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A stricter control of low-density lipoprotein is necessary for thrombosis reduction in “lower thrombosis risk” patients with atrial fibrillation: a multicenter retrospective cohort study. J Thromb Thrombolysis 2020; 50:849-857. [DOI: 10.1007/s11239-020-02110-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Obermayer G, Afonyushkin T, Binder CJ. Oxidized low-density lipoprotein in inflammation-driven thrombosis. J Thromb Haemost 2018; 16:418-428. [PMID: 29316215 DOI: 10.1111/jth.13925] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Thrombosis is the defining feature of the most prevalent causes of cardiovascular mortality, such as myocardial infarction, stroke, and pulmonary artery embolism. Although platelet activation and activation of the plasmatic coagulation system are the hallmarks of thrombus formation, inflammatory processes and the cellular responses involved are increasingly being recognized as critical modulators of thrombosis. In the context of many chronic inflammatory diseases that are associated with a high thrombotic risk, oxidized lipoproteins represent a prominent sterile trigger of inflammation. Oxidized low-density lipoprotein and its components play a central role in the initiation and progression of atherosclerotic plaques, but also in other processes that lead to thrombotic events. Moreover, dying cells and microvesicles can be decorated with some of the same oxidized lipid components that are found on oxidized lipoproteins, and thereby similar mechanisms of thromboinflammation may also be active in venous thrombosis. In this review, we summarize the current knowledge on how oxidized lipoproteins and components thereof affect the cells and pathways involved in thrombosis.
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Affiliation(s)
- G Obermayer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
- Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - T Afonyushkin
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
- Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - C J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
- Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
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Huang X, Liu B, Wei Y, Beyea R, Yan H, Olson ST. Lipid oxidation inactivates the anticoagulant function of protein Z-dependent protease inhibitor (ZPI). J Biol Chem 2017; 292:14625-14635. [PMID: 28717005 PMCID: PMC5582853 DOI: 10.1074/jbc.m117.793901] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/03/2017] [Indexed: 11/06/2022] Open
Abstract
Lipid oxidation due to oxidative stress plays an important role in the pathogenesis of inflammatory and thrombotic cardiovascular diseases. Several findings suggest that lipid peroxidation can alter the function of coagulation proteins and contribute to a hypercoagulable state, but the molecular mechanisms are unclear. Here, we report that oxidized phospholipids suppress the anticoagulant function of the serpin, protein Z-dependent protease inhibitor (ZPI), a specific inhibitor of membrane-associated factor Xa (FXa) that requires protein Z (PZ), phospholipid, and calcium as cofactors. We found that this suppression arises from a diminished ability of the oxidized membrane to function as a cofactor to promote ZPI inhibition of membrane-bound FXa, due fully or in part to the susceptibility of the bound ZPI-PZ complex to oxidative inactivation. Surprisingly, free ZPI was also susceptible to inactivation by oxidized membrane vesicles in the absence of calcium. Oxidized vesicles containing both phosphatidylserine and polyunsaturated fatty acids were required to promote inactivation of the ZPI-PZ complex or free ZPI, indicating that binding of the PZ-complexed or free ZPI to peroxide-modified phospholipid vesicles mediates the inactivation. Heparin protected the ZPI-PZ complex and free ZPI from inactivation, suggesting that blocking the heparin-binding site on ZPI interferes with ZPI binding to lipid or to PZ. This was confirmed by direct lipid-binding experiments. Native PAGE indicated that oxidization induced dissociation of the ZPI-PZ complex and increased the negative charge of ZPI. We conclude that compromised ZPI anticoagulant function could contribute to thrombus initiation and growth in oxidative stress-induced cardiovascular diseases.
