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Chen P, Chen C, Zheng Y, Chen F, Liu Z, Ren S, Song H, Liu T, Lu Z, Sun H, Kong Y, Yuan H. Discovery of 2,3-Dihydro[1,4]dioxino[2,3- g]benzofuran Derivatives as Protease Activated Receptor 4 (PAR4) Antagonists with Potent Antiplatelet Aggregation Activity and Low Bleeding Tendency. J Med Chem 2024; 67:5502-5537. [PMID: 38552183 DOI: 10.1021/acs.jmedchem.3c02099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Patients with arterial embolic disease have benefited greatly from antiplatelet therapy. However, hemorrhage risk of antiplatelet agents cannot be ignored. Herein, we describe the discovery of 2,3-dihydro[1,4]dioxino[2,3-g]benzofuran compounds as novel PAR4 antagonists. Notably, the isomers 36 and 37 with the chemotype of phenoxyl methylene substituted on the 2,3-dihydro-1,4-dioxine ring exhibited potent in vitro antiplatelet activity (IC50 = 26.13 nM for 36 and 14.26 nM for 37) and significantly improved metabolic stability in human liver microsomes (T1/2 = 97.6 min for 36 and 11.1 min for BMS-986120). 36 also displayed good oral PK profiles (mice: T1/2 = 7.32 h and F = 45.11%). Both of them showed overall potent ex vivo antiplatelet activity at concentrations of 6 and 12 mg/kg, with no impact on the coagulation system and low bleeding liability. Our work will facilitate development of novel PAR4 antagonists as a safer therapeutic option for arterial embolism.
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Affiliation(s)
- Panpan Chen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Cai Chen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Yizheng Zheng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Fangjun Chen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Zhaojun Liu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Shenhong Ren
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Hangyu Song
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Tongdan Liu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Zhipeng Lu
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Chongqing Innovation Institute of China Pharmaceutical University, Chongqing 401135, China
| | - Yi Kong
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Haoliang Yuan
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Chongqing Innovation Institute of China Pharmaceutical University, Chongqing 401135, China
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Kuhn BJ, Swanson A, Cherupalla AS, Booth L, Dickerson WM, Fitzpatrick GM, Alexander WA, Moskowitz KA. Mechanisms of action of an investigational new freeze-dried platelet-derived hemostatic product. J Thromb Haemost 2024; 22:686-699. [PMID: 38072376 DOI: 10.1016/j.jtha.2023.11.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 11/21/2023] [Accepted: 11/27/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND A safe and efficacious hemostatic product with a long shelf-life is needed to reduce mortality from hemorrhage due to trauma and improve surgical outcomes for persons with platelet deficiency or dysfunction. Thrombosomes, a trehalose-stabilized, leukoreduced, pooled blood group-O freeze-dried platelet-derived hemostatic (FPH) with a 3-year shelf-life, may satisfy this need. OBJECTIVES To characterize the mechanism of action of FPH. METHODS FPH's ability to adhere to collagen, aggregate with and without platelets, and form clots was evaluated in vitro. Nonobese diabetic-severe combined immunodeficiency mouse models were used to assess circulation persistence and hemostatic efficacy. RESULTS FPH displays the morphology and surface proteins of activated platelets. FPH adheres to collagen, aggregates, and promotes clots, producing an insoluble fibrin mesh. FPH is rapidly cleared from circulation, has hemostatic efficacy comparable to apheresis platelets in a murine tail-cut, and acts in a dose-dependent manner. CONCLUSION FPH is a first-in-class investigational treatment and shows strong potential as a hemostatic agent that is capable of binding exposed collagen, coaggregating with endogenous platelets, and promoting the coagulation cascade. These properties may be exploited to treat active platelet-related or diffuse vascular bleeding. FPH has the potential to fulfill a large unmet patient need as an acute hemostatic treatment in severe bleeding, such as surgery and trauma.
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Affiliation(s)
- Benjamin J Kuhn
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA.
| | - Ana Swanson
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
| | - Arjun S Cherupalla
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
| | - Lisa Booth
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
| | - W Matthew Dickerson
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
| | | | - W Allan Alexander
- Medical Science and Clinical Development, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
| | - Keith A Moskowitz
- Department of Discovery Research, Cellphire Therapeutics, Inc, Rockville, Maryland, USA
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Bresette CA, Ashworth KJ, Di Paola J, Ku DN. N-Acetyl Cysteine Prevents Arterial Thrombosis in a Dose-Dependent Manner In Vitro and in Mice. Arterioscler Thromb Vasc Biol 2024; 44:e39-e53. [PMID: 38126172 DOI: 10.1161/atvbaha.123.319044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 11/26/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Platelet-rich thrombi occlude arteries causing fatal infarcts like heart attacks and strokes. Prevention of thrombi by current antiplatelet agents can cause major bleeding. Instead, we propose using N-acetyl cysteine (NAC) to act against the protein VWF (von Willebrand factor), and not platelets, to prevent arterial thrombi from forming. METHODS NAC was assessed for its ability to prevent arterial thrombosis by measuring platelet accumulation rate and occlusion time using a microfluidic model of arterial thrombosis with human blood. Acute clot formation, clot stability, and tail bleeding were measured in vivo with the murine modified Folts model. The effect of NAC in the murine model after 6 hours was also measured to determine any persistent effects of NAC after it has been cleared from the blood. RESULTS We demonstrate reduction of thrombi formation following treatment with NAC in vitro and in vivo. Human whole blood treated with 3 or 5 mmol/L NAC showed delayed thrombus formation 2.0× and 3.7× longer than control, respectively (P<0.001). Blood treated with 10 mmol/L NAC did not form an occlusive clot, and no macroscopic platelet aggregation was visible (P<0.001). In vivo, a 400-mg/kg dose of NAC prevented occlusive clots from forming in mice without significantly affecting tail bleeding times. A lower dose of NAC significantly reduced clot stability. Mice given multiple injections showed that NAC has a lasting and cumulative effect on clot stability, even after being cleared from the blood (P<0.001). CONCLUSIONS Both preclinical models demonstrate that NAC prevents thrombus formation in a dose-dependent manner without significantly affecting bleeding time. This work highlights a new pathway for preventing arterial thrombosis, different from antiplatelet agents, using an amino acid derivative as an antithrombotic therapeutic.
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Affiliation(s)
- Christopher A Bresette
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (C.A.B., D.N.K.)
| | - Katrina J Ashworth
- Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine in St. Louis, MO (K.J.A., J.D.P.)
| | - Jorge Di Paola
- Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine in St. Louis, MO (K.J.A., J.D.P.)
| | - David N Ku
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta (C.A.B., D.N.K.)
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Jacob S, Kosaka Y, Bhatlekar S, Denorme F, Benzon H, Moody A, Moody V, Tugolukova E, Hull G, Kishimoto N, Manne BK, Guo L, Souvenir R, Seliger BJ, Eustes AS, Hoerger K, Tolley ND, Fatahian AN, Boudina S, Christiani DC, Wei Y, Ju C, Campbell RA, Rondina MT, Abel ED, Bray PF, Weyrich AS, Rowley JW. Mitofusin-2 Regulates Platelet Mitochondria and Function. Circ Res 2024; 134:143-161. [PMID: 38156445 PMCID: PMC10872864 DOI: 10.1161/circresaha.123.322914] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 12/13/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Single-nucleotide polymorphisms linked with the rs1474868 T allele (MFN2 [mitofusin-2] T/T) in the human mitochondrial fusion protein MFN2 gene are associated with reduced platelet MFN2 RNA expression and platelet counts. This study investigates the impact of MFN2 on megakaryocyte and platelet biology. METHODS Mice with megakaryocyte/platelet deletion of Mfn2 (Mfn2-/- [Mfn2 conditional knockout]) were generated using Pf4-Cre crossed with floxed Mfn2 mice. Human megakaryocytes were generated from cord blood and platelets isolated from healthy subjects genotyped for rs1474868. Ex vivo approaches assessed mitochondrial morphology, function, and platelet activation responses. In vivo measurements included endogenous/transfused platelet life span, tail bleed time, transient middle cerebral artery occlusion, and pulmonary vascular permeability/hemorrhage following lipopolysaccharide-induced acute lung injury. RESULTS Mitochondria was more fragmented in megakaryocytes derived from Mfn2-/- mice and from human cord blood with MFN2 T/T genotype compared with control megakaryocytes. Human resting platelets of MFN2 T/T genotype had reduced MFN2 protein, diminished mitochondrial membrane potential, and an increased rate of phosphatidylserine exposure during ex vivo culture. Platelet counts and platelet life span were reduced in Mfn2-/- mice accompanied by an increased rate of phosphatidylserine exposure in resting platelets, especially aged platelets, during ex vivo culture. Mfn2-/- also decreased platelet mitochondrial membrane potential (basal) and activated mitochondrial oxygen consumption rate, reactive oxygen species generation, calcium flux, platelet-neutrophil aggregate formation, and phosphatidylserine exposure following dual agonist activation. Ultimately, Mfn2-/- mice showed prolonged tail bleed times, decreased ischemic stroke infarct size after cerebral ischemia-reperfusion, and exacerbated pulmonary inflammatory hemorrhage following lipopolysaccharide-induced acute lung injury. Analysis of MFN2 SNPs in the iSPAAR study (Identification of SNPs Predisposing to Altered ALI Risk) identified a significant association between MFN2 and 28-day mortality in patients with acute respiratory distress syndrome. CONCLUSIONS Mfn2 preserves mitochondrial phenotypes in megakaryocytes and platelets and influences platelet life span, function, and outcomes of stroke and lung injury.
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Affiliation(s)
- Shancy Jacob
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Yasuhiro Kosaka
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Seema Bhatlekar
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Frederik Denorme
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Haley Benzon
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Alexandra Moody
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Victoria Moody
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | | | - Grayson Hull
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Nina Kishimoto
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Bhanu K. Manne
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Li Guo
- Bloodworks Northwest Research Institute, Seattle, WA
- Division of Hematology and Oncology, University of Utah, Seattle, WA
| | - Rhonda Souvenir
- David Geffen School of Medicine and University of California, Los Angeles (UCLA), Health, Los Angeles, CA
| | | | | | - Kelly Hoerger
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Neal D. Tolley
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
| | - Amir N. Fatahian
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Sihem Boudina
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT
| | - David C. Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
- Department of Medicine, Massachusetts General Hospital/Harvard Medical School, Boston, MA, 02115, USA
| | - Yongyue Wei
- Peking University Center for Public Health and Epidemic Preparedness and Response, Beijing, 100191, China
- Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, 100191, China
| | - Can Ju
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Robert A. Campbell
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT
- Department of Pathology, University of Utah Heath, Salt Lake City, UT
| | - Matthew T. Rondina
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT
- Department of Pathology, University of Utah Heath, Salt Lake City, UT
- Department of Internal Medicine and the GRECC, George E. Wahlen VAMC, Salt Lake City, UT
| | - E. Dale Abel
- David Geffen School of Medicine and University of California, Los Angeles (UCLA), Health, Los Angeles, CA
| | - Paul F. Bray
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Division of Hematology and Hematologic Malignancies, Department of Internal Medicine, University of Utah, Salt Lake City, UT
| | - Andrew S. Weyrich
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Oklahoma Medical Research Foundation (OMRF), Oklahoma City, OK
| | - Jesse W. Rowley
- Molecular Medicine Program, University of Utah, Salt Lake City, UT
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT
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Olson SA, Osborn BK, Cotton ME, Krocker JD, Koami H, White N, Cardenas JC. Fibrinogen Fragment X Mediates Endothelial Barrier Disruption via Suppression of VE-Cadherin. J Surg Res 2024; 293:639-646. [PMID: 37837820 PMCID: PMC10726297 DOI: 10.1016/j.jss.2023.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/03/2023] [Accepted: 09/12/2023] [Indexed: 10/16/2023]
Abstract
INTRODUCTION Major traumatic injury is associated with early hemorrhage-related and late-stage deaths due to multiple organ failure (MOF). While improvements to hemostatic resuscitation have significantly reduced hemorrhage-related deaths, the incidence of MOF among trauma patients remains high. Dysregulation of vascular endothelial cell (EC) barrier function is a central mechanism in the development of MOF; however, the mechanistic triggers remain unknown. Accelerated fibrinolysis occurs in a majority of trauma patients, resulting in high circulating levels of fibrin(ogen) degradation products, such as fragment X. To date, the relationship between fragment X and EC dysregulation and barrier disruption is unknown. The goal of this study was to determine the effects of fragment X on EC barrier integrity and expression of paracellular junctional proteins that regulate barrier function. METHODS Human lung microvascular endothelial cells (HLMVECs) were treated with increasing concentrations of fragment X (1, 10, and 100 μg/mL), and barrier function was monitored using the xCELLigence live-cell monitoring system. Quantitative PCR (qPCR) was performed to measure changes in EC expression of 84 genes. Immunofluorescent (IF) cytostaining was performed to validate qPCR findings. RESULTS Fragment X treatment significantly increased endothelial permeability over time (P < 0.05). There was also a significant reduction in VE-cadherin mRNA expression in fragment X-treated HLMVECs compared to control (P = 0.01), which was confirmed by IF staining. CONCLUSIONS Fragment X may induce EC hyperpermeability by reducing VE-cadherin expression. This suggests that a targeted approach to disrupting EC-fragment X interactions could mitigate EC barrier disruption, organ edema, and MOF associated with major trauma.
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Affiliation(s)
- Sarah A Olson
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Baron K Osborn
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Madeline E Cotton
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Joseph D Krocker
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Hiroyuki Koami
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas
| | - Nathan White
- Department of Emergency Medicine and Resuscitation Engineering Science Unit, University of Washington School of Medicine, Seattle, Washington
| | - Jessica C Cardenas
- Department of Surgery, Center for Translational Injury Research, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, Texas.
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Liang P, Bi T, Zhou Y, Wang C, Ma Y, Xu H, Shen H, Ren W, Yang S. Carbonized Platycladus orientalis Derived Carbon Dots Accelerate Hemostasis through Activation of Platelets and Coagulation Pathways. Small 2023; 19:e2303498. [PMID: 37607318 DOI: 10.1002/smll.202303498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/14/2023] [Indexed: 08/24/2023]
Abstract
Achieving rapid and effective hemostasis remains a multidisciplinary challenge. Here, distinctive functional carbon dots derived from carbonized Platycladus orientalis (CPO-CDs) are developed using one-step hydrothermal method. The negatively charged surface of CPO-CDs retains partial functional groups from CPO precursor, exhibiting excellent water solubility and high biocompatibility. Both rat liver injury model and tail amputation model have confirmed the rapid and effective hemostatic performance of CPO-CDs on exogenous hemorrhage. Further, on endogenous blood-heat hemorrhage syndrome rat model, CPO-CDs could inhibit hemorrhage and alleviate inflammation response. Interestingly, the excellent hemostasis performance of CPO-CDs is ascribed to activate exogenous coagulation pathway and common coagulation pathway. More importantly, metabolomics of rat plasma suggests that the hemostasis effect of CPO-CDs is closely related to platelet functions. Therefore, the designed in vitro experiments are performed and it is discovered that CPO-CDs significantly promote platelets adhesion, activation, and aggregation. Further, the underlying mechanism investigation suggests that Src/Syk signal pathway plays a key role in platelets activation triggered by CPO-CDs. Overall, CPO-CDs with rapid and excellent hemostatic performance are discovered for the first time, which could be an excellent candidate for the treatment of hemorrhagic diseases.
