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mohamed abdallah

Raghad Mubarak Aljuhaysh, Nagah Mohamed Abo El-Fetoh, Malak Ibrahim Alanazi, Afaf Shuaib Albaqawi, Wafa Mohammed Alanazi, Najah Salah Alanazi, Reham Muqbil Alanazi, Atheer Mutab Alanazi, Eiman Mohammad Alnemer, Rahma Abdulhadi Alenezi, Tasleem Khoudier Alabdullatif, Rehab Abdallah Alanazi, Samiyah Sarhan Alanazi, Kawthar Saeed Alsultan, Ibtisam Matan Alanazi, Duaa Sami Alsunayni
Background and aim: Rh isoimmunization still contributes to the neonatal morbidity and mortality due to non-immunization, under-immunization, and in rare cases, false Rh typing. The main objective of this study was to determine the prevalence of Rh incompatibility, mothers' knowledge about Rh incompatibility, mothers' knowledge about anti-D immunoglobulin and to show the pregnancy outcome of Rh negative mothers. Methods: A cross-sectional study was carried out at the Maternity and Children Hospital in Arar city from November 2016 to May 2017...
December 2017: Electronic Physician
Carlos E Cardenas, Rachel E McCarroll, Laurence E Court, Baher A Elgohari, Hesham Elhalawani, Clifton D Fuller, Mona J Kamal, Mohamed A M Meheissen, Abdallah S R Mohamed, Arvind Rao, Bowman Williams, Andrew Wong, Jinzhong Yang, Michalis Aristophanous
PURPOSE: Automating and standardizing the contouring of clinical target volumes (CTVs) can reduce interphysician variability, which is one of the largest sources of uncertainty in head and neck radiation therapy. In addition to using uniform margin expansions to auto-delineate high-risk CTVs, very little work has been performed to provide patient- and disease-specific high-risk CTVs. The aim of the present study was to develop a deep neural network for the auto-delineation of high-risk CTVs...
February 7, 2018: International Journal of Radiation Oncology, Biology, Physics
Sabrin R M Ibrahim, Hossam M Abdallah, Ali M El-Halawany, Alaa M Nafady, Gamal A Mohamed
A new prenylated xanthone, mangostanaxanthone VIII (7) and six known metabolites: gartanin (1), 1,3,8-trihydroxy-2-(3-methyl-2-butenyl)-4-(3-hydroxy-3-methylbutanoyl)-xanthone (2), rubraxanthone (3), 1,3,6,7-tetrahydroxy-8-prenylxanthone (4), garcinone C (5), and xanthone I (9-hydroxycalabaxanthone) (6) were separated from the EtOAc-soluble fraction of the air-dried pericarps of Garcinia mangostana (Clusiaceae). Their structures have been verified on the basis of spectroscopic data analysis as well as comparison with the literature...
March 7, 2018: Natural Product Research
Mohamed Shaban, Fatma Mohamed, Semsem Abdallah
Dirt and microorganisms are the major problems in textiles which can generate unpleasant odor during their growth. Here, zinc oxide (ZnO) nanoparticles prepared by sol-gel method were loaded on the cotton fabrics using spin coating technique to enhance their antimicrobial properties and water repellency. The effects of ZnO precursor concentration, precursor solution pH, number of coating runs, and Mg doping percent on the structures, morphologies, and water contact angles (WCA) of the ZnO-coated fabrics were addressed...
March 2, 2018: Scientific Reports
Rafat Milad Mohareb, Amira Elsayed Mahmoud Abdallah, Abeer Abdelazeem Mohamed
The reactivity of compounds 2-(1-(2-chloroacetyl)-1H-benzo[d]imidazol-2-yl)acetonitrile 2 and 3-(1-(2-chloroacetyl)-1H-benzo[d]imidazol-2-yl)-2H-chromen-2-one 8 towards different chemical reagents were studied and a series of novel benzimidazole derivatives were obtained (2-6a-d and 8-12a-d). Moreover, in vitro growth inhibitory effect of the newly synthesized compounds were evaluated in term of [IC50  µM] against the six cancer cell lines, human lung carcinoma (A549), lung cancer (H460), human colorectal (HT29), gasteric cancer cell (MKN-45), glioma cell line (U87MG) and cellosaurus cell line (SMMC-7721) where foretinib was used as standard reference...
