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https://www.readbyqxmd.com/read/29232802/-sarcomatoid-urothelial-carcinoma-of-the-bladder-including-an-osteosarcoma-element
#1
Kouzaburou Tanuma, Koji Kawai, Haruki Tsuchiya, Yoshitaka Matsumoto, Shuya Kandori, Takahiro Kojima, Tomokazu Kimura, Akira Joraku, Jun Miyazaki, Hiroyuki Nishiyama, Akiko Sakata
A 68-year-old Japanese man was referred to Tsukuba University Hospital for bladder cancer treatment. He had undergone a transurethral resection of a bladder tumor (TURBT) at a local hospital, but the pathological specimen did not contain muscle layer. Abdominal computed tomography (CT) and magnetic resonance imaging revealed a 3 cm non-papillary bladder tumor with muscle invasion, but there was no apparent calcification. The patient underwent re-TURBT at our hospital for diagnosis and staging. A non-papillary pedunculated tumor was identified in the bladder dome, and it contained a small papillary part...
November 2017: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29232659/phytosphingosine-prevents-the-formation-of-young-salivary-biofilms-in-vitro
#2
Floris J Bikker, Michel A Hoogenkamp, Amine Malhaoui, Kamran Nazmi, Jessica Neilands, Bastiaan P Krom
Dental biofilms are formed in a multistep process that is initiated by the adhesion of oral bacteria to the dental hard surface. As dental biofilms are associated with oral diseases their control is necessary in order to maintain oral health. Recently, it was revealed that phytosphingosine (PHS)-treated hydroxyapatite discs showed anti-adhesive activity in a static in vitro biofilm model against Streptococcus mutans. The goal of the present study was to further unravel the anti-adhesive and anti-biofilm properties of PHS in both static and dynamic in vitro biofilm models against a full salivary inoculum...
December 13, 2017: Caries Research
https://www.readbyqxmd.com/read/29232591/impact-of-time-on-ultrasonic-cavitation-peening-via-detection-of-surface-plastic-deformation
#3
Fushi Bai, Kai-Alexander Saalbach, Liang Wang, Xiaogeng Wang, Jens Twiefel
During ultrasonic cavitation peening, bubbles repeatedly form and collapse, which leads to high impact loads on the treated surface. At the initial stage of ultrasonic cavitation peening, the most obvious change is plastic deformation instead of mass loss on the treated specimen surface. Meanwhile the plastic deformation is beneficial for mechanical surface properties. As the cavitation exposure time increases, erosion and damage are inflicted on the metal surface due to the increase in the number of collapse events...
December 5, 2017: Ultrasonics
https://www.readbyqxmd.com/read/29232547/aml-therapy-wake-up-the-guardian-and-cut-loose-the-executioners
#4
Dario C Altieri
In this issue of Cancer Cell, Pan et al. show that a combination therapy designed to reactivate the p53 tumor suppressor while antagonizing the anti-apoptotic function of Bcl-2 is highly active in preclinical models of refractory acute myeloid leukemia (AML). The results may move the needle in this hard-to-treat malignancy.
December 11, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29232337/retinal-telangiectasia-in-patients-with-pathologic-myopia-a-case-series
#5
Boya Lei, Ruiping Gu, Chen Jiang, Gezhi Xu
PURPOSE: To describe the characteristics of retinal telangiectasia in eyes with pathologic myopia. METHODS: The study included 10 patients (18 eyes) who were diagnosed with pathologic myopia combined with retinal telangiectasia. The patients visited our retinal clinic every 3 months. Nine eyes underwent vitrectomy for vision-threatening complications after diagnosis. All eyes underwent comprehensive ophthalmologic examinations including multimodal retinal imaging at presentation and at each follow-up...
