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https://www.readbyqxmd.com/read/28808554/arthropod-communities-on-hybrid-and-parental-cottonwoods-are-phylogenetically-structured-by-tree-type-implications-for-conservation-of-biodiversity-in-plant-hybrid-zones
#1
Karl J Jarvis, Gerard J Allan, Ashley J Craig, Rebecca K Beresic-Perrins, Gina Wimp, Catherine A Gehring, Thomas G Whitham
Although hybridization in plants has been recognized as an important pathway in plant speciation, it may also affect the ecology and evolution of associated communities. Cottonwood species (Populus angustifolia and P. fremontii) and their naturally occurring hybrids are known to support different plant, animal, and microbial communities, but no studies have examined community structure within the context of phylogenetic history. Using a community composed of 199 arthropod species, we tested for differences in arthropod phylogenetic patterns within and among hybrid and parental tree types in a common garden...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28783213/bonding-in-heavier-group-14-zero-valent-complexes-combined-maximum-probability-domain-and-valence-bond-theory-approach
#2
Jan Turek, Benoît Braida, Frank De Proft
The bonding in heavier Group 14 zero-valent complexes of a general formula L2E (E = Si - Pb) is probed by combining Valence Bond (VB) theory and Maximum Probability Domain (MPD) approaches. All studied complexes are initially evaluated on the basis of the structural parameters and the shape of frontier orbitals. For the VB calculations three resonance structures are suggested, representing the "ylidone", "ylidene" and "bent allene" structures, respectively. The influence of both ligands and central atoms on the bonding situation is expressed in different weights of the resonance structures for the particular complexes...
August 7, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28773158/synthesis-and-characterization-of-bio-based-polyesters-poly-2-methyl-1-3-propylene-2-5-furanoate-poly-isosorbide-2-5-furanoate-poly-1-4-cyclohexanedimethylene-2-5-furanoate
#3
Zoi Terzopoulou, Nejib Kasmi, Vasilios Tsanaktsis, Nikolaos Doulakas, Dimitrios N Bikiaris, Dimitris S Achilias, George Z Papageorgiou
In the present study, three new biobased furanoate polyesters with potential use in food packaging applications, named poly(isosorbide furanoate) (PIsF), poly(methyl-propylene furanoate) (PMePF) and poly(1,4-cyclohexane-dimethylene 2,5-furanoate) (PCHDMF) were synthesized. As monomers for the preparation of the polyesters, 2,5-furandicarboxylic acid (FDCA) and diols with irregular or complicated structure were used, including isosorbide (IS), 2-methyl-1,3-propanediol (MPD) and 1,4-cyclohexane-dimethanol (CHDM)...
July 14, 2017: Materials
https://www.readbyqxmd.com/read/28768118/an-imaged-based-three-dimensional-study-of-first-metatarsal-protrusion-distance-in-women-with-and-without-hallux-valgus
#4
Ward M Glasoe, Michael W Rodriguez, Kara E Pioske
BACKGROUND: First metatarsal protrusion distance (MPD) has been commonly studied as a characteristic of hallux valgus deformity. To date, the majority of investigations have used radiographic methods, with most reporting first metatarsal (ray) protrusion to be associated with deformity. As an alternative, this study used a three dimensional (3D) image acquisition and data analysis method to quantify MPD. METHODS: Magnetic resonance images were acquired in weightbearing on 29 women (19 with hallux valgus; 10 controls)...
August 2, 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28763508/invasions-but-not-extinctions-change-phylogenetic-diversity-of-angiosperm-assemblage-on-southeastern-pacific-oceanic-islands
#5
Gastón O Carvallo, Sergio A Castro
We assessed changes in phylogenetic diversity of angiosperm flora on six oceanic islands located in the southeastern Pacific Ocean, by comparing flora from two periods: the pre-European colonization of islands and current times. We hypothesize that, in the time between these periods, extinction of local plant species and addition of exotic plants modified phylogenetic-α-diversity at different levels (deeper and terminal phylogeny) and increased phylo-β-diversity among islands. Based on floristic studies, we assembled a phylogenetic tree from occurrence data that includes 921 species, of which 165 and 756 were native or exotic in origin, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28762612/dissecting-seed-dormancy-and-germination-in-aquilegia-barbaricina-through-thermal-kinetics-of-embryo-growth
#6
Marco Porceddu, Efisio Mattana, Hugh W Pritchard, Gianluigi Bacchetta
Threshold-based thermal time models provide insight to the physiological switch from the dormant to the non-dormant, germinating seed. This approach was used to quantify the different growth responses of the embryo of seeds purported to have morphophysiological dormancy (MPD) through the complex phases of dormancy release and germination. Aquilegia barbaricina seeds were incubated at constant temperatures (10 - 25°C) and 25/10°C, without pre-treatment, after warm+cold stratification (W+C), and GA3 treatment...
