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Cohen RT, Klings ES. Systemic Steroids and the Risk of Vasoocclusive Events in Patients with Sickle Cell Disease. Ann Am Thorac Soc 2023; 20:18-20. [PMID: 36166277 PMCID: PMC9819271 DOI: 10.1513/annalsats.202207-627ps] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/27/2022] [Indexed: 02/05/2023] Open
Affiliation(s)
- Robyn T. Cohen
- The Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts
- Pediatrics – Pulmonary and Allergy Clinic, Boston Medical Center, Boston, Massachusetts; and
- Center for Excellence in Sickle Cell Disease, Boston Medical Center/Boston University School of Medicine, Boston, Massachusetts
| | - Elizabeth S. Klings
- The Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts
- Center for Excellence in Sickle Cell Disease, Boston Medical Center/Boston University School of Medicine, Boston, Massachusetts
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2
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Ferreira de Matos C, Comont T, Castex MP, Lafaurie M, Walter O, Moulis G, Dion J, Cougoul P. Risk of vaso-occlusive episodes in patients with sickle cell disease exposed to systemic corticosteroids: a comprehensive review. Expert Rev Hematol 2022; 15:1045-1054. [PMID: 36412212 DOI: 10.1080/17474086.2022.2149488] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Sickle cell disease (SCD) is the most frequent inherited disorder in the world. It is caused by a single amino acid mutation on the beta-globin chain, which lead to red blood cell deformation, haemolysis, and chronic inflammation. Clinical consequences are vaso-occlusives crisis, acute chest syndrome, thrombosis, infection, and chronic endothelial injury. AREAS COVERED Corticosteroids are an old therapeutic class, that are inexpensive and widely available, which can be administered in different forms. Their adverse effects are numerous and well-known. This class could appear to be useful in SCD treatment due to its anti-inflammatory effect. Moreover, corticosteroids remain an essential therapeutic class for many indications, besides SCD. Although specific adverse effects of corticosteroids have been suspected in SCD patients for decades, recent papers has reported strong evidence of specific and severe adverse effects in this population. Based on a literature review, we will discuss pathophysiological considerations, consequences, and practical use of corticosteroids in SCD. EXPERT OPINION High corticosteroid doses, for any indication , induce vaso-occlusive crises, acute chest syndrome, and re-hospitalization in patients with SCD. There is no evidence of any benefits of corticosteroid use in the SCD acute events. Prevention by hydroxyurea and/or red blood cell transfusion or exchange should be discussed when corticosteroid use is indispensable.
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Affiliation(s)
| | - Thibault Comont
- Internal Medicine Department, Toulouse University Hospital, Toulouse, France
| | - Marie-Pierre Castex
- Pediatric Oncology Immunology Hematology Unit, Children's University Hospital - Toulouse University Hospital, Toulouse, France
| | - Margaux Lafaurie
- CIC 1436, Team Pharmacologie en Population, Cohortes, Biobanques (PEPSS), Toulouse, France.,Department of Clinical Pharmacology, Toulouse University Hospital, Toulouse, France
| | - Ondine Walter
- Internal Medicine Department, Toulouse University Hospital, Toulouse, France.,CIC 1436, Team Pharmacologie en Population, Cohortes, Biobanques (PEPSS), Toulouse, France
| | - Guillaume Moulis
- Internal Medicine Department, Toulouse University Hospital, Toulouse, France.,CIC 1436, Team Pharmacologie en Population, Cohortes, Biobanques (PEPSS), Toulouse, France
| | - Jérémie Dion
- Internal Medicine Department, Toulouse University Hospital, Toulouse, France
| | - Pierre Cougoul
- Internal Medicine Department, Toulouse University Hospital, Toulouse, France
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3
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Koehl JL, Koyfman A, Hayes BD, Long B. High risk and low prevalence diseases: Acute chest syndrome in sickle cell disease. Am J Emerg Med 2022; 58:235-244. [PMID: 35717760 DOI: 10.1016/j.ajem.2022.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 05/31/2022] [Accepted: 06/05/2022] [Indexed: 10/18/2022] Open
Abstract
INTRODUCTION Acute chest syndrome (ACS) in sickle cell disease (SCD) is a serious condition that carries with it a high rate of morbidity and mortality. OBJECTIVE This review highlights the pearls and pitfalls of ACS in SCD, including diagnosis and management in the emergency department (ED) based on current evidence. DISCUSSION ACS is defined by respiratory symptoms and/or fever and a new radiodensity on chest imaging in a patient with SCD. There are a variety of inciting causes, including infectious and non-infectious etiologies. Although ACS is more common in those with homozygous SCD, clinicians should consider ACS in all SCD patients, as ACS is a leading cause of death in SCD. Patients typically present with or develop respiratory symptoms including fever, cough, chest pain, and shortness of breath, which can progress to respiratory failure requiring mechanical ventilation in 20% of adult patients. However, the initial presentation can vary. While the first line imaging modality is classically chest radiograph, lung ultrasound has demonstrated promise. Further imaging to include computed tomography may be necessary. Management focuses on analgesia, oxygen supplementation, incentive spirometry, bronchodilators, rehydration, antibiotics, consideration for transfusion, and specialist consultation. Empiric antibiotics that cover atypical pathogens are necessary along with measures to increase oxygen-carrying capacity in those with hypoxemia such as simple transfusion or exchange transfusion. CONCLUSIONS An understanding of ACS can assist emergency clinicians in diagnosing and managing this potentially deadly disease.
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Affiliation(s)
- Jennifer L Koehl
- Department of Pharmacy, Massachusetts General Hospital, Boston, MA, USA.
| | - Alex Koyfman
- Department of Emergency Medicine, UT Southwestern, Dallas, TX, USA
| | - Bryan D Hayes
- Department of Emergency Medicine, Division of Medical Toxicology, Harvard Medical School, Boston, MA, USA
| | - Brit Long
- SAUSHEC, Department of Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, TX, USA.
