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Del Carmen Camacho-Rea M, Martínez-Gómez LE, Martinez-Armenta C, Martínez-Nava GA, Ortega-Peña S, Olea-Torres J, Herrera-López B, Suarez-Ahedo C, Vázquez-Cárdenas P, Vidal-Vázquez RP, Ramírez-Hinojosa JP, Vargas-Alarcón G, Posadas-Sánchez R, Fragoso JM, De Jesús Martínez-Ruiz F, Zayago-Angeles DM, Mata-Miranda MM, Vazquez-Zapien GJ, Martínez-Cuazitl A, Garcia-Galicia A, Granados J, Ramos L, Rodríguez-Pérez JM, Pineda C, López-Reyes A. Association of TLR8 Variants in Sex-Based Clinical Differences in Patients with COVID-19. Biochem Genet 2024:10.1007/s10528-024-10839-w. [PMID: 38814383 DOI: 10.1007/s10528-024-10839-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 05/13/2024] [Indexed: 05/31/2024]
Abstract
The host immune response might confer differential vulnerability to SARS-CoV-2 infection. The Toll-like receptor 8 (TLR8), could participated for severe COVID-19 outcomes. To investigated the relationship of TLR8 rs3764879-C/G, rs3764880-A/G, and rs3761624-A/G with COVID-19 outcomes and with biochemical parameters. A cross-sectional study of 830 laboratory-confirmed COVID-19 patients was performed, and classified into mild, severe, critical, and deceased outcomes. The TLR8 rs3764879-C/G, rs3764880-A/G, and rs3761624-A/G polymorphisms were genotyped. A logistic regression analysis was performed to determinate the association with COVID-19. A stratified analysis was by alleles was done with clinical and metabolic markets. In all outcomes, men presented the highest ferritin levels compared to women (P < 0.001). LDH levels were significantly different between sex in mild (P = 0.003), severe (P < 0.001) and deceased (P = 0.01) COVID-19 outcomes. The GGG haplotype showed an Odds Ratio of 1.55 (Interval Confidence 95% 1.05-2.32; P = 0.03) in men. Among patients with severe outcome, we observed that the carriers of the GGG haplotype had lower Ferritin, C-reactive protein and LDH levels than the CAA carriers (P < 0.01). After further stratified by sex, these associations were also seen in the male patients, except for D-dimer. Interestingly, among men patients, we could observe associations between TLR8 haplotypes and Ferritin (P < 0.001), D-dimer (P = 0.04), C-reactive protein, and Lactate dehydrogenase in mild (P = 0.04) group. Our results suggest that even though TLR8 haplotypes show a significant association with COVID-19 outcomes, they are associated with clinical markers in COVID-19 severity.
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Affiliation(s)
- María Del Carmen Camacho-Rea
- Departamento de Nutrición Animal, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, CDMX, México
| | - Laura Edith Martínez-Gómez
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Carlos Martinez-Armenta
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Gabriela Angélica Martínez-Nava
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Silvestre Ortega-Peña
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Jessel Olea-Torres
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Brígida Herrera-López
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Carlos Suarez-Ahedo
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Paola Vázquez-Cárdenas
- Centro de Innovación Médica Aplicada, Subdirección de Epidemiología E Infectología, Hospital General Dr. Manuel Gea González, CDMX, México
| | - Rosa P Vidal-Vázquez
- Centro de Innovación Médica Aplicada, Subdirección de Epidemiología E Infectología, Hospital General Dr. Manuel Gea González, CDMX, México
| | - Juan Pablo Ramírez-Hinojosa
- Centro de Innovación Médica Aplicada, Subdirección de Epidemiología E Infectología, Hospital General Dr. Manuel Gea González, CDMX, México
| | - Gilberto Vargas-Alarcón
- Centro de Innovación Médica Aplicada, Subdirección de Epidemiología E Infectología, Hospital General Dr. Manuel Gea González, CDMX, México
| | | | - José Manuel Fragoso
- Departamento de Biología Molecular, Instituto Nacional de Cardiología Ignacio Chávez, CDMX, México
| | - Felipe De Jesús Martínez-Ruiz
- Nuevo Hospital General Delegación Regional Sur de La Ciudad de México, Instituto de Seguridad y Servicios Sociales Para los Trabajadores del Estado (ISSSTE), CDMX, México
| | - Dulce María Zayago-Angeles
- Nuevo Hospital General Delegación Regional Sur de La Ciudad de México, Instituto de Seguridad y Servicios Sociales Para los Trabajadores del Estado (ISSSTE), CDMX, México
| | - Mónica Maribel Mata-Miranda
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Militar de Medicina, Universidad del Ejército y Fuerza Aérea, CDMX, México
| | - Gustavo Jesús Vazquez-Zapien
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Militar de Medicina, Universidad del Ejército y Fuerza Aérea, CDMX, México
| | - Adriana Martínez-Cuazitl
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Militar de Medicina, Universidad del Ejército y Fuerza Aérea, CDMX, México
| | - Armando Garcia-Galicia
- Servicio de Cirugía General, Hospital Central Norte Petróleos Mexicanos (PEMEX), CDMX, México
| | - Julio Granados
- Departamento de Trasplantes, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, CDMX, México
| | - Luis Ramos
- Departamento de Trasplantes, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, CDMX, México
| | | | - Carlos Pineda
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México
| | - Alberto López-Reyes
- Unidad de Gerociencias, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra Calz México-Xochimilco 289, Coapa, Col. Arenal de Guadalupe, Tlalpan, 14389, CDMX, México.