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Affiliation(s)
- Pan Liang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- State Key Laboratories for Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, 999078, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Tao Bi
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Yanan Zhou
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Chengmei Wang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Yining Ma
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Houping Xu
- Preventive Treatment Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Hongping Shen
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Wei Ren
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
| | - Sijin Yang
- National Traditional Chinese Medicine Clinical Research Base and Drug Research Center of Integrated Traditional Chinese and Western Medicine, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, 646000, China
- State Key Laboratories for Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, 999078, China
- Institute of Integrated Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, China
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Tanzadehpanah H, Modaghegh MHS, Mahaki H. Key biomarkers in cerebral arteriovenous malformations: Updated review. J Gene Med 2023; 25:e3559. [PMID: 37380428 DOI: 10.1002/jgm.3559] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/02/2023] [Accepted: 06/08/2023] [Indexed: 06/30/2023] Open
Abstract
The formation of vascular networks consisting of arteries, capillaries, and veins is vital in embryogenesis. It is also crucial in adulthood for the formation of a functional vasculature. Cerebral arteriovenous malformations (CAVMs) are linked with a remarkable risk of intracerebral hemorrhage because arterial blood is directly shunted into the veins before the arterial blood pressure is dissipated. The underlying mechanisms responsible for arteriovenous malformation (AVM) growth, progression, and rupture are not fully known, yet the critical role of inflammation in AVM pathogenesis has been noted. The proinflammatory cytokines are upregulated in CAVM, which stimulates overexpression of cell adhesion molecules in endothelial cells (ECs), leading to improved leukocyte recruitment. It is well-known that metalloproteinase-9 secretion by leukocytes disrupts CAVM walls resulting in rupture. Moreover, inflammation alters the angioarchitecture of CAVMs by upregulating angiogenic factors impacting the apoptosis, migration, and proliferation of ECs. A better understanding of the molecular signature of CAVM might allow us to identify biomarkers predicting this complication, acting as a goal for further investigations that may be potentially targeted in gene therapy. The present review is focused on the numerous studies conducted on the molecular signature of CAVM and the associated hemorrhage. The association of numerous molecular signatures with a higher risk of CAVM rupture is shown through inducing proinflammatory mediators, as well as growth factors signaling, Ras-mitogen-activated protein kinase-extracellular signal-regulated kinase, and NOTCH pathways, which are accompanied by cellular level inflammation and endothelial alterations resulting in vascular wall instability. According to the studies, it is assumed that matrix metalloproteinase, interleukin-6, and vascular endothelial growth factor are the biomarkers most associated with CAVM and the rate of hemorrhage, as well as diagnostic methods, with respect to enhancing the patient-specific risk estimation and improving treatment choices.
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Affiliation(s)
- Hamid Tanzadehpanah
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Hanie Mahaki
- Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Kulikauskas MR, Oatley M, Yu T, Liu Z, Matsumura L, Kidder E, Ruter D, Bautch VL. Endothelial cell SMAD6 balances Alk1 function to regulate adherens junctions and hepatic vascular development. Development 2023; 150:dev201811. [PMID: 37787089 PMCID: PMC10629679 DOI: 10.1242/dev.201811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
BMP signaling is crucial to blood vessel formation and function, but how pathway components regulate vascular development is not well-understood. Here, we find that inhibitory SMAD6 functions in endothelial cells to negatively regulate ALK1-mediated responses, and it is required to prevent vessel dysmorphogenesis and hemorrhage in the embryonic liver vasculature. Reduced Alk1 gene dosage rescued embryonic hepatic hemorrhage and microvascular capillarization induced by Smad6 deletion in endothelial cells in vivo. At the cellular level, co-depletion of Smad6 and Alk1 rescued the destabilized junctions and impaired barrier function of endothelial cells depleted for SMAD6 alone. Mechanistically, blockade of actomyosin contractility or increased PI3K signaling rescued endothelial junction defects induced by SMAD6 loss. Thus, SMAD6 normally modulates ALK1 function in endothelial cells to regulate PI3K signaling and contractility, and SMAD6 loss increases signaling through ALK1 that disrupts endothelial cell junctions. ALK1 loss-of-function also disrupts vascular development and function, indicating that balanced ALK1 signaling is crucial for proper vascular development and identifying ALK1 as a 'Goldilocks' pathway in vascular biology that requires a certain signaling amplitude, regulated by SMAD6, to function properly.
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Affiliation(s)
- Molly R. Kulikauskas
- Cell Biology and Physiology Curriculum, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Morgan Oatley
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Tianji Yu
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Ziqing Liu
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Lauren Matsumura
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Elise Kidder
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Dana Ruter
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
| | - Victoria L. Bautch
- Cell Biology and Physiology Curriculum, The University of North Carolina, Chapel Hill, NC 27599, USA
- Department of Biology, The University of North Carolina, Chapel Hill, NC 27599, USA
- McAllister Heart Institute, The University of North Carolina, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599, USA
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Kaiser R, Escaig R, Nicolai L. Hemostasis without clot formation: how platelets guard the vasculature in inflammation, infection, and malignancy. Blood 2023; 142:1413-1425. [PMID: 37683182 DOI: 10.1182/blood.2023020535] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Platelets are key vascular effectors in hemostasis, with activation signals leading to fast recruitment, aggregation, and clot formation. The canonical process of hemostasis is well-characterized and shares many similarities with pathological thrombus formation. However, platelets are also crucially involved in the maintenance of vascular integrity under both steady-state and inflammatory conditions by ensuring blood vessel homeostasis and preventing microbleeds. In these settings, platelets use distinct receptors, signaling pathways, and ensuing effector functions to carry out their deeds. Instead of simply forming clots, they mainly act as individual sentinels that swiftly adapt their behavior to the local microenvironment. In this review, we summarize previously recognized and more recent studies that have elucidated how anucleate, small platelets manage to maintain vascular integrity when faced with challenges of infection, sterile inflammation, and even malignancy. We dissect how platelets are recruited to the vascular wall, how they identify sites of injury, and how they prevent hemorrhage as single cells. Furthermore, we discuss mechanisms and consequences of platelets' interaction with leukocytes and endothelial cells, the relevance of adhesion as well as signaling receptors, in particular immunoreceptor tyrosine-based activation motif receptors, and cross talk with the coagulation system. Finally, we outline how recent insights into inflammatory hemostasis and vascular integrity may aid in the development of novel therapeutic strategies to prevent hemorrhagic events and vascular dysfunction in patients who are critically ill.
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Affiliation(s)
- Rainer Kaiser
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
| | - Raphael Escaig
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
| | - Leo Nicolai
- Medizinische Klinik und Poliklinik I, University Hospital Ludwig Maximilian University, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., Partner Site Munich Heart Alliance, Munich, Germany
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10
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Johnsen LØ, Friis KA, Damkier HH. In vitro investigation of the effect of proinflammatory cytokines on mouse choroid plexus membrane transporters Ncbe and NKCC1. Fluids Barriers CNS 2023; 20:71. [PMID: 37828581 PMCID: PMC10568836 DOI: 10.1186/s12987-023-00474-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 10/04/2023] [Indexed: 10/14/2023] Open
Abstract
Intraventricular hemorrhage is a potentially life-threatening condition. Approximately 20% of patients develop posthemorrhagic hydrocephalus with increased ventricular volume and intracranial pressure. Hydrocephalus develops partially due to increased secretion of cerebrospinal fluid by the choroid plexus. During hemorrhage a multitude of factors are released into the cerebrospinal fluid. Many of these have been implicated in the hypersecretion. In this study, we have investigated the isolated effect of inflammatory components, on the abundance of two membrane transporters involved in cerebrospinal fluid secretion by the choroid plexus: the Na+-dependent Cl-/HCO3- exchanger, Ncbe, and the Na+, K+, 2Cl- cotransporter, NKCC1. We have established a primary choroid plexus epithelial cell culture from 1 to 7 days old mouse pups. Seven days after seeding, the cells formed a monolayer. The cells were treated with either tumor necrosis factor alpha (TNFα), interleukin 1 beta (IL-1β), or interleukin 6 (IL-6) to mimic inflammation. The data show that treatment with TNFα, and IL-1β only transiently increased NKCC1 abundance whereas the effect on Ncbe abundance was a transient decrease. IL-6 however significantly increased NKCC1 (242%), the phosphorylated NKCC1 (147%), as well as pSPAK (406%) abundance, but had no effect on Ncbe. This study suggests that the inflammatory pathway involved in hypersecretion primarily is mediated by activation of basolateral receptors in the choroid plexus, mainly facilitated by IL-6. This study highlights the complexity of the pathophysiological circumstances occurring during intraventricular hemorrhage.
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11
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Postic G, Solarz J, Loubière C, Kandiah J, Sawmynaden J, Adam F, Vilaire M, Léger T, Camadro J, Victorino DB, Potier M, Bun E, Moroy G, Kauskot A, Christophe O, Janel N. Over-expression of Dyrk1A affects bleeding by modulating plasma fibronectin and fibrinogen level in mice. J Cell Mol Med 2023; 27:2228-2238. [PMID: 37415307 PMCID: PMC10399536 DOI: 10.1111/jcmm.17817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 06/04/2023] [Accepted: 06/08/2023] [Indexed: 07/08/2023] Open
Abstract
Down syndrome is the most common chromosomal abnormality in humans. Patients with Down syndrome have hematologic disorders, including mild to moderate thrombocytopenia. In case of Down syndrome, thrombocytopenia is not associated with bleeding, and it remains poorly characterized regarding molecular mechanisms. We investigated the effects of overexpression of Dyrk1A, an important factor contributing to some major Down syndrome phenotypes, on platelet number and bleeding in mice. Mice overexpressing Dyrk1A have a decrease in platelet number by 20%. However, bleeding time was found to be reduced by 50%. The thrombocytopenia and the decreased bleeding time observed were not associated to an abnormal platelet receptors expression, to a defect of platelet activation by ADP, thrombin or convulxin, to the presence of activated platelets in the circulation or to an abnormal half-life of the platelets. To propose molecular mechanisms explaining this discrepancy, we performed a network analysis of Dyrk1A interactome and demonstrated that Dyrk1A, fibronectin and fibrinogen interact indirectly through two distinct clusters of proteins. Moreover, in mice overexpressing Dyrk1A, increased plasma fibronectin and fibrinogen levels were found, linked to an increase of the hepatic fibrinogen production. Our results indicate that overexpression of Dyrk1A in mice induces decreased bleeding consistent with increased plasma fibronectin and fibrinogen levels, revealing a new role of Dyrk1A depending on its indirect interaction with these two proteins.
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Affiliation(s)
| | - Jean Solarz
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
| | - Cécile Loubière
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
| | | | | | - Frederic Adam
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
| | | | - Thibaut Léger
- Université Paris Cité, IJM, UMR 7592, CNRSParisFrance
- Toxicology of Contaminants Unit, Fougeres Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (ANSES)FougeresFrance
| | | | - Daniella Balduino Victorino
- ICM Paris Brain Institute, CNRS UMR7225, INSERM U1127, Sorbonne University, Hôpital de la Pitié‐SalpêtrièreParisFrance
| | - Marie‐Claude Potier
- ICM Paris Brain Institute, CNRS UMR7225, INSERM U1127, Sorbonne University, Hôpital de la Pitié‐SalpêtrièreParisFrance
| | - Eric Bun
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
| | - Gautier Moroy
- Université Paris Cité, BFA, UMR 8251, CNRS, ERLU1133ParisFrance
| | - Alexandre Kauskot
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
| | - Olivier Christophe
- HITh, UMR_S1176, Institut National de la Santé et de la Recherche Médicale, Université Paris‐Saclayle Kremlin‐BicêtreFrance
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12
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Mangin PH, Gardiner EE, Ariëns RAS, Jandrot-Perrus M. Glycoprotein VI interplay with fibrin(ogen) in thrombosis. J Thromb Haemost 2023; 21:1703-1713. [PMID: 36990158 DOI: 10.1016/j.jtha.2023.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023]
Abstract
Platelets play a central role in the arrest of bleeding. The ability of platelets to engage with extracellular matrix proteins of the subendothelium has long been recognized as a pivotal platelet attribute, underpinning adequate hemostasis. The propensity of platelets to rapidly bind and functionally respond to collagen was one of the earliest documented events in platelet biology. The receptor primarily responsible for mediating platelet/collagen responses was identified as glycoprotein (GP) VI and successfully cloned in 1999. Since that time, this receptor has held the attention of many research groups, and through these efforts, we now have an excellent understanding of the roles of GPVI as a platelet- and megakaryocyte-specific adheso-signaling receptor in platelet biology. GPVI is considered a viable antithrombotic target, as data obtained from groups across the world is consistent with GPVI being less involved in physiological hemostatic processes but participating in arterial thrombosis. This review will highlight the key aspects of GPVI contributions to platelet biology and concentrate on the interaction with recently identified ligands, with a focus on fibrin and fibrinogen, discussing the role of these interactions in the growth and stability of thrombi. We will also discuss important therapeutic developments that target GPVI to modulate platelet function while minimizing bleeding outcomes.
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Affiliation(s)
- Pierre H Mangin
- Université de Strasbourg, Institut National de la Santé et de la Recherche Médicale, Etablissement Français du Sang Grand-Est, Unité Mixte de Recherche-S1255, Fédération de Médecine Translationnelle de Strasbourg F-67065 Strasbourg, France.
| | - Elizabeth E Gardiner
- The John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Robert A S Ariëns
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, United Kingdom
| | - Martine Jandrot-Perrus
- Université de Paris Institut National de la Santé et de la Recherche Médicale, UMR-S1148, Hôpital Bichat, Paris, France
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13
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Averyanova EV, Shkolnikova MN, Chugunova OV, Mazko ON. [Effects of triterpenoids in fatty products on liver condition of laboratory animals with acute toxic hepatitis]. Vopr Pitan 2023; 92:81-91. [PMID: 37801458 DOI: 10.33029/0042-8833-2023-92-4-81-91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/30/2023] [Indexed: 10/08/2023]
Abstract
One of the principles of prevention and non-medicamentous treatment of liver diseases, including hepatitis of different etiology, is the normalization of the diet through the consumption of food with physiologically active ingredients, in particular betulin, which helps to eliminate the causes of metabolic and oxidative disorders within liver cells. The aim of the research was to assess in vivo the influence of triterpene alcohol betulin extracted from Betula pendula Roth. birch bark in fat-containing products (for example mayonnaise) on the blood biochemical parameters and liver morphological structure of rats with initiated acute toxic hepatitis. Material and methods. Hepatoprotective and antioxidant activities of betulin as part of mayonnaise samples has been investigated in vivo on the model of toxic hepatitis initiated by carbon tetrachloride in male Wistar rats weighing 210-265 g. The animals were divided into 4 groups of 10 animals each: CG-1 - intact, CG-2 and MG - with carbon tetrachloride initiated toxic hepatitis. rats of the main groups were orally administered mayonnaise once a day at a dosage of 1 ml for 21 days after the formation of the model pathology: OG-1 with the added betulin (1 mg per 1 kg of body weight), OG-2 without betulin. Disorders of metabolic and oxidative processes in liver cells of animals were evaluated by biochemical indicators of blood plasma: the level of glucose, albumin, total cholesterol, triglycerides and urea and the activity of alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase and γ-glutamyltransferase. Oxidative stress in rats was estimated by the activity of catalase and superoxide dismutase in blood hemolysate (at a dilution of 1:200 and 1:10, respectively); the total prooxidant (in blood plasma) and total antioxidant (in blood hemolysate at a dilution of 1:10) activity were determined spectrophotometrically (colored complexes of TWIN-80 oxidation products with thiobarbituric acid). The morphological structure of rats' liver was estimated by microscopy of prepared cuts of hepatic tissue. Results. Based on biochemical parameters of rat blood plasma, it has been established that the administration of mayonnaise with betulin prevents the development of cytolic syndrome and suppresses the process of peroxidation by directly neutralizing free radicals. Aspartate aminotransferase and alkaline phosphatase activity in blood plasma of the experimental animals of the main group MG-1 reduced by 20.7 and 35.2% compared with indicators of the rats of the main group MG-2. Glucose concentration normalized to the level of the control group CG-1. The concentration of bilirubin and triglycerides decreased by 22.9 and by 48.1%, which indicates a significant reduction in the indicators of cholestatic syndrome in the group of animals OG-1 compared to OG-2. The total prooxidant activity and the concentration of thiobarbiturate-reactive products decreased compared to the CG-2 and MG-2 groups, which indicates the suppression of oxidative stress and, as a result, an improvement in liver conditions of animals with toxic hepatitis even when taking a fat-containing product. In liver histopeparates of animals receiving mayonnaise with betulin, necrobotic changes were less pronounced in comparison with the group MG-2. They were estimated at 1 point: small-drip dystrophy spots were found, haemorrhages in the interregional septum with inflammatory infiltration in the course of hemorrhages against the presence of necrosis hepatocytes with pronounced adipose dystrophy in the centres of the lobules, step necrosis with signs of replacing the damaged hepatocytes of the connective tissue, accompanied by centrolobular hemorrhages in MG-2 rats. Conclusion. Introduced into the composition of mayonnaise betulin, reduces the development of cytolic syndrome in toxic hepatitis and suppresses the process of peroxidation, on the basis of which fat-containing foods with betulin can be recommended for clinical examination as specialized products in acute and chronic liver diseases, including complicated cholestasis.