August 1, 2017: Plant Biology
https://www.readbyqxmd.com/read/28755715/mathematical-modeling-of-microcystis-aeruginosa-growth-and-d-leu-1-microcystin-lr-production-in-culture-media-at-different-temperatures
#7
Crettaz Minaglia Melina Celeste, Rosso Lorena, Aranda Jorge Oswaldo, Goñi Sandro, Sedan Daniela, Andrinolo Dario, Giannuzzi Leda
The effect of temperature (26°C, 28°C, 30°C and 35°C) on the growth of native CAAT-3-2005 Microcystis aeruginosa and the production of Chlorophyll-a (Chl-a) and Microcystin-LR (MC-LR) were examined through laboratory studies. Kinetic parameters such as specific growth rate (μ), lag phase duration (LPD) and maximum population density (MPD) were determined by fitting the modified Gompertz equation to the M. aeruginosa strain cell count (cellsmL(-1)). A 4.8-fold increase in μ values and a 10.8-fold decrease in the LPD values were found for M...
July 2017: Harmful Algae
https://www.readbyqxmd.com/read/28753604/socs1-function-in-bcr-abl-mediated-myeloproliferative-disease-is-dependent-on-the-cytokine-environment
#8
Özlem Demirel, Olivier Balló, Pavankumar N G Reddy, Olesya Vakhrusheva, Jing Zhang, Astrid Eichler, Ramona Fernandes, Susanne Badura, Hubert Serve, Christian Brandts
Treatment with tyrosine kinase inhibitors is the standard of care for Philadelphia chromosome positive leukemias. However the eradication of leukemia initiating cells remains a challenge. Circumstantial evidence suggests that the cytokine microenvironment may play a role in BCR-ABL mediated leukemogenesis and in imatinib resistance. Gene expression analyses of BCR-ABL positive ALL long-term cultured cells revealed strong reduction of SOCS mRNA expression after imatinib treatment, thereby demonstrating a strong inhibition of cytokine signaling...
2017: PloS One
https://www.readbyqxmd.com/read/28736006/advantages-of-epidural-analgesia-on-pulmonary-functions-in-liver-transplant-donors
#9
H K Atalan, B Gucyetmez, R Donmez, A Kargi, K Y Polat
OBJECTIVE: Epidural analgesia (EA) has positive effects on anesthetic requirement, blood loss, postoperative analgesia, and pulmonary function tests (PFTs). The purpose of the present study was to investigate the effect of EA on postoperative PFTs in liver transplant donors (LTDs). METHODS: In the present study, 66 LTDs were classified as total intravenous anesthesia (TIVA) and TIVA+EA groups. Patient's age, sex, body mass index, induction and maintenance dose of propofol (IDP and MDP), operation duration, forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), FEV1/FVC ratio, visual analog scale (VAS), atelectasis scores, and lengths of intensive care unit (ICU) and hospital stays were recorded...
July 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28735450/prescription-drug-price-paradox-cost-analysis-of-canadian-online-pharmacies-versus-us-medicare-beneficiaries-for-the-top-100-drugs
#10
Sean Hyungwoo Kim, Young Joo Ryu, Na-Eun Cho, Andy Eunwoo Kim, Jongwha Chang
BACKGROUND AND OBJECTIVES: Despite the introduction of Medicare Part D (MPD) and 2012 Affordable Care Act (ACA), patients have a cost burden due to increases in drug prices. To overcome cost barriers, some patients purchase their medications from Canadian online pharmacies as Canadian prescription drug prices are believed to be lower than US prescription drug prices. The objective of this study was to determine which top 100 Medicare drugs can be imported to the USA legally, and to determine which type of prescription drug would be more beneficial to be purchased from Canadian online pharmacies...
July 22, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28730316/locus-coeruleus-neuronal-activity-correlates-with-behavioral-response-to-acute-and-chronic-doses-of-methylphenidate-ritalin-in-adolescent-rats
#11
Natasha Kharas, Cruz Reyes-Vazquez, Nachum Dafny
The objective of this study is to gain insight into the behavioral and neuronal changes induced by acute and chronic methylphenidate (MPD) administration. Specifically, there is limited knowledge of the effects of MPD on the locus coeruleus (LC), the main site of norepinephrine synthesis in the brain. In this study, LC neuronal firing rate was recorded simultaneously with locomotor activity in freely moving adolescent rats. Adolescent rats were chosen to mimic the age group in humans most affected by MPD exposure...
