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https://www.readbyqxmd.com/read/29779078/effects-of-elevated-pressure-on-pseudanabaena-galeata-b%C3%A3-cher-in-varying-light-and-dark-environments
#1
Helayaye Damitha Lakmali Abeynayaka, Takashi Asaeda, M Harun Rashid
To understand the effect of the hydrostatic pressure on Pseudanabaena galeata Böcher cells in both stratified and frequently mixed lakes, separate laboratory-scale models were developed. The pressure conditions in the stratified and mixed lakes were simulated in those models, and the variations of the cell and chlorophyll-a (Chl-a) concentration were analyzed. It was observed that an increase in pressure and darkness significantly reduced the cell concentration and pigmentation in P. galeata (p < 0...
May 19, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29778720/inflammatory-response-following-in-vitro-exposure-to-methylmercury-with-and-without-n-3-long-chain-polyunsaturated-fatty-acids-in-peripheral-blood-mononuclear-cells-from-systemic-lupus-erythematosus-patients-compared-to-healthy-controls
#2
William Crowe, Philip J Allsopp, Jennifer F Nyland, Pamela J Magee, J J Strain, Leanne C Doherty, Gene E Watson, Elisabeth Ball, Claire Riddell, David J Armstrong, Kayla Penta, Joshua J Todd, Toni Spence, Emeir M McSorley
Methylmercury (MeHg) is a proposed environmental stimulus in systemic lupus erythematosus (SLE). Humans are primarily exposed to MeHg through fish consumption. Fish are also important sources of n-3 long chain polyunsaturated fatty acids (n-3 LCPUFA). This in vitro study investigated the inflammatory response of isolated peripheral blood mononuclear cells (PBMCs), when exposed to either MeHg alone or with added n-3 LCPUFA, from SLE patients (N = 12) compared to healthy sex matched controls (N = 12)...
May 17, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29778621/-surgical-treatment-of-early-stage-non-small-cell-lung-cancer-by-thoracoscopic-segmental-resection
#3
A Seguin-Givelet, J Lutz, E Brian, M Grigoroiu, D Gossot
The rate of segmental resection for early stage non-small cell lung carcinoma (NSCLC) is increasing. However, the indications remain controversial. The aim of this study is to analyze the preliminary results of thoracoscopic segmental resection in early stage NSCLC in terms of morbidity, oncological validity and survival. We report the preliminary results of a consecutive series of 226 thoracoscopic segmentectomies for suspicion of early stage NSCLC. PATIENTS AND METHODS: Between 2007 and 2016, we performed 322 thoracoscopic anatomical sublobar resections (ASLR)...
May 17, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29778591/complications-of-antibiotic-cement-spacers-used-for-shoulder-infections
#4
Edward G McFarland, Jorge Rojas, Jeremy Smalley, Amrut U Borade, Jacob Joseph
BACKGROUND: Our aim was to evaluate complications related to commercially available antibiotic cement spacers used in the treatment of shoulder infections. METHODS: We performed a retrospective review of commercially available antibiotic spacers implanted in 53 patients (60 spacers) between April 2009 and October 2017 as part of a 2-stage treatment plan for infection at the site of a shoulder arthroplasty (n = 39), other (non-arthroplasty) shoulder surgery (n = 8), or primary shoulder infection without previous surgery (n = 6)...
May 16, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29778281/role-of-the-water-drinking-test-in-medically-treated-primary-open-angle-glaucoma-patients
#5
H Salcedo, D Arciniega, M Mayorga, L Wu
PURPOSE: The water-drinking test (WDT) has recently re-emerged as a possible way to determine the competency of the trabecular meshwork. We performed a prospective interventional study to test the hypothesis that the WDT could be useful in assessing fluctuations in patients undergoing treatment for primary open angle glaucoma (POAG). METHODS: We included 122 patients; 62 on medical treatment for POAG (n=123 eyes) and 60 controls (n=120 eyes). The study group had been on intraocular pressures (IOP) lowering treatment continuously for at least 3months with stable IOP...
