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Moshi BN, Philipo EG, Kileo NF, Matobo J, Yondu E, Ikunda D, Kandonga D, Luhulla KM, Kilonzi M. Prevalence of Stroke in Individuals with Sickle Cell Disease Pre- and during Hydroxyurea Uses: A Descriptive Cross-Sectional Study in Tanzania. Adv Hematol 2024; 2024:7950925. [PMID: 38533292 PMCID: PMC10965277 DOI: 10.1155/2024/7950925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 03/28/2024] Open
Abstract
Sickle cell disease (SCD) is an inherited blood disorder that leads to a variety of complications, including stroke. The use of hydroxyurea (HU) is reported to lessen the frequency and burden of stroke in SCD patients. However, less is known about the prevalence of stroke in SCD patients pre- and during the use of HU in sub-Saharan African (SSA) countries. Therefore, the study assessed stroke prevalence before and during uses of hydroxyurea among SCD patients in Tanzania. A hospital-based descriptive cross-sectional study was conducted at the sickle cell clinics in Dar es Salaam, Tanzania, from April 2023 to May 2023. A total of 228 participants were recruited, and data on demographic and clinical characteristics, HU use, and history of stroke were collected using a checklist from the respective patients' medical records and verbal communication with the patients or caregivers. Data analysis was done using SPSS software version 25, and findings are summarized using frequency and percentages. Out of 228 enrolled SCD patients, 124 (54.4%) were females, 109 (47.8%) were aged between 6 and 12 years, 226 (99.1%) were not married, 181 (79.4%) had primary education, and 209 (95%) were unemployed. The prevalence of stroke pre-HU use was 28 (12.3%) and 6 (2.6%) after starting using HU. Out of 6 with stroke after starting using HU, 3 (50%) had a history of stroke pre-HU uses. The study showed that the prevalence of stroke among SCD patients is significantly reduced after HU use. The findings suggest the need for stakeholders to implement measures to ensure eligible SCD patients are kept on HU.
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Affiliation(s)
- Belinda Nestory Moshi
- School of Pharmacy, The Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania
| | - Erick G. Philipo
- School of Pharmacy, The Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania
| | - Nancy F. Kileo
- School of Diagnostic Medicine, The Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania
| | - Joseph Matobo
- Department of Pediatrics, The Muhimbili National Hospital, P.O. Box 65000, Dar es Salaam, Tanzania
| | - Emili Yondu
- School of Pharmacy, The Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania
| | - Dionis Ikunda
- School of Medicine and Dentistry, University of Dodoma, P. O. Box 395, Dodoma, Tanzania
| | - Daniel Kandonga
- Sickle Cell Programme, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania
| | - Koga M. Luhulla
- Department of Pediatrics, The Muhimbili National Hospital, P.O. Box 65000, Dar es Salaam, Tanzania
| | - Manase Kilonzi
- School of Pharmacy, The Muhimbili University of Health and Allied Sciences, P.O. Box 65013, Dar es Salaam, Tanzania
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2
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Zayed AM, Al-Muhaimeed S, Al-Otaibi T, Ali EM, Saleh R, Ancheta SJ, Al-Harbi F, Waheed KB, Albahli Y, Alghamdi H. Moyamoya Syndrome in Children With Sickle Cell Disease in Saudi Arabia: A Single-Center Experience. Cureus 2023; 15:e49039. [PMID: 38024048 PMCID: PMC10657488 DOI: 10.7759/cureus.49039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2023] [Indexed: 12/01/2023] Open
Abstract
Background Sickle cell disease (SCD) is relatively common in Saudi Arabia. Its neurologic complications such as stroke and Moyamoya syndrome (MMS) can be severe and devastating. Such complications can be minimized by modern investigative tools such as transcranial Doppler (TCD) ultrasound, which is unavailable in many high-risk places. Our aim is to investigate the prevalence and characteristics of these complications in children with SCD in our center where TCD is not available. Methods We conducted a retrospective record review of children with SCD admitted to the pediatric ward and visited the pediatric hematology outpatient clinic of King Fahad Military Medical Complex, Dhahran, Saudi Arabia, from January 2010 to December 2021. The target population was children aged six months to 14 years with SCD and a history of stroke or transient ischemic attacks (TIAs). Their magnetic resonance imaging/magnetic resonance angiography (MRI/MRA) of the brain radiographic features were reviewed. A descriptive analysis was used to summarize the demographic characteristics and clinical features of patients with and without MMS. Results Twenty-six children (out of 385 with sickle cell anemia, originating mainly from the southwestern and eastern provinces of Saudi Arabia) experienced an overt stroke with an overall prevalence of 6.7%. All patients with stroke were originally from the Southwestern province. Their genotype was SS, and the median age at the onset of the first stroke was six years (IQR: 5.5). The main presenting symptoms were seizures (57.7%), motor weakness (42.3%), headache (15.3%), cranial nerve palsies (11.5%), cognitive deficit (7.6%), and dysphasia (3.8%). The majority of strokes were ischemic (92.3%). MMS was detected in 61.5% and was seen at the onset of the first stroke in all patients with this MRA abnormality. Seven children with moyamoya (43.8%) had recurrent strokes. Conclusion In this study, the prevalence of overt stroke is 9% in children with SCD originating from the southwestern region of Saudi Arabia (26/286), and 61.5% of them (16/26) had MMS. It is absent in the children of Eastern origin (99 children). In places lacking TCD facilities, further studies are required to determine if MRA brain screenings of children with SCD may detect MMS before the onset of stroke and help start protective therapy.
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Affiliation(s)
- Abdalla M Zayed
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
| | | | - Turki Al-Otaibi
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
| | | | - Rashid Saleh
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
| | | | - Fahad Al-Harbi
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
| | | | - Yasir Albahli
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
| | - Hamid Alghamdi
- Pediatrics, King Fahad Military Medical Complex, Dhahran, SAU
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3
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Babeer G, Omran D, Bawahab N, Mohammed Hussain RW, Muthaffar O, Alzahrani F, Shafei JA. Prevalence and Risk Factors of Stroke Among Children With Sickle Cell Disease: A Retrospective Study at a Tertiary Care Center. Cureus 2023; 15:e41960. [PMID: 37588307 PMCID: PMC10427025 DOI: 10.7759/cureus.41960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2023] [Indexed: 08/18/2023] Open
Abstract
Background Sickle cell disease (SCD) is a common autosomal recessive inherited hemoglobin disorder in many countries. Neurological complications are among the most disabling complications in SCD. Stroke and cerebral vasculopathy can lead to further neurological insult. Ischemic insults, stroke, and silent infarcts are preventable causes of morbidity and mortality in SCD patients. Understanding the epidemiology and characteristics of such patients will help to prevent complications. Methodology This is a retrospective study conducted in a tertiary care center in Saudi Arabia. Cases of SCD admitted to the pediatric ward between the years 2019 to 2023 were included in the study. Demographic data, clinical diagnosis, and frequency of prior admissions were collected. Brain imaging results were reviewed and included. Furthermore, the study assessed common risk factors leading to developing a stroke in SCD pediatric patients. Risk factors and clinical outcomes after stroke were also included. Results Eighty-one patients were enrolled. The mean age of stroke patients was 8.21±3.50 years while the mean age of non-stroke patients was 6.24±3.76 years. More than half of the patients were females in both the stroke (61.50%) and non-stroke groups (52.90%). Thirteen SCD patients (16%) were diagnosed with stroke. Previous history of stroke, high mean corpuscular volume (MCV), and low red blood cells count (RBC) were statistically significant risk factors for stroke (p<0.0001), (p<0.0001), (p<0.03), respectively. Conclusion Stroke is one of the most devastating complications of SCD. The prevalence of stroke among SCD patients in our study was 16%. Transcranial Doppler ultrasound screening is the most important predictor of stroke.
