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https://www.readbyqxmd.com/read/28325038/benefit-of-rare-earth-smart-doping-and-material-nanostructuring-for-the-next-generation-of-er-doped-fibers
#1
Inna Savelii, Laurent Bigot, Bruno Capoen, Cedric Gonnet, Corinne Chanéac, Ekaterina Burova, Alain Pastouret, Hicham El-Hamzaoui, Mohamed Bouazaoui
Erbium-doped fiber amplifiers (EDFAs) for harsh environments require to develop specific fabrication methods of Er (3+)-doped fibers (EDFs) so as to limit the impact of radiation-induced absorption. In this context, a compromise has to be found between the concentration of Erbium and the glass composition. On the one hand, high concentration of Er (3+) ions helps to reduce the length of the EDF and hence the cumulated attenuation but generally leads to luminescence quenching mechanisms that limit the performances...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28324802/pelvic-exenteration-case-series-a-single-surgeon-s-experience-at-one-institution-in-trinidad-and-tobago
#2
Ravi Maharaj, Vandana Devika Sookdeo, Maurice Fortuné, Meenakshi Akhilesh, Chalapathi Rao Adidam Venkata, Wayne Mohammed, Dave Harnanan, Wayne A Warner
INTRODUCTION: Pelvic exenteration (PE) is an ultra-radical surgical procedure characterized by the en bloc resection of the pelvic organs. METHODS: In this case series, we report retrospectively on four patients who underwent PE in Trinidad and Tobago from 2012 to 2016. One male patient had rectal cancer while one each of three women had cervical, colon, or rectal cancer. RESULTS: Early postoperative complications (≤30days) occurred in all patients, while late complications (>30days) occurred in one patient (Grade 1 - Clavien-Dindo classification)...
March 7, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28324783/recent-updates-of-carbapenem-antibiotics
#3
REVIEW
Mohammed I El-Gamal, Imen Brahim, Noorhan Hisham, Rand Aladdin, Haneen Mohammed, Amany Bahaaeldin
Carbapenems are among the most commonly used and the most efficient antibiotics since they are relatively resistant to hydrolysis by most β-lactamases, they target penicillin-binding proteins, and generally have broad-spectrum antibacterial effect. In this review, we described the initial discovery and development of carbapenems, chemical characteristics, in vitro/in vivo activities, resistance studies, and clinical investigations for traditional carbapenem antibiotics in the market; imipenem-cilastatin, meropenem, ertapenem, doripenem, biapenem, panipenem/betamipron in addition to newer carbapenems such as razupenem, tebipenem, tomopenem, and sanfetrinem...
March 16, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28324037/autotaxin-is-regulated-by-glucose-and-insulin-in-adipocytes
#4
Kenneth D'Souza, Daniel A Kane, Mohamed Touaibia, Erin E Kershaw, Thomas Pulinilkunnil, Petra C Kienesberger
Autotaxin (ATX) is an adipokine that generates the bioactive lipid, lysophosphatidic acid. Despite recent studies implicating adipose-derived ATX in metabolic disorders including obesity and insulin resistance, the nutritional and hormonal regulation of ATX in adipocytes remains unclear. The present study examined the regulation of ATX in adipocytes by glucose and insulin and the role of ATX in adipocyte metabolism. Induction of insulin resistance in adipocytes with high glucose and insulin concentrations increased ATX secretion, whereas co-incubation with the insulin sensitizer, rosiglitazone, prevented this response...
January 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323991/whole-body-vibration-mimics-the-metabolic-effects-of-exercise-in-male-leptin-receptor-deficient-mice
#5
Meghan E McGee-Lawrence, Karl H Wenger, Sudipta Misra, Catherine L Davis, Norman K Pollock, Mohammed Elsalanty, Kehong Ding, Carlos M Isales, Mark W Hamrick, Joanna R Erion, Marlena Wosiski-Kuhn, Phonepasong Arounleut, Mark P Mattson, Roy G Cutler, Jack C Yu, Alexis M Stranahan
Whole-body vibration has gained attention as a potential exercise mimetic, but direct comparisons with the metabolic effects of exercise are scarce. To determine whether whole-body vibration recapitulates the metabolic and osteogenic effects of physical activity, we exposed male wildtype (Wt) and leptin receptor deficient (db/db) mice to daily treadmill exercise or whole-body vibration for three months. Body weights were analyzed and compared with Wt and db/db mice that remained sedentary. Glucose and insulin tolerance testing revealed comparable attenuation of hyperglycemia and insulin resistance in db/db mice following treadmill exercise or whole-body vibration...
