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Zeinab El-Taher Hassan, Nehad M Farag, Wael M Elshemey
This work aims at designing a computer program to calculate the necessary amount of shielding for a given or proposed linear accelerator room design in radiotherapy. The program (Shield Calculation in Radiotherapy, SCR) is developed using Microsoft Visual Basic. It applies the treatment room shielding calculations of the NCRP report no. 151 to calculate proper shielding thicknesses for a given linear accelerator treatment room design. The program is composed of six main user-friendly interfaces. The first one enables the user to upload whatever treatment room design of his choice and to measure the distances required for shielding calculations...
March 22, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
Maryam Dendana, Wael Bahia, Ramzi R Finan, Mariam Al-Mutawa, Wassim Y Almawi
BACKGROUND: This study addresses whether the association of adiponectin gene (ADIPOQ) variants with idiopathic recurrent pregnancy loss (RPL) is influenced by obesity. METHODS: Retrospective case-control study performed in outpatient obstetrics/gynecology clinics. Study subjects comprised 308 women with RPL, defined as ≥ 3 consecutive miscarriages of unknown etiology, and 310 control women. ADIPOQ genotyping was done by allele exclusion method on real-time PCR...
March 20, 2018: Journal of Translational Medicine
Mathieu Verdurand, Elise Levigoureux, Sophie Lancelot, Waël Zeinyeh, Thierry Billard, Isabelle Quadrio, Armand Perret-Liaudet, Luc Zimmer, Fabien Chauveau
The accumulation of aggregated alpha-synuclein ( α -syn) in multiple brain regions is a neuropathological hallmark of synucleinopathies. Multiple system atrophy (MSA) is a synucleinopathy characterized by the predominant cerebral accumulation of aggregated α -syn as cytoplasmic glial inclusions (CGI). A premortem diagnosis tool would improve early diagnosis and help monitoring disease progression and therapeutic efficacy. One Positron Emission Tomography (PET) study suggested [11 C]BF-227 as a promising radiotracer for monitoring intracellular α -syn deposition in MSA patients...
2018: Contrast Media & Molecular Imaging
Nishant Patel, Jeffrey Forris Beecham Chick, Joseph J Gemmete, Jordan C Castle, Narasimham Dasika, Wael E Saad, Ravi N Srinivasa
OBJECTIVE: The objective of our study was to report the technique, complications, and clinical outcomes of interventional radiology-operated cholecystoscopy with stone removal for the management of symptomatic cholelithiasis. MATERIALS AND METHODS: Ten (77%) men and three (23%) women (mean age, 65 years) with symptomatic cholelithiasis underwent cholecystostomy followed by interventional radiology-operated cholecystoscopy with stone removal. Major comorbidities precluding cholecystectomy included prior cardiac, pulmonary, or abdominal surgery; cirrhosis; sepsis with hyponatremia; seizure disorder; developmental delay; and cholecystoduodenal fistula...
March 16, 2018: AJR. American Journal of Roentgenology
Naif O Al-Harbi, Ahmed Nadeem, Sheikh F Ahmad, Moureq R Alotaibi, Abdullah F AlAsmari, Wael A Alanazi, Mohammad M Al-Harbi, Ahmad M El-Sherbeeny, Khalid E Ibrahim
Sepsis affects millions of people worldwide and is associated with acute kidney injury (AKI). Innate and adaptive immune cells have been shown to play an important role in AKI through release of various inflammatory mediators which include reactive oxidant species (ROS). Acetate, a short chain fatty acid produced by gut bacteria has anti-inflammatory properties and has also been shown to modulate oxidative stress in different immune cells. Effects of acetate have been shown to be both GPR43 dependent and independent in different cells/tissues...
March 12, 2018: International Immunopharmacology
LaDonya Jackson, Wael Eldahshan, Susan C Fagan, Adviye Ergul
For many years, modulators of the renin angiotensin system (RAS) have been trusted by clinicians for the control of essential hypertension. It was recently demonstrated that these modulators have other pleiotropic properties independent of their hypotensive effects, such as enhancement of cognition. Within the brain, different components of the RAS have been extensively studied in the context of neuroprotection and cognition. Interestingly, a crosstalk between the RAS and other systems such as cholinergic, dopaminergic and adrenergic systems have been demonstrated...
March 15, 2018: International Journal of Molecular Sciences
Asmaa Y Elsary, Alkassem A Elgameel, Wael S Mohammed, Osman M Zaki, Shaimaa A Taha
To assess the prevalence of hypocalcemia in outpatient clinic neonates and its relation to vitamin D and calcium supplementation.  Methods: This cross-sectional analytical study was conducted at the University Teaching Hospital from May to October 2016. Data were collected from 100 neonates by interviewing mothers using a structured questionnaire; which included socio-demographic information, maternal and neonatal history; in addition to investigations of serum calcium total and ionized and serum vitamin D level...