2018: Chemical & Pharmaceutical Bulletin
Fayez Hamam, Ahmed Eldalo, Qasem Abdallah, Ibrahim Al-Deeb, Saleh Alzahrani, Abdullah Alwagdani, Ahmed Alotaibi, Abdel-Rahman Nasr, Yaser Gouda, Khaled Mohamed
Huernia Sp. Nov. aff. Boleana, Apocynaceae, grows in the high mountains of southwest Saudi Arabia and is widely used as a remedy for the treatment of diabetes. The present study investigated the anti‑inflammatory, wound healing and inhibitory effects on migration of Huernia Sp. Nov. aff. Boleana. The anti‑inflammatory effect was assessed in mice using formalin‑induced edema. Wound healing effects were assessed in rats using a circular excision wound model. An in vitro 'scratch' test was used to investigate the inhibitory effects on melanoma cell (B16‑F10) migration...
February 15, 2018: Molecular Medicine Reports
Mohamed Abou-Elwafa Abdallah, Martin Sharkey, Harald Berresheim, Stuart Harrad
While there are no regulatory fire safety obligations for polystyrene (PS) when used as packaging material, concerns exist that such packaging material may contain the flame retardant hexabromocyclododecane (HBCDD) as a result of uncontrolled recycling activities. To evaluate these concerns, we collected 50 samples of PS packaging materials from the UK and 20 from Ireland. HBCDD was detected in 63 (90%) of samples, with concentrations in 4 samples from Ireland exceeding the EU's low POP concentration limit (LPCL) of 0...
February 15, 2018: Chemosphere
Mohamed El-Shebiney, Nehal El-Mashad, Wael El-Mashad, Ahmed A El-Ebiary, Abdallah E Kotkat
PURPOSE: The purpose of this study is to determine radiotherapy (RT) dose-volumetric threshold of radiation-induced hypothyroidism (HT) in head and neck squamous cell carcinoma (HNSCC) patients. PATIENTS AND METHODS: The diagnosis of HT in 78 HNSCC patients treated with RT was based on a thyroid stimulating hormone (TSH) level greater than the maximum value of laboratory range. In all patients, dose-volumetric parameters were analyzed according to their relation to development of HT, and thyroid volumes spared from doses ≥10, 20, 30, 40 and 50 Gy (V10, V20, V30, V40 and V50) were analyzed from the dose volume histograms (DVHs)...
March 2018: Journal of the Egyptian National Cancer Institute
Afaf Shuaib Badi Albaqawi, Nagah Mohamed Abo El-Fetoh, Reem Faleh Abdullah Alanazi, Najah Salah Farhan Alanazi, Sara Emad Alrayya, Arwa Nughaymish Mulfi Alanazi, Shoug Zeid Trad Alenezi, Rehab Abdallah Alrkowi Alanazi, Anfal Muaddi Alshalan, Omar Tabaan Alenezi, Wafaa Mohamed Bakr Ali
Background: Peptic ulcer disease is a multifactorial health problem, and its prevalence and risk factors have changed considerably within the past century. Objective: To determine the prevalence of peptic ulcer among the population of Arar city and to identify risk factors for peptic ulcer and to estimate their relative impact on ulcer incidence. Methods: A cross-sectional study was carried out on the population of Arar city, Northern Saudi Arabia from November 01, 2016 to April 30, 2017...
