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Frame D, Scappaticci GB, Braun TM, Maliarik M, Sisson TH, Pipe SW, Lawrence DA, Richardson PG, Holinstat M, Hyzy RC, Kaul DR, Gregg KS, Lama VN, Yanik GA. Defibrotide Therapy for SARS-CoV-2 ARDS. Chest 2022; 162:346-355. [PMID: 35413279 PMCID: PMC8993696 DOI: 10.1016/j.chest.2022.03.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/23/2022] [Accepted: 03/31/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND SARS-CoV-2-related ARDS is associated with endothelial dysfunction and profound dysregulation of the thrombotic-fibrinolytic pathway. Defibrotide is a polyanionic compound with fibrinolytic, antithrombotic, and antiinflammatory properties. RESEARCH QUESTION What is the safety and tolerability of defibrotide in patients with severe SARS-CoV-2 infections? STUDY DESIGN AND METHODS We report a prospective, open-label, single-center safety trial of defibrotide for the management of SARS-CoV-2-related ARDS. Eligible participants were 18 years of age or older with clinical and radiographic signs of ARDS, no signs of active bleeding, a serum D-dimer of more than twice upper limit of normal, and positive polymerase chain reaction-based results for SARS-CoV-2. Defibrotide (6.25 mg/kg/dose IV q6h) was administered for a planned 7-day course, with serum D-dimer levels and respiratory function monitored daily during therapy. RESULTS Twelve patients (median age, 63 years) were treated, with 10 patients receiving mechanical ventilation and 6 receiving vasopressor support at study entry. The median D-dimer was 3.25 μg/ml (range, 1.33-12.3) at study entry. The median duration of therapy was 7 days. No hemorrhagic or thrombotic complications occurred during therapy. No other adverse events attributable to defibrotide were noted. Four patients met the day 7 pulmonary response parameter, all four showing a decrease in serum D-dimer levels within the initial 72 h of defibrotide therapy. Three patients died of progressive pulmonary disease 11, 17, and 34 days after study entry. Nine patients (75%) remain alive 64 to 174 days after initiation of defibrotide. Day 30 all-cause mortality was 17% (95% CI, 0%-35%). All patients with a baseline Pao2 to Fio2 ratio of ≥ 125 mm Hg survived, whereas the three patients with a baseline Pao2 to Fio2 ratio of < 125 mm Hg died. INTERPRETATION The use of defibrotide for management of SARS-CoV-2-related ARDS proved safe and tolerable. No hemorrhagic or thrombotic complications were reported during therapy, with promising outcomes in a patient population with a historically high mortality rate. TRIAL REGISTRY ClinicalTrials.gov; No.: NCT04530604; URL: www. CLINICALTRIALS gov.
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Affiliation(s)
- David Frame
- Blood and Marrow Transplant Program, Michigan Medicine, Ann Arbor, MI,Department of Clinical Pharmacy, Michigan Medicine, Ann Arbor, MI
| | - Gianni B. Scappaticci
- Blood and Marrow Transplant Program, Michigan Medicine, Ann Arbor, MI,Department of Clinical Pharmacy, Michigan Medicine, Ann Arbor, MI
| | - Thomas M. Braun
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI
| | - Mary Maliarik
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Thomas H. Sisson
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Steven W. Pipe
- Division of Pediatric Hematology-Oncology, Department of Pediatrics, Michigan Medicine, Ann Arbor, MI
| | - Daniel A. Lawrence
- Department of Cardiovascular Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Paul G. Richardson
- Division of Hematologic Malignancies, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Michael Holinstat
- Division of Pharmacology, University of Michigan Medical School, Ann Arbor, MI
| | - Robert C. Hyzy
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Daniel R. Kaul
- Division of Infectious Disease, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Kevin S. Gregg
- Division of Infectious Disease, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Vibha N. Lama
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Michigan Medicine, Ann Arbor, MI
| | - Gregory A. Yanik
- Blood and Marrow Transplant Program, Michigan Medicine, Ann Arbor, MI,Division of Pediatric Hematology-Oncology, Department of Pediatrics, Michigan Medicine, Ann Arbor, MI,CORRESPONDENCE TO: Gregory A. Yanik, MD
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2