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Affiliation(s)
- Xin Huang
- From the Center for Molecular Biology of Oral Diseases and Department of Periodontics, University of Illinois at Chicago, Chicago, Illinois 60612 and
| | | | | | - Ryan Beyea
- From the Center for Molecular Biology of Oral Diseases and Department of Periodontics, University of Illinois at Chicago, Chicago, Illinois 60612 and
| | - Han Yan
- Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Steven T Olson
- From the Center for Molecular Biology of Oral Diseases and Department of Periodontics, University of Illinois at Chicago, Chicago, Illinois 60612 and
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4
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Florens N, Calzada C, Lyasko E, Juillard L, Soulage CO. Modified Lipids and Lipoproteins in Chronic Kidney Disease: A New Class of Uremic Toxins. Toxins (Basel) 2016; 8:E376. [PMID: 27999257 PMCID: PMC5198570 DOI: 10.3390/toxins8120376] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease (CKD) is associated with an enhanced oxidative stress and deep modifications in lipid and lipoprotein metabolism. First, many oxidized lipids accumulate in CKD and were shown to exert toxic effects on cells and tissues. These lipids are known to interfere with many cell functions and to be pro-apoptotic and pro-inflammatory, especially in the cardiovascular system. Some, like F2-isoprostanes, are directly correlated with CKD progression. Their accumulation, added to their noxious effects, rendered their nomination as uremic toxins credible. Similarly, lipoproteins are deeply altered by CKD modifications, either in their metabolism or composition. These impairments lead to impaired effects of HDL on their normal effectors and may strongly participate in accelerated atherosclerosis and failure of statins in end-stage renal disease patients. This review describes the impact of oxidized lipids and other modifications in the natural history of CKD and its complications. Moreover, this review focuses on the modifications of lipoproteins and their impact on the emergence of cardiovascular diseases in CKD as well as the appropriateness of considering them as actual mediators of uremic toxicity.
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Affiliation(s)
- Nans Florens
- CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Claude Bernard Lyon 1, University of Lyon, F-69621 Villeurbanne, France.
- Hospices Civils de Lyon, Department of Nephrology, Hôpital E. Herriot, F-69003 Lyon, France.
| | - Catherine Calzada
- CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Claude Bernard Lyon 1, University of Lyon, F-69621 Villeurbanne, France.
| | - Egor Lyasko
- CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Claude Bernard Lyon 1, University of Lyon, F-69621 Villeurbanne, France.
| | - Laurent Juillard
- CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Claude Bernard Lyon 1, University of Lyon, F-69621 Villeurbanne, France.
- Hospices Civils de Lyon, Department of Nephrology, Hôpital E. Herriot, F-69003 Lyon, France.
| | - Christophe O Soulage
- CarMeN, INSERM U1060, INRA U1397, INSA de Lyon, Université Claude Bernard Lyon 1, University of Lyon, F-69621 Villeurbanne, France.
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5
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Silvero MJ, Becerra MC. Plasmon-induced oxidative stress and macromolecular damage in pathogenic bacteria. RSC Adv 2016. [DOI: 10.1039/c6ra22233a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bacterial death during PACT would be consequence of macromolecular damage by large amounts of radicals produced after plasmon excitation of nanoparticles.
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Affiliation(s)
- M. J. Silvero
- Instituto Multidisciplinario de Biología Vegetal (IMBIV)
- CONICET and Dpto. de Farmacia
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - M. C. Becerra
- Instituto Multidisciplinario de Biología Vegetal (IMBIV)
- CONICET and Dpto. de Farmacia
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
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Abstract
Oxidized PLs (OxPLs) generated in health and disease are now recognized as important mediators of cellular signalling. There is an increasing body of evidence showing that PL peroxidation is not only increased in vascular disorders, but is also a physiological event of relevance to coagulation, innate immunity, and self-tolerance. Nonenzymatically formed OxPLs generated during chronic inflammation is an uncontrolled event, generating hundreds of diverse structures, and prone to more deleterious bioactivities. In contrast, enzymatic formation of OxPLs is tightly regulated, involving receptors and intracellular signaling, acting as part of the normal physiological response to injury in order to restore homeostasis. In the present review, the major nonenzymatic OxPLs structures found during vascular inflammation are summarized, along with a brief description of their known biological activities. Also, we review what is currently known about enzymatic formation of OxPLs by acutely activated immune cells and their signaling actions under homeostatic and pathological conditions.
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Affiliation(s)
- Maceler Aldrovandi
- Institute of Infection and Immunity, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK.
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7
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Allen D, Hasanally D, Ravandi A. Role of oxidized phospholipids in cardiovascular pathology. ACTA ACUST UNITED AC 2013. [DOI: 10.2217/clp.13.13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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New families of bioactive oxidized phospholipids generated by immune cells: identification and signaling actions. Blood 2012; 120:1985-92. [PMID: 22802337 DOI: 10.1182/blood-2012-04-402826] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Phospholipids are of critical importance in mammalian cell biology, both through providing a permeability barrier and acting as substrates for synthesis of lipid mediators. Recently, several new families of bioactive lipids were identified that form through the enzymatic oxidation of membrane phospholipids in circulating innate immune cells and platelets. These comprise eicosanoids attached to phosphatidylethanolamine and phosphatidylcholine and form within 2-5 minutes of cell activation by pathophysiologic agonists, via the coordinated action of receptors and enzymes. In this review, we summarize what is currently known regarding their structures, mechanisms of formation, cell biology, and signaling actions. We show that phospholipid oxidation by acutely activated immune cells is a controlled event, and we propose a central role in regulating membrane biology and innate immune function during health and disease. We also review the mass spectrometry methods used for identification of the lipids and describe how these approaches can be used for discovery of new lipid mediators in complex biologic samples.
