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Pediatric Sickle Cell

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https://www.readbyqxmd.com/read/29134776/acute-chest-syndrome-among-children-hospitalized-with-vaso-occlusive-crisis-a-nationwide-study-in-the-united-states
#1
Takuto Takahashi, Yusuke Okubo, Atsuhiko Handa
PURPOSE: Acute chest syndrome (ACS) is a common complication among pediatric inpatients with sickle cell disease and vaso-occlusive crisis (VOC). However, little is known about the factors associated with ACS complication. The present study assessed the epidemiological features of children hospitalized with VOC and ascertained factors associated with ACS complication. METHODS: Hospital discharge records of patients with VOC aged <20 years were obtained for the years 2003, 2006, 2009, and 2012 from the Kids' Inpatient Database...
November 14, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29117957/nocturnal-oxyhemoglobin-desaturation-and-arteriopathy-in-a-pediatric-sickle-cell-disease-cohort
#2
Nomazulu Dlamini, Dawn E Saunders, Michael Bynevelt, Sara Trompeter, Timothy C Cox, Romola S Bucks, Fenella J Kirkham
OBJECTIVE: The purpose of this study of sickle cell disease (SCD) was to determine whether arteriopathy, measurable as intracranial vessel signal loss on magnetic resonance angiography (MRA), was associated with low nocturnal hemoglobin oxygen saturation (SpO2) or hemolytic rate, measurable as reticulocytosis or unconjugated hyperbilirubinemia. METHODS: Ninety-five East London children with SCD without prior stroke had overnight pulse oximetry, of whom 47 (26 boys, 39 hemoglobin SS; mean age 9...
November 8, 2017: Neurology
https://www.readbyqxmd.com/read/29115052/dose-selection-based-on-modeling-and-simulation-for-rivipansel-in-pediatric-patients-aged-6-to-11-years-with-sickle-cell-disease
#3
Brinda K Tammara, Lutz O Harnisch
This modeling and simulation exercise aimed to provide dosing recommendations for rivipansel phase 3 studies in children aged 6 to 11 years with sickle cell disease (SCD). Pharmacokinetic data from 109 patients aged 12 to 51 years who received rivipansel (2-40 mg/kg) in previous studies (3 phase 1, one phase 2) were integrated to build a 3-compartmental simulation model. Renal clearance simulations across the age range accounted for renal function development and postulated hyperfiltration in SCD. Simulated demographic distributions for the pediatric SCD population were used to predict concentration-time profiles from 3 dosing regimens, which were then compared against efficacious average steady-state concentrations observed in phase 2...
November 8, 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/29107441/real-life-experience-with-hydroxyurea-in-sickle-cell-disease-a-multicenter-study-in-a-cohort-of-patients-with-heterogeneous-descent
#4
Paolo Rigano, Lucia De Franceschi, Laura Sainati, Antonio Piga, Frédéric B Piel, Maria Domenica Cappellini, Carmelo Fidone, Nicoletta Masera, Giovanni Palazzi, Barbara Gianesin, Gian Luca Forni
We conducted the first nation-wide cohort study of sickle cell disease (SCD) in Italy, a Southern European country exposed to intense recent flux migration from endemic areas for SCD. We evaluate the impact of hydroxyurea on a total of 652 pediatric and adult patients from 33 Reference Centers for SCD (mean age 24.5±15years, 51.4% males). Hydroxyurea median treatment duration was 7years (range: <1year to 29years) at a mean therapeutic dose of 18±4.7mg/kg/day. Hydroxyurea was associated with a significant increase in mean total and fetal hemoglobin and a significant decrease in mean hemoglobin S, white blood and platelet counts, and lactate dehydrogenase levels...
October 9, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29104118/clinical-trial-conduct-in-special-populations-and-developing-regions-an-overview-of-the-dove-study-in-pediatric-patients-with-sickle-cell-disease
#5
Stephen G Reams, Linda Messana, Patricia B Brown, Kevin Nanry, Alexandria E Gunnell
Clinical trials conducted in unique patient populations or individuals with rare diseases are typically hampered by limitations in availability of qualified patients, requiring sponsors to broaden their global outreach to achieve enrollment. Engaging clinical study centers in developing regions may offer access to a substantially larger patient pool. However, they provide a unique set of challenges based on local cultures and requirements. The DOVE study (Determining effects Of platelet inhibition on Vaso-occlusive Events) was a clinical trial of prasugrel hydrochloride (prasugrel) in pediatric patients (aged 2 to <18years) with sickle cell anemia...
