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Polycythaemia vera

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https://www.readbyqxmd.com/read/29764825/sudden-hemichorea-and-frontal-lobe-syndrome-a-rare-presentation-of-unbalanced-polycythaemia-vera
#1
Carmen García-Cabo, Jessica Fernandez-Dominguez, Valentín Mateos
Polycythaemia vera (PV) is an haematological neoplasm that frequently presents neurological symptoms. However, chorea is a rare complication of this disease, occurring in less than 5% of the patients. Cognitive impairment related to PV unbalanced is also a rare complication, and it can improve with proper treatment. We present a 96-year-old-man with acute-onset hemichorea and frontal lobe syndrome with no vascular pathology in the basal ganglia or frontal region. A clear relationship was observed between the onset of involuntary movements and the cognitive impairment and worsening of haematological parameters in the patient...
May 14, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29704383/plasma-derived-microparticles-in-polycythaemia-vera
#2
M Ahadon, S Abdul Aziz, C L Wong, C F Leong
INTRODUCTION: Microparticles are membrane bound vesicles, measuring less than 1.0 um, which are released during cellular activation or during apoptosis. Studies have shown that these circulating microparticles play a role in coagulation, cell signaling and cellular interactions. Increased levels of circulating microparticles have been observed in a number of conditions where there is vascular dysfunction, thrombosis and inflammation. The objective of this study was to determine the various plasma-derived microparticles in patients with polycythaemia vera (PV) in Universiti Kebangsaan Malaysia Medical Centre and to compare them with normal control...
April 2018: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/29520559/life-for-patients-with-myelofibrosis-the-physical-emotional-and-financial-impact-collected-using-narrative-medicine-results-from-the-italian-back-to-life-project
#3
Francesca Palandri, Giulia Benevolo, Alessandra Iurlo, Elisabetta Abruzzese, Angelo M Carella, Chiara Paoli, Giuseppe A Palumbo, Massimiliano Bonifacio, Daniela Cilloni, Alessandro Andriani, Attilio Guarini, Diamante Turri, Elena Maria Elli, Antonietta Falcone, Barbara Anaclerico, Pellegrino Musto, Nicola Di Renzo, Mario Tiribelli, Renato Zambello, Caterina Spinosa, Alessandra Ricco, Letizia Raucci, Bruno Martino, Mario Annunziata, Silvia Pascale, Anna Marina Liberati, Giorgio La Nasa, Margherita Maffioli, Massimo Breccia, Novella Pugliese, Silvia Betti, Gianfranco Giglio, Antonietta Cappuccio, Luigi Reale
PURPOSE: Myelofibrosis (MF) is a chronic myeloproliferative neoplasm characterised by an aggressive clinical course, with disabling symptoms and reduced survival. Patients experience a severely impaired quality of life and their families face the upheaval of daily routines and high disease-related financial costs. The aim of this study was to investigate the perceptions of Italian patients and their caregivers about living with MF and the burden of illness associated with MF. METHODS: A quali-quantitative questionnaire and a prompted written narrative survey were administered to patients affected by primary or post-essential thrombocythemia/post-polycythaemia vera MF and their primary caregiver in 35 Italian haematological centres...
June 2018: Quality of Life Research
https://www.readbyqxmd.com/read/29285836/disease-and-treatment-characteristics-of-polycythemia-vera-patients-in-belgium-results-from-a-scientific-survey
#4
Timothy Devos, Yves Beguin, Lucien Noens, Koen Van Eygen, Pierre Zachée, Philippe Mineur, Laurent Knoops, Chantal Doyen, Koen Theunissen, Fleur Samantha Benghiat, Michael Reusens, Wim Pluymers
OBJECTIVE: The current survey aimed to gather predefined disease parameters and treatment strategies to characterize the polycythemia vera (PV) patient population in Belgium. METHODS: Cross-sectional data from PV patients, seen at least once between May 2014 and May 2015 at 10 sites in Belgium, were collected in aggregated form and analyzed descriptively and quantitatively. RESULTS: Data from 343 PV patients were collected. Of these, 174 (50...