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Affiliation(s)
- E V Averyanova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - M N Shkolnikova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - O V Chugunova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - O N Mazko
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
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14
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Fuseya S, Izumi H, Hamano A, Murakami Y, Suzuki R, Koiwai R, Hayashi T, Kuno A, Takahashi S, Kudo T. Reduction in disialyl-T antigen levels in mice deficient for both St6galnac3 and St6galnac4 results in blood filling of lymph nodes. Sci Rep 2023; 13:10582. [PMID: 37386100 PMCID: PMC10310836 DOI: 10.1038/s41598-023-37363-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023] Open
Abstract
Sialic acid (SA) is present at the terminal ends of carbohydrate chains in glycoproteins and glycolipids and is involved in various biological phenomena. The biological function of the disialyl-T (SAα2-3Galβ1-3(SAα2-6)GalNAcα1-O-Ser/Thr) structure is largely unknown. To elucidate the role of disialyl-T structure and determine the key enzyme from the N-acetylgalactosaminide α2,6-sialyltransferase (St6galnac) family involved in its in vivo synthesis, we generated St6galnac3- and St6galnac4-deficient mice. Both single-knockout mice developed normally without any prominent phenotypic abnormalities. However, the St6galnac3::St6galnact4 double knockout (DKO) mice showed spontaneous hemorrhage of the lymph nodes (LN). To identify the cause of bleeding in the LN, we examined podoplanin, which modifies the disialyl-T structures. The protein expression of podoplanin in the LN of DKO mice was similar to that in wild-type mice. However, the reactivity of MALII lectin, which recognizes disialyl-T, in podoplanin immunoprecipitated from DKO LN was completely abolished. Moreover, the expression of vascular endothelial cadherin was reduced on the cell surface of high endothelial venule (HEV) in the LN, suggesting that hemorrhage was caused by the structural disruption of HEV. These results suggest that podoplanin possesses disialyl-T structure in mice LN and that both St6galnac3 and St6galnac4 are required for disialyl-T synthesis.
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Affiliation(s)
- Sayaka Fuseya
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, 305-8565, Japan
| | - Hiroyuki Izumi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Ayane Hamano
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yuka Murakami
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
- School of Integrative and Global Majors, University of Tsukuba, Ibaraki, 305-8575, Japan
| | - Riku Suzuki
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Rikako Koiwai
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Takuto Hayashi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Atsushi Kuno
- Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, 305-8565, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Takashi Kudo
- Laboratory Animal Resource Center in Transborder Medical Research Center, and Department of Anatomy and Embryology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
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15
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Roullet S, Luc N, Rayes J, Solarz J, Disharoon D, Ditto A, Gahagan E, Pawlowski C, Sefiane T, Adam F, Casari C, Christophe OD, Bruckman M, Lenting PJ, Sen Gupta A, Denis CV. Efficacy of platelet-inspired hemostatic nanoparticles on bleeding in von Willebrand disease murine models. Blood 2023; 141:2891-2900. [PMID: 36928925 PMCID: PMC10315625 DOI: 10.1182/blood.2022018956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/17/2023] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
The lack of innovation in von Willebrand disease (VWD) originates from many factors including the complexity and heterogeneity of the disease but also from a lack of recognition of the impact of the bleeding symptoms experienced by patients with VWD. Recently, a few research initiatives aiming to move past replacement therapies using plasma-derived or recombinant von Willebrand factor (VWF) concentrates have started to emerge. Here, we report an original approach using synthetic platelet (SP) nanoparticles for the treatment of VWD type 2B (VWD-2B) and severe VWD (type 3 VWD). SP are liposomal nanoparticles decorated with peptides enabling them to concomitantly bind to collagen, VWF, and activated platelets. In vitro, using various microfluidic assays, we show the efficacy of SPs to improve thrombus formation in VWF-deficient condition (with human platelets) or using blood from mice with VWD-2B and deficient VWF (VWF-KO, ie, type 3 VWD). In vivo, using a tail-clip assay, SP treatment reduced blood loss by 35% in mice with VWD-2B and 68% in mice with VWF-KO. Additional studies using nanoparticles decorated with various combinations of peptides demonstrated that the collagen-binding peptide, although not sufficient by itself, was crucial for SP efficacy in VWD-2B; whereas all 3 peptides appeared necessary for mice with VWF-KO. Clot imaging by immunofluorescence and scanning electron microscopy revealed that SP treatment of mice with VWF-KO led to a strong clot, similar to those obtained in wild-type mice. Altogether, our results show that SP could represent an attractive therapeutic alternative for VWD, especially considering their long half-life and stability.
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Affiliation(s)
- Stéphanie Roullet
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Norman Luc
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH
| | - Julie Rayes
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Jean Solarz
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Dante Disharoon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH
| | | | | | | | - Thibaud Sefiane
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Frédéric Adam
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Caterina Casari
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Olivier D. Christophe
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | | | - Peter J. Lenting
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH
| | - Cécile V. Denis
- Laboratory for Hemostasis, Inflammation & Thrombosis, Unite Mixte de Recherche 1176 INSERM, Université Paris-Saclay, Le Kremlin-Bicêtre, France
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16
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Li Y, Wang H, Xi Y, Sun A, Wang L, Deng X, Chen Z, Fan Y. A mathematical model for assessing shear induced bleeding risk. Comput Methods Programs Biomed 2023; 231:107390. [PMID: 36745955 DOI: 10.1016/j.cmpb.2023.107390] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/16/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
PURPOSE The objective of this study is to develop a bleeding risk model for assessing device-induced bleeding risk in patients supported with blood contact medical devices (BCMDs). METHODS The mathematical model for evaluating bleeding risk considers the effects of shear stress on von Willebrand factor (vWF) unfolding, high molecular weight multimers-vWF (HMWM-vWF) degradation, platelet activation and receptor shedding and platelet-vWF binding ability. Functions of the effect of shear stress on the above factors are fitted/employed and solved by the Eulerian transport equation. An axial flow-through Couette device and two clinical VADs which are HeartWare Ventricular Assist Device (HVAD) and HeartMate II (HM II) blood pump were employed to perform the simulation to evaluate platelet receptor shedding (GPIbα and GPIIb/IIIa), loss of HWMW-vWF, platelet-vWF binding ability and bleeding risk for validating the accuracy of our model. RESULTS The platelet-vWF binding ability after being subjected to high shear region in the axial flow-through Couette device predicted by our bleeding model was highly consistent with reported experimental data. As indicated by our CFD simulation results in the axial flow-through Couette device, it can find that an increase in shear stress led to a decrease in the adhesion ability of platelets on vWF, while the binding ability of vWF with platelets first increase and then decrease as shear stress elevates gradually beyond a threshold. The factor of exposure time can enhance the effect of shear stress. Additionally, the shear-induced bleeding risk predicted by our model increases with increasing shear stress and exposure time in an axial flow-through Couette device. As indicated by our numerical model, the bleeding risk in HVAD was higher than HMII, which is highly consistent with the meta-analysis based on clinical statistics. Our simulation investigations in these two clinical VADs also found that HVAD caused a higher rate of platelet receptor shedding and lower damage to HWMW-vWF than HeartMate II. The high shear stress generated in the narrow and turbulent regions of both VADs was the underlying cause of device-induced bleeding. CONCLUSION In this study, the shear-induced bleeding risk predicted by our bleeding model in axial flow-through Couette device and two clinical VADs is consistent or highly correlated with experimental and clinical findings, which proves the accuracy of our bleeding model. Our bleeding model can be used to aid the development of new BCMDs with improved functional characteristics and biocompatibility, and help to reduce risk of device-induced adverse events in patients.
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Affiliation(s)
- Yuan Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hongyu Wang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Yifeng Xi
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Anqiang Sun
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Lizhen Wang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Xiaoyan Deng
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Zengsheng Chen
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China.
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China.
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Wang A, Zhang K, Fu C, Zhou C, Yan Z, Liu X. Alleviation effect of conjugated linoleic acid on estradiol benzoate induced fatty liver hemorrhage syndrome in Hy-line male chickens. J Anim Sci 2023; 101:skad045. [PMID: 36751705 PMCID: PMC9985313 DOI: 10.1093/jas/skad045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/04/2023] [Indexed: 02/09/2023] Open
Abstract
The purpose of this study was to explore whether conjugated linoleic acid (CLA) could alleviate fatty liver hemorrhagic syndrome (FLHS) induced by estradiol benzoate intramuscular injection in laying hens. One hundred male Hy-Line white chickens were randomly divided into two groups, namely, the control (CON) and estradiol benzoate (E) groups, and both groups were fed the same basal diet. After injections of estradiol benzoate at 2 mg/kg every two days for a total of 7 times, chickens in the E group showed FLHS symptoms, including liver enlargement, hemorrhage, and steatosis. Then half of the chickens in the E group received an additional diet containing 5000 mg/kg CLA for 8 weeks. The results of morphological observations, hematoxylin and eosin staining, and Oil Red O staining showed that CLA alleviated liver enlargement, hemorrhage, and lipid accumulation in FLHS chickens. In addition, we measured liver function and lipid metabolism indicators, including ALT, AST, TG, TCH, HDL-C, and LDL-C, which further suggested that CLA mitigated the disturbance of serum and liver metabolism in FLHS chickens. Mechanistically, CLA inhibited hepatic de novo lipogenesis, cholesterol synthesis, and TG accumulation and increased TG hydrolysis in FLHS chickens by regulating the gene expression of CD36, ACC, FAS, SCD 1, DGAT2, LIPE, ATGL, CPT1A, SREBP-1c, SREBP-2, PPARγ, and PPARα. Furthermore, CLA ameliorated hepatic oxidative stress and inhibited NF-κB signaling pathway-mediated inflammation in FLHS chickens. In conclusion, CLA regulated lipid metabolism, thus further alleviating oxidative stress and inflammation to alleviate FLHS induced by estrogen in chickens.
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Affiliation(s)
- Anqi Wang
- College of Animal Science and Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian 271018, China
| | - Kexin Zhang
- College of Animal Science and Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian 271018, China
| | - Chunyan Fu
- Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Key Laboratory of Poultry Diseases Diagnosis and Immunology, Jinan 250100, China
- Poultry Breeding Engineering Technology Center of Shandong Province, Jinan 250100, China
| | - Changming Zhou
- College of Pharmacy, Heze University, Heze 274015, China
| | - Zhengui Yan
- College of Animal Science and Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian 271018, China
| | - Xuelan Liu
- Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Shandong Provincial Key Laboratory of Poultry Diseases Diagnosis and Immunology, Jinan 250100, China
- Poultry Breeding Engineering Technology Center of Shandong Province, Jinan 250100, China
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Dangelmaier C, Mauri B, Patel A, Kunapuli SP, Kostyak JC. D121 Located within the DRY Motif of P2Y12 Is Essential for P2Y12-Mediated Platelet Function. Int J Mol Sci 2022; 23:ijms231911519. [PMID: 36232816 PMCID: PMC9569438 DOI: 10.3390/ijms231911519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
Platelets are anucleate cells that mediate hemostasis. This occurs via a primary signal that is reinforced by secreted products such as ADP that bind purinergic receptors (P2Y1 and P2Y12) on the platelet surface. We recently identified a human subject, whom we termed platelet defect subject 25 (PDS25) with a platelet functional disorder associated with the P2Y12 receptor. PDS25 has normal blood cell counts and no history of bleeding diathesis. However, platelets from PDS25 have virtually no response to 2-MeSADP (a stable analogue of ADP). Genetic analysis of P2Y12 from PDS25 revealed a heterozygous mutation of D121N within the DRY motif. Rap1b activity was reduced in platelets from PDS25, while VASP phosphorylation was enhanced, suggesting that signaling from the P2Y12 receptor was interrupted by the heterozygous mutation. To explore this further, we produced knock-in mice that mimic our subject. Bleeding failed to cease in homozygous KI mice during tail bleeding assays, while tail bleeding times did not differ between WT and heterozygous KI mice. Furthermore, occlusions failed to form in most homozygous KI mice following carotid artery injury via FeCl3. These data indicate that the aspartic acid residue found in the DRY motif of P2Y12 is essential for P2Y12 function.
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Affiliation(s)
- Carol Dangelmaier
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Benjamin Mauri
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Akruti Patel
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Satya P. Kunapuli
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - John C Kostyak
- Cardeza Center for Hemostasis, Thrombosis, and Vascular Biology, Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Correspondence: ; Tel.: +215-503-9332; Fax: +215-955-9170
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Golomingi M, Kohler J, Jenny L, Hardy ET, Dobó J, Gál P, Pál G, Kiss B, Lam WA, Schroeder V. Complement lectin pathway components MBL and MASP-1 promote haemostasis upon vessel injury in a microvascular bleeding model. Front Immunol 2022; 13:948190. [PMID: 36032172 PMCID: PMC9412763 DOI: 10.3389/fimmu.2022.948190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundComplement lectin pathway components, in particular mannan-binding lectin (MBL) and MBL-associated serine proteases (MASPs) have been shown to interact with coagulation factors and contribute to clot formation. Here we investigated the role of MBL and MASP-1 in the haemostatic response following mechanical vessel injury in a human microfluidic bleeding model.MethodsWe studied haemostasis in a microvascular bleeding model in the presence of human endothelial cells and human whole blood under flow conditions. We monitored incorporation of proteins into the clot with fluorescently labelled antibodies and studied their effects on clot formation, platelet activation, and bleeding time with specific inhibitors. Platelet activation was also studied by flow cytometry.ResultsUpon vessel injury, MBL accumulated at the injury site in a well-defined wall-like structure. MBL showed partial colocalisation with fibrin, and strong colocalisation with von Willebrand factor and (activated) platelets. Flow cytometry ruled out direct binding of MBL to platelets, but confirmed a PAR4- and thrombin-dependent platelet-activating function of MASP-1. Inhibiting MBL during haemostasis reduced platelet activation, while inhibiting MASP-1 reduced platelet activation, fibrin deposition and prolonged bleeding time.ConclusionWe show in a microvascular human bleeding model that MBL and MASP-1 have important roles in the haemostatic response triggered by mechanical vessel injury: MBL recognises the injury site, while MASP-1 increases fibrin formation, platelet activation and shortens bleeding time. While the complement lectin pathway may be harmful in the context of pathological thrombosis, it appears to be beneficial during the physiological coagulation response by supporting the crucial haemostatic system.