March 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323882/mir-181-interacts-with-signaling-adaptor-molecule-denn-madd-and-enhances-tnf-induced-cell-death
#6
Samira Ghorbani, Farideh Talebi, Sedigheh Ghasemi, Ali Jahanbazi Jahan Abad, Mohammed Vojgani, Farshid Noorbakhsh
MicroRNAs are small noncoding RNAs, which regulate the expression of protein coding transcripts through mRNA degradation or translational inhibition. Numerous reports have highlighted the role of miRNAs in regulating cell death pathways including the expression of genes involved in the induction of apoptosis. Tumor necrosis factor alpha (TNF-α) is a proinflammatory cytokine which can send pro-death signals through its receptor TNFR1. Diverse adaptor molecules including DENN/MADD adaptor protein have been shown to modulate TNF-α pro-death signaling via recruitment of MAP kinases to TNFR1 and activation of pro-survival NFκB signaling...
2017: PloS One
https://www.readbyqxmd.com/read/28323833/lactate-dehydrogenase-in-toxoplasma-gondii-controls-virulence-bradyzoite-differentiation-and-chronic-infection
#7
Abdelbaset E Abdelbaset, Barbara A Fox, Mohamed H Karram, Mahmoud R Abd Ellah, David J Bzik, Makoto Igarashi
In the asexual stages, Toxoplasma gondii stage converts between acute phase rapidly replicating tachyzoites and chronic phase slowly dividing bradyzoites. Correspondingly, T. gondii differentially expresses two distinct genes and isoforms of the lactate dehydrogenase enzyme, expressing LDH1 exclusively in the tachyzoite stage and LDH2 preferentially in the bradyzoite stage. LDH catalyzes the interconversion of pyruvate and lactate in anaerobic growth conditions and is utilized for energy supply, however, the precise role of LDH1 and LDH2 in parasite biology in the asexual stages is still unclear...
2017: PloS One
https://www.readbyqxmd.com/read/28323738/an-extremely-rare-complication-of-tattoos
#8
Yazan Abdeen, Mohammed Al-Janabi, Moh'd Al-Halawani
No abstract text is available yet for this article.
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28323671/codeine-and-opioid-metabolism-implications-and-alternatives-for-pediatric-pain-management
#9
Vidya Chidambaran, Senthilkumar Sadhasivam, Mohamed Mahmoud
PURPOSE OF REVIEW: Use of perioperative opioids for surgical pain management of children presents clinical challenges because of concerns of serious adverse effects including life-threatening respiratory depression. This is especially true for children with history of obstructive sleep apnea. This review will explore current knowledge of clinically relevant factors and genetic polymorphisms that affect opioid metabolism and postoperative outcomes in children. RECENT FINDINGS: Within the past several years, an increasing number of case reports have illustrated clinically important respiratory depression, anoxic brain injuries and even death among children receiving appropriate weight-based dosages of codeine and other opioids for analgesia at home setting particularly following tonsillectomy...