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Li Z, Shan X, Yang G, Dong L. LGK974 suppresses the formation of deep vein thrombosis in mice with sepsis. Int Immunopharmacol 2024; 127:111458. [PMID: 38160565 DOI: 10.1016/j.intimp.2023.111458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/24/2023] [Accepted: 12/25/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Sepsis is a disorder characterized by host inflammation and is caused by systemic infection. The inflammatory cytokine storm results in platelet overactivation, leading to coagulation dysfunction and thrombosis, but the underlying mechanism remains poorly understood. Recent evidence has shown that the Wnt/β-catenin signaling pathway is related to sepsis, but its role and mechanism in sepsis complicated with deep vein thrombosis (DVT) are unclear. METHODS In this study, a cecal ligation and puncture (CLP)-induced sepsis model and DVT mouse model were constructed by inferior vena cava ligation. The levels of serum inflammatory factors and adhesion molecules were measured in each group, and the thrombus weight and size, hematoxylin-eosin staining, collagen fiber tissue, and transcriptome of the venous wall were analyzed. The activation of the Wnt/β-catenin signal was evaluated by quantitative real-time polymerase chain reaction, Western blotting, ELISA, and immunohistochemical and immunofluorescence methods. RESULTS Sepsis significantly promoted the formation of venous wall collagen fibers and DVT. In addition, Porcn significantly upregulated and activated the Wnt/β-catenin signaling pathway in sepsis mouse models with DVT. In contrast, the Wnt signaling inhibitor LGK974 was found to improve the survival rate, decrease thrombosis, and inhibit the expression of inflammation and adhesion molecules in sepsis mice with DVT. Therefore, activation of the Wnt/β-catenin signal may promote the formation of DVT in sepsis mice. CONCLUSIONS LGK974 protects against DVT formation in sepsis mice by inhibiting the activation of the Wnt/β-catenin signal and down-regulating the production of proinflammatory cytokines, PAI-1, and adhesion molecules. LGK974 may be a new candidate for the treatment of sepsis complicated with DVT.
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Affiliation(s)
- Zhishu Li
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300000, China; Department of Respiratory and Critical Care Medicine, Guangyuan Central Hospital, Guangyuan, Sichuan 628000, China
| | - Xiaoxi Shan
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300000, China
| | - Guolin Yang
- Laboratory Animal Centre, North Sichuan Medical College, Nanchong, Sichuan 637100, China
| | - Lixia Dong
- Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin 300000, China.
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Modulating the rate of fibrin formation and clot structure attenuates microvascular thrombosis in systemic inflammation. Blood Adv 2021; 4:1340-1349. [PMID: 32259201 DOI: 10.1182/bloodadvances.2020001500] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/10/2020] [Indexed: 12/17/2022] Open
Abstract
Systemic inflammation can lead to coagulopathy and disseminated intravascular coagulation (DIC). In prior studies, the recombinant A2 domain of human von Willebrand factor (VWF; A2 protein) attenuated DIC and decreased mortality in lipopolysaccharide (LPS)-treated mice. Here, we performed studies to dissect the mechanism by which the A2 protein moderates DIC. We used confocal microscopy to analyze the fibrin clot structure in plasma from healthy humans and endotoxemic mice, turbidity assays to examine fibrin polymerization, and a murine model for LPS-induced DIC and introduced a loss-of-function mutation into the A2 protein for fibrin. The mutation of the residue E1567 located in the α2 helix of the folded A2 domain of VWF inhibited binding activity for fibrin, possibly mapping a novel region containing a putative binding site for fibrin. The A2 protein increased the initial rate of change of fibrin polymerization, intercalated into the fibrin network, and modified the resultant clot structure in vitro. Furthermore, ex vivo experiments using plasma from mice with endotoxemia treated with the A2 protein revealed an increased rate of fibrin formation and an altered clot structure as compared with plasma from nontreated sick animals. Moreover, and in contrast to the A2 mutant, the A2 protein improved survival and reduced fibrin deposition and microvascular thrombosis in mice with endotoxemia-induced DIC. Importantly, in vivo and in vitro studies indicated that the A2 protein did not affect experimental thrombosis. Thus, we provide evidence for a novel treatment to attenuate systemic inflammation-induced coagulopathy/DIC via targeting fibrin formation, without an increased risk for bleeding.
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Tsai HJ, Shih CC, Chang KY, Liao MH, Liaw WJ, Wu CC, Tsao CM. Angiotensin-(1-7) treatment blocks lipopolysaccharide-induced organ damage, platelet dysfunction, and IL-6 and nitric oxide production in rats. Sci Rep 2021; 11:610. [PMID: 33436885 PMCID: PMC7804205 DOI: 10.1038/s41598-020-79902-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 12/14/2020] [Indexed: 12/29/2022] Open
Abstract
Sepsis can lead to shock, multiple organ failure, and even death. Platelets play an active role in the pathogenesis of sepsis-induced multiple organ failure. Angiotensin (Ang)-(1–7), a biologically active peptide, counteracts various effects of Ang II and attenuates inflammatory responses, reactive oxygen species production, and apoptosis. We evaluated the effects of Ang-(1–7) on organ injury and platelet dysfunction in rats with endotoxaemia. We treated male Wistar rats with saline or lipopolysaccharide (LPS, 10 mg, intravenously) then Ang-(1–7) (1 mg/kg, intravenous infusion for 3 h beginning 30 min after LPS administration). We analysed several haemodynamic, biochemical, and inflammatory parameters, as well as platelet counts and aggregation. Ang-(1–7) improved hypotension and organ dysfunction, and attenuated plasma interleukin-6, chemokines and nitric oxide production in rats after LPS administration. The LPS-induced reduction in platelet aggregation, but not the decreased platelet count, was restored after Ang-(1–7) treatment. The protein expression of iNOS and IκB, but not phosphorylated ERK1/2 and p38, was diminished in Ang-(1–7)-treated LPS rats. The histological changes in liver and lung were significantly attenuated in Ang-(1–7)-treated LPS rats. Our results suggest that Ang-(1–7) ameliorates endotoxaemic-induced organ injury and platelet dysfunction, likely through the inhibition of the inflammatory response and nitric oxide production.