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Affiliation(s)
- Murielle Golomingi
- Experimental Haemostasis Group, Department for BioMedical Research, DBMR, University of Bern, Bern, Switzerland
| | - Jessie Kohler
- Experimental Haemostasis Group, Department for BioMedical Research, DBMR, University of Bern, Bern, Switzerland
| | - Lorenz Jenny
- Experimental Haemostasis Group, Department for BioMedical Research, DBMR, University of Bern, Bern, Switzerland
| | - Elaissa T. Hardy
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
| | - József Dobó
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Péter Gál
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, Hungary
| | - Gábor Pál
- Department of Biochemistry, Eötvös Loránd University, Budapest, Hungary
| | - Bence Kiss
- Department of Biochemistry, Eötvös Loránd University, Budapest, Hungary
| | - Wilbur A. Lam
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
| | - Verena Schroeder
- Experimental Haemostasis Group, Department for BioMedical Research, DBMR, University of Bern, Bern, Switzerland
- *Correspondence: Verena Schroeder,
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Xu R, Huang Y, Zhu D, Guo J. Iron promotes Slc7a11-deficient valvular interstitial cell osteogenic differentiation: A possible mechanism by which ferroptosis participates in intraleaflet hemorrhage-induced calcification. Free Radic Biol Med 2022; 184:158-169. [PMID: 35331838 DOI: 10.1016/j.freeradbiomed.2022.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 01/18/2023]
Abstract
Calcific aortic valve disease (CAVD) is the most frequent pathogeny of aortic valve replacement in developed countries. Iron deposits are found in the intraleaflet hemorrhage (IH) areas of calcific aortic valves. Ferroptosis is a form of regulated cell death that involves metabolic dysfunction resulting from iron overload-dependent excessive lipid peroxidation. In this study, histological analysis showed that ferroptosis occurs in the IH areas of calcific aortic valves. We also demonstrated that Slc7a11 is expressed at low levels in OM-treated valvular interstitial cells (VICs) and IH areas and that low Slc7a11 expression is associated with calcification in CAVD. However, iron overload treatment did not promote VIC calcification under osteogenic conditions in vitro. Using lentiviral transfection to knockdown Slc7a11 in VICs, we found that the degree of iron overload-induced ferroptosis was positively increased in vitro. Finally, we also found that Slc7a11 knockdown promoted the osteogenic differentiation of VICs in vitro. In summary, this study reports a novel mechanism linking ferroptosis and CAVD development in which iron may promote Slc7a11-deficient VIC osteogenic differentiation by aggravating ferroptosis in vitro, thereby accelerating the progression of aortic valve calcification.
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Affiliation(s)
- Ran Xu
- Department of Cardiovascular Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Huaihai Road, Shanghai, 200000, China.
| | - Ying Huang
- Department of Cardiology, Shanghai East Hospital, Tongji University, Jimo Road, Shanghai, 200000, China.
| | - Dan Zhu
- Department of Cardiovascular Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Huaihai Road, Shanghai, 200000, China.
| | - Jianghong Guo
- The Rugao People's Hospital, Teaching Hospital of Nantong University, Rugao, Ninghai Road, Nantong, 226500, China.
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21
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Hoermann H, Krueger I, Maurus N, Reusswig F, Sun Y, Kohlmorgen C, Grandoch M, Fischer JW, Elvers M. The Proteoglycan Biglycan Modulates Platelet Adhesion and Thrombus Formation in a GPVI-Dependent Manner. Int J Mol Sci 2021; 22:12168. [PMID: 34830059 PMCID: PMC8622445 DOI: 10.3390/ijms222212168] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Vascular injury induces the exposure of subendothelial extracellular matrix (ECM) important to serve as substrate for platelets to adhere to the injured vessel wall to avoid massive blood loss. Different ECM proteins are known to initiate platelet adhesion and activation. In atherosclerotic mice, the small, leucine-rich proteoglycan biglycan is important for the regulation of thrombin activity via heparin cofactor II. However, nothing is known about the role of biglycan for hemostasis and thrombosis under nonatherosclerotic conditions. METHODS The role of biglycan for platelet adhesion and thrombus formation was investigated using a recombinant protein and biglycan knockout mice. RESULTS The present study identified biglycan as important ECM protein for the adhesion and activation of platelets, and the formation of three-dimensional thrombi under flow conditions. Platelet adhesion to immobilized biglycan induces the reorganization of the platelet cytoskeleton. Mechanistically, biglycan binds and activates the major collagen receptor glycoprotein (GP)VI, because reduced platelet adhesion to recombinant biglycan was observed when GPVI was blocked and enhanced tyrosine phosphorylation in a GPVI-dependent manner was observed when platelets were stimulated with biglycan. In vivo, the deficiency of biglycan resulted in reduced platelet adhesion to the injured carotid artery and prolonged bleeding times. CONCLUSIONS Loss of biglycan in the vessel wall of mice but not in platelets led to reduced platelet adhesion at the injured carotid artery and prolonged bleeding times, suggesting a crucial role for biglycan as ECM protein that binds and activates platelets via GPVI upon vessel injury.
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Affiliation(s)
- Henrike Hoermann
- Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany; (H.H.); (I.K.); (N.M.); (F.R.)
| | - Irena Krueger
- Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany; (H.H.); (I.K.); (N.M.); (F.R.)
| | - Nadine Maurus
- Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany; (H.H.); (I.K.); (N.M.); (F.R.)
| | - Friedrich Reusswig
- Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany; (H.H.); (I.K.); (N.M.); (F.R.)
| | - Yi Sun
- Centre of Membrane Proteins and Receptors (COMPARE), Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK;
| | - Christina Kohlmorgen
- Institute for Pharmacology und Clinical Pharmacology, University Hospital of the Heinrich-Heine-University, 40225 Düsseldorf, Germany; (C.K.); (M.G.); (J.W.F.)
| | - Maria Grandoch
- Institute for Pharmacology und Clinical Pharmacology, University Hospital of the Heinrich-Heine-University, 40225 Düsseldorf, Germany; (C.K.); (M.G.); (J.W.F.)
| | - Jens W. Fischer
- Institute for Pharmacology und Clinical Pharmacology, University Hospital of the Heinrich-Heine-University, 40225 Düsseldorf, Germany; (C.K.); (M.G.); (J.W.F.)
| | - Margitta Elvers
- Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany; (H.H.); (I.K.); (N.M.); (F.R.)
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22
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Brøns N, Leinøe E, Salado-Jimena JA, Rossing M, Ostrowski SR. Levels of procoagulant microparticles expressing phosphatidylserine contribute to bleeding phenotype in patients with inherited thrombocytopenia. Blood Coagul Fibrinolysis 2021; 32:480-490. [PMID: 34475331 DOI: 10.1097/mbc.0000000000001080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Inherited thrombocytopenia is a heterogeneous group of hereditary disorders with varying bleeding tendencies, not simply related to platelet count. Platelets transform into different subpopulations upon stimulation, including procoagulant platelets and platelet microparticles (PMPs), which are considered critical for haemostasis. We aimed to investigate whether abnormalities in PMP and procoagulant platelet function were associated with the bleeding phenotype of inherited thrombocytopenia patients. We enrolled 53 inherited thrombocytopenia patients. High-throughput sequencing of 36 inherited thrombocytopenia related genes was performed in all patients and enabled a molecular diagnosis in 57%. Bleeding phenotype was evaluated using the ISTH bleeding assessment tool, dividing patients into bleeding (n = 27) vs. nonbleeding (n = 26). Unstimulated and ADP, TRAP or collagen-stimulated PMP and procoagulant platelet functions were analysed by flow cytometry using antibodies against granulophysin (CD63), P-selectin (CD62P), activated GPIIb/IIIa (PAC-1) and a marker for phosphatidylserine expression (lactadherin). Procoagulant platelets were measured in response to collagen stimulation. An in-house healthy reference level was available. Overall, higher levels of activated platelets, PMPs and procoagulant platelets were found in nonbleeding patients compared with the reference level. Nonbleeding patients had higher proportions of phosphatidylserine and PMPs compared with bleeding patients and the reference level, in response to different stimulations. Interestingly, this finding of high proportions of phosphatidylserine and PMPs was limited to PMPs, and not present in procoagulant platelets or platelets. Our findings indicate that nonbleeding inherited thrombocytopenia patients have compensatory mechanisms for improved platelet subpopulation activation and function, and that generation of phosphatidylserine expressing PMPs could be a factor determining bleeding phenotype in inherited thrombocytopenia.
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Affiliation(s)
- Nanna Brøns
- Department of Hematology
- Department of Clinical Immunology
| | | | | | - Maria Rossing
- Center for Genomic Medicine, Copenhagen University Hospital, Rigshospitalet, København, Denmark
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23
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Chen YC, Chou YC, Hsieh YT, Kuo PY, Yang ML, Chong HE, Wu CL, Shiau AL, Wang CR. Targeting Intra-Pulmonary P53-Dependent Long Non-Coding RNA Expression as a Therapeutic Intervention for Systemic Lupus Erythematosus-Associated Diffuse Alveolar Hemorrhage. Int J Mol Sci 2021; 22:ijms22136948. [PMID: 34203338 PMCID: PMC8268786 DOI: 10.3390/ijms22136948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/17/2021] [Accepted: 06/23/2021] [Indexed: 12/13/2022] Open
Abstract
Diffuse alveolar hemorrhage (DAH) in systemic lupus erythematosus (SLE) is associated with significant mortality, requiring a thorough understanding of its complex mechanisms to develop novel therapeutics for disease control. Activated p53-dependent apoptosis with dysregulated long non-coding RNA (lncRNA) expression is involved in the SLE pathogenesis and correlated with clinical activity. We examined the expression of apoptosis-related p53-dependent lncRNA, including H19, HOTAIR and lincRNA-p21 in SLE-associated DAH patients. Increased lincRNA-p21 levels were detected in circulating mononuclear cells, mainly in CD4+ and CD14+ cells. Higher expression of p53, lincRNA-p21 and cell apoptosis was identified in lung tissues. Lentivirus-based short hairpin RNA (shRNA)-transduced stable transfectants were created for examining the targeting efficacy in lncRNA. Under pristane stimulation, alveolar epithelial cells had increased p53, lincRNA-p21 and downstream Bax levels with elevated apoptotic ratios. After pristane injection, C57/BL6 mice developed DAH with increased pulmonary expression of p53, lincRNA-p21 and cell apoptosis. Intra-pulmonary delivery of shRNA targeting lincRNA-p21 reduced hemorrhage frequencies and improved anemia status through decreasing Bax expression and cell apoptosis. Our findings demonstrate increased p53-dependent lncRNA expression with accelerated cell apoptosis in the lungs of SLE-associated DAH patients, and show the therapeutic potential of targeting intra-pulmonary lncRNA expression in a pristane-induced model of DAH.
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Affiliation(s)
- Yi-Cheng Chen
- Department of Internal Medicine, Medical College and Hospital, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-C.C.); (H.-E.C.)
- Department of Medical Research, Ditmanson Medical Foundation, Chiayi Christian Hospital, Chiayi 600566, Taiwan
- Department of Biochemistry and Molecular Biology, National Cheng Kung University Medical College, Tainan 70403, Taiwan;
| | - Yu-Chi Chou
- Biomedical Translation Research Center, Academia Sinica, Taipei 11529, Taiwan;
| | - Yu-Tung Hsieh
- Department of Microbiology and Immunology, Medical College, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-T.H.); (P.-Y.K.); (M.-L.Y.); (A.-L.S.)
| | - Pin-Yu Kuo
- Department of Microbiology and Immunology, Medical College, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-T.H.); (P.-Y.K.); (M.-L.Y.); (A.-L.S.)
| | - Mei-Lin Yang
- Department of Microbiology and Immunology, Medical College, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-T.H.); (P.-Y.K.); (M.-L.Y.); (A.-L.S.)
| | - Hao-Earn Chong
- Department of Internal Medicine, Medical College and Hospital, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-C.C.); (H.-E.C.)
| | - Chao-Liang Wu
- Department of Biochemistry and Molecular Biology, National Cheng Kung University Medical College, Tainan 70403, Taiwan;
| | - Ai-Li Shiau
- Department of Microbiology and Immunology, Medical College, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-T.H.); (P.-Y.K.); (M.-L.Y.); (A.-L.S.)
| | - Chrong-Reen Wang
- Department of Internal Medicine, Medical College and Hospital, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-C.C.); (H.-E.C.)
- Department of Microbiology and Immunology, Medical College, National Cheng Kung University, Tainan 70403, Taiwan; (Y.-T.H.); (P.-Y.K.); (M.-L.Y.); (A.-L.S.)
- Correspondence: ; Tel.: +886-6-235-3535 (ext. 5366)
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Muster V, Gary T. Contrasts in Glioblastoma-Venous Thromboembolism versus Bleeding Risk. Cells 2021; 10:cells10061414. [PMID: 34200229 PMCID: PMC8228034 DOI: 10.3390/cells10061414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/02/2021] [Accepted: 06/04/2021] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma is among the tumor entities with an extreme thrombogenic potential and patients are at very high risk of developing a venous thromboembolism (VTE) over the course of the disease, with an incidence of up to 30% per year. Major efforts are currently being made to understand and gain novel insights into the underlying pathomechanisms of the development of VTE in patients with glioblastoma and to find appropriate biomarkers. Yet, patients with glioblastoma not only face a high thromboembolic risk but are also at risk of bleeding events. In the case of VTE, a therapeutic anticoagulation with low molecular weight heparin or, in the case of low bleeding risk, treatment with a direct oral anticoagulant, is recommended, according to recently published guidelines. With respect to an elevated bleeding risk in glioblastoma patients, therapeutic anticoagulation remains challenging in this patient group and prospective data for this vulnerable patient group are scarce, particularly with regard to direct oral anticoagulants.
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Bennacer A, Boukhalfa-Abib H, Laraba-Djebari F. "Computational and Functional Characterization of a Hemorrhagic Metalloproteinase Purified from Cerastes cerastes Venom". Protein J 2021; 40:589-599. [PMID: 34019197 DOI: 10.1007/s10930-021-09994-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2021] [Indexed: 11/30/2022]
Abstract
Structural and functional aspects of snake venoms metalloproteinases (SVMPs) have been extensively studied due to their role in envenomation. However, in the detection of certain coagulation disorders these biomolecules have been used and applied for the production of new thrombolytic drugs. CcMP-II, a SVMP-II metalloproteinase with a hemorrhagic activity, isolated from the venom of Cerastes cerastes, its sequence of 472 amino acids was identified. Predicted 3D structure showed an arrangement of CcMP-II into two distinct domains: i) a metalloproteinase domain where the zinc-binding motif is found (HXXGHNLGIDH) in addition to the sequence Cys-Ile-Met (CIM) at the Met-turn and ii) disintegrin-like domain containing RGD motif. CcMP-II inhibits platelet aggregation induced by collagen in a dose-dependent manner with an IC50 value estimated of 0.11 nM. This proteinase inhibits also aggregation of platelet stimulated by collagen even if the metal chelating agents (EDTA and 1, 10-phenontroline) are present suggesting that anti-aggregating effect is not due to its metalloproteinase domain, but to its disintegrin-like domain. Capillary pathological modifications caused by CcMP-II following intramuscular injection have as well been examined in mice. The key morphological alterations of the capillary vessels were clearly apparent from the ultrastructural study. The CcMP-II can play a key function in the pathogenesis of disorders that occurs following envenomation of Cerastes cerastes. The three-dimensional model of CcMP-II was built to explain structure-function relationships in ADAM/ADAMTs, a family of proteins having significant therapeutic potential. In order to explain structure-function relationships in ADAM / ADAMT, a family of proteins with considerable therapeutic potential, the three-dimensional model of CcMP-II was constructed.