March 2018: Saudi Medical Journal
Abdulla Shehab, Khalid F AlHabib, Akshaya Srikanth Bhagavathul, Ahmad Hersi, Hussam Alfaleh, Mostafa Q Alshamiri, Anhar Ullah, Khadim Sulaiman, Wael Almahmeed, Jassim Al Suwaidi, Alwai A Alsheikh-Ali, Haitham Amin, Mohammed Al Jarallah, Amar M Salam
BACKGROUND: Most of the available literature on ST-Elevated myocardial infarction (STEMI) in women was conducted in the developed world and data from Middle-East countries was limited. AIM: To examine the clinical presentation, patient management, quality of care, risk factors and in-hospital outcomes of women with acute STEMI compared with men using data from a large STEMI registry from the Middle East. METHODS: Data were derived from the third Gulf Registry of Acute Coronary Events (Gulf RACE-3Ps), a prospective, multinational study of adults with acute STEMI from 36 hospitals in 6 Middle-Eastern countries...
March 14, 2018: Current Vascular Pharmacology
Devesh Vashishtha, William Sieber, Brittany Hailey, Kristen Guirguis, Alexander Gershunov, Wael K Al-Delaimy
Introduction: The purpose of this study was to determine whether heat waves are associated with increased frequency of clinic visits for ICD-9 codes of illnesses traditionally associated with heat waves. Methods: During 4 years of family medicine clinic data between 2012 and 2016, we identified six heat wave events in San Diego County. For each heat wave event, we selected a control period in the same season that was twice as long. Scheduling a visit on a heat wave day (versus a non-heat wave day) was the primary predictor, and receiving a primary ICD-9 disease code related to heat waves was the outcome...
March 10, 2018: Family Practice
Tauheed Ishrat, Abdelrahman Y Fouda, Bindu Pillai, Wael Eldahshan, Heba Ahmed, Jennifer L Waller, Adviye Ergul, Susan C Fagan
The aim of this translational, randomized, controlled, blinded preclinical trial was to determine the effect of compound 21 (C21) in embolic stroke. Rats were subjected to embolic-middle cerebral artery occlusion (eMCAO). They received C21 (0.01, 0.03 and 0.06 mg/kg/d) or saline (orally) for five days, with the first-dose given IV at 3 h post-eMCAO. For the time-window study, the optimal-dose of C21 was initiated at 3, 6 or 24 h post-eMCAO and continued for five days. For the combinatorial study, animals received IV-tissue plasminogen activator (tPA) at either 2 or 4 h, with IV-C21 (0...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
Ivan Koychev, John Francis William Deakin, Wael El-Deredy, Corinna Haenschel
BACKGROUND: Working memory (WM) deficits are a core feature of schizophrenia. Electrophysiological studies suggest that impaired early visual processing may contribute to impaired WM in the visual domain. Abnormal N-methyl-D-aspartate (NMDA) receptor function has been implicated both in WM and in early visual processing deficits in schizophrenia. We investigated whether ketamine, a noncompetitive NMDA antagonist, would replicate in healthy volunteers the WM performance and early visual processing abnormalities we and others have reported in patients with schizophrenia...
April 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
Christoph Oing, Pierre Tennstedt, Ronald Simon, Jennifer Volquardsen, Kerstin Borgmann, Carsten Bokemeyer, Cordula Petersen, Ekkehard Dikomey, Kai Rothkamm, Wael Y Mansour
Here we report that BCL2 blocks DNA double strand break (DSB) repair via nonhomologous end-joining (NHEJ), through sequestration of KU80 protein outside the nucleus. We find that this effect is associated with a repair switch to the error-prone PARP1-dependent end-joining (PARP1-EJ). We present in-vitro proof-of-concept for therapeutic targeting of this switch using PARP inhibitor to specifically enhance the radiosensitivity of BCL2-overexpressing cells. Given its erroneous behavior, PARP1-EJ might allow for the accumulation of genetic alterations and tumor progression...
March 8, 2018: Cancer Letters
Yi-Lung Chen, Han-Yi Fu, Tzong-Huei Lee, Chao-Jen Shih, Lina Huang, Yu-Sheng Wang, Wael Ismail, Yin-Ru Chiang
The environmental release and fate of estrogens are becoming an increasing public concern. Bacterial degradation has been considered the main process for eliminating estrogens from wastewater treatment plants. Various bacterial isolates are reportedly capable of aerobic estrogen degradation and several estrogen degradation pathways have been proposed in the proteobacteria and actinobacteria. However, the ecophysiological relevance of estrogen-degrading bacteria in the environment is unclear. In this study, we investigated estrogen degradation pathway and corresponding degraders in activated sludge collected from the Dihua Sewage Treatment Plant, Taipei, Taiwan...
