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Djordjevic A, Jovicic V, Lazovic D, Terzic D, Gacic J, Petrovic M, Matejic A, Salovic B, Radovic I, Jesic-Petrovic T, Ristic A, Soldatovic I. Acquired von Willebrand syndrome and post-operative drainage: a comparison of patients with aortic stenosis versus coronary artery disease. Gen Thorac Cardiovasc Surg 2024; 72:512-518. [PMID: 38280130 DOI: 10.1007/s11748-023-02007-5] [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: 10/28/2023] [Accepted: 12/29/2023] [Indexed: 01/29/2024]
Abstract
OBJECTIVE Degenerative aortic stenosis and coronary artery disease are considered to be the most prevalent cardiovascular diseases in industrialized countries. This study aims to determine the change over time in von Willebrand factor antigen, von Willebrand factor activity, and factor VIII and where there is a correlation with total post-operative drainage. METHODS The single-center retrospective study included 203 consecutive patients (64.5% male), undergoing coronary artery bypass surgery between March 1, 2019 and June 30, 2020 at the University Clinical Center of Serbia in the Clinic for Cardiac Surgery in Belgrade, Serbia. All patients 18 years or older who presented with isolated, hemodynamically significant aortic stenosis were included. The control group consisted of patients who presented with only coronary artery disease. RESULTS Between patients with only coronary artery disease and patients with coronary artery diseases and aortic stenosis, there was a statistically significant difference between pre-op and 1-month post-op fibrinogen, factor VIII, von Willebrand factor antigen, and von Willebrand factor (p < 0.001), post-op drainage, with overall lower drainage in coronary artery disease patients, and consistent increase in von Willebrand factor antigen, von Willebrand factor activity, and Factor VIII post-operatively in patients with coronary artery diseases and aortic stenosis. CONCLUSION This study has shown that there is a correlation between von Willebrand factor antigen, von Willebrand factor activity and total drainage to the level of statistical significance in aortic stenosis patients and in the overall study population.
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Affiliation(s)
- Aleksandar Djordjevic
- Department of Cardiac Surgery, University of Clinical Center of Serbia, Belgrade, Serbia
| | - Vladimir Jovicic
- Department of Cardiac Surgery, University of Clinical Center of Serbia, Belgrade, Serbia
| | - Dejan Lazovic
- Department of Cardiac Surgery, University of Clinical Center of Serbia, Belgrade, Serbia
| | - Dusko Terzic
- Department of Cardiac Surgery, University of Clinical Center of Serbia, Belgrade, Serbia
| | - Jasna Gacic
- University Hospital Medical Center Bežanijska Kosa, Belgrade, Serbia
| | - Masa Petrovic
- Faculty of Medicine, University of Belgrade, dr Subotića Starijeg 8, 11000, Belgrade, Serbia.
- Institute for Cardiovascular Diseases "Dedinje", Belgrade, Serbia.
| | - Aleksandar Matejic
- Faculty of Medicine, University of Belgrade, dr Subotića Starijeg 8, 11000, Belgrade, Serbia
- Institute for Orthopedic Surgery "Banjica", Belgrade, Serbia
| | - Bojana Salovic
- Faculty of Medicine, University of Belgrade, dr Subotića Starijeg 8, 11000, Belgrade, Serbia
| | - Ivana Radovic
- Faculty of Medicine, University of Belgrade, dr Subotića Starijeg 8, 11000, Belgrade, Serbia
- Blood and Transfusion Institute of Serbia, Belgrade, Serbia
| | - Tanja Jesic-Petrovic
- Public Primary Health Care Center Doboj, Doboj, Republic of Srpska, Bosnia and Herzegovina
| | - Arsen Ristic
- Department of Cardiac Surgery, University of Clinical Center of Serbia, Belgrade, Serbia
| | - Ivan Soldatovic
- Faculty of Medicine, University of Belgrade, dr Subotića Starijeg 8, 11000, Belgrade, Serbia
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The Association of Oxidative and Antioxidant Potential with Cardiometabolic Risk Profile in the Group of 60- to 65-Year-Old Seniors from Central Poland. Antioxidants (Basel) 2022; 11:antiox11061065. [PMID: 35739962 PMCID: PMC9220010 DOI: 10.3390/antiox11061065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023] Open
Abstract