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Affiliation(s)
- Amel Bennacer
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria
| | - Hinda Boukhalfa-Abib
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria.
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Driever EG, Stravitz RT, Zhang J, Adelmeijer J, Durkalski V, Lee WM, Lisman T. VWF/ADAMTS13 Imbalance, But Not Global Coagulation or Fibrinolysis, Is Associated With Outcome and Bleeding in Acute Liver Failure. Hepatology 2021; 73:1882-1891. [PMID: 32767567 PMCID: PMC8251778 DOI: 10.1002/hep.31507] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/03/2020] [Accepted: 07/26/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Recent studies of acute liver failure (ALF) in man and animals have suggested that rebalanced hemostasis occurs, with distinct hypercoagulable features clinically evidenced by a low risk of bleeding. Rodent models have shown a link between intrahepatic microthrombus formation and progression of ALF. We sought to confirm these earlier findings in a large series of patients with well-characterized ALF from the Acute Liver Failure Study Group. APPROACH AND RESULTS Citrated plasma samples taken on admission from 676 patients with ALF or acute liver injury (international normalized ratio ≥2.0 without hepatic encephalopathy) were used to determine levels of von Willebrand factor (VWF), a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS13) activity, thrombomodulin-modified thrombin generation, and clot lysis time (CLT) and compared with the levels in 40 healthy controls. Patients had 3-fold increased VWF levels, 4-fold decreased ADAMTS13 activity, similar thrombin generating capacity, and 2.4-fold increased CLT, compared with controls. Increasing disease severity was associated with progressively more elevated VWF levels as well as hypofibrinolysis. Patients who died or underwent liver transplantation within 21 days of admission had higher VWF levels, lower ADAMTS13 activity, but similar thrombin generation and a similar proportion of patients with severe hypofibrinolysis, when compared with transplant-free survivors. Likewise, patients with bleeding complications had higher VWF levels and lower ADAMTS13 activity compared to those without bleeding. Thrombin generation and CLT did not differ significantly between bleeding and nonbleeding patients. CONCLUSIONS Rebalanced hemostatic status was confirmed in a large cohort of patients with acute liver injury/ALF, demonstrating that VWF/ADAMTS13 imbalance is associated with poor outcome and bleeding. The association between VWF/ADAMTS13 imbalance and bleeding suggests that bleeding in ALF relates more to systemic inflammation than a primary coagulopathy.
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Affiliation(s)
- Ellen G. Driever
- Surgical Research LaboratoryDepartment of SurgeryUniversity of GroningenUniversity Medical Center GroningenGroningenthe Netherlands
| | - R. Todd Stravitz
- Section of Hepatology and Hume‐Lee Transplant CenterVirginia Commonwealth UniversityRichmondVA
| | - Jingwen Zhang
- Department of BiostatisticsMedical University of South CarolinaCharlestonSC
| | - Jelle Adelmeijer
- Surgical Research LaboratoryDepartment of SurgeryUniversity of GroningenUniversity Medical Center GroningenGroningenthe Netherlands
| | - Valerie Durkalski
- Department of BiostatisticsMedical University of South CarolinaCharlestonSC
| | - William M. Lee
- Division of Digestive and Liver DiseasesUniversity of Texas Southwestern Medical CenterDallasTX
| | - Ton Lisman
- Surgical Research LaboratoryDepartment of SurgeryUniversity of GroningenUniversity Medical Center GroningenGroningenthe Netherlands
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Osaka Y, Kitani Y. Blood loss induces l-amino acid oxidase gene expression in the head kidney of the red-spotted grouper, Epinephelus akaara. Dev Comp Immunol 2021; 114:103842. [PMID: 32866581 DOI: 10.1016/j.dci.2020.103842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/03/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
In fish, the innate immune system is more important than the adaptive immune system because it responds quickly and nonspecifically to protect against pathogens. Thus, a variety of innate immune molecules have been found in fish. Recently, l-amino acid oxidases (LAOs) were discovered as a new member of the antibacterial protein from fish skin mucus and serum. In this study, we newly found an antibacterial LAO in red-spotted grouper (Epinephelus akaara) serum. It showed a broad range of substrate specificity with aromatic and hydrophobic amino acids. The grouper LAO gene had a low expression level in the kidney under normal conditions; however, it was significantly upregulated by blood loss 1 day after bleeding. In addition, the LAO activity in the serum recovered within 3 days in the same experiment. This quick recovery may indicate that the LAO is an essential innate immune molecule in the whole grouper body.
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Affiliation(s)
- Yuto Osaka
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Ogi Mu 4-1 Noto-Cho, Ishikawa, 927-0553, Japan
| | - Yoichiro Kitani
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Ogi Mu 4-1 Noto-Cho, Ishikawa, 927-0553, Japan.
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Abstract
Background Intramyocardial hemorrhage following reperfusion is strongly associated with major adverse cardiovascular events in myocardial infarction (MI) patients; yet the mechanisms contributing to these outcomes are not well understood. Large animal models have been used to investigate intramyocardial hemorrhage, but they are exorbitantly expensive and difficult to use for mechanistic studies. In contrast, rat models are widely used to investigate mechanistic aspects of cardiovascular physiology, but a rat model that consistently recapitulates the characteristics of an hemorrhagic MI does not exist. To bridge this gap, we investigated the physiological conditions of MI that would create intramyocardial hemorrhage in rats so that a reliable model of hemorrhagic MI would become available for basic research. Methods & results Sprague-Dawley rats underwent either a 90-minute (90-min) ischemia and then reperfusion (I/R) (n = 22) or 30-minute (30-min) I/R (n = 18) of the left anterior descending coronary artery. Sham rats (n = 12) were used as controls. 90-min I/R consistently yielded hemorrhagic MI, while 30-min I/R consistently yielded non-hemorrhagic MI. Twenty-four hours post-reperfusion, ex-vivo late-gadolinium-enhancement (LGE) and T2* cardiac MRI performed on excised hearts from 90-min I/R rats revealed colocalization of iron deposits within the scarred tissue; however, in 30-min I/R rats scar was evident on LGE but no evidence of iron was found on T2* CMR. Histological studies verified tissue damage (H&E) detected on LGE and the presence of iron (Perl’s stain) observed on T2*-CMR. At week 4 post-reperfusion, gene and protein expression of proinflammatory markers (TNF-α, IL-1β and MMP-9) were increased in the 90-min I/R group when compared to 30-min I/R groups. Further, transmission electron microscopy performed on 90-min I/R myocardium that were positive for iron on T2* CMR and Perl’s stain showed accumulation of granular iron particles within the phagosomes. Conclusion Ischemic time prior to reperfusion is a critical factor in determining whether a MI is hemorrhagic or non-hemorrhagic in rats. Specifically, a period of 90-min of ischemia prior to reperfusion can produce rat models of hemorrhagic MI, while 30-minutes of ischemia prior to reperfusion can ensure that the MIs are non-hemorrhagic. Hemorrhagic MIs in rats result in marked increase in iron deposition, proinflammatory burden and adverse left—ventricular remodeling compared to rats with non-hemorrhagic MIs.
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Affiliation(s)
- Anand R. Nair
- Cedars-Sinai Medical Center, Department of Biomedical Sciences, Biomedical Imaging Research Institute, Los Angeles, CA, United States of America
| | - Eric A. Johnson
- Cedars-Sinai Medical Center, Department of Biomedical Sciences, Biomedical Imaging Research Institute, Los Angeles, CA, United States of America
- Department of Bioengineering, University of California, Los Angeles, CA, United States of America
| | - Hsin-Jung Yang
- Cedars-Sinai Medical Center, Department of Biomedical Sciences, Biomedical Imaging Research Institute, Los Angeles, CA, United States of America
| | - Ivan Cokic
- Cedars-Sinai Medical Center, Department of Biomedical Sciences, Biomedical Imaging Research Institute, Los Angeles, CA, United States of America
- Division of Cardiology, Department of Medicine, University of California, Los Angeles, CA, United States of America
| | - Joseph Francis
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, United States of America
| | - Rohan Dharmakumar
- Cedars-Sinai Medical Center, Department of Biomedical Sciences, Biomedical Imaging Research Institute, Los Angeles, CA, United States of America
- Division of Cardiology, Department of Medicine, University of California, Los Angeles, CA, United States of America
- * E-mail:
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Zirak MR, Karimi G, Rahimian R, Jafarian AH, Hayes AW, Mehri S. Tropisetron ameliorates cyclophosphamide-induced hemorrhagic cystitis in rats. Eur J Pharmacol 2020; 883:173310. [PMID: 32619674 DOI: 10.1016/j.ejphar.2020.173310] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 01/05/2023]
Abstract
Hemorrhagic cystitis is one of the most important complications of cyclophosphamide, a drug widely used in cancer chemotherapy and bone marrow transplantation. 5-HT3 antagonists are anti-emetic agents and have been shown to have notable anti-inflammatory and antioxidant properties. This study was designed to investigate the possible protective effects of tropisetron against cyclophosphamide-induced hemorrhagic cystitis in rats. Hemorrhagic cystitis was induced in female rats by cyclophosphamide (270 mg/kg). Tropisetron (2.5, 5 and 7.5 mg/kg), granisetron (2.5 and 5 mg/kg), and ondansetron (5 mg/kg) were injected 15 min before, 4 and 8 h after cyclophosphamide. To evaluate the role of alpha7 nicotinic acetylcholine receptor (α7nAChR), its antagonist, methyllycaconitine (5 mg/kg) was administered 30 min before tropisetron. After 24 h, animals were killed under anesthesia. Macroscopic and histological changes were evaluated. Malondialdehyde (MDA), glutathione (GSH) and Evans blue were measured spectrophotometrically. Furthermore, the protein levels of p38 mitogen-activated protein kinases (P38 MAPK), p-P38, signal transducer and activator of transcription 3 (STAT3), p-STAT3 and Poly (ADP-ribose) polymerase (PARP) were determined using Western blot. Cyclophosphamide administration significantly induced histopathological damages and increased MDA, p-p38/p38, p-STAT3/STAT3, and PARP levels compared with the saline group. Tropisetron treatment diminished histopathological injuries as well as MDA level, and STAT3 activity compared to cyclophosphamide treated rats. Co-administration of methyllycaconitine with tropisetron, partially or completely reversed the protective effects of tropisetron. Our results showed that prophylactic administration of tropisetron markedly ameliorated the cyclophosphamide-induced bladder hemorrhage and inflammation in rats. These effects of tropisetron were α7nAChR dependent.
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Affiliation(s)
- Mohammad Reza Zirak
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Rahimian
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada
| | - Amir Hossein Jafarian
- Cancer Molecular Pathology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - A Wallace Hayes
- University of South Florida College of Public Health, Tampa, FL, USA; Michigan State University, East Lansing, MI, USA
| | - Soghra Mehri
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Sewduth R, Pandolfi S, Steklov M, Sheryazdanova A, Zhao P, Criem N, Baietti M, Lechat B, Quarck R, Impens F, Sablina A. The Noonan Syndrome Gene Lztr1 Controls Cardiovascular Function by Regulating Vesicular Trafficking. Circ Res 2020; 126:1379-1393. [PMID: 32175818 PMCID: PMC8575076 DOI: 10.1161/circresaha.119.315730] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
RATIONALE Noonan syndrome (NS) is one of the most frequent genetic disorders. Bleeding problems are among the most common, yet poorly defined complications associated with NS. A lack of consensus on the management of bleeding complications in patients with NS indicates an urgent need for new therapeutic approaches. OBJECTIVE Bleeding disorders have recently been described in patients with NS harboring mutations of LZTR1 (leucine zipper-like transcription regulator 1), an adaptor for CUL3 (CULLIN3) ubiquitin ligase complex. Here, we assessed the pathobiology of LZTR1-mediated bleeding disorders. METHODS AND RESULTS Whole-body and vascular specific knockout of Lztr1 results in perinatal lethality due to cardiovascular dysfunction. Lztr1 deletion in blood vessels of adult mice leads to abnormal vascular leakage. We found that defective adherent and tight junctions in Lztr1-depleted endothelial cells are caused by dysregulation of vesicular trafficking. LZTR1 affects the dynamics of fusion and fission of recycling endosomes by controlling ubiquitination of the ESCRT-III (endosomal sorting complex required for transport III) component CHMP1B (charged multivesicular protein 1B), whereas NS-associated LZTR1 mutations diminish CHMP1B ubiquitination. LZTR1-mediated dysregulation of CHMP1B ubiquitination triggers endosomal accumulation and subsequent activation of VEGFR2 (vascular endothelial growth factor receptor 2) and decreases blood levels of soluble VEGFR2 in Lztr1 haploinsufficient mice. Inhibition of VEGFR2 activity by cediranib rescues vascular abnormalities observed in Lztr1 knockout mice Conclusions: Lztr1 deletion phenotypically overlaps with bleeding diathesis observed in patients with NS. ELISA screening of soluble VEGFR2 in the blood of LZTR1-mutated patients with NS may predict both the severity of NS phenotypes and potential responders to anti-VEGF therapy. VEGFR inhibitors could be beneficial for the treatment of bleeding disorders in patients with NS.
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Affiliation(s)
- R. Sewduth
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - S. Pandolfi
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M. Steklov
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - A. Sheryazdanova
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - P. Zhao
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - N. Criem
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M.F. Baietti
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - B. Lechat
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - R. Quarck
- University Hospitals and Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - F. Impens
- Department of Biomolecular Medicine, Ghent University, B-9000 Ghent, Belgium
- VIB Center for Medical Biotechnology, B-9000 Ghent, Belgium
- VIB Proteomics Core, Albert Baertsoenkaai 3, 9000 Ghent, Belgium
| | - A.A. Sablina
- VIB-KU Leuven Center for Cancer Biology, VIB, Herestraat 49, 3000 Leuven, Belgium
- Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
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Mujaj B, Bos D, Kavousi M, van der Lugt A, Staessen JA, Franco OH, Vernooij MW. Serum insulin levels are associated with vulnerable plaque components in the carotid artery: the Rotterdam Study. Eur J Endocrinol 2020; 182:343-350. [PMID: 31958313 PMCID: PMC7087499 DOI: 10.1530/eje-19-0620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 01/20/2020] [Indexed: 01/14/2023]
Abstract
BACKGROUND To investigate the association between fasting serum insulin and glucose levels with atherosclerotic plaque composition in the carotid artery. Impaired insulin and glucose levels are implicated in the etiology of cardiovascular disease; however, their influence on the formation and composition of atherosclerotic plaque remains unclear. METHODS In 1740 participants (mean age 72.9 years, 46% women, 14.4% diabetes mellitus) from the population-based Rotterdam Study, we performed carotid MRI to evaluate the presence of calcification, lipid core, and intraplaque hemorrhage in carotid atherosclerosis. All participants also underwent blood sampling to obtain information on serum insulin and glucose levels. Using logistic regression models, we assessed the association of serum insulin and glucose levels (per s.d. and in tertiles) with the different plaque components, while adjusting for sex, age, intima-media thickness, and cardiovascular risk factors. RESULTS Serum insulin levels were associated with the presence of intraplaque hemorrhage (adjusted odds ratio (OR): 1.42 (95% CI: 1.12-1.7)) We found no association with the presence of calcification or lipid core. Sensitivity analyses restricted to individuals without diabetes mellitus yielded similar results. No associations were found between serum glucose levels and any of the plaque components. CONCLUSIONS Serum insulin levels are associated with the presence of vulnerable components of carotid plaque, specifically with intraplaque hemorrhage. These findings suggest a complex role for serum insulin in the pathophysiology of carotid atherosclerosis and in plaque vulnerability.