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Affiliation(s)
- Ghidaa Babeer
- Adult Neurology, King Abdulaziz University Hospital, Jeddah, SAU
| | - Danah Omran
- Radiology, King Faisal Specialist Hospital and Research Centre, Jeddah, SAU
| | - Noor Bawahab
- Pediatrics, King Abdulaziz University Hospital, Jeddah, SAU
| | | | - Osama Muthaffar
- Pediatrics, King Abdulaziz University Faculty of Medicine, Jeddah, SAU
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4
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Abreu VS, Xavier S, Santos M, Lopes da Silva R, Kjöllerström P, Conceição C. The sick(le) brain and spine: neuroimaging findings in paediatric patients with sickle cell disease. Clin Radiol 2023:S0009-9260(23)00081-8. [PMID: 36935257 DOI: 10.1016/j.crad.2023.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 03/08/2023]
Abstract
Sickle cell disease (SCD) is an autosomal recessive haemoglobinopathy, which manifests as multisystem ischaemia and infarction, as well as haemolytic anaemia. The morphological changes of red blood cells (RBCs) that promote ischaemia/infarction as the main multi-systemic manifestation, with associated vasculopathy, may also lead to haemorrhage and fat embolisation. Bone infarctions, whether of the skull or spine, are relatively common with subsequent increased infectious susceptibility. We present a broad spectrum of brain and spine imaging findings of SCD from a level III paediatric hospital in Lisbon, between 2010 and 2022. Our aim is to highlight brain and spine imaging findings from a serial review of multiple patients with SCD and respective neuroimaging characterisation.
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Affiliation(s)
- V Sousa Abreu
- Neuroradiology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.
| | - S Xavier
- Neuroradiology Department, Hospital de Braga, Braga, Portugal
| | - M Santos
- Neuroradiology Department, Hospital de Braga, Braga, Portugal
| | - R Lopes da Silva
- Paediatric Neurology Unit, Hospital Dona Estefânia, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal
| | - P Kjöllerström
- Paediatric Hematology Unit, Hospital Dona Estefânia, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal
| | - C Conceição
- Neuroradiology Department, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal
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5
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Imaging of Suspected Stroke in Children, From the AJR Special Series on Emergency Radiology. AJR Am J Roentgenol 2023; 220:330-342. [PMID: 36043606 DOI: 10.2214/ajr.22.27816] [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: 01/19/2023]
Abstract
Pediatric stroke encompasses different causes, clinical presentations, and associated conditions across ages. Although it is relatively uncommon, pediatric stroke presents with poor short- and long-term outcomes in many cases. Because of a wide range of overlapping presenting symptoms between pediatric stroke and other more common conditions, such as migraine and seizures, stroke diagnosis can be challenging or delayed in children. When combined with a comprehensive medical history and physical examination, neuroimaging plays a crucial role in diagnosing stroke and differentiating stroke mimics. This review highlights the current neuroimaging workup for diagnosing pediatric stroke in the emergency department, describes advantages and disadvantages of different imaging modalities, highlights disorders that predispose children to infarct or hemorrhage, and presents an overview of stroke mimics. Key differences in the initial approach to suspected stroke between children and adults are also discussed.
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6
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Light J, Boucher M, Baskin-Miller J, Winstead M. Managing the Cerebrovascular Complications of Sickle Cell Disease: Current Perspectives. J Blood Med 2023; 14:279-293. [PMID: 37082003 PMCID: PMC10112470 DOI: 10.2147/jbm.s383472] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/31/2023] [Indexed: 04/22/2023] Open
Abstract
The importance of protecting brain function for people with sickle cell disease (SCD) cannot be overstated. SCD is associated with multiple cerebrovascular complications that threaten neurocognitive function and life. Without screening and preventive management, 11% of children at 24% of adults with SCD have ischemic or hemorrhagic strokes. Stroke screening in children with SCD is well-established using transcranial Doppler ultrasound (TCD). TCD velocities above 200 cm/s significantly increase the risk of stroke, which can be prevented using chronic red blood cell (RBC) transfusion. RBC transfusion is also the cornerstone of acute stroke management and secondary stroke prevention. Chronic transfusion requires long-term management of complications like iron overload. Hydroxyurea can replace chronic transfusions for primary stroke prevention in a select group of patients or in populations where chronic transfusions are not feasible. Silent cerebral infarction (SCI) is even more common than stroke, affecting 39% of children and more than 50% of adults with SCD; management of SCI is individualized and includes careful neurocognitive evaluation. Hematopoietic stem cell transplant prevents cerebrovascular complications, despite the short- and long-term risks. Newer disease-modifying agents like voxelotor and crizanlizumab, as well as gene therapy, may treat cerebrovascular complications, but these approaches are investigational.
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Affiliation(s)
- Jennifer Light
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Maria Boucher
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jacquelyn Baskin-Miller
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Mike Winstead
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Correspondence: Mike Winstead, Division of Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, 101 Manning Drive, Chapel Hill, NC, USA, Tel +1 919-966-1178, Fax +1 919-966-7629, Email
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7
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Muacevic A, Adler JR, Chauhan R, Muthu J. Moyamoya Syndrome (MMS) in a Patient With Sickle Cell Disease (SCD) and Protein S Deficiency. Cureus 2023; 15:e34314. [PMID: 36860230 PMCID: PMC9970684 DOI: 10.7759/cureus.34314] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2023] [Indexed: 01/30/2023] Open
Abstract
The association between Moyamoya syndrome (MMS) and sickle cell disease (SCD) has been well-established in pediatric populations; however, limited literature exists documenting the characteristics and management of MMS in adult SCD patients. Studies have indicated the role of endovascular management in secondary stroke prevention for pediatric populations, with no current guidelines available for adult populations. Here, we describe a unique case of MMS in a 30-year-old patient with SCD and incidental protein S deficiency. Our unique case highlights a patient at high risk for neurosurgical intervention due to her hypercoagulable state who has benefitted from medical management. We also discuss current literature for the prevention of secondary cerebral vascular events and the role of further studies involving adult populations with MMS and SCD.
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8
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Thurn S, Kleinschmidt K, Kovacic I, Wendl C, Linker RA, Corbacioglu S, Schlachetzki F. Transcranial Doppler sonography and the effect of haematopoietic stem cell transplantation in sickle cell disease. Neurol Res Pract 2022; 4:12. [PMID: 35369878 PMCID: PMC8978343 DOI: 10.1186/s42466-022-00175-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 02/18/2022] [Indexed: 11/21/2022] Open
Abstract
Background Sickle cell disease (SCD) is one of the most prevalent monogenetic diseases worldwide and one of the most serious complications is stroke. Transcranial Doppler (TCD) demonstrated to be highly predictive for an imminent stroke by measuring blood flow velocities in the basal cerebral arteries. Currently, the only curative therapy for SCD is hematopoietic stem cell transplantation (HSCT). The aim of this study is to verify the correlation between blood flow velocities and stroke including the effect of HSCT.
Methods In our retrospective single-center study a total of 26 sickle cell patients (HbSS, HbSß+-thalassemia, HbSSα-thalassemia minima, HbSSα-thalassemia minor and HbSC) were analyzed between 2010 and 2016. The highest time averaged maximum mean blood flow velocity (TAMMV) measured was documented and evaluated with respect to SCD genotype and effect of HSCT. Acute and symptomatic as well as silent strokes were recorded as separate parameters.
Results In our study, ten patients had normal blood flow velocities before HSCT (six HbSS and four HbSß+-thalassemia patients) and 13 patients presented with abnormal TCD (eight HbSS, three HbSSα-thalassemia minima, one HbSSα-thalassemia minor and one HbSC). Thirteen of 26 study participants (ten HbSS and three HbSß+-thalassemia patients) received HSCT. In two patients, TAMMV in basal cerebral arteries remained “normal”, in one they remained conditional and in one TAMMV was reduced to normal. Four of 26 study participants (15.4%), including all patients with HbSS genotype, presented with a stroke, but none had “abnormal” TAMMV with TCD performed after the onset of stroke in each case. At the time we performed the TCD, the patients had already suffered the stroke. Conclusion In our study, none of the patients with stroke displayed abnormal blood flow velocities in TCD. Yet, HSCT at this stage of the disease still had a positive effect on TAMMV. Further studies are needed whether this effect converts into reduced stroke risk at all or only selected SCD patients undergoing HSCT.
