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https://www.readbyqxmd.com/read/28104703/risk-factors-for-mortality-in-adult-patients-with-sickle-cell-disease-a-meta-analysis-of-studies-in-north-america-and-europe
#1
Poulami Maitra, Melissa Caughey, Laura Robinson, Payal C Desai, Susan Jones, Mehdi Nouraie, Mark T Gladwin, Alan Hinderliter, Jianwen Cai, Kenneth I Ataga
Although recent studies show an improved survival of children with sickle cell disease in the US and Europe, mortality remains high for adult patients. This study was conducted to evaluate the factors associated with mortality in adult patients following the approval of hydroxyurea. We first evaluated the association between selected variables and mortality at an academic center (UNC cohort). Data sources were then searched for publications from 1998 to June, 2016, with meta-analysis of eligible studies conducted in North America and Europe to evaluate the associations of selected variables with mortality in adult patients...
January 19, 2017: Haematologica
https://www.readbyqxmd.com/read/28099399/the-association-of-serum-25-hydroxyvitamin-d-with-biomarkers-of-hemolysis-in-pediatric-patients-with-sickle-cell-disease
#2
Samuel A Adegoke, Josefina A P Braga, Adekunle D Adekile, Maria S Figueiredo
Although vitamin D deficiency (VDD) has been linked to anemia among sickle cell disease (SCD), its relationship with hemolysis is unclear. Serum 25-hydroxyvitamin D and biomarkers of hemolysis (hemoglobin [Hb]/hematocrit, reticulocyte percentage, absolute reticulocyte, and lactate dehydrogenase [LDH] levels) in 36 hydroxyurea-naive SCD children were quantified. Correlations were significantly positive with Hb/hematocrit (r=0.40, P=0.017; r=0.45, P=0.006, respectively); inverse with reticulocyte percentage, absolute reticulocyte, and LDH (r=-0...
January 17, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28098787/pathological-impairment-cell-cycle-arrest-and-apoptosis-of-thymus-and-bursa-of-fabricius-induced-by-aflatoxin-contaminated-corn-in-broilers
#3
Xi Peng, Shiping Bai, Xuemei Ding, Keying Zhang
This study aimed to evaluate the comparative effects of aflatoxin-contaminated corn on the thymus and bursa of Fabricius (BF) in chickens by detecting histopathological lesions, cell cycle phase distribution and apoptosis. A total of 900 COBB500 male broilers were randomly allocated into five groups. The experiment lasted for six weeks and the five dietary treatments consisted of uncontaminated corn (control), 25% contaminated corn, 50% contaminated corn, 75% contaminated corn and 100% contaminated corn groups...
January 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28096331/one-step-design-of-a-stable-variant-of-the-malaria-invasion-protein-rh5-for-use-as-a-vaccine-immunogen
#4
Ivan Campeotto, Adi Goldenzweig, Jack Davey, Lea Barfod, Jennifer M Marshall, Sarah E Silk, Katherine E Wright, Simon J Draper, Matthew K Higgins, Sarel J Fleishman
Many promising vaccine candidates from pathogenic viruses, bacteria, and parasites are unstable and cannot be produced cheaply for clinical use. For instance, Plasmodium falciparum reticulocyte-binding protein homolog 5 (PfRH5) is essential for erythrocyte invasion, is highly conserved among field isolates, and elicits antibodies that neutralize in vitro and protect in an animal model, making it a leading malaria vaccine candidate. However, functional RH5 is only expressible in eukaryotic systems and exhibits moderate temperature tolerance, limiting its usefulness in hot and low-income countries where malaria prevails...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095473/the-asymmetric-cell-division-regulators-par3-scribble-and-pins-gpsm2-are-not-essential-for-erythroid-development-or-enucleation
#5
Christina B Wölwer, Nathan Gödde, Luke B Pase, Imogen A Elsum, Krystle Y B Lim, Faruk Sacirbegovic, Carl R Walkley, Sarah Ellis, Shigeo Ohno, Fumio Matsuzaki, Sarah M Russell, Patrick O Humbert
Erythroid enucleation is the process by which the future red blood cell disposes of its nucleus prior to entering the blood stream. This key event during red blood cell development has been likened to an asymmetric cell division (ACD), by which the enucleating erythroblast divides into two very different daughter cells of alternate molecular composition, a nucleated cell that will be removed by associated macrophages, and the reticulocyte that will mature to the definitive erythrocyte. Here we investigated gene expression of members of the Par, Scribble and Pins/Gpsm2 asymmetric cell division complexes in erythroid cells, and functionally tested their role in erythroid enucleation in vivo and ex vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28089659/corrigendum-to-unambiguous-determination-of-plasmodium-vivax-reticulocyte-invasion-by-flow-cytometry-int-j-parasitol-46-2016-31-39
#6
Jee-Sun Cho, Bruce Russell, Varakorn Kosaisavee, Rou Zhang, Yves Colin, Olivier Bertrand, Rajesh Chandramohanadas, Cindy S Chu, Francois Nosten, Laurent Renia, Benoit Malleret
No abstract text is available yet for this article.