Pathogenesis of cardiovascular diseases is caused by, inter alia, oxidative stress. On the other hand, cardiovascular risk factors may cause redox imbalance. The pathological pathways between those components are to be determined. In the group comprised of 300 sex-matched subjects, we evaluated a number of cardiovascular risk factors: blood pressure, body mass, lipids, glucose, homocysteine, uric acid, von Willebrand factor (vWF), VCAM-1 and ICAM-1. The presence of cardiovascular diseases and drugs for their treatment were examined. Secondly, we assessed total antioxidative status (TAS), total oxidative status (TOS) and other markers of oxidative stress. TAS was inversely related to LDL cholesterol. TOS was positively associated with BMI and female sex, but negatively associated with the use of angiotensin II receptor antagonists. Plasma lipid peroxides concentration was positively related to ICAM-1 and presence of stroke, whereas platelet lipid peroxides were positively associated with vWF. Platelets proteins thiol groups were in a positive relationship with vWF, but in a negative relationship with uric acid and diagnosed lipid disorders. Both free thiol and amino groups were positively associated with plasma glucose. Platelets free amino groups were related to platelets count. Superoxide generation by blood platelets (both with and without homocysteine) was positively connected to glucose level. Among women, oxidative markers appear to be more related to glucose level, whereas among men they are related to body mass indices. TAS, TOS and oxidative markers are largely related to modifiable cardiovascular risk factors such as body mass, and intake of drugs such as angiotensin II receptor blockers. Plasma and platelet oxidation markers appear to be especially associated with glucose concentration. The presented analyses unanimously indicate strong connections between cardiovascular risk factors and redox potential and specify how cardiometabolic interventions may counter-balance oxidative stress.
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El Khoury M, Karam B, Tabet R, Lafferty JC, Snyder ST. Current Practice of Percutaneous Coronary Intervention in Patients With Coagulation Disorders. Cureus 2021; 13:e18284. [PMID: 34722061 PMCID: PMC8545607 DOI: 10.7759/cureus.18284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2021] [Indexed: 11/05/2022] Open
Abstract
Acute coronary artery disease represents the leading cause of death worldwide. Some studies have shown that coagulation disorders can play a protective role against ischemic heart disease, presumably due to hypocoagulable state and decrease thrombin formation. However, autopsy reports showed atherosclerotic lesions in some patients with hemophilia. Since the introduction of clotting factors and replacement therapies, the life expectancy of patients with coagulation disorders has increased significantly. As a result, the incidence of cardiovascular diseases became higher making their treatment more challenging. Door to balloon strategy applies in ST-elevation myocardial infarction (STEMI), and percutaneous coronary intervention should not be delayed. While in non-STEMI (NSTEMI) and unstable angina, a hematology consult is essential. Prophylactic coagulation factor replacement is crucial in these patients in order to avoid bleeding complications, but on the other hand, these factors were also associated with thrombotic complications. Historically, bare-metal stents were preferred over drug-eluting stents in view of the shorter duration of dual antiplatelets therapy (DAPT). Currently, some trials have demonstrated the safety of new-generation drug-eluting stents in patients with elevated bleeding risk, where DAPT use is limited to four weeks. The radial artery is the preferred access and was found to have less bleeding complications when compared to the femoral access. Anticoagulation with heparin is the safest in view of antidote availability and shorter half-life. Bivalirudin has also been used in some case reports, while GP2b3a inhibitors are usually avoided except in a high thrombus burden. Close peri procedural follow-up is important with patient education about symptoms of bleed. Carefully and individually tailored antithrombotic and factor replacement therapy is required to overcome these clinically challenging situations. Early screening for cardiovascular risk factors and considering early intervention and management might help to improve the general health status of this population and reduce morbidity.
