scholarly journals Transfusion-related acute lung injury or acute chest syndrome of sickle cell disease? — A case report

2003 ◽  
Vol 50 (9) ◽  
pp. 895-899 ◽  
Author(s):  
Paul G. Firth ◽  
Yoshihiko Tsuruta ◽  
Yogish Kamath ◽  
Walter H. Dzik ◽  
Christopher S. Ogilvy ◽  
...  
Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 2113-2113 ◽  
Author(s):  
Samit Ghosh ◽  
Olufolake Adisa ◽  
Yu Yang ◽  
Fang Tan ◽  
Solomon F Ofori-Acquah

Abstract Abstract 2113 Sickle cell disease (SCD) is characterized by multiple exacerbating events that cause intravascular hemolysis. Heme released into the circulation is scavenged by multiple plasma proteins and delivered to the liver for degradation. Our recent data indicate that this process is impaired in SCD resulting in excess protein-free plasma heme (PFPH) that triggers a lethal form of acute lung injury (ALI) in mice. In this study, we tested the hypothesis that toll-like receptor 4 (TLR4) mediates heme-induced ALI. Wild-type and two TLR4 mutant strains (B6.B10ScN-Tlr4lps-del/JthJ and C3H/HeJ) were intravenously injected with a dose range of ferric heme (0–210 micromoles/kg) and respiratory function monitored using a pulse oximeter. Excess PFPH was associated with reductions in oxygen saturation (SpO2) and breath rate in the wild-type mice but not in the TLR4 variants. Lungs of heme-treated wild-type mice were congested, edematous, hemorrhagic, and had thickened alveolar walls, while no histological abnormalities were found in the TLR4 variants. All heme-treated wild-type mice succumbed within 2 hours, while all TLR4 variants survived. Transgenic mice expressing exclusively human sickle hemoglobin (SS) were intravenously injected with a small molecule TLR4 inhibitor (resatorvid/TAK-242), or a lipid vehicle prior to induction of lung injury with heme (35 micromoles/kg). TAK-242 preserved lung function in the majority of SS mice that failed to scavenge excess PFPH, while both SpO2 and breath rate deteriorated in vehicle treated mice. The unique response to heme by TAK-242 and vehicle-treated SS mice was supported by histological analysis and survival (TAK-242; 76.9% vehicle; 23.5%, n=13–17; log-rank survival test, p<0.01). We provide the first evidence that the interaction between heme and TLR4 can be pathological, specifically causing a lethal form of ALI. Our data on TAK-242, a phase II drug, offers an attractive option to explore TLR4 inhibition as a novel therapeutic strategy to limit progression of acute chest syndrome. Disclosures: Ofori-Acquah: Emory University: Patents & Royalties.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 13-13
Author(s):  
Oladipo Cole ◽  
Asia Filatov ◽  
Javed Khanni ◽  
Patricio Espinosa

Moyamoya disease, well described in literature, is a chronic cerebrovascular occlusive disorder. It is characterized by progressive stenosis/occlusion of the terminal portions of the internal carotid arteries (ICA) and the proximal portions of the middle cerebral arteries (MCA). Less frequently described is Moyamoya syndrome, the name given to radiographic findings consistent with Moyamoya disease, but with an identifiable cause. The diseases associated with Moyamoya Syndrome include Sickle Cell Disease (SCD), Thalassemias, and Down's Syndrome to name a few. Common complications of Moyamoya include both ischemic and hemorrhagic strokes. Upon literature review, Moyamoya syndrome caused by SCD is not well described. When it is, the discussion is centered around the pediatric patient population and surgical management. Our case report describes a 22-year-old African American female with SCD who initially presented with Acute Chest Syndrome. Her hospital course was complicated by development of overt debilitating neurologic deficits. Subsequently, she was found to have Moyamoya Syndrome on neuroimaging. She was successfully treated with medical management without any surgical intervention. This case highlights the necessity of thorough examination, differential diagnosis, imaging findings, and consideration of predisposing syndromes in the work-up for Moyamoya syndrome; especially individuals with Sickle Cell Disease. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3556-3556
Author(s):  
Ravi Vats ◽  
Egemen Tutuncuoglu ◽  
Jesus Tejero ◽  
Cheryl A Hillery ◽  
Mark T Gladwin ◽  
...  