November 2, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29103427/neuroinflammation-in-ischemic-pediatric-stroke
#6
Maja Steinlin
Over the last decades, the importance of inflammatory processes in pediatric stroke have become increasingly evident. Ischemia launches a cascade of events: activation and inhibition of inflammation by a large network of cytokines, adhesion and small molecules, protease, and chemokines. There are major differences in the neonatal brain compared to adult brain, but developmental trajectories of the process during childhood are not yet well known. In neonatal stroke ischemia is the leading pathophysiology, but infectious and inflammatory processes have a significant input into the course and degree of tissue damage...
August 2017: Seminars in Pediatric Neurology
https://www.readbyqxmd.com/read/29100978/cd209-336a-g-promotor-polymorphism-and-its-clinical-associations-in-sickle-cell-disease-egyptian-pediatric-patients
#7
Rasha Abdel-Raouf Afifi, Dina Kamal, Riham El Sayed, Sherif M M Ekladious, Gehan H Shaheen, Sherif M Yousry, Rania Elsayed Hussein
OBJECTIVES: To detect the frequency of CD209 A>G polymorphism in sickle cell disease (SCD) Egyptian patients and to evaluate the use of CD209 A>G polymorphism as a genetic predictor of SCD clinical heterogeneity. METHODS: A total of 100 Egyptian children with SCD and 100 Egyptian controls were tested for CD209 A>G polymorphism and were followed up prospectively between June 2012 and December 2014. RESULTS: Comparison of CD209 A>G polymorphism among cases and controls did not show statistically significant difference (p = ...
October 26, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/29048590/family-functioning-medical-self-management-and-health-outcomes-among-school-aged-children-with-sickle-cell-disease-a-mediation-model
#8
Alexandra M Psihogios, Lauren C Daniel, Reem Tarazi, Kim Smith-Whitley, Chavis A Patterson, Lamia P Barakat
Background: Informed by the Pediatric Self-Management Model, the present study tested relationships between parent and family functioning, sickle cell disease (SCD) self-management, and health outcomes for children with SCD. Method: 83 children with SCD and a parent completed baseline data as part of a larger investigation of a family-based, problem-solving intervention for children with SCD (M age = 8.47). Youth and parents completed a measure of child health-related quality of life (HRQOL), and parents completed measures of family efficacy, parenting stress, and SCD self-management...
September 26, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/28944997/desire-for-parenthood-and-reproductive-health-knowledge-in-adolescents-and-young-adults-with-sickle-cell-disease-and-their-caregivers
#9
Leena Nahata, Nicole M Caltabellotta, Kyle Ball, Sarah H O'Brien, Susan E Creary
BACKGROUND/OBJECTIVE: Sickle cell disease (SCD) and hydroxyurea have implications for fertility and reproductive health. The goal of this study was to examine desire for parenthood and reproductive health knowledge among a cohort of adolescent and young adult (AYA) with SCD receiving hydroxyurea and their caregivers at a large pediatric academic center. METHODS: Patients with SCD were approached from September 2016 to July 2017 if they were: (1) 12-20 years old, (2) prescribed hydroxyurea for at least 6 months, (3) proficient in English, and (4) accompanied by a caregiver who was proficient in English and willing to participate...
September 25, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28933357/risk-of-asymptomatic-bacteriuria-among-people-with-sickle-cell-disease-in-accra-ghana
#10
Eric S Donkor, Jonathan A Osei, Isaac Anim-Baidoo, Samuel Darkwah
Asymptomatic bacteriuria (ASB) is benign except in certain medical conditions such as pregnancy and immunosuppression. In Ghana, there are hardly any studies on urinary infections among sickle cell disease (SCD) patients, and the few studies carried out in Africa focused on pediatric SCD populations. The current study aimed to investigate the risk of ASB among SCD patients at a tertiary hospital in Ghana. This was a cross-sectional study involving 110 SCD patients and 110 age and sex matched healthy controls...