December 8, 2017: Retina
https://www.readbyqxmd.com/read/29232126/alkali-and-alkaline-earth-metal-derivatives-of-disila-bridged-podands-coordination-chemistry-and-structural-diversity
#6
Fabian Dankert, Carsten Donsbach, Christopher-Nils Mais, Kirsten Reuter, Carsten von Hänisch
Within this study, the synthesis and coordination chemistry of open-chain ligands bearing disila-units is presented. Instead of basic 1:1 complexes, structural diversity was discovered in the variety of ligand and salt. Stable complexes of alkali and alkaline earth metal complexes were obtained by equimolar reactions of different salts with the disila-bridged podands 8,9-disila-EO5 (1) and 11,12-disila-EO7 (2) (EO5 = pentaethylene glycol; EO7 = heptaethylene glycol). The respective alkaline earth metal complexes of the type [Ca(8,9-disila-EO5)(OTf)2] (3), [Sr(8,9-disila-EO5)I2] (5), [Sr(11,12-disila-EO7)I]I (6), and [Ba(11,12-disila-EO7)OTf2] (7) (OTf = CF3SO3-) were characterized via single-crystal X-ray diffraction analyses...
December 12, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29232122/negative-zero-field-cooled-magnetization-in-ymn0-5cr0-5o3-due-to-giant-coercivity-and-trapped-field
#7
Xiangnan Xie, Hailiang Che, Haoru Wang, Guankai Lin, Hong Zhu
We report an intensive study on negative magnetization under zero-field-cooled (ZFC) mode in YMn0.5Cr0.5O3 polycrystalline samples. It has been found that the magnetization reversal in ZFC measurements is strongly related to a giant coercivity of the oxide. The giant coercivity may result from the cooperative effect of magnetocrystalline anisotropy and the Dzyaloshinsky-Moriya interaction, especially at temperatures below 10 K. By fitting the high-temperature paramagnetic data under nominal zero field, the value of the trapped field in a superconducting magnet has been derived to be around several Oe, which further demonstrates that the negative ZFC magnetization is an artifact caused by negative trapped field in combination with the giant coercivity...
December 12, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29231939/a-first-principles-study-of-the-structural-mechanical-and-electronic-properties-of-precipitates-of-al2cu-in-al-cu-alloys
#8
Y F Ouyang, H M Chen, X M Tao, F Gao, Q Peng, Y Du
The properties of precipitates are important in understanding the strengthening mechanism via precipitation during heat treatment and the aging process in Al-Cu based alloys, where the formation of precipitates is sensitive to temperature and pressure. Here we report a first-principles investigation of the effect of temperature and pressure on the structural stability, elastic constants and formation free energy for precipitates of Al2Cu, as well as their mechanical properties. Based on the formation enthalpy of Guinier-Preston (GP(I)) zones, the size of the GP(I) zone is predicted to be about 1...
December 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29231729/simulation-of-calcium-phosphate-species-in-aqueous-solution-force-field-derivation
#9
Raffaella Demichelis, Natalya A Garcia, Paolo Raiteri, Riccardo Innocenti Malini, Colin L Freeman, John H Harding, Julian D Gale
A new force field has been derived for the aqueous calcium phosphate system that aims to reproduce the key thermodynamic properties of the system, including free energies of hydration of the ions and the solubility of the solid mineral phases. Interactions of three phosphate anions (PO 3-, HPO 2- and H PO -) with water were calibrated through comparison with the results 4424 obtained from ab initio molecular dynamics using both GGA and hybrid density functional theory with dispersion corrections. In the solid state, the force field has been evaluated by benchmarking against experiment and other existing models and is shown to reproduce the structural and mechanical properties well, despite the primary focus being on thermodynamics...
