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Hydroxyurea

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https://www.readbyqxmd.com/read/29769012/synthesis-in-silico-and-in-vitro-cytostatic-activity-of-new-lipophilic-derivatives-of-hydroxyurea
#1
Zeynab Khansepid, Asghar Davood, Maryam Iman, Mahdi Fasihi Ramandi
BACKGROUND: Hydroxyurea (HU) is used to treat cancer., HU has a short half-life due to its small molecular weight and high polarity, therefore a high dosage of the drug should be used which introduces side effects and more rapid development of resistance. OBJECTIVE: The objective of the current study is to design a new lipophilic analogues of hydroxyurea with higher stability and better cell penetration. Then Tthe designed compoundsdrug wereas synthesized and then evaluated in terms of theirthe cytostatic activiactivitiesty was evaluated against two human cell linesthe Panc and Hella cell lines...
May 16, 2018: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/29767446/hydroxycarbamide-adherence-and-cumulative-dose-associated-with-hospital-readmission-in-sickle-cell-disease-a-6-year-population-based-cohort-study
#2
Jifang Zhou, Jin Han, Edith A Nutescu, Victor R Gordeuk, Santosh L Saraf, Gregory S Calip
Sickle cell disease (SCD) is a congenital haemoglobinopathy that causes frequent acute care/emergency room visits and hospital admissions for affected individuals. Evidence from population-based studies demonstrating the role of hydroxycarbamide (HC, also termed hydroxyurea) in reducing hospital readmission rates is limited. Our objective was to describe the use of HC and its association with acute care utilization and readmission rates using a large, nationally-representative US health insurance claims database over a 6-year period between 2009 and 2014...
May 16, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29762306/prevalence-and-incidence-of-congenital-anomalies-amongst-babies-born-to-women-with-sickle-cell-disease-and-exposed-to-hydroxyurea-during-pregnancy-a-systematic-review-protocol
#3
Stephen Otieno Gwer, Kennedy Odoyo Onyango
What is the prevalence and incidence of congenital anomalies among babies born to women with sickle cell disease (SCD) and who have been exposed to hydroxyurea (HU) therapy at any time in their pregnancy?The objective of this review is to identify the proportion of babies born with congenital anomalies among babies born to mothers with SCD who have been exposed to HU therapy at any point during pregnancy and to describe the specific types of congenital anomalies encountered.
May 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29732592/transcranial-doppler-ultrasound-in-peninsular-arab-patients-with-sickle-cell-disease
#4
Adekunle Adekile, Meaad Hassan, Akram Asbeutah, Mohamed Al-Hinai, Omar Trad, Nayef Farhan
OBJECTIVES: Transcranial Doppler ultrasound is used to identify patients with sickle cell disease (SCD) at risk for stroke. We performed transcranial Doppler studies in patients from 4 countries in the Arabian Peninsula (Kuwait, Oman, Iraq, and United Arab Emirates) to document the prevalence of abnormal transcranial Doppler findings. METHODS: The patients were recruited from outpatient clinics and studied in a steady state. Transcranial Doppler examinations were performed with standard equipment by experienced operators...
May 6, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29728697/hematopoietic-stem-cell-transplantation-for-adult-sickle-cell-disease-in-the-era-of-universal-donor-availibility
#5
Hafiz Muhammad Aslam, Said Yousuf, Adetola Kassim, Shumaila Muhammad Iqbal, Shahrukh K Hashmi
Current projections estimate that the number of newborns with sickle cell disease (SCD) globally will exceed 400,000 by 2050. Over the last three decades, increased newborn screening, supportive care, and use of hydroxyurea therapy, have decreased early childhood mortality among individuals affected with SCD. Despite hematopoietic cell transplantation (HCT) being curative in SCD, its impact on disease free survival remains unknown, especially in adults, partly due to previous limitations in donor options and perceived mortality in adults using myeloablative conditioning...
