1
|
do Kleyton Palmeira Ó, da Silva Freire AK, de Nóbrega DN, Dos Santos Souza R, Farias ICC, de Mendonça Belmont TF, da Silva AS, da Silva Arcanjo G, da Silva Araujo A, Dos Anjos ACM, de Araujo ARL, Bezerra MAC, de Moura PMMF, do Socorro Mendonça Cavalcanti M, Vasconcelos LRS. Polymorphisms and gene expression of metalloproteinases and their inhibitors associated with cerebral ischemic stroke in young patients with sickle cell anemia. Mol Biol Rep 2023; 50:3341-3353. [PMID: 36720795 DOI: 10.1007/s11033-023-08262-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/09/2023] [Indexed: 02/02/2023]
Abstract
BACKGROUND Sickle cell anemia (SCA) is a genetic disease with great clinical heterogeneity and few viable strategies for treatment; hydroxyurea (HU) is the only widely used drug. Thus, the study of single nucleotide polymorphisms (SNPs) and the gene expression of MMPs 1, 2, 9, 7 and TIMPs 1 and 2, which are involved in the regulation of extracellular matrix, inflammation, and neuropathies, may provide further insights into the pathophysiology of the disease and elucidate biomarkers and molecules as potential therapeutic targets for patients with SCA. METHODS AND RESULTS We evaluated 251 young individuals with SCA from northeastern Brazil. The groups were divided according to vaso-occlusive crisis (VOC) and cerebrovascular disease (CVD), compared to control individuals. SNP detection and gene expression assays were performed by real-time PCR, TaqMan system®. Both the expression levels of MMP1 gene, and the SNP MMP1-1607 1G/2G were associated with the risk of cerebral ischemic stroke (IS), and the expression of MMP1 was also associated with a higher frequency of VOC/year. Expression levels of MMP7, TIMP1, and TIMP2 were increased in patients conditioned to IS. The SNP 372T>C (rs4898) TIMP1 T alleles were more frequent in patients with > 5 VOC events/year. The SNP rs17576 of MMP9 showed differences in gene expression levels; it was increased in the genotypes AG, and AG+GG. CONCLUSION The findings of this study, the SNPs, and expression provide initial support for understanding the role of MMPs-TIMPs in the pathophysiology of SCA in young patients.
Collapse
Affiliation(s)
- Ó do Kleyton Palmeira
- Instituto Aggeu Magalhães Research Center - IAM-FIOCRUZ-PE, Av. Professor Moraes Rego, S/N, Recife, PE, 50.740-465, Brazil
| | - Ana Karla da Silva Freire
- Institute of Biological Sciences and Faculty of Medical Sciences, University of Pernambuco, Recife, PE, Brazil
| | - Débora Nascimento de Nóbrega
- Instituto Aggeu Magalhães Research Center - IAM-FIOCRUZ-PE, Av. Professor Moraes Rego, S/N, Recife, PE, 50.740-465, Brazil
| | - Roberta Dos Santos Souza
- Instituto Aggeu Magalhães Research Center - IAM-FIOCRUZ-PE, Av. Professor Moraes Rego, S/N, Recife, PE, 50.740-465, Brazil
| | | | | | - Andreia Soares da Silva
- Institute of Biological Sciences and Faculty of Medical Sciences, University of Pernambuco, Recife, PE, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Gajjar B, Sharma S, Khan E, Sharma P, Jain P, Goel V, Neral A, Patel J, Parmar M, Sharma K, Sharma VK, Sharma AK. Cerebral hemodynamics in children with sickle cell disease in India: An observational cohort study. Medicine (Baltimore) 2022; 101:e29882. [PMID: 35801747 PMCID: PMC9259145 DOI: 10.1097/md.0000000000029882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
India has the second highest number of cases of sickle cell disease (SCD) and affects the most socioeconomically disadvantaged communities living in a horizontal belt from Gujarat to Odisha state. Despite high prevalence, information about cerebral hemodynamics among children with SCD in India remains scarcely described. We performed transcranial Doppler (TCD) to assess cerebral hemodynamics among Indian children with SCD and evaluated their association with clinical and hematological parameters. Children aged 3-18years, diagnosed with SCD living in Raipur in Chhattisgarh and Ahmedabad in Gujarat state were recruited. TCD was performed to obtain flow velocities from middle cerebral (MCA), intracranial internal carotid (ICA) and basilar artery. Associations were evaluated between timed-average-mean-maximum velocities (TAMMV) and various clinical and hematological parameters. Our prospective study included 62 consecutive children with known SCD. Mean ± SD age of the study population was 9.8 ± 3.9 years and 31 (50%) were male. Mean ± SD hemoglobin was 8.64 ± 1.34 Gm/dL while the mean HbSS ± SD was 70.25 ± 15.27%. While 6 (9.6%) children had suffered from stroke during previous 2 years, 7 (11%) demonstrated abnormal TAMMV. Higher HbSS level along with history of iron chelation therapy, blood transfusion and/or stroke showed a trend towards having higher TAMMV. Stroke and cerebral hemodynamic alterations are common among Indian children with SCD. Larger studies with detailed neuroimaging and genetic evaluations are needed for better understanding, characterization, risk stratification as well as optimization of the timing of blood transfusion to reduce physical disabilities among Indian children with SCD.