March 9, 2018: Applied and Environmental Microbiology
Sonal Singh, Caitrin W McDonough, Yan Gong, Wael A Alghamdi, Meghan J Arwood, Salma A Bargal, Leanne Dumeny, Wen-Yi Li, Mai Mehanna, Bradley Stockard, Guang Yang, Felipe A de Oliveira, Natalie C Fredette, Mohamed H Shahin, Kent R Bailey, Amber L Beitelshees, Eric Boerwinkle, Arlene B Chapman, John G Gums, Stephen T Turner, Rhonda M Cooper-DeHoff, Julie A Johnson
BACKGROUND: Thiazide and thiazide-like diuretics are first-line medications for treating uncomplicated hypertension. However, their use has been associated with adverse metabolic events, including hyperglycemia and incident diabetes mellitus, with incompletely understood mechanisms. Our goal was to identify genomic variants associated with thiazide-like diuretic/chlorthalidone-induced glucose change. METHODS AND RESULTS: Genome-wide analysis of glucose change after treatment with chlorthalidone was performed by race among the white (n=175) and black (n=135) participants from the PEAR-2 (Pharmacogenomic Evaluation of Antihypertensive Responses-2)...
March 9, 2018: Journal of the American Heart Association
Wael Ahmad, Youssra Obeidi, Payman Majd, Jan Sigge Brunkwall
OBJECTIVE: This study aimed to evaluate the accuracy, as well as the effectiveness of 2D-3D registration method of image fusion technology (IF) in endovascular aortic surgery (EVAR). METHODS: We performed a review of our institutional endovascular aortic database of patients who had undergone EVAR between 2011 and 2015 before and after the installation of a 3D image fusion CT system in our hybrid operating room. RESULTS: The accuracy was assessed in 14 endovascular procedures and showed a median registration error of 1...
March 6, 2018: Annals of Vascular Surgery
Bo Xu, Paul Cremer, Wael Jaber, Stuart Moir, Serge C Harb, L Leonardo Rodriguez
Exercise stress electrocardiography is unreliable as a test for obstructive coronary artery disease (CAD) if the patient has left bundle branch block. The authors provide an algorithm for using alternative tests: exercise stress echocardiography, dobutamine echocardiography, computed tomographic (CT) angiography, and nuclear myocardial perfusion imaging.
March 2018: Cleveland Clinic Journal of Medicine
Ahmed El-Tawargy, David Stock, Markus Gallei, Wael Ramadan, Mamdoh Shams El-Din, Günter Reiter, Renate Reiter
We have investigated the morphologies of Langmuir layers of charged, polymeric hard-core/interlayer/soft-shell (CIS) nanoparticles spread at the air-water interface. Depending on various mutual interactions, which are correlated to the areal densities of the deposited nanoparticles, we observed ordered patterns of non-dense and closed-packed arrangements of CIS nanoparticle ordering. At low areal densities, we found an almost regular distribution of the charged CIS nanoparticles on the water surface, which resulted from long-range repulsive electrostatic interactions between them...
March 7, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Wael Zakaria, A Farghali, A Moneim, N Imam, Samaa El-Dek
ZnS and their Cu doped nanoclusters (NCs) was synthesized successfully using wet chemical route with different Cu contents. The crystalline structure was investigated using X-ray powder diffraction which assured the single-phase formation in cubic symmetry. High resolution transmission electron microscope (HR-TEM) indicated the nanoclusters microstructure with size ranging from 2-4 nm. Butterfly hysteresis (M-H) loop is observed at room temperature with large values of coercivity for the Cu content of x = 0...
March 7, 2018: Nanotechnology
Rami Rhaiem, Houcine Maghrebi, Wael Rebai, Amine Makni, R Ksantini, Zoubaier Ben Safta
BACKGROUND: Laparoscopic gastric band (LAGB) has gained popularity among the surgical community since its first description in the early 90'. Actually, it is the third most practiced bariatric procedure in the world. The mean advantage of LAGB is a low rate of early postoperative morbidity. These satisfactory early results are in complete opposition with relatively high long term morbidity and a high rate of weight loss failure. AIM: Long term morbidity, weight loss and life quality index after LAGB were analyzed...
June 2017: La Tunisie Médicale
Chawki Jebali, Lotfi Boukadida, Ali Ousgi, Wael Chaabene, Borhen Shili, Mohamed Amin Naggara, Riadh Boukef
INTRODUCTION: Inhaled nitrous oxide (MEOPA) ensures short-term analgesia of a patient in spontaneous ventilation through a mask. It ensures analgesic coverage during the painful gesture while saving to the patient the phenomena of memorization. AIM: To study the efficacy and safety of the use of MEOPA during the make stitches. METHODS: Randomized double blind prospective study including any patient aged > 16 years admitted to the emergency for make stitches during a period of 3 months...
June 2017: La Tunisie Médicale
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