May 16, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29778015/dietary-ala-epa-and-dha-have-distinct-effects-on-oxylipin-profiles-in-female-and-male-rat-kidney-liver-and-serum
#6
Shan Leng, Tanja Winter, Harold M Aukema
There is much data on the effects of dietary n-3 fatty acids on tissue fatty acid compositions, but comparable comprehensive data on their oxygenated metabolites (oxylipins) is limited. The effects of providing female and male rats with diets high in α-linolenic acid (ALA), EPA or DHA for 6 weeks on oxylipins and fatty acids in kidney, liver and serum were therefore examined. The oxylipin profile generally reflected fatty acids, but it also revealed unique effects of individual n-3 fatty acids that were not apparent from fatty acid data alone...
April 18, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29777863/comparison-of-histological-and-morphometrical-changes-underlying-subchondral-bone-abnormalities-in-inflammatory-and-degenerative-musculoskeletal-disorders-a-systematic-review
#7
REVIEW
M Loef, S van Beest, F P B Kroon, J L Bloem, O M Dekkers, M Reijnierse, J W Schoones, M Kloppenburg
OBJECTIVE: Subchondral bone abnormalities (SBAs) on magnetic resonance imaging (MRI) are observed frequently and associated with disease course in various musculoskeletal disorders. This review aims to map the existing knowledge of their underlying histological features, and to identify needs for future research. DESIGN: We conducted a systematic review following PRISMA guidelines until September 2017, including all studies correlating histological features to on MRI defined SBAs in patients with osteoarthritis (OA), rheumatoid arthritis (RA), spondyloarthritis (SpA) and degenerative disc disease (DDD)...
May 16, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29777706/n-3-polyunsaturated-fatty-acids-ameliorate-hepatic-steatosis-via-the-ppar-%C3%AE-cpt-1%C3%AE-pathway-in-a-mouse-model-of-parenteral-nutrition
#8
Feng Tian, Jiwei Wang, Haifeng Sun, Jianbo Yang, Peng Wang, Songlin Wan, Xuejin Gao, Li Zhang, Jieshou Li, Xinying Wang
Parenteral nutrition (PN) is one of the basic therapies for patients with intestinal failure; however, hepatic steatosis associated with PN limits the long-term use of PN. N-3 polyunsaturated fatty acids (PUFAs) have been used to improve clinical outcomes of patients receiving PN; however, the mechanisms by which n-3 PUFAs ameliorate hepatic steatosis remain unclear. In the present study, C57BL/6J mice were randomly assigned to three treatment groups, namely, enteral nutrition (EN), n-3 PUFAs, and n-6 PUFAs...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777611/extragastrointestinal-stromal-tumor-egist-a-16-year-experience-of-13-cases-diagnosed-at-a-single-center
#9
Engin Hatipoğlu
BACKGROUND Gastrointestinal stromal tumor (GISTs) rarely occurs outside the GI tract as extragastrointestinal stromal tumor (EGIST). The aim of this study was to review the clinical presentation, diagnosis, and outcome of EGIST at a single center. MATERIAL AND METHODS The study was a retrospective study performed at Istanbul University Hospital in a 16-year period and included patients with a histopathological diagnosis of EGIST confirmed to arise outside the GI tract. The patients' available medical records included patient demographics, imaging and surgical data, and diagnostic histopathology reports...
May 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29777349/robot-assisted-laparoscopic-pyeloplasty-a-single-centre-experience
#10
Thomas Charles Wood, Nicholas Raison, Oussama El-Hage, Kamran Ahmed, Declan Cahill, Benjamin J Challacombe, Muhammad Shamim Khan, Prokar Dasgupta
BACKGROUND: Ureteropelvic junction obstruction (UPJO) is characterised by an obstruction compromising the passage of urine from the renal pelvis into the ureter, and can be corrected by Robot-Assisted Laparoscopic Pyeloplasty (RALP). We aimed to evaluate the surgical outcomes of RALP, and examine the rates of true pain resolution following the procedure. METHODS: We retrospectively explored the records of all patients who underwent RALP between April 2005 and January 2017...