May 4, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29717365/the-who-diagnostic-criteria-for-polycythemia-vera-role-of-red-cell-mass-versus-hemoglobin-hematocrit-level-and-morphology
#6
Ljubomir Jakovic, Mirjana Gotic, Heinz Gisslinger, Ivan Soldatovic, Dijana Sefer, Mila Tirnanic, Danijela Lekovic, Maja Perunicic Jovanovic, Martin Schalling, Bettina Gisslinger, Christine Beham-Schmid, Ingrid Simonitsch-Klupp, Jürgen Thiele
Regarding diagnosis of polycythemia vera (PV), discussion persists about hemoglobin (Hb) and/or hematocrit (Hct) threshold values as surrogate markers for red cell mass (RCM) and the diagnostic impact of bone marrow (BM) morphology. We performed a retrospective study on 290 patients with PV (151 males, 139 females; median age 65 years) presenting with characteristic BM features (initial biopsies, centralized evaluation) and endogenous erythroid colony (EEC) formations. This cohort included (1) a group of 229 patients when following the 2008 versus 256 patients diagnosed according to the 2016 World Health Organization (WHO) guidelines, all presented with increased RCM; (2) masked PV patients with low Hb (n = 143)/Hct (n = 45) recruited from the 2008 WHO cohort; (3) a cohort of 17 PV patients with elevated diagnostic Hb/Hct levels but low RCM; and (4) nine PV patients with increased RCM, opposing low Hb/Hct values...
May 1, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29714651/hypereosinophilic-syndrome-preceding-a-diagnosis-of-b-cell-lymphoma
#7
Arash Samarghandi, Shradha Ahuja, Vishal Jindal, Sorab Gupta, Ilmana Fulger
INTRODUCTION: Hypereosinophilic syndrome (HES) is a rare condition characterized by eosinophilia and organ destruction secondary to eosinophilic infiltration. The coexistence of primary B-cell lymphoma and hypereosinophilic syndrome is extremely rare. We present a case of HES that preceded the diagnosis of diffuse large B-cell lymphoma. CASE REPORT: A 70-year-old man presented with a 3-month history of diarrhea and 30-pound weight loss. Complete blood count showed a white blood cell count of 7452/µL with eosinophils of 42% (absolute eosinophil count 3130)...
March 1, 2018: Tumori
https://www.readbyqxmd.com/read/29706184/definitive-chemoradiation-for-locally-advanced-oral-cavity-cancer-a-20-year-experience
#8
Corey C Foster, James M Melotek, Ryan J Brisson, Tanguy Y Seiwert, Ezra E W Cohen, Kerstin M Stenson, Elizabeth A Blair, Louis Portugal, Zhen Gooi, Nishant Agrawal, Everett E Vokes, Daniel J Haraf
OBJECTIVES: Definitive chemoradiation (CRT) for oral cavity squamous cell carcinoma (OC-SCC) is often criticized for poor efficacy or toxicity. We describe a favorable 20-year experience of primary CRT for locally-advanced OC-SCC. MATERIALS AND METHODS: Patients with locally-advanced, stage III/IV OC-SCC receiving primary concomitant CRT on protocols from 1994 to 2014 were analyzed. Chemotherapy included fluorouracil and hydroxyurea with other third agents. Radiotherapy (RT) was delivered once or twice daily to a maximum dose of 70-75 Gy...
May 2018: Oral Oncology
https://www.readbyqxmd.com/read/29705357/low-doses-of-dna-damaging-agents-extend-saccharomyces-cerevisiae-chronological-lifespan-by-promoting-entry-into-quiescence
#9
Emily M Ross, Patrick H Maxwell
A variety of mild stresses have been shown to extend lifespan in diverse species through hormesis, which is a beneficial response to a stress or toxin that would cause a negative response at a higher exposure. Whether particular stresses induce hormesis can vary with genotype for a given species, and the underlying mechanisms of lifespan extension are only partly understood in most cases. We show that low doses of the DNA damaging or replication stress agents hydroxyurea, methyl methanesulfonate, 4-nitroquinoline 1-oxide, or Zeocin (a phleomycin derivative) lengthened chronological lifespan in Saccharomyces cerevisiae if cells were exposed during growth, but not if they were exposed during stationary phase...
April 26, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29693797/mobile-health-intervention-for-youth-with-sickle-cell-disease-impact-on-adherence-disease-knowledge-and-quality-of-life
#10
Lindsay M Anderson, Sarah Leonard, Jude Jonassaint, Joseph Lunyera, Melanie Bonner, Nirmish Shah
BACKGROUND: Adherence to illness self-management among youth with sickle cell disease (SCD) positively impacts health outcomes and decreases overall healthcare costs. Despite this, children with SCD face several barriers to adherence, with adherence rates that remain moderate to low. The current feasibility study examined the Intensive Training Program (ITP), a mobile health (mHealth) intervention for youth with SCD designed to promote disease knowledge, adherence, and patient-provider communication...