February 15, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/28911832/association-of-silent-infarcts-in-sickle-cell-anemia-with-decreased-annexin-a5-resistance
#11
Kerry A Morrone, Lydia H Pecker, Jacob Rand, Jennifer Davila, Suzette Oyeku, Jane A Little, Xue Xiaonan, Deepa Manwani
BACKGROUND: Sickle cell anemia (SCA) is characterized by abnormally shaped, adhesive RBCs that interact with white blood cells and the endothelium, leading to chronic hemolysis, vasculopathy and a prothrombotic state. About 10% of subjects with a thrombotic event in the general population will have an associated antiphospholipid (aPL) antibody. One proposed mechanism for the thrombophilic nature of aPL antibodies is the disruption of the potent anticoagulant annexin A5 or Annexin A5 resistance (A5R)...
September 4, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28904678/-epidemiological-profile-of-hemoglobinopathies-a-cross-sectional-and-descriptive-index-case-study
#12
Fatima Dahmani, Souad Benkirane, Jaafar Kouzih, Aziz Woumki, Hassan Mamad, Azlarab Masrar
Hemoglobinopathies are congenital disorders resultimg from hemoglobin abnormalities. Major forms are often severe, their management is difficult and associated with a great psychosocial impact on patients and their families. They are classified as rare diseases and are still insufficiently known by health professionals. This lack of knowledge is at the origin of diagnostic errors, delay in their management and therefore high morbidity and mortality rate for these patients. In 2008, the World Health Organization (WHO) has published data on hemoglobinopathies epidemiology: more than 330...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28902183/patient-characteristics-affect-the-response-to-ketamine-and-opioids-during-the-treatment-of-vaso-occlusive-episode-related-pain-in-sickle-cell-disease
#13
Raissa Nobrega, Kathy A Sheehy, Caroline Lippold, Amy L Rice, Julia C Finkel, Zenaide M N Quezado
BackgroundN-methyl-D-aspartate receptor activation has been implicated in the pathobiology of inflammatory, nociceptive and neuropathic pain, opioid tolerance, opioid-induced hyperalgesia, and central sensitization. Some of those mechanisms underlie sickle cell disease(SCD)-associated pain.MethodsWe conducted an exploratory cohort study of SCD patients who during vaso-occlusive episodes (VOEs) received subanesthetic doses of the N-methyl-D-aspartate receptor antagonist, ketamine, as an adjunct to opioids. We sought to identify predictors of changes in pain scores and of the percentage of ketamine infusions associated with meaningful changes (≥20% reduction) in pain and opioid consumption...
September 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28892533/association-of-guideline-adherent-antibiotic-treatment-with-readmission-of-children-with-sickle-cell-disease-hospitalized-with-acute-chest-syndrome
#14
David G Bundy, Troy E Richardson, Matthew Hall, Jean L Raphael, David C Brousseau, Staci D Arnold, Ram V Kalpatthi, Angela M Ellison, Suzette O Oyeku, Samir S Shah
Importance: Acute chest syndrome (ACS) is a common, serious complication of sickle cell disease (SCD) and a leading cause of hospitalization and death in both children and adults with SCD. Little is known about the effectiveness of guideline-recommended antibiotic regimens for the care of children hospitalized with ACS. Objectives: To use a large, national database to describe patterns of antibiotic use for children with SCD hospitalized for ACS and to determine whether receipt of guideline-adherent antibiotics was associated with lower readmission rates...
September 11, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28884840/hydroxycarbamide-in-children-with-sickle-cell-anemia-after-first-dose-vs-chronic-therapy-pharmacokinetics-and-predictive-models-for-drug-exposure
#15
Jeremie H Estepp, Paweł Wiczling, Joseph Moen, Guolian Kang, Joana Marie Mack, Robert Liem, Julie A Panepinto, Uttam Garg, Gregory Kearns, Kathleen A Neville
AIMS: The purpose of this work was to (1) compare pharmacokinetic (PK) parameters for hydroxycarbamide in children receiving their first dose (HCnew ) versus those receiving chronic therapy (HCchronic ), (2) assess the external validity of a published PK dosing strategy, and (3) explore the accuracy of dosing strategies based on a limited number of HC measurements. METHODS: Utilizing data from two prospective, multicenter trials of hydroxycarbamide (Pharmacokinetics of Liquid Hydroxyurea in Pediatric Patients with Sickle Cell Anemia; NCT01506544 and Single-Dose (SD) and Steady-State (SS) Pharmacokinetics of Hydroxyurea in Children and Adolescents with Sickle Cell Disease), plasma drug concentration versus time profiles were evaluated with a model independent approach in the HCnew and HCchronic groups...