May 17, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29776549/in-situ-growth-of-iron-based-metal-organic-framework-crystal-on-ordered-mesoporous-carbon-for-efficient-electrocatalysis-of-p-nitrotoluene-and-hydrazine
#11
Shuang Yuan, Xiangjie Bo, Liping Guo
In this paper, H2 N-Fe-MIL-88B@OMC composites were fabricated by the simple hydrothermal method through in-situ growth iron-based metal-organic frameworks (H2 N-Fe-MIL-88B) on ordered mesoporous carbon (OMC). Compared with pure H2 N-Fe-MIL-88B crystals, the introduction of OMC can shrink the size of H2 N-Fe-MIL-88B, increase the specific surface area, decrease the electron transfer resistance and drastically improve the electrochemical performance of H2 N-Fe-MIL-88B@OMC. The composite exhibits remarkable electrocatalytic activity for p-nitrotoluene (p-NT) reduction and hydrazine (N2 H4 ) oxidation...
September 18, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29776540/unconventional-application-of-gold-nanoclusters-zn-mof-composite-for-fluorescence-turn-on-sensitive-detection-of-zinc-ion
#12
Yuanyuan Li, Xue Hu, Xiaodan Zhang, Haiyan Cao, Yuming Huang
Contrary to organic solvent-induced aggregation of Au nanoclusters (AuNCs), herein, we reported aggregation induced emission enhancement (AIEE) of AuNCs in an aqueous media through confinement of AuNCs by in situ formed Zn-MOF for detecting Zn2+ . Glutathione capped AuNCs (GSH-AuNCs) was synthesized through reduction of Au3+ by glutathione. Zn2+ could significantly enhance the fluorescence of GSH-AuNCs upon addition of 2-methylimidazole, which was attributed to the formation of Zn-MOF. XRD and TEM were used to characterize the in situ formed Zn-MOF...
September 18, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29775983/classification-and-microvascular-flap-selection-for-anterior-cranial-fossa-reconstruction
#13
James D Vargo, Wojciech Przylecki, Paul J Camarata, Brian T Andrews
BACKGROUND:  Microvascular reconstruction of the anterior cranial fossa (ACF) creates difficult challenges. Reconstructive goals and flap selection vary based on the defect location within the ACF. This study evaluates the feasibility and reliability of free tissue transfer for salvage reconstruction of low, middle, and high ACF defects. METHODS:  A retrospective review was performed. Reconstructions were anatomically classified as low (anterior skull base), middle (frontal bar/sinus), and high (frontal bone/soft tissue)...
May 18, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29775932/bond-length-equalization-with-molecular-aromaticity-a-new-measurement-of-aromaticity
#14
Chen-Fei Shen, Zi-Zhong Liu, Hong-Xia Liu, Hui-Qing Zhang
A new method to measure the amount of aromaticity is presented through the process of Bond Length Equalization (BLE). Degree of Aromaticity (DOA), a two-dimensional intensive quantity including geometric and energetic factors, as a new measurement of aromaticity is proposed. The unique characteristic of DOA and the formation of DOA will be displayed. The calculation of the geometrical optimization, DOA, Nucleus Independent Chemical Shifts (NICS) and Ring Stretching Vibration Raman Spectroscopy Frequency (RSVRSF) for the aromatic ring molecules - Gn Hn m (G = C, Si, Ge, n = 3, 5-8, m = +1, -1, 0, +1, +2) were calculated using the method of Density Functional Theory (DFT)...
May 8, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29775854/a-wavelength-modulated-localized-surface-plasmon-resonance-lspr-optical-fiber-sensor-for-sensitive-detection-of-mercury-ii-ion-by-gold-nanoparticles-dna-conjugates
#15
Shuo Jia, Chao Bian, Jizhou Sun, Jianhua Tong, Shanhong Xia
The study presented herein investigated an easy preparation, high performance, wavelength-modulated LSPR optical fiber chemosensor coated by gold nanospheres(AuNS) for Hg2+ detection based on thymine-Hg2+ -thymine base pair mismatches and the coupled plasmonic resonance effect.Utilizing electrostatic self-assembly method, the high density and dispersivity monolayer AuNS coated LSPR fiber sensor had the near field refractive index sensitivity up to 2016 nm/RIU. The single-strand probe DNA served as a binding element for free AuNS labelled-target DNA conjugates was attached to the monolayer AuNS by Au-S bond...