Collapse
Affiliation(s)
- Bhakti Gajjar
- Department of Neurology, Zydus Hospital, Ahmedabad, Gujarat, India
| | - Sanjay Sharma
- Department of Neurology, Zydus Hospital, Ahmedabad, Gujarat, India
- Department of Neurology, Ramkrishna Care Hospitals, Raipur, Chhattisgarh, India
| | - Erum Khan
- BJ Medical College, Ahmedabad, Gujarat, India
| | | | - Pawan Jain
- Department of Pediatrics, Ramkrishna Care Hospitals, Raipur, Chhattisgarh, India
| | - Vikas Goel
- Department of Hematology, Ramkrishna Care Hospitals, Raipur, Chhattisgarh, India
| | | | | | - Mamta Parmar
- Department of Neurology, Zydus Hospital, Ahmedabad, Gujarat, India
| | - Kanika Sharma
- Department of Neurology, Zydus Hospital, Ahmedabad, Gujarat, India
| | - Vijay K. Sharma
- YLL School of Medicine, National University of Singapore and Division of Neurology, National University Hospital, Singapore
- *Correspondence: Vijay K. Sharma, Yong Loo Lin School of Medicine, National University of Singapore, Level 10, NUHS Tower Block, 1E Kent Ridge Road, Singapore 119228 (e-mail: )
| | - Arvind K. Sharma
- Department of Neurology, Zydus Hospital, Ahmedabad, Gujarat, India
- BJ Medical College, Ahmedabad, Gujarat, India
| |
Collapse
|
3
|
Trpchevska A, Longoria J, Okhomina V, Raches D, Potter B, Kang G, Heitzer AM, Hankins JS. Adaptive Functioning in Children and Adolescents With Sickle Cell Disease. J Pediatr Psychol 2022; 47:939-951. [PMID: 35380685 DOI: 10.1093/jpepsy/jsac024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Risk for neurocognitive deficits in sickle cell disease (SCD) is well established, yet minimal research has evaluated the risk for deficits in adaptive functioning. We assessed adaptive functioning in pediatric patients with SCD to test the hypothesis that disease, treatment, and demographic factors were associated with adaptive outcomes. METHODS Two hundred fifty-six patients (57% HbSS/HbSß0-thalassemia and 43% HbSC/HbSß+-thalassemia), ages 8-18, received routine neuropsychological assessments as part of a larger prospective lifetime cohort study. Adaptive functioning was measured using the Behavior Assessment System for Children, Second or Third Edition. Adaptive scores were compared with normative values using t-test or Wilcoxon signed rank test and linear regression models were used to measure associations between adaptive functioning and age, hydroxyurea (HU) use, sickle genotype, and socioeconomic status. Furthermore, we examined the influence of intellectual and executive functioning on adaptive behavior using hierarchical linear regression analyses. RESULTS Parent ratings of adaptive functioning skills did not differ from normative expectations (all false discovery rate [FDR] adjusted p-value [pFDR] > 0.05). Social vulnerability was negatively associated with adaptive scores on most adaptive scales in both genotypes (pFDR < 0.05). HU treatment was not significantly associated with any adaptive scale. Overall IQ was positively associated with Functional Communication and Leadership only for those with HbSS/HbSß0-thalassemia. Higher parent ratings of executive difficulties were correlated with lower adaptive scores (estimate = -0.64, standard error = 0.051, p < .001). CONCLUSIONS Poorer parent-rated adaptive skills were associated with increased social vulnerability, lower Full-Scale IQ, and parent-rated executive difficulties. Most adaptive scores were in the normal range; however, parent ratings may not fully capture the impact of disease complications and neurocognitive deficits on daily functioning.
Collapse
Affiliation(s)
- Ana Trpchevska
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jennifer Longoria
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Victoria Okhomina
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Darcy Raches
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Brian Potter
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Guolian Kang
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Andrew M Heitzer
- Department of Psychology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jane S Hankins
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, USA
| |
Collapse
|
4
|
Aydin S, Yeral H, Oktay G, Çoban Y, Akbaş Y, Köker A, Öz Tunçer G. Associations Between Transcranial Doppler Flow Velocities, Laboratory Parameters, and Clinical Features in Turkish Children With Sickle Cell Disease. J Pediatr Hematol Oncol 2021; 43:249-253. [PMID: 34486571 DOI: 10.1097/mph.0000000000002255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/03/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Stroke is one of the major complications of sickle cell disease (SCD). Stroke features either occlusion of, or stenosis at, the origin of one of the large intracerebral arteries, the internal carotid artery (ICA), and/or the middle cerebral artery (MCA). PURPOSE We sought correlations between cerebral blood flow velocities and the laboratory and clinical findings of patients with SCD. MATERIALS AND METHODS Fifty-three pediatric SCD patients (39 with HbSS, 14 with HbSβ0) were analyzed. The mean patient age was 12.9±3.9 years. The control group contained 24 healthy individuals. The time-averaged maximum mean velocity (TAMMV) and resistive index (RI) of the MCA, the TAMMVs of the ICA and vertebral artery (VA), and the diameter of the VA were estimated through transcranial Doppler ultrasonography using a 2.5 MHz transducer, in accordance with the Stroke Prevention Trial in Sickle Cell Anemia (STOP) protocol. We evaluated the relationships between the TAMMVs, laboratory parameters, and clinical findings. RESULTS The mean±SD MCA TAMMV was 161.2±35.4 cm/s in patients with HbSS and 185.8±62.9 cm/s in patients with HbSβ0. The mean MCA TAMMV, RI, ICA TAMMV, VA TAMMV, and VA diameter were 168.5±43.9 cm/s, 0.63±0.06, 116.8±25.5 cm/s, 69.2±18.5 cm/s, and 3.5±0.61 mm for all SCD patients, respectively. In the control group, the mean MCA TAMMV, RI, ICA TAMMV, VA TAMMV, and VA diameter were 103.8±28.8 cm/s, 0.53±0.04, 96.4±27.8 cm/s, 40.3±12.1 cm/s, and 3.4±0.6 mm, respectively. Although the differences were not significant, TAMMVs were higher in HbSβ0 patients taking hydroxyurea; those with hemoglobin levels <8 g/dL, ferritin levels >1000 ng/dL, mean platelet volume >12 fL, or red cell distribution width >18%; or required chelation, or were below the third percentiles of weight and height. The TAMMV was significantly higher only in SCD patients who complained of headache. CONCLUSIONS High ferritin and low hemoglobin levels, a high mean platelet volume, a high red cell distribution width, low weight (below the third percentile), and a short height (below the third percentile) may be associated with elevated cerebral blood flow velocities and an increased stroke risk in children with SCD. Children with such features should be closely followed-up through transcranial Doppler ultrasonography examination.
