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https://www.readbyqxmd.com/read/28821194/primary-benign-and-malignant-thyroid-neoplasms-with-signet-ring-cells-cytologic-histologic-and-molecular-features
#1
Nada A Farhat, Ayse M Onenerk, Jeffrey F Krane, Dora Dias-Santagata, Peter M Sadow, William C Faquin
Objectives: Signet ring cells (SRCs) can be seen in a variety of thyroid tumors and can pose a diagnostic pitfall on cytology. This study describes the cytologic, histomorphologic, and molecular aspects of a cohort of primary thyroid tumors with SRCs. Methods: A search was performed of the Massachusetts General Hospital and Brigham and Women's Hospital (Boston, MA) pathology archives for the keywords thyroid, signet, and signet ring features between 2000 and 2014...
September 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28821149/solution-blow-spun-nanocomposites-of-poly-lactic-acid-cellulose-nanocrystals-from-eucalyptus-kraft-pulp
#2
Delne Domingos da Silva Parize, Juliano Elvis de Oliveira, Tina Williams, Delilah Wood, Roberto de Jesús Avena-Bustillos, Artur Piotr Klamczynski, Gregory Melvin Glenn, José Manoel Marconcini, Luiz Henrique Capparelli Mattoso
Cellulose nanocrystals (CNCs) were extracted from Eucalyptus kraft pulp by sulfuric acid hydrolysis, and esterified with maleic anhydride (CNCMA). The incorporation of sulfate ester groups on the cellulose surface resulted in higher stability of the nanoparticles in aqueous suspensions and lower thermal stability. Then, PLA/CNC and PLA/CNCMA nanocomposites were successfully obtained by solution blow spinning (SBS) using dimethyl carbonate (DMC) as solvent. CNC and CNCMA indicated to be acting both as nucleating agents or growth inhibitors of PLA crystal and tends to favor the formation of PLA crystals of higher stability...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821092/the-effect-of-temperature-on-the-colligative-properties-of-food-grade-konjac-gum-in-water-solutions
#3
Joanna Kruk, Kacper Kaczmarczyk, Anna Ptaszek, Urszula Goik, Paweł Ptaszek
This research paper presents the results of tests on the colligative properties of konjac gum chains in water solutions. For this purpose, the measurements of osmotic pressure and intrinsic viscosity of aqueous solutions, in the function of konjac gum concentration and temperature were carried out. The applied methods allowed for the determination of the second osmotic virial coefficients B2, which raised with the increase of temperature. It indicate that increase of temperature causes higher affinity of polysaccharide's chains to water...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820877/drug-development-locking-down-metabolism
#4
William R Bishai
No abstract text is available yet for this article.
August 18, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28820859/-it-s-not-an-obvious-issue-is-it-office-based-employees-perceptions-of-prolonged-sitting-at-work-a-qualitative-study
#5
Stuart William Flint, Helen Crank, Garry Tew, Simon Till
OBJECTIVE: Current UK workplace health promotion guidance recommends that employers minimize sedentary behaviors, but understanding the issues relating to prolonged workplace sitting has received little empirical attention. This study aimed to explore employees' perceptions of sitting time. METHODS: Participants at a small to medium-sized UK company were invited to join one of five focus groups. A framework analysis approach was used. RESULTS: Self-reported mean estimate of occupational sitting time was 6...
August 17, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28820853/reply
#6
Ilkay Kilic Muftuoglu, Mostafa Alam, Qi Sheng You, Raouf Gaber, Hema L Ramkumar, Nadia Mendoza, Amit Meshi, William R Freeman
No abstract text is available yet for this article.
August 16, 2017: Retina
https://www.readbyqxmd.com/read/28820759/thromboprophylaxis-in-spinal-surgery
#7
William P Mosenthal, David C Landy, Haroutioun H Boyajian, Olumuyiwa A Idowu, Lewis L Shi, Edwin Ramos, Michael J Lee
STUDY DESIGN: Systematic review and meta-analysis OBJECTIVE.: Determine the incidence of deep vein thrombosis (DVT) and pulmonary embolism (PE) in spinal surgery patients receiving no thromboprophylaxis, mechanoprophylaxis, and chemoprophylaxis. SUMMARY OF BACKGROUND DATA: The incidence of thromboembolic complications after spinal surgery is not well established. While a variety of effective mechanical and chemical thromboprophylaxis interventions exist, their role in spinal surgery remains unclear...