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Cairo MS, Cooke KR, Lazarus HM, Chao N. Modified diagnostic criteria, grading classification and newly elucidated pathophysiology of hepatic SOS/VOD after haematopoietic cell transplantation. Br J Haematol 2020; 190:822-836. [PMID: 32133623 DOI: 10.1111/bjh.16557] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Sinusoidal obstruction syndrome (SOS), previously known as hepatic veno-occlusive disease (VOD), remains a multi-organ system complication following haematopoietic cell transplantation (HCT). When SOS/VOD is accompanied by multi-organ dysfunction, overall mortality rates remain >80%. However, the definitions related to the diagnosis and grading of SOS/VOD after HCT are almost 25 years old and require new and contemporary modifications. Importantly, the pathophysiology of SOS/VOD, including the contribution of dysregulated inflammatory and coagulation cascades as well as the critical importance of liver and vascular derived endothelial dysfunction, have been elucidated. Here we summarise new information on pathogenesis of SOS/VOD; identify modifiable and unmodifiable risk factors for disease development; propose novel, contemporary and panel opinion-based diagnostic criteria and an innovative organ-based method of SOS/VOD grading classification; and review current approaches for prophylaxis and treatment of SOS/VOD. This review will hopefully illuminate pathways responsible for drug-induced liver injury and manifestations of disease, sharpen awareness of risk for disease development and enhance the timely and correct diagnosis of SOS/VOD post-HCT.
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Affiliation(s)
- Mitchell S Cairo
- Departments of, Department of, Pediatrics, New York Medical College, Valhalla, NY, USA.,Department of, Medicine, New York Medical College, Valhalla, NY, USA.,Department of, Pathology, New York Medical College, Valhalla, NY, USA.,Department of, Microbiology and Immunology, New York Medical College, Valhalla, NY, USA.,Department of, Cell Biology & Anatomy, New York Medical College, Valhalla, NY, USA
| | - Kenneth R Cooke
- Department of Oncology, the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA
| | - Hillard M Lazarus
- Department of Medicine, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, USA
| | - Nelson Chao
- Departments of, Department of, Medicine, Duke University, Durham, NC, USA.,Department of, Immunology, Duke University, Durham, NC, USA.,Department of, Pathology, Duke University, Durham, NC, USA
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3
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Barash U, Lapidot M, Zohar Y, Loomis C, Moreira A, Feld S, Goparaju C, Yang H, Hammond E, Zhang G, Li JP, Ilan N, Nagler A, Pass HI, Vlodavsky I. Involvement of Heparanase in the Pathogenesis of Mesothelioma: Basic Aspects and Clinical Applications. J Natl Cancer Inst 2019; 110:1102-1114. [PMID: 29579286 DOI: 10.1093/jnci/djy032] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 02/07/2018] [Indexed: 02/07/2023] Open
Abstract
Background Mammalian cells express a single functional heparanase, an endoglycosidase that cleaves heparan sulfate and thereby promotes tumor metastasis, angiogenesis, and inflammation. Malignant mesothelioma is highly aggressive and has a poor prognosis because of the lack of markers for early diagnosis and resistance to conventional therapies. The purpose of this study was to elucidate the mode of action and biological significance of heparanase in mesothelioma and test the efficacy of heparanase inhibitors in the treatment of this malignancy. Methods The involvement of heparanase in mesothelioma was investigated by applying mouse models of mesothelioma and testing the effect of heparanase gene silencing (n = 18 mice per experiment; two different models) and heparanase inhibitors (ie, PG545, defibrotide; n = 18 per experiment; six different models). Synchronous pleural effusion and plasma samples from patients with mesothelioma (n = 35), other malignancies (12 non-small cell lung cancer, two small cell lung carcinoma, four breast cancer, three gastrointestinal cancers, two lymphomas), and benign effusions (five patients) were collected and analyzed for heparanase content (enzyme-linked immunosorbent assay). Eighty-one mesothelioma biopsies were analyzed by H-Score for the prognostic impact of heparanase using immunohistochemistry. All statistical tests were two-sided. Results Mesothelioma tumor growth, measured by bioluminescence or tumor weight at termination, was markedly attenuated by heparanase gene silencing (P = .02) and by heparanase inhibitors (PG545 and defibrotide; P < .001 and P = .01, respectively). A marked increase in survival of the mesothelioma-bearing mice (P < .001) was recorded. Heparanase inhibitors were more potent in vivo than conventional chemotherapy. Clinically, heparanase levels in patients' pleural effusions could distinguish between malignant and benign effusions, and a heparanase H-score above 90 was associated with reduced patient survival (hazard ratio = 1.89, 95% confidence interval = 1.09 to 3.27, P = .03). Conclusions Our results imply that heparanase is clinically relevant in mesothelioma development. Given these preclinical and clinical data, heparanase appears to be an important mediator of mesothelioma, and heparanase inhibitors are worthy of investigation as a new therapeutic modality in mesothelioma clinical trials.