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4
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Niazi MRK, Chukkalore D, Jahangir A, Sahra S, Macdougall K, Rehan M, Odaimi M. Management of acute chest syndrome in patients with sickle cell disease: a systematic review of randomized clinical trials. Expert Rev Hematol 2022; 15:547-558. [PMID: 35666654 DOI: 10.1080/17474086.2022.2085089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Acute chest syndrome (ACS) accounts for the highest mortality in Sickle cell disease patients. Early diagnosis and timely management of ACS results in better outcomes. However, the effectiveness of most treatment modalities for ACS management has not been established. AREAS COVERED To review the treatment modalities management protocols and highlight the effectiveness of each option a literature search was done. Randomized controlled trials that assessed the efficacy of different treatment modalities in ACS management in SCD patients were chosen and reviewed. EXPERT OPINION 11 randomized controlled trials were found that evaluated the efficacy of incentive spirometry, positive expiratory pressure device, intravenous dexamethasone, oral vs. intravenous morphine, inhaled nitric oxide, unfractionated heparin, and blood transfusion in the prevention or treatment of ACS. Although there are guidelines for ACS treatment, the available evidence is very limited to delineating the effectiveness of various interventions in ACS management. More high-quality studies and trials with a larger patient population can benefit this area to support the recommendations with stronger evidence.
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Affiliation(s)
- Muhammad Rafay Khan Niazi
- Department of Internal Medicine, Staten Island University Hospital/Northwell Health, New York, NY, USA
| | - Divya Chukkalore
- Department of Internal Medicine, Staten Island University Hospital/Northwell Health, New York, NY, USA
| | - Abdullah Jahangir
- Department of Internal Medicine, Staten Island University Hospital/Northwell Health, New York, NY, USA
| | - Syeda Sahra
- Department of Internal Medicine, Staten Island University Hospital/Northwell Health, New York, NY, USA
| | - Kira Macdougall
- Department of Hematology and Medical Oncology, Oklahoma University of Health and Science, Oklahoma, OK, USA
| | - Maryam Rehan
- Department of Hematology and Medical Oncology, Staten Island University Hospital/Northwell Health, New York, NY, USA
| | - Marcel Odaimi
- Department of Hematology and Medical Oncology, Staten Island University Hospital/Northwell Health, New York, NY, USA
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5
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Sharathkumar AA, Faustino EVS, Takemoto CM. How we approach thrombosis risk in children with COVID-19 infection and MIS-C. Pediatr Blood Cancer 2021; 68:e29049. [PMID: 33955167 PMCID: PMC8206673 DOI: 10.1002/pbc.29049] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/04/2021] [Accepted: 03/22/2021] [Indexed: 01/08/2023]
Abstract
Thrombosis within the microvasculature and medium to large vessels is a serious and common complication among critically ill individuals with coronavirus disease 2019 (COVID-19). While children are markedly less likely to develop severe disease than adults, they remain at risk for thrombosis during acute infection and with the post-acute inflammatory illness termed multisystem inflammatory syndrome in children. Significant knowledge deficits in understanding COVID-19-associated coagulopathy and thrombotic risk pose clinical challenges for pediatric providers who must incorporate expert opinion and personal experience to manage individual patients. We discuss clinical scenarios to provide framework for characterizing thrombosis risk and thromboprophylaxis in children with COVID-19.
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Affiliation(s)
- Anjali A. Sharathkumar
- Stead Family Department of Pediatrics, Carver College of MedicineUniversity of IowaIowa CityIowaUSA
| | - E. Vincent S. Faustino
- Section of Pediatric Critical Care Medicine, Department of PediatricsYale School of MedicineNew HavenConnecticutUSA
| | - Clifford M. Takemoto
- Division of Clinical HematologySt. Jude Children's Research HospitalMemphisTennesseeUSA
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6
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End points for sickle cell disease clinical trials: renal and cardiopulmonary, cure, and low-resource settings. Blood Adv 2020; 3:4002-4020. [PMID: 31809537 DOI: 10.1182/bloodadvances.2019000883] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/07/2019] [Indexed: 01/19/2023] Open
Abstract
To address the global burden of sickle cell disease and the need for novel therapies, the American Society of Hematology partnered with the US Food and Drug Administration to engage the work of 7 panels of clinicians, investigators, and patients to develop consensus recommendations for clinical trial end points. The panels conducted their work through literature reviews, assessment of available evidence, and expert judgment focusing on end points related to patient-reported outcome, pain (non-patient-reported outcomes), the brain, end-organ considerations, biomarkers, measurement of cure, and low-resource settings. This article presents the findings and recommendations of the end-organ considerations, measurement of cure, and low-resource settings panels as well as relevant findings and recommendations from the biomarkers panel.
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7
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Badaki-Makun O, Casella JF, Tackett S, Tao X, Chamberlain JM. Association of Antibiotic Choice With Hospital Length of Stay and Risk Factors for Readmission in Patients With Sickle Cell Disease and Acute Chest Syndrome: An Observational Cohort Study. Ann Emerg Med 2020; 76:S37-S45. [PMID: 32928460 DOI: 10.1016/j.annemergmed.2020.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
STUDY OBJECTIVE We determine the association between use of specific cephalosporins and macrolides and hospital length of stay in patients with sickle cell disease (SCD) who are admitted with acute chest syndrome, and determine treatment risk factors for acute chest syndrome-related 30-day readmission. METHODS Patients admitted to 48 US hospitals within the Pediatric Health Information System between January 2008 and December 2016 with associated International Classification of Diseases, Ninth Revision (ICD-9) or ICD-10 diagnoses of SCD and acute chest syndrome were included. Primary outcomes were hospital length of stay and acute chest syndrome-related and all-cause 30-day readmission. Data were analyzed with t tests, ANOVA, and bivariable and multivariable linear and logistic regressions. RESULTS In 21,126 visits (representing 8,856 patients), median age was 11.2 years (interquartile range 6.1 to 16.5 years), 53.5% were male patients, and 77.2% had hemoglobin SS genotype. Median length of stay was 4 days (interquartile range 2 to 6 days; mean 4.76 days [SD 4.62 days]). Ceftriaxone alone (length of stay 4.75 days [SD 4.66 days]; P<.001) or the combination of ceftriaxone and azithromycin (length of stay 4.84 days [SD 4.74 days]; P<.001) was associated with the shortest length of stay and a reduced risk of acute chest syndrome-related readmission (ceftriaxone odds ratio [OR] 0.31; 95% confidence interval [CI] 0.27 to 0.35; ceftriaxone+azithromycin OR 0.20; 95% CI 0.17 to 0.24). Albuterol (OR 0.97; 95% CI 0.96 to 0.98) and RBC transfusion (OR 0.60; 95% CI 0.43 to 0.83) were also associated with decreased rates of acute chest syndrome-related 30-day readmission. All-cause 30-day readmission rate was 16.7% (95% CI 16.2% to 17.3%). CONCLUSION Guideline-compliant therapy for acute chest syndrome could preferentially include ceftriaxone and azithromycin. All-cause 30-day readmission for acute chest syndrome is lower than that reported for all-cause readmissions for SCD and more consistent with rates of readmission for pneumonia in the general population.