January 13, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28088966/-delayed-hematologic-response-to-immunosuppressive-therapy-in-severe-aplastic-anemia
#7
Y Yang, W R Yang, Z J Wu, X Zhao, L Zhang, L P Jing, K Zhou, Y Li, G X Peng, Y Li, J P Li, L Song, L Ye, H H Fan, F K Zhang
Objective: To explore the characteristics of delayed hematologic response in very/severe aplastic anemia (V/SAA) patients who were treated with immunosuppressive treatment (IST) as first-line approach, and investigate the rationality of early salvage treatment in refractory patients. Methods: The data of V/SAA patients front-line treated with IST were retrospectively analyzed. Delayed response was defined as acquiring hematologic response between 6 and 12 months after 1 course of IST. The clinical as well as hematologic characteristics of the delayed responded patients were investigated...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28078434/a-retrospective-open-label-uncontrolled-study-of-epoetin-zeta-on-the-treatment-of-chemotherapy-induced-anemia-in-solid-tumors
#8
Constantinos E Alifieris, Kyriakos Orfanakos, Aristina Papanota, George P Stathopoulos, Nikolaos Sitaras, Dimitrios T Trafalis
PURPOSE: This is a single-center uncontrolled retrospective study to evaluate the efficacy and safety of the biosimilar epoetin zeta after approval in chemotherapy-induced anemia (CIA). METHODS: Patients screened were >18 years old suffering from solid malignancies and CIA with Hg ≤10 or <11 g/dl if symptomatic anemia. Patients had measurable disease by TNM and Eastern Cooperative Oncology Group (ECOG). Patients were treated for at least 12 weeks and the primary endpoint was to determine the incidence of blood transfusions, and secondarily, the overall safety and efficacy defined as ≥1 g/dl rise in Hb concentration or ≥40,000 cells/μl rise in reticulocyte count...
January 11, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28073728/biermer-anemia-hematologic-characteristics-of-66-patients-in-a-clinical-hematology-unit-at-senegal
#9
F Seynabou, N Fatou Samba Diago, D Oulimata Diop, S Abibatou Fall, D Nafissatou
Hematological manifestations can lead to diagnosis of pernicious anemia, also known as Biermer disease and Biermer anemia. This disease has been little studied among black Africans. Our aim is to describe its diagnostic and therapeutic aspects and outcome in our practice. This descriptive study retrospectively examined the records of 66 patients with pernicious anemia seen at the Clinical Hematology Unit of Le Dantec Hospital in Senegal from January 1, 2000, to June 30, 2014. Symptoms were anemic syndrome (40 cases), hemolytic anemia (13), anemic heart failure (7), isolated pallor of the mucous membranes (5), and venous thrombosis (2)...