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Affiliation(s)
- Uri Barash
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Moshe Lapidot
- Departments of General Thoracic Surgery, Rambam Health Care Campus, Haifa, Israel
| | - Yaniv Zohar
- Departments of Pathology Rambam Health Care Campus, Haifa, Israel
| | - Cynthia Loomis
- Department of Cardiothoracic Surgery, Langone Medical Center, New York University School of Medicine, New York, NY
| | - Andre Moreira
- Department of Cardiothoracic Surgery, Langone Medical Center, New York University School of Medicine, New York, NY
| | - Sari Feld
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Chandra Goparaju
- Department of Cardiothoracic Surgery, Langone Medical Center, New York University School of Medicine, New York, NY
| | - Haining Yang
- University of Hawaii Cancer Center, Honolulu, HI
| | | | - Ganlin Zhang
- Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Jin-Ping Li
- Department of Medical Biochemistry and Microbiology, University of Uppsala, Uppsala, Sweden
| | - Neta Ilan
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Arnon Nagler
- Department of Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | - Harvey I Pass
- Department of Cardiothoracic Surgery, Langone Medical Center, New York University School of Medicine, New York, NY
| | - Israel Vlodavsky
- Cancer and Vascular Biology Research Center, Rappaport Faculty of Medicine, Technion, Haifa, Israel
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Richardson PG, Triplett BM, Ho VT, Chao N, Dignan FL, Maglio M, Mohty M. Defibrotide sodium for the treatment of hepatic veno-occlusive disease/sinusoidal obstruction syndrome. Expert Rev Clin Pharmacol 2018; 11:113-124. [PMID: 29301447 DOI: 10.1080/17512433.2018.1421943] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Hepatic veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) is an unpredictable condition associated with endothelial-cell damage due to conditioning for hematopoietic stem-cell transplantation (HSCT) or chemotherapy without HSCT. Mortality in patients with VOD/SOS and multi-organ dysfunction (MOD) may be >80%. Areas covered: Defibrotide is the only approved drug for the treatment of severe hepatic VOD/SOS after HSCT in the European Union and hepatic VOD/SOS with renal or pulmonary dysfunction in the United States. Its efficacy in patients with VOD/SOS with MOD post-HSCT was demonstrated in a clinical-trial program that included a historically controlled treatment study, a phase 2 trial, and a large T-IND expanded-access program that also included patients without MOD and who received chemotherapy without HSCT. Expert commentary: Defibrotide appears to protect endothelial cells and restore the thrombolytic-fibrinolytic balance. It addresses a significant clinical need and has demonstrated favorable Day +100 survival and overall adverse-event rates that seem similar to control groups receiving supportive care alone. Currently, defibrotide is under investigation for the prevention of VOD/SOS in high-risk pediatric and adult patients.