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Affiliation(s)
- Oluwakemi Badaki-Makun
- Department of Pediatrics, Division of Pediatric Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD.
| | - James F Casella
- Department of Pediatrics, Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sean Tackett
- Biostatistics Epidemiology and Data Management Core, Johns Hopkins University School of Medicine Baltimore, MD; Division of General Internal Medicine, Johns Hopkins Bayview Medical Center, Baltimore, MD
| | - Xueting Tao
- Biostatistics Epidemiology and Data Management Core, Johns Hopkins University School of Medicine Baltimore, MD
| | - James M Chamberlain
- Department of Emergency Medicine and Trauma Services, Children's National Health System, Washington, DC
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8
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Almon P, Elenga N. How I Treat Acute Chest Syndrome in Asthmatic Children with Sickle Cell Disease. A Practical Review. Hemoglobin 2020; 44:307-310. [PMID: 32893706 DOI: 10.1080/03630269.2020.1814321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Asthma is associated with increased rate of acute chest syndrome (ACS), pain episodes and premature death. Differentiating between an acute asthma exacerbation and ACS is a challenge clinically as they can present with similar symptoms. Clinicians should be aware of symptoms of asthma or broncho spasm in any children with sickle cell disease, as adequate treatments are required. In this mini-review, we selected 16 clinical studies, published in English between 2004 and 2016, and reviewed all of the abstracts and references of the selected articles. We subsequently selected articles that were focused on asthma in children with sickle cell disease. Given the pathophysiological mechanisms of ACS and the association between asthma and sickle cell disease, the management approach of asthmatic children should be clarified. Bronchodilators should be used if there are clinical features suggestive of a history of asthma or evidence of acute broncho spasm. The indication for cortisone should be reassessed. This literature review failed to conclude on therapeutic modalities of ACS in asthmatic children with sickle cell disease. Only a well designed, multicenter adequately-powered randomized controlled study of each of them will allow assessing their real benefits and risks.
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Affiliation(s)
- Pascal Almon
- Centre de Référence Maladies Rares (CRMR), Maladies Constitutionnelles Rares du Globule Rouge et de l'Erythropoïèese (MCGRE), Antilles-Guyane, Centre Hospitalier Universitaire (CHU) Pointe-à-Pitre, Guadeloupe, Petites Antilles
| | - Narcisse Elenga
- Service de Médecine et Chirurgie Pédiatrique, Centre Hospitalier de Cayenne, Cayenne Cedex, Guyanne Française.,Site Constitutif de Cayenne, CRMR, MCGRE, Antilles-Guyane, Centre Hospitalier de Cayenne, Cayenne Cedex, Guyane Française
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9
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Abstract
Despite sickle cell disease (SCD) being the most common and severe inherited condition worldwide, therapeutic options are limited. To date, hydroxyurea remains the main treatment option in SCD. However, in the last decade the numbers of interventional clinical trials focussing on therapies for SCD have increased significantly. Many new drugs with various pharmacological targets have emerged and, although the majority have failed to show benefit in clinical trials, some have produced encouraging results. It seems probable that more drugs will soon become available for the treatment of SCD. Furthermore, promising clinical trials with improved outcomes have recently changed the perspective of curative therapies in SCD. Nevertheless, the application of novel therapeutic agents and potential curative treatments will most likely be limited to high-income countries and, thus, will remain unavailable for the majority of people with SCD in the foreseeable future.
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Affiliation(s)
- Amina Nardo-Marino
- Centre for Haemoglobinopathies, Department of Haematology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Valentine Brousse
- Sickle Cell Disease Reference Center, Department of General Pediatrics and Pediatric Infectious Diseases, Necker-Enfants Malades Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - David Rees
- Department of Haematological Medicine, King's College London, King's College Hospital, London, UK
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10
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Ruhl AP, Sadreameli SC, Allen JL, Bennett DP, Campbell AD, Coates TD, Diallo DA, Field JJ, Fiorino EK, Gladwin MT, Glassberg JA, Gordeuk VR, Graham LM, Greenough A, Howard J, Kato GJ, Knight-Madden J, Kopp BT, Koumbourlis AC, Lanzkron SM, Liem RI, Machado RF, Mehari A, Morris CR, Ogunlesi FO, Rosen CL, Smith-Whitley K, Tauber D, Terry N, Thein SL, Vichinsky E, Weir NA, Cohen RT. Identifying Clinical and Research Priorities in Sickle Cell Lung Disease. An Official American Thoracic Society Workshop Report. Ann Am Thorac Soc 2019; 16:e17-e32. [PMID: 31469310 PMCID: PMC6812163 DOI: 10.1513/annalsats.201906-433st] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background: Pulmonary complications of sickle cell disease (SCD) are diverse and encompass acute and chronic disease. The understanding of the natural history of pulmonary complications of SCD is limited, no specific therapies exist, and these complications are a primary cause of morbidity and mortality.Methods: We gathered a multidisciplinary group of pediatric and adult hematologists, pulmonologists, and emergency medicine physicians with expertise in SCD-related lung disease along with an SCD patient advocate for an American Thoracic Society-sponsored workshop to review the literature and identify key unanswered clinical and research questions. Participants were divided into four subcommittees on the basis of expertise: 1) acute chest syndrome, 2) lower airways disease and pulmonary function, 3) sleep-disordered breathing and hypoxia, and 4) pulmonary vascular complications of SCD. Before the workshop, a comprehensive literature review of each subtopic was conducted. Clinically important questions were developed after literature review and were finalized by group discussion and consensus.Results: Current knowledge is based on small, predominantly observational studies, few multicenter longitudinal studies, and even fewer high-quality interventional trials specifically targeting the pulmonary complications of SCD. Each subcommittee identified the three or four most important unanswered questions in their topic area for researchers to direct the next steps of clinical investigation.Conclusions: Important and clinically relevant questions regarding sickle cell lung disease remain unanswered. High-quality, multicenter, longitudinal studies and randomized clinical trials designed and implemented by teams of multidisciplinary clinician-investigators are needed to improve the care of individuals with SCD.
