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Qatar Foundation Annual Research Forum Volume 2012 Issue 1
- Conference date: 21-23 Oct 2012
- Location: Qatar National Convention Center (QNCC), Doha, Qatar
- Volume number: 2012
- Published: 01 October 2012
181 - 200 of 469 results
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Protein PEGylation and gene DNA shuffling for the production of new protein therapeutics
More LessBackground: Hepatitis C has emerged in recent years as a common cause of liver disease. An estimated 200 million people are thought to be infected worldwide. Hepatitis C virus (HCV) infection is characterized by viral persistence and chronic liver disease in approximately 80% of cases. Chronic HCV infection is curable by either a combination of interferon and ribavirin, or PEGylated interferon. Both drugs had been shown Read More
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Posaconazole a prophylactic therapy in hematological cancer patients: Drug use evaluation study
Authors: Dalia Hamdy, Hager El-Geed, Samah El-Salem and Manal ZaidanBackground and Objectives: Posaconazole (PSZ), is an antifungal prophylactic therapy that is used in hematologic cancer patients. It is approved for prophylaxis in hematologic cancer patients ≥13 years in USA, Canada, Australia, and ≥18 years in the European Union. In 2010, PSZ was added to the formulary of Al-Amal Hospital, the only adult cancer hospital in Qatar. The objective of this study is to conduct a drug use evaluation Read More
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Photo-cross-linked poly(alkylene-co-tartrate) biodegradable matrices for implantable controlled drug delivery and other biomedical applications
Authors: Ahmad Abuhelwa, Mohammed Shaker and Husam M YounesObjectives: To investigate the synthesis and in vitro characterization of a novel family of photo-cross-linked biodegradable poly(alkylene-co-tartrate) (PAT) for the purpose of their use in implantable drug delivery and tissue engineering applications. Methods: PAT prepolymers were first synthesized via polycondensation reaction of L-tartaric acid with alkylene diols of varying chain lengths (C6-C12) at 130°C for two hours under nitrog Read More
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PEGylated interferon alfa-2a induces complete hematologic and molecular responses with low toxicity in essential thrombocythemia
More LessBackground: Essential thrombocythemia (ET) is a myeloproliferative neoplasm (MPN) marked by a risk of thrombotic and hemorrhagic complications, and by a long-term risk of evolution to myelofibrosis (MF), and acute leukemia (AL). Methods: Inclusion criteria: ET diagnosed as per WHO classification 2008, age 18 to 45 year. Exclusion criteria: (hepatic and renal dysfunction, history of psychiatric disorder, in particula Read More
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Pediatric pneumococcal immunization programs and associated changes in antibiotic utilization: A systematic review
Authors: Kyle John Wilby and Denise WerryBackground and Objectives: Antimicrobial stewardship is rapidly becoming very popular throughout the Middle East and abroad. Immunization programs, as a form of disease prevention, may reduce utilization of antimicrobials by decreasing incidence of disease requiring treatment. This may be especially important in children, as exposure to antimicrobials has been associated with chronic diseases such as asthma. The o Read More
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Optimal reference selection for genome assembly using the minimum description length principle
Authors: Bilal Wajid, Erchin Serpedin, Marwa Qaraqe, Hazem Nounou, Mohamed Nounou, Lotfi Chouchane and Nady MohamedBackground and Objectives: Reference assisted assembly requires the use of a reference sequence, as a model, to assist in the assembly of novel genomes. The standard method for identifying the best reference sequence for the assembly of a novel genome aims at counting the number of reads of the novel genome that align to the reference sequences and then choosing the reference sequence which has the highest num Read More
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Obstetric determinants of neonatal mortality in the State of Qatar: A PEARL study analysis
Background and Objectives: The State of Qatar has achieved maternal, neonatal and perinatal survival rates which are comparable to many high income countries, both from the West and East. Our study aims to analyze obstetric determinants of Qatar's neonatal mortality rate (NMR) during 2011. Methodology: A PEARL study (Perinatal Neonatal Outcomes Research Study in the Arabian Gulf), a joint collaborative research proj Read More
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Novel oral formulations of metformin in semi-solid matrices: Design, characterization and in vitro dissolution testing
Authors: Sandi Ali-Adib, Ahmad Abuhelwa and Husam M YounesObjectives: To formulate and evaluate oral dosage forms of metformin hydrochloride (MH) having sustained-release properties that would also increase MH bioavailability and address the shortcomings in the currently marketed sustained-release tablets. Methods: MH micronized powder was dispersed in molten polymeric matrices composed of Gelucire® 50/13 and various proportions of high molecular weight hydrophilic poly Read More
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New frontiers for human risk assessment following exposure to chemical/environmental mutagens: State of the art testing for detecting causes of cancer
Authors: Firouz Darroudi and Michael LongBackground: Large numbers of chemicals (natural and synthetic, including human dietary food components) are tested each year worldwide for potential genotoxic properties to protect humans and the environment against the consequences of exposure to such chemicals (cancer, infertility, accelerated ageing, and instability of ecosystems). For primary screening, fast in vitro and in vivo tests are used, but their predictive val Read More
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Molecular genetic approach to the diagnosis of a clinically equivocal retinopathy
Background and Objectives: A pregnant female requested prenatal diagnosis for a congenital and complex eye disease segregating in her family. The three-generation pedigree of Romanian ethnic origin was suggestive of an X-linked inheritance, due to exclusively affected males and no father-to-son transmission. Affected individuals had bilateral optic nerve atrophy, microphthalmia, nystagmus, leukocoria, cataract, retin Read More