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Affiliation(s)
- Paul G Richardson
- a Hematologic Oncology , Harvard Medical School, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute , Boston , MA , USA.,b Hematopoietic Stem Cell Transplantation Program , Dana-Farber Cancer Institute , Boston , MA , USA
| | - Brandon M Triplett
- c Bone Marrow Transplantation and Cellular Therapy , St. Jude Children's Research Hospital , Memphis , TN , USA
| | - Vincent T Ho
- b Hematopoietic Stem Cell Transplantation Program , Dana-Farber Cancer Institute , Boston , MA , USA
| | - Nelson Chao
- d Division of Hematologic Malignancies and Cellular Therapy , Duke Cancer Institute, Duke University , Durham , NC , USA
| | - Fiona L Dignan
- e Department of Clinical Haematology , Central Manchester NHS Foundation Trust , Manchester , UK
| | - Michelle Maglio
- a Hematologic Oncology , Harvard Medical School, Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute , Boston , MA , USA
| | - Mohamad Mohty
- f Hematology Department , Hôpital Saint Antoine, AP-HP, Université Pierre & Marie Curie , Paris , France
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5
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Defibrotide for the treatment of sinusoidal obstruction syndrome: evaluation of response to therapy and patient outcomes. Support Care Cancer 2017; 26:947-955. [PMID: 29022099 DOI: 10.1007/s00520-017-3915-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 10/02/2017] [Indexed: 01/22/2023]
Abstract
PURPOSE Defibrotide is an agent used to treat sinusoidal obstruction syndrome (SOS/VOD) in patients undergoing haemopoietic stem cell transplantation. The aim of this study was to evaluate the effectiveness of defibrotide used within institutional guidelines for the treatment of SOS/VOD in patients undergoing haemopoietic stem cell transplantation (HSCT). METHODS Data for 23 patients was retrospectively reviewed to evaluate the effectiveness of defibrotide and the utility of response criteria to direct therapy as specified within institution guidelines. Patients met institutional criteria for a diagnosis of SOS/VOD based on predominantly Baltimore criteria and received defibrotide. Stabilisation or improvement in symptoms and biochemical markers was required for continuation of therapy with defibrotide. RESULTS Overall, 14 patients responded to therapy. Survival at day 100 post HSCT was 70%. Median serum (total) bilirubin concentrations in all evaluable patients had decreased at days 5 and 10 (p < 0.001). There was a proportional reduction in median weight of 4% by day 5 and 6.6% by day 10 (p < 0.001). On cessation of defibrotide, there was a decrease in the proportion of patients exhibiting hepatomegaly (p = 0.02), ascites (p < 0.01) and requiring oxygen supplementation (p < 0.01), with 70% survival at day 100 post HSCT. CONCLUSION Defibrotide to treat SOS/VOD and continued based on attainment of early response was effective management of this condition. Defibrotide should be considered in any consensus protocol providing guidance on the management of SOS/VOD, with future studies considered to assess appropriate time points for response to therapy during treatment.
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6
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Richardson PG, Krishnan A, Giralt S, Soiffer RJ. Defibrotide for the treatment of severe hepatic veno-occlusive disease/sinusoidal obstruction syndrome: evidence for clinical benefit. Expert Opin Orphan Drugs 2015. [DOI: 10.1517/21678707.2015.1114455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Dalle JH, Giralt SA. Hepatic Veno-Occlusive Disease after Hematopoietic Stem Cell Transplantation: Risk Factors and Stratification, Prophylaxis, and Treatment. Biol Blood Marrow Transplant 2015; 22:400-9. [PMID: 26431626 DOI: 10.1016/j.bbmt.2015.09.024] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 09/24/2015] [Indexed: 12/13/2022]
Abstract
Hepatic veno-occlusive disease (VOD), also known as sinusoidal obstruction syndrome (SOS), can develop in a subset of patients, primarily after myeloablative hematopoietic stem cell transplantation, but it also may occur after reduced-intensity conditioning. Severe VOD/SOS, typically characterized by multiorgan failure, has been associated with a mortality rate greater than 80%. Therefore, an accurate and prompt diagnosis of VOD/SOS is essential for early initiation of appropriate therapy to improve clinical outcomes. Moreover, some studies have support the use of prophylaxis for patients who are at high risk of developing VOD/SOS. This review summarizes risk factors associated with development of VOD/SOS, including pretransplantation patient characteristics and factors related to stem cell transplantation, that can facilitate patient stratification according to risk. The incidence of VOD/SOS, clinical features, and diagnostic criteria are reviewed. Data on emerging treatment strategies for patients with VOD/SOS are discussed in the context of recent treatment guidelines. Additionally, options for prophylaxis in individuals who are at increased risk are presented. Although historically only those patients with moderate to severe VOD/SOS have been treated, early therapy and prophylaxis may be appropriate for many patients and may have the potential to improve patients' outcomes and survival, including for those with nonsevere disease.