December 12, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29231706/sodium-rich-ferric-pyrophosphate-cathode-for-stationary-room-temperature-sodium-ion-batteries
#10
Bolei Shen, Maowen Xu, Yubin Niu, Jin Han, Shi-Yu Lu, Jian Jiang, Yi Li, Chunlong Dai, Linyu Hu, Chang Ming Li
In this paper, carbon-coated Na3.64Fe2.18(P2O7)2 nanoparticles (~10 nm) were successfully synthesized via a facile sol-gel method and employed as cathode materials for sodium-ion batteries. The results show that the carbon-coated Na3.64Fe2.18(P2O7)2 cathode delivers a high reversible capacity of 99 mAhg-1 at 0.2 C, outstanding cycling life retention of 96 % and high coulomb efficiency of almost 100 % even after 1000 cycles at 10 C. Furthermore, the electrochemical performances of full batteries consisting of the carbon-coated Na3...
December 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29230977/scleral-buckling-using-a-non-contact-wide-angle-viewing-system-with-a-25-gauge-chandelier-endoilluminator
#11
Jaehyuck Jo, Byung Gil Moon, Joo Yong Lee
PURPOSE: To report the outcome of scleral buckling using a non-contact wide-angle viewing system with a 25-gauge chandelier endoilluminator. METHODS: Retrospective analyses of medical records were performed for 17 eyes of 16 patients with primary rhegmatogenous retinal detachment (RRD) without proliferative vitreoretinopathy who had undergone conventional scleral buckling with cryoretinopexy using the combination of a non-contact wide-angle viewing system and chandelier endoillumination...
December 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/29230946/direct-hplc-separation-of-carnosine-enantiomers-with-two-chiral-stationaryn-phases-based-on-penicillamine-and-teicoplanin-derivatives
#12
Laura Fumagalli, Lucia Pucciarini, Luca Regazzoni, Ettore Gilardoni, Marina Carini, Giulio Vistoli, Giancarlo Aldini, Roccardo Sardella
Carnosine is present in high concentrations in specific human tissues such as the skeletal muscle, and among its biological functions, the remarkable scavenging activity towards reactive carbonyl species is noteworthy. Although the two enantiomers show almost identical scavenging reactivity towards reactive carbonyl species, only d-carnosine is poorly adsorbed at the gastrointestinal level and is stable in human plasma. Direct methods for the enantioselective analysis of carnosine are still missing even though they could find more effective applications in the analysis of complex matrices...
December 12, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29230942/visualization-of-heterogeneous-oxygen-storage-behavior-in-three-way-catalyst-pt-ce2zr2ox-particles-by-hard-x-ray-spectro-ptychography
#13
Makoto Hirose, Nozomu Ishiguro, Kei Shimomura, Nicolas Burdet, Hirosuke Matsui, Mizuki Tada, Yukio Takahashi
The cerium density and valence in micrometer-size Pt/Ce2Zr2Ox (x=7-8) three-way catalyst particles were successfully mapped by hard X-ray spectro-ptychography (ptychographic-XAFS). The analysis of correlation between the Ce density and valence in ptychographic-XAFS images suggested the existence of several oxidation behaviors in the oxygen storage process in the Ce2Zr2Ox particles. Ptychographic-XAFS will open up the nanoscale chemical imaging and structural analysis of heterogeneous catalysts.
December 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29230904/impacts-of-climate-change-on-rice-production-in-africa-and-causes-of-simulated-yield-changes
#14
Pepijn A J van Oort, Sander J Zwart
This study is the first of its kind to quantify possible effects of climate change on rice production in Africa. We simulated impacts on rice in irrigated systems (dry season and wet season) and rainfed systems (upland and lowland). We simulated the use of rice varieties with a higher temperature sum as adaptation option. We simulated rice yields for 4 RCP climate change scenarios and identified causes of yield declines. Without adaptation, shortening of the growing period due to higher temperatures had a negative impact on yields (-24% in RCP 8...
December 12, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29230577/long-term-adaptation-of-escherichia-coli-to-methanogenic-co-culture-enhanced-succinate-production-from-crude-glycerol
#15
Nam Yeun Kim, Su Nyung Kim, Ok Bin Kim
Escherichia coli can hardly grow anaerobically on glycerol without exogenous electron acceptor. The formate-consuming methanogen Methanobacterium formicicum plays a role as a living electron acceptor in glycerol fermentation of E. coli. Wild-type and mutant E. coli strains were screened for succinate production using glycerol in a co-culture with M. formicicum. Subsequently, E. coli was adapted to glycerol fermentation over 39 rounds (273 days) by successive co-culture with M. formicicum. The adapted E. coli (19...