September 8, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28884421/assessing-responsiveness-over-time-of-the-promis-%C3%A2-pediatric-symptom-and-function-measures-in-cancer-nephrotic-syndrome-and-sickle-cell-disease
#16
Bryce B Reeve, Lloyd J Edwards, Byron C Jaeger, Pamela S Hinds, Carlton Dampier, Debbie S Gipson, David T Selewski, Jonathan P Troost, David Thissen, Vaughn Barry, Heather E Gross, Darren A DeWalt
PURPOSE: Previous studies provided evidence for the validity of the PROMIS Pediatric measures in cross-sectional studies. This study evaluated the ability of the PROMIS Pediatric measures to detect change over time in children and adolescents with cancer, nephrotic syndrome (NS), or sickle cell disease (SCD). METHODS: Participants (8-17 years) completed measures of fatigue, pain interference, anger, anxiety, depressive symptoms, mobility, upper extremity, and peer relationships at three or four time points (T1-T4)...
September 7, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28868627/hydroxyurea-prescription-availability-and-use-for-children-with-sickle-cell-disease-in-italy-results-of-a-national-multicenter-survey
#17
Raffaella Colombatti, Giovanni Palazzi, Nicoletta Masera, Lucia Dora Notarangelo, Elisa Bonetti, Piera Samperi, Angelica Barone, Silverio Perrotta, Elena Facchini, Maurizio Miano, Giovanni Carlo Del Vecchio, Maria Elena Guerzoni, Paola Corti, Federica Menzato, Simone Cesaro, Maddalena Casale, Paolo Rigano, Gian Luca Forni, Giovanna Russo, Laura Sainati
BACKGROUND: The number of patients with sickle cell disease (SCD) has increased in Italy in the past decade due to immigration. In spite of the established efficacy of hydroxyurea (HU) in childhood, population-based data regarding its prescription and effectiveness come mainly from studies performed in adults or outside Europe. POPULATION AND METHODS: The Hydroxyurea in SCD: A Large Nation-wide Cohort Study from Italy was a retrospective cohort study of adult and pediatric patients with SCD attending 32 centers...
September 4, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28860042/optical-coherence-tomography-angiography-and-ultra-widefield-fluorescein-angiography-for-early-detection-of-adolescent-sickle-retinopathy
#18
Daniel A Pahl, Nancy S Green, Monica Bhatia, Margaret T Lee, Jonathan S Chang, Maureen Licursi, Courtney Briamonte, Elana Smilow, Royce W S Chen
PURPOSE: Based on standard screening techniques, sickle retinopathy reportedly occurs in 10% of adolescents with sickle cell disease (SCD). We performed a prospective, observational clinical study to determine if ultra-widefield fluorescein angiography (UWFA), spectral-domain optical coherence tomography (SD-OCT), and optical coherence tomography angiography (OCT-A) detect more-frequent retinopathy in adolescents with SCD. DESIGN: Cross-sectional study. METHODS: Setting: Institutional...
November 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28859033/longitudinal-analysis-of-echocardiographic-abnormalities-in-children-with-sickle-cell-disease
#19
Jamie K Harrington, Usha Krishnan, Zhezhen Jin, Christopher Mardy, Serge Kobsa, Margaret T Lee
BACKGROUND: Cardiac abnormalities have been described in echocardiograms of children with sickle cell disease (SCD). However, longitudinal studies investigating progression of echocardiographic abnormalities across the pediatric age spectrum in SCD are lacking. METHODS: A retrospective longitudinal analysis of 829 echocardiograms from pediatric patients with SCD at steady-state was performed. Left heart parameters included left ventricular end-systolic, end-diastolic diameters, fractional shortening, and mass...
October 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28852282/the-bone-pain-crisis-of-sickle-cell-disease-and-malaria-observations-from-gujarat-india
#20
Jyotish Patel, Bharati Patel, Graham R Serjeant
BACKGROUND: Sickle cell disease is a common problem across central India, but its clinical features may differ from that in African populations. There is a need to define the features of sickle cell disease in India, and the current study addresses some features of the bone pain crisis. OBJECTIVES: The objective of the study was to describe the epidemiology of the bone pain crisis of sickle cell disease in Gujarat and explore the relationship with infection by Plasmodium vivax...
July 2017: Indian Journal of Community Medicine
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