Collapse
Affiliation(s)
- Sultan Aydin
- Departments of Pediatric Hematology and Oncology
| | | | | | - Yasemin Çoban
- Pediatric Intensive Care, Hatay State Hospital, Hatay, Turkey
| | | | - Alper Köker
- Pediatric Intensive Care, Hatay State Hospital, Hatay, Turkey
| | | |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Thein SL, Pirenne F, Fasano RM, Habibi A, Bartolucci P, Chonat S, Hendrickson JE, Stowell SR. Hemolytic transfusion reactions in sickle cell disease: underappreciated and potentially fatal. Haematologica 2020; 105:539-544. [PMID: 32029505 PMCID: PMC7049330 DOI: 10.3324/haematol.2019.224709] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/18/2019] [Indexed: 12/20/2022] Open
Affiliation(s)
- Swee Lay Thein
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MA, USA
| | - France Pirenne
- Etablissement Français du Sang, INSERM U955, Université Paris Est Créteil, Créteil, France.,Laboratoire d'Excellence GR-Ex, Paris, France
| | - Ross M Fasano
- Center for Transfusion Medicine and Cellular Therapies, Department of Laboratory Medicine and Pathology, Emory University School of Medicine, Atlanta, GA, USA.,Aflac Cancer and Blood Disorders Center, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Anoosha Habibi
- Laboratoire d'Excellence GR-Ex, Paris, France.,Sickle Cell Referral Center, Department of Internal Medicine, Henri-Mondor University Hospital- UPEC, AP-HP, Créteil, France
| | - Pablo Bartolucci
- Sickle Cell Referral Center, Department of Internal Medicine, Henri-Mondor University Hospital- UPEC, AP-HP, Créteil, France
| | - Satheesh Chonat
- Aflac Cancer and Blood Disorders Center, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Jeanne E Hendrickson
- Departments of Laboratory Medicine and Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Sean R Stowell
- Center for Transfusion Medicine and Cellular Therapies, Department of Laboratory Medicine and Pathology, Emory University School of Medicine, Atlanta, GA, USA
| |
Collapse
|
7
|
Lin J, Morrone K, Manwani D, Chernin R, Silver EJ, Shifteh K, Sin S, Arens R, Graw-Panzer K. Association Between Periodic Limb Movements in Sleep and Cerebrovascular Changes in Children With Sickle Cell Disease. J Clin Sleep Med 2019; 15:1011-1019. [PMID: 31383239 DOI: 10.5664/jcsm.7884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 03/14/2019] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Periodic limb movements (PLMs) have been associated with increased risk of stroke, but there is currently scarce research exploring this relationship in the setting of sickle cell disease (SCD). The aim of this study was to explore whether increased PLMs in children with SCD are associated with increased risk of cerebrovascular disease and to determine if there are any clinical or laboratory differences between children with SCD with elevated periodic limb movement index (PLMI) versus those with normal PLMI. METHODS This study is a comprehensive review of medical records of 129 children with SCD (aged ≤ 18 years) who had undergone polysomnography for evaluation of sleep-disordered breathing. RESULTS Elevated PLMI (PLMI > 5 events/h) was present in 42% (54/129) of children with SCD. Children with elevated PLMI were found to have higher percentage of hemoglobin S, lower total iron, higher arousal index and tendency toward elevated transcranial Doppler velocity (P = .063, odds ratio = 3.9, 95% CI 0.93-16.22). While association between elevated PLMI and isolated cerebrovascular stenosis (P = .050, odds ratio 5.6, 95% CI 1.0-31.10) trended toward significance, there was significantly greater proportion of children with elevated PLMI who had cerebrovascular stenosis with Moyamoya disease (P = .046) as demonstrated by magnetic resonance imaging (MRI). CONCLUSIONS The prevalence of elevated PLMI in children with SCD was higher than in previously published data. Elevated PLMI was significantly associated with greater rates of cerebrovascular disease as detected by MRI.
Collapse
Affiliation(s)
- Jenny Lin
- Division of Pediatric Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Kerry Morrone
- Division of Pediatric Hematology and Oncology, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Deepa Manwani
- Division of Pediatric Hematology and Oncology, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Rina Chernin
- Division of Pediatric Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Ellen J Silver
- Division of Academic General Pediatrics, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Keivan Shifteh
- Division of Radiology, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Sanghun Sin
- Division of Pediatric Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Raanan Arens
- Division of Pediatric Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| | - Katharina Graw-Panzer
- Division of Pediatric Respiratory and Sleep Medicine, The Children's Hospital at Montefiore, Albert Einstein College of Medicine, New York, New York
| |
Collapse
|
8
|
Kamyszek RW, Raval JS, Srinivasan AJ, Ansari AK, Evans BA, Rollins‐Raval MA, Poisson JL, Shah NR, Welsby IJ. Interval decline in hemoglobin A is associated with annual clinical event rate in sickle cell anemia patients receiving maintenance apheresis RBC exchange. Transfusion 2019; 59:2622-2628. [DOI: 10.1111/trf.15386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 12/01/2022]
Affiliation(s)
| | - Jay S. Raval
- Department of Pathology and Laboratory Medicine University of North Carolina Chapel Hill North Carolina
| | - Amudan J. Srinivasan
- Department of Surgery University of Pittsburgh Medical Center Pittsburgh Pennsylvania
| | | | | | - Marian A. Rollins‐Raval
- Department of Pathology and Laboratory Medicine University of North Carolina Chapel Hill North Carolina
| | - Jessica L. Poisson
- Department of Pathology Duke University Medical Center Durham North Carolina
| | - Nirmish R. Shah
- Department of Medicine Duke University Medical Center Durham North Carolina
| | - Ian J. Welsby
- Department of Anesthesiology Duke University Medical Center Durham North Carolina
| |
Collapse
|
9
|
Hoppe C, Neumayr L. Sickle Cell Disease: Monitoring, Current Treatment, and Therapeutics Under Development. Hematol Oncol Clin North Am 2019; 33:355-371. [PMID: 31030807 DOI: 10.1016/j.hoc.2019.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Screening and early detection of organ injury, as well as expanded use of red cell transfusion and hydroxyurea in children have changed best practices for clinical care in sickle cell disease. The current standard of care for children with sickle cell disease is discussed through a review of screening recommendations, disease monitoring, and approach to treatment. Novel pharmacologic agents under investigation in clinical trials are also reviewed.