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Affiliation(s)
- Blerim Mujaj
- Departments of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
- Department of Cardiovascular Sciences, Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, University of Leuven, Leuven, Belgium
| | - Daniel Bos
- Departments of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
- Department of Clinical Epidemiology, Harvard TH Chan School of Public Health, Boston, Massachusetts, USA
- Correspondence should be addressed to D Bos;
| | - Maryam Kavousi
- Departments of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - Aad van der Lugt
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Jan A Staessen
- Department of Cardiovascular Sciences, Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, University of Leuven, Leuven, Belgium
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Oscar H Franco
- Departments of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
| | - Meike W Vernooij
- Departments of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
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Girish A, Sekhon U, Sen Gupta A. Bioinspired artificial platelets for transfusion applications in traumatic hemorrhage. Transfusion 2020; 60:229-231. [PMID: 31625169 PMCID: PMC7004867 DOI: 10.1111/trf.15543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 09/16/2019] [Indexed: 12/15/2022]
Abstract
Among blood components, platelets (PLTs) present the toughest logistic challenges in transfusion due to limited availability, difficult portability and storage, high contamination risks, and very short shelf life (approx. 5 days). Robust research efforts are being directed to develop biologic PLTs in vitro as well as design biosynthetic and artificial PLT technologies that can potentially resolve these challenges to allow adequate availability and timely transfusion to improve survival in trauma.
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Affiliation(s)
- Aditya Girish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Ujjal Sekhon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
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Chen X, Li S, Yan Y, Su J, Wang D, Zhao J, Wang S, Zhang X. Absorbable nanocomposites composed of mesoporous bioglass nanoparticles and polyelectrolyte complexes for surgical hemorrhage control. Mater Sci Eng C Mater Biol Appl 2019; 109:110556. [PMID: 32228979 DOI: 10.1016/j.msec.2019.110556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 11/04/2019] [Accepted: 12/12/2019] [Indexed: 01/24/2023]
Abstract
Absorbable polyelectrolyte complexes-based hemostats are promising for controlling hemorrhage in iatrogenic injuries during surgery, whereas their hemostatic efficacy and other performances require further improvement for clinical application. Herein, spherical mesoporous bioglass nanoparticles (mBGN) were fabricated, and mBGN-polyelectrolyte complexes (composed of carboxymethyl starch and chitosan oligosaccharide) nanocomposites (BGN/PEC) with different mBGN contents were prepared via in situ coprecipitation followed by lyophilization. The effect of various mBGN content (10 and 20 wt%) on morphology, zeta potential, water absorption, degradation behavior and ion release were systematically evaluated. The in vitro degradability was dramatically promoted and a more neutral environment was achieved with the incorporation of mBGN, which is preferable for surgical applications. The in vitro coagulation test with whole blood demonstrated that the incorporation of mBGN facilitated blood clotting process. The plasma coagulation evaluation indicated that BGN/PEC had increased capability to accelerate coagulation cascade via the intrinsic pathway than that of the PEC, while have inapparent influence on the extrinsic and common pathway. The in vivo hemostatic evaluation in a rabbit hepatic hemorrhage model revealed that BGN/PEC with 10 wt% mBGN (10BGN/PEC) treatment group had the lowest blood loss, although its hemostatic time is close to that of 20BGN/PEC treatment group. The cytocompatibility evaluation with MC3T3-L1 fibroblasts indicated that 10BGN/PEC induced a ~25% increase of cell viability compared to the PEC at days 4 and 7, indicating improved biocompatibility. These findings support the promising application of absorbable BGN/PEC with optimized mBGN content as internal hemostats and present a platform for further development of PEC-based hemostats.
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Affiliation(s)
- Xingtao Chen
- Department of Orthopaedics, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Shuyang Li
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China
| | - Yonggang Yan
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Jiacan Su
- Department of Orthopaedics Trauma, Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
| | - Dongliang Wang
- Shanghai Jiao Tong Univ, Sch Med, Xinhua Hosp, Dept Orthoped Surg, 1665 Kongjiang Rd, Shanghai 200092, PR China
| | - Jun Zhao
- Shanghai Jiao Tong Univ, Shanghai Peoples Hosp, 9, Dept Orthodont, Sch Med, Shanghai, China
| | - Sicheng Wang
- Department of Orthopaedics, Zhongye Hospital, Shanghai 200941, China
| | - Xin Zhang
- Department of Orthopaedics, Zhongye Hospital, Shanghai 200941, China
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Abstract
Factor VII (FVII) deficiency is the most common of the Rare Inherited Coagulation Disorders. The inheritance is autosomal recessive but there is variable penetrance. Overall there is poor correlation between the FVII level and the bleeding phenotype. Heterozygotes may have significant bleeding and severe homozygotes, or compound heterozygotes can be asymptomatic. Typically, homozygotes have FVII levels <10% and heterozygotes have levels above that. In most cases bleeding is uncommon with FVII levels>10-20%. A personal and family history is essential to determine the bleeding risk and to plan for surgical and obstetrical prophylaxis. Severe bleeding complications including central nervous system bleeding, gastrointestinal system bleeding and bleeding into the joints occurs in 10-15% of FVII deficient patients. Mucocutaneous bleeding is a common symptom but 30% of patients are asymptomatic. Fifty to 69% of women have heavy menstrual bleeding. Due to the limited number of publications regarding this rare disorder there are no consensus guidelines. There is registry data which has led to the best recommendations for treatment of bleeding episodes, initiation of long-term prophylaxis in addition to surgical plus ante and peripartum prophylaxis. Recombinant FVII concentrate is the best replacement therapy and a review of treatment and prophylaxis dosing is discussed.
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Affiliation(s)
- K Sue Robinson
- Division of Hematology, Dalhousie University, Queen Elizabeth II Health Sciences Centre, Department of Medicine, Rm. 416, 4th Floor Bethune Bldg, 1276 South Park St., Halifax, NS, B3H 2Y9, Canada.
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35
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Tani N, Ikeda T, Aoki Y, Shida A, Oritani S, Ishikawa T. Pathophysiological significance of clock genes BMAL1 and PER2 as erythropoietin-controlling factors in acute blood hemorrhage. Hum Cell 2019; 32:275-284. [PMID: 30941700 DOI: 10.1007/s13577-019-00248-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 03/13/2019] [Indexed: 12/18/2022]
Abstract
This study aimed to characterize the pathophysiology, including possible correlations, of clock gene expression and erythropoietin (EPO) production in the acute stage of blood hemorrhage. Specimens of human cortical tissues (right and left kidneys) and cardiac blood were collected at autopsy from 52 cases following mortality due to acute-stage blood hemorrhage following sharp instrument injury. BMAL1 and PER2 mRNA levels were determined by reverse transcription-polymerase chain reaction; BMAL1 and PER2 protein levels were assessed using immunohistochemistry; BMAL1 protein levels were quantitatively measured by western blotting; and serum EPO levels were measured by chemiluminescent enzyme immunoassay. Separately, a rat model of hemorrhagic conditions was generated and used to confirm the results obtained with autopsy-derived specimens. A positive correlation was observed between BMAL1 protein and serum EPO levels, but not between BMAL1 mRNA levels and serum EPO levels. We also noted that Per2 mRNA expression became elevated in humans who survived for > 3 h after acute hemorrhagic events, with subsequent decreases in serum EPO levels. The rat model showed that even short (30-min) intervals of blood loss yielded increases in both Bmal1 mRNA and serum EPO levels; longer (60-min) intervals resulted in increases in Per2 mRNA expression along with decreases in serum EPO. Thus, the acute-stage human hemorrhage cases and the rat hemorrhage model yielded similar tendencies for clock gene expression and EPO secretion. In conclusion, our results indicated that clock genes are involved in the regulation of EPO production during the early stages of hypoxia/ischemia resulting from the acute hemorrhagic events.
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Affiliation(s)
- Naoto Tani
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan.
- Forensic Autopsy Section, Medico-Legal Consultation and Postmortem Investigation Support Center (MLCPI-SC), Osaka, Japan.
| | - Tomoya Ikeda
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan
- Forensic Autopsy Section, Medico-Legal Consultation and Postmortem Investigation Support Center (MLCPI-SC), Osaka, Japan
| | - Yayoi Aoki
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan
| | - Alissa Shida
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan
| | - Shigeki Oritani
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan
| | - Takaki Ishikawa
- Department of Legal Medicine, Osaka City University Medical School, Asahi-Machi 1-4-3, Abeno, Osaka, 545-8585, Japan
- Forensic Autopsy Section, Medico-Legal Consultation and Postmortem Investigation Support Center (MLCPI-SC), Osaka, Japan
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Chao CH, Wu WC, Lai YC, Tsai PJ, Perng GC, Lin YS, Yeh TM. Dengue virus nonstructural protein 1 activates platelets via Toll-like receptor 4, leading to thrombocytopenia and hemorrhage. PLoS Pathog 2019; 15:e1007625. [PMID: 31009511 PMCID: PMC6497319 DOI: 10.1371/journal.ppat.1007625] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 05/02/2019] [Accepted: 02/07/2019] [Indexed: 12/12/2022] Open
Abstract
Dengue virus (DENV) infection, the most common mosquito-transmitted viral infection, can cause a range of diseases from self-limiting dengue fever to life-threatening dengue hemorrhagic fever and shock syndrome. Thrombocytopenia is a major characteristic observed in both mild and severe dengue disease and is significantly correlated with the progression of dengue severity. Previous studies have shown that DENV nonstructural protein 1 (NS1), which can be secreted into patients’ blood, can stimulate immune cells via Toll-like receptor 4 (TLR4) and can cause endothelial leakage. However, it is unclear whether DENV NS1 can directly induce platelet activation or cause thrombocytopenia during DENV infection. In this study, we first demonstrated that DENV but not Zika virus cell culture supernatant could induce P-selectin expression and phosphatidylserine (PS) exposure in human platelets, both of which were abolished when NS1 was depleted from the DENV supernatant. Similar results were found using recombinant NS1 from all four serotypes of DENV, and those effects were blocked in the presence of anti-NS1 F(ab’)2, anti-TLR4 antibody, a TLR4 antagonist (Rhodobacter sphaeroides lipopolysaccharide, LPS-Rs) and a TLR4 signaling inhibitor (TAK242), but not polymyxin B (an LPS inhibitor). Moreover, the activation of platelets by DENV NS1 promoted subthreshold concentrations of adenosine diphosphate (ADP)-induced platelet aggregation and enhanced platelet adhesion to endothelial cells and phagocytosis by macrophages. Finally, we demonstrated that DENV-induced thrombocytopenia and hemorrhage were attenuated in TLR4 knockout and wild-type mice when NS1 was depleted from DENV supernatant. Taken together, these results suggest that the binding of DENV NS1 to TLR4 on platelets can trigger its activation, which may contribute to thrombocytopenia and hemorrhage during dengue infection. Over the past 50 years, dengue has been a continuing global threat, with no effective vaccine or specific antiviral drug. Dengue infection causes a wide range of outcomes, from fever-like symptoms to severe dengue hemorrhagic fever. Thrombocytopenia, a reduction in platelet count, is a common feature observed in both mild and severe dengue and is correlated with disease severity. In this study, we used dengue viral supernatant or DENV recombinant NS1 protein to stimulate human-isolated platelets. We found that DENV NS1 could directly activate platelets through TLR4 and could further enhance platelet aggregation, adhesion to endothelial cells and phagocytosis by macrophages, which could lead to thrombocytopenia. We also proved that both NS1 and TLR4 are critical for DENV-induced thrombocytopenia and hemorrhage using a DENV-induced hemorrhagic mouse model. Our study reveals a new pathogenic role of NS1 during dengue infection and highlights that NS1 should be a topic of attention in the development of therapeutic drugs and vaccines against dengue infection.
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Affiliation(s)
- Chiao-Hsuan Chao
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Chueh Wu
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen-Chung Lai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei-Jane Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Guey-Chuen Perng
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yee-Shin Lin
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Trai-Ming Yeh
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- * E-mail:
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Motoi S, Toyoda H, Obara T, Ohta E, Arita Y, Negishi K, Moriya K, Kuboi Y, Soejima M, Imai T, Ido A, Tsubouchi H, Kawano T. Anti-Apoptotic Effects of Recombinant Human Hepatocyte Growth Factor on Hepatocytes Were Associated with Intrahepatic Hemorrhage Suppression Indicated by the Preservation of Prothrombin Time. Int J Mol Sci 2019; 20:ijms20081821. [PMID: 31013780 PMCID: PMC6514566 DOI: 10.3390/ijms20081821] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 11/16/2022] Open
Abstract
Hepatocyte growth factor (HGF) is an endogenously expressed bioactive substance that has a strong anti-apoptotic effect. In this study, we biochemically and histologically characterized the effects of rh-HGF on in vitro human hepatocyte injury and mouse acute liver failure (ALF) models, both of which were induced by antibody-mediated Fas signaling. rh-HGF inhibited intracellular caspase-3/7 activation and cytokeratin 18 (CK-18) fragment release in both models. Histologically, rh-HGF dramatically suppressed parenchymal damage and intrahepatic hemorrhage. Among the laboratory parameters, prothrombin time (PT) was strongly preserved by rh-HGF, and PT was well correlated with the degree of intrahepatic hemorrhage. These results showed that the anti-apoptotic effect of rh-HGF on hepatocytes coincided strikingly with the suppression of intrahepatic hemorrhage. PT was considered to be the best parameter that correlated with the intrahepatic hemorrhages associated with hepatocellular damage. The action of rh-HGF might derive not only from its anti-apoptosis effects on liver parenchymal cells but also from its stabilization of structural and vasculature integrity.
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Affiliation(s)
- Sotaro Motoi
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Hiroko Toyoda
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Takashi Obara
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Etsuko Ohta
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Yoshihisa Arita
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Kana Negishi
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Katsuhiro Moriya
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Yoshikazu Kuboi
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Motohiro Soejima
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Toshio Imai
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Akio Ido
- Digestive and Lifestyle Diseases, Department of Human and Environmental Sciences, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan.
- Department of HGF Tissue Repair and Regenerative Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan.
| | - Hirohito Tsubouchi
- Department of Gastroenterology and Hepatology, Kagoshima City Hospital, 37-1 Uearata-cho, Kagoshima 8908760, Japan.
| | - Tetsu Kawano
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
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Rubinstein I, van Breemen R, Nosal DG, Weinberg G, Hershow RC, Feinstein DL. Should Cytochrome P450 Inducers be Used to Accelerate Clearance of Brodifacoum from Poisoned Patients? Drugs R D 2019; 19:67-71. [PMID: 30689138 PMCID: PMC6380967 DOI: 10.1007/s40268-019-0261-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A recent multi-state outbreak of life-threatening bleeding following inhalation of synthetic cannabinoids has been attributed to contamination with the long-acting anticoagulant rodenticide (LAAR) brodifacoum, a second-generation, highly potent, long-acting derivative of the commonly used blood thinner warfarin. While long-term treatment with high-dose vitamin K1 restores coagulation, it does not affect brodifacoum metabolism or clearance, and, consequently, brodifacoum remains in the human body for several months, thereby predisposing to risk of bleeding recurrence and development of coagulation-independent injury in extrahepatic tissues and fetuses. This has prompted the evaluation of pharmacological measures that accelerate brodifacoum clearance from poisoned patients. Since the induction of certain cytochrome P450 (CYP) enzymes accelerates warfarin metabolism, using CYP inducers, such as phenobarbital, to accelerate brodifacoum clearance seems plausible. However, unlike warfarin, brodifacoum does not undergo significant metabolism in the liver, nor have the effects of phenobarbital on vitamin K1 metabolism been previously determined. In addition, the safety of phenobarbital in brodifacoum-poisoned patients has not been established. Therefore, we propose that CYP inducers should not be used to accelerate the clearance of brodifacoum from poisoned patients, but that alternative approaches such as reducing enterohepatic recirculation of brodifacoum, or using lipid emulsions to scavenge brodifacoum throughout the body, be considered.