May 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29775815/simultaneous-magnetic-resonance-and-optical-elastography-acquisitions-comparison-of-displacement-images-and-shear-modulus-estimations-using-a-single-vibration-source
#16
Spencer T Brinker, Steven P Kearney, Thomas J Royston, Dieter Klatt
The mechanical properties of tissue are sensitive to pathological changes, which is the basis for using dynamic elastography as a diagnostic tool. The purpose of this study is a concurrent cross-modality comparison of two dynamic elastography methods, Magnetic Resonance Elastography (MRE) and Scanning Laser Doppler Vibrometry (SLDV) using a single vibration source method. Cylindrical soft tissue mimicking specimens of Plastisol and Ecoflex are stimulated with 60, 100, 150, and 250 Hz sinusoidal vibration during imaging...
May 8, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29775367/observation-of-stronger-than-binary-correlations-with-entangled-photonic-qutrits
#17
Xiao-Min Hu, Bi-Heng Liu, Yu Guo, Guo-Yong Xiang, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo, Matthias Kleinmann, Tamás Vértesi, Adán Cabello
We present the first experimental confirmation of the quantum-mechanical prediction of stronger-than-binary correlations. These are correlations that cannot be explained under the assumption that the occurrence of a particular outcome of an n≥3-outcome measurement is due to a two-step process in which, in the first step, some classical mechanism precludes n-2 of the outcomes and, in the second step, a binary measurement generates the outcome. Our experiment uses pairs of photonic qutrits distributed between two laboratories, where randomly chosen three-outcome measurements are performed...
May 4, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29775241/cleavage-of-unactivated-si-c-sp3-bonds-with-reed-s-carborane-acids-clean-formation-of-known-and-unknown-silylium-ions
#18
Qian Wu, Zheng-Wang Qu, Lukas Omann, Elisabeth Irran, Hendrik Klare, Martin Oestreich
An efficient method for the benzenium-ion-mediated cleavage of inert Si-C(sp3) bonds is reported. By this, various tetraalkylsilanes are converted into the corresponding counteranion-stabilized silylium ions. The reaction is chemoselective in the case of hexamethyldisilane. Computations reveal a mechanism with backside attack of the proton at one of the alkyl groups. Likewise, several activated Si-C(spn) bonds (n = 3-1) react equally well, and the protocol can be extended to the generation of stannylium ions...
May 18, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29775056/the-electronic-structure-of-beryllium-chains
#19
Ahmad W Huran, Nadia Ben Amor, Stefano Evangelisti, Sophie Hoyau, Thierry Leininger, Veronique Brumas
The electronic structure of quasi one-dimensional Beryllium chains, BeΝ has been theoretically studied at an ab initio level for N=3,4,...,12. In particular, linear and cyclic systems have been compared by using high-quality Coupled-Cluster formalisms. Both linear and cyclic species have been found to be local minima on the corresponding Potential-Energy Surface, for all the considered values of N. The linear geometry is the most stable one only in the case of Be4 , while the cyclic geometry is preferred for N>4...
May 18, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29775053/uranyl-tri-bis-silyl-amide-alkali-metal-contact-and-separated-ion-pair-complexes
#20
Philip J Cobb, David J Moulding, Fabrizio Ortu, Simon Randall, Ashley J Wooles, Louise S Natrajan, Stephen T Liddle
We report the preparation of a range of alkali metal uranyl(VI) tri- bis(silyl)amide complexes [{M(THF) x }{(μ-O)U(O)(N″)3 }] (1M) (N″ = {N(SiMe3 )2 }- , M = Li, Na, x = 2; M = K, x = 3; M = K, Rb, Cs, x = 0) containing electrostatic alkali metal uranyl-oxo interactions. Reaction of 1M with 2,2,2-cryptand or 2 equiv of the appropriate crown ether resulted in the isolation of the separated ion pair species [U(O)2 (N″)3 ][M(2,2,2-cryptand)] (3M, M = Li-Cs) and [U(O)2 (N″)3 ][M(crown)2 ] (4M, M = Li, crown = 12-crown-4 ether; M = Na-Cs, crown = 15-crown-5 ether)...
May 18, 2018: Inorganic Chemistry
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