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Affiliation(s)
- Michel El Khoury
- Internal Medicine, Staten Island University Hospital - Northwell Health, New York City, USA
| | - Boutros Karam
- Cardiovascular Medicine, Staten Island University Hospital - Northwell Health, Staten Island, USA
| | - Rabih Tabet
- Cardiovascular Medicine, Staten Island University Hospital - Northwell Health, Staten Island, USA
| | - James C Lafferty
- Cardiovascular Medicine, Staten Island University Hospital - Northwell Health, Staten Island, USA
| | - Stavros Thomas Snyder
- Cardiovascular Medicine, Staten Island University Hospital - Northwell Health, Staten Island, USA
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Jakimiuk E, Radwińska J, Woźny M, Pomianowski A, Brzuzan P, Wojtacha P, Obremski K, Zielonka Ł. The Influence of Zearalenone on Selected Hemostatic Parameters in Sexually Immature Gilts. Toxins (Basel) 2021; 13:625. [PMID: 34564628 PMCID: PMC8473075 DOI: 10.3390/toxins13090625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 11/18/2022] Open
Abstract
Vascular toxicity induced by xenobiotics is associated with dysfunctions or damage to endothelial cells, changes in vascular permeability or dysregulation of the vascular redox state. The aim of this study was to determine whether per os administration of zearalenone (ZEN) influences selected hemostatic parameters in prepubertal gilts. This study was performed on female gilts divided into a control group which received placebo and an experimental group which received ZEN at a dose of 5.0 µg·kg-1 b.w. × day-1. On days 14, 28 and 42, blood samples were collected from the animals for analyses of hematological, coagulation and fibrinolysis parameters, nitric oxide, von Willebrand factor antigen content and catalase activity. The results demonstrated that the treatment of gilts with ZEN at a dose below no observable adverse effect level did not affect the primary hemostasis and the blood coagulation cascade. However, ZEN could have temporarily affected the selected indicators of endothelial cell function (increase of von Willebrand factor, decrease of nitric oxide levels) and the oxidative status plasma (decrease of catalase activity) of the exposed gilts. In summary, these results suggest that the adaptive response to ZEN-exposure can induce a transient imbalance in the vascular system by acting on vascular endothelial cells.
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Affiliation(s)
- Ewa Jakimiuk
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (K.O.); (Ł.Z.)
| | - Justyna Radwińska
- Department of Internal Diseases with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-718 Olsztyn, Poland; (J.R.); (A.P.)
| | - Maciej Woźny
- Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland;
| | - Andrzej Pomianowski
- Department of Internal Diseases with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 14, 10-718 Olsztyn, Poland; (J.R.); (A.P.)
| | - Paweł Brzuzan
- Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, 10-709 Olsztyn, Poland;
| | - Paweł Wojtacha
- Department of Industrial and Food Microbiology, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Plac Cieszynski 1, 10-726 Olsztyn, Poland;
| | - Kazimierz Obremski
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (K.O.); (Ł.Z.)
| | - Łukasz Zielonka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13/29, 10-718 Olsztyn, Poland; (K.O.); (Ł.Z.)
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Fan M, Wang X, Peng X, Feng S, Zhao J, Liao L, Zhang Y, Hou Y, Liu J. Prognostic value of plasma von Willebrand factor levels in major adverse cardiovascular events: a systematic review and meta-analysis. BMC Cardiovasc Disord 2020; 20:72. [PMID: 32039706 PMCID: PMC7011353 DOI: 10.1186/s12872-020-01375-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 02/03/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prediction of major adverse cardiovascular events (MACEs) may offer great benefits for patients with coronary artery disease (CAD). Von Willebrand factor (vWF) is stored in endothelial cells and released into blood plasma upon vascular dysfunction. This meta-analysis was performed to evaluate the prognostic value of plasma vWF levels in CAD patients with MACEs. METHODS A total of 15 studies were included in this meta-analysis through the search in PubMed, Embase and CNKI. Data were collected from 960 patients who had MACEs after CAD and 3224 controls nested without the adverse events. The standard mean difference (SMD) and 95% confidence intervals (95% CI) were calculated using random-effects model. RESULTS The plasma vWF levels examined at 24 h and 48 h after admission were significantly higher in CAD patients with MACEs than those without. The pooled SMD among the MACEs group and the non-MACEs group was 0.55 (95% CI = 0.30-0.80, P < 0.0001) and 0.70 (95% CI = 0.27-1.13, P = 0.001), respectively. However, no significant difference was found in plasma vWF levels on admission between the two groups. CONCLUSION Plasma vWF level in CAD patients examined at 24 h and 48 h after admission might be an independent prognostic factor for MACE.
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Affiliation(s)
- Mengge Fan
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan, 250014, Shandong, China.,Graduate School, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Xia Wang
- School of Medicine, Shandong University, Jinan, China
| | - Xun Peng
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan, 250014, Shandong, China.,Graduate School, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Shuo Feng
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan, 250014, Shandong, China.,Graduate School, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Junyu Zhao
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Lin Liao
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yong Zhang
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yinglong Hou
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Ju Liu
- Laboratory of Microvascular Medicine, Medical Research Center, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, 16766 Jingshi Road, Jinan, 250014, Shandong, China.