April 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29246923/non-adherence-to-treatment-with-cytoreductive-and-or-antithrombotic-drugs-is-frequent-and-associated-with-an-increased-risk-of-complications-in-patients-with-polycythemia-vera-or-essential-thrombocythemia-ouest-study
#5
Ronan Le Calloch, Karine Lacut, Christelle Le Gall-Ianotto, Emmanuel Nowak, Morgane Abiven, Adrian Tempescul, Florence Dalbies, Jean-Richard Eveillard, Valérie Ugo, Stéphane Giraudier, Gaëlle Guillerm, Eric Lippert, Christian Berthou, Jean-Christophe Ianotto
The purpose of this study was to identify the incidence, causes and impact of non-adherence to oral and subcutaneous chronic treatments for patients with polycythemia vera or essential thrombocythemia. Patients receiving cytoreductive drugs for polycythemia vera or essential thrombocythemia were recruited at our institution ( Observatoire Brestois des Néoplasies Myéloprolifératives registry). They completed a one-shot questionnaire designed by investigators ( Etude de l'Observance Thérapeutique et des Effets Secondaires des Traitements study)...
April 2018: Haematologica
https://www.readbyqxmd.com/read/29134817/the-bcr-abl1-negative-myeloproliferative-neoplasms-a-review-of-jak-inhibitors-in-the-therapeutic-armamentarium
#6
REVIEW
Martin Griesshammer, Parvis Sadjadian
The classical BCR-ABL1-negative myeloproliferative neoplasms (MPN) include primary myelofibrosis (PMF), polycythemia vera (PV) and essential thrombocythemia (ET). They are characterized by stem cell-derived clonal proliferation, harbor Janus kinase 2 (JAK2), or calreticulin (CALR), or myeloproliferative leukemia virus oncogene (MPL) driver mutations and exert an over activated JAK-signal transducer and activator of transcription (STAT) pathway. Therefore JAK inhibiting strategies have been successfully investigated in MPN clinical trials...
December 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/29076129/the-mosaicc-study-assessing-feasibility-for-biological-sample-collection-in-epidemiology-studies-and-comparison-of-dna-yields-from-saliva-and-whole-blood-samples
#7
Glen James, Mary Frances McMullin, Andrew S Duncombe, Mike Clarke, Lesley A Anderson
Biological sample collection is becoming more common in epidemiology research to obtain DNA for genetic analysis. There are many different DNA collection methods but little evidence on their relative effectiveness. Therefore, we took the opportunity of a prospective case-control study in myeloproliferative neoplasms (MPNs) to compare DNA yield from 8.5 mL PAXgene tubes for whole blood collection versus 2 mL Oragene OG-500 saliva collection kits. MPNs include polycythaemia vera, essential thrombocythaemia, and primary myelofibrosis...
March 2018: Annals of Human Genetics
https://www.readbyqxmd.com/read/29021147/atypical-haematological-presentation-in-a-case-of-polycythaemia-vera-with-a-new-variant-mutation-detected-in-exon-12-c-1605g-t-p-met535ile
#8
Amélia Soraia Andrade Pita, Ana Paula da Silva Azevedo, Alice Reichert, Cândido José Pimenta da Silva, Vanessa Henriques, Diana Sousa Mendes, Ana Maria Batalha Reis, Rita Cerqueira, Fátima Torres, João Faro Viana
One of the major genetic insights into the pathogenesis of polycythaemia vera included the identification of the somatic point gain-of-function mutations in Janus kinase 2 gene-first JAK2V617F on exon 14, present in 95%-97% of the cases, and later on exon 12. In the literature, we can find some reported studies where different exon 12 mutations are identified. Unlike patients with JAK2V617F mutation in exon 14, the mutation at exon 12 is not usually associated with an increase in the three haematopoietic series (erythrocytosis, leucocytosis and thrombocytosis)...
February 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28971208/burden-of-aquagenic-pruritus-in-polycythaemia-vera
#9
Edyta Lelonek, Łukasz Matusiak, Tomasz Wróbel, Jacek Kwiatkowski, Jacek C Szepietowski
Aquagenic pruritus (AP) has a significant influence on quality of life (QoL) in patients with polycythaemia vera. This study analysed the impact of AP on patient well-being in 102 patients with polycythaemia vera. Intensity of pruritus was evaluated using a visual analogue scale (VAS), verbal rating scale (VRS) and a 4-item Itch Questionnaire. Psychosocial aspects of AP were assessed with the Hospital Anxiety and Depression Scale (HADS), EQ-5D and itch-specific QoL questionnaire (ItchyQoL). AP of mean duration 6...