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Affiliation(s)
- Israel Rubinstein
- University of Illinois, 835 South Wolcott Ave, MC513, E720, Chicago, IL, 60612, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | | | - Daniel G Nosal
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Guy Weinberg
- University of Illinois, 835 South Wolcott Ave, MC513, E720, Chicago, IL, 60612, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Ronald C Hershow
- University of Illinois, 835 South Wolcott Ave, MC513, E720, Chicago, IL, 60612, USA
| | - Douglas L Feinstein
- University of Illinois, 835 South Wolcott Ave, MC513, E720, Chicago, IL, 60612, USA.
- Jesse Brown VA Medical Center, Chicago, IL, USA.
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Buscarini E, Botella LM, Geisthoff U, Kjeldsen AD, Mager HJ, Pagella F, Suppressa P, Zarrabeitia R, Dupuis-Girod S, Shovlin CL. Safety of thalidomide and bevacizumab in patients with hereditary hemorrhagic telangiectasia. Orphanet J Rare Dis 2019; 14:28. [PMID: 30717761 PMCID: PMC6360670 DOI: 10.1186/s13023-018-0982-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/14/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Hereditary hemorrhagic telangiectasia (HHT) is a multisystemic inherited vascular dysplasia that leads to nosebleeds and visceral arteriovenous malformations (AVMs). Anti-angiogenic drugs thalidomide and bevacizumab have been increasingly used off-label with variable results. The HHT working group within the ERN for Rare Multisystemic Vascular Diseases (VASCERN), developed a questionnaire-based retrospective capture of adverse events (AEs) classified using the Common Terminology Criteria for Adverse Events. RESULTS Sixty-nine HHT patients received bevacizumab, 37 (50.6%) for high output cardiac failure/hepatic AVMs, and 32 (49.4%) for bleeding; the 69 patients received bevacizumab for a mean of 11 months for a total of 63.8 person/years treatment. 67 received thalidomide, all for epistaxis and/or gastrointestinal bleeding; they received thalidomide for a mean of 13.4 months/patient for a total of 75 person/years treatment. AEs were reported in 58 patients, 33 with bevacizumab, 37 with thalidomide. 32 grade 1-3 AEs related to bevacizumab were reported with an average incidence rate of 50 per 100 person-years. 34 grade 1-3 AEs related to thalidomide were reported with an average incidence rate of 45.3 per 100 person-years. Bevacizumab AEs were more common in females (27 AEs in 46 women) than males (6 in 23, p < 0.001). Thalidomide AEs occurred at more similar rates in males (25 AEs in 41 men, 60.9%) and females (12 in 26 (46.2%), but were more common in ENG patients (17 in 17) than in ACVRL1 (14 in 34, p < 0.0001). For bevacizumab, the most common reports were of joint pains (7/69, 10%), headache (3/69, 4.4%) and proteinuria (2/69, 3%), and for thalidomide, peripheral neuropathy (12/67, 18%); drowsiness (8/67, 12%); and dizziness (6/67, 9%). Fatal adverse events were more common in males (p = 0.009), and in patients with ENG pathogenic variants (p = 0.012). One fatal AE was possibly related to bevacizumab (average incidence rate: 1.5 per 100 person-years); 3 fatal AEs were possibly related to thalidomide (average incidence rate: 4 per 100 person-years). CONCLUSIONS With potential increase in use of Bevacizumab and Thalidomide in HHT patients, data presented support appropriate weighing of the toxicities which can arise in HHT settings and the practice recommendations for their prevention and management.
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Affiliation(s)
| | - Luisa Maria Botella
- Department of Cell and Molecular Medicine Centro de Investigaciones Biológicas, CSIC, U707 CIBERER, Madrid, Spain
| | - Urban Geisthoff
- VASCERN HHT Reference Center, Essen University Hospital, Department of Otorhinolaryngology, University of Duisburg-Essen, Essen, Germany
| | - Anette D. Kjeldsen
- VASCERN HHT Reference Center, Odense Universitetshospital, Syddansk Universitet, Odense, Denmark
| | - Hans Jurgen Mager
- VASCERN HHT Reference Center, St Antonius Ziekenhuis, Nieuwegein, Netherlands
| | - Fabio Pagella
- VASCERN HHT Reference Center, Unità Operativa Complessa di Otorinolaringoiatria, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Patrizia Suppressa
- VASCERN HHT Reference Center, Centro sovraziendale Malattie rare, “Frugoni” Internal Medicine Unit, University of Bari “A. Moro”, Bari, Italy
| | | | - Sophie Dupuis-Girod
- VASCERN HHT Reference Center, Genetic department, Hospices Civils de Lyon, Femme-Mère-Enfants Hospital, F-69677 Bron, France
| | - Claire L. Shovlin
- VASCERN HHT Reference Center, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, and Vascular Sciences, National Heart and Lung Institute, Imperial College London, London, UK
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40
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Bromberger T, Klapproth S, Rohwedder I, Zhu L, Mittmann L, Reichel CA, Sperandio M, Qin J, Moser M. Direct Rap1/Talin1 interaction regulates platelet and neutrophil integrin activity in mice. Blood 2018; 132:2754-2762. [PMID: 30442677 PMCID: PMC6307989 DOI: 10.1182/blood-2018-04-846766] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 11/08/2018] [Indexed: 12/27/2022] Open
Abstract
Targeting Talin1 to the plasma membrane is a crucial step in integrin activation, which in leukocytes is mediated by a Rap1/RIAM/Talin1 pathway, whereas in platelets, it is RIAM independent. Recent structural, biochemical, and cell biological studies have suggested direct Rap1/Talin1 interaction as an alternative mechanism to recruit Talin1 to the membrane and induce integrin activation. To test whether this pathway is of relevance in vivo, we generated Rap1 binding-deficient Talin1 knockin (Tln13mut) mice. Although Tln13mut mice showed no obvious abnormalities, their platelets exhibited reduced integrin activation, aggregation, adhesion, and spreading, resulting in prolonged tail-bleeding times and delayed thrombus formation and vessel occlusion in vivo. Surprisingly, neutrophil adhesion to different integrin ligands and β2 integrin-dependent phagocytosis were also significantly impaired, which caused profound leukocyte adhesion and extravasation defects in Tln13mut mice. In contrast, macrophages exhibited no defect in adhesion or spreading despite reduced integrin activation. Taken together, our findings suggest that direct Rap1/Talin1 interaction is of particular importance in regulating the activity of different integrin classes expressed on platelets and neutrophils, which both depend on fast and dynamic integrin-mediated responses.
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Affiliation(s)
- Thomas Bromberger
- Department Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Sarah Klapproth
- Department Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Ina Rohwedder
- Walter Brendel Centre of Experimental Medicine, Klinikum der Universität Munich, Ludwig Maximilians University Munich, Martinsried, Germany
| | - Liang Zhu
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - Laura Mittmann
- Walter Brendel Centre of Experimental Medicine, Klinikum der Universität Munich, Ludwig Maximilians University Munich, Martinsried, Germany
- Department of Otorhinolarynology, Ludwig Maximilians University Munich, Munich, Germany; and
| | - Christoph A Reichel
- Walter Brendel Centre of Experimental Medicine, Klinikum der Universität Munich, Ludwig Maximilians University Munich, Martinsried, Germany
- Department of Otorhinolarynology, Ludwig Maximilians University Munich, Munich, Germany; and
| | - Markus Sperandio
- Walter Brendel Centre of Experimental Medicine, Klinikum der Universität Munich, Ludwig Maximilians University Munich, Martinsried, Germany
- German Centre for Cardiovascular Research, Munich Heart Alliance, Munich, Germany
| | - Jun Qin
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - Markus Moser
- Department Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
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Baaten CCFMJ, Meacham S, de Witt SM, Feijge MAH, Adams DJ, Akkerman JWN, Cosemans JMEM, Grassi L, Jupe S, Kostadima M, Mattheij NJA, Prins MH, Ramirez-Solis R, Soehnlein O, Swieringa F, Weber C, White JK, Ouwehand WH, Heemskerk JWM. A synthesis approach of mouse studies to identify genes and proteins in arterial thrombosis and bleeding. Blood 2018; 132:e35-e46. [PMID: 30275110 PMCID: PMC6293874 DOI: 10.1182/blood-2018-02-831982] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 09/19/2018] [Indexed: 12/25/2022] Open
Abstract
Antithrombotic therapies reduce cardiovascular diseases by preventing arterial thrombosis and thromboembolism, but at expense of increased bleeding risks. Arterial thrombosis studies using genetically modified mice have been invaluable for identification of new molecular targets. Because of low sample sizes and heterogeneity in approaches or methodologies, a formal meta-analysis to compare studies of mice with single-gene defects encountered major limitations. To overcome these, we developed a novel synthesis approach to quantitatively scale 1514 published studies of arterial thrombus formation (in vivo and in vitro), thromboembolism, and tail-bleeding of genetically modified mice. Using a newly defined consistency parameter (CP), indicating the strength of published data, comparisons were made of 431 mouse genes, of which 17 consistently contributed to thrombus formation without affecting hemostasis. Ranking analysis indicated high correlations between collagen-dependent thrombosis models in vivo (FeCl3 injury or ligation/compression) and in vitro. Integration of scores and CP values resulted in a network of protein interactions in thrombosis and hemostasis (PITH), which was combined with databases of genetically linked human bleeding and thrombotic disorders. The network contained 2946 nodes linked to modifying genes of thrombus formation, mostly with expression in megakaryocytes. Reactome pathway analysis and network characteristics revealed multiple novel genes with potential contribution to thrombosis/hemostasis. Studies with additional knockout mice revealed that 4 of 8 (Apoe, Fpr2, Ifnar1, Vps13a) new genes were modifying in thrombus formation. The PITH network further: (i) revealed a high similarity of murine and human hemostatic and thrombotic processes and (ii) identified multiple new candidate proteins regulating these processes.
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Affiliation(s)
- Constance C F M J Baaten
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
- Institute for Molecular Cardiovascular Research (IMCAR), University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Stuart Meacham
- Department of Haematology, University of Cambridge and NHS Blood and Transplant, Cambridge, United Kingdom
| | - Susanne M de Witt
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Marion A H Feijge
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - David J Adams
- Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Jan-Willem N Akkerman
- Laboratory of Clinical Chemistry and Haematology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Judith M E M Cosemans
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Luigi Grassi
- Department of Haematology, University of Cambridge and NHS Blood and Transplant, Cambridge, United Kingdom
| | - Steve Jupe
- EMBL-European Bioinformatics Institute, Cambridge, United Kingdom
| | - Myrto Kostadima
- Department of Haematology, University of Cambridge and NHS Blood and Transplant, Cambridge, United Kingdom
| | - Nadine J A Mattheij
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Martin H Prins
- Department of Clinical Epidemiology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | | | - Oliver Soehnlein
- Institute for Cardiovascular Prevention (IPEK), Ludwig Maximilians University, Munich, Germany
- DZHK, Partner Site Munich Heart Alliance, Munich, Germany; and
- Department of Pathology, AMC, Amsterdam, The Netherlands
| | - Frauke Swieringa
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), Ludwig Maximilians University, Munich, Germany
- DZHK, Partner Site Munich Heart Alliance, Munich, Germany; and
| | | | - Willem H Ouwehand
- Department of Haematology, University of Cambridge and NHS Blood and Transplant, Cambridge, United Kingdom
- Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom
| | - Johan W M Heemskerk
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
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Kenchegowda D, Legesse B, Hritzo B, Olsen C, Aghdam S, Kaur A, Culp W, Derrien-Colemyn A, Severson G, Moroni M. Selective Insulin-like Growth Factor Resistance Associated with Heart Hemorrhages and Poor Prognosis in a Novel Preclinical Model of the Hematopoietic Acute Radiation Syndrome. Radiat Res 2018; 190:164-175. [PMID: 29809108 PMCID: PMC6118398 DOI: 10.1667/rr14993.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although bone marrow aplasia has been considered for the past decades as the major contributor of radiation-induced blood disorders, cytopenias alone are insufficient to explain differences in the prevalence of bleeding. In this study, the minipig was used as a novel preclinical model of hematopoietic acute radiation syndrome to assess if factors other than platelet counts correlated with bleeding and survival. We sought to determine whether radiation affected the insulin-like growth factor-1 (IGF-1) pathway, a growth hormone with cardiovascular and radioprotective features. Gottingen and Sinclair minipigs were exposed to ionizing radiation at hematopoietic doses. The smaller Gottingen minipig strain was more sensitive to radiation; differences in IGF-1 levels were minimal, suggesting that increased sensitivity could depend on weak response to the hormone. Radiation caused IGF-1 selective resistance by inhibiting the anti-inflammatory anti-oxidative stress IRS/PI3K/Akt but not the pro-inflammatory MAPK kinase pathway, shifting IGF-1 signaling towards a pro-oxidant, pro-inflammatory environment. Selective IGF-1 resistance associated with hemorrhages in the heart, poor prognosis, increase in C-reactive protein and NADPH oxidase 2, uncoupling of endothelial nitric oxide synthase, inhibition of nitric oxide (NO) synthesis and imbalance between the vasodilator NO and the vasoconstrictor endothelin-1 molecules. Selective IGF-1 resistance is a novel mechanism of radiation injury, associated with a vicious cycle amplifying reactive oxygen species-induced damage, inflammation and endothelial dysfunction. In the presence of thrombocytopenia, selective inhibition of IGF-1 cardioprotective function may contribute to the development of hemostatic disorders. This finding may be particularly relevant for individuals with low IGF-1 activity, such as the elderly or those with cardiometabolic dysfunctions.
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Affiliation(s)
- Doreswamy Kenchegowda
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Betre Legesse
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Bernadette Hritzo
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Cara Olsen
- Biostatistics Consulting Center, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Saeed Aghdam
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Amandeep Kaur
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - William Culp
- Office of the Vice President for Research, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | | | - Grant Severson
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Maria Moroni
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
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Fathi P, Sikorski M, Christodoulides K, Langan K, Choi YS, Titcomb M, Ghodasara A, Wonodi O, Thaker H, Vural M, Behrens A, Kofinas P. Zeolite-loaded alginate-chitosan hydrogel beads as a topical hemostat. J Biomed Mater Res B Appl Biomater 2018; 106:1662-1671. [PMID: 28842967 PMCID: PMC5826813 DOI: 10.1002/jbm.b.33969] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 07/21/2017] [Accepted: 07/29/2017] [Indexed: 11/06/2022]
Abstract
Hemorrhage is the leading cause of preventable death after a traumatic injury, and the largest contributor to loss of productive years of life. Hemostatic agents accelerate hemostasis and help control hemorrhage by concentrating coagulation factors, acting as procoagulants and/or interacting with erythrocytes and platelets. Hydrogel composites offer a platform for targeting both mechanical and biological hemostatic mechanisms. The goal of this work was to develop hydrogel particles composed of chitosan, alginate, and zeolite, and to assess their potential to promote blood coagulation via multiple mechanisms: erythrocyte adhesion, factor concentration, and the ability to serve as a mechanical barrier to blood loss. Several particle compositions were synthesized and characterized. Hydrogel bead composition was optimized to achieve the highest swelling capacity, greatest erythrocyte adhesion, and minimal in vitro cytotoxicity. These results suggest a polymer hydrogel-aluminosilicate composite material may serve as a platform for an effective hemostatic agent that incorporates multiple mechanisms of action. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1662-1671, 2018.
