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Jayasheelan Vaithilingam, Ehab Saleh, Ricky D Wildman, Richard J M Hague, Christopher J Tuck
Three dimensional inkjet printing of multiple materials for electronics applications are challenging due to the limited material availability, inconsistencies in layer thickness between dissimilar materials and the need to expose the printed tracks of metal nanoparticles to temperature above 100 °C for sintering. It is envisaged that instead of printing a dielectric and a conductive material on the same plane, by printing conductive tracks on an angled dielectric surface, the required number of silver layers and consequently, the exposure of the polymer to high temperature and the build time of the component can be significantly reduced...
June 13, 2018: Scientific Reports
Minxiang Zeng, Pingmei Wang, Jianhui Luo, Baoliang Peng, Bin Ding, Lecheng Zhang, Ling Wang, Dali Huang, Ian Echols, Ehab Abo Deeb, Eric Bordovsky, Chang-Hyun Choi, Carlos Ybanez, Patricia Meras, Evan Situ, M Sam Mannan, Zhengdong Cheng
We demonstrate a facile route to in situ growth of lyotropic zirconium phosphate (ZrP) nanoplates on textiles via an interfacial crystal growing process. The as-prepared hybrid membrane shows a hierarchical architecture of textile fibers (porous platform for fluid transport), ZrP nanoplatelets (layered scaffolds for chemical barriers), and octadecylamine (organic species for superhydrophobic functionalization). Interestingly, such hybrid membrane is able to separate the oily wastewater with high separation efficiency of 99...
June 12, 2018: ACS Applied Materials & Interfaces
Ehab F Salim, Gaser A Ali
BACKGROUND: There are different techniques for thoracoscopic sympathectomy for management of primary hyperhidrosis. Each technique has the advantage of giving good surgical results but may cause complications which depend on the level of sympathectomy used in each technique. METHODS: From October 2012 to August 2016, a total number of 120 patients (of primary palmar and axillary hyperhidrosis) were enrolled in this prospective randomized study. Patients were randomized preoperatively and divided into two groups: group A (underwent T2, T3, and T4 sympathectomy), and group B (underwent T3 and T4 sympathectomy) with one year of follow-up...
June 7, 2018: Annals of Thoracic Surgery
Cielito C Reyes-Gibby, Jian Wang, Sai-Ching J Yeung, Patrick Chaftari, Robert K Yu, Ehab Y Hanna, Sanjay Shete
Neuropathic pain (NP), defined as pain initiated or caused by a primary lesion or dysfunction in the nervous system, is a debilitating chronic pain condition often resulting from cancer treatment. Among cancer patients, neuropathy during cancer treatment is a predisposing event for NP. To identify genetic variants influencing the development of NP, we conducted a genome-wide association study in 1,043 patients with squamous cell carcinoma of the head and neck, based on 714,494 tagging single-nucleotide polymorphisms (SNPs) (130 cases, 913 controls)...
June 8, 2018: Scientific Reports
Nanis G Allam, Ehab Mostafa M Ali, Samya Shabanna, Elsayed Abd-Elrahman
Cadmium (Cd) is a highly toxic heavy metal, wide occupational and an environmental pollutant, affecting human health. Probiotics especially lactic acid bacteria (LAB) have the capacity to bind, remove and to decrease tissue cadmium levels. The objective was to evaluate the potency of Cd binding capacity, antioxidative properties of probiotic bacteria against cadmium in-vitro and its probable detoxification effect against Cd-induced toxicity in mice. To asses this objective, resistance against cadmium and antioxidative properties (via DPPH radical scavenging and inhibition of lipid peroxidation) were estimated for thirteen probiotic bacteria...
2018: Iranian Journal of Pharmaceutical Research: IJPR
Ehab El Kattan, Mohamed El Kattan, Omnia A Elhiny
AIM: This study aimed to attempt to introduce a new extracranial horizontal plane of the head (K plane that extends from SN to SAE bilaterally) that could act as a substitute to the Frankfurt horizontal intracranial reference plane; both clinically and radiographically. MATERIAL AND METHODS: The new K plane depended on three points of the head. The first was the soft tissue nasion (NS) on the interpupillary line when the subject looked forward at a distant point at eye level...
May 20, 2018: Open Access Macedonian Journal of Medical Sciences
Adel Ehab Ibrahim, Hisham Hashem, Hanaa Saleh, Magda Elhenawee
Background: The introduction of monolithic rods and core-shell particles as new morphologies of packing materials different from the conventional totally porous particles resulted in a leap forward for performance in LC. Meanwhile, environmental safety has become increasingly important in many areas, especially in industry and research laboratories. Objective: This study compared the efficiencies of commercially available columns of different lengths and diameters when greener chromatographic conditions were utilized...
