keyword
MENU ▼
Read by QxMD icon Read
search

Fetal haemoglobin

keyword
https://www.readbyqxmd.com/read/28880374/skeletal-and-myocardial-microvascular-blood-flow-in-hydroxycarbamide-treated-patients-with-sickle-cell-disease
#1
Vandana Sachdev, Stanislav Sidenko, Melinda D Wu, Caterina P Minniti, Hwaida Hannoush, Cynthia L Brenneman, Myron A Waclawiw, Andrew E Arai, Alan N Schechter, Gregory J Kato, Jonathan R Lindner
In sickle cell disease (SCD), abnormal microvascular function combined with chronic anaemia predisposes patients to perfusion-demand mismatch. We hypothesized that skeletal muscle and myocardial perfusion, normalized to the degree of anaemia, is reduced at basal-state compared to controls, and that this defect is ameliorated by hydroxycarbamide (HC; also termed hydroxyurea) therapy. Twenty-one SCD patients, of whom 15 were treated with HC, and 27 controls underwent contrast-enhanced ultrasound (CEU) perfusion imaging of the forearm as well as the myocardium...
September 7, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28749037/transfusion-for-sickle-cell-disease-in-pregnancy-a-single-centre-survey
#2
J Sharif, L Byrd, K Stevenson, J Raddats, E Morsman, K Ryan
INTRODUCTION: Sickle cell disease in pregnancy carries a high risk of maternal and fetal adverse outcomes. The use of prophylactic transfusions to reduce the risk of sickle complications is controversial. Current UK standards do not recommend the routine use of transfusion for sickle pregnancy. We examined transfusion episodes during sickle pregnancies in a single centre over an 11-year period. METHODS: We conducted a retrospective observational study of all pregnancies in patients with sickle cell disease who attended the joint obstetric/haematology clinic over an 11-year period...
July 27, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28721142/maternal-lipids-associated-with-large-for-gestational-age-birth-weight-in-women-with-type-1-diabetes-results-from-a-prospective-single-center-study
#3
Paweł Gutaj, Ewa Wender-Ożegowska, Jacek Brązert
INTRODUCTION: Despite improvement in diabetes care over the years, the incidence of macrosomia in type 1 diabetic mothers is still very high and even shows an increasing tendency. It is suggested that other factors that maternal hyperglycemia might be associated with excessive fetal growth in diabetic mothers. The aim of this study was to determine whether maternal lipids might contribute to high rates of large-for-gestational-age (LGA) newborns in women with type 1 diabetes (T1DM). MATERIAL AND METHODS: This prospective, single-center study was performed in a population of women with T1DM admitted to the perinatal center for women with diabetes...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28700818/fetal-mca-doppler-to-time-intrauterine-transfusions-in-red-cell-alloimmunisation-a-randomised-trial
#4
Jodie M Dodd, Chad Andersen, Jan E Dickinson, Jennie Louise, Andrea Deussen, Rosalie M Grivell, Liliana Voto, Mark D Kilby, Rory Windrim, Greg Ryan
OBJECTIVES: Red cell alloimmunisation affects up to 0.6% of all live births, and can be successfully treated with intrauterine fetal blood transfusion. Fetal middle cerebral artery (MCA) Doppler peak systolic velocity (PSV) is a non-invasive test, to identify fetal anaemia and requiring intrauterine transfusion (IUT). Traditionally, timing of subsequent IUTs has involved estimating a fall in fetal haematocrit of 1% per day, or a fall in fetal haemoglobin of 0.3 g/dL per day. The aim of this pragmatic multi-centre randomised trial was to evaluate whether Doppler MCA-PSV in the fetus that has undergone one IUT for anaemia secondary to red cell alloimmunisation was non-inferior to timing IUT by timing based on predicting the fall in fetal haematocrit or fetal haemoglobin, without compromising infant haemoglobin at birth...
July 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28689691/variability-of-homozygous-sickle-cell-disease-the-role-of-alpha-and-beta-globin-chain-variation-and-other-factors
#5
Graham R Serjeant, Elliott Vichinsky
The single base molecular substitution characterizing sickle cell haemoglobin, β(6)glu→val, might be expected to result in predictable haematological and clinical features. However, the disease manifests remarkable diversity believed to reflect the interaction with other genetic and environmental factors. Some of the genetic modifiers include the beta globin haplotypes, alpha thalassaemia, factors influencing the persistence of fetal haemoglobin and the effects of the environment are addressed in this review...