Collapse
Affiliation(s)
- Carolyn Hoppe
- Department of Pediatrics, Division of Hematology/Oncology, UCSF Benioff Children's Hospital Oakland, 747 52nd Street, Oakland, CA 94609, USA.
| | - Lynne Neumayr
- Department of Pediatrics, Division of Hematology/Oncology, UCSF Benioff Children's Hospital Oakland, 747 52nd Street, Oakland, CA 94609, USA
| |
Collapse
|
10
|
Lagunju I, Brown BJ, Oyinlade AO, Asinobi A, Ibeh J, Esione A, Sodeinde OO. Annual stroke incidence in Nigerian children with sickle cell disease and elevated TCD velocities treated with hydroxyurea. Pediatr Blood Cancer 2019; 66:e27252. [PMID: 29797633 DOI: 10.1002/pbc.27252] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 11/11/2022]
Abstract
BACKGROUND Elevated transcranial Doppler (TCD) velocities accurately predict stroke risk in children with sickle cell disease (SCD). Chronic blood transfusion, the gold standard for primary stroke prevention, is faced with numerous challenges in Africa. Hydroxyurea (HU) has been shown to reduce elevated TCD velocities in children with SCD. AIM To determine the effectiveness of HU in reducing the risk of primary stroke in a cohort of Nigerian children with SCD and elevated velocities treated with HU. METHODS Children with SCD and TCD velocities ≥170 cm/sec treated with HU were prospectively followed with 3-monthly TCD and neurological evaluations for ≥12 months to determine the incidence of primary stroke. RESULTS One hundred and four children, 53 males, and 51 females were enrolled into the study. Their ages ranged from 2 to 16 years with a mean of 6 years. At first TCD examination, velocities ranged from 173 to 260 cm/sec with conditional and abnormal risk velocities in 60 (57.7%) and 44 (42.3%) children, respectively. Follow up ranged from 1 to 8 years with a mean of 3.6 years. Mean TCD velocities showed a significant decline from 198.2 (standard deviation [SD] = 15.6) cm/sec to 169.3 (SD = 21.4) cm/sec (P < 0.001). One stroke event occurred in the cohort, giving a stroke incidence of 0.27/100 person years. CONCLUSION HU significantly reduces TCD velocities in Nigerian children with SCD and elevated TCD velocities, with a corresponding reduction in the incidence of primary stroke. HU may represent a potential alternative for primary stroke prevention in low and middle income countries where the burden of SCD resides.
Collapse
Affiliation(s)
- IkeOluwa Lagunju
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria.,Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - B J Brown
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria.,Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - A O Oyinlade
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria.,Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - A Asinobi
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria.,Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - J Ibeh
- Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - A Esione
- Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | - O O Sodeinde
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria
| |
Collapse
|
11
|
Václavů L, Baldew ZAV, Gevers S, Mutsaerts HJMM, Fijnvandraat K, Cnossen MH, Majoie CB, Wood JC, VanBavel E, Biemond BJ, van Ooij P, Nederveen AJ. Intracranial 4D flow magnetic resonance imaging reveals altered haemodynamics in sickle cell disease. Br J Haematol 2017; 180:432-442. [PMID: 29270975 DOI: 10.1111/bjh.15043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/30/2017] [Indexed: 11/28/2022]
Abstract
Stroke risk in children with sickle cell disease (SCD) is currently assessed with routine transcranial Doppler ultrasound (TCD) measurements of blood velocity in the Circle of Willis (CoW). However, there is currently no biomarker with proven prognostic value in adult patients. Four-dimensional (4D) flow magnetic resonance imaging (MRI) may improve risk profiling based on intracranial haemodynamics. We conducted neurovascular 4D flow MRI and blood sampling in 69 SCD patients [median age 15 years (interquartile range, IQR: 12-50)] and 14 healthy controls [median age 21 years (IQR: 18-43)]. We measured velocity, flow, lumen area and endothelial shear stress (ESS) in the CoW. SCD patients had lower haematocrit and viscosity, and higher velocity, flow and lumen area, with lower ESS compared to healthy controls. We observed significant age-related decline in haemodynamic 4D flow parameters; velocity (Spearman's ρ = -0·36 to -0·61), flow (ρ = -0·26 to -0·52) and ESS (ρ = -0·14 to -0·54) in SCD patients. Further analysis in only adults showed that velocity values were similar in SCD patients compared to healthy controls, but that the additional 4D flow parameters, flow and lumen area, were higher, and ESS lower, in the SCD group. Our data suggest that 4D flow MRI may identify adult patients with an increased stroke risk more accurately than current TCD-based velocity.
Collapse
Affiliation(s)
- Lena Václavů
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Zelonna A V Baldew
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Sanna Gevers
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Henri J M M Mutsaerts
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Radiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Karin Fijnvandraat
- Paediatric Haematology, Emma Children's Hospital, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Marjon H Cnossen
- Paediatric Haematology, Erasmus University Hospital-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Charles B Majoie
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - John C Wood
- Paediatric Cardiology, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Ed VanBavel
- Biomedical Engineering and Physics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Bart J Biemond
- Haematology, Internal Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Pim van Ooij
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Aart J Nederveen
- Radiology & Nuclear Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
12
|
Viski S, Olah L. Use of Transcranial Doppler in Intensive Care Unit. ACTA ACUST UNITED AC 2017; 3:99-104. [PMID: 29967879 PMCID: PMC5769900 DOI: 10.1515/jccm-2017-0021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 07/21/2017] [Indexed: 11/25/2022]
Abstract
Use of transcranial Doppler has undergone much development since its introduction in 1982, making the technique suitable for general use in intensive care units. The main application in intensive care units is to assess intracranial pressure, confirm the lack of cerebral circulation in brain death, detect vasospasm in subarachnoid haemorrhage, and monitor the blood flow parameters during thrombolysis and carotid endarterectomy, as well as measuring stenosis of the main intracranial arteries in sickle cell disease in children. This review summarises the use of transcranial Doppler in intensive care units.