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Affiliation(s)
- Hsin-Jung Tsai
- Department of Anesthesiology, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei, 112, Taiwan
| | - Chih-Chin Shih
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Kuang-Yi Chang
- Department of Anesthesiology, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei, 112, Taiwan.,Department of Anesthesiology, National Yang-Ming University, Taipei, Taiwan
| | - Mei-Hui Liao
- Department of Nursing, Oriental Institute of Technology, New Taipei City, Taiwan
| | - Wen-Jinn Liaw
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan.,Department of Anesthesiology, Chung Shan Medical University and Hospital, Taichung, Taiwan
| | - Chin-Chen Wu
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Ming Tsao
- Department of Anesthesiology, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Beitou District, Taipei, 112, Taiwan. .,Department of Anesthesiology, National Yang-Ming University, Taipei, Taiwan. .,Department of Anesthesiology, National Defense Medical Center, Taipei, Taiwan.
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Peetermans M, Meyers S, Liesenborghs L, Vanhoorelbeke K, De Meyer SF, Vandenbriele C, Lox M, Hoylaerts MF, Martinod K, Jacquemin M, Vanassche T, Verhamme P. Von Willebrand factor and ADAMTS13 impact on the outcome of Staphylococcus aureus sepsis. J Thromb Haemost 2020; 18:722-731. [PMID: 31758651 DOI: 10.1111/jth.14686] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/18/2019] [Indexed: 01/02/2023]
Abstract
BACKGROUND Previous clinical evidence correlates levels of von Willebrand factor (VWF) and its cleaving protease ADAMTS13 with outcome in septic patients. No previous studies addressed if VWF and ADAMTS13 affected the outcome of Staphylococcus aureus sepsis. OBJECTIVES We studied the role of VWF and ADAMTS13 in S. aureus sepsis both in patients and in mice. METHODS VWF levels and ADAMTS13 activity levels were measured in plasma samples from 89 S. aureus bacteremia patients by chemiluminescent assays and were correlated with clinical sepsis outcome parameters. In wild-type mice and mice deficient in VWF and ADAMTS13, we investigated the outcome of S. aureus sepsis and quantified bacterial clearance and organ microthrombi. RESULTS In patients with S. aureus bloodstream infections, high VWF levels and low ADAMTS13 activity levels correlated with disease severity and with parameters of inflammation and disseminated intravascular coagulation. In septic mice, VWF deficiency attenuated mortality, whereas ADAMTS13 deficiency increased mortality. Bacterial clearance was enhanced in VWF-deficient mice. The differences in mortality for the studied genotypes were associated with differential loads of organ microthrombi in both liver and kidneys. CONCLUSIONS In conclusion, this study reports the consistent relation of VWF, ADAMTS13 and their ratio to disease severity in patients and mice with S. aureus sepsis. Targeting VWF multimers and/or the relative ADAMTS13 deficiency that occurs in sepsis should be explored as a potential new therapeutic target in S. aureus endovascular infections.
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Affiliation(s)
- Marijke Peetermans
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Severien Meyers
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Laurens Liesenborghs
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, University of Leuven campus Kulak Kortrijk, Kortrijk, Belgium
| | - Simon F De Meyer
- Laboratory for Thrombosis Research, University of Leuven campus Kulak Kortrijk, Kortrijk, Belgium
| | - Christophe Vandenbriele
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Marleen Lox
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Marc F Hoylaerts
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Kimberly Martinod
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Marc Jacquemin
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Thomas Vanassche
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
| | - Peter Verhamme
- Department of Cardiovascular Sciences, Center for Molecular and Vascular Biology, University of Leuven, Leuven, Belgium
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Ramadori P, Klag T, Malek NP, Heikenwalder M. Platelets in chronic liver disease, from bench to bedside. JHEP Rep 2019; 1:448-459. [PMID: 32039397 PMCID: PMC7005648 DOI: 10.1016/j.jhepr.2019.10.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/04/2019] [Accepted: 10/09/2019] [Indexed: 02/07/2023] Open
Abstract
In the last decade, numerous studies revealed physiologic and pathophysiologic roles of platelets beyond haemostasis, a process to prevent and stop bleeding. These include the activation of the immune system and the promotion of inflammation, infection and cancer. Hence, the emerging view on the role of platelets has shifted - platelets are now seen as alert "sentinels" of the immune compartment, rather than passive bystanders. Herein, we review well-established and newly discovered features of platelets that define their natural role in maintaining blood haemostasis, but also their functional relationship with other cells of the immune system. We focus on recent studies underlining functional involvement of platelets in chronic liver diseases and cancer, as well as the effects of anti-platelet therapy in these contexts. Finally, we illustrate the potential of platelets as possible diagnostic and therapeutic tools in liver disease based on recently developed methodologies.
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Affiliation(s)
- Pierluigi Ramadori
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), Heidelberg, Germany
| | - Thomas Klag
- Department of Internal Medicine I, University of Tuebingen, Tuebingen, Germany
| | - Nisar Peter Malek
- Department of Internal Medicine I, University of Tuebingen, Tuebingen, Germany
- Corresponding authors. Address: Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany, Tel.: 0049-6221423891, or Department of Internal Medicine I, University Hospital of Tuebingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany, Tel.: 0049-70712982721.
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), Heidelberg, Germany
- Corresponding authors. Address: Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany, Tel.: 0049-6221423891, or Department of Internal Medicine I, University Hospital of Tuebingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany, Tel.: 0049-70712982721.