November 2017: Electronic Physician
Amr Mohamed, Brandon Twardy, Nadine AbdAllah, Alaa Akhras, Hibah Ismail, Magdi Zordok, Kelly Schrapp, Taraq Attumi, Anteneh Tesfaye, Bassel El-Rayes
BACKGROUND: Understanding the molecular mechanisms of colorectal cancer has evolved during the last decade ushering the era of personalized medicine. Alteration of BRAF and PI3K is common in colorectal cancer, and can affect several signaling pathways including EGFR (epidermal growth factor receptor). The aim of this meta-analysis is to evaluate the clinical role of PI3K and BRAF mutations in patients with KRAS wild-type metastatic colorectal cancer (MCRC) receiving an EGFR monoclonal antibody (anti-EGFR) inhibitor as first-line therapy...
February 1, 2018: Journal of Gastrointestinal Cancer
Abdallah Almaghraby, Gehan Magdy, Mohamed Sadaka, Tarek Elzawawy
No abstract text is available yet for this article.
August 2017: Atherosclerosis
Abdallah El Sabbagh, Mackram F Eleid, Jane M Matsumoto, Nandan S Anavekar, Mohammed A Al-Hijji, Sameh M Said, Vuyisile T Nkomo, David R Holmes, Charanjit S Rihal, Thomas A Foley
INTRODUCTION: Three-dimensional (3D) prototyping is a novel technology which can be used to plan and guide complex procedures such as transcatheter mitral valve replacement (TMVR). METHODS: Eight patients with severe mitral annular calcification (MAC) underwent TMVR. 3D digital models with digital balloon expandable valves were created from pre-procedure CT scans using dedicated software. Five models were printed. These models were used to assess prosthesis sizing, anchoring, expansion, paravalvular gaps, left ventricular outflow tract (LVOT) obstruction, and other potential procedure pitfalls...
January 23, 2018: Catheterization and Cardiovascular Interventions
Mohamed F Abdallah, Rudolf Krska, Michael Sulyok
This study was conducted to investigate the natural co-occurrence of 295 fungal and bacterial metabolites in 28 samples of dried date palm fruits collected from different shops distributed in Assiut Governorate, Upper Egypt in 2016. Extraction and quantification of the target analytes were done using the "dilute and shoot" approach followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. In total, 30 toxic fungal metabolites were detected. Among these metabolites, 4 types of ochratoxins including ochratoxin type A and B were quantified in 3 samples (11%) with a contamination range from 1...
January 19, 2018: Journal of Food Science
Mona Kamal, Abdallah S R Mohamed, Clifton David Fuller, Erich M Sturgis, Faye M Johnson, William H Morrison, G Brandon Gunn, Katherine A Hutcheson, Jack Phan, Stefania Volpe, Sweet Ping Ng, Renata Ferrarotto, Steven J Frank, Heath D Skinner, David I Rosenthal, Adam S Garden
BACKGROUND: There are few published studies to guide the treatment of carcinoma metastatic to the neck from an unknown primary (CUP). In this regard, the objective of the current study was to share the authors' current experience treating patients with CUP using intensity-modulated radiation therapy (IMRT), which principally targeted both sides of the neck, the nasopharynx, and the oropharynx. METHODS: This was a retrospective study in which an institutional database search was conducted to identify patients with CUP who received IMRT...
January 16, 2018: Cancer
Mohamad Habous, Alaa Tealab, Mohammed Farag, Tarek Soliman, Ben Williamson, Saad Mahmoud, Amin Elserafy, Zenhom Mekawi, Abdallah Remeah, Mohammed Nassar, Osama Laban, Osama Abdelwahab, Saleh Binsaleh, Simone Giona, David Ralph, John Mulhall
BACKGROUND: The inflatable penile prosthesis (IPP) is typically the preferred implant for Peyronie's disease (PD) and malleable penile prostheses (MPPs) have been discouraged. AIMS: To evaluate the effectiveness and patient satisfaction of the MPP vs IPP in patients with PD. METHODS: Men with PD and erectile dysfunction who elected for penile implant surgery constituted the study population. Preoperatively, demographic and comorbidity parameters were recorded...