April 25, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29691095/role-of-hydroxyurea-as-an-adjuvant-treatment-after-gamma-knife-radiosurgery-for-atypical-who-grade-ii-meningiomas
#11
Khalid Abdel Karim, Amr El Shehaby, Reem Emad, Wael Reda, Manal El Mahdy, Ramy Ghali, Ahmed Nabeel
No abstract text is available yet for this article.
April 21, 2018: Journal of the Egyptian National Cancer Institute
https://www.readbyqxmd.com/read/29683954/a-retrospective-analysis-of-sociodemographic-and-hematologic-characteristics-associated-with-achieving-optimal-hydroxyurea-therapy-in-children-with-sickle-cell-disease
#12
Paul E George, Juan C Bazo-Alvarez, Vivien A Sheehan
Hydroxyurea (HU) has proven hematologic and clinical benefits, especially when escalated to the maximum tolerated dose (MTD). We reviewed clinical data from patients with sickle cell disease (January 2011 to 2016) to determine baseline sociodemographic and laboratory parameters associated with reaching HU MTD without significant delays. In total, 210 patients (mean HU start age, 6.6 y) were included. Initial Kaplan-Meier event analysis showed 1 year to be an inflection point for reaching MTD. In total, 116 patients (55%) reached MTD in <1 year, with 56 (27%) taking >1 year to reach MTD and 38 (18%) patients not successfully reaching MTD during follow-up...
April 20, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29682347/prevalence-of-microalbuminuria-in-adult-patients-with-sickle-cell-disease-in-eastern-saudi-arabia
#13
Ahmed M Alkhunaizi, Adil A Al-Khatti, Mansour A Alkhunaizi
Background: Proteinuria is a common feature of sickle cell nephropathy (SCN) that can progress to renal insufficiency and end stage renal disease. Microalbuminuria (MA) is the earliest manifestation of SCN and precedes the development of overt proteinuria. In addition to the renal consequences, MA is linked to cardiovascular complications. Periodic screening and early detection of MA allow early intervention that may reduce the risk of progression to advanced renal failure and cardiovascular diseases...
2018: International Journal of Nephrology
https://www.readbyqxmd.com/read/29679812/protective-role-of-nimbolide-against-chemotherapeutic-drug-hydroxyurea-induced-genetic-and-oxidative-damage-in-an-animal-model
#14
Md Fahim Ahmad, Mohd Owais Ansari, Sana Jameel, Ab Latif Wani, Nuzhat Parveen, Hifzur R Siddique, G G H A Shadab
Nimbolide is known to be an antioxidant found in neem plant. Hydroxyurea is a medication frequently used in sickle-cell disease, different cancers and HIV infection. The present study aimed to evaluate the adverse effect of HU and possible amelioration by nimbolide in Wistar rats. To test our hypothesis, we performed genotoxicity tests, biochemical assays, and histopathological studies. We observed that HU caused higher levels of genotoxicity in the treated animals. The observed genetic and oxidative damage might be due to the presence of reactive species as HU increased the level of the malondialdehyde-a biomarker of oxidative damage...
April 12, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29668582/bilateral-visual-loss-and-cerebral-infarction-after-spleen-embolization-in-a-trauma-patient-with-idiopathic-thrombocytopenic-purpura-a-case-report
#15
Wei-Ting Wang, Yu-Yu Li, Wan-Ching Lin, Jen-Yin Chen, Kuo-Mao Lan, Cheuk-Kwan Sun, Kuo-Chuan Hung
RATIONALE: Splenic artery embolization (SAE) is a common procedure in trauma patients with blunt splenic injuries. We report a case of acute ischemic stroke following orthopedic surgery in a patient with post-SAE reactive thrombocytosis. PATIENT CONCERNS: A 37-year-old woman with idiopathic thrombocytopenic purpura (ITP) suffered from multiple trauma scheduled for open reduction and internal fixation for right tibial and left radius fracture five days after SAE...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29650801/the-role-of-jak2-inhibitors-in-mpn-seven-years-after-approval
#16
Francesco Passamonti, Margherita Maffioli
Myeloproliferative neoplasms (MPNs) include essential thrombocythemia, polycythemia vera (PV) and primary myelofibrosis (PMF). Phenotype-driver mutations of JAK2, CALR and MPL genes are present in MPNs and can be variably combined with additional mutations. Driver mutations entail a constitutive activation of the JAK2/STAT pathway, the key signaling cascade in MPNs. Among JAK2 inhibitors (JAKis), ruxolitinib (RUX) has been approved for the treatment of intermediate and high risk myelofibrosis (MF) and of PV inadequately controlled by or intolerant of hydroxyurea...