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Thomas CP, O'Donnell VB. Oxidized phospholipid signaling in immune cells. Curr Opin Pharmacol 2012; 12:471-7. [PMID: 22445283 DOI: 10.1016/j.coph.2012.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/17/2012] [Accepted: 02/22/2012] [Indexed: 01/18/2023]
Abstract
Oxidized phospholipids (oxPLs) that can be generated either enzymatically or non-enzymatically are fast becoming recognized as important signaling mediators of the immune system. Hundreds of structures exist, but only a small fraction have been studied in detail. Their known activities include regulation of adhesion molecule expression, pro-coagulant activity and inhibition of Toll-like receptor signaling, and several have been detected in models of human and animal disease. In this review, the most studied structures of oxPLs will be summarized, along with descriptions of their known biological actions. Subsequently, the focus will be on the more recently described forms generated acutely by lipoxygenases (LOX) in human and murine immune cells.
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Affiliation(s)
- Christopher P Thomas
- Institute of Infection and Immunity, School of Medicine, Heath Park, Cardiff University, CF14 4XN, UK
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Bochkov VN, Oskolkova OV, Birukov KG, Levonen AL, Binder CJ, Stöckl J. Generation and biological activities of oxidized phospholipids. Antioxid Redox Signal 2010; 12:1009-59. [PMID: 19686040 PMCID: PMC3121779 DOI: 10.1089/ars.2009.2597] [Citation(s) in RCA: 403] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Glycerophospholipids represent a common class of lipids critically important for integrity of cellular membranes. Oxidation of esterified unsaturated fatty acids dramatically changes biological activities of phospholipids. Apart from impairment of their structural function, oxidation makes oxidized phospholipids (OxPLs) markers of "modified-self" type that are recognized by soluble and cell-associated receptors of innate immunity, including scavenger receptors, natural (germ line-encoded) antibodies, and C-reactive protein, thus directing removal of senescent and apoptotic cells or oxidized lipoproteins. In addition, OxPLs acquire novel biological activities not characteristic of their unoxidized precursors, including the ability to regulate innate and adaptive immune responses. Effects of OxPLs described in vitro and in vivo suggest their potential relevance in different pathologies, including atherosclerosis, acute inflammation, lung injury, and many other conditions. This review summarizes current knowledge on the mechanisms of formation, structures, and biological activities of OxPLs. Furthermore, potential applications of OxPLs as disease biomarkers, as well as experimental therapies targeting OxPLs, are described, providing a broad overview of an emerging class of lipid mediators.
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Affiliation(s)
- Valery N Bochkov
- Department of Vascular Biology and Thrombosis Research, Center for Biomolecular Medicine and Pharmacology, Medical University of Vienna, Vienna, Austria.