Introduction: Acute chest syndrome (ACS) is a type of acute lung injury and among the primary reasons for mortality and morbidity among Sickle Cell Disease (SCD) patients. Although epidemiologic evidence suggests that vaso-occlusion in the lung may serve as an antecedent to ACS, the cellular, molecular and biophysical mechanism of ACS is incompletely understood. Our recent findings revealed that the lung vaso-occlusion is enabled by the entrapment of embolic neutrophil-platelet aggregates in the pulmonary arterioles of transgenic humanized SCD mice. Recent evidence also suggests a role for neutrophil extracellular traps (NETs) in ACS. NETs are web-like structures of decondensed nuclear DNA decorated with citrullinated-histones (H3-cit) and neutrophil granule proteins. Interestingly, circulating nucleosomes and NETs fragments are elevated in SCD patient blood and the levels correlate with onset of ACS, however, the molecular mechanism that promotes generation of circulating NETs and the role of circulating NETs in promoting ACS remains poorly understood. Materials and Methods: Townes knock-in humanized SS (hα/hα:βS/βS) and AS (hα/hα:βA/βS) mice were used as SCD and control mice, respectively. SS and AS mice were intravenously (IV) administered 10 µmole/kg Oxy-Hb followed by Sytox orange, FITC-dextran or fluorescent anti-mouse mAbs against Ly6G, CD49b, H3cit, and neutrophil elastase for in vivo visualization of extracellular DNA, blood vessels, neutrophils, platelets and NETs, respectively. Pulmonary microcirculation was monitored using multi-photon-excitation enabled quantitative fluorescence intravital lung microscopy (qFILM). Results and Discussion: IV Oxy-Hb triggered the occlusion of pulmonary arterioles by neutrophil-platelet aggregates leading to loss of pulmonary blood flow in SCD but not control mice. Surprisingly, pulmonary vaso-occlusion in SCD mice was accompanied by the arrival of circulating cell free DNA (CFD) and NETs fragments into the pulmonary circulation. The cell free DNA (CFD) and NETs fragments entered the lung through the arterial circulation suggesting that they originated outside of lung. These cell free DNA (CFD) and NETs fragments contributed to lung vaso-occlusion and injury by promoting neutrophil-platelet aggregation in the lung arterioles. Conclusion: These findings reveal for the first time that circulating cell free DNA (CFD) and NETs fragments originating outside of lung contribute to pathogenesis of ACS. Currently, experiments are underway to identify the innate immune pathways that promote circulating NETs dependent lung injury in SCD. Disclosures Gladwin: Globin Solutions, Inc: Patents & Royalties: Provisional patents for the use of recombinant neuroglobin and heme-based molecules as antidotes for CO poisoning; United Therapeutics: Patents & Royalties: Co-inventor on an NIH government patent for the use of nitrite salts in cardiovascular diseases ; Bayer Pharmaceuticals: Other: Co-investigator.


2021 ◽  
Vol 9 (8) ◽  
Author(s):  
Ibrahim Khamees ◽  
Waail Rozi ◽  
Mohamed A. Yassin

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 4854-4854
Author(s):  
Mira T Tanenbaum ◽  
Anna Shvygina ◽  
Vaishnavi Sridhar ◽  
Jennifer E. Vaughn ◽  
Mark Joseph