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Affiliation(s)
- Sylvia Thurn
- Institute of Diagnostic Radiology, University Medical Center Regensburg, Regensburg, Germany
| | - Katharina Kleinschmidt
- Department of Paediatric Haematology, Oncology and Stem Cell Transplantation, University Medical Center Regensburg, Regensburg, Germany
| | - Irena Kovacic
- Department of Neurology, University of Regensburg, Bezirksklinikum Regensburg, Regensburg, Germany.,Department of Neurology, University Medical Center Regensburg, Regensburg, Germany
| | - Christina Wendl
- Center for Neuroradiology, Bezirksklinikum Regensburg and University Medical Center Regensburg, Regensburg, Germany
| | - Ralf A Linker
- Department of Neurology, University of Regensburg, Bezirksklinikum Regensburg, Regensburg, Germany.,Department of Neurology, University Medical Center Regensburg, Regensburg, Germany
| | - Selim Corbacioglu
- Department of Paediatric Haematology, Oncology and Stem Cell Transplantation, University Medical Center Regensburg, Regensburg, Germany
| | - Felix Schlachetzki
- Department of Neurology, University of Regensburg, Bezirksklinikum Regensburg, Regensburg, Germany. .,Department of Neurology, University Medical Center Regensburg, Regensburg, Germany.
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9
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Venugopal J, Wang J, Mawri J, Guo C, Eitzman D. Interleukin-1 receptor inhibition reduces stroke size in a murine model of sickle cell disease. Haematologica 2021; 106:2469-2477. [PMID: 32817286 PMCID: PMC8409048 DOI: 10.3324/haematol.2020.252395] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Indexed: 12/22/2022] Open
Abstract
Sickle cell disease (SCD) is associated with chronic hemolytic anemia and a heightened inflammatory state. The causal role of inflammatory pathways in stroke associated with SCD is unclear. Therefore, the hypothesis that deletion of the non-hematopoietic interleukin-1 receptor (IL-1R) pool may be beneficial in SCD was pursued. Since potential deleterious effects of IL-1R signaling in SCD could be mediated via downstream production of interleukin-6 (IL-6), the role of the nonhematopoietic IL-6 pool was also addressed. Bone marrow transplantation (BMT) from SCD to wild-type (WT) recipient mice was used to generate SCD mice (Wt,SCDbmt). In order to generate mice with nonhematopoietic deficiency of IL-1R or IL-6, SCD marrow was transplanted into IL-1R deficient (IL1R-/-,SCDbmt) or IL-6 deficient recipients (IL6-/-, SCDbmt). Blood counts, reticulocytes, soluble E-selectin (sEsel), and IL-6 levels were analyzed 14-15 weeks post-BMT. Ischemic stroke was induced by middle cerebral artery (MCA) photothrombosis at 16 weeks post-BMT. A separate group of Wt,SCDbmt mice was given the IL-1R inhibitor, anakinra, following stroke induction. Seventy-two hours after MCA occlusion, stroke volume was assessed by staining brain sections with 2,3,5-triphenyltetrazolium chloride. Formalin-fixed brain sections were also stained for macrophages with MAC3, for endothelial activation with ICAM-1, and for loss of blood brain barrier integrity with fibrin (ogen) staining. All SCD mice generated by BMT were anemic and the severity of anemia was not different between Wt,SCDbmt, IL1R-/-,SCDbmt, and IL-6-/-,SCDbmt mice. Three days following MCA occlusion, stroke volume was significantly reduced in IL1R-/-,SCDbmt mice compared to Wt,SCDbmt mice and IL6-/-,SCDbmt mice. Plasma levels of sEsel were lower in IL1R-/-,SCDbmt compared to Wt,SCDbmt and IL-6-/-,SCDbmt mice. Post-stroke treatment of Wt,SCDbmt mice with anakinra decreased stroke size, leukocyte infiltration, ICAM-1 expression, and fibrin(ogen) accumulation compared to vehicle-treated mice. Deficiency of non-hematopoietic IL-1R or treatment with an IL-1R antagonist is sufficient to confer protection against the increased stroke size associated with SCD. These effects of IL1R deficiency are associated with reduced endothelial activation, leukocyte infiltration, and blood brain barrier disruption, and are independent of non-hematopoietic IL-6 signaling.
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Affiliation(s)
- Jessica Venugopal
- University of Michigan Internal Medicine - Cardiology division, Ann Arbor, MI, USA
| | - Jintao Wang
- University of Michigan Internal Medicine - Cardiology division, Ann Arbor, MI, USA
| | | | - Chiao Guo
- University of Michigan Internal Medicine - Cardiology division, Ann Arbor, MI, USA
| | - Daniel Eitzman
- University of Michigan Internal Medicine - Cardiology division, Ann Arbor, MI, USA
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10
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Champlin G, Hwang SN, Heitzer A, Ding J, Jacola L, Estepp JH, Wang W, Ataga KI, Owens CL, Newman J, King AA, Davis R, Kang G, Hankins JS. Progression of central nervous system disease from pediatric to young adulthood in sickle cell anemia. Exp Biol Med (Maywood) 2021; 246:2473-2479. [PMID: 34407676 DOI: 10.1177/15353702211035778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Silent cerebral infarcts and arteriopathy are common and progressive in individuals with sickle cell anemia. However, most data describing brain lesions in sickle cell anemia are cross-sectional or derive from pediatric cohorts with short follow-up. We investigated the progression of silent cerebral infarct and cerebral vessel stenosis on brain MRI and MRA, respectively, by describing the incidence of new or worsening lesions over a period of up to 25 years among young adults with sickle cell anemia and explored risk factors for progression. Forty-four adults with sickle cell anemia (HbSS or HbSβ0thalassemia), exposed to chronic transfusions (n = 12) or hydroxyurea (n = 32), median age 19.2 years (range 18.0-31.5), received a screening brain MRI/MRA and their results were compared with a clinical exam performed during childhood and adolescence. We used exact log-rank test to compare MRI and MRA progression among any two groups. The hazard ratio (HR) and 95% confidence interval (CI) were calculated from Cox regression analyses. Progression of MRI and MRA occurred in 12 (27%) and 4 (9%) young adults, respectively, relative to their pediatric exams. MRI progression risk was high among participants with abnormal pediatric exams (HR: 11.6, 95% CI: 2.5-54.7) and conditional or abnormal transcranial Doppler ultrasound velocities (HR: 3.9, 95% CI: 1.0-15.1). Among individuals treated with hydroxyurea, high fetal hemoglobin measured in childhood was associated with lower hazard of MRI progression (HR: 0.86, 95% CI: 0.76-0.98). MRA progression occurred more frequently among those with prior stroke (HR: 8.6, 95% CI: 1.2-64), abnormal pediatric exam (P = 0.00084), and elevated transcranial Doppler ultrasound velocities (P = 0.004). Brain MRI/MRA imaging in pediatrics can identify high-risk patients for CNS disease progression in young adulthood, prompting consideration for early aggressive treatments.