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Williams B, Neder J, Cui P, Suen A, Tanaka K, Zou L, Chao W. Toll-like receptors 2 and 7 mediate coagulation activation and coagulopathy in murine sepsis. J Thromb Haemost 2019; 17:1683-1693. [PMID: 31211901 PMCID: PMC7197442 DOI: 10.1111/jth.14543] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/10/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND Sepsis is a life-threatening condition often manifested as marked inflammation and severe coagulopathy. Toll-like receptors (TLRs) play a pivotal role in inflammation, organ dysfunction and mortality in animal sepsis. OBJECTIVES To investigate the role of TLR signaling in mediating sepsis-induced coagulopathy (SIC) in a mouse model. METHODS Polymicrobial sepsis was created by cecal ligation and puncture (CLP) or fecal slurry peritoneal injection. To quantify global clotting function, two viscoelastic assays were performed with rotational thromboelastometry, and the results were presented as maximum clot firmness (MCF): (a) EXTEM to test tissue factor (TF)-initiated clot formation; and (b) FIBTEM to test EXTEM in the presence of a platelet inhibitor, cytochalasin D. Plasma coagulation factors were quantified with ELISA. TF gene expression and protein expression were determined with real-time quantitative reverse transcription PCR and flow cytometry, respectively. RESULTS Between 4 and 24 hours after CLP surgery, wild-type mice showed significant MCF reduction in both EXTEM and FIBTEM tests. This was accompanied by marked thrombocytopenia and a significant increase in the levels of plasminogen activator inhibitor-1, plasma TF, and D-dimer. In comparison, TLR2-/- and TLR7-/- CLP mice showed preserved MCF and platelet counts, and near-normal plasma TF levels. Bone marrow-derived macrophages treated with a TLR2 agonist Pam3cys-Ser-(Lys)4 (Pam3cys) or a TLR7 agonist (R837) showed marked increases in TF gene expression and protein expression. MicroRNA-146a, a newly identified proinflammatory mediator that is upregulated during sepsis, induced TF production via a TLR7-dependent mechanism. CONCLUSIONS Murine sepsis leads to an increased procoagulant response, thrombocytopenia, and global coagulopathy. TLR2 and TLR7 play an important role in procoagulant production and in SIC.
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Affiliation(s)
- Brittney Williams
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jessica Neder
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Ping Cui
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Andrew Suen
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Kenichi Tanaka
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Lin Zou
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology & Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland
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8
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Evans CE, Spier AB, Zhao YY. Sepsis-induced thrombus formation and cell-specific HIFs. Thromb Res 2018; 171:187-189. [PMID: 30220434 DOI: 10.1016/j.thromres.2018.08.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/01/2018] [Accepted: 08/24/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Colin E Evans
- Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA; Department of Pediatrics, Division of Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Addie B Spier
- Metro Infectious Disease Consultants, Chicago, IL, USA
| | - You-Yang Zhao
- Program for Lung and Vascular Biology, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA; Department of Pediatrics, Division of Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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9
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Gotts JE, Abbott J, Fang X, Yanagisawa H, Takasaka N, Nishimura SL, Calfee CS, Matthay MA. Cigarette Smoke Exposure Worsens Endotoxin-Induced Lung Injury and Pulmonary Edema in Mice. Nicotine Tob Res 2018; 19:1033-1039. [PMID: 28340238 DOI: 10.1093/ntr/ntx062] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 03/07/2017] [Indexed: 01/19/2023]
Abstract
Introduction Cigarette smoking (CS) remains a major public health concern and has recently been associated with an increased risk of developing acute respiratory distress syndrome (ARDS). Bronchoalveolar lavage (BAL) experiments in human volunteers have demonstrated that active smokers develop increased alveolar-epithelial barrier permeability to protein after inhaling lipopolysaccharide (LPS). Here we tested the hypothesis that short-term whole-body CS exposure would increase LPS-induced lung edema in mice. Methods Adult mice were exposed in a Teague TE-10 machine to CS from 3R4F cigarettes at 100 mg/m3 total suspended particulates for 12 days, then given LPS or saline intratracheally. Control mice were housed in the same room without CS exposure. Post-mortem measurements included gravimetric lung water and BAL protein, cell counts, and lung histology. Cytokines were measured in lung homogenate by ELISA and in plasma by Luminex and ELISA. Results In CS-exposed mice, intratracheal LPS caused greater increases in pulmonary edema by gravimetric measurement and histologic scoring. CS-exposed mice also had an increase in BAL neutrophilia, lung IL-6, and plasma CXCL9, a T-cell chemoattractant. Intratracheal LPS concentrated blood hemoglobin to a greater degree in CS-exposed mice, consistent with an increase in systemic vascular permeability. Conclusions These results demonstrate that CS exposure in endotoxin injured mice increases the severity of acute lung injury. The increased lung IL-6 in CS-exposed LPS-injured mice indicates that this potent cytokine, previously shown to predict mortality in patients with ARDS, may play a role in exacerbating lung injury in smokers and may have utility as a biomarker of tobacco-related lung injury. Implications Our results suggest that short-term CS exposure at levels that cause no overt lung injury may still prime the lung for acute inflammatory damage from a "second hit", a finding that mirrors the increased risk of developing ARDS in patients who smoke. This model may be useful for evaluating the acute pulmonary toxicity of existing and/or novel tobacco products and identifying biomarkers of tobacco-related lung injury.
