least, their nitration levels increased. This suggests that post-translational modifications of T. cruzi proteins are not only a reflex of NOS activity, implying other mechanisms that circumvent a relatively low synthesis of •NO. In conclusion, the extracellular matrix, a cell surrounding layer of macromolecules that have to be trespassed by the parasite in order to be internalized into host cells, contributes to the modification of •NO signaling in the parasite, probably an essential move for the ensuing invasion step. Interaction of Trypanosoma cruzi with the extracellular matrix (ECM) is an essential step in the invasion of mammalian cells. However, the nature of the signaling triggered in the parasite is poorly understood. Herein the key role of nitric oxide in T. cruzi signaling is described, using an ECM preparation, in the absence of host cells. Inhibition of NOS activity, with the expected decrease in •NO production, as well as decrease in cGMP concentration were observed by the incubation of T. cruzi trypomastigotes with ECM. Additionally, lower levels of protein S-nitrosylation and nitration were detected. These post-translational modifications have been analyzed by biotin-switch and protein immunoprecipitation approaches coupled to mass spectrometry. The presence of both modifications was confirmed for specific proteins, as mucin II (S-nitrosylation), histones, enolase and tubulins. To our knowledge, decrease in the •NO signaling pathway upon T. cruzi trypomastigotes adhesion to ECM, affecting both the canonical pathway (•NO-soluble guanylyl cyclase-cGMP) and protein S-nitrosylation and nitration is described for the first time in this parasite.
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Affiliation(s)
- Milton Pereira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Chrislaine Soares
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | | | | | - Walter Colli
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Maria Julia M. Alves
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
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