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Affiliation(s)
- Jean-Hugues Dalle
- Department of Paediatric Haematology, Paris Diderot University, Sorbonne Paris Cité, Hôpital Robert Debré, APHP, Paris, France
| | - Sergio A Giralt
- Adult Bone Marrow Transplant Service, Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College, New York, New York.
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Moore JM, Avery JW. Defibrotide: a Swiss Army knife intervention in the battle against cerebral malaria. Arterioscler Thromb Vasc Biol 2012; 32:541-4. [PMID: 22345588 DOI: 10.1161/atvbaha.111.242776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Affiliation(s)
- Uwe Platzbecker
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus Dresden, 01307 Dresden, Germany.
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10
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Francischetti IMB, Oliveira CJ, Ostera GR, Yager SB, Debierre-Grockiego F, Carregaro V, Jaramillo-Gutierrez G, Hume JCC, Jiang L, Moretz SE, Lin CK, Ribeiro JMC, Long CA, Vickers BK, Schwarz RT, Seydel KB, Iacobelli M, Ackerman HC, Srinivasan P, Gomes RB, Wang X, Monteiro RQ, Kotsyfakis M, Sá-Nunes A, Waisberg M. Defibrotide interferes with several steps of the coagulation-inflammation cycle and exhibits therapeutic potential to treat severe malaria. Arterioscler Thromb Vasc Biol 2012; 32:786-98. [PMID: 22116094 PMCID: PMC3288196 DOI: 10.1161/atvbaha.111.240291] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 11/05/2011] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The coagulation-inflammation cycle has been implicated as a critical component in malaria pathogenesis. Defibrotide (DF), a mixture of DNA aptamers, displays anticoagulant, anti-inflammatory, and endothelial cell (EC)-protective activities and has been successfully used to treat comatose children with veno-occlusive disease. DF was investigated here as a drug to treat cerebral malaria. METHODS AND RESULTS DF blocks tissue factor expression by ECs incubated with parasitized red blood cells and attenuates prothrombinase activity, platelet aggregation, and complement activation. In contrast, it does not affect nitric oxide bioavailability. We also demonstrated that Plasmodium falciparum glycosylphosphatidylinositol (Pf-GPI) induces tissue factor expression in ECs and cytokine production by dendritic cells. Notably, dendritic cells, known to modulate coagulation and inflammation systemically, were identified as a novel target for DF. Accordingly, DF inhibits Toll-like receptor ligand-dependent dendritic cells activation by a mechanism that is blocked by adenosine receptor antagonist (8-p-sulfophenyltheophylline) but not reproduced by synthetic poly-A, -C, -T, and -G. These results imply that aptameric sequences and adenosine receptor mediate dendritic cells responses to the drug. DF also prevents rosetting formation, red blood cells invasion by P. falciparum and abolishes oocysts development in Anopheles gambiae. In a murine model of cerebral malaria, DF affected parasitemia, decreased IFN-γ levels, and ameliorated clinical score (day 5) with a trend for increased survival. CONCLUSION Therapeutic use of DF in malaria is proposed.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/pharmacology
- Anticoagulants/pharmacology
- Antimalarials/pharmacology
- Blood Coagulation/drug effects
- Cells, Cultured
- Complement Activation/drug effects
- Cytokines/blood
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/parasitology
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Endothelial Cells/drug effects
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Endothelial Cells/parasitology
- Female
- Glycosylphosphatidylinositols/metabolism
- Hemoglobins/metabolism
- Humans
- Inflammation Mediators/blood
- Malaria, Cerebral/blood
- Malaria, Cerebral/drug therapy
- Malaria, Cerebral/immunology
- Malaria, Cerebral/parasitology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Nitric Oxide/metabolism
- Plasmodium berghei/drug effects
- Plasmodium berghei/pathogenicity
- Plasmodium falciparum/drug effects
- Plasmodium falciparum/growth & development
- Plasmodium falciparum/metabolism
- Plasmodium falciparum/pathogenicity
- Platelet Aggregation/drug effects
- Polydeoxyribonucleotides/pharmacology
- Receptors, Purinergic P1/drug effects
- Receptors, Purinergic P1/metabolism
- Severity of Illness Index
- Thromboplastin/metabolism
- Time Factors
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Affiliation(s)
- Ivo M B Francischetti