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Affiliation(s)
- Grace Champlin
- Department of Clinical Education and Training, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Scott N Hwang
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Andrew Heitzer
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Juan Ding
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Lisa Jacola
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jeremie H Estepp
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.,Global Medicine, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Winfred Wang
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Kenneth I Ataga
- University of Tennessee Health Science Center (UTHSC), Center for Sickle Cell Disease, Memphis, TN 38163, USA.,Methodist University Comprehensive Sickle Cell Center, Memphis, TN 38104, USA
| | - Curtis L Owens
- Methodist University Comprehensive Sickle Cell Center, Memphis, TN 38104, USA
| | - Justin Newman
- Memphis Radiological Professional Corporation, Memphis, TN 38138, USA
| | - Allison A King
- Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Robert Davis
- Center in Biomedical Informatics at UTHSC, Memphis, TN 38163, USA
| | - Guolian Kang
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jane S Hankins
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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11
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Batista JVGF, Pereira-Martins DA, Falcão DA, Domingos IF, Arcanjo GS, Hatzlhofer BL, Weinhäuser I, Batista THC, Cardoso PRG, Dos Anjos AC, Hazin MF, Pitta MGR, Costa FF, Araujo AS, Lucena-Araujo AR, Bezerra MA. Association of KLOTHO polymorphisms with clinical complications of sickle cell anemia. Ann Hematol 2021; 100:1921-1927. [PMID: 34125262 DOI: 10.1007/s00277-021-04532-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 04/12/2021] [Indexed: 11/24/2022]
Abstract
The clinical and phenotypic heterogeneity of patients with sickle cell anemia (SCA) is influenced by environmental and genetic factors. Several genetic modifiers, such as the KLOTHO (KL) gene, have been associated with SCA clinical outcomes. The KL gene and its encoded proteins are implicated in important biological pathways, which affect the disease's pathophysiology, such as expression of adhesion molecules VCAM-1 and ICAM-1, oxidative stress, and nitric oxide biology. Here, we evaluated the clinical relevance of two polymorphisms found on the KL gene (rs685417 and rs211239) in 588 unrelated patients with SCA. Genotyping analyses were performed using the TaqMan system. The KL rs211239 was associated with increased number of vaso-occlusive crisis (VOCs) per year (P = 0.001), while KL rs685417 was associated with increased frequency of stroke (P = 0.034), priapism (P = 0.011), number of complications (P = 0.019), and with a lower incidence of priapism (P = 0.036). Additionally, the associations with VOCs, stroke, and priapism remained consistent in multivariate analyses (P < 0.05). Our data highlight the clinical importance of KL in SCA.
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Affiliation(s)
| | - Diego A Pereira-Martins
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.,Department of Internal Medicine, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Diego A Falcão
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Igor F Domingos
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.,Department of Clinical and Toxicological Analyses, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Gabriela S Arcanjo
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Betânia L Hatzlhofer
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.,Department of Pharmaceutical Sciences, Health Sciences Center, Federal University of Pernambuco, Recife, Brazil
| | - Isabel Weinhäuser
- Department of Internal Medicine, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Thais H C Batista
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil
| | - Pablo R G Cardoso
- Laboratory of Immunomodulation and Novel Therapeutic Approaches (LINAT), Research Center for Therapeutic Innovation Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
| | - Ana C Dos Anjos
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | - Manuela F Hazin
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | - Maira G R Pitta
- Laboratory of Immunomodulation and Novel Therapeutic Approaches (LINAT), Research Center for Therapeutic Innovation Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
| | - Fernando F Costa
- Hematology and Hemotherapy Center, State University of Campinas, Campinas, Brazil
| | - Aderson S Araujo
- Department of Internal Medicine, Hematology and Hemotherapy Foundation of Pernambuco, Recife, Brazil
| | | | - Marcos A Bezerra
- Genetics Postgraduate Program, Federal University of Pernambuco, Recife, Brazil.
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12
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Stroke and stroke prevention in sickle cell anemia in developed and selected developing countries. J Neurol Sci 2021; 427:117510. [PMID: 34077859 DOI: 10.1016/j.jns.2021.117510] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 02/02/2023]
Abstract
This comprehensive review provides an insight into the pathophysiology, epidemiology, evaluation, and treatment of sickle cell anemia (SCA)-related stroke in developed and developing countries. Vascular injury, hypercoagulability and vaso-occlusion play a role in the pathophysiology of stroke in SCA. Transcranial Doppler ultrasound (TCD) has lowered the incidence of ischemic stroke from 11% to 1% as TCD identifies children who are at risk for stroke, providing opportunities for interventions to reduce this risk. Whereas blood exchange is indicated in acute stroke, chronic transfusions (either simple or exchange on a monthly basis) are used for primary as well as secondary stroke prevention in developed countries. Children with abnormally high TCD velocities (≥ 200 cm/s) are at high risk of stroke and might benefit from hydroxyurea or hydroxycarbamide (HU) after a period of a successful transition from chronic transfusions. Hematopoietic stem cell transplant presents a cure for SCA. Gene therapy is currently investigated and may be offered to patients with SCA who had a stroke or who are at high risk of stroke if proven efficacious and safe. However, gene therapy is not likely to be implemented in low-income countries due to cost. Alternatively, HU is utilized for primary and secondary stroke prevention in developing countries. Further expansion of TCD implementation should be a priority in those settings.
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13
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Juttukonda MR, Donahue MJ, Waddle SL, Davis LT, Lee CA, Patel NJ, Pruthi S, Kassim AA, Jordan LC. Reduced oxygen extraction efficiency in sickle cell anemia patients with evidence of cerebral capillary shunting. J Cereb Blood Flow Metab 2021; 41:546-560. [PMID: 32281458 PMCID: PMC7922746 DOI: 10.1177/0271678x20913123] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Arterial spin labeling (ASL) magnetic resonance imaging (MRI) utilizes arterial blood water as an endogenous contrast agent to provide a quantitative measure of cerebral blood flow (CBF). Recently, hyperintense signal within dural venous sinuses in ASL images of sickle cell anemia (SCA) patients has been shown to be consistent with elevated flow velocities and may indicate capillary shunting and reduced oxygen extraction. Here, we performed oxygen extraction fraction (OEF) and CBF measurements in adults (cumulative n = 114) with (n = 69) and without (n = 45) SCA to test the hypothesis that hyperintense venous ASL signal is associated with reduced OEF. Higher categorical scores of shunting on ASL MRI were associated with lower OEF in participants with silent cerebral infarcts or white matter hyperintensities (p = 0.003), but not in those without lesions (p = 0.551). These findings indicate that venous hyperintense signal in ASL images in SCA patients may represent a marker of capillary-level disturbances in oxygen exchange efficiency and small vessel pathology.
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Affiliation(s)
- Meher R Juttukonda
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, USA.,Department of Radiology, Harvard Medical School, Boston, MA, USA.,Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Manus J Donahue
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Psychiatry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Spencer L Waddle
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Larry T Davis
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chelsea A Lee
- Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Niral J Patel
- Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sumit Pruthi
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Adetola A Kassim
- Department of Medicine, Division of Hematology-Oncology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lori C Jordan
- Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
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14
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Mallon D, Doig D, Dixon L, Gontsarova A, Jan W, Tona F. Neuroimaging in Sickle Cell Disease: A Review. J Neuroimaging 2021; 30:725-735. [PMID: 33463866 DOI: 10.1111/jon.12766] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/22/2020] [Indexed: 11/28/2022] Open
Abstract
Sickle cell disease is the most common hereditary hemoglobinopathy, which results in abnormally shaped and rigid red blood cells. These sickle-shaped red blood cells cause vaso-occlusion and ischemic phenomena that can affect any organ in the body. As a common cause of disability, the neurological manifestations of sickle cell disease are particularly important. Neuroimaging has a crucial role in the diagnosis, management, and prevention of the complications of sickle cell disease. These complications can affect the brain parenchyma, vasculature, and skull and can be ascribed directly or indirectly to a vasculopathy of small and large vessels. Vaso-occlusion can cause ischemic stroke. Ischemic damage in the absence of an acute neurological deficit, and therefore only apparent on neuroimaging, is termed silent cerebral ischemia. Weakening of the arterial walls can cause aneurysms. In its most severe form, a vasculopathy of the terminal internal carotid arteries can progress to moyamoya syndrome, characterized by steno-occlusive disease and the formation of friable collateral arteries. Rupture of aneurysms or friable collateral arteries is a potential cause of intracranial hemorrhage. The skull and vertebrae may be affected by extra-medullary hematopoiesis, due to severe anemia, or iron deposition, due to chronic red blood cell transfusion. Impaired blood supply to bone is associated with osteomyelitis and osteonecrosis. Fat embolization syndrome is a rare complication of osteonecrosis, which may cause devastating neurological impairment. Awareness and early recognition of the diverse manifestations of sickle cell disease on neuroimaging is crucial to ensure optimal treatment in a complex patient cohort.