Collapse
Affiliation(s)
- Sandor Viski
- Department of Family and Occupational Medicine, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Laszlo Olah
- Department of Neurology, University of Debrecen, Móricz Zs. krt. 22, H-4032, Debrecen, Hungary
| |
Collapse
|
13
|
Rodrigues DLG, Adegoke SA, Campos RDSM, Braga JAP, Figueiredo MS, Silva GS. Patients with sickle cell disease are frequently excluded from the benefits of transcranial doppler screening for the risk of stroke despite extensive and compelling evidence. ARQUIVOS DE NEURO-PSIQUIATRIA 2017; 75:15-19. [DOI: 10.1590/0004-282x20160175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 09/01/2016] [Indexed: 11/22/2022]
Abstract
ABSTRACT Transcranial doppler (TCD) is a strategic component of primary stroke prevention in children with sickle cell disease (SCD). This study was conducted to examine the TCD characteristics of children with SCD in nine different medical centers in Brazil. Methods: Transcranial doppler was performed in accordance with the Stroke Prevention Trial in Sickle Cell Anemia Protocol. Results: Of the 396 patients, 69.5% had homozygous SS hemoglobin. The TCD result was abnormal in 4.8%, conditional in 12.6%, inadequate in 4.3% and abnormally low in 1% of patients. The highest mean flow velocities were 121±23.83cm/s and 124±27.21cm/s in the left and right middle cerebral artery respectively. A total of 28.8% patients (mean age 9.19±5.92 years) were evaluated with TCD for the first time. Conclusions: The SCD patients were evaluated with TCD at an older age, representing an important missed opportunity for stroke prevention. Since TCD screening in patients with SCD is important to detect those at high risk for stroke, it is recommended that this screening should be made more readily available.
Collapse
Affiliation(s)
| | | | | | | | | | - Gisele Sampaio Silva
- Universidade Federal de São Paulo, Brasil; Hospital Israelita Albert Einstein, Brasil
| |
Collapse
|
14
|
D’Andrea A, Conte M, Cavallaro M, Scarafile R, Riegler L, Cocchia R, Pezzullo E, Carbone A, Natale F, Santoro G, Caso P, Russo MG, Bossone E, Calabrò R. Transcranial Doppler ultrasonography: From methodology to major clinical applications. World J Cardiol 2016; 8:383-400. [PMID: 27468332 PMCID: PMC4958690 DOI: 10.4330/wjc.v8.i7.383] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 04/22/2016] [Accepted: 05/27/2016] [Indexed: 02/06/2023] Open
Abstract
Non-invasive Doppler ultrasonographic study of cerebral arteries [transcranial Doppler (TCD)] has been extensively applied on both outpatient and inpatient settings. It is performed placing a low-frequency (≤ 2 MHz) transducer on the scalp of the patient over specific acoustic windows, in order to visualize the intracranial arterial vessels and to evaluate the cerebral blood flow velocity and its alteration in many different conditions. Nowadays the most widespread indication for TCD in outpatient setting is the research of right to left shunting, responsable of so called “paradoxical embolism”, most often due to patency of foramen ovale which is responsable of the majority of cryptogenic strokes occuring in patients younger than 55 years old. TCD also allows to classify the grade of severity of such shunts using the so called “microembolic signal grading score”. In addition TCD has found many useful applications in neurocritical care practice. It is useful on both adults and children for day-to-day bedside assessment of critical conditions including vasospasm in subarachnoidal haemorrhage (caused by aneurysm rupture or traumatic injury), traumatic brain injury, brain stem death. It is used also to evaluate cerebral hemodynamic changes after stroke. It also allows to investigate cerebral pressure autoregulation and for the clinical evaluation of cerebral autoregulatory reserve.
Collapse
|
15
|
Platt MO, Shockey WA. Endothelial cells and cathepsins: Biochemical and biomechanical regulation. Biochimie 2016; 122:314-23. [PMID: 26458976 PMCID: PMC4747805 DOI: 10.1016/j.biochi.2015.10.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/07/2015] [Indexed: 01/12/2023]
Abstract
Cathepsins are mechanosensitive proteases that are regulated not only by biochemical factors, but are also responsive to biomechanical forces in the cardiovascular system that regulate their expression and activity to participate in cardiovascular tissue remodeling. Their elastinolytic and collagenolytic activity have been implicated in atherosclerosis, abdominal aortic aneurysms, and in heart valve disease, all of which are lined by endothelial cells that are the mechanosensitive monolayer of cells that sense and respond to fluid shear stress as the blood flows across the surfaces of the arteries and valve leaflets. Inflammatory cytokine signaling is integrated with biomechanical signaling pathways by the endothelial cells to transcribe, translate, and activate either the cysteine cathepsins to remodel the tissue or to express their inhibitors to maintain healthy cardiovascular tissue structure. Other cardiovascular diseases should now be included in the study of the cysteine cathepsin activation because of the additional biochemical cues they provide that merges with the already existing hemodynamics driving cardiovascular disease. Sickle cell disease causes a chronic inflammation including elevated TNFα and increased numbers of circulating monocytes that alter the biochemical stimulation while the more viscous red blood cells due to the sickling of hemoglobin alters the hemodynamics and is associated with accelerated elastin remodeling causing pediatric strokes. HIV-mediated cardiovascular disease also occurs earlier in than the broader population and the influence of HIV-proteins and antiretrovirals on endothelial cells must be considered to understand these accelerated mechanisms in order to identify new therapeutic targets for prevention.