- Section of Vector Biology, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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Avery JW, Smith GM, Owino SO, Sarr D, Nagy T, Mwalimu S, Matthias J, Kelly LF, Poovassery JS, Middii JD, Abramowsky C, Moore JM. Maternal malaria induces a procoagulant and antifibrinolytic state that is embryotoxic but responsive to anticoagulant therapy. PLoS One 2012; 7:e31090. [PMID: 22347435 PMCID: PMC3274552 DOI: 10.1371/journal.pone.0031090] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 01/02/2012] [Indexed: 01/06/2023] Open
Abstract
Low birth weight and fetal loss are commonly attributed to malaria in endemic areas, but the cellular and molecular mechanisms that underlie these poor birth outcomes are incompletely understood. Increasing evidence suggests that dysregulated hemostasis is important in malaria pathogenesis, but its role in placental malaria (PM), characterized by intervillous sequestration of Plasmodium falciparum, proinflammatory responses, and excessive fibrin deposition is not known. To address this question, markers of coagulation and fibrinolysis were assessed in placentae from malaria-exposed primigravid women. PM was associated with significantly elevated placental monocyte and proinflammatory marker levels, enhanced perivillous fibrin deposition, and increased markers of activated coagulation and suppressed fibrinolysis in placental plasma. Submicroscopic PM was not proinflammatory but tended to be procoagulant and antifibrinolytic. Birth weight trended downward in association with placental parasitemia and high fibrin score. To directly assess the importance of coagulation in malaria-induced compromise of pregnancy, Plasmodium chabaudi AS-infected pregnant C57BL/6 mice were treated with the anticoagulant, low molecular weight heparin. Treatment rescued pregnancy at midgestation, with substantially decreased rates of active abortion and reduced placental and embryonic hemorrhage and necrosis relative to untreated animals. Together, the results suggest that dysregulated hemostasis may represent a novel therapeutic target in malaria-compromised pregnancies.
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Affiliation(s)
- John W. Avery
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Geoffrey M. Smith
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Simon O. Owino
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Demba Sarr
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Tamas Nagy
- Department of Veterinary Pathology, University of Georgia, Athens, Georgia, United States of America
| | - Stephen Mwalimu
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - James Matthias
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia, United States of America
| | - Lauren F. Kelly
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Jayakumar S. Poovassery
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Joab D. Middii
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
- Centre for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Carlos Abramowsky
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, United States of America
| | - Julie M. Moore
- Department of Infectious Diseases and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America
- * E-mail:
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Lee ACW, Goh PYT. Dactinomycin-induced Hepatic Sinusoidal Obstruction Syndrome Responding to Treatment with N-acetylcysteine. J Cancer 2011; 2:527-31. [PMID: 22043237 PMCID: PMC3204401 DOI: 10.7150/jca.2.527] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Accepted: 10/20/2011] [Indexed: 02/05/2023] Open
Abstract
Hepatic sinusoidal obstruction syndrome is commonly described in pediatric oncology as a complication of chemotherapy. It has also been occasionally reported in adult cancer patients. Treatment is largely supportive with fluid restriction. A 16-month-old girl with stage II Wilms tumor receiving post-nephrectomy chemotherapy with dactinomycin and vincristine developed hepatic sinusoidal obstruction syndrome with painful hepatomegaly, ascites with significant weight gain, grossly deranged liver function, severe thrombocytopenia, and reversal of blood flow in the portal vein on Doppler sonography. Treatment with N-acetylcysteine was followed by complete resolution of clinical signs and amelioration of laboratory abnormalities within 72 hours of treatment. N-acetylcysteine is a safe and probably an effective treatment for dactinomycin-induced hepatic sinusoidal obstructive syndrome.
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Affiliation(s)
- Anselm Chi-wai Lee
- 1. Children's Haematology and Cancer Centre, Mount Elizabeth Hospital, Singapore
- ✉ Corresponding author: Dr Anselm C.W. Lee, Children's Haematology and Cancer Centre, Level 4, Mount Elizabeth Hospital, 3 Mount Elizabeth, Singapore 228510. Tel: 65-67312673; Fax: 65-62354924;
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