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Affiliation(s)
- Dermot Mallon
- Imperial College NHS Healthcare Trust, Charing Cross Hospital, London, UK
| | - David Doig
- Imperial College NHS Healthcare Trust, Charing Cross Hospital, London, UK
| | - Luke Dixon
- Imperial College NHS Healthcare Trust, Charing Cross Hospital, London, UK
| | | | - Wajanat Jan
- Imperial College NHS Healthcare Trust, Charing Cross Hospital, London, UK
| | - Francesca Tona
- Imperial College NHS Healthcare Trust, Charing Cross Hospital, London, UK
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15
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Al Hashmi A, Aaron S. Acute Ischemic Stroke in Sickle Cell Disease Challenges for Thrombolysis. DUBAI MEDICAL JOURNAL 2020. [DOI: 10.1159/000510873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Sickle cell disease (SCD) is a hemoglobinopathy disorder that was recognized in 1949. Stroke is one of the most devastating complications of this disorder. The risk of stroke in SCD patients varies with the genotype; the highest rate has been reported with hemoglobin S. Tissue type plasminogen activator (t PA) is class I recommended therapy for acute ischemic stroke (AIS) since 1996. Although it is unclear if SCD patients were included in the t PA trail, SCD has never been identified as contraindication. The debate of offering t PA for adult SCD patient presenting with AIS continued for at least 2 decades. It is not up and until 2 years ago when the American Heart Association and American stroke association (AHA/ASA) announced that intravenous (IV) t PA can be offered to adult SCD patients presenting with AIS. Here, we report a case where successful IV thrombolytic therapy was offered to an adult SCD patient presenting with AIS with excellent outcome.
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16
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Schlenz AM, Phillips S, Mueller M, Melvin C, Adams RJ, Kanter J. Practice patterns for stroke prevention using transcranial Doppler in sickle cell anemia: DISPLACE Consortium. Pediatr Blood Cancer 2020; 67:e28172. [PMID: 31925913 PMCID: PMC7036320 DOI: 10.1002/pbc.28172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/13/2019] [Accepted: 12/29/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Children with sickle cell anemia (SCA) are at increased risk for stroke. In 2014, the National Heart, Lung, and Blood Institute (NHLBI) developed guidelines for stroke prevention in SCA informed by the Stroke Prevention Trial in Sickle Cell Anemia (STOP) and Optimizing Primary Stroke Prevention in Sickle Cell Anemia (STOP II) trials. The guidelines specify the use of transcranial Doppler (TCD) screening and intervention with chronic red cell transfusions (CRCT) in children with SCA who have TCD indication of high stroke risk. The purpose of this study was to describe real-world practice patterns of stroke risk screening and intervention in sites that participated in the Dissemination and Implementation of Stroke Prevention Looking at the Care Environment (DISPLACE) Consortium. PROCEDURE Site investigators completed a survey during the formative stages of the study to evaluate their TCD practices relative to the STOP studies. Descriptive statistics and analysis of free-text comments for more complex practices were evaluated. RESULTS Results suggested universal acceptance of annual TCD screening and initiation of CRCT following an abnormal result among the DISPLACE Consortium, consistent with NHLBI recommendations. However, there was wide variation in methods for conducting TCD screenings (eg, dedicated Doppler vs TCD imaging), classifying TCD results, and actions taken for conditional and inadequate results. CONCLUSIONS Annual TCD screening and initiation of CRCT are critical stroke prevention practices that were universally embraced in the consortium. Additional research would be beneficial for informing clinical practices for areas in which guidelines are absent or unclear.
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Affiliation(s)
- Alyssa M. Schlenz
- Department of Pediatrics, Medical University of South Carolina,Department of Pediatrics, University of Colorado School of Medicine
| | | | - Martina Mueller
- College of Nursing, Medical University of South Carolina,Department of Public Health Sciences, Medical University of South Carolina
| | - Cathy Melvin
- Department of Public Health Sciences, Medical University of South Carolina
| | - Robert J. Adams
- Department of Neurology and Neurosurgery, Medical University of South Carolina
| | - Julie Kanter
- Division of Hematology & Oncology, University of Alabama Birmingham
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17
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Jordan LC, Kassim AA, Wilkerson KL, Lee CA, Waddle SL, Donahue MJ. Using novel magnetic resonance imaging methods to predict stroke risk in individuals with sickle cell anemia. Hematol Oncol Stem Cell Ther 2020; 13:76-84. [PMID: 32192979 DOI: 10.1016/j.hemonc.2019.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/11/2019] [Indexed: 11/28/2022] Open
Abstract
Sickle cell anemia (SCA) is a well-characterized monogenetic disorder with a high prevalence of cerebral vasculopathy, silent cerebral infarcts, and strokes. A significant mechanism for cerebral infarction in SCA is hemodynamic imbalance. To compensate for reduced oxygen-carrying capacity due to anemia, individuals with SCA have chronically elevated cerebral blood flow to maintain viable oxygen delivery to the brain tissue. Often the oxygen extraction fraction (ratio of oxygen consumed to oxygen delivered) is increased in more severely affected individuals. Subsequently, cerebrovascular reserve capacity, the ability of arterioles to dilate and further increase the cerebral blood volume and flow, will be reduced. These hemodynamic profiles have been associated with prior cerebral infarcts and increased evidence of disease severity. These cerebral hemodynamic parameters can be assessed noninvasively with noncontrast magnetic resonance imaging (MRI) of the brain utilizing specific MRI methods. This review focuses on using advanced neuroimaging methods to assess stroke risk in individuals with SCA, and such methods may be utilized before and after bone marrow or hematopoietic stem cell transplant to assess cerebral hemodynamic response. This manuscript is part of the Proceeding of The European Group for Blood and Marrow Transplantation (EBMT) Congress on Sickle Cell Disease, 16th-17 May 2019, Regensburg, Germany.
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Affiliation(s)
- Lori C Jordan
- Pediatrics-Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA; Neurology, Vanderbilt University Medical Center, Nashville, TN, USA; Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA.
| | - Adetola A Kassim
- Medicine-Division of Hematology/Stem Cell Transplantation, Vanderbilt-Meharry Sickle Cell Center for Excellence, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Karina L Wilkerson
- Medicine-Division of Hematology/Stem Cell Transplantation, Vanderbilt-Meharry Sickle Cell Center for Excellence, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chelsea A Lee
- Pediatrics-Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Spencer L Waddle
- Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Manus J Donahue
- Neurology, Vanderbilt University Medical Center, Nashville, TN, USA; Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA; Psychiatry, Vanderbilt University Medical Center, Nashville, TN, USA; Physics and Astronomy, Vanderbilt University, Nashville, TN, USA
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18
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Arterial ischemic stroke in non-neonate children: Diagnostic and therapeutic specificities. Rev Neurol (Paris) 2020; 176:20-29. [DOI: 10.1016/j.neurol.2019.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 12/12/2022]
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19
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Herbst J, Crissinger T, Baldwin K. Diffuse Ischemic Strokes and Sickle Cell Crisis Induced by Disseminated Anaplasmosis: A Case Report. Case Rep Neurol 2019; 11:271-276. [PMID: 31607893 PMCID: PMC6787427 DOI: 10.1159/000502567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/06/2019] [Indexed: 11/19/2022] Open
Abstract
We present a 26-year-old female with HbSC disease who presented to the emergency department multiple times with pain and shortness of breath, eventually developing unresponsiveness and a brief episode of pulseless electrical activity. She was admitted to the intensive care unit with multisystem organ failure and found to have diffuse ischemic strokes. Infectious workup revealed disseminated anaplasmosis and babesiosis, which had likely caused sickle cell crisis, atypical hemolytic-uremic syndrome, and ischemic brain injury. She was started on eculizumab therapy as well as antimicrobial therapy with doxycycline, clindamycin, and atovaquone. The patient was given tracheostomy and a percutaneous feeding tube. Unfortunately, she did not have significant neurologic recovery after prolonged hospital stay and was discharged to a skilled nursing facility with significant neurologic burden.