May 29, 2018: Journal of AOAC International
Asmaa Ezz El-Dein, Ehab E Khozemy, Serag A Farag, N Abd El-Hamed, I M Dosoukey
The present work introduces a preparation of coating fruits film from natural biodegradable materials with evaluation of its efficiency in keeping the quality of fresh date fruits. Triple blend (Tb) which involved PVA, chitosan (Cs) and tannic (TA) acids was studied in preservation of Rutab (Hyani) date. Antimicrobial characters besides decay of fruits during a cold storage were determined. The blend solutions were exposed to the γ-irradiation (5.0 to 20 kGy) before casting or use. The effects of polymer composition and irradiation dose on the mechanical and thermo-mechanical properties were studied...
May 24, 2018: International Journal of Biological Macromolecules
Sonia T Hassib, Marianne A Mahrouse, Ehab F Elkady, Rawda M Sayed
Topical pharmaceutical preparations containing betamethasone esters are widely prescribed for treatment of severe inflammatory skin conditions. Some betamethasone esters-containing preparations are formulated with either an antibacterial or an antifungal agent or a vitamin D3 derivative. A fast reversed-phase high-performance liquid chromatography method has been developed for the simultaneous determination of three betamethasone esters-containing binary mixtures along with the excipients of their dosage forms using clobetasone butyrate as internal standard...
May 24, 2018: Journal of Chromatographic Science
Irene Beijert, Safak Mert, Viola Huang, Negin Karimian, Sharon Geerts, Ehab O A Hafiz, James F Markmann, Heidi Yeh, Robert J Porte, Korkut Uygun
Background: Steatosis is a major risk factor for primary nonfunction in liver transplantations. Steatotic livers recover poorly from ischemia reperfusion injury, in part due to alterations in the microcirculation, although the exact mechanism is unclear. In this study, we tested if there were any alterations in the shear stress sensing Kruppel-like factor 2 (KLF2) and its likely downstream consequences in the ex vivo perfused human liver endothelium, which would imply perturbations in microcirculatory flow in macrosteatotic livers disrupts laminar flow to evaluate if this is a potential therapeutic target for steatotic livers...
May 2018: Transplantation Direct
Mohamed T Ellabban, Ahmed I Abdul-Aziz, Mona M Salah Fayed, Mai H AboulFotouh, Ehab S Elkattan, Mushira M Dahaba
OBJECTIVE: To elucidate the positional and dimensional temporomandibular joint (TMJ) changes after correction of posterior crossbite in growing patients. MATERIALS AND METHODS: A systematic unrestricted search was done in six databases until June 27, 2017. A manual search in the reference lists of the included studies and gray literature was also performed. The eligibility criteria included randomized controlled trials and prospective nonrandomized controlled clinical trials and a sample of growing subjects with posterior crossbite that required maxillary expansion...
May 22, 2018: Angle Orthodontist
Abdelmoniem Moustafa, Hussam Mohammad Alim, Mohammed Andaleeb Chowdhury, Ehab A Eltahawy
Postthrombotic syndrome is a common long-term complication of proximal lower extremity deep venous thrombosis, which not only significantly affects the quality of life of patients but also imposes a substantial financial burden on our healthcare system. Due to limited awareness and inability of physicians to recognize and treat this condition early, its prevalence is steadily increasing. In this article, we review the pathophysiology, the risk factors involved, diagnostic workup, and the various management options available to treat this condition...
March 5, 2018: American Journal of the Medical Sciences
Rosa Mª Reguer, Ehab Kotb Elmahallaw, Carlos Garcia-Estrada, Ruben Carbajo-Andres, Rafael Balana-Fouce
DNA topoisomerases (Top) are a group of isomerase enzymes responsible for controlling the topological problems caused by DNA double helix in the cell during the processes of replication, transcription and recombination. Interestingly, these enzymes have been known since long to be key molecular machines in several cellular processes through overwinding or underwinding of DNA in all-living organisms. Leishmania, a trypanosomatid parasite responsible for causing fatal diseases mostly in impoverished populations of low-income countries, have a set of six classes of Top enzymes...