March 18, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28323462/scaling-up-a-water-sanitation-and-hygiene-program-in-rural-bangladesh-the-role-of-program-implementation
#10
Jade Benjamin-Chung, Sonia Sultana, Amal K Halder, Mohammed Ali Ahsan, Benjamin F Arnold, Alan E Hubbard, Leanne Unicomb, Stephen P Luby, John M Colford
OBJECTIVES: To evaluate whether the quality of implementation of a water, sanitation, and hygiene program called SHEWA-B and delivered by UNICEF to 20 million people in rural Bangladesh was associated with health behaviors and sanitation infrastructure access. METHODS: We surveyed 33 027 households targeted by SHEWA-B and 1110 SHEWA-B hygiene promoters in 2011 and 2012. We developed an implementation quality index and compared the probability of health behaviors and sanitation infrastructure access in counterfactual scenarios over the range of implementation quality...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28320105/anti-fibrotic-potential-of-human-umbilical-cord-mononuclear-cells-and-mouse-bone-marrow-cells-in-ccl4-induced-liver-fibrosis-in-mice
#11
Nageh Ahmed Elmahdy, Samia Salem Sokar, Mohamed Labib Salem, Naglaa Ibrahim Sarhan, Sherin Hamed Abou-Elela
Liver fibrosis is the consequence of hepatocyte injury that leads to the activation of hepatic stellate cells (HSC). The treatment of choice is Liver transplantation; however, it has many problems such as surgery-related complications, immunological rejection and high costs associated with the procedure. Stem cell-based therapy would be a potential alternative, so the aim of this study is to investigate the therapeutic potential of human umbilical cord mononuclear cells (MNC) and mouse bone marrow cells (BMC) against carbon tetrachloride (CCl4) induced liver fibrosis in mice and compare it with that of silymarin...
March 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28320086/antifibrotic-effect-of-diethylcarbamazine-combined-with-hesperidin-against-ethanol-induced-liver-fibrosis-in-rats
#12
Alaa El-Din El-Sayed El-Sisi, Samia Salim Sokar, Abdelhadi Mohamed Shebl, Dina Zakaria Mohamed
Chronic alcohol consumption leads to extracellular matrix hyperplasia and liver fibrosis with a great role of hepatic stellate cell (HSC) activation in this process. The present study was designed to investigate the possible protective effects of diethylcarbamazine (DEC) (50mg/kg, acting as an anti-inflammatory drug, interferes with the arachidonic acid metabolism) when administrated in combination with hesperidin (HDN) (200mg/kg, a flavanone glycoside with potent antioxidant and anti-inflammatory activities) against alcoholic liver fibrosis in wistar rats compared to silymarin (Sil) (100mg/kg)...
March 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28320068/thoracic-electrical-bioimpedance-versus-suprasternal-doppler-in-emergency-care
#13
Mohammed H Elwan, Jeremy Hue, Samira J Green, Salah M Eltahan, Mark R Sims, Timothy J Coats
OBJECTIVE: There are a number of cardiac output (CO) monitors that could potentially be used in the ED. Two of the most promising methods, thoracic electrical bioimpedance and suprasternal Doppler, have not been directly compared. The aim of this study was to investigate the feasibility of CO monitoring using suprasternal Doppler and bioimpedance in emergency care and compare haemodynamic data obtained from both monitors. METHODS: Haemodynamic measurements were made on the same group of patients using bioimpedance (Niccomo, Medis, Germany) and suprasternal Doppler (USCOM, Sydney, Australia)...
March 20, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28320044/multiple-concomitant-oral-cavity-cancers-incidence-management-and-outcomes
#14
Huang-Kai Kao, Mohamed Abdelrahman, Yenlin Huang, Chia-Hsuan Tsai, Megias J Barrera, Ngan-Ming Tsang, Adam J Couves, Ming-Huei Cheng, Kai-Ping Chang
BACKGROUND: Little is known about the appropriate treatment and long-term survival of patients with multiple concomitant oral cavity cancers (MOC). The aim of this study was to clarify the clinicopathological features of MOC, to compare the prognosis of MOC patients with that of patients with single oral cavity cancers (SOC), and to describe reconstructive options based on the concept of economy in autologous tissue transfer. METHODS: Data from 603 patients diagnosed with at least one squamous cell carcinoma of the oral cavity who underwent surgery for primary oral cavity cancers between 2006 and 2014 were reviewed retrospectively to identify MOC patients...