March 2018: Sexual Medicine
Mohamed Shaban, Abdallah M Ashraf, Mostafa R Abukhadra
TiO2 nanoribbons (TiO2 NRs) loaded with FeCo-Al2O3 catalyst were synthesized and used as a precursor in the synthesis of TiO2 nanoribbons/carbon nanotubes (TiO2 NRs/CNTs) composite by a chemical vapor deposition (CVD) method. TiO2 NRs and TiO2 NRs/CNTs composite were characterized by XRD, FT-IR, TEM, SEM, EDX and UV-Vis spectrophotometer. The results revealed the formation of TiO2-B and hydrogen titanate nanoribbon like structures by the hydrothermal treatment. After loading TiO2 NRs by FeCo-Al2O3 catalyst and the CVD growth of carbon nanotubes, the synthetic TiO2 nanoribbons converted entirely to TiO2-B nanoribbons with nanopits structure...
January 15, 2018: Scientific Reports
Mahmoud Koko, Mohammed O E Abdallah, Mutaz Amin, Muntaser Ibrahim
BACKGROUND: The conventional variant calling of pathogenic alleles in exome and genome sequencing requires the presence of the non-pathogenic alleles as genome references. This hinders the correct identification of variants with minor and/or pathogenic reference alleles warranting additional approaches for variant calling. RESULTS: More than 26,000 Exome Aggregation Consortium (ExAC) variants have a minor reference allele including variants with known ClinVar disease alleles...
January 15, 2018: BMC Genomics
Imen Mezni, Pierre Galichon, Mohammed Mongi Bacha, Yi-Chun Xu-Dubois, Imen Sfar, David Buob, Sabrina Benbouzid, Rim Goucha, Yousr Gorgi, Ezzedine Abderrahim, Mondher Ounissi, Karine Dahan, Nacera Ouali, Alexandre Hertig, Isabelle Brocheriou, Aly Raies, Taieb Ben Abdallah, Éric Rondeau
Renal allograft loss is most often a chronic process, irrespective of the mechanism at stake. In this prospective study, we studied the expression of epithelial to mesenchymal transition (EMT) markers vimentin and β-catenin by immunohistochemistry in the surveillance biopsy and measured the mRNA encoding vimentin (VIM), CD45, GAPDH and uroplakin 1a (UPK) by quantitative PCR in urinary cells in 75 renal transplant patients. The aim is to establish a simple screening test for chronic renal allograft dysfunction...
January 8, 2018: Néphrologie & Thérapeutique
Mohamed Abdel-Fattah Youssef, Madelon van Wely, Monique Mochtar, Usama Mohamed Fouda, Ashraf Eldaly, Eman Zein El Abidin, Ahmed Elhalwagy, Ahmed Abdel Mageed Abdallah, Sherif Sameh Zaki, Mohamed Sayed Abdel Ghafar, Mohamed Nagi Mohesen, Fulco van der Veen
OBJECTIVE: To evaluate the effectiveness of low doses of gonadotropins and gonadotropins combined with oral compounds compared with high doses of gonadotropins in ovarian stimulation regimens in terms of ongoing pregnancy per fresh IVF attempt in women with poor ovarian reserve undergoing IVF/intracytoplasmic sperm injection (ICSI) treatment. DESIGN: A systematic review and meta-analysis of randomized controlled studies that evaluate the effectiveness of low dosing of gonadotropins alone or combined with oral compounds compared with high doses of gonadotropins in women with poor ovarian reserve undergoing IVF/ICSI treatment...
January 6, 2018: Fertility and Sterility
Ramy Moustafa Moustafa Ali, Ahmed Yaseen Alqutaibi, Amr Salah El-Din Gomaa, Mohamed Farouk Abdallah
PURPOSE: To compare prosthesis and implant failures and marginal bone loss (MBL) resulting from submerged vs nonsubmerged dental implant protocols. MATERIALS AND METHODS: Electronic and manual searches of two databases (MEDLINE [PubMed] and Cochrane) were conducted to identify randomized controlled trials (RCTs) comparing submerged to nonsubmerged dental implant protocols. Data were independently extracted by two reviewers, and meta-analyses were performed for the included RCTs...
January 2018: International Journal of Prosthodontics
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