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Topal FE, Karakaya Z, Akyol PY, Payza U, Çalışkan M, Topal F, Aksun S, Erdoğan S, Neşelioğlu S. ST elevasyonlu akut koroner sendromlu hastalarda artmış tiyol/disülfid oranı. CUKUROVA MEDICAL JOURNAL 2019. [DOI: 10.17826/cumj.527542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Patel R, Varghese JF, Singh RP, Yadav UC. Induction of endothelial dysfunction by oxidized low-density lipoproteins via downregulation of Erk-5/Mef2c/KLF2 signaling: Amelioration by fisetin. Biochimie 2019; 163:152-162. [DOI: 10.1016/j.biochi.2019.06.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 06/09/2019] [Indexed: 10/26/2022]
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Fall L, Brugniaux JV, Davis D, Marley CJ, Davies B, New KJ, McEneny J, Young IS, Bailey DM. Redox-regulation of haemostasis in hypoxic exercising humans: a randomised double-blind placebo-controlled antioxidant study. J Physiol 2018; 596:4879-4891. [PMID: 29989171 DOI: 10.1113/jp276414] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 07/04/2018] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS In vitro evidence has identified that coagulation is activated by increased oxidative stress, though the link and underlying mechanism in humans have yet to be established. We conducted the first randomised controlled trial in healthy participants to examine if oral antioxidant prophylaxis alters the haemostatic responses to hypoxia and exercise given their synergistic capacity to promote free radical formation. Systemic free radical formation was shown to increase during hypoxia and was further compounded by exercise, responses that were attenuated by antioxidant prophylaxis. In contrast, antioxidant prophylaxis increased thrombin generation at rest in normoxia, and this was normalised only in the face of prevailing oxidation. Collectively, these findings suggest that human free radical formation is an adaptive phenomenon that serves to maintain vascular haemostasis. ABSTRACT In vitro evidence suggests that blood coagulation is activated by increased oxidative stress although the link and underlying mechanism in humans have yet to be established. We conducted the first randomised controlled trial to examine if oral antioxidant prophylaxis alters the haemostatic responses to hypoxia and exercise. Healthy males were randomly assigned double-blind to either an antioxidant (n = 20) or placebo group (n = 16). The antioxidant group ingested two capsules/day that each contained 500 mg of l-ascorbic acid and 450 international units (IU) of dl-α-tocopherol acetate for 8 weeks. The placebo group ingested capsules of identical external appearance, taste and smell (cellulose). Both groups were subsequently exposed to acute hypoxia and maximal physical exercise with venous blood sampled pre-supplementation (normoxia), post-supplementation at rest (normoxia and hypoxia) and following maximal exercise (hypoxia). Systemic free radical formation (electron paramagnetic resonance spectroscopic detection of the ascorbate radical (A•- )) increased during hypoxia (15,152 ± 1193 AU vs. 14,076 ± 810 AU at rest, P < 0.05) and was further compounded by exercise (16,569 ± 1616 AU vs. rest, P < 0.05), responses that were attenuated by antioxidant prophylaxis. In contrast, antioxidant prophylaxis increased thrombin generation as measured by thrombin-antithrombin complex, at rest in normoxia (28.7 ± 6.4 vs. 4.3 ± 0.2 μg mL-1 pre-intervention, P < 0.05) and was restored but only in the face of prevailing oxidation. Collectively, these findings are the first to suggest that human free radical formation likely reflects an adaptive response that serves to maintain vascular haemostasis.