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11
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Telen MJ, Malik P, Vercellotti GM. Therapeutic strategies for sickle cell disease: towards a multi-agent approach. Nat Rev Drug Discov 2019; 18:139-158. [PMID: 30514970 PMCID: PMC6645400 DOI: 10.1038/s41573-018-0003-2] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
For over 100 years, clinicians and scientists have been unravelling the consequences of the A to T substitution in the β-globin gene that produces haemoglobin S, which leads to the systemic manifestations of sickle cell disease (SCD), including vaso-occlusion, anaemia, haemolysis, organ injury and pain. However, despite growing understanding of the mechanisms of haemoglobin S polymerization and its effects on red blood cells, only two therapies for SCD - hydroxyurea and L-glutamine - are approved by the US Food and Drug Administration. Moreover, these treatment options do not fully address the manifestations of SCD, which arise from a complex network of interdependent pathophysiological processes. In this article, we review efforts to develop new drugs targeting these processes, including agents that reactivate fetal haemoglobin, anti-sickling agents, anti-adhesion agents, modulators of ischaemia-reperfusion and oxidative stress, agents that counteract free haemoglobin and haem, anti-inflammatory agents, anti-thrombotic agents and anti-platelet agents. We also discuss gene therapy, which holds promise of a cure, although its widespread application is currently limited by technical challenges and the expense of treatment. We thus propose that developing systems-oriented multi-agent strategies on the basis of SCD pathophysiology is needed to improve the quality of life and survival of people with SCD.
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Affiliation(s)
- Marilyn J Telen
- Division of Hematology, Department of Medicine and Duke Comprehensive Sickle Cell Center, Duke University, Durham, NC, USA.
| | - Punam Malik
- Division of Experimental Hematology and Cancer Biology and the Division of Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Gregory M Vercellotti
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
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12
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Abstract
Introduction Sickle cell disease (SCD) is an orphan disease in the United States, but is highly prevalent worldwide. Only two drugs, hydroxyurea and L-glutamine, are approved for this disease. With an improved understanding of the pathophysiology of SCD as well as the success of several recently approved drugs for other orphan diseases, there is an increased interest in the development of drugs for SCD. Areas covered This review summarizes published studies of drug therapies and ongoing trials of novel agents. Expert opinion The development of drugs with different mechanisms of action offers opportunities for combination and individualized therapy in SCD. In addition to acute pain crisis, the evaluation of other SCD-related complications, exercise capacity, patient reported outcomes and validated surrogate endpoints are necessary to advance drug development. It is important to involve sites in sub-Saharan Africa and India, which have the highest burden of SCD, in trials of novel therapies.
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Affiliation(s)
- Kenneth I Ataga
- Division of Hematology/Oncology, University of North Carolina, Chapel Hill, NC
| | - Payal C Desai
- Division of Hematology/Oncology, University of North Carolina, Chapel Hill, NC.,#Division of Hematology, The Ohio State University, Columbus, OH
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13
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Almeida LEF, Damsker JM, Albani S, Afsar N, Kamimura S, Pratt D, Kleiner DE, Quezado M, Gordish-Dressman H, Quezado ZMN. The corticosteroid compounds prednisolone and vamorolone do not alter the nociception phenotype and exacerbate liver injury in sickle cell mice. Sci Rep 2018; 8:6081. [PMID: 29666400 PMCID: PMC5904156 DOI: 10.1038/s41598-018-24274-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 03/28/2018] [Indexed: 01/19/2023] Open
Abstract
Clinicians often hesitate prescribing corticosteroids to treat corticosteroid-responsive conditions in sickle cell disease (SCD) patients because their use can be associated with complications (increased hospital readmission, rebound pain, strokes, avascular necrosis, acute chest syndrome). Consequently, SCD patients may receive suboptimal treatment for corticosteroid-responsive conditions. We conducted a preclinical trial of dissociative (vamorolone) and conventional (prednisolone) corticosteroid compounds to evaluate their effects on nociception phenotype, inflammation, and organ dysfunction in SCD mice. Prednisolone and vamorolone had no significant effects on nociception phenotype or anemia in homozygous mice. Conversely, prednisolone and vamorolone significantly decreased white blood cell counts and hepatic inflammation. Interestingly, the effects of vamorolone were milder than those of prednisolone, as vamorolone yielded less attenuation of hepatic inflammation compared to prednisolone. Compared to controls and heterozygotes, homozygotes had significant liver necrosis, which was significantly exacerbated by prednisolone and vamorolone despite decreased hepatic inflammation. These hepatic histopathologic changes were associated with increases in transaminases and alkaline phosphatase. Together, these results suggest that, even in the setting of decreasing hepatic inflammation, prednisolone and vamorolone were associated with significant hepatic toxicity in SCD mice. These findings raise the possibility that hepatic function deterioration could occur with the use of corticosteroids (conventional and dissociative) in SCD.