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12
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Baroni M, Pavani G, Marescotti D, Kaabache T, Borgel D, Gandrille S, Marchetti G, Legnani C, D'Angelo A, Pinotti M, Bernardi F. Membrane binding and anticoagulant properties of protein S natural variants. Thromb Res 2009; 125:e33-9. [PMID: 19878975 DOI: 10.1016/j.thromres.2009.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 09/17/2009] [Accepted: 09/21/2009] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Protein S (PS) is a vitamin K-dependent plasma glycoprotein with a key role in the control of coagulation pathway on phospholipid membranes. We compared anticoagulant and membrane binding properties of PS altered by natural mutations (N217S, DelI203D204) affecting the epidermal growth factor like-domain 4 (EGF4) and causing PS deficiency. MATERIALS AND METHODS Binding of recombinant, immunopurified PS (rPS) to several conformation-specific antibodies, to C4BP and to phospholipid liposomes was investigated by ELISA. PS binding to cells was analysed by flow cytometry. PS inhibitory activities were studied in plasma and purified systems. RESULTS AND CONCLUSIONS Conformational changes produced by mutations were revealed by mapping with calcium-dependent antibodies. The immunopurified recombinant mutants (rPS) showed at 200-800 nM concentration reduced inhibition of coagulation (rPS217S, 10.2-17.3%; rPSDelI203D204, 5.8-8.9% of rPSwt) in FXa 1-stage clotting assay with APC. In thrombin generation assays the inhibition of ETP was reduced to 51.6% (rPS217S) and 24.1% (rPSDelI203D204) of rPSwt. A slightly shortened lag time (minutes) was also observed (rPS217S, 2.58; rPSDelI203D204, 2.33; rPSwt, 3.17; PS deficient plasma, 2.17). In flow cytometry analysis both mutants efficiently bound apoptotic cells in adhesion or in suspension. The affinity for phosphatidylserine-rich vesicles (apparent Kd: rPSwt 27.7+/-1.6 nM, rPS217S 146.0+/-16.1 nM and rPSDelI203D204 234.1+/-28.1 nM) was substantially increased by membrane oxidation (10.9+/-0.6, 38.2+/-3.5 and 81.4+/-6.0 nM), which resulted in a virtually normal binding capacity of mutants at physiological PS concentration. These properties help to define the molecular bases of PS deficiency, and provide further elements for PS-mediated bridging of coagulation and inflammation.
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Affiliation(s)
- Marcello Baroni
- Department of Biochemistry and Molecular Biology, ICSI, University of Ferrara, Ferrara, Italy.
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13
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Pickering W, Gray E, Goodall AH, Barrowcliffe TW. Effects of apoptosis and lipid peroxidation on T-lymphoblastoid phospholipid-dependent procoagulant activity. J Thromb Haemost 2008; 6:1122-30. [PMID: 18601681 DOI: 10.1111/j.1538-7836.2008.02957.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Coagulation has an absolute requirement for macromolecular complexes to be assembled on a negatively charged phospholipid (PL) surface. Previously, we reported that malignant T-lymphoblastoid cells have the ability to support procoagulant activity (PCA) independently of tissue factor by providing such a surface. OBJECTIVE To explore the effect of two pathophysiologic processes, apoptosis and lipid peroxidation (LP), on this PL-dependent PCA. METHODS Three different assays for PL-dependent PCA (factor IXa-initiated FXa and thrombin generation and prothrombinase activity) were used to investigate this PCA after exposing three T-lymphoblastoid cell lines to either apoptotic stimuli (1 microM staurosporine) or oxidative stress (4 mm H(2)O(2) and 40 microM CuSO(4)). Surface exposure of anionic PL was measured by flow cytometry using annexin A5(FITC) and an antibody (3G4) specific for native, but not oxidized, phosphatidylserine (PS). RESULTS AND CONCLUSIONS Both apoptosis and LP significantly enhanced the PCA of cells, to a level that was greater than that observed following calcium ionophore treatment, suggesting that the increased activity was not solely due to anionic PL exposure. Whereas cells undergoing apoptosis bound both annexin A5(FITC) and 3G4, only annexin A5(FITC) bound to cells undergoing LP. This implies that apoptosis increases PCA by causing the translocation of oxidized/native PS to the outer membrane, whereas LP appears to increase the PCA, possibly due to malondialdehyde adducts altering the net charge on the cell surface, which allows PLs other than PS to participate in thrombin generation.
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Affiliation(s)
- W Pickering
- Biotherapeutics Group, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, UK.
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Liu L, Komatsu H, Murray IV, Axelsen PH. Promotion of Amyloid β Protein Misfolding and Fibrillogenesis by a Lipid Oxidation Product. J Mol Biol 2008; 377:1236-50. [DOI: 10.1016/j.jmb.2008.01.057] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Revised: 01/13/2008] [Accepted: 01/21/2008] [Indexed: 11/29/2022]
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Shin BS, Lee BD, Hahm TS, Kim CS, Park CD, Gwak MS, Lee SM, Chung IS, Kim GS. Effects of ascorbic acid on coagulation during living donor liver transplantation in adults. Korean J Anesthesiol 2008. [DOI: 10.4097/kjae.2008.55.4.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Byung Seop Shin
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung Dal Lee
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Soo Hahm
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chung Soo Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chan Do Park
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mi Sook Gwak
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Min Lee
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ik Soo Chung
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Gaab Soo Kim
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Komatsu H, Liu L, Murray IVJ, Axelsen PH. A mechanistic link between oxidative stress and membrane mediated amyloidogenesis revealed by infrared spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2007; 1768:1913-22. [PMID: 17632073 DOI: 10.1016/j.bbamem.2007.05.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 05/18/2007] [Accepted: 05/22/2007] [Indexed: 10/23/2022]
Abstract
The fully developed lesion of Alzheimer's disease is a dense plaque composed of fibrillar amyloid beta-proteins (Abeta) with a characteristic and well-ordered beta-sheet secondary structure. Because the incipient lesion most likely develops when these proteins are first induced to form beta-sheet structure, it is important to understand factors that induced Abeta to adopt this conformation. In this review, we describe the application of polarized attenuated total internal reflection infrared FT-IR spectroscopy for characterizing the conformation, orientation, and rate of accumulation of Abeta on lipid membranes. We also describe the application and yield of linked analysis, whereby multiple spectra are fit simultaneously with component bands that are constrained to share common fitting parameters. Results have shown that membranes promote beta-sheet formation under a variety of circumstances that may be significant to the pathogenesis of Alzheimer's disease.