August 17, 2017: Spine
https://www.readbyqxmd.com/read/28820754/sleep-apps-what-role-do-they-play-in-clinical-medicine
#8
Christopher P Lorenz, Adrian J Williams
PURPOSE OF REVIEW: Today's smartphones boast more computing power than the Apollo Guidance Computer. Given the ubiquity and popularity of smartphones, are we already carrying around miniaturized sleep labs in our pockets? RECENT FINDINGS: There is still a lack of validation studies for consumer sleep technologies in general and apps for monitoring sleep in particular. To overcome this gap, multidisciplinary teams are needed that focus on feasibility work at the intersection of software engineering, data science and clinical sleep medicine...
August 17, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28820722/house-structure-is-associated-with-plasmodium-falciparum-infection-in-a-low-transmission-setting-in-southern-zambia
#9
Matthew M Ippolito, Kelly M Searle, Harry Hamapumbu, Timothy M Shields, Jennifer C Stevenson, Philip E Thuma, William J Moss, For The Southern Africa International Center Of Excellence For Malaria Research
House structure may influence the risk of malaria by affecting mosquito entry and indoor resting. Identification of construction features associated with protective benefits could inform vector control approaches, even in low-transmission settings. We examined the association between house structure and malaria prevalence in a cross-sectional analysis of 2,788 children and adults residing in 866 houses in a low-transmission area of Southern Province, Zambia, over the period 2008-2012. Houses were categorized according to wall (brick/cement block or mud/grass) and roof (metal or grass) material...
August 7, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820585/chemo-enzymatic-assembly-of-isotopically-labeled-folates
#10
Antonio Angelastro, William Michael Dawson, Louis Y P Luk, E Joel Loveridge, Rudolf K Allemann
Pterin-containing natural products have diverse functions in life but an efficient and easy scheme for their in vitro synthesis is not available. Here, we report a chemo-enzymatic 14-step, one-pot synthesis that can be used to generate 13C- and 15N-labeled dihydrofolates (H2F) from glucose, guanine and p-aminobenzoyl-L-glutamic acid. This synthesis stands out from previous approaches to produce H2F in that the average yield of each step is >91% and it requires only one single purification step. The use of a one-pot reaction allowed us to overcome potential problems with individual steps during the synthesis...
August 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28820544/use-of-adjuncts-reduces-cardiopulmonary-bypass-time-during-minimally-invasive-aortic-valve-replacement
#11
Alice Wang, Sharon L McCartney, Judson B Williams, Asvin Ganapathi, Donald D Glower, Alina Nicoara, Jeffrey G Gaca
BACKGROUND: Minimally invasive aortic valve replacement (MIAVR) through a mini-thoracotomy is comparable to AVR through a sternotomy, but may have increased surgical times. The development of adjuncts such as the automatic knot fastener and percutaneous coronary sinus (CS) catheter may reduce this disadvantage. METHODS: A retrospective review conducted between 2002 and 2015 at a single institution revealed 78 patients who underwent MIAVR with adjuncts. The automatic knot fastener was used on all patients, and a successful CS catheter was placed and confirmed by echocardiography in 67 patients (86%)...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28820535/7-step-total-synthesis-of-ebc-329-photoisomerisation-reveals-new-seco-casbane-family-member
#12
Timothy J Vanden Berg, David M Pinkerton, Craig M Williams
The first seco-casbane, EBC-329, isolated from the Australian rainforest, was synthesised from (+)-2-carene in seven steps. This endeavour not only established the absolute stereochemical assignment as (8R,9S)-EBC-329, but also identified, via photoisomerisation, a new seco-casbane family member.
August 18, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28820451/dynamic-fuzzy-logic-based-path-planning-for-mobility-assisted-localization-in-wireless-sensor-networks
#13
Abdullah Alomari, William Phillips, Nauman Aslam, Frank Comeau
Mobile anchor path planning techniques have provided as an alternative option for node localization in wireless sensor networks (WSNs). In such context, path planning is a movement pattern where a mobile anchor node's movement is designed in order to achieve a maximum localization ratio possible with a minimum error rate. Typically, the mobility path planning is designed in advance, which is applicable when the mobile anchor has sufficient sources of energy and time. However, when the mobility movement is restricted or limited, a dynamic path planning design is needed...
August 18, 2017: Sensors
https://www.readbyqxmd.com/read/28820373/identification-of-clade-e-avipoxvirus-mozambique-2016
#14
Lourenço P Mapaco, Zeiss Lacerda, Iolanda V A Monjane, Esayas Gelaye, Afonso H Sussuro, Gerrit J Viljoen, William G Dundon, Sara J Achá
Analysis of scab samples collected from poultry during outbreaks of fowlpox in Mozambique in 2016 revealed the presence of clade E avipoxviruses. Infected poultry were from flocks that had been vaccinated against fowlpox virus. These findings require urgent reevaluation of the vaccine formula and control strategies in this country.