BACKGROUND: Acute chest syndrome (ACS) is a life-threatening complication of sickle cell disease (SCD). Despite being the leading cause of death in adult patients with SCD, current recommendations for treatment of ACS remain largely supportive, consisting of pain management, aggressive fluid resuscitation, respiratory support, and transfusion therapy. Despite these measures, it is not uncommon for patients to require intubation due to progression to acute respiratory distress syndrome (ARDS). Recently, there have been a number of case reports that have successfully utilized extracorporeal membrane oxygenation (ECMO) for the management of ACS in those patients who fail to respond to conventional therapy [Kuo et al., 2013, Sewaralthahab et al, 2018]. However, the use of ECMO in this patient population remains uncommon, and further evaluation of this intervention is needed. This case report details an unsuccessful attempt at the use of ECMO in the case of ARDS secondary to ACS, in an attempt to identify critical pitfalls. CASE REPORT: A 32-year-old African-American female with HbSS disease on hydroxyurea therapy was transferred from an outside hospital following 3 days of respiratory decompensation. Prior to arrival, patient coded once at the outside hospital and once on transfer. Veno-arterial ECMO was initiated with improving oxygen saturation and volume status with continuous renal replacement therapy. To maintain an ECMO-specific goal hemoglobin level of 10 g/dL, 1:1 manual exchange transfusions were performed due to an inability to access equipment for automated RBC exchange. Once stable enough for CT, patient was found to have gray-white inversion suggestive of irreversible severe brain damage. Following another 28 days of supportive care with no neurologic improvement, the family decided to withdraw care, and the patient expired. CONCLUSION: While unsuccessful, this patient's case revealed a need for defining parameters regarding the initiation of ECMO in SCD patients with severe ACS. A review of previously-published literature has shown that the use of ECMO for the management of ARDS in adults is more efficacious than conventional ventilation support [Peek et al., 2009]. In patients with SCD, this improvement in efficacy is not readily reproduced, likely due to unique challenges presented by the pathophysiology of the disease. Notably, patients with SCD face additional risks of venous thromboembolism and strokes while on prolonged bed rest due to a baseline prothrombotic state [Sewaralthahab et al., 2018]. A systematic review of available case reports is needed to develop a protocol for the management of severe ACS that takes SCD-specific risks into account. The present report also makes a case for the training of providers in the early recognition of severe ACS in SCD patients. SCD remains largely undertreated in the United States, likely due to a complex interplay of patient, physician, and institutional factors. Had this patient been transferred immediately to a facility better equipped to provide a higher level of care, her condition could have arguably taken a different course. Despite the aforementioned challenges, ECMO remains a feasible option for the management of severe ACS in patients with SCD, and efforts should be made to standardize current treatment protocols. REFERENCES: Kuo KW, Cornell TT, Shanley TP, Odetola FO, and Annich GM. The use of extracorporeal membrane oxygenation in pediatric patients with sickle cell disease. Perfusion. 2013 September; 28(5): 424-432. Peek GJ, Mugford M, Tiruvoipati R, Wilson A, Allen E, Thalanany M, et al. Efficacy and economic assessment of conventional ventilatory support versus extracorporeal membrane oxygenation for severe adult respiratory failure (CESAR): a multicentre randomised controlled trial. The Lancet. 2009 October; 374(9698): 1351-1363. Sewaralthahab SS, Menaker J, Law JY. Successful use of veno-venous extracorporeal membrane oxygenation in an adult patient with sickle cell anemia and severe acute chest syndrome. Hemoglobin. 2018 42(1): 65-67. Disclosures No relevant conflicts of interest to declare.


Author(s):  
Nergis Akay ◽  
Deniz Tugcu ◽  
Rumeysa Tuna ◽  
Suheyla Ocak ◽  
Serap Karaman ◽  
...  

2006 ◽  
Vol 291 (3) ◽  
pp. L457-L465 ◽  
Author(s):  
Lucia de Franceschi ◽  
Giorgio Malpeli ◽  
Aldo Scarpa ◽  
Anne Janin ◽  
Eva Maria Muchitsch ◽  
...  

Nitric oxide (NO) is a potential new therapeutic agent for sickle cell disease (SCD). We investigated the effects of NO donor on hypoxia-induced acute lung injury that occurs when transgenic sickle cell SAD mice are exposed to chronic hypoxia, a model for lung vasoocclusive sickle cell events. In wild-type and SAD mice, intraperitoneal injection of S-nitrosoalbumin (NO-Alb) produced no significant hematologic changes under room air conditions, whereas it induced mild temporary hypotension and inhibition of platelet aggregation. NO-Alb administration (300 mg/kg ip twice a day, equivalent to 7.5 μM NO) in wild-type and SAD mice exposed to 46 h of hypoxia (8% oxygen) followed by 2 h of normoxia resulted in 1) reduction of the hypoxia-induced increase in blood neutrophil count, 2) prevention of hypoxia-induced increased IL-6 and IL-1β levels in bronchoalveolar lavage, 3) reduction of the lung injury induced by hypoxia-reoxygenation, 4) prevention of thrombus formation, and 5) prevention of hypoxia-induced increase of lung matrix metalloproteinase-9 gene expression. These effects provide new insights into the possible use of NO-Alb in the treatment of acute lung injury in SCD.


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