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Lack of evidence of substantial hepatitis C virus (HCV) prevalence decline in Egypt in the last 20 years
Authors: Yousra Ali Mohamoud and Laith J. Abu-RaddadBackground: Egypt has the highest hepatitis C virus (HCV) prevalence in the world. Numerous HCV prevalence studies have published various estimates from different Egyptian communities, suggesting that Egypt, relative to the other nations of the world, might be experiencing an intense ongoing HCV transmission. Objective: To investigate the trend in HCV prevalence among the general population in Egypt with respect to Read More
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Metabolic syndrome and obesity in early pregnancy and birth outcomes: Qatari mother-child cohort study
Authors: Eleni Fthenou, Jamal Al-Khanji, Faleh Mohammed Ali and Eman SadounBackground: Metabolic syndrome is associated with the rising incidence of obesity in developed countries, particularly in urban settings and is reaching epidemic proportions. Qatar, a rapidly modernizing country, has witnessed dramatic changes in urbanization and lifestyle. Recent studies demonstrate a significant prevalence of obesity and metabolic syndrome in Qatari population. According to a New York Times article (Ap Read More
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Inferring nonlinear and sparse gene regulatory networks
Authors: Amina Noor, Erchin Serpedin, Hazem Nounou, Mohamed Nounou and Marwa QaraqeBackground and Objectives: Gene regulatory networks model the interactions among the genes and provide a decision rule describing activation and repression of each gene via various proteins. In order to be able to capture the complex gene interactions efficiently, it is imperative to develop algorithms that model the nonlinear interactions among the genes. This work considers the problem of inferring gene regulatory networ Read More
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Improving patient's outcome through an advanced postgraduate medical education program for injured patients in Qatar
Authors: Ruben Peralta, A. Parchani, A. Zarour, H. Al-Thani and R. LatifiBackground and Objectives: Trauma is the leading cause of death among the young population in the Middle East, including Qatar. A significant number of trauma and injured patients will require sophisticated critical care services and a disproportionately high level of hospital resources are centered within critical care units. The introduction of an advanced ACGME structured Trauma & Critical Care (TCC) Fellowship Program Read More
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Improving type 2 diabetic patient knowledge, attitude and practice towards diabetes selfcare by implementing a community-based interactive approach - diabetes mellitus strategy
Authors: Mohamed Izham, Titien Siwi Hartayu and Suryawati SriBackground: Community-based interactive approach-diabetes mellitus (CBIA-DM) is an active self learning method. CBIA is a method used for public education which emphasizes the active role of participants in looking for information. The intention of CBIA is to empower participants to seek and critically assess information about their treatment. Objectives: This study is aimed at improving type 2 diabetic patients knowle Read More
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Identification of novel genes causing autosomal recessive disorders in Qatari population using whole exome sequencing
Background Consanguinity and endogamy are common in the Middle East, resulting in a higher frequency of autosomal recessive (AR) disorders. This consanguinity facilitates discovery of disease causative genes particularly after introduction of the new techniques such as Whole Exome Sequencing (WES). In order to reduce the overall socio-economic burden of such diseases, the development of diagnostic tools and prev Read More
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Identification of novel anti-apoptotic signals in prostate cancer stem cells
Authors: Konduru S Sastry, Dhanya Kizhakayil and Lotfi ChouchaneBackground: Prostate cancer (PC) remains the second leading cause of male death in Western countries and has been on the rise in Qatar during the last decade. Recent studies established that unlike differentiated PC cells, PC stem cells (PCSC) display high tumorigenic and metastatic potential and become resistant to current therapy. Therefore therapeutic success depends on the ability to effectively kill PCSC. The dise Read More
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Hyperglycemia-induced stress granule formation in mouse microvascular endothelial cells
Background and Objective: Cells exposed to stress conserve energy for the repair of cellular damage by inhibiting translational initiation. The stress stimuli can trigger several stress response pathways leading to global translational attenuation, chiefly by the phosphorylation of eIF2α and disruption of the 43S assembly, which correlates to the compartmentalization of untranslated polyadenylated mRNA in discrete cytoplas Read More
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Hydrogen peroxide induces stress granule formation independent of eukaryotic initiation factor 2α phosphorylation
Authors: Ken Fujimura, Daniel Scharengella, Victoria Ivanova, Pavel Ivanov, Paul Anderson and Mohamed EmaraBackground and Objectives: In cells exposed to environmental stress, inhibition of translation initiation conserves energy for the repair of cellular damage. Untranslated mRNAs that accumulate in these cells move to discrete cytoplasmic foci known as stress granules (SGs). The assembly of SGs helps cells to survive under adverse environmental conditions. SGs are formed as a consequence of eIF2α phosphorylation that inhi Read More
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HIV prevention randomized clinical trials: quantitative and analytical insights on the failure to measure efficacy
Authors: Diego Cuadros, Laith Abu-Raddad and Gisela Garcia-RamosBackground & Objectives: Despite the solid foundation on epidemiological evidence and basic science research, nearly 90% of the randomized controlled trials (RCT) designed to measure the efficacy of interventions on HIV incidence failed to measure a statistically significant efficacy against HIV incidence. Here, we propose the use of computer simulations to control trials as a useful tool to overcome the difficulty of effect size Read More
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