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Affiliation(s)
- Lewis Fall
- Neurovascular Research Laboratory, University of South Wales, Pontypridd, UK
| | | | - Danielle Davis
- Department of Sport Health and Nutrition, Leeds Trinity University, Leeds, UK
| | | | - Bruce Davies
- Neurovascular Research Laboratory, University of South Wales, Pontypridd, UK
| | - Karl J New
- Neurovascular Research Laboratory, University of South Wales, Pontypridd, UK
| | - Jane McEneny
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Ian S Young
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Damian M Bailey
- Neurovascular Research Laboratory, University of South Wales, Pontypridd, UK
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Fall L, New KJ, Evans KA, Bailey DM. Arterial hypoxaemia and its impact on coagulation: significance of altered redox homeostasis. J Clin Pathol 2015; 68:752-4. [DOI: 10.1136/jclinpath-2015-202952] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 05/20/2015] [Indexed: 11/04/2022]
Abstract
AimsArterial hypoxaemia stimulates free radical formation. Cellular studies suggest this may be implicated in coagulation activation though human evidence is lacking. To examine this, an observational study was designed to explore relationships between systemic oxidative stress and haemostatic responses in healthy participants exposed to inspiratory hypoxia.ResultsActivated partial thromboplastin time and international normalised ratio were measured as routine clinical biomarkers of coagulation and ascorbate free radical (A•−) as a direct global biomarker of free radical flux. Six hours of hypoxia activated coagulation, and increased formation of A•−, with inverse correlations observed against oxyhaemoglobin saturation.ConclusionsThis is the first study to address the link between free radical formation and coagulation in vivo. This ‘proof-of-concept’ study demonstrated functional associations between hypoxaemia and coagulation that may be subject to redox activation of the intrinsic pathway. Further studies are required to identify precisely which intrinsic factors are subject to redox activation.
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Bayat B, Tjahjono Y, Sydykov A, Werth S, Hippenstiel S, Weissmann N, Sachs UJ, Santoso S. Anti-human neutrophil antigen-3a induced transfusion-related acute lung injury in mice by direct disturbance of lung endothelial cells. Arterioscler Thromb Vasc Biol 2013; 33:2538-48. [PMID: 24008160 DOI: 10.1161/atvbaha.113.301206] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Antibodies against human neutrophil antigen-3a (HNA-3a) located on choline transporter-like protein 2 induce severe transfusion-related acute lung injury (TRALI). This study aims to identify the mechanism implicated in anti-HNA-3a-mediated TRALI. APPROACH AND RESULTS Our analysis shows that anti-HNA-3a recognizes 2 choline transporter-like protein 2 isoforms (P1 and P2) on human microvascular endothelial cells from lung blood vessels but reacts only with the P1 isoform on neutrophils. Direct treatment of HNA-3a-positive endothelial cells with anti-HNA-3a, but not with anti-HNA-3b, leads to reactive oxygen species production, increased albumin influx, and decreased endothelial resistance associated with the formation of actin stress filaments and loosening of junctional vascular endothelium-cadherin. In a novel in vivo mouse model, TRALI was documented by significant increase in lung water content, albumin concentration, and neutrophil numbers in the bronchoalveolar lavage on injection of human anti-HNA-3a in lipopolysaccharides-treated, as well as nontreated mice. Interestingly, although neutrophil depletion alleviated severity of lung injury, it failed to prevent TRALI in this model. Infusion of anti-HNA-3a F(ab')2 fragments caused moderate TRALI. Finally, mice lacking nicotinamide adenine dinucleotide phosphate oxidase (NOX2(y/-)) were protected from anti-HNA-3a-mediated TRALI. CONCLUSIONS These data demonstrate the initiation of endothelial barrier dysfunction in vitro and in vivo by direct binding of anti-HNA-3a on endothelial cells. It seems, however, that the presence of neutrophils aggravates barrier dysfunction. This novel mechanism of TRALI primarily mediated by endothelial cell dysfunction via choline transporter-like protein 2 may help to define new treatment strategies to decrease TRALI-related mortality.
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Affiliation(s)
- Behnaz Bayat
- From the Institute for Clinical Immunology and Transfusion Medicine, Justus Liebig University, Giessen, Germany (B.B., Y.T., S.W., U.J.S., S.S.); Department of Internal Medicine II/V, ECCPS, University of Giessen and Marburg Lung Center (UGMLC), Member of the DZL, Giessen, Germany (A.S., N.W.); and Department of Infectious Diseases and Respiratory Medicine of the Charité Medical University, Berlin, Germany (S.H.)
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Tiong WN, Fong AYY, Sim EUH, Chan HC, Ong TK, Chang BC, Sim KH. Increased serum levels of interleukin-6 and von Willenbrand Factor in early phase of acute coronary syndrome in a young and multiethnic Malaysian population. HEART ASIA 2012; 4:146-50. [DOI: 10.1136/heartasia-2012-010131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/12/2012] [Indexed: 12/22/2022]
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