November 1, 2016: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28070107/effects-of-reduced-food-intake-for-4-weeks-on-physiological-parameters-in-toxicity-studies-in-dogs
#10
Junya Morita, Tomoko Izumi, Bunichiro Ogawa, Yoshiki Ban, Hironori Takagi, Minoru Sasaki, Shunsuke Tsutsumi
This study sought to clarify the effects of reduced feeding on physiological parameters in dogs to enable appropriate evaluations of the safety and toxicity of test compounds. We measured alkaline phosphatase isozymes and the circulating blood volume, as well as clinical signs, body weight, hematology, blood chemistry, electrocardiography, organ weight, and histopathology, in male beagle dogs fed a diet consisting of 300 g/day or 150 g/day for 4 weeks. There were no abnormal clinical signs in any of the dogs...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28050380/coincidental-finding-of-beta-thalassaemia-minor-in-a-patient-of-lacquer-thinner-poisoning-presenting-as-methaemoglobinemia
#11
Charu Agarwal, Anisha Mohanpuria, Gurdeep Buxi, Vijay Kumar
Lacquer thinner, commonly used for removing household paints, is known to contain various aromatic hydrocarbons and naphtha; if ingested, may cause methaemoglobinemia. We report a case of 13-year-old girl who presented with episodes of vomiting, abdominal pain and numbness of limbs. Peripheral blood smear showed few fragmented erythrocytes and 10-12 nucleated red blood cells /100 white blood cells. Reticulocyte count was 15% with presence of Heinz bodies. There was a history of accidental ingestion of lacquer paint thinner...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28042234/diagnosis-and-treatment-of-anemia-in-patients-with-inflammatory-bowel-disease
#12
REVIEW
Victoria Mücke, Marcus M Mücke, Tim Raine, Dominik Bettenworth
Anemia represents one of the most frequent complications in inflammatory bowel disease (IBD) and severely impairs the quality of life of affected patients. The etiology of anemia in IBD patients can be multifactorial, often involving a combination of iron deficiency (ID) and anemia of chronic disease (ACD). Although current guidelines recommend screening for and treatment of anemia in IBD patients, current observational data suggest that it still remains underdiagnosed and undertreated. Besides basic laboratory parameters (e...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28028749/oral-cyclophosphamide-was-effective-for-coombs-negative-autoimmune-hemolytic-anemia-in-cd16-cd56-chronic-lymphoproliferative-disorder-of-nk-cells
#13
Nodoka Sekiguchi, Sayaka Nishina, Toru Kawakami, Hitoshi Sakai, Noriko Senoo, Yasushi Senoo, Toshiro Ito, Hiroshi Saito, Hideyuki Nakazawa, Tomonobu Koizumi, Fumihiro Ishida
An 84-year-old woman was referred to our hospital presenting anemia. Her hemoglobin level was 5.8 g/dL, and white blood cell count was 9400/μL, consisting of 82% lymphocytes. Given the lymphocyte phenotype (CD2+, CD3-, CD16+, and CD56-) and negative whole blood EBV viral load, we made a diagnosis of chronic lymphoproliferative disorder of NK cells (CLPD-NK). We suspected hemolytic anemia because of the high levels of reticulocytes in the peripheral blood and the low haptoglobin value. Although the direct Coombs test was negative and there was no cold agglutination, we examined her red-blood-cell-bound IgG (RBC-IgG), which was elevated...
December 27, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28018448/a-2-month-old-boy-with-hemolytic-anemia-and-reticulocytopenia-following-intravenous-immunoglobulin-therapy-for-kawasaki-disease-a-case-report-and-literature-review
#14
Na Yeon Kim, Joon Hwan Kim, Jin Suk Park, Soo Hyun Kim, Yeon Kyung Cho, Dong Hyun Cha, Ki Eun Kim, Myung Suh Kang, Kyung Ah Lim, Youn Ho Sheen
Herein, we report a rare case of hemolytic anemia with reticulocytopenia following intravenous immunoglobulin therapy in a young infant treated for Kawasaki disease. A 2-month-old boy presented with fever lasting 3 days, conjunctival injection, strawberry tongue, erythematous edema of the hands, and macular rash, symptoms and signs suggestive of incomplete Kawasaki disease. His fever resolved 8 days after treatment with aspirin and high dose infusion of intravenous immunoglobulin. The hemoglobin and hematocrit decreased from 9...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28008293/hormonal-and-echocardiographic-abnormalities-in-adult-patients-with-sickle-cell-anemia-in-bahrain
#15
Taysir S Garadah, Ahmed A Jaradat, Mohammed E Alalawi, Adla B Hassan
BACKGROUND: Adrenal, thyroid, and parathyroid gland hormonal changes are recognized in children with homozygous (HbSS) sickle-cell anemia (SCA), but are not clear in adult patients with SCA. AIM: To assess the metabolic and endocrine abnormalities in adult patients with SCA and evaluate left ventricular (LV) systolic and diastolic functions compared with patients with no SCA and further study the relationship between serum levels of cortisol, free thyroxine (T4), and testosterone with serum ferritin...
2016: Journal of Blood Medicine
https://www.readbyqxmd.com/read/28003770/advances-in-the-management-of-erythropoietic-protoporphyria-role-of-afamelanotide
#16
REVIEW
Ashley M Lane, Jerome T McKay, Herbert L Bonkovsky
Erythropoietic protoporphyria (EPP) and the phenotypically similar disease X-linked protoporphyria (XLPP) are inherited cutaneous porphyrias characterized clinically by acute non-blistering photosensitivity, intolerance to sunlight, and significantly reduced quality of life. They are due to marked overproduction of protoporphyrin (PP) chiefly by erythroblasts and reticulocytes. In EPP, the underlying genetic defect is in the ferrochelatase gene, which encodes the final enzyme in the heme synthetic pathway. In XLPP, the genetic defect is a gain-of-function mutation, usually a four-base deletion, in the gene that encodes the enzyme 5-aminolevulinic acid synthase-2, the first and rate-controlling enzyme of heme synthesis in developing red blood cells...