April 12, 2018: Blood
https://www.readbyqxmd.com/read/29627078/the-roles-of-jak2-in-dna-damage-and-repair-in-the-myeloproliferative-neoplasms-opportunities-for-targeted-therapy
#17
REVIEW
Theodoros Karantanos, Alison R Moliterno
The JAK2V617F-positive myeloproliferative neoplasms (MPN) serve as an excellent model for the study of genomic instability accumulation during cancer progression. Recent studies highlight the implication of JAK2 activating mutations in the development of DNA damage via reactive oxygen species (ROS) production, replication stress induction and the accumulation of genomic instability via the increased degradation of p53 and acquisition of a "mutagenic" phenotype. The accumulation of genomic instability and acquisition of mutations in critical DNA damage repair (DDR) mediators appears to be implicated in the progression of JAK2V617F-positive MPN...
March 30, 2018: Blood Reviews
https://www.readbyqxmd.com/read/29622872/beneficial-effect-of-low-fixed-dose-of-hydroxyurea-in-vaso-occlusive-crisis-and-transfusion-requirements-in-adult-hbss-patients-a-prospective-study-in-a-tertiary-care-center
#18
Sudha Sethy, Tribikram Panda, Rabindra Kumar Jena
Significant reduction in morbidity and mortality have been documented in patients with sickle cell disease (HbSS) by most of the studies using hydroxyurea at a dose of 25-35 mg/kg/day or maximum tolerated dose. But toxicities, need for frequent monitoring, compliance and cost are important hurdles particularly in Indian set up. We undertook this study to find out the efficacy, safety compliance rate of low fixed dose of hydroxyurea (10 mg/kg/day) in patients presenting to our hospital and its impact on clinical profile and laboratory parameters...
April 2018: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29620547/vitamin-d-deficiency-in-sickle-cell-disease-patients-in-the-eastern-province-of-saudi-arabia
#19
Ali AlJama, Mohammed AlKhalifah, Ibrahim Abdulla Al-Dabbous, Ghada Alqudaihi
BACKGROUND: Vitamin D deficiency (VDD) is a major global health problem. In sickle cell disease (SCD), VDD is highly prevalent, reaching up to 96% of populations. VDD may contribute to many of the complications of SCD. OBJECTIVE: Estimate the 25-hydroxyvitamin D [25(OH)D] level and the frequency of VDD and insufficiency among among SCD patients by age group and disease status. DESIGN: Analytical cross-sectional. SETTING: Ministry of Health (MOH) secondary care hospital...
March 2018: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/29619129/sickle-cell-anemia-patients-in-use-of-hydroxyurea-association-between-polymorphisms-in-genes-encoding-metabolizing-drug-enzymes-and-laboratory-parameters
#20
Sètondji Cocou Modeste Alexandre Yahouédéhou, Magda Oliveira Seixas Carvalho, Rodrigo Mota Oliveira, Rayra Pereira Santiago, Caroline Conceição da Guarda, Suellen Pinheiro Carvalho, Júnia Raquel Dutra Ferreira, Milena Magalhães Aleluia, Elisângela Vitória Adorno, Marilda de Souza Gonçalves
This study investigated associations between SNPs in genes encoding metabolizing drug enzymes and laboratory parameters in sickle cell anemia patients under hydroxyurea (SCA-HU+ ). We evaluated hematologic and biochemical parameters by electronic methods and SNPs by PCR-RFLP and multiplex PCR in 35 SCA-HU+ patients and 67 SCA-HU- patients. The HbS, total cholesterol, lactate dehydrogenase, aspartate aminotransferase, total bilirubin and fractions levels, and leukocyte, eosinophil, monocyte, and erythroblast counts were reduced in SCA-HU+ patients ( p < 0...
2018: Disease Markers
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