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Affiliation(s)
- Luis E F Almeida
- Department of Perioperatice Medicine, National Institutes of Health Clinical Center, National Institutes of Health, Besthesda, MD, USA
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's Research Institute, Children's National Health System, Washington, DC, USA
| | | | - Sarah Albani
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's Research Institute, Children's National Health System, Washington, DC, USA
| | - Nina Afsar
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Besthesda, MD, USA
| | - Sayuri Kamimura
- Department of Perioperatice Medicine, National Institutes of Health Clinical Center, National Institutes of Health, Besthesda, MD, USA
| | - Drew Pratt
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Besthesda, MD, USA
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | - David E Kleiner
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Besthesda, MD, USA
| | - Martha Quezado
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Besthesda, MD, USA
| | - Heather Gordish-Dressman
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Health System, Department of Integrative Systems Biology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Zenaide M N Quezado
- Department of Perioperatice Medicine, National Institutes of Health Clinical Center, National Institutes of Health, Besthesda, MD, USA.
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's Research Institute, Children's National Health System, Washington, DC, USA.
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14
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De A, Manwani D, Rastogi D. Airway inflammation in sickle cell disease-A translational perspective. Pediatr Pulmonol 2018; 53:400-411. [PMID: 29314737 DOI: 10.1002/ppul.23932] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/29/2017] [Indexed: 12/14/2022]
Abstract
Asthma and sickle cell disease (SCD) are common chronic conditions in children of African ancestry that are characterized by cough, wheeze, and obstructive patterns on pulmonary function. Pulmonary function testing in children with SCD has estimated a prevalence of obstructive lung disease ranging from 13% to 57%, and airway hyper-responsiveness of up to 77%, independent of a diagnosis of asthma. Asthma co-existing with SCD is associated with increased risk of acute chest syndrome (ACS), respiratory symptoms, pain episodes, and death. However, there are inherent differences in the pathophysiology of SCD and asthma. While classic allergic asthma in the general population is associated with a T-helper 2 cell (Th-2 cells) pattern of cell inflammation, increased IgE levels and often positive allergy testing, inflammation in SCD is associated with different inflammatory pathways, involving neutrophilic and monocytic pathways, which have been explored to a limited extent in mouse models and with a dearth of human studies. The current review summarizes the existent literature on sickle cell related airway inflammation and its cross roads with allergic asthma-related inflammation, and discusses the importance of further elucidating and understanding these common and divergent inflammatory pathways in human studies to facilitate development of targeted therapy for children with SCD and pulmonary morbidity.
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Affiliation(s)
- Aliva De
- Division of Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
| | - Deepa Manwani
- Division of Hematology/Oncology, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
| | - Deepa Rastogi
- Division of Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
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15
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Glassberg J, Rahman AH, Zafar M, Cromwell C, Punzalan A, Badimon JJ, Aledort L. Application of phospho-CyTOF to characterize immune activation in patients with sickle cell disease in an ex vivo model of thrombosis. J Immunol Methods 2018; 453:11-19. [PMID: 28760671 PMCID: PMC7487207 DOI: 10.1016/j.jim.2017.07.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/06/2017] [Accepted: 07/21/2017] [Indexed: 12/21/2022]
Abstract
Sickle cell disease (SCD) is a genetic disease caused by mutations in the beta globin gene, and inflammation plays a key role in driving many aspects of disease pathology. Early immune activation is believed to be associated with hemodynamic stresses and thrombus formation as cells traffic through blood vessels. We applied an extracorporeal perfusion system to model these effects ex vivo, and combined this with a phospho-CyTOF workflow to comprehensively evaluate single-cell signatures of early activation across all major circulating immune subsets. These approaches showed immune activation following passage through the perfusion chamber, most notably in monocytes, which exhibited platelet aggregation and significantly elevated expression of multiple phospho-proteins. Overall, these studies outline a robust and broadly applicable workflow to leverage phospho-CyTOF to characterize immune activation in response to ex vivo or in vivo perturbations and may facilitate identification of novel therapeutic targets in SCD and other inflammatory diseases.
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Affiliation(s)
- Jeffrey Glassberg
- Department of Emergency Medicine, Icahn School of Medicine at Mount Sinai, 3 E. 101st St., New York, NY, USA.
| | - Adeeb H Rahman
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY, USA; Human Immune Monitoring Core, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY, USA; Department of Genetics and Genomic Sciences, The Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, NY, USA.
| | - Mohammad Zafar
- Department of Medicine, Cardiology, Icahn School of Medicine at Mount Sinai, 1428 Madison Avenue, New York, NY, USA.
| | - Caroline Cromwell
- Department of Medicine, Hematology and Oncology, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY, USA.
| | - Alexa Punzalan
- Department of Emergency Medicine, Icahn School of Medicine at Mount Sinai, 3 E. 101st St., New York, NY, USA.
| | - Juan Jose Badimon
- Department of Medicine, Cardiology, Icahn School of Medicine at Mount Sinai, 1428 Madison Avenue, New York, NY, USA.
| | - Louis Aledort
- Department of Medicine, Hematology and Oncology, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, NY, USA.