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Affiliation(s)
- Jeffrey E Gotts
- Departments of Medicine and Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA
| | - Jason Abbott
- Departments of Medicine and Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA
| | - Xiaohui Fang
- Departments of Medicine and Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA
| | - Haru Yanagisawa
- Department of Pathology, University of California, San Francisco, CA
| | - Naoki Takasaka
- Department of Pathology, University of California, San Francisco, CA
| | | | - Carolyn S Calfee
- Departments of Medicine and Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA
| | - Michael A Matthay
- Departments of Medicine and Anesthesia, Cardiovascular Research Institute, University of California, San Francisco, CA
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Vasopressin V1A receptors mediate the stabilization of intestinal mucosal oxygenation during hypercapnia in septic rats. Microvasc Res 2016; 106:24-30. [DOI: 10.1016/j.mvr.2016.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 02/28/2016] [Accepted: 03/05/2016] [Indexed: 12/27/2022]
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11
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Shubin NJ, Glukhova VA, Clauson M, Truong P, Abrink M, Pejler G, White NJ, Deutsch GH, Reeves SR, Vaisar T, James RG, Piliponsky AM. Proteome analysis of mast cell releasates reveals a role for chymase in the regulation of coagulation factor XIIIA levels via proteolytic degradation. J Allergy Clin Immunol 2016; 139:323-334. [PMID: 27302551 DOI: 10.1016/j.jaci.2016.03.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/03/2016] [Accepted: 03/17/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Mast cells are significantly involved in IgE-mediated allergic reactions; however, their roles in health and disease are incompletely understood. OBJECTIVE We aimed to define the proteome contained in mast cell releasates on activation to better understand the factors secreted by mast cells that are relevant to the contribution of mast cells in diseases. METHODS Bone marrow-derived cultured mast cells (BMCMCs) and peritoneal cell-derived mast cells were used as "surrogates" for mucosal and connective tissue mast cells, respectively, and their releasate proteomes were analyzed by mass spectrometry. RESULTS Our studies showed that BMCMCs and peritoneal cell-derived mast cells produced substantially different releasates following IgE-mediated activation. Moreover, we observed that the transglutaminase coagulation factor XIIIA (FXIIIA) was one of the most abundant proteins contained in the BMCMC releasates. Mast cell-deficient mice exhibited increased FXIIIA plasma and activity levels as well as reduced bleeding times, indicating that mast cells are more efficient in their ability to downregulate FXIIIA than in contributing to its amounts and functions in homeostatic conditions. We found that human chymase and mouse mast cell protease-4 (the mouse homologue of human chymase) had the ability to reduce FXIIIA levels and function via proteolytic degradation. Moreover, we found that chymase deficiency led to increased FXIIIA amounts and activity, as well as reduced bleeding times in homeostatic conditions and during sepsis. CONCLUSIONS Our study indicates that the mast cell protease content can shape its releasate proteome. Moreover, we found that chymase plays an important role in the regulation of FXIIIA via proteolytic degradation.
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Affiliation(s)
- Nicholas J Shubin
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Veronika A Glukhova
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Morgan Clauson
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Phuong Truong
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Magnus Abrink
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University for Agricultural Sciences, Uppsala, Sweden
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden; Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Nathan J White
- Division of Emergency Medicine, Department of Medicine, University of Washington, Seattle, Wash
| | - Gail H Deutsch
- Department of Laboratories, Seattle Children's Research Institute, Seattle, Wash
| | - Stephen R Reeves
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash
| | - Tomas Vaisar
- Division of Metabolism, Endocrinology, and Nutrition, Department of Medicine, University of Washington, Seattle, Wash
| | - Richard G James
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Adrian M Piliponsky
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash.
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Bane CE, Ivanov I, Matafonov A, Boyd KL, Cheng Q, Sherwood ER, Tucker EI, Smiley ST, McCarty OJT, Gruber A, Gailani D. Factor XI Deficiency Alters the Cytokine Response and Activation of Contact Proteases during Polymicrobial Sepsis in Mice. PLoS One 2016; 11:e0152968. [PMID: 27046148 PMCID: PMC4821616 DOI: 10.1371/journal.pone.0152968] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 03/22/2016] [Indexed: 11/18/2022] Open
Abstract
Sepsis, a systemic inflammatory response to infection, is often accompanied by abnormalities of blood coagulation. Prior work with a mouse model of sepsis induced by cecal ligation and puncture (CLP) suggested that the protease factor XIa contributed to disseminated intravascular coagulation (DIC) and to the cytokine response during sepsis. We investigated the importance of factor XI to cytokine and coagulation responses during the first 24 hours after CLP. Compared to wild type littermates, factor XI-deficient (FXI-/-) mice had a survival advantage after CLP, with smaller increases in plasma levels of TNF-α and IL-10 and delayed IL-1β and IL-6 responses. Plasma levels of serum amyloid P, an acute phase protein, were increased in wild type mice 24 hours post-CLP, but not in FXI-/- mice, supporting the impression of a reduced inflammatory response in the absence of factor XI. Surprisingly, there was little evidence of DIC in mice of either genotype. Plasma levels of the contact factors factor XII and prekallikrein were reduced in WT mice after CLP, consistent with induction of contact activation. However, factor XII and PK levels were not reduced in FXI-/- animals, indicating factor XI deficiency blunted contact activation. Intravenous infusion of polyphosphate into WT mice also induced changes in factor XII, but had much less effect in FXI deficient mice. In vitro analysis revealed that factor XIa activates factor XII, and that this reaction is enhanced by polyanions such polyphosphate and nucleic acids. These data suggest that factor XI deficiency confers a survival advantage in the CLP sepsis model by altering the cytokine response to infection and blunting activation of the contact (kallikrein-kinin) system. The findings support the hypothesis that factor XI functions as a bidirectional interface between contact activation and thrombin generation, allowing the two processes to influence each other.