March 20, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28319658/moisture-mediated-interactions-between-amorphous-maltodextrins-and-crystalline-fructose
#15
Alpana Thorat, Krystin N Marrs, Mohamed K Ghorab, Vincent Meunier, Laurent Forny, Lynne S Taylor, Lisa J Mauer
The effects of coformulating amorphous maltodextrins (MDs) and crystalline fructose, a deliquescent solid, on the moisture sorption, deliquescence point (RH0 ), and glass transition temperature (Tg ) behaviors were determined. Moisture sorption profiles of binary fructose:MD mixtures and individual ingredients were generated using controlled relative humidity (RH) desiccators and by dynamic vapor sorption techniques. Blends exhibited synergistic moisture uptake at RHs below the RH0 of fructose, attributed to partial dissolution of fructose in plasticized MD matrices without a significant reduction in the RH0 of the undissolved fructose...
March 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28319208/posterior-mandibular-ridge-resorption-associated-with-different-retentive-systems-for-overdentures-a-7-year-retrospective-preliminary-study
#16
Moustafa Abdou Elsyad, Shahinaz Sayed Mohamed, Ahmad Fathalla Shawky
PURPOSE: This retrospective study compared posterior mandibular residual ridge resorption with two different retentive mechanisms for overdentures after 7 years. MATERIALS AND METHODS: A convenience sample of 18 edentulous men was assigned to one of two equal groups. Two implants were placed in the mandibular canine areas for each patient using the conventional two-stage surgical protocol, and the implants were splinted with a round bar 3 months later. New mandibular overdentures were then connected to the bars with clips (clip-retained overdentures, CR group) or resilient liners (resilient liner-retained overdentures, RR group)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319148/the-incremental-benefit-of-eus-for-identifying-unresectable-disease-among-adults-with-pancreatic-adenocarcinoma-a-meta-analysis
#17
Paul D James, Zhao Wu Meng, Mei Zhang, Paul J Belletrutti, Rachid Mohamed, William Ghali, Derek J Roberts, Guillaume Martel, Steven J Heitman
BACKGROUND AND STUDY AIMS: It is unclear to what extent EUS influences the surgical management of patients with pancreatic adenocarcinoma. This systematic review sought to determine if EUS evaluation improves the identification of unresectable disease among adults with pancreatic adenocarcinoma. PATIENTS AND METHODS: We searched MEDLINE, EMBASE, bibliographies of included articles and conference proceedings for studies reporting original data regarding surgical management and/or survival among patients with pancreatic adenocarcinoma, from inception to January 7th 2017...
2017: PloS One
https://www.readbyqxmd.com/read/28318894/synthesis-and-human-bacterial-carbonic-anhydrase-inhibition-with-a-series-of-sulfonamides-incorporating-phthalimido-moieties
#18
Menshawy A Mohamed, Alaa A-M Abdel-Aziz, Helmy M Sakr, Adel S El-Azab, Silvia Bua, Claudiu T Supuran
A series of sulfonamides was obtained by reacting substituted-2-(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxamido)benzoic acids with aromatic sulfonamides incorporating primary amino moieties. The new compounds were investigated as inhibitor of four carbonic anhydrase (CA, EC 4.2.1.1) isoforms, the human (h) hCA I and II, and the α- and β-class CAs from the pathogenic bacterium Vibrio cholerae, VchCAα and VhcCAβ. hCA I was effectively inhibited by the new sulfonamides, with inhibition constants in the range of 4...
March 9, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28318772/-nodular-tumor-of-the-scalp-case-for-diagnosis
#19
Mariem Mohamed, Mehdi Karray, Rim Hadhri, Hichem Belhadjali, Jameleddine Zili
No abstract text is available yet for this article.
March 16, 2017: Annales de Pathologie
https://www.readbyqxmd.com/read/28318640/the-prevalence-of-diabetic-retinopathy-in-australian-adults-with-self-reported-diabetes-the-national-eye-health-survey
#20
Stuart Keel, Jing Xie, Joshua Foreman, Peter van Wijngaarden, Hugh R Taylor, Mohamed Dirani
PURPOSE: To determine the prevalence of and factors associated with diabetic retinopathy (DR) among non-Indigenous and Indigenous Australian adults with self-reported diabetes. DESIGN: Population-based cross-sectional study. PARTICIPANTS: Non-Indigenous Australians (50-98 years of age) and Indigenous Australians (40-92 years of age) with known diabetes. METHODS: Diabetes was determined based on self-report of previous diagnosis of the disease...
March 15, 2017: Ophthalmology
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