June 21, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28643346/red-blood-cells-free-%C3%AE-haemoglobin-pool-a-biomarker-to-monitor-the-%C3%AE-thalassemia-intermedia-variability-the-alphapool-study
#6
Corinne Vasseur, Elisa Domingues-Hamdi, Katia Ledudal, Philippe Le Corvoisier, Caroline Barau, Bijan Ghaleh, Amandine Rialland, Serge Pissard, Frédéric Galactéros, Véronique Baudin-Creuza
The severity of β-thalassaemia (β-thal) intermedia is mainly correlated to the degree of imbalanced α/non α-globin chain synthesis. The phenotypic diversity of β-thal depends on this imbalance and reflects all possible combinations of α- and β-globin genotypes, levels of fetal haemoglobin (HbF) and co-inheritance of other modulating factors. This study aimed to demonstrate the validity of a new surrogate of α/non α-globin biosynthetic ratio by measuring the soluble α-Hb pool in lysed red blood cells...
October 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28593771/-rare-forms-of-feto-fetal-transfusion-in-a-clinical-practice
#7
H Kováčová, D Matura, O Šimetka, J Pannová, P Delongová
OBJECTIVE: To analyze monochorionic twin pregnancies with twin anemia polycythemia sequence (TAPS) and acute peripartal twin to twin syndrome (aTTTS), to compare their prenatal management and perinatal outcome. METHODS: Retrospective analysis of monochorionic biamniotic twin pregnancies without signs of chronic TTTS within a period 10/2010 to 10/2013. Further selection of cases with haemoglobin difference in neonates greater than 50 g/l was made, type of feto-fetal haemorrhage was determined and their prenatal and postnatal characteristics were described...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28503326/incomplete-paraplegia-caused-by-extramedullary-hematopoiesis-in-a-patient-with-thalassemia-intermedia
#8
Nurhasyimah Hisamud-Din, Nadia Mohd Mustafah, Aishah Ahmad Fauzi, Natiara Mohamad Hashim
INTRODUCTION: Extramedullary hematopoiesis (EMH) is the production of blood cell precursors outside the bone marrow that occur in various hematological diseases. In patients with thalassemia intermedia, ineffective erythropoiesis drives compensatory EMH in the liver, pancreas, pleura, spleen, ribs and spine. CASE PRESENTATION: We describe a patient with thalassemia intermedia who presented with acute neurological symptoms caused by paraspinal EMH, which responded well to combination therapy of steroid, hypertransfusion, laminectomy and excision of pseudotumor and hydroxyurea therapy to boost the formation of fetal haemoglobin...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28440316/modest-and-severe-maternal-iron-deficiency-in-pregnancy-are-associated-with-fetal-anaemia-and-organ-specific-hypoxia-in-rats
#9
Andrew G Woodman, Alison S Care, Yael Mansour, Stephana J Cherak, Sareh Panahi, Ferrante S Gragasin, Stephane L Bourque
Prenatal iron-deficiency (ID) is known to alter fetal developmental trajectories, which predisposes the offspring to chronic disease in later life, although the underlying mechanisms remain unclear. Here, we sought to determine whether varying degrees of maternal anaemia could induce organ-specific patterns of hypoxia in the fetuses. Pregnant female Sprague Dawley rats were fed iron-restricted or iron-replete diets to induce a state of moderate (M-ID) or severe ID (S-ID) alongside respective controls. Ultrasound biomicroscopy was performed on gestational day (GD)20 to assess uterine and umbilical artery blood flow patterns...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28426137/hydroxyurea-hydroxycarbamide-for-sickle-cell-disease
#10
REVIEW
Sarah J Nevitt, Ashley P Jones, Jo Howard
BACKGROUND: Sickle cell disease (SCD) is one of the most common inherited diseases worldwide. It is associated with lifelong morbidity and a reduced life expectancy. Hydroxyurea (hydroxycarbamide), an oral chemotherapeutic drug, ameliorates some of the clinical problems of SCD, in particular that of pain, by raising fetal haemoglobin. This is an update of a previously published Cochrane Review. OBJECTIVES: To assess the effects of hydroxyurea therapy in people with SCD (all genotypes), of any age, regardless of setting...
April 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28270033/influence-of-serum-25-hydroxyvitamin-d-on-the-rate-of-pain-episodes-in-nigerian-children-with-sickle-cell-anaemia
#11
Samuel Ademola Adegoke, Oyeku Akibu Oyelami, Adekunle Adekile, Maria Stella Figueiredo
BACKGROUND: In sickle cell disease (SCD), symptoms of vitamin D deficiency (VDD) and chronic pain can overlap. AIM: To examine the relationship between serum vitamin D levels and the frequency of acute pain episodes. METHODS: In this cross-sectional study, serum 25-hydroxyvitamin D (25-OHD) was assayed by high-performance liquid chromatography, and its influence on the number of significant pain episodes was examined by bivariate and logistic regression analyses...