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Affiliation(s)
- Hiroaki Komatsu
- The Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
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18
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Koppaka V, Paul C, Murray IVJ, Axelsen PH. Early synergy between Abeta42 and oxidatively damaged membranes in promoting amyloid fibril formation by Abeta40. J Biol Chem 2003; 278:36277-84. [PMID: 12821671 DOI: 10.1074/jbc.m301334200] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Oxidative lipid membrane damage is known to promote the misfolding of Abeta42 into pathological beta structure. In fully developed senile plaques of Alzheimer's disease, however, it is the shorter and more soluble amyloid beta protein, Abeta40, that predominates. To investigate the role of oxidative membrane damage in the misfolding of Abeta40, we have examined its interaction with supported lipid monolayer membranes using internal reflection infrared spectroscopy. Oxidatively damaged lipids modestly increased Abeta40 accumulation, with adsorption kinetics and a conformation that are distinct from that of Abeta42. In stark contrast, pretreatment of oxidatively damaged monolayer membranes with Abeta42 vigorously promoted Abeta40 accumulation and misfolding. Pretreatment of saturated or undamaged membranes with Abeta42 had no such effect. Parallel studies of lipid bilayer vesicles using a dye binding assay to detect fibril formation and electron microscopy to examine morphology demonstrated that Abeta42 pretreatment of oxidatively damaged membranes promoted the formation of mature Abeta40 amyloid fibrils. We conclude that oxidative membrane damage and Abeta42 act synergistically at an early stage to promote fibril formation by Abeta40. This synergy could be detected within minutes using internal reflection spectroscopy, whereas a dye-binding assay required several days and much higher protein concentrations to demonstrate this synergy.
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Affiliation(s)
- Vishwanath Koppaka
- Department of Pharmacology, Johnson Foundation for Molecular Biophysics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6084, USA
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Watson D, Atsriku C, Oliveira E. Review role of liquid chromatography–mass spectrometry in the analysis of oxidation products and antioxidants in biological systems. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(03)00467-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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De Cristofaro R, Rocca B, Vitacolonna E, Falco A, Marchesani P, Ciabattoni G, Landolfi R, Patrono C, Davì G. Lipid and protein oxidation contribute to a prothrombotic state in patients with type 2 diabetes mellitus. J Thromb Haemost 2003; 1:250-6. [PMID: 12871497 DOI: 10.1046/j.1538-7836.2003.00072.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Diabetes mellitus (DM) is associated with enhanced lipid oxidation and persistent platelet activation. We investigated whether oxidant stress (OS) also affects circulating proteins and is associated with an abnormal coagulative pattern. In 72 type 2 DM (T2DM) patients, urinary 8-iso-prostaglandin (PG) F2alpha and 11-dehydro-thromboxane B2 (TXM) were measured as markers of lipid peroxidation and platelet activation, respectively. The carbonyl content of plasma proteins (PCARB) was measured as global index of protein oxidation. 8-Iso-PGF2alpha and PCARB levels were higher in DM patients than in controls (P < 0.05). Likewise, both TXM and prothrombin F1+2 levels were higher in diabetics (P < 0.05). By contrast, anticoagulant markers, such as activated protein C, protein C activation peptide, and soluble thrombomodulin (TM) were depressed in T2DM (P < 0.05). In conclusion, OS in T2DM involves circulating proteins and is associated with an unbalanced promotion of procoagulant reactions. These effects in concert with platelet activation may contribute to atherothrombotic complications in T2DM.