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16
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Patterson GD, Mashegu H, Rutherford J, Seals S, Josey D, Karlson C, McNaull M, May W, Carroll C, Barr FE, Majumdar S. Recurrent Acute Chest Syndrome in Pediatric Sickle Cell Disease: Clinical Features and Risk Factors. J Pediatr Hematol Oncol 2018; 40:51-55. [PMID: 29200151 PMCID: PMC10182404 DOI: 10.1097/mph.0000000000001012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Acute chest syndrome (ACS) is a common and serious lung complication in sickle cell disease. A retrospective medical chart review was performed over a 6-year period in all pediatric ACS patients to investigate whether factors during the initial hospitalization were associated with recurrent ACS episodes. There were 386 episodes of ACS: 149 had only 1 episode of ACS, and 76 had >1 episode of ACS; 172 (76.4%) had hemoglobin SS, and 39 (17.3%) had hemoglobin SC. The most common presenting features were fever (83%), pain (70%), and cough (61%), which changed with the number of ACS episodes. Children <4 years old were at greatest risk of recurrent ACS (P=0.018). In addition, history of asthma (adjusted incident rate ratio [IRR]=1.52; 95% confidence interval [CI], 1.22-1.98; P<0.0001), shortness of breath (IRR, 1.29; 95% CI, 1.02-1.62; P=0.033), and length of hospital stay (IRR, 1.04; 95% CI, 1.01-1.08; P=0.017) were significantly associated with prospective ACS events. Multiple episodes of ACS are common in sickle cell disease, and certain risk factors during the initial hospitalization are associated with recurrent ACS.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Frederick E Barr
- Division of Pediatric Critical Care, University of Mississippi Medical Center, Jackson, MS
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17
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Meurer WJ, Connor JT, Glassberg J. Simulation of various randomization strategies for a clinical trial in sickle cell disease. ACTA ACUST UNITED AC 2016; 21:241-7. [PMID: 26868369 DOI: 10.1080/10245332.2015.1101966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To use numerical simulation to evaluate various randomization strategies for a clinical trial in sickle cell disease (SCD). METHODS The Inhaled Mometasone to Promote Reduction in Vaso-occlusive Events trial* is a randomized, controlled, feasibility study of inhaled mometasone for individuals with SCD who do not have asthma. The target sample size is 45 patients and one goal is to limit imbalance with respect to two important covariates (1) hydroxyurea use and (2) historical emergency department (ED) utilization. We compared three methods of patient allocation (simple randomization, block randomization, and biased-coin adaptive randomization) using numerical simulation (10 000 trials). The primary outcome measure was the proportion of simulated trials with numerically apparent differences in the two covariates: hydroxyurea use (binary) and ED utilization (three-level ordinal). RESULTS Overall, only 1.6% of simulated trials had any covariate comparison with P < 0.3 across groups for simple randomization, and 0% for both the block and adaptive randomization. In trials where the total sample size was 45 patients, the block randomization strategy achieved the greatest balance because participants were deterministically assigned to the treatment arm that balanced covariates. The adaptive strategy achieved similar results without deterministic treatment assignments even when trials included only 45 patients. DISCUSSION Adaptive clinical trial designs have potential to mitigate some of the challenges that have hampered SCD trials. In small exploratory trials, even non-statistically significant differences in important covariates can threaten interpretability and external validity. CONCLUSION Adaptive randomization performed similarly to block randomization and offers advantages including better allocation concealment and less ability for investigators to predict the next assignment.
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Affiliation(s)
- William J Meurer
- a Departments of Emergency Medicine and Neurology , University of Michigan , Ann Arbor , MI , USA
| | - Jason T Connor
- b Berry Consultants , Austin , TX , USA.,c University of Central Florida College of Medicine , Orlando , FL , USA
| | - Jeffrey Glassberg
- d Departments of Emergency Medicine, Hematology and Medical Oncology , Icahn School of Medicine at Mount Sinai , New York , NY , USA
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18
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Owusu-Ansah A, Ihunnah CA, Walker AL, Ofori-Acquah SF. Inflammatory targets of therapy in sickle cell disease. Transl Res 2016; 167:281-97. [PMID: 26226206 PMCID: PMC4684475 DOI: 10.1016/j.trsl.2015.07.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 07/01/2015] [Accepted: 07/07/2015] [Indexed: 12/20/2022]
Abstract
Sickle cell disease (SCD) is a monogenic globin disorder characterized by the production of a structurally abnormal hemoglobin (Hb) variant Hb S, which causes severe hemolytic anemia, episodic painful vaso-occlusion, and ultimately end-organ damage. The primary disease pathophysiology is intracellular Hb S polymerization and consequent sickling of erythrocytes. It has become evident for more than several decades that a more complex disease process contributes to the myriad of clinical complications seen in patients with SCD with inflammation playing a central role. Drugs targeting specific inflammatory pathways therefore offer an attractive therapeutic strategy to ameliorate many of the clinical events in SCD. In addition, they are useful tools to dissect the molecular and cellular mechanisms that promote individual clinical events and for developing improved therapeutics to address more challenging clinical dilemmas such as refractoriness to opioids or hyperalgesia. Here, we discuss the prospect of targeting multiple inflammatory pathways implicated in the pathogenesis of SCD with a focus on new therapeutics, striving to link the actions of the anti-inflammatory agents to a defined pathobiology, and specific clinical manifestations of SCD. We also review the anti-inflammatory attributes and the cognate inflammatory targets of hydroxyurea, the only Food and Drug Administration-approved drug for SCD.
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Affiliation(s)
- Amma Owusu-Ansah
- Division of Hematology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA; Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA
| | - Chibueze A Ihunnah
- Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Aisha L Walker
- Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Solomon F Ofori-Acquah
- Division of Hematology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA; Center for Translational and International Hematology, Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA; Division of Pulmonary Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA.
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19
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Lebensburger JD, Hilliard LM, Pair LE, Oster R, Howard TH, Cutter GR. Systematic review of interventional sickle cell trials registered in ClinicalTrials.gov. Clin Trials 2015; 12:575-83. [PMID: 26085544 DOI: 10.1177/1740774515590811] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND/AIMS The registry ClinicalTrials.gov was created to provide investigators and patients an accessible database of relevant clinical trials. METHODS To understand the state of sickle cell disease clinical trials, a comprehensive review of all 174 "closed," "interventional" sickle cell trials registered at ClinicalTrials.gov was completed in January 2015. RESULTS The majority of registered sickle cell disease clinical trials listed an academic center as the primary sponsor and were an early phase trial. The primary outcome for sickle cell disease trials focused on pain (23%), bone marrow transplant (BMT) (13%), hydroxyurea (8%), iron overload (8%), and pulmonary hypertension (8%). A total of 52 trials were listed as terminated or withdrawn, including 25 (14% of all trials) terminated for failure to enroll participants. At the time of this review, only 19 trials uploaded results and 29 trials uploaded a manuscript in the ClinicalTrials.gov database. A systematic review of pubmed.gov revealed that only 35% of sickle cell studies completed prior to 2014 resulted in an identified manuscript. In comparison, of 80 thalassemia trials registered in ClinicalTrials.gov, four acknowledged failure to enroll participants as a reason for trial termination or withdrawal, and 48 trials (60%) completed prior to 2014 resulted in a currently identified manuscript. CONCLUSION ClinicalTrials.gov can be an important database for investigators and patients with sickle cell disease to understand the current available research trials. To enhance the validity of the website, investigators must update their trial results and upload trial manuscripts into the database. This study, for the first time, quantifies outcomes of sickle cell disease trials and provides support to the belief that barriers exist to successful completion, publication, and dissemination of sickle cell trial results.