March 8, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28220744/burden-genotype-and-phenotype-profiles-of-adult-patients-with-sickle-cell-disease-in-cape-town-south-africa
#12
G D Pule, K Mnica, M Joubert, S Mowla, N Novitsky, A Wonkam
BACKGROUND: An exponential increase in the number of sickle cell disease (SCD) patients in paediatric services in Cape Town, South Africa, has been reported. The trend in adult/adolescent services has not been investigated. OBJECTIVES: To evaluate epidemiological trends of SCD and the profile of patients affected by SCD attending the Haematology Clinic at Groote Schuur Hospital (GSH), Cape Town. METHODS: (i) A retrospective review of the number of SCD patients over the past 20 years; (ii) a cross-sectional analysis of clinical and haematological characteristics of SCD patients; and (iii) molecular analysis of the haemoglobin S mutation, the haplotype in the β-globin-like genes cluster, the 3...
January 30, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28060419/a-molecular-roadmap-of-definitive-erythropoiesis-from-human-induced-pluripotent-stem-cells
#13
Muhammad A Razaq, Stephen Taylor, David J Roberts, Lee Carpenter
Human induced pluripotent stem cells (hiPSCs) are being considered for use in understanding haematopoietic disorders and as a potential source of in vitro manufactured red cells. Here, we show that hiPSCs are able to recapitulate various stages of developmental erythropoiesis. We show that primitive erythroblasts arise first, express CD31(+) with CD235a(+) , embryonic globins and red cell markers, but fail to express the hallmark red cell transcripts of adult erythropoiesis. When hiPSC-derived CD45(+) CD235a(-) haematopoietic progenitors are isolated on day 12 and further differentiated on OP9 stroma, they selectively express CD36(+) and CD235a(+) , adult erythroid transcripts for transcription factors (e...
March 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/27905102/elevated-fetal-haemoglobin-is-a-predictor-of-better-outcome-in%C3%A2-mds-aml-patients-receiving-5-aza-2-deoxycytidine-decitabine
#14
RANDOMIZED CONTROLLED TRIAL
Michael Lübbert, Gabriele Ihorst, Philipp N Sander, Ljudmila Bogatyreva, Heiko Becker, Pierre W Wijermans, Stefan Suciu, Emmanuel Bissé, Rainer Claus
Although azanucleoside DNA-hypomethylating agents (HMAs) are routinely used for the treatment of myelodysplastic syndrome/acute myeloid leukaemia (MDS/AML), very few outcome predictors have been established. Expression of the β-like globin gene locus is tightly regulated by DNA methylation, is HMA-sensitive in vitro, and fetal haemoglobin (HbF) expression is under study as a potential biomarker for response of MDS patients to azacitidine. We determined HbF expression in 16 MDS and 36 AML patients receiving decitabine (DAC)...
February 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/27812304/a-comparative-evaluation-of-the-analytical-performances-of-capillarys-2-flex-piercing-tosoh-hlc-723-g8-premier-hb9210-and-roche-cobas-c501-tina-quant-gen-2-analyzers-for-hba1c-determination
#15
COMPARATIVE STUDY
Xiaobin Wu, Yan Chao, Zemin Wan, Yunxiu Wang, Yan Ma, Peifeng Ke, Xinzhong Wu, Jianhua Xu, Junhua Zhuang, Xianzhang Huang
INTRODUCTION: Haemoglobin A1c (HbA1c) is widely used in the management of diabetes. Therefore, the reliability and comparability among different analytical methods for its detection have become very important. MATERIALS AND METHODS: A comparative evaluation of the analytical performances (precision, linearity, accuracy, method comparison, and interferences including bilirubin, triglyceride, cholesterol, labile HbA1c (LA1c), vitamin C, aspirin, fetal haemoglobin (HbF), and haemoglobin E (Hb E)) were performed on Capillarys 2 Flex Piercing (Capillarys 2FP) (Sebia, France), Tosoh HLC-723 G8 (Tosoh G8) (Tosoh, Japan), Premier Hb9210 (Trinity Biotech, Ireland) and Roche Cobas c501 (Roche c501) (Roche Diagnostics, Germany)...