February 7, 2018: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28806110/-anteposition-in-malignant-hematologic-diseases-of-siblings-in-szabolcs-szatm%C3%A3-r-bereg-county-hungary-analysis-of-data-of-a-34-year-period
#10
János Jakó, László Szerafin
INTRODUCTION: In their previous works, the authors reported findings from familial hematologic malignancies in Szabolcs-Szatmár-Bereg county, Hungary. So far there are no other studies on this topic available in Hungary. AIM: Detailed analysis of epidemiologic features of hematologic malignancies of siblings. METHOD: During a 34-year period (between January 1, 1983 and December 31, 2016), 86 families with hematologic malignancies were recorded in Szabolcs-Szatmár-Bereg county...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28798246/extramedullary-haematopoiesis-presenting-with-cardiac-tamponade-in-a-patient-with-polycythaemia-vera
#11
Faysal Haroun, Viktoria Elkis, Anne Chen, Elsie Lee
A 71-year-old man with a history of polycythaemia vera, diagnosed 4 years ago, presented to the emergency room with shortness of breath. A bedside echocardiogram revealed a large pericardial effusion with features concerning for pericardial tamponade. A left anterior thoracotomy and a pericardial window were emergently performed in the operating room and relieved the patient's symptoms. Histology evaluation of the pericardial fragments and pericardial fluid revealed the presence of trilineage haematopoietic elements without any increase in the blasts...
August 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28732065/direct-targets-of-pstat5-signalling-in-erythropoiesis
#12
Kevin R Gillinder, Hugh Tuckey, Charles C Bell, Graham W Magor, Stephen Huang, Melissa D Ilsley, Andrew C Perkins
Erythropoietin (EPO) acts through the dimeric erythropoietin receptor to stimulate proliferation, survival, differentiation and enucleation of erythroid progenitor cells. We undertook two complimentary approaches to find EPO-dependent pSTAT5 target genes in murine erythroid cells: RNA-seq of newly transcribed (4sU-labelled) RNA, and ChIP-seq for pSTAT5 30 minutes after EPO stimulation. We found 302 pSTAT5-occupied sites: ~15% of these reside in promoters while the rest reside within intronic enhancers or intergenic regions, some >100kb from the nearest TSS...
2017: PloS One
https://www.readbyqxmd.com/read/28710306/ruxolitinib-treatment-in-an-infant-with-jak2-polycythaemia-vera-associated-budd-chiari-syndrome
#13
Mehmet Enes Coskun, Sue Height, Anil Dhawan, Nedim Hadzic
Budd-Chiari syndrome (BCS) is caused by hepatic venous outflow obstruction commonly seen with myeloproliferative neoplasms (MPNs). Polycythaemia vera (PV) is a very rare MPN in childhood. This is the youngest reported patient diagnosed with PV and BCS secondary to JAK V617F mutation.A 26-month-old girl was admitted with a 5-month history of abdominal distension, hepatosplenomegaly and ascites. Imaging studies revealed occlusion of the right hepatic vein and marked attenuation of the middle and left hepatic veins...
July 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28659202/-polycythaemia-in-a-patient-with-uterus-myomatosus
#14
J P de Boer, G Velders, R Aliredjo, E Scheenjes, T W H Flinsenberg
BACKGROUND: Myomatous erythrocytosis syndrome (MES) is characterised by a combination of polycythaemia, uterus myomatosus and the normalisation of erythrocyte count after hysterectomy. CASE DESCRIPTION: A 58-year-old postmenopausal woman was referred to the gynaecologist with symptoms of vaginal blood loss, increased abdominal circumference and pollakiuria. Physical examination indicated her uterus was enlarged to the size of a 24-week gestation. Endometrial malignancy was excluded and ultrasound showed a myoma...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28615140/imaging-features-of-myeloproliferative-neoplasms
#15
REVIEW
I G Murphy, E L Mitchell, L Raso-Barnett, A L Godfrey, E M Godfrey
Myeloproliferative neoplasms (MPNs) are a heterogeneous group of haematological disorders including polycythaemia vera (PV), essential thrombocythaemia (ET), primary myelofibrosis (PMF), and chronic myeloid leukaemia (CML). These disorders show large overlap in genetic and clinical presentations, and can have many different imaging manifestations. Unusual thromboses, embolic events throughout the systemic or pulmonary vasculature, or osseous findings can often be clues to the underlying disease. There is limited literature about the imaging features of these disorders, and this may result in under-diagnosis...