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Affiliation(s)
- Charles E. Bane
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Ivan Ivanov
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Anton Matafonov
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
- Department of Bioengineering and Organic Chemistry, Tomsk Polytechnic University, Tomsk, Russia
| | - Kelli L. Boyd
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Qiufang Cheng
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Edward R. Sherwood
- Department of Anesthesiology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Erik I. Tucker
- Aronora, Inc., Portland, Oregon, United States of America
| | - Stephen T. Smiley
- National Institute of Allergy and Infectious Disease, Bethesda, Maryland, United States of America
| | - Owen J. T. McCarty
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Andras Gruber
- Aronora, Inc., Portland, Oregon, United States of America
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, Oregon, United States of America
| | - David Gailani
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, Tennessee, United States of America
- * E-mail:
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13
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Lam FW, Cruz MA, Parikh K, Rumbaut RE. Histones stimulate von Willebrand factor release in vitro and in vivo. Haematologica 2016; 101:e277-9. [PMID: 27013650 DOI: 10.3324/haematol.2015.140632] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Fong W Lam
- Center for Translational Research on Inflammatory Diseases (CTRID), Baylor College of Medicine, Houston, TX, USA Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX, USA Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Miguel A Cruz
- Center for Translational Research on Inflammatory Diseases (CTRID), Baylor College of Medicine, Houston, TX, USA Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX, USA Baylor College of Medicine Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Kathan Parikh
- Center for Translational Research on Inflammatory Diseases (CTRID), Baylor College of Medicine, Houston, TX, USA Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX, USA Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Rolando E Rumbaut
- Center for Translational Research on Inflammatory Diseases (CTRID), Baylor College of Medicine, Houston, TX, USA Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX, USA Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA Baylor College of Medicine Department of Medicine, Baylor College of Medicine, Houston, TX, USA
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Effects of gabexate mesilate on coagulopathy and organ dysfunction in rats with endotoxemia: a potential use of thrombelastography in endotoxin-induced sepsis. Blood Coagul Fibrinolysis 2015; 26:175-84. [PMID: 25396762 DOI: 10.1097/mbc.0000000000000214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sepsis and its associated multiple organ failure are related to high mortality in critical patients. Several studies have reported that gabexate mesilate, a synthetic inhibitor of trypsin-like serine protease, protects tissues/organs against injury in the models of endotoxemia. The aim of this study was to examine whether gabexate mesilate could attenuate coagulopathy and organ dysfunction in lipopolysaccharide (LPS)-induced sepsis model by using thrombelastography (TEG). LPS (7.5 mg/kg/h, intravenouly for 4 h) was administered to male adult Wistar rats. Some of the LPS rats received a continuous infusion of gabexate mesilate (10 mg/kg/h, intravenously for 8.5 h) for 30 min before the LPS administration. Variable parameters of hemodynamics, biochemistry, hemostasis and inflammatory response were measured for 6 h after the LPS infusion. TEG variables (R-time, K-time, α-angle, and maximal amplitude) were also measured. The pretreatment of LPS rats with gabexate mesilate significantly attenuated the lung, liver and kidney dysfunction, consumptive coagulopathy, the increases in serum tumor necrosis factor-α, interleukin-6, plasma thrombin-antithrombin complex and plasminogen activator inhibitor-1, and neutrophils infiltration score in lung, liver and kidney, compared with the LPS alone group. In addition, TEG parameters correlated with tissue and liver injury in the late phase of endotoxemia. In particular, a strong negative correlation between maximal amplitude at 4 h and Ln (lactate dehydrogenase) at 6 h after LPS infusion was noted (r = -0.752, P < 0.001, R = 0.566). These results indicate that beneficial effects of anticoagulants (e.g. gabexate mesilate) in endotoxemia could be monitored by TEG per se.
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15
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Experimental TLR4 inhibition improves intestinal microcirculation in endotoxemic rats. Microvasc Res 2015; 101:33-7. [DOI: 10.1016/j.mvr.2015.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 06/19/2015] [Accepted: 06/22/2015] [Indexed: 12/14/2022]
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16
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Beck C, Barthel F, Hahn AM, Vollmer C, Herminghaus A, Schäfer S, Bauer I, Picker O. The beneficial effects of acute hypercapnia on microcirculatory oxygenation in an animal model of sepsis are independent of K(+)ATP channels. Microvasc Res 2015; 99:78-85. [PMID: 25758765 DOI: 10.1016/j.mvr.2015.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 02/13/2015] [Accepted: 02/27/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Acute hypercapnia maintains the microcirculatory oxygenation of the splanchnic region during sepsis. The first aim of this study was to characterize the role of K(+)ATP channels on the microcirculatory flow and oxygenation during acute moderate hypercapnia. The second aim was to investigate whether a short period of hypercapnia induces detrimental effects in an otherwise undamaged rodent lung. METHODS Experiments were performed on 60 male Wistar rats. A moderate polymicrobial sepsis was induced by colon ascendens stent peritonitis (CASP) surgery. 24h after induction of sepsis volume-controlled and pressure-limited ventilation was established for 120 min, with either normocapnic (pCO2 35-45 mmHg) or moderate hypercapnic ventilation targets (pCO2 65-75 mmHg) and with or without non-selective K(+)ATP channel blockade with glibenclamide. Microcirculatory blood flow of the colonic wall as well as oxygen delivery and consumption were assessed with tissue laser Doppler and reflectance spectrophotometry. Hemodynamic variables were recorded and plasma cytokine levels and myeloperoxidase levels of the lungs were analyzed. RESULTS In septic animals microcirculatory oxygenation deteriorated progressively with normocapnia (-11.7 ± 11.8%) but was maintained (-2.9 ± 5.6%) with hypercapnia. This effect was associated with an increased microcirculatory oxygen consumption in septic animals with normocapnia (+25.7 ± 37.1%) that was decreased in the hypercapnia groups (-7.2 ± 28.1%). The effect of hypercapnia in septic animals was not altered by additional K(+)ATP channel blockade (-5.7 ± 32.7%). Hypercapnia neither induced an inflammatory response in lungs nor altered the systemic cytokine response. CONCLUSIONS The observed beneficial effect of hypercapnia on microvascular oxygenation of the colon in sepsis does not seem to be mediated via K(+)ATP channels.
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Affiliation(s)
- Christopher Beck
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Franziska Barthel
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Anna-Maria Hahn
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Christian Vollmer
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Anna Herminghaus
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Sabrina Schäfer
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Inge Bauer
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany
| | - Olaf Picker
- Department of Anaesthesiology, University Hospital Duesseldorf, Germany.
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17
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Abstract
Despite their small size and anucleate status, platelets have diverse roles in vascular biology. Not only are platelets the cellular mediator of thrombosis, but platelets are also immune cells that initiate and accelerate many vascular inflammatory conditions. Platelets are linked to the pathogenesis of inflammatory diseases such as atherosclerosis, malaria infection, transplant rejection, and rheumatoid arthritis. In some contexts, platelet immune functions are protective, whereas in others platelets contribute to adverse inflammatory outcomes. In this review, we will discuss platelet and platelet-derived mediator interactions with the innate and acquired arms of the immune system and platelet-vessel wall interactions that drive inflammatory disease. There have been many recent publications indicating both important protective and adverse roles for platelets in infectious disease. Because of this new accumulating data, and the fact that infectious disease continues to be a leading cause of death globally, we will also focus on new and emerging concepts related to platelet immune and inflammatory functions in the context of infectious disease.
