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Qatar Foundation Annual Research Conference Proceedings Volume 2014 Issue 1
- Conference date: 18-19 Nov 2014
- Location: Qatar National Convention Center (QNCC), Doha, Qatar
- Volume number: 2014
- Published: 18 November 2014
161 - 180 of 480 results
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Natural Antioxidants, Antibacterials From Olive Leaf Extracts Used In Cosmetics, Pharmaceutical, And Food Industries
Authors: Fuad Al-rimawi, Imad Odeh, Abdallah Bisher, Hiba Yateem and Mohammad TarawehOlive leaves are rich with polyphenolic compounds which exhibit many activities like antimicrobial, antioxidant activities. Natural compounds from olive leaves are safe antioxidants, antibacterials, and preservatives compared to synthetic ones. In this work, olive leaf samples were collected from different geographical regions of Palestine at different maturation stages. The olive leaves samples were dried, grinded, and extra Read More
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Recombinant Activated Factor Viia For Treatment Of Refractory Lower Gastrointestinal Hemorrhage In A Patient With A Recently Implanted Mechanical Valve
Authors: Amr Salah Omar, Suraj Sudarsanan, Hesham Ahmed Ewila and Ali KindawiAbstract Introduction Bleeding is a common complication after cardiac surgery. However, lower gastrointestinal bleeding is not usually associated with this type of surgery. Case presentation A 50-year-old man with a history of aortic regurgitation underwent elective mechanical valve replacement under cardiopulmonary bypass. He experienced a complicated intraoperative course involving unexplained cardiac arrest f Read More
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Influence Of Time In Range Glucose On Glycemic Control Outcome After Cardiac Surgery. A Qatari Experience
Background: Optimal glycemic control in postoperative cardiac patients is still under debate. In an attempt to reduce wound infection, and improving overall mortality variable targets had been prescribed. Aim of the work: To study the outcome of glucose control, with a target of 6 to 8.1mmol/L, and the associated factors related to poor control. Methodology: We evaluated 227 consecutive patients diabetics and non-d Read More
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Role Of Recombinant Factor Viia In The Management Of Severe Perioperative Bleeding In Cardiac Surgery, Qatari Experience
Introduction: Intractable bleeding is one of common adverse events after cardiac surgeries. Recombinant activated factor VII (rVIIa) showed efficiency in controlling postoperative intractable bleeding (1). Its usage after cardiac surgeries should be more investigated. Patients and methods: - All patients received rVIIa post cardiac surgeries over a period of two years were included in a retrospective descriptive study. All patie Read More
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Post Cardiac Surgery Statins Related Morbidity
Authors: Sameh Aboulnaga, Ahmed Mahfouz, Amr Omar, Hisham Ewila, Alejandro Tuli and R SinghAbstract Introduction: The notion of the favorable outcome related to continuation of statins in the perioperative cardiac surgery settings had gained wide approbation,1 but the complications related to statins therapy in this period remains a major concern. Aim of the work: To study whether perioperative treatment with statins could be associated with increased post-operative complications in terms of increased liver Read More
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Differential Expression Of Small Rnas In Anchorage Independent Metastatic Tumor Models Of Ovarian Cancer Cell Lines
Authors: Eman Al-dous, Thasni Azis, Yasmin Mohamoud and Joel MalekBackground: Small RNAs play an essential role in fundamental biological processes such as differentiation, proliferation, apoptosis and homeostasis. Evidence suggests that small RNAs may also play function in Cancer progression. The conventional in-vitro two-dimensional (2D) monolayer cell culture models are not sufficient to explain the exact mechanism behind tumor invasion and metastasis. The objective of this study is to Read More
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Novel Isosteviol Derivatives Induced Apoptosis In Human Lung Cancer
Authors: Ahmed Malki and Stephen BergmeierBackground. Cancer metastasis is the major cause of cancer death. We previously reported novel isosteviols derivatives which induced cytotoxicity in lung cancer cells. The understanding of mechanisms which regulate lung cancer sensitivity to our novel isosteviol derivatives is necessary for development of novel set of anticancer derivatives. Aims. Investigate the molecular mechanisms of the optimized ring novel isosteviol d Read More
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The Epidemiology Of Hepatitis C Virus In Yemen: A Systematic Review And Meta-analysis
Authors: Karima Chaabna and Laith Abu RaddadBackground and Objective: In the Middle East and North Africa, hepatitis C virus (HCV) infection distribution appears to present a wide range of prevalence. The scale and nature of HCV infection exposure in Yemen is poorly known. The objective of this study was to establish the national population-level HCV prevalence in Yemen and to characterize the epidemiology of this infection in the Yemeni population. Methods: We Read More
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Chicken Is For The Birds: Changing The Deadly Driving Behaviors Of Young Qatari Men
Authors: Susan Dun, Susan Pak, Shaikha Alnaimi, Rouda Al-meghaiseeb, Ibrahim Alhashmi, Mohammed Buhmaid and Owais AliQatar Research Grand Challenges Areas: 1. Integrated health management; cultivate healthy behaviors through public health, safety... campaigns. 2. Road Safety: Mitigate Accidents. Introduction Motor vehicle collisions (MVC) in Qatar are at epidemic rates and expected to continue to rise to 220,000 per year by 2015 (ElGhanem, 2012). The fatalities and economic costs associated with traffic accidents are high in Qatar, with o Read More
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Hiv Among People Who Inject Drugs In The Middle East And North Africa: Systematic Review And Data Synthesis