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Affiliation(s)
- John Herbst
- Neurology, Geisinger Medical Center, Danville, Pennsylvania, USA
| | - Tyler Crissinger
- Geisinger Commonwealth School of Medicine, Scranton, Pennsylvania, USA
| | - Kelly Baldwin
- Neurology, Geisinger Medical Center, Danville, Pennsylvania, USA
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20
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Juttukonda MR, Donahue MJ, Davis LT, Gindville MC, Lee CA, Patel NJ, Kassim AA, Pruthi S, Hendrikse J, Jordan LC. Preliminary evidence for cerebral capillary shunting in adults with sickle cell anemia. J Cereb Blood Flow Metab 2019; 39:1099-1110. [PMID: 29260615 PMCID: PMC6547194 DOI: 10.1177/0271678x17746808] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Elevated flow velocities in adults with sickle cell anemia (SCA) may cause rapid erythrocyte transit through capillaries. This phenomenon could present as dural venous sinus hyperintensity on arterial spin labeling (ASL)-MRI and could be indicative of capillary shunting. Here, the prevalence of ASL venous hyperintensities and association with relevant physiology in adults with SCA was investigated. SCA ( n = 46) and age-matched control ( n = 16) volunteers were recruited for 3.0 T MRI. Pseudo-continuous ASL-MRI was acquired for cerebral blood flow (CBF) calculation and venous hyperintensity determination; venous signal intensity and a categorical venous score (three raters; 0 = no hyperintensity, 1 = focal hyperintensity, and 2 = diffuse hyperintensity) were recorded. Flow velocity in cervical internal carotid artery segments was determined from phase contrast data (venc = 40 cm/s) and whole-brain oxygen extraction fraction (OEF) was determined from T2-relaxation-under-spin-tagging MRI. Cerebral metabolic rate of oxygen was calculated as the product of OEF, CBF, and blood oxygen content. ASL venous hyperintensities were significantly ( p < 0.001) more prevalent in SCA (65%) relative to control (6%) participants and were associated with elevated flow velocities ( p = 0.03). CBF ( p < 0.001), but not OEF, increased with increasing hyperintensity score. Prospective trials that evaluate this construct as a possible marker of impaired oxygen delivery and stroke risk may be warranted.
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Affiliation(s)
- Meher R Juttukonda
- 1 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Manus J Donahue
- 1 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA.,2 Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA.,3 Department of Psychiatry, Vanderbilt University Medical Center, Nashville, TN, USA.,4 Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, USA
| | - Larry T Davis
- 1 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Melissa C Gindville
- 5 Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chelsea A Lee
- 5 Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Niral J Patel
- 5 Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Adetola A Kassim
- 6 Department of Medicine, Division of Hematology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sumit Pruthi
- 1 Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jeroen Hendrikse
- 7 Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lori C Jordan
- 2 Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA.,5 Department of Pediatrics, Division of Pediatric Neurology, Vanderbilt University Medical Center, Nashville, TN, USA
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21
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ElAlfy MS, Ebeid FSE, Kamal TM, Eissa DS, Ismail EAR, Mohamed SH. Angiotensinogen M235T Gene Polymorphism is a Genetic Determinant of Cerebrovascular and Cardiopulmonary Morbidity in Adolescents with Sickle Cell Disease. J Stroke Cerebrovasc Dis 2019; 28:441-449. [PMID: 30409744 DOI: 10.1016/j.jstrokecerebrovasdis.2018.10.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/09/2018] [Accepted: 10/13/2018] [Indexed: 01/19/2023] Open
Affiliation(s)
- Mohsen Saleh ElAlfy
- Pediatrics Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
| | | | - Tarek Mostafa Kamal
- Medical Genetics Pediatric Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
| | - Deena Samir Eissa
- Clinical Pathology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
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22
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Abstract
Sickle cell disease (SCD) is a monogenetic disorder caused by a mutation in the β-globin gene HBB leading to polymerization of red blood cells causing damage to cell membranes, increasing its rigidity and intravascular hemolysis. Multiple lines of evidence suggest that SCD can be viewed as pan-vasculopathy associated with multiple mechanisms but driven by hemoglobin S polymerization. Here we review the pathophysiology, clinical manifestations and management strategies for cerebrovascular disease, pulmonary hypertension and renal disease associated with SCD. These "vascular phenotypes" reflect the systemic nature of the complications of SCD and are a major threat to the well-being of patients with the disorder.
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Affiliation(s)
- Ashar Usmani
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy, University of Illinois at Chicago, Chicago, IL, USA
| | - Roberto F Machado
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep, and Occupational Medicine, Indiana University, Indianapolis, IN, USA
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23
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Dattani A, Jackson A. The cause of the stroke: a diagnostic uncertainty. BMJ Case Rep 2017. [PMID: 28645902 DOI: 10.1136/bcr-2016-218358] [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: 11/03/2022] Open
Abstract
A 39-year-old man with a history of sickle cell disease (SCD) presented with left leg weakness. He had a normal CT head and CT angiogram, but MRI head showed multiple acute bilateral cortical infarcts including in the right precentral gyrus. The MRI findings were more in keeping with an embolic source rather than stroke related to SCD, although it could not be ruled out. He also had an echocardiogram which revealed a patent foramen ovale. He was treated with antiplatelet therapy and also had red blood cell exchange transfusion. His symptoms improved significantly and he was discharged with follow-up as an outpatient and a cardiology review.
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Affiliation(s)
| | - Ava Jackson
- Stroke and Geriatric Medicine, Barts Health NHS Trust, London, UK
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24
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Simões BP, Pieroni F, Costa T, Barros GN, Darrigo G, Grecco CS, Bernardes JE, Moraes D, Stracieri ABL, Cunha R, Rodrigues MC. Allogenic bone narrow transplantation in sickle-cell diseases. Rev Assoc Med Bras (1992) 2017; 62 Suppl 1:16-22. [PMID: 27982320 DOI: 10.1590/1806-9282.62.suppl1.16] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Sickle-cell diseases are the most common inherited hemoglobinopathies worldwide. Improvement in survival has been seen in the last decades with the introduction of careful screening and prevention of complications and the introduction of hydroxyurea. Stem-cell transplantation is currently the only curative option for these patients and has been indicated for patients with neurological events, repeated vaso-occlusive crisis, any organ damage or presence of red blood cell antibodies. Related bone-marrow or cord-blood transplant has shown an overall survival of more than 90% with a disease-free survival of 90% in 1,000 patients transplanted in the last decades. The use of unrelated donors unfortunately has not shown the same good results, but better typing methods and improved support may improve the outcome with this source of stem cells in the future. In Brazil, only recently stem cell transplant from related donors has been included in the procedures performed in the public health system. The use of related bone marrow or cord blood and a myeloablative conditioning regimen are considered standard of care for patients with sickle-cell diseases. Transplants with non-myeloablative regimens, unrelated donors or haploidentical donors should be performed only in controlled clinical trials.