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Affiliation(s)
- Jeffrey D Lebensburger
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lee M Hilliard
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lauren E Pair
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert Oster
- Division of Preventive Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Thomas H Howard
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL, USA
| | - Gary R Cutter
- Department of Biostatistics, The University of Alabama at Birmingham, Birmingham, AL, USA
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20
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Renella R. Age-dependent pathophysiology of acute chest syndrome in children with sickle cell disease. Am J Hematol 2015; 90:367-8. [PMID: 25683565 DOI: 10.1002/ajh.23975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 02/02/2023]
Affiliation(s)
- Raffaele Renella
- Pediatric Hematology-Oncology Unit, Department of Pediatrics; University Hospital of Lausanne; Switzerland
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21
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Howard J, Hart N, Roberts-Harewood M, Cummins M, Awogbade M, Davis B. Guideline on the management of acute chest syndrome in sickle cell disease. Br J Haematol 2015; 169:492-505. [PMID: 25824256 DOI: 10.1111/bjh.13348] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jo Howard
- Department of Haematology, Guy's and St Thomas' NHS Foundation Trust, London, UK
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22
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Field JJ, Nathan DG. Advances in sickle cell therapies in the hydroxyurea era. Mol Med 2014; 20 Suppl 1:S37-42. [PMID: 25549232 DOI: 10.2119/molmed.2014.00187] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 09/25/2014] [Indexed: 01/13/2023] Open
Abstract
In the hydroxyurea era, insights into mechanisms downstream of erythrocyte sickling have led to new therapeutic approaches for patients with sickle cell disease (SCD). Therapies have been developed that target vascular adhesion, inflammation and hemolysis, including innovative biologics directed against P-selectin and invariant natural killer T cells. Advances in hematopoietic stem cell transplant and gene therapy may also provide more opportunities for cures in the near future. Several clinical studies are underway to determine the safety and efficacy of these new treatments. Novel approaches to treat SCD are desperately needed, since current therapies are limited and rates of morbidity and mortality remain high.
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Affiliation(s)
- Joshua J Field
- Medical Sciences Institute, BloodCenter of Wisconsin, Milwaukee, Wisconsin, United States of America Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - David G Nathan
- Dana-Farber Cancer Institute, Boston, Massachusetts, United States of America Boston Children's Hospital, Boston, Massachusetts, United States of America Harvard Medical School, Boston, Massachusetts, United States of America
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23
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Badaki-Makun O, Scott JP, Panepinto JA, Casper C, Hillery C, Dean JM, Brousseau DC. Intravenous magnesium for pediatric sickle cell vaso-occlusive crisis: methodological issues of a randomized controlled trial. Pediatr Blood Cancer 2014; 61:1049-54. [PMID: 24443249 PMCID: PMC3995128 DOI: 10.1002/pbc.24925] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 12/11/2013] [Indexed: 11/10/2022]
Abstract
Multiple recent Sickle Cell Disease studies have been terminated due to poor enrollment. We developed methods to overcome past barriers and utilized these to study the efficacy and safety of intravenous magnesium for vaso-occlusive crisis (VOC). We describe the methods of the Intravenous Magnesium in Sickle Vaso-occlusive Crisis (MAGiC) trial and discuss methods used to overcome past barriers. MAGiC was a multi-center randomized double-blind placebo-controlled trial of intravenous magnesium versus normal saline for treatment of VOC. The study was a collaboration between Pediatric Hematologists and Emergency Physicians in the Pediatric Emergency Care Applied Research Network (PECARN). Eligible patients were randomized within 12 hours of receiving intravenous opioids in the Emergency Department (ED) and administered study medication every 8 hours. The primary outcome was hospital length of stay. Associated plasma studies elucidated magnesium's mechanism of action and the pathophysiology of VOC. Health-related quality of life was measured. Site-, protocol-, and patient-related barriers from prior studies were identified and addressed. Limited study staff availability, lack of collaboration with the ED, and difficulty obtaining consent were previously identified barriers. Leveraging PECARN resources, forging close collaborations between Sickle Cell Centers and EDs of participating sites, and approaching eligible patients for prior consent helped overcome these barriers. Participation in the PECARN network and establishment of collaborative arrangements between Sickle Cell Centers and their affiliated EDs are major innovative features of the MAGiC study that allowed improved subject capture. These methods could serve as a model for future studies of VOCs.
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Affiliation(s)
- Oluwakemi Badaki-Makun
- Children’s National Medical Center, Department of Pediatrics, Emergency Medicine and Trauma Center
| | - J. Paul Scott
- Medical College of Wisconsin, Department of Pediatrics, Hematology/Oncology/Bone Marrow Transplant
| | - Julie A. Panepinto
- Medical College of Wisconsin, Department of Pediatrics, Hematology/Oncology/Bone Marrow Transplant
| | - Charles Casper
- University of Utah School of Medicine, Department of Pediatrics
| | - Cheryl Hillery
- Medical College of Wisconsin, Department of Pediatrics, Hematology/Oncology/Bone Marrow Transplant
| | - J. Michael Dean
- University of Utah School of Medicine, Department of Pediatrics
| | - David C. Brousseau
- Medical College of Wisconsin, Department of Pediatrics, Emergency Medicine
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24
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Abstract
Acute chest syndrome(ACS) is the most common pulmonary complication of sickle cell disease (SCD), the second most common cause of hospitalization and the primary cause of death in patients with sickle cell disease. Its highest prevalence is in early childhood. The pathogenesis of ACS is unknown but many predisposing conditions and mechanisms have been implicated including infections, pulmonary fat embolism, asthma and ischemic reperfusion injury. These conditions are associated with inflammation and therefore, the use of corticosteroids has been advocated because of their anti-inflammatory properties. Although, significant benefits from their use have been shown, there is great reluctance in using them because of reports of serious adverse effects, such as readmission to the hospital due rebound pain crisis, stroke, renal infarction, coma and even death. The current article reviews the evidence in favor and against the use of corticosteroids in ACS. Emphasis is given on the potential benefits vs. risks among the different types of corticosteroids, the importance of the dosing regimen and the role of underlying co-morbidities.