Collapse
Affiliation(s)
- Manu O Platt
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 950 Atlantic Drive, Suite 3015, Atlanta, GA 30332, USA.
| | - W Andrew Shockey
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 950 Atlantic Drive, Suite 3015, Atlanta, GA 30332, USA.
| |
Collapse
|
16
|
D'Andrea A, Conte M, Scarafile R, Riegler L, Cocchia R, Pezzullo E, Cavallaro M, Carbone A, Natale F, Russo MG, Gregorio G, Calabrò R. Transcranial Doppler Ultrasound: Physical Principles and Principal Applications in Neurocritical Care Unit. J Cardiovasc Echogr 2016; 26:28-41. [PMID: 28465958 PMCID: PMC5224659 DOI: 10.4103/2211-4122.183746] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Transcranial Doppler (TCD) ultrasonography is a noninvasive ultrasound study, which has been extensively applied on both outpatient and inpatient settings. It involves the use of a low-frequency (≤2 MHz) transducer, placed on the scalp, to insonate the basal cerebral arteries through relatively thin bone windows and to measure the cerebral blood flow velocity and its alteration in many different conditions. In neurointensive care setting, TCD is useful for both adults and children for day-to-day bedside assessment of critical conditions including vasospasm in subarachnoid hemorrhage, traumatic brain injury, acute ischemic stroke, and brain stem death. It also allows to investigate the cerebrovascular autoregulation in setting of carotid disease and syncope. In this review, we will describe physical principles underlying TCD, flow indices most frequently used in clinical practice and critical care applications in Neurocritical Unit care.
Collapse
Affiliation(s)
- Antonello D'Andrea
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Marianna Conte
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Raffaella Scarafile
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Lucia Riegler
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Rosangela Cocchia
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Enrica Pezzullo
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Massimo Cavallaro
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Andreina Carbone
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Francesco Natale
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Maria Giovanna Russo
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| | - Giovanni Gregorio
- Department of Cardiology, San Luca Hospital, Vallo della Lucania, Salerno, Italy
| | - Raffaele Calabrò
- Department of Cardiology, Integrated Diagnostic Cardiology, Second University of Neaples, Monaldi Hospital, Neaples, Italy
| |
Collapse
|
17
|
Celik T, Unal S, Ekinci O, Ozer C, Ilhan G, Oktay G, Arica V. Mean Platelet Volume can Predict Cerebrovascular Events in Patients with Sickle Cell Anemia. Pak J Med Sci 2015; 31:203-8. [PMID: 25878644 PMCID: PMC4386187 DOI: 10.12669/pjms.311.4104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 09/15/2014] [Accepted: 09/25/2014] [Indexed: 11/18/2022] Open
Abstract
Objective: The purpose of this study was to determine the impact of mean platelet volume (MPV) on the frequency and severity of vaso-occlusive and cerebrovascular events in patients with sickle cell anemia (SCA). Methods: The 238 cases diagnosed with SCA were evaluated retrospectively with respect to the occurrence of painful crisis for the previous year. The incidence, severity and type of the vaso-occlusive crises of the patients with SCA between March 2010 and March 2011 were recorded. The last MPV values in patients who were free of erythrocyte transfusion for the last three months and who had no current vaso-occlusive crises were evaluated. All the patients were grouped according to the frequency of the crises for the previous year preceding the data collection. Group 1: 1 to 3 crises, Group 2: 4 to 5 and Group 3: 6 or more crises annually. Results: In accordance with the results obtained during the evaluation of the cases diagnosed with sickle-cell anemia, MPV value was found to be significantly higher in patients with cerebrovascular events. Also MPV values increased with increasing incidence of the crises (r=0.297) (p=0.001). Conclusion: One of the contributing factors for this clinical heterogeneity may be related to the MPV values in patients with sickle cell anemia. The higher MPV values may be an early predictor of future cerebrovascular events in patients with sickle cell anemia and may require close follow-up and additional measures.
Collapse
Affiliation(s)
- Tanju Celik
- Tanju Celik, Department of Pediatrics, Mustafa Kemal University, School of Medicine, Hatay, Turkey
| | - Sule Unal
- Sule Unal, Pediatric Hematology Clinic, Antakya State Hospital, Hatay, Turkey
| | - Ozalp Ekinci
- Ozalp Ekinci, Ozalp Ekinci Child and Adolescent Psychiatry Clinic, Hatay, Turkey
| | - Cahit Ozer
- Cahit Ozer, Department of Family Medicine, Mustafa Kemal University, School of Medicine, Hatay, Turkey
| | - Gul Ilhan
- Gul Ilhan, Division of Internal Medicine Hematology Oncology, Antakya State Hospital, Hatay, Turkey
| | - Gonul Oktay
- Gonul Oktay, Department of Blood Disease Center, Antakya State Hospital, Hatay, Turkey
| | - Vefik Arica
- Vefik Arica, Department of Pediatrics, Mustafa Kemal University, School of Medicine, Hatay, Turkey
| |
Collapse
|
18
|
Adewoyin AS. Management of sickle cell disease: a review for physician education in Nigeria (sub-saharan Africa). Anemia 2015; 2015:791498. [PMID: 25667774 PMCID: PMC4312619 DOI: 10.1155/2015/791498] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/18/2014] [Accepted: 12/17/2014] [Indexed: 11/27/2022] Open
Abstract
Sickle cell disease (SCD) predominates in sub-Saharan Africa, East Mediterranean areas, Middle East, and India. Nigeria, being the most populous black nation in the world, bears its greatest burden in sub-Saharan Africa. The last few decades have witnessed remarkable scientific progress in the understanding of the complex pathophysiology of the disease. Improved clinical insights have heralded development and establishment of disease modifying interventions such as chronic blood transfusions, hydroxyurea therapy, and haemopoietic stem cell transplantation. Coupled with parallel improvements in general supportive, symptomatic, and preventive measures, current evidence reveals remarkable appreciation in quality of life among affected individuals in developed nations. Currently, in Nigeria and other West African states, treatment and control of SCD are largely suboptimal. Improved knowledge regarding SCD phenotypes and its comprehensive care among Nigerian physicians will enhance quality of care for affected persons. This paper therefore provides a review on the aetiopathogenesis, clinical manifestations, and management of SCD in Nigeria, with a focus on its local patterns and peculiarities. Established treatment guidelines as appropriate in the Nigerian setting are proffered, as well as recommendations for improving care of affected persons.