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Corken A, Russell S, Dent J, Post SR, Ware J. Platelet glycoprotein Ib-IX as a regulator of systemic inflammation. Arterioscler Thromb Vasc Biol 2014; 34:996-1001. [PMID: 24504734 DOI: 10.1161/atvbaha.113.303113] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The platelet glycoprotein Ib-IX (GP Ib-IX) receptor is a well-characterized adhesion receptor supporting hemostasis and thrombosis via interactions with von Willebrand factor. We examine the GP Ib-IX/von Willebrand factor axis in murine polymicrobial sepsis, as modeled by cecal ligation and puncture (CLP). APPROACH AND RESULTS Genetic absence of the GP Ib-IX ligand, von Willebrand factor, prolongs survival after CLP, but absence of the receptor, GP Ib-IX, does not. Because absence of either von Willebrand factor or GP Ib-IX significantly impairs hemostasis and thrombosis, we sought to define additional GP Ib-IX-dependent pathways impacting survival in the CLP model. We document that the absence of GP Ib-IX leads to reduced platelet-neutrophil and platelet-monocyte interactions. Twenty-four hours after CLP, absence of GP Ib-IX coincides with an alteration in cytokine levels, such as tumor necrosis factor-α secreted by monocytes, and increased macrophage-1 antigen expression by neutrophils. CONCLUSIONS In contrast to the well-characterized proinflammatory properties of platelets, we describe in the CLP model an anti-inflammatory property associated with platelet GP Ib-IX. Thus, a single platelet receptor displays a dual modulatory role in both the thrombotic and inflammatory pathways associated with polymicrobial sepsis. In sharing leucine-rich motifs with toll-like receptors, platelet GP Ib-IX can be considered a multifunctional participant in hemostasis, thrombosis, and the inflammatory cascade. The results highlight a dynamic role for platelets in systemic inflammation and add to the complex pathophysiologic events that occur during the dysregulated coagulation and inflammation associated with sepsis.
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Affiliation(s)
- Adam Corken
- From the Departments of Physiology and Biophysics (A.C., S.R., J.D., J.W.) and Pathology (S.R.P.), University of Arkansas for Medical Sciences, Little Rock
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Maron-Gutierrez T, Silva JD, Cruz FF, Alegria S, Xisto DG, Assis EF, Castro-Faria-Neto HC, Dos Santos CC, Morales MM, Rocco PRM. Insult-dependent effect of bone marrow cell therapy on inflammatory response in a murine model of extrapulmonary acute respiratory distress syndrome. Stem Cell Res Ther 2013; 4:123. [PMID: 24406030 PMCID: PMC3856598 DOI: 10.1186/scrt334] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 10/03/2013] [Indexed: 02/08/2023] Open
Abstract
Introduction Administration of bone marrow-derived cells produces beneficial effects in experimental extrapulmonary acute respiratory distress syndrome (ARDS). However, there are controversies regarding the effects of timing of cell administration and initial insult severity on inflammatory response. We evaluated the effects of bone marrow-derived mononuclear cells (BMDMC) in two models of extrapulmonary ARDS once lung morphofunctional changes had already been installed. Methods BALB/c mice received lipopolysaccharide (LPS) intraperitoneally (5 mg/kg in 0.5 ml saline) or underwent cecal ligation and puncture (CLP). Control mice received saline intraperitoneally (0.5 ml) or underwent sham surgery. At 24 hours, groups were further randomized to receive saline or BMDMC (2 × 106) intravenously. Lung mechanics, histology, and humoral and cellular parameters of lung inflammation and remodeling were analyzed 1, 3 and 7 days after ARDS induction. Results BMDMC therapy led to improved survival in the CLP group, reduced lung elastance, alveolar collapse, tissue and bronchoalveolar lavage fluid cellularity, collagen fiber content, and interleukin-1β and increased chemokine (keratinocyte-derived chemokine and monocyte chemotactic protein-1) expression in lung tissue regardless of the experimental ARDS model. Intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 expression in lung tissue increased after cell therapy depending on the insult (LPS or CLP). Conclusions BMDMC therapy at day 1 successfully reduced lung inflammation and remodeling, thus contributing to improvement of lung mechanics in both extrapulmonary ARDS models. Nevertheless, the different inflammatory responses induced by LPS and CLP resulted in distinct effects of BMDMC therapy. These data may be useful in the clinical setting, as they suggest that the type of initial insult plays a key role in the outcome of treatment.
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Recknagel P, Gonnert FA, Halilbasic E, Gajda M, Jbeily N, Lupp A, Rubio I, Claus RA, Kortgen A, Trauner M, Singer M, Bauer M. Mechanisms and functional consequences of liver failure substantially differ between endotoxaemia and faecal peritonitis in rats. Liver Int 2013; 33:283-93. [PMID: 23146068 DOI: 10.1111/liv.12012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 08/27/2012] [Indexed: 02/13/2023]
Abstract
BACKGROUND Many of the concepts describing molecular mechanisms of sepsis-induced liver failure are derived from endotoxin models. However, the biological significance of such models is questionable as the complexity of clinical sepsis and associated organ failure is only partially replicated. AIMS Comparison of cytokine response, leucocyte recruitment, oxidative stress and markers of hepatic organ dysfunction in rat models of endotoxaemia or peritoneal contamination and infection (PCI). METHODS Endotoxemia and polymicrobial sepsis were induced in rats by intraperitoneal injection of lipopolysaccharide (LPS) or stool suspension, respectively. RESULTS Both insults produced clinical and laboratory signs of multiple organ dysfunction, including hepatic excretory dysfunction. However, TNF alpha, oxidative stress responses and the degree of cell death were significantly higher in endotoxaemia compared to PCI (e.g. serum TNF levels (pg/ml) at 1.5 h post-insult: sham 5 ± 1.4, LPS 1 mg/kg bw 2176.92 ± 373.78, sepsis below detection limit; P P < 0.05). Cholestasis was significantly more pronounced in polymicrobial sepsis whereas serum bilirubin in endotoxaemic animals did not differ from sham-operated controls (plasma levels of bilirubin (μmol/L) at 15 h after the insult: sham 7.1 ± 0.6, LPS 30 mg/kg 9.1 ± 0.6, sepsis 15.2 ± 1.3). CONCLUSIONS Polymicrobial sepsis produces profound hepatocellular dysfunction in the absence of traditional cytokine-mediated mechanisms of cellular injury. This questions the central role of cytokines and the ensuing oxidative stress as key molecular events in mediating liver dysfunction.