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Affiliation(s)
- Folasade Ogunlesi
- Division of Pulmonary & Sleep Medicine, Children's National Medical Center/George Washington University, Washington DC
| | - Matthew M Heeney
- Division of Hematology/Oncology, Boston Children's Hospital /Harvard Medical School, Boston MA
| | - Anastassios C Koumbourlis
- Division of Pulmonary & Sleep Medicine, Children's National Medical Center/George Washington University, Washington DC.
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25
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Quinn CT. Sickle cell disease in childhood: from newborn screening through transition to adult medical care. Pediatr Clin North Am 2013; 60:1363-81. [PMID: 24237976 PMCID: PMC4262831 DOI: 10.1016/j.pcl.2013.09.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sickle cell disease (SCD) is the name for a group of related blood disorders caused by an abnormal hemoglobin molecule that polymerizes on deoxygenation. SCD affects the entire body, and the multisystem pathophysiology begins in infancy. Thanks to prognostic and therapeutic advancements, some forms of SCD-related morbidity are decreasing, such as overt stroke. Almost all children born with SCD in developed nations now live to adulthood, and lifelong multidisciplinary care is necessary. This article provides a broad overview of SCD in childhood, from newborn screening through transition to adult medical care.
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Affiliation(s)
- Charles T. Quinn
- Division of Hematology, Cincinnati Children’s Hospital Medical Center, MC 11027, 3333 Burnet Avenue, Cincinnati, OH 45229, USA,Department of Pediatrics, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45229, USA
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26
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Gomez E, Morris CR. Asthma management in sickle cell disease. BIOMED RESEARCH INTERNATIONAL 2013; 2013:604140. [PMID: 24324967 PMCID: PMC3842053 DOI: 10.1155/2013/604140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 09/05/2013] [Accepted: 09/13/2013] [Indexed: 01/19/2023]
Abstract
Asthma is a common comorbid factor in sickle cell disease (SCD). However, the incidence of asthma in SCD is much higher than expected compared to rates in the general population. Whether "asthma" in SCD is purely related to genetic and environmental factors or rather is the consequence of the underlying hemolytic and inflammatory state is a topic of recent debate. Regardless of the etiology, hypoxemia induced by bronchoconstriction and inflammation associated with asthma exacerbations will contribute to a cycle of sickling and subsequent complications of SCD. Recent studies confirm that asthma predisposes to complications of SCD such as pain crises, acute chest syndrome, and stroke and is associated with increased mortality. Early recognition and aggressive standard of care management of asthma may prevent serious pulmonary complications and reduce mortality. However, data regarding the management of asthma in SCD is very limited. Clinical trials are needed to evaluate the effectiveness of current asthma therapy in patients with SCD and coincident asthma, while mechanistic studies are needed to delineate the underlying pathophysiology.
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Affiliation(s)
- Esteban Gomez
- Department of Hematology-Oncology, Children's Hospital & Research Center Oakland, Oakland, CA 94609, USA
| | - Claudia R. Morris
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Emory University School of Medicine, 1645 Tullie Circle, NE, Atlanta, GA 30329, USA
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27
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Lebensburger JD, Sidonio RF, DeBaun MR, Safford MM, Howard TH, Scarinci IC. Exploring barriers and facilitators to clinical trial enrollment in the context of sickle cell anemia and hydroxyurea. Pediatr Blood Cancer 2013; 60:1333-7. [PMID: 23418000 PMCID: PMC5319435 DOI: 10.1002/pbc.24486] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 01/08/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND Several sickle cell clinical trials have closed due to inability to enroll patients. To limit the early cessation of a proposed clinical trial due to low accrual rates, we sought to better understand barriers and facilitators to enrolling parents of children with sickle cell anemia (SCD) into clinical trials. PROCEDURE Focus groups (n = 3) were conducted with parents/guardians (n = 14) who had not previously been recruited for a clinical trial and were not administering hydroxyurea to their children. RESULTS Three main themes related to barriers to clinical trial enrollment were identified during analysis of focus groups: general barriers to health related research (general mistrust of research studies, emotional and practical concerns), barriers to trial design (randomization), and barriers to hydroxyurea (long term unknown risks, cancer, myelosuppressive effects). Facilitators identified were need for more education, including request for peer education, and improved explanation of clinical trials or study rationale. CONCLUSION Engagement of parents/guardians of children with SCD in identifying barriers and facilitators to clinical trial enrollment may be critical to the development of strategies to enhance SCD trial completion.
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Affiliation(s)
- Jeffrey D. Lebensburger
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama,Correspondence to: Jeffrey D. Lebensburger, DO, 1600 7th Ave South, Lowder Building 512, Birmingham, AL 35233.
| | - Robert F. Sidonio
- Department of Pediatrics, Vanderbilt University, Nashville, Tennessee
| | - Michael R. DeBaun
- Department of Pediatrics, Vanderbilt University, Nashville, Tennessee
| | - Monika M. Safford
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Thomas H. Howard
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Isabel C. Scarinci
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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28
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Abstract
Abstract
Sickle cell disease and thalassemia have distinctly different mutations, but both share common complications from a chronic vasculopathy. In the past, fetal hemoglobin–modulating drugs have been the main focus of new therapy, but the increased understanding of the complex pathophysiology of these diseases has led to the development of novel agents targeting multiple pathways that cause vascular injury. This review explores the pathophysiology of hemoglobinopathies and novel drugs that have reached phase 1 and 2 clinical trials. Therapies that alter cellular adhesion to endothelium, inflammation, nitric oxide dysregulation, oxidative injury, altered iron metabolism, and hematopoiesis will be highlighted. To evaluate these therapies optimally, recommendations for improving clinical trial design in hemoglobinopathies are discussed.
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