Collapse
Affiliation(s)
- Ademola Samson Adewoyin
- Department of Haematology and Blood Transfusion, University of Benin Teaching Hospital, PMB 1111, Benin City, Edo State, Nigeria
| |
Collapse
|
19
|
Milionis H, Papavasileiou V, Eskandari A, D'Ambrogio-Remillard S, Ntaios G, Michel P. Anemia on admission predicts short- and long-term outcomes in patients with acute ischemic stroke. Int J Stroke 2014; 10:224-30. [PMID: 25427291 DOI: 10.1111/ijs.12397] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 08/05/2014] [Indexed: 12/27/2022]
Abstract
BACKGROUND It is still debatable whether anemia predicts stroke outcome. AIM To describe the characteristics of patients with acute ischemic stroke (AIS) and anemia and identify whether hemoglobin status on admission is a prognostic factor of AIS outcome. METHODS All 2439 patients of the Acute Stroke Registry and Analysis of Lausanne (ASTRAL) between January 2003 and June 2011 were selected. Demographics, risk factors, prestroke treatment, clinical, radiological and metabolic variables in patients with and without anemia according to the definition of the World Health Organization were compared. Functional disability and mortality were recorded up to 12 months from admission. RESULTS Anemic patients (17.5%) were older, had lower body mass index, higher rates of coronary artery disease (CAD), atrial fibrillation, diabetes mellitus and peripheral artery disease. Anemia was associated with more severe stroke manifestations, lower systolic and diastolic blood pressure measurements, worse estimated glomerular filtration rate and elevated C-reactive protein concentrations upon admission and with increased modified Rankin scores during the follow-up. Anemic patients had higher 7-day, 3-month and 12-month mortality, which was associated with hemoglobin status and other factors, including age, CAD, stroke severity, and baseline C-reactive levels. Hemoglobin levels were inversely associated with recurrent stroke and mortality throughout the 12-month follow-up. CONCLUSION Anemia is common among AIS patients and is associated with cardiovascular comorbidities. Low hemoglobin status independently predicts short and long-term mortality.
Collapse
Affiliation(s)
- Haralampos Milionis
- Neurology Service, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland; Department of Internal Medicine, School of Medicine, University of Ioannina, Ioannina, Greece
| | | | | | | | | | | |
Collapse
|
20
|
Lagunju I, Sodeinde O, Brown B, Akinbami F, Adedokun B. Transcranial Doppler ultrasonography in children with sickle cell anemia: Clinical and laboratory correlates for elevated blood flow velocities. JOURNAL OF CLINICAL ULTRASOUND : JCU 2014; 42:89-95. [PMID: 24166013 DOI: 10.1002/jcu.22099] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/13/2013] [Accepted: 08/26/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Transcranial Doppler (TCD) sonography of major cerebral arteries is now recommended for routine screening for stroke risk in children with sickle cell disease (SCD). METHODS We performed TCD studies on children with sickle cell anemia (SCA) seen at the pediatric hematology clinic over a period of 2 years. TCD scans were repeated yearly in children with normal flow velocities and every 3 months in children with elevated velocities. Findings were correlated with clinical variables, hematologic indices, and arterial oxygen saturation. Predictors of elevated velocities were identified by multiple linear regressions. RESULTS We enrolled 237 children and performed a total of 526 TCD examinations. Highest time-averaged maximum flow velocities were ≥170 cm/s in 72 (30.3%) cases and ≥200 cm/s in 20 (8.4%). Young age, low hematocrit, low hemoglobin, and arterial oxygen desaturation <95% showed significant correlations with presence of increased cerebral flow velocities. CONCLUSIONS Low hematocrit, low hemoglobin concentration, young age, and low arterial oxygen desaturation predicted elevated cerebral blood flow velocities and, invariably, increased stroke risk, in children with SCA. Children who exhibit these features should be given high priority for TCD examination in the setting of limited resources.
Collapse
Affiliation(s)
- IkeOluwa Lagunju
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria; Department of Paediatrics, University College Hospital, Ibadan, Nigeria
| | | | | | | | | |
Collapse
|
21
|
Naqvi J, Yap KH, Ahmad G, Ghosh J. Transcranial Doppler ultrasound: a review of the physical principles and major applications in critical care. Int J Vasc Med 2013; 2013:629378. [PMID: 24455270 PMCID: PMC3876587 DOI: 10.1155/2013/629378] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 11/10/2013] [Indexed: 12/28/2022] Open
Abstract
Transcranial Doppler (TCD) is a noninvasive ultrasound (US) study used to measure cerebral blood flow velocity (CBF-V) in the major intracranial arteries. It involves use of low-frequency (≤2 MHz) US waves to insonate the basal cerebral arteries through relatively thin bone windows. TCD allows dynamic monitoring of CBF-V and vessel pulsatility, with a high temporal resolution. It is relatively inexpensive, repeatable, and portable. However, the performance of TCD is highly operator dependent and can be difficult, with approximately 10-20% of patients having inadequate transtemporal acoustic windows. Current applications of TCD include vasospasm in sickle cell disease, subarachnoid haemorrhage (SAH), and intra- and extracranial arterial stenosis and occlusion. TCD is also used in brain stem death, head injury, raised intracranial pressure (ICP), intraoperative monitoring, cerebral microembolism, and autoregulatory testing.
Collapse
Affiliation(s)
- Jawad Naqvi
- University Hospital South Manchester, Southmoor Road, Wythenshawe, Manchester M23 9LT, UK
| | - Kok Hooi Yap
- Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK
| | - Gulraiz Ahmad
- Royal Oldham Hospital, Rochdale Road, Manchester OL1 2JH, UK
| | - Jonathan Ghosh
- University Hospital South Manchester, Southmoor Road, Wythenshawe, Manchester M23 9LT, UK
| |
Collapse
|
22
|
The other side of abnormal: a case series of low transcranial Doppler velocities associated with stroke in children with sickle cell disease. J Pediatr Hematol Oncol 2013; 35:543-6. [PMID: 23211694 DOI: 10.1097/mph.0b013e318279caae] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The prevalence of cerebrovascular events in sickle cell disease (SCD) can be as low as 10% by the age of 18 for overt cerebral infarction or strokes, up to 35% for silent cerebral infarction, and as high as 43/100 patient years for acute silent cerebral ischemic events. These events typically occur during childhood with a peak incidence between the age of 4 and 7 years. The cumulative risk of central nervous system events in SCD increases with age. Transcranial Doppler (TCD) ultrasonography is an established screening tool for detecting children with SCD at highest risk for stroke by measuring the flow velocity in the large intracranial vessels. Velocities are considered abnormal with readings >200 cm/s and chronic red cell transfusions are recommended to reduce further risk or progression. Red cell transfusions have reduced the rate of cerebrovascular accidents by 90%. We describe the case of 5 children with sickle cell anemia, whose antecedent screening TCD velocities were measured to be ≤70 cm/s in the study. All patients developed some form of cerebral insults, an overt cerebral infarctions, silent stroke or transient ischemic attack, and are now receiving chronic transfusion to prevent further progression. On the basis of these cases, low TCD velocities may identify another group of children at risk for cerebrovascular disease. We suggest TCD velocities <70 cm/s in major vessels (MCA, ACA, and ICA) be considered another type of "abnormal," prompting more sensitive evaluations (such as a brain MRI and MRA) for the presence of central nervous system disease, and, if negative, decrease intervals between subsequent TCD assessments.