October 15, 2016: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/27805787/cerebral-haemodynamic-response-to-somatosensory-stimulation-in-near-term-fetal-sheep
#16
S Nakamura, D W Walker, F Y Wong
KEY POINTS: Cerebral haemodynamic response to neural stimulation has been extensively investigated in animal and clinical studies, in both adult and paediatric populations, but little is known about cerebral haemodynamic functional response in the fetal brain. The present study describes the cerebral haemodynamic response measured by near-infrared spectroscopy to somatosensory stimulation in fetal sheep. The cerebral haemodynamic response in the fetal sheep brain changes from a positive (increase in oxyhaemoglobin (oxyHb)) response pattern to a negative or biphasic response pattern when the duration of somatosensory stimulation is increased, probably due to cerebral vasoconstriction with prolonged stimulations...
February 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/27796853/newborn-screening-for-sickle-cell-disease-in-jamaica-logistics-and-experience-with-umbilical-cord-samples
#17
G R Serjeant, B E Serjeant, K P Mason, R Gardner, L Warren, F Gibson, M Coombs
The study aims to describe the logistics and results of a programme for newborn screening for sickle cell disease based on samples from the umbilical cord. Samples were dried on Guthrie cards and analysed by high pressure liquid chromatography. All suspected clinically significant abnormal genotypes were confirmed by age 4-6 weeks with family studies and then recruited to local sickle cell clinics. The programme has screened 66,833 samples with the sickle cell trait in 9.8 % and the HbC trait in 3.8 %. Sickle cell syndromes occurred in 407 babies (204 SS, 148 SC, 35 Sbeta(+) thalassaemia, 6 Sbeta(o) thalassaemia, 6 sickle cell-variants, 8 sickle cell-hereditary persistence of fetal haemoglobin) and HbC syndromes in 42 (22 CC, 14 Cbeta(+) thalassaemia, 1 Cbeta(o) thalassaemia, 5 HbC- hereditary persistence of fetal haemoglobin)...
January 2017: Journal of Community Genetics
https://www.readbyqxmd.com/read/27704657/spontaneous-haemoperitoneum-in-pregnancy-and-endometriosis-a-case-series
#18
McI Lier, R F Malik, Jhtm van Waesberghe, J W Maas, D A van Rumpt-van de Geest, S F Coppus, J P Berger, B B van Rijn, P F Janssen, M A de Boer, Jip de Vries, F W Jansen, I A Brosens, C B Lambalk, V Mijatovic
OBJECTIVE: To report pregnancy outcomes of SHiP (spontaneous haemoperitoneum in pregnancy) and the association with endometriosis. DESIGN: Retrospective case note review. SETTING: Dutch referral hospitals for endometriosis. SAMPLE: Eleven women presenting with 15 events of SHiP. METHODS: In collaboration with the Dutch Working Group on Endometriosis, unpublished cases of SHiP that occurred in the Netherlands between 2010 and 2015 were retrieved...
January 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27639606/glycemic-control-and-maternal-and-fetal-outcomes-in-pregnant-women-with-type-1-diabetes-according-to-the-type-of-basal-insulin
#19
A Chico, L Herranz, R Corcoy, O Ramírez, M M Goya, J Bellart, S González-Romero, M Codina, P Sánchez, A Cortázar, D Acosta, M J Picón, J A Rubio, A Megía, M A Sancho, M Balsells, E Solá, N L González, J López-López
OBJECTIVE: To examine the potential role of the type of basal insulin on glycemic control and maternal and foetal outcomes in pregnant women with type 1 diabetes (T1DM). STUDY DESIGN: Retrospective cohort study of pregnancies attended at 18 Spanish tertiary hospitals. INCLUSION CRITERIA: T1DM, singleton pregnancies, delivery between 2002-2010, and use of the same basal and prandial insulin from before pregnancy until delivery. RESULTS: A total of 1534 pregnancies were included...
November 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27604981/hydroxycarbamide-treatment-and-brain-mri-mra-findings-in-children-with-sickle-cell-anaemia
#20
Kerri A Nottage, Russell E Ware, Banu Aygun, Matthew Smeltzer, Guolian Kang, Joseph Moen, Winfred C Wang, Jane S Hankins, Kathleen J Helton
Silent cerebral infarction (SCI) is the most common neurological abnormality among children with sickle cell anaemia (SCA). The effect of hydroxycarbamide (also termed hydroxyurea) on the development and progression of SCI is unclear. We evaluated brain magnetic resonance imaging/angiography (MRI/MRA) in children with SCA receiving long-term hydroxycarbamide therapy. Fifty participants (median 9·4 years, range 1·1-17·3) enrolled in the Hydroxyurea Study of Long-Term Effects (HUSTLE; NCT00305175) underwent brain MRI/MRA and laboratory evaluations before hydroxycarbamide initiation and after 3 and 6 years of treatment to maximum tolerated dose...
October 2016: British Journal of Haematology
keyword
keyword
30252
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"