May 17, 2018: Current Medicinal Chemistry
Morakot Kaewthamasorn, Mika Takeda, Tawee Saiwichai, Jesse N Gitaka, Sonthaya Tiawsirisup, Yuhei Imasato, Ehab Mossaad, Ali Sarani, Winai Kaewlamun, Manun Channumsin, Suchart Chaiworakul, Wichit Katepongpun, Surapong Teeveerapunya, Jarus Panthong, Dominic K Mureithi, Saw Bawm, Lat Lat Htun, Mar Mar Win, Ahmed Ali Ismail, Abdalla Mohamed Ibrahim, Keisuke Suganuma, Hassan Hakimi, Ryo Nakao, Ken Katakura, Masahito Asada, Osamu Kaneko
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
May 11, 2018: Scientific Reports
Michael Berninger, Christine Erk, Antje Fuß, Joseph Skaf, Ehab Al-Momani, Ina Israel, Martina Raschig, Paul Güntzel, Samuel Samnick, Ulrike Holzgrabe
Human African Trypanosomiasis, also known as African sleeping sickness, is caused by the parasitic protozoa of the genus Trypanosoma. If there is no pharmacological intervention, the parasites can cross the blood-brain barrier (BBB), inevitably leading to death of the patients. Previous investigation identified the quinolone amide GHQ168 as a promising lead compound having a nanomolar activity against T. b. brucei. Here, the role of a fluorine substitution at different positions was investigated in regard to toxicity, pharmacokinetics, and antitrypanosomal activity...
April 30, 2018: European Journal of Medicinal Chemistry
Marwa N El-Nahass, Mai M El-Keiy, Ehab M M Ali
Mesoporous silicate, SBA-16 is one of the most promising supports for horseradish peroxidase. In this study, SBA-16 was synthesized, and anchored to HRP enzyme in the organized porous networks, SBA-16. The mesoporous structures and morphologies of SBA-16 and the anchored HRP enzyme were characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, N2 adsorption-desorption isotherms, low-angle X-ray diffraction and thermogravimetric analysis. The percentage of immobilized HRP was 57%...
May 5, 2018: International Journal of Biological Macromolecules
Tong Zhu, Ehab M Moussa, Madeleine Witting, Deliang Zhou, Kushal Sinha, Mario Hirth, Martin Gastens, Sherwin Shang, Nandkishor Nere, Shubha Chetan Somashekar, Alina Alexeenko, Feroz Jameel
Scale-up and technology transfer of lyophilization processes remains a challenge that requires thorough characterization of the laboratory and larger scale lyophilizers. In this study, computational fluid dynamics (CFD) was employed to develop computer-based models of both laboratory and manufacturing scale lyophilizers in order to understand the differences in equipment performance arising from distinct designs. CFD coupled with steady state heat and mass transfer modeling of the vial were then utilized to study and predict independent variables such as shelf temperature and chamber pressure, and response variables such as product resistance, product temperature and primary drying time for a given formulation...
May 4, 2018: European Journal of Pharmaceutics and Biopharmaceutics
Rima S Al Johi, Gehan S Seifeldein, Ahmed M Moeen, Noha A Aboulhagag, Ehab M Moussa, Diaa A Hameed, Hisham M Imam
Introduction: To assess if the apparent diffusion coefficient (ADC) value of magnetic resonance imaging (MRI) can discriminate between the cell type, histological grade and improve staging of urinary bladder cancer (BC). Material and methods: 102 patients with urinary bladder masses underwent MRI using a 1.5 T machine. T2 weighted and diffusion weighted imaging (DWI) using b values of 0, 150, 500 and 1000 s/mm2 were done. The ADC values of bladder masses were measured...
2018: Central European Journal of Urology
Ehab El Refaee, Steffen Fleck, Marc Matthes, Henry W S Schroeder
We present a 43-old-male who suffered from a slowly progressive loss of vision in the left eye. Magnetic resonance (MR) imaging revealed a well-circumscribed contrast-enhancing lesion in the region of the anterior cavernous sinus and superior orbital fissure that extended into the optic canal. A schwannoma or meningioma was suspected. A transcranial surgery performed at another institution was not successful in removing the tumor and further deterioration of vision occurred. After resection of the left middle turbinate, the sphenoid and maxillary sinus were opened...
April 28, 2018: Operative Neurosurgery (Hagerstown, Md.)
Sahar Maklad, Ehab Mahfouz Reyad, Emad Adel William, Alaa Abouzeid
Background: The aim of the study was to evaluate the efficacy and safety of entecavir (ETV) among chronic hepatitis B (CHB) nucleos(t)ide-naive Egyptian patients. Methods: Forty-eight CHB patients on ETV were included. Males comprised 83.3% (40 cases), while females comprised 16.7% (eight cases). Minimum age was 19 years, while maximum age was 64 years. Hepatitis B envelope antigen (HBeAg)-negative cases were 60.4%. HBeAg-positive cases were 39.6%. Factors including sex, positive HBeAg, baseline hepatitis B virus (HBV) DNA level, baseline alanine aminotransferase (ALT) and aspartate aminotransferase (AST), were evaluated in terms of their predictive role in treatment response, which was defined as a serum HBV DNA decrease of < 10 IU/mL...
April 2018: Gastroenterology Research
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