Collapse
|
23
|
McGann PT, Nero AC, Ware RE. Current management of sickle cell anemia. Cold Spring Harb Perspect Med 2013; 3:cshperspect.a011817. [PMID: 23709685 DOI: 10.1101/cshperspect.a011817] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Proper management of sickle cell anemia (SCA) begins with establishing the correct diagnosis early in life, ideally during the newborn period. The identification of affected infants by neonatal screening programs allows early initiation of prophylactic penicillin and pneumococcal immunizations, which help prevent overwhelming sepsis. Ongoing education of families promotes the early recognition of disease-released complications, which allows prompt and appropriate medical evaluation and therapeutic intervention. Periodic evaluation by trained specialists helps provide comprehensive care, including transcranial Doppler examinations to identify children at risk for primary stroke, plus assessments for other parenchymal organ damage as patients become teens and adults. Treatment approaches that previously highlighted acute vaso-occlusive events are now evolving to the concept of preventive therapy. Liberalized use of blood transfusions and early consideration of hydroxyurea treatment represent a new treatment paradigm for SCA management.
Collapse
Affiliation(s)
- Patrick T McGann
- Texas Children's Center for Global Health, Houston, Texas 77030, USA
| | | | | |
Collapse
|
24
|
Karimi M, Haghpanah S, Ashjazadeh N, Shariat A, Nazeri M, Emami S, Forough AA, Petramfar P, Yaghoubi E. Cerebral Artery Velocity Determined by Transcranial Doppler Ultrasonography in Patients With β-Thalassemia Intermedia Compared to β-Thalassemia Major. Clin Appl Thromb Hemost 2013; 19:367-73. [DOI: 10.1177/1076029612461068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We aimed to compare cerebral artery velocity and relevant clinical factors in patients with β-thalassemia intermedia (β-TI), β-thalassemia major (β-TM), and healthy individuals. For this study, 60 patients with β-TM and 64 with β-TI were randomly selected. Sixty healthy adults comprised the control group. Time average maximum mean velocity (TAMMV) was measured in large cerebral arteries with transcranial Doppler (TCD) ultrasonography. In all arteries, TAMMV was significantly higher in the β-TI group than that of β-TM or controls ( P < .001). Patients with β-TM had significantly higher TAMMV than controls in most arteries evaluated ( P < .001). Overall, the lack of regular blood transfusions, splenectomy, and lower age (to a lesser extent) was found to be independent influencing factors contributing to high cerebral artery velocities. Further detailed longitudinal studies are needed to confirm these results and to determine the risk of silent infarction and stroke in patients with thalassemia and abnormal TCD, with particular focus on patients with β-TI.
Collapse
Affiliation(s)
- Mehran Karimi
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sezaneh Haghpanah
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nahid Ashjazadeh
- Department of Neurology, Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abdolhamid Shariat
- Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masoume Nazeri
- Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sajad Emami
- Department of Neurology, Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amin Abolhasani Forough
- Medical Imaging research Center, Department of Radiology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Peyman Petramfar
- Department of Neurology, Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ehsan Yaghoubi
- Department of Neurology, Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
25
|
Lagunju IA, Brown BJ. Adverse neurological outcomes in Nigerian children with sickle cell disease. Int J Hematol 2012; 96:710-8. [PMID: 23129067 DOI: 10.1007/s12185-012-1204-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 10/10/2012] [Accepted: 10/10/2012] [Indexed: 11/30/2022]
Abstract
Sickle cell disease (SCD) is reported to be the most common genetic disorder affecting Nigerians. Children with SCD are at a high risk of neurological morbidity. The main objective of this study was to determine the pattern of adverse neurological outcomes among a cohort of Nigerian children with SCD. All children with SCD seen in the Department of Paediatrics, University College Hospital, Ibadan, Nigeria, over a period of 2 years were carefully evaluated for symptoms and signs of neurological complications, defined as clinical outcomes referable to the central nervous system. Of the 214 children evaluated, 187 were diagnosed with Hb SS disease and 27 with Hb SC disease. Neurological complications were identified in 78 (36.4 %) of the cases. The most common complications were headache (17.8 %), seizure (9.3 %) and stroke (8.4 %). Other less frequent complications included bacterial meningitis (2.8 %), spontaneous visual loss (1.4 %), paraplegia (0.9 %) and transient ischaemic attacks (0.9 %). Neurological complications occurred more frequently in children with sickle cell anaemia than in those with Hb SC disease (P = 0.002, 95 % CI 1.450-82.870). Adverse neurological events are common in Nigerian children with SCD, with a significantly higher risk in Hb SS than Hb SC disease. Stroke represents a major underlying cause of symptomatic epilepsy in SCD. Institution of primary preventive measures for stroke in SCD will significantly reduce the burden of stroke and epilepsy associated with SCD in Nigeria.
Collapse
Affiliation(s)
- I A Lagunju
- Department of Paediatrics, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | | |
Collapse
|
26
|
Mahfoudhi E, Lecluse Y, Driss F, Abbes S, Flaujac C, Garçon L. Red cells exchanges in sickle cells disease lead to a selective reduction of erythrocytes-derived blood microparticles. Br J Haematol 2011; 156:545-7. [PMID: 21988211 DOI: 10.1111/j.1365-2141.2011.08897.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|