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Affiliation(s)
- Parinaz Fathi
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Michael Sikorski
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742
| | | | - Kristen Langan
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Yoon Sun Choi
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Michael Titcomb
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Anjali Ghodasara
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Omasiri Wonodi
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Hemi Thaker
- Gemstone Honors Program, University of Maryland, College Park, Maryland 20742
| | - Mert Vural
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
| | - Adam Behrens
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742
| | - Peter Kofinas
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
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44
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Pant A, Kopec AK, Baker KS, Cline-Fedewa H, Lawrence DA, Luyendyk JP. Plasminogen Activator Inhibitor-1 Reduces Tissue-Type Plasminogen Activator-Dependent Fibrinolysis and Intrahepatic Hemorrhage in Experimental Acetaminophen Overdose. Am J Pathol 2018; 188:1204-1212. [PMID: 29454747 PMCID: PMC5911680 DOI: 10.1016/j.ajpath.2018.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/21/2017] [Accepted: 01/11/2018] [Indexed: 12/16/2022]
Abstract
Acetaminophen (APAP)-induced liver injury in mice is associated with activation of the coagulation cascade and deposition of fibrin in liver. Plasminogen activator inhibitor-1 (PAI-1) is an important physiological inhibitor of tissue-type plasminogen activator (tPA) and plays a critical role in fibrinolysis. PAI-1 expression is increased in both experimental APAP-induced liver injury and patients with acute liver failure. Prior studies have shown that PAI-1 prevents intrahepatic hemorrhage and mortality after APAP challenge, but the downstream mechanisms are not clear. We tested the hypothesis that PAI-1 limits liver-related morbidity after APAP challenge by reducing tPA-dependent fibrinolysis. Compared with APAP-challenged (300 mg/kg) wild-type mice, hepatic deposition of cross-linked fibrin was reduced, with intrahepatic congestion and hemorrhage increased in PAI-1-deficient mice 24 hours after APAP overdose. Administration of recombinant wild-type human PAI-1 reduced intrahepatic hemorrhage 24 hours after APAP challenge in PAI-1-/- mice, whereas a mutant PAI-1 lacking antiprotease function had no effect. Of interest, tPA deficiency alone did not affect APAP-induced liver damage. In contrast, fibrinolysis, intrahepatic congestion and hemorrhage, and mortality driven by PAI-1 deficiency were reduced in APAP-treated tPA-/-/PAI-1-/- double-knockout mice. The results identify PAI-1 as a critical regulator of intrahepatic fibrinolysis in experimental liver injury. Moreover, the results suggest that the balance between PAI-1 and tPA activity is an important determinant of liver pathology after APAP overdose.
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Affiliation(s)
- Asmita Pant
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan; Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan
| | - Anna K Kopec
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan; Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan
| | - Kevin S Baker
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan; Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan
| | - Holly Cline-Fedewa
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan
| | - Daniel A Lawrence
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | - James P Luyendyk
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan; Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan; Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan.
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45
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Plow EF, Wang Y, Simon DI. The search for new antithrombotic mechanisms and therapies that may spare hemostasis. Blood 2018; 131:1899-1902. [PMID: 29467183 PMCID: PMC5921961 DOI: 10.1182/blood-2017-10-784074] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/13/2018] [Indexed: 12/20/2022] Open
Abstract
Current antithrombotic drugs, including widely used antiplatelet agents and anticoagulants, are associated with significant bleeding risk. Emerging experimental evidence suggests that the molecular and cellular mechanisms of hemostasis and thrombosis can be separated, thereby increasing the possibility of new antithrombotic therapeutic targets with reduced bleeding risk. We review new coagulation and platelet targets and highlight the interaction between integrin αMβ2 (Mac-1, CD11b/CD18) on leukocytes and GPIbα on platelets that seems to distinguish thrombosis from hemostasis.
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Affiliation(s)
| | - Yunmei Wang
- Harrington Heart & Vascular Institute, University Hospitals Cleveland Medical Center, Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH
| | - Daniel I Simon
- Harrington Heart & Vascular Institute, University Hospitals Cleveland Medical Center, Case Cardiovascular Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH
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Prince R, Bologna L, Manetti M, Melchiorre D, Rosa I, Dewarrat N, Suardi S, Amini P, Fernández JA, Burnier L, Quarroz C, Reina Caro MD, Matsumura Y, Kremer Hovinga JA, Griffin JH, Simon HU, Ibba-Manneschi L, Saller F, Calzavarini S, Angelillo-Scherrer A. Targeting anticoagulant protein S to improve hemostasis in hemophilia. Blood 2018; 131:1360-1371. [PMID: 29317453 PMCID: PMC5865230 DOI: 10.1182/blood-2017-09-800326] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 01/03/2018] [Indexed: 01/13/2023] Open
Abstract
Improved treatments are needed for hemophilia A and B, bleeding disorders affecting 400 000 people worldwide. We investigated whether targeting protein S could promote hemostasis in hemophilia by rebalancing coagulation. Protein S (PS) is an anticoagulant acting as cofactor for activated protein C and tissue factor pathway inhibitor (TFPI). This dual role makes PS a key regulator of thrombin generation. Here, we report that targeting PS rebalances coagulation in hemophilia. PS gene targeting in hemophilic mice protected them against bleeding, especially when intra-articular. Mechanistically, these mice displayed increased thrombin generation, resistance to activated protein C and TFPI, and improved fibrin network. Blocking PS in plasma of hemophilia patients normalized in vitro thrombin generation. Both PS and TFPIα were detected in hemophilic mice joints. PS and TFPI expression was stronger in the joints of hemophilia A patients than in those of hemophilia B patients when receiving on-demand therapy, for example, during a bleeding episode. In contrast, PS and TFPI expression was decreased in hemophilia A patients receiving prophylaxis with coagulation factor concentrates, comparable to osteoarthritis patients. These results establish PS inhibition as both controller of coagulation and potential therapeutic target in hemophilia. The murine PS silencing RNA approach that we successfully used in hemophilic mice might constitute a new therapeutic concept for hemophilic patients.
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Affiliation(s)
- Raja Prince
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Luca Bologna
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Mirko Manetti
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, and
| | - Daniela Melchiorre
- Department of Experimental and Clinical Medicine, Section of Internal Medicine, Rheumatology Unit, Careggi University Hospital, University of Florence, Florence, Italy
| | - Irene Rosa
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, and
| | - Natacha Dewarrat
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Silvia Suardi
- Vetsuisse, Institute of Animal Pathology, Comparative Pathology Platform, and
| | - Poorya Amini
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - José A Fernández
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA
| | - Laurent Burnier
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA
| | - Claudia Quarroz
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Maria Desiré Reina Caro
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Yasuhiro Matsumura
- Division of Developmental Therapeutics, Research Centre for Innovative Oncology, National Cancer Centre Hospital East, Chiba, Japan; and
| | - Johanna A Kremer Hovinga
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - John H Griffin
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Lidia Ibba-Manneschi
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, and
| | - François Saller
- INSERM UMR-S 1176, Université Paris-Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Sara Calzavarini
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Anne Angelillo-Scherrer
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and
- Department of Clinical Research, University of Bern, Bern, Switzerland
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47
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Hickman DA, Pawlowski CL, Shevitz A, Luc NF, Kim A, Girish A, Marks J, Ganjoo S, Huang S, Niedoba E, Sekhon UDS, Sun M, Dyer M, Neal MD, Kashyap VS, Sen Gupta A. Intravenous synthetic platelet (SynthoPlate) nanoconstructs reduce bleeding and improve 'golden hour' survival in a porcine model of traumatic arterial hemorrhage. Sci Rep 2018; 8:3118. [PMID: 29449604 PMCID: PMC5814434 DOI: 10.1038/s41598-018-21384-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/02/2018] [Indexed: 12/14/2022] Open
Abstract
Traumatic non-compressible hemorrhage is a leading cause of civilian and military mortality and its treatment requires massive transfusion of blood components, especially platelets. However, in austere civilian and battlefield locations, access to platelets is highly challenging due to limited supply and portability, high risk of bacterial contamination and short shelf-life. To resolve this, we have developed an I.V.-administrable 'synthetic platelet' nanoconstruct (SynthoPlate), that can mimic and amplify body's natural hemostatic mechanisms specifically at the bleeding site while maintaining systemic safety. Previously we have reported the detailed biochemical and hemostatic characterization of SynthoPlate in a non-trauma tail-bleeding model in mice. Building on this, here we sought to evaluate the hemostatic ability of SynthoPlate in emergency administration within the 'golden hour' following traumatic hemorrhagic injury in the femoral artery, in a pig model. We first characterized the storage stability and post-sterilization biofunctionality of SynthoPlate in vitro. The nanoconstructs were then I.V.-administered to pigs and their systemic safety and biodistribution were characterized. Subsequently we demonstrated that, following femoral artery injury, bolus administration of SynthoPlate could reduce blood loss, stabilize blood pressure and significantly improve survival. Our results indicate substantial promise of SynthoPlate as a viable platelet surrogate for emergency management of traumatic bleeding.
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Affiliation(s)
- DaShawn A Hickman
- Department of Pathology, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Christa L Pawlowski
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Andrew Shevitz
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Norman F Luc
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Ann Kim
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Aditya Girish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Joyann Marks
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Simi Ganjoo
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Stephanie Huang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Edward Niedoba
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Ujjal D S Sekhon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Michael Sun
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Mitchell Dyer
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA
| | - Matthew D Neal
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA
| | - Vikram S Kashyap
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
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48
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Lee JJ, Lee MW, Kim TS, Song JW, Nam HS, Oh DJ, Oh WY, Yoo H, Park K, Kim JW. Intravascular Optical Molecular Imaging of a Macrophage Subset Within Intraplaque Hemorrhages. JACC Cardiovasc Imaging 2018; 11:371-372. [PMID: 29413444 DOI: 10.1016/j.jcmg.2017.11.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 11/06/2017] [Accepted: 11/07/2017] [Indexed: 01/30/2023]
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49
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Kjeld NG, Hua B, Karsdal MA, Sun S, Manon-Jensen T. The endothelial specific isoform of type XVIII collagen correlates to annual bleeding rate in haemophilia patients. PLoS One 2018; 13:e0190375. [PMID: 29320534 PMCID: PMC5761888 DOI: 10.1371/journal.pone.0190375] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 12/13/2017] [Indexed: 01/12/2023] Open
Abstract
Introduction The medical need in the haemophilic (HF) field to reduce bleeding incidents requires measurement of the annual bleeding rate (ABR) in haemophiliacs. Vascular rupture is associated with damage to the vascular endothelium causing exposure of the basement membrane. Endothelial cells and matrix impairment may be associated with joint bleeds and later development of HF arthropathy. Imbalanced extracellular matrix turnover is a central pathological feature in many diseases consequent to epithelial or endothelial cell damage. Type XVIII collagen is an essential basement membrane component, with an endothelial specific isoform. Aim To quantify the basement membrane specifically for the endothelial cells, as that may have particular relevance to endothelial cell stability and rupture in haemophiliacs. A newly developed ELISA assay detecting endothelial type XVIII collagen (COL-18N) was used to assess the clinical relevance of endothelial basement membrane turnover in patients diagnosed with HF arthropathy and correlation to ABR. Methods We developed an ELISA assay for quantification of COL-18N. Serum from 35 male HF patients was investigated using the COL-18N ELISA. Results COL-18N correlated to the ABR of haemophiliacs, r = 0.45, P<0.006. Conclusion Vascular rupture and consequent bleeding are associated with joint damage and deterioration of life quality in haemophiliacs. Quantification of ABR is an important part in efficacy assessment of different interventions, and the benchmark of these. Objective biomarkers reflecting endothelial dysfunction, vascular leaks and rupture, like the COL-18N biomarker that associate with ABR, may assist in identifying the most optimal treatment and monitoring of HF patients.
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Affiliation(s)
| | - Baolai Hua
- Department of Hematology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College (PUMC), Beijing, China
- Department of Hematology, Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | | | - Shu Sun
- Nordic Bioscience A/S, Herlev Hovedgade, Herlev, Denmark
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50
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Simurda T, Zolkova J, Snahnicanova Z, Loderer D, Skornova I, Sokol J, Hudecek J, Stasko J, Lasabova Z, Kubisz P. Identification of Two Novel Fibrinogen Bβ Chain Mutations in Two Slovak Families with Quantitative Fibrinogen Disorders. Int J Mol Sci 2017; 19:ijms19010100. [PMID: 29286337 PMCID: PMC5796050 DOI: 10.3390/ijms19010100] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/21/2017] [Accepted: 12/23/2017] [Indexed: 12/19/2022] Open
Abstract
Congenital fibrinogen disorders are caused by mutations in one of the three fibrinogen genes that affect the synthesis, assembly, intracellular processing, stability or secretion of fibrinogen. Functional studies of mutant Bβ-chains revealed the importance of individual residues as well as three-dimensional structures for fibrinogen assembly and secretion. This study describes two novel homozygous fibrinogen Bβ chain mutations in two Slovak families with afibrinogenemia and hypofibrinogenemia. Peripheral blood samples were collected from all subjects with the aim of identifying the causative mutation. Coagulation-related tests and rotational thromboelastometry were performed. All exons and exon–intron boundaries of the fibrinogen genes (FGA, FGB and FGG) were amplified by PCR followed by direct sequencing. Sequence analysis of the three fibrinogen genes allowed us to identify two novel homozygous mutations in the FGB gene. A novel Bβ chain truncation (BβGln180Stop) was detected in a 28-year-old afibrinogenemic man with bleeding episodes including repeated haemorrhaging into muscles, joints, and soft tissues, and mucocutaneous bleeding and a novel Bβ missense mutation (BβTyr368His) was found in a 62-year-old hypofibrinogenemic man with recurrent deep and superficial venous thromboses of the lower extremities. The novel missense mutation was confirmed by molecular modelling. Both studying the molecular anomalies and the modelling of fibrinogenic mutants help us to understand the extremely complex machinery of fibrinogen biosynthesis and finally better assess its correlation with the patient’s clinical course.
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Affiliation(s)
- Tomas Simurda
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Jana Zolkova
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Zuzana Snahnicanova
- Department of Molecular Biology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, BioMed Martin Mala Hora 4, Martin 036 01, Slovakia.
| | - Dusan Loderer
- Department of Molecular Biology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, BioMed Martin Mala Hora 4, Martin 036 01, Slovakia.
| | - Ingrid Skornova
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Juraj Sokol
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Jan Hudecek
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Jan Stasko
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
| | - Zora Lasabova
- Department of Molecular Biology, Comenius University in Bratislava, Jessenius Faculty of Medicine in Martin, BioMed Martin Mala Hora 4, Martin 036 01, Slovakia.
| | - Peter Kubisz
- National Centre of Haemostasis and Thrombosis, Department of Haematology and Transfusiology, Comenius University in Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Kollarova Str. N. 2, Martin 036 59, Slovakia.
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