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Affiliation(s)
- Peter Recknagel
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
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Abstract
Observational and experimental studies continue to support the association of infection and infection-stimulated inflammation with development of cardiovascular disease (CVD) including atherosclerosis and thrombosis. Microvesicles (MV) are heterogeneous populations of sealed membrane-derived vesicles shed into circulation by activated mammalian cells and/or pathogenic microbes that may represent an interface between bacterial/microbial infection and increased risk of CVD. This review evaluates how MV act to modulate and intersect immunological and inflammatory responses to infection with particular attention to progression of CVD. Although infection-related stimuli provoke release of MV from blood and vascular cells, MV express phosphatidylserine and other procoagulant factors on their surface, which initiate and amplify blood coagulation. In addition, MV mediate cell-cell adhesion, which may stimulate production of pro-inflammatory cytokines in vascular cells, which in turn aggravate progression of CVD and propagate atherothrombosis. MV transfer membrane receptors, RNA and proteins among cells, and present auto-antigens from their cells of origin to proximal or remote target cells. Because MV harbor cell surface proteins and contain cytoplasmic components of the parent cell, they mediate biological messages and play a pivotal role in the crossroad between infection-stimulated inflammation and CVDs.
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McConnell KW, Coopersmith CM. Organ failure avoidance and mitigation strategies in surgery. Surg Clin North Am 2012; 92:307-19, ix. [PMID: 22414415 DOI: 10.1016/j.suc.2012.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Postoperative organ failure is a challenging disease process that is better prevented than treated. Providers should use close observation and clinical judgment, and checklists of best practices to minimize the risk of organ failure in their patients. The treatment of multiorgan dysfunction syndrome (MODS) generally remains supportive, outside of rapid initiation of source control (when appropriate) and targeted antibiotic therapy. More specific treatments may be developed as the complex pathophysiology of MODS is better understood and more homogenous patient populations are selected for study.
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Affiliation(s)
- Kevin W McConnell
- Acute and Critical Care Surgery, Emory University School of Medicine, Atlanta, GA 30322, USA
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Laboratory Diagnosis of Disseminated Intravascular Coagulation in Dogs and Cats: The Past, the Present, and the Future. Vet Clin North Am Small Anim Pract 2012; 42:189-202. [DOI: 10.1016/j.cvsm.2011.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Stokes KY, Granger DN. Platelets: a critical link between inflammation and microvascular dysfunction. J Physiol 2011; 590:1023-34. [PMID: 22183721 DOI: 10.1113/jphysiol.2011.225417] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Inflammation is an underlying feature of a variety of human diseases. An important manifestation of this pathophysiological response is microvascular dysfunction, which includes the activation of vascular endothelial cells, and circulating leucocytes and platelets. While endothelial cells and leucocytes are widely accepted as critical players in the microvascular alterations induced by inflammation, recent attention has focused on the modulatory role of platelets, which act both as effector and target cells in inflamed microvessels. Evidence is presented to demonstrate the capacity for 'cross-talk' between platelets and other cells (endothelial cells, leucocytes) that contribute to an inflammatory response, and to illustrate the pathophysiological consequences of these interactions of platelets with other cells within the microvasculature.
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Affiliation(s)
- Karen Y Stokes
- Department of Molecular & Cellular Physiology, LSU Health Sciences Centre-Shreveport, 1501 Kings Highway Shreveport, LA 71130-3932, USA.
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Bizzarro S, Nicu EA, van der Velden U, Laine ML, Loos BG. Association of serum immunoglobulin G (IgG) levels against two periodontal pathogens and prothrombotic state: a clinical pilot study. Thromb J 2010; 8:16. [PMID: 21050426 PMCID: PMC2989307 DOI: 10.1186/1477-9560-8-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Accepted: 11/04/2010] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Periodontitis is associated with cardiovascular diseases (CVD). In our previous studies a prothrombotic state has been observed in periodontitis, which contributes to the risk of CVD. The aim of this study was to investigate whether serum IgG levels against Aggregatibacter actinomycetemcomitans (Aa) and Porphyromonas gingivalis (Pg) in periodontitis were associated with a prothrombotic state. MATERIALS AND METHODS Patients with moderate (n = 38) and severe periodontitis (n = 30) and controls (n = 24) were recruited. We explored correlations between serum anti-Aa and anti-Pg IgG and plasma levels of markers of prothrombotic state (von Willebrand Factor [vWF], prothrombin fragment 1+2 [F1+2], plasminogen activator inhibitor-1 [PAI-1] and D-dimer). Multivariate analyses were performed considering several major potential contributing factors. RESULTS Periodontitis patients showed higher anti-Aa IgG (p = 0.015) than controls but not for Pg (p = 0.320). In periodontitis patients, body mass index and anti-Aa IgG showed a positive correlation with vWF (β = 0.297, p = 0.010 and β = 0.248, p = 0.033 respectively). CONCLUSIONS In periodontitis, infection with Aa together with other well accepted risk factors for CVD, may play a role in increasing the risk for prothrombotic state.
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Affiliation(s)
- Sergio Bizzarro
- Department of Periodontology, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije University, Amsterdam, The Netherlands.
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