September 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28820301/translabyrinthine-microsurgical-resection-of-small-vestibular-schwannomas
#15
Marc S Schwartz, Gregory P Lekovic, Mia E Miller, William H Slattery, Eric P Wilkinson
OBJECTIVE Translabyrinthine resection is one of a number of treatment options available to patients with vestibular schwannomas. Though this procedure is hearing destructive, the authors have noted excellent clinical outcomes for patients with small tumors. The authors review their experience at a tertiary acoustic neuroma referral center in using the translabyrinthine approach to resect small vestibular schwannomas. All operations were performed by a surgical team consisting of a single neurosurgeon and 1 of 7 neurotologists...
August 18, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28820231/interventions-for-treating-persistent-pain-in-survivors-of-torture
#16
REVIEW
Emma Baird, Amanda C de C Williams, Leslie Hearn, Kirstine Amris
BACKGROUND: Persistent (chronic) pain is a frequent complaint in survivors of torture, particularly but not exclusively pain in the musculoskeletal system. Torture survivors may have no access to health care; where they do, they may not be recognised when they present, and the care available often falls short of their needs. There is a tendency in state and non-governmental organisations' services to focus on mental health, with poor understanding of persistent pain, while survivors may have many other legal, welfare, and social problems that take precedence over health care...
August 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28820208/positive-zeta-potential-of-nanodiamonds
#17
Laia Ginés, Soumen Mandal, Ashek-I-Ahmed, Chia-Liang Cheng, Maabur Sow, Oliver A Williams
In this paper, the origin of positive zeta potential exhibited by nanodiamond particles is explained. Positive zeta potentials in nano-structured carbons can be explained by the presence of graphitic planes at the surface, which leave oxygen-free Lewis sites and so promotes the suppression of acidic functional groups. Electron Microscopy and Raman Spectroscopy have been used to show that positive zeta potential of nanodiamond is only exhibited in the presence of sp(2) carbon at the surface.
August 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28820004/drug-induced-liver-injury-in-children-clinical-observations-animal-models-and-regulatory-status
#18
Qiang Shi, Xi Yang, James J Greenhaw, Alec Thomas Salminen, Gary M Russotti, William F Salminen
Drug-induced liver injury in children (cDILI) accounts for about 1% of all reported adverse drug reactions throughout all age groups, less than 10% of all clinical DILI cases, and around 20% of all acute liver failure cases in children. The overall DILI susceptibility in children has been assumed to be lower than in adults. Nevertheless, controversial evidence is emerging about children's sensitivity to DILI, with children's relative susceptibility to DILI appearing to be highly drug-specific. The culprit drugs in cDILI are similar but not identical to DILI in adults (aDILI)...
January 1, 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28819932/twice-daily-vs-once-daily-dosing-with-0-075-bromfenac-in-durasite-outcomes-from-a-14-day-phase-2-study
#19
William Trattler, Kamran Hosseini
INTRODUCTION: Bromfenac is a well-known topical ophthalmic nonsteroidal anti-inflammatory drug (NSAID) that is commercialized in the USA and other regions of the world. A new formulation, 0.075% bromfenac in DuraSite®, was developed to treat postoperative inflammation and reduce pain in patients who have undergone cataract surgery. We hypothesized that efficacy and safety would be enhanced with twice-daily (BID) dosing compared to once-daily (QD) dosing. METHODS: This was a multicenter, double-masked, comparative study in which 40 and 45 subjects were randomized to groups receiving BID dosing and QD dosing, respectively...
August 17, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28819908/the-effect-of-cationically-modified-phosphorylcholine-polymers-on-human-osteoblasts-in-vitro-and-their-effect-on-bone-formation-in-vivo
#20
Jonathan M Lawton, Mariam Habib, Bingkui Ma, Roger A Brooks, Serena M Best, Andrew L Lewis, Neil Rushton, William Bonfield
The effect of introducing cationic charge into phosphorylcholine (PC)-based polymers has been investigated in this study with a view to using these materials as coatings to improve bone formation and osseointegration at the bone-implant interface. PC-based polymers, which have been used in a variety of medical devices to improve biocompatibility, are associated with low protein adsorption resulting in reduced complement activation, inflammatory response and cell adhesion. However, in some applications, such as orthopaedics, good integration between the implant and bone is needed to allow the distribution of loading stresses and a bioactive response is required...
August 17, 2017: Journal of Materials Science. Materials in Medicine
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