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Affiliation(s)
| | - Fabiano Pieroni
- Transplantation Unit of Hospital das Clínicas, FMRP, USP, Brasil
| | - Thalita Costa
- Transplantation Unit of Hospital das Clínicas, FMRP, USP, Brasil
| | | | | | | | | | - Daniela Moraes
- Transplantation Unit of Hospital das Clínicas, FMRP, USP, Brasil
| | | | - Renato Cunha
- Transplantation Unit of Hospital das Clínicas, FMRP, USP, Brasil
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25
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Rodrigues DOW, Ribeiro LC, Sudário LC, Teixeira MTB, Martins ML, Pittella AMOL, Junior IDOF. Genetic determinants and stroke in children with sickle cell disease. J Pediatr (Rio J) 2016; 92:602-608. [PMID: 27268459 DOI: 10.1016/j.jped.2016.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 01/14/2016] [Accepted: 01/27/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To verify genetic determinants associated with stroke in children with sickle cell disease (SCD). METHODS Prospective cohort with 110 children submitted to neonatal screening by the Neonatal Screening Program, between 1998 and 2007, with SCD diagnosis, followed at a regional reference public service for hemoglobinopathies. The analyzed variables were type of hemoglobinopathy, gender, coexistence with alpha thalassemia (α-thal), haplotypes of the beta globin chain cluster, and stroke. The final analysis was conducted with 66 children with sickle cell anemia (SCA), using the chi-squared test in the program SPSS® version 14.0. RESULTS Among children with SCD, 60% had SCA. The prevalence of coexistence with α-thal was 30.3% and the Bantu haplotype (CAR) was identified in 89.2%. The incidence of stroke was significantly higher in those with SCA (27.3% vs. 2.3%; p=0.001) and males (24.1% vs. 9.6%; p=0.044). The presence of α-thal (p=0.196), the CAR haplotype (p=0.543), and socioeconomic factors were not statistically significant in association with the occurrence of stroke. CONCLUSION There is a high incidence of stroke in male children and in children with SCA. Coexistence with α-thal and haplotypes of the beta globin chain cluster did not show any significant association with stroke. The heterogeneity between previously evaluated populations, the non-reproducibility between studies, and the need to identify factors associated with stroke in patients with SCA indicate the necessity of conducting further research to demonstrate the relevance of genetic factors in stroke related to SCD.
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Affiliation(s)
- Daniela O W Rodrigues
- Fundação Hemominas, Juiz de Fora, MG, Brazil; Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil.
| | - Luiz C Ribeiro
- Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil; Universidade Federal de Juiz de Fora (UFJF), Departamento de Estatística, Juiz de Fora, MG, Brazil
| | - Lysla C Sudário
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), Juiz de Fora, MG, Brazil; Universidade Presidente Antônio Carlos (UNIPAC), Faculdade de Medicina, Juiz de Fora, MG, Brazil
| | - Maria T B Teixeira
- Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil; Universidade Federal de Juiz de Fora (UFJF), Departamento de Saúde Coletiva, Juiz de Fora, MG, Brazil
| | - Marina L Martins
- Fundação Hemominas, Juiz de Fora, MG, Brazil; Fundação Hemominas, Setor de Pesquisa, Belo Horizonte, MG, Brazil
| | - Anuska M O L Pittella
- Faculdade de Ciências Médicas e da Saúde de Juiz de Fora (SUPREMA), Juiz de Fora, MG, Brazil
| | - Irtis de O Fernandes Junior
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), Juiz de Fora, MG, Brazil; Universidade Presidente Antônio Carlos (UNIPAC), Faculdade de Medicina, Juiz de Fora, MG, Brazil
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Rodrigues DO, Ribeiro LC, Sudário LC, Teixeira MT, Martins ML, Pittella AM, Junior IDOF. Genetic determinants and stroke in children with sickle cell disease. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2016. [DOI: 10.1016/j.jpedp.2016.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Baker C, Grant AM, George MG, Grosse SD, Adamkiewicz TV. Contribution of Sickle Cell Disease to the Pediatric Stroke Burden Among Hospital Discharges of African-Americans-United States, 1997-2012. Pediatr Blood Cancer 2015; 62:2076-81. [PMID: 26174777 PMCID: PMC4624016 DOI: 10.1002/pbc.25655] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/05/2015] [Indexed: 12/29/2022]
Abstract
BACKGROUND Approximately 10-20% of children with sickle cell disease (SCD) develop stroke, but few consistent national estimates of the stroke burden for children with SCD exist. The purpose of this study is to determine the proportion of diagnosed stroke among African-American pediatric discharges with and without SCD. PROCEDURE Records for African-Americans aged 1-18 years in the Kids' Inpatient Database (KID) 1997-2012 with ≥1 ICD-9-CM diagnosis code for stroke were included. Data were weighted to provide national estimates. A total of 2,994 stroke cases among African-American children were identified. Diagnoses co-existing with ischemic or hemorrhagic stroke were frequency ranked separately. RESULTS From 1997 through 2012, SCD was present in 24% of stroke discharges, with 89% being ischemic stroke. For hospital discharges of African-American children, SCD is the highest co-existing risk factor for ischemic stroke (29%). Stroke in children with SCD occurred predominantly in children aged 5-9 years, older than previously reported. The trend of stroke discharges significantly decreased for children with SCD from 1997 to 2012 for children aged 10-14 years. CONCLUSIONS SCD is a leading risk factor to pediatric stroke in African-American children. Reducing the number of strokes among children with SCD would have a significant impact on the rate of strokes among African-American children. Preventative intervention may be modifying initial age of presentation of stroke in children with SCD.
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Affiliation(s)
- Charlotte Baker
- Division of Blood Disorders, National Center for Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Althea M. Grant
- Division of Blood Disorders, National Center for Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Mary G. George
- Division for Heart Disease and Stroke Prevention, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Scott D. Grosse
- Division of Blood Disorders, National Center for Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia
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Quimby KR, Hambleton IR, Landis RC. Intravenous infusion of haptoglobin for the prevention of adverse clinical outcome in Sickle Cell Disease. Med Hypotheses 2015; 85:424-32. [DOI: 10.1016/j.mehy.2015.06.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/04/2015] [Accepted: 06/24/2015] [Indexed: 12/19/2022]
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Mansour AM, Hasbini D, Younis MH, Bhatti MT. Irreversible Loss of Vision in a Child due to Occipital Infarction after Gastroenteritis. Case Rep Ophthalmol 2015; 6:106-9. [PMID: 25960732 PMCID: PMC4410510 DOI: 10.1159/000381258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A 2½-year-old girl developed a bilateral occipital infarct following severe gastroenteritis with bilateral vision of light perception. Evaluations for sickle cell anemia, hemolytic anemia and coagulopathies were negative. Cortical blindness is an uncommon but dramatic complication of gastroenteritis, hence the need of prompt hydration and other supportive measures to avoid irreversible visual loss or mental sequela.
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Affiliation(s)
- Ahmad M Mansour
- Department of Ophthalmology, Rafik Hariri University Hospital and American University of Beirut, Beirut, Lebanon
| | - Dana Hasbini
- Pediatric Neurology Service, Department of Neurology, Rafik Hariri University Hospital, Beirut, Lebanon
| | - Muhammad H Younis
- Department of Ophthalmology, Rafik Hariri University Hospital and American University of Beirut, Beirut, Lebanon
| | - M Tariq Bhatti
- Departments of Ophthalmology and Neurology, Duke Eye Center and Duke University Medical Center, Durham, N.C., USA
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30
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Brousse V, Kossorotoff M, de Montalembert M. How I manage cerebral vasculopathy in children with sickle cell disease. Br J Haematol 2015; 170:615-25. [DOI: 10.1111/bjh.13477] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Valentine Brousse
- Paediatrics and Sickle-Cell Centre; University Hospital Necker-Enfants Malades; APHP; Paris France
- UMR S-1134; INSERM; Paris France
- GR-Ex; Laboratory of Excellence; Paris France
- Paris Descartes University; Paris France
| | - Manoelle Kossorotoff
- Paediatric Neurology, French Centre for Paediatric Stroke; Necker-Enfants Malades University Hospital; APHP; Paris France
| | - Mariane de Montalembert
- Paediatrics and Sickle-Cell Centre; University Hospital Necker-Enfants Malades; APHP; Paris France
- GR-Ex; Laboratory of Excellence; Paris France
- Paris Descartes University; Paris France
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31
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Marsella M, Borgna-Pignatti C. Transfusional iron overload and iron chelation therapy in thalassemia major and sickle cell disease. Hematol Oncol Clin North Am 2015; 28:703-27, vi. [PMID: 25064709 DOI: 10.1016/j.hoc.2014.04.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Iron overload is an inevitable consequence of blood transfusions and is often accompanied by increased iron absorption from the gut. Chelation therapy is necessary to prevent the consequences of hemosiderosis. Three chelators, deferoxamine, deferiprone, and deferasirox, are presently available and a fourth is undergoing clinical trials. The efficacy of all 3 available chelators has been demonstrated. Also, many studies have shown the efficacy of the combination of deferoxamine plus deferiprone as an intensive treatment of severe iron overload. Alternating chelators can reduce adverse effects and improve compliance. Adherence to therapy is crucial for good results.