2016: Application of Clinical Genetics
https://www.readbyqxmd.com/read/28002958/discovery-of-n-bis-4-methoxyphenyl-methyl-4-hydroxy-2-pyridazin-3-yl-pyrimidine-5-carboxamide-mk-8617-an-orally-active-pan-inhibitor-of-hypoxia-inducible-factor-prolyl-hydroxylase-1-3-hif-phd1-3-for-the-treatment-of-anemia
#17
John S Debenham, Christina Madsen-Duggan, Matthew J Clements, Thomas F Walsh, Jeffrey T Kuethe, Mikhail Reibarkh, Scott P Salowe, Lisa M Sonatore, Richard Hajdu, James A Milligan, Denise M Visco, Dan Zhou, Russell B Lingham, Dominique Stickens, Julie A DeMartino, Xinchun Tong, Michael Wolff, Jianmei Pang, Randy R Miller, Edward C Sherer, Jeffrey J Hale
The discovery of novel 4-hydroxy-2-(heterocyclic)pyrimidine-5-carboxamide inhibitors of hypoxia-inducible factor (HIF) prolyl hydroxylases (PHD) is described. These are potent, selective, orally bioavailable across several species, and active in stimulating erythropoiesis. Mouse and rat studies showed hematological changes with elevations of plasma EPO and circulating reticulocytes following single oral dose administration, while 4-week q.d. po administration in rat elevated hemoglobin levels. A major focus of the optimization process was to decrease the long half-life observed in higher species with early compounds...
December 22, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27993641/as2553627-a-novel-jak-inhibitor-prevents-chronic-rejection-in-rat-cardiac-allografts
#18
Koji Nakamura, Masamichi Inami, Hiroki Morio, Kenji Okuma, Misato Ito, Takahisa Noto, Shohei Shirakami, Jun Hirose, Tatsuaki Morokata
Janus family kinases (JAKs) are essential molecules for cytokine responses and attractive targets for the treatment of transplant rejection and autoimmune diseases. Several JAK inhibitors have shown demonstrable effects on acute rejection in experimental cardiac transplant models. However, little is known about the potential benefits of JAK inhibitors on chronic rejection outcomes such as vasculopathy and fibrosis. Here, we examined the pharmacological profile of a novel JAK inhibitor, AS2553627, and explored its therapeutic potential in chronic rejection as well as acute rejection in a rat cardiac transplant model...
December 16, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27981798/frequencies-and-phenotypic-consequences-of-association-of-%C3%AE-and-%C3%AE-thalassemia-alleles-with-sickle-cell-disease-in-bahrain
#19
S Abuamer, D K Shome, A Jaradat, A Radhi, J P Bapat, K A Sharif, J Al-Touq, A Al-Asheeri, A Al-Ajami
INTRODUCTION: Bahrain has high prevalence rates of sickle cell and thalassemia in the population. This study reports the frequencies and phenotypic characteristics of α- and/or β-thalassemia associated with sickle-cell disease (SCD) in a tertiary care hospital. METHODS: Adult SCD patients (n = 200) were screened for the common α- and β-thalassemia alleles prevalent in the region using molecular techniques. Results of CBC, hemoglobin analysis, and average annual frequencies of severe pain episodes and numbers of transfused red cell units were documented...
December 16, 2016: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/27981643/ugt1a1-ta-n-genotype-is-not-the-major-risk-factor-of-cholelithiasis-in-sickle-cell-disease-children
#20
Philippe Joly, Céline Renoux, Philippe Lacan, Yves Bertrand, Giovanna Cannas, Nathalie Garnier, Daniella Cuzzubbo, Kamila Kebaïli, Cécile Renard, Alexandra Gauthier, Vincent Pialoux, Cyril Martin, Marc Romana, Philippe Connes
Because of the increased hemolytic rate, a significant proportion of patients with sickle cell disease (SCD) are prone to develop cholelithiasis. The present study investigated the role of several genetic factors (UGT1A1 promoter (TA)n repeat polymorphism, alpha-globin status), hematological parameters, clinical severity and hydroxyurea (HU) therapy on the occurrence of cholelithiasis in SCD METHODS: One hundred and fifty eight children (2-18 years old) and regularly followed at the university hospital of Lyon (France) were included...
December 16, 2016: European Journal of Haematology
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