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Affiliation(s)
- R De Cristofaro
- Center of Excellence on Aging, G. D'Annunziou University School of Medicine and Pharmacy, Chieti, Italy.
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Cohen Z, Gonzales RF, Davis-Gorman GF, Copeland JG, McDonagh PF. Thrombin activity and platelet microparticle formation are increased in type 2 diabetic platelets: a potential correlation with caspase activation. Thromb Res 2002; 107:217-21. [PMID: 12479881 DOI: 10.1016/s0049-3848(02)00334-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Diabetics suffer from many complications including a prothrombotic condition. Activated platelet membrane provides an anchor, phosphatidylserine, for the attachment of the prothrombinase complex, which allows increased thrombin formation. This study aimed to further elucidate the interrelationship between coagulation proteins and activated platelets in type 2 diabetic blood. We found that there was a significant increase (30 x) in thrombin activity in the type 2 diabetic (ZDF) blood as compared to age-matched (ZL) controls (p<0.001). There was also a significant increase in the number of platelet microparticles in the type 2 diabetic rat compared to the lean control (p<0.001). Further, there were significant increases in caspase-3, -6, and -8 activities in the type 2 diabetic rats as compared to the lean controls (p<0.05). The combination of increased thrombin activity, increased PMP formation and increased caspase activity may contribute to the hypercoagulability of the diabetic blood. These results give more insight into the mechanisms underlying the interrelationship between diabetic platelets and coagulation proteins causing a prothrombotic condition in this patient population at increased risk from thromboembolic events.
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Affiliation(s)
- Zoë Cohen
- Section of Cardiovascular and Thoracic Surgery and the Sarver Heart Center, Physiological Sciences Interdisciplinary Graduate Program, University of Arizona, Tucson, AZ 85724 USA.
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Balasubramanian K, Bevers EM, Willems GM, Schroit AJ. Binding of annexin V to membrane products of lipid peroxidation. Biochemistry 2001; 40:8672-6. [PMID: 11467926 DOI: 10.1021/bi010841y] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is increasing evidence that endogenously generated aldehydes formed as a result of lipid peroxidation are involved in the pathophysiological effects associated with oxidative stress in cells and tissues. Malondialdehyde (MDA), a major product of lipid peroxidation, can modify amines present on the cell surface and thereby introduce negative charges that can affect the interfacial ionic layer. We show that lipid peroxidation of RBC generates MDA adducts that, similar to phosphatidylserine (PS), bind annexin V in a Ca(2+)-dependent manner. Like PS, these adducts also promote the "PS-dependent" prothrombinase assays, albeit to lower levels. These results indicate that annexin V binding cannot be used as an exclusive indicator of cell surface PS and raise the possibility that some phenomenon attributed to PS may, in fact, also involve aldehyde-lipid adducts.
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Affiliation(s)
- K Balasubramanian
- Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030-4095, USA
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Safa O, Hensley K, Smirnov MD, Esmon CT, Esmon NL. Lipid oxidation enhances the function of activated protein C. J Biol Chem 2001; 276:1829-36. [PMID: 11054414 DOI: 10.1074/jbc.m005931200] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although lipid oxidation products are usually associated with tissue injury, it is now recognized that they can also contribute to cell activation and elicit anti-inflammatory lipid mediators. In this study, we report that membrane phospholipid oxidation can modulate the hemostatic balance. Oxidation of natural phospholipids results in an increased ability of the membrane surface to support the function of the natural anticoagulant, activated protein C (APC), without significantly altering the ability to support thrombin generation. Lipid oxidation also potentiated the ability of protein S to enhance APC-mediated factor Va inactivation. Phosphatidylethanolamine, phosphatidylserine, and polyunsaturation of the fatty acids were all required for the oxidation-dependent enhancement of APC function. A subgroup of thrombotic patients with anti-phospholipid antibodies specifically blocked the oxidation-dependent enhancement of APC function. Since leukocytes are recruited and activated at the thrombus or sites of vessel injury, our findings suggest that after the initial thrombus formation, lipid oxidation can remodel the membrane surface resulting in increased anticoagulant function, thereby reducing the thrombogenicity of the thrombus or injured vessel surface. Anti-phospholipid antibodies that block this process would therefore be expected to contribute to thrombus growth and disease.
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Affiliation(s)
- O Safa
- Department of Cardiovascular Biology, Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center, Oklahoma City 73104, USA
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