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Affiliation(s)
- Maria Marsella
- Department of Medical Sciences, University of Ferrara, Azienda Ospedale-Università Via Aldo Moro 8, Cona, Ferrara, Italy
| | - Caterina Borgna-Pignatti
- Department of Medical Sciences, University of Ferrara, Azienda Ospedale-Università Via Aldo Moro 8, Cona, Ferrara, Italy.
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Alix JJ, Hadjivassiliou M, Ali R, Slater D, Messenger AG, Rao DG. Sensory ganglionopathy with livedoid vasculopathy controlled by immunotherapy. Muscle Nerve 2014; 51:296-301. [DOI: 10.1002/mus.24452] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2014] [Indexed: 12/26/2022]
Affiliation(s)
- James J.P. Alix
- Department of Clinical Neurophysiology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield S10 2JF
| | - Marios Hadjivassiliou
- Department of Neurology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield England
| | - Rokiahmah Ali
- Department of Histopathology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield England
| | - David Slater
- Department of Histopathology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield England
| | - Andrew G. Messenger
- Department of Dermatology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield England
| | - D. Ganesh Rao
- Department of Clinical Neurophysiology; Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust; Glossop Road Sheffield S10 2JF
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Lance EI, Casella JF, Everett AD, Barron-Casella E. Proteomic and biomarker studies and neurological complications of pediatric sickle cell disease. Proteomics Clin Appl 2014; 8:813-27. [PMID: 25290359 DOI: 10.1002/prca.201400069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 08/20/2014] [Accepted: 09/30/2014] [Indexed: 01/27/2023]
Abstract
Biomarker analysis and proteomic discovery in pediatric sickle cell disease has the potential to lead to important discoveries and improve care. The aim of this review article is to describe proteomic and biomarker articles involving neurological and developmental complications in this population. A systematic review was conducted to identify relevant research publications. Articles were selected for children under the age of 21 years with the most common subtypes of sickle cell disease. Included articles focused on growth factors (platelet-derived growth factor), intra and extracellular brain proteins (glial fibrillary acidic protein, brain-derived neurotrophic factor), and inflammatory and coagulation markers (interleukin-1β, l-selectin, thrombospondin-1, erythrocyte, and platelet-derived microparticles). Positive findings include increases in plasma brain-derived neurotrophic factor and platelet-derived growth factor with elevated transcranial Dopplers velocities, increases in platelet-derived growth factor isoform AA with overt stroke, and increases in glial fibrillary acidic protein with acute brain injury. These promising potential neuro-biomarkers provide insight into pathophysiologic processes and clinical events, but their clinical utility is yet to be established. Additional proteomics research is needed, including broad-based proteomic discovery of plasma constituents and blood cell proteins, as well as urine and cerebrospinal fluid components, before, during and after neurological and developmental complications.
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Affiliation(s)
- Eboni I Lance
- Department of Neurology, Kennedy Krieger Institute, Baltimore, MD, USA; Department of Neurology, the Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pediatrics, Division of Hematology, the Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Kennedy BC, McDowell MM, Yang PH, Wilson CM, Li S, Hankinson TC, Feldstein NA, Anderson RCE. Pial synangiosis for moyamoya syndrome in children with sickle cell anemia: a comprehensive review of reported cases. Neurosurg Focus 2014; 36:E12. [PMID: 24380478 DOI: 10.3171/2013.10.focus13405] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Pediatric patients with sickle cell anemia (SCA) carry a significant risk of developing moyamoya syndrome (MMS) and brain ischemia. The authors sought to review the safety and efficacy of pial synangiosis in the treatment of MMS in children with SCA by performing a comprehensive review of all previously reported cases in the literature. METHODS The authors retrospectively reviewed the clinical and radiographic records in 17 pediatric patients with SCA treated at the Morgan Stanley Children's Hospital of New York (MSCHONY) who developed radiological evidence of MMS and underwent pial synangiosis between 1996 and 2012. The authors then added any additional reported cases of pial synangiosis for this population in the literature for a combined analysis of clinical and radiographic outcomes. RESULTS The combined data consisted of 48 pial synangiosis procedures performed in 30 patients. Of these, 27 patients (90%) presented with seizure, stroke, or transient ischemic attack, whereas 3 (10%) were referred after transcranial Doppler screening. At the time of surgery, the median age was 12 years. Thirteen patients (43%) suffered an ischemic stroke while on chronic transfusion therapy. Long-term follow-up imaging (MR angiography or catheter angiography) at a mean of 25 months postoperatively was available in 39 (81%) treated hemispheres. In 34 (87%) of those hemispheres there were demonstrable collateral vessels on imaging. There were 4 neurological events in 1590 cumulative months of follow-up, or 1 event per 33 patient-years. In the patients in whom complete data were available (MSCHONY series, n = 17), the postoperative stroke rate was reduced more than 6-fold from the preoperative rate (p = 0.0003). CONCLUSIONS Pial synangiosis in patients with SCA, MMS, and brain ischemia appears to be a safe and effective treatment option. Transcranial Doppler and/or MRI screening in asymptomatic patients with SCA is recommended for the diagnosis of MMS.
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Affiliation(s)
- Benjamin C Kennedy
- Department of Neurological Surgery, Columbia University Medical Center, New York, New York; and
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Numis AL, Fox CK. Arterial ischemic stroke in children: risk factors and etiologies. Curr Neurol Neurosci Rep 2014; 14:422. [PMID: 24384876 DOI: 10.1007/s11910-013-0422-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stroke is increasingly recognized as a significant cause of morbidity and mortality in children, and as a financial burden for families and society. Recent studies have identified and confirmed presumptive risk factors, and have identified novel associations with childhood arterial ischemic stroke. A better understanding of risk factors for stroke in children, which differ from the atherosclerotic risk factors in adults, is the first step needed to improve strategies for stroke prevention and intervention, and ultimately minimize the physical, mental, and financial burden of arterial ischemic stroke. Here, we discuss recent advances in research for selected childhood stroke risk factors, highlighting the progress made in our understanding of etiologic mechanisms and pathophysiology, and address the future directions for acute and long-term treatment strategies for pediatric stroke.
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Affiliation(s)
- Adam L Numis
- Division of Child Neurology, University of California, San Francisco, 675 Nelson Rising Lane, 402 B, San Francisco, CA, 94143, USA
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Affiliation(s)
- Murad Talahma
- From the Neurological Institute, University Hospitals Case Medical Center, Cleveland, OH (M.T., S.S.); and Departments of Neurology and Stroke Units, Helsinki University Central Hospital, Helsinki, Finland (D.S.)
| | - Daniel Strbian
- From the Neurological Institute, University Hospitals Case Medical Center, Cleveland, OH (M.T., S.S.); and Departments of Neurology and Stroke Units, Helsinki University Central Hospital, Helsinki, Finland (D.S.)
| | - Sophia Sundararajan
- From the Neurological Institute, University Hospitals Case Medical Center, Cleveland, OH (M.T., S.S.); and Departments of Neurology and Stroke Units, Helsinki University Central Hospital, Helsinki, Finland (D.S.).
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37
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Tseng WS. Halitosis: Could it be a predictor of stroke? Med Hypotheses 2014; 82:335-7. [DOI: 10.1016/j.mehy.2013.12.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 12/27/2013] [Indexed: 12/21/2022]
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