Background It is widely perceived that little is known about the epidemiology of HIV infection among people who inject drugs (PWID) in the Middle East and North Africa (MENA). The primary objective of this study was to assess the status of the HIV epidemic among PWID in MENA by describing HIV prevalence and incidence. Secondary objectives were to describe the risk behavior environment and the HIV epidemic potential am Read More
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Molecular Determinants Of The Store-operated Ca2+ Entry Channel Orai1 Trafficking In Mammalian Cells
Intracellular calcium ion is a universal messenger that plays a critical role in wide range of physiological functions and failure to maintain calcium homeostasis is linked to cellular dysfunctions in several diseases. Store operated calcium entry (SOCE) is a fundamental Ca2+ influx pathway at the cell membrane that is activated in response to intracellular store depletion. The SOCE machinery consists of the ER Ca2+ sensor STIM1, Read More
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Identifying Key Factors For Type Ii Diabetes Mellitus Prevention Interventions In Qatar
Background: Type II Diabetes Mellitus (DM) is one of the leading chronic diseases in Qatar as well as worldwide. However, the risk factors for DM in Qatar and their prevalence are not well understood. We conducted a case-control study with the specific aim of estimating, based on data from outpatients with DM in Qatar (cases) and inpatient/outpatient controls, the association between demographic/lifestyle factors and DM. W Read More
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The Impact Of Scaling Up Voluntary Medical Male Circumcision As An Hiv Intervention In South Sudan
Authors: Susanne F. Awad and Laith J. Abu-raddadBackground: Voluntary medical male circumcision (VMMC) reduces the risk of HIV acquisition in men. Though VMMC programs are being scaled up across sub-Saharan Africa (SSA), no VMMC program has been initiated in the world's youngest nation, South Sudan. The possibly growing HIV epidemic in this nation, currently at a prevalence of 3%, and the stark geographic variability in prevalence, suggests an opportunity for c Read More
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Guidelines For The Use Of Negative Pressure Incision Management To Reduce Wound Complications Following Heart Surgery
Background: Negative Pressure Wound Therapy (NPWT) is well-established in the management of infected surgical wounds. However, it is a relatively new modality of treatment for the protection of clean surgical sites. This study was aimed at developing guidelines for the use of negative pressure incision management to prevent surgical wound complications after heart surgery. Methods: In this prospective study, we inclu Read More
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Nuclear Transport Drugs For Cancer: Bench To Bedside
Authors: Asfar S Azmi, Irfana Muqbil and Ramzi M MohammadTrafficking of biological materials across nuclear membrane is an evolutionarily conserved mechanism that maintains normal eukaryotic cell homeostasis. Eukaryotes shuttle proteins and RNAs in and out of the cell nucleus using highly complex gated machinery. Smaller entities can enter and exit the nuclear pore through diffusion. The movement of most of the proteins and RNAs, however, requires active transport that is Read More
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Robot-assisted Excision Of An Unusual Apical Pericardial Hydatid Cyst
More LessBackground: a 30 year old gentleman was referred to our in thoracic surgery clinic with an incidental finding of an abnormal shadow around the apical region of the heart on the chest radiograph. He was asymptomatic and non smoker and he had no chronic medical illness in the past. He had no specific findings on physical examination. Echocardiogram revealed rounded cyst in the pericardium around the hear apex measurin Read More
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Role Of Stim1 And Orai1 In Mammalian Oocyte Activation
Authors: Satanay Hubrack, Ethel Adap, Stefan Feske and Khaled MachacaUpon fertilization, the mammalian oocyte undergoes a series of Ca2+ oscillations, which results in its activation and initiation of embryo development. It is believed that these periodic and extended Ca2+ responses are a consequence of intracellular Ca2+ release coupled to Ca2+ influx across the plasma membrane due to the activation of a process known as Store Operated Calcium Entry (SOCE). The underlying Read More
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In Vivo Characterization Of A New Mouse Model Expressing The Na+/h+ Exchanger Isoform 1 Of Dilated Cardiomyopathy
Rational: Heart failure is a common, costly, and frequently fatal disease. One in three cases of heart failure is due to dilated cardiomyopathy. NHE1 expression and activity are increased in this cardiac defect. We have previously shown that elevated activity of NHE1 in the cardiomyocytes induced cardiac hypertrophy in transgenic mice. However, it protected the myocardium following ischemia/reperfusion. This overexpression of a Read More
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Role Of Inflammatory Cells In Insulin Resistance-associated Impairment Of Preadipocytes Differentiation
Authors: Shamma Abdullah Almuraikhy and Mohamed ElrayessWe have shown previously that insulin-resistance is associated with impairment of preadipocyte differentiation and increased proinflammatory cytokines release in stromal vascular fraction (SVF) cultures. In order to investigate whether depletion of potential sources of these cytokines is sufficient to rescue preadipocyte differentiation, we examined the ability of SVF cells to differentiate into mature adipocytes following de Read More
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To Be Or Not To Be: Mechanisms Of Regulation Of Stim1 By Its 3'utr In Breast Cancer
Authors: Rashmi Pradyumna Kulkarni, Nancy Nader, Ethel Alcantara-adap, Maya Dib and Khaled MachacaThe endoplasmic reticulum (ER) functions as a storehouse for intracellular calcium. STIM1, a calcium sensor, localizes mostly to the ER membrane. Following Ca2+ store depletion, STIM1 forms puncta that localize to the cortical ER and bind Orai1, a plasma membrane Ca2+ channel, to allow Ca2+ influx. This is the predominant pathway for Ca2+ influx in non-excitable cells and is referred to as Store-Operated Calcium Entry ( Read More
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