October 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28614617/urticaria-pigmentosa-with-concomitant-polycythaemia-vera-in-a-3-year-old-boy
#16
B E K Guevara, V P Guillano, J F Dayrit
No abstract text is available yet for this article.
August 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28602585/janus-kinase-2-inhibitor-fedratinib-in-patients-with-myelofibrosis-previously-treated-with-ruxolitinib-jakarta-2-a-single-arm-open-label-non-randomised-phase-2-multicentre-study
#17
MULTICENTER STUDY
Claire N Harrison, Nicolaas Schaap, Alessandro M Vannucchi, Jean-Jacques Kiladjian, Ramon V Tiu, Pierre Zachee, Eric Jourdan, Elliott Winton, Richard T Silver, Harry C Schouten, Francesco Passamonti, Sonja Zweegman, Moshe Talpaz, Joanne Lager, Zhenming Shun, Ruben A Mesa
BACKGROUND: Myelofibrosis is a chronic myeloproliferative neoplasm characterised by splenomegaly, cytopenias, bone marrow fibrosis, and debilitating symptoms including fatigue, weight loss, and bone pain. Mutations in Janus kinase-2 (JAK2) occur in approximately 50% of patients. The only approved JAK2 inhibitor for myelofibrosis is the dual JAK1 and JAK2 inhibitor, ruxolitinib. 58-71% of patients treated with ruxolitinib in clinical trials so far have not achieved the primary endpoint of 35% or more reduction in spleen volume from baseline assessed by MRI or CT...
July 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28550306/a-novel-somatic-transforming-mutation-in-the-extracellular-domain-of-epidermal-growth-factor-receptor-identified-in-myeloproliferative-neoplasm
#18
D A Casolari, T Nguyen, C M Butcher, D G Iarossi, C N Hahn, S C Bray, P Neufing, W T Parker, J Feng, K Z Y Maung, A Wee, L Vidovic, C H Kok, P G Bardy, S Branford, I D Lewis, S W Lane, H S Scott, D M Ross, R J D'Andrea
We describe a novel ERBB1/EGFR somatic mutation (p. C329R; c.985 T > C) identified in a patient with JAK2(V617F) Polycythaemia Vera (PV). This substitution affects a conserved cysteine residue in EGFR domain 2 and leads to the formation of a ligand-independent covalent receptor dimer, associated with increased transforming potential. Aberrant signalling from the EGFR(C329R) receptor is cell type-dependent and in the TF1.8 erythroid cell line expression of this mutant suppresses EPO-induced differentiation...
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28542718/impact-of-genotype-on-leukaemic-transformation-in-polycythaemia-vera-and-essential-thrombocythaemia
#19
MULTICENTER STUDY
Alberto Alvarez-Larrán, Alicia Senín, Concepción Fernández-Rodríguez, Arturo Pereira, Eduardo Arellano-Rodrigo, Montse Gómez, Francisca Ferrer-Marin, Joaquín Martínez-López, Laura Camacho, Dolors Colomer, Anna Angona, Blanca Navarro, Francisco Cervantes, Carlos Besses, Beatriz Bellosillo, Juan Carlos Hernández-Boluda
The influence of driver mutations on leukaemic transformation was analysed in 1747 patients with polycythaemia vera or essential thrombocythaemia. With a median follow-up of 7·2 years, 349 patients died and 62 progressed to acute leukaemia or myelodysplastic syndrome. Taking death as a competing risk, CALR genotype was associated with a lower risk of transformation [subdistribution hazard ratio (SHR): 0·13, 95% confidence interval (CI): 0·2-0·9, P = 0·039], whereas JAK2 V617F showed borderline significance for higher risk (SHR: 2·05, 95% CI: 0·9-4·6, P = 0·09)...
September 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28504778/chorea-in-the-older-adult-a-full-blooded-answer
#20
A J Degnan, E Capek, A Bowman
Chorea is a severe, distressing, movement disorder characterised by excessive, purposeless movements of the limbs, head and orofacial muscles in a generalised and irregularly-timed fashion. In young patients, neurodegenerative (Huntington's disease) and metabolic (Wilson's disease) aetiologies are most common. In the older population, the differential widens to include genetic, structural, metabolic and pharmacological causes. We present a case of an older man who developed progressive choreoathetosis secondary to polycythaemia vera which resolved with serial venesections...
December 2016: Journal of the Royal College of Physicians of Edinburgh
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