December 12, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29230516/-the-distribution-of-cardiovascular-risk-factors-in-employees-from-small-and-medium-sized-enterprises-in-germany
#16
Andrea Kaifie, Thomas Kraus
BACKGROUND: The German Prevention Act, the main parts of which came into force on 25 July 2015, encourages health promotion and prevention programs for people in their living environment. Through this act, preventive measures could reach employees at work that hardly seek medical services. This is of importance since employees with a low occupational position often show risk factors that increase morbidity and mortality. METHODS: In this study, clinical data from n = 2280 employees from small and medium sized enterprises (SME) were analyzed for economic sector, sex, socioeconomic position (SEP), economic sector cardiovascular risk factors, musculoskeletal and psychological diseases...
December 11, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/29230387/hyperpigmentation-of-the-hard-palate-mucosa-in-a-patient-with-chronic-myeloid-leukaemia-taking-imatinib
#17
Gian Paolo Bombeccari, Umberto Garagiola, Francesco Pallotti, Margherita Rossi, Massimo Porrini, Aldo Bruno Giannì, Francesco Spadari
Background: Imatinib mesylate is an inhibitor of the tyrosine kinase Bcr-Abl and a first-line treatment for Philadelphia chromosome-positive chronic myeloid leukaemia (CML). Dermatological side effects include superficial oedema, pustular eruption, lichenoid reactions, erythroderma, and skin rash. Depigmentation of the skin and/or mucosa is uncommon, and hyperpigmentation is rare. Case presentation: We present the case of a 63-year-old Caucasian male with widespread hyperpigmentation of the hard palate associated with a 9-year history of imatinib therapy to treat CML...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29230266/-shoulder-tumor-of-startling-appearance
#18
Ilhame Naciri, Baderddine Hassam
Chondrosarcoma is a malignant tumor of bone of mesenchymal origin which usually occurs in people after age 40 at the level of the pelvis and the shoulder. We report the case of a 65-year old female patient, with no particular past medical history, with impaired general condition, hospitalized for exploration of a large tumor of the right shoulder, evolving over 3 years. Clinical examination showed giant, humpbacked, hard, adherent tumor measuring 44 × 32 cm along its longer axis, with inflammatory signs associated with signs of vasculo-nervous compression...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29229939/synaesthesia-type-associations-and-perceptual-changes-induced-by-hypnotic-suggestion
#19
Sakari Kallio, Mika Koivisto, Johanna K Kaakinen
Are synaesthetic experiences congenital and so hard-wired, or can a functional analogue be created? We induced an equivalent of form-colour synaesthesia using hypnotic suggestions in which symbols in an array (circles, crosses, squares) were suggested always to have a certain colour. In a Stroop type-naming task, three of the four highly hypnotizable participants showed a strong synaesthesia-type association between symbol and colour. This was verified both by their subjective reports and objective eye-movement behaviour...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29229402/full-field-strain-distribution-in-multi-vertebra-spine-segments-an-in-vitro-application-of-digital-image-correlation
#20
Marco Palanca, Miguel Marco, Maria Luisa Ruspi, Luca Cristofolini
The biomechanics of the spine is experimentally assessed in terms of range of motion and overall stiffness. Quantification of the surface strain distribution is currently limited either to the vertebrae or the discs, whereas a full-field approach to measure the strain distribution in a multi-vertebra segment is currently missing. The aim of this work was to explore the feasibility of using Digital Image Correlation (DIC) to measure the strain distribution simultaneously on the vertebral bodies and the intervertebral discs of spine segments in different loading configurations...
December 8, 2017: Medical Engineering & Physics
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