July 20, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28708719/magnetic-resonance-imaging-of-intracranial-hypotension-diagnostic-value-of-combined-qualitative-signs-and-quantitative-metrics
#12
Kerim Aslan, Hediye Pinar Gunbey, Leman Tomak, Zafer Ozmen, Lutfi Incesu
OBJECTIVE: The aim of this study was to investigate whether the use of combination quantitative metrics (mamillopontine distance [MPD], pontomesencephalic angle, and mesencephalon anterior-posterior/medial-lateral diameter ratios) with qualitative signs (dural enhancement, subdural collections/hematoma, venous engorgement, pituitary gland enlargements, and tonsillar herniations) provides a more accurate diagnosis of intracranial hypotension (IH). METHODS: The quantitative metrics and qualitative signs of 34 patients and 34 control subjects were assessed by 2 independent observers...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28700125/optical-assessment-of-mammographic-breast-density-by-a-12-wavelength-versus-a-continuous-spectrum-optical-spectroscopy-device
#13
E Jane Walter, Lothar Lilge
A 12-laser-wavelength, fixed source-detector position, cup-based optical breast spectroscopy (OBS) device was developed for use in large-scale, multi-center trials as a mammographic breast density (MBD) quantification and breast cancer risk pre-screening tool. In this study, the device was evaluated in comparison with a spectrometer-based device used in previous studies. The devices were compared on their ability to predict mammographic percent density (MPD) and to identify women with high MBD from optical spectra...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28698922/characterization-of-methyl-parathion-degradation-by-a-burkholderia-zhejiangensis-strain-ceib-s4-3-isolated-from-agricultural-soils
#14
Elida C Popoca-Ursino, Fernando Martínez-Ocampo, Edgar Dantán-González, Enrique Sánchez-Salinas, Ma Laura Ortiz-Hernández
Through the use of an enrichment technique, we isolated from the agricultural soils of Morelos in central México a strain of Burkholderia zhejiangensis identified as CEIB S4-3, it's could use the pesticide methyl parathion (MP) as the only source of carbon and degrade completely p-nitrophenol (PNP). For more efficient MP and PNP degradation by the CEIB S4-3 strain, the absence of an extra carbon source, a large inoculum and an MP concentration up to 50 mg/l are required. Sequence and annotation analysis of the draft genome, showed presence of mpd functional gene, which was expressed and its activity on the MP was confirmed...
July 11, 2017: Biodegradation
https://www.readbyqxmd.com/read/28697133/pancreatic-duct-in-autoimmune-pancreatitis-intraindividual-comparison-of-magnetic-resonance-pancreatography-at-1-5-t-and-3-0-t
#15
Jin Hee Kim, Jae Ho Byun, Myung-Hwan Kim, Sung Koo Lee, Song Cheol Kim, Hyoung Jung Kim, Seung Soo Lee, So Yeon Kim, Moon-Gyu Lee
OBJECTIVE: The aim of this study was to intraindividually compare magnetic resonance pancreatography (MRP) image quality at 1.5 T and 3.0 T when demonstrating main pancreatic duct (MPD) abnormalities in patients with autoimmune pancreatitis (AIP). METHODS: Thirty prospectively enrolled patients with AIP underwent MRP at both 1.5 T and 3.0 T followed by endoscopic retrograde pancreatography before treatment. Two readers independently analyzed the MRP images and graded the visualization of MPD strictures and full-length MPD, using endoscopic retrograde pancreatography as the reference standard, as well as overall image artifacts on a 4-point scale...
August 2017: Pancreas
https://www.readbyqxmd.com/read/28695812/clinical-and-sonographic-features-of-mammary-paget-s-disease
#16
Yao Wei, Qingli Zhu, Jianchu Li, Yuxin Jiang
Objective To summarize the clinical and sonographic features of mammary Paget's disease (MPD). Methods Totally 34 female patients with pathologically confirmed MPD were retrospectively recruited. According to diagnosis,the clinical data and sonographic findings were reviewed and analyzed. Results Among these 34 patients,7 patients had single MPD; in the remaining 27 patients,16 were accompanied by invasive ductal carcinoma (IDC),7 by ductal carcinoma in situ (DCIS),3 by both IDC and DCIS,and 1 by other pathologic types of carcinoma...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28685381/frequency-severity-and-risk-factors-for-acute-pancreatitis-after-percutaneous-transhepatic-biliary-stent-placement-across-the-papilla-of-vater
#17
Shunsuke Sugawara, Yasuaki Arai, Miyuki Sone, Hitoshi Katai
PURPOSE: To clarify the frequency, severity, and risk factors for acute pancreatitis after percutaneous biliary stent placement across the papilla of Vater for malignant biliary obstruction. MATERIALS AND METHODS: This retrospective study included 95 patients who underwent percutaneous biliary metallic stent placement (64 [67.4%] bare stents and 31 [32.6%] covered stents) across the papilla of Vater for malignant biliary obstruction between January 2010 and December 2012...
July 6, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28682431/uptodate-in-the-assessment-and-management-of-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#18
D Pagliari, A Saviano, M L Serricchio, A A Dal Lago, M G Brizi, F Lanza, R Manfredi, A Gasbarrini, F Attili
Intraductal Papillary Mucinous Neoplasms (IPMNs) are the most common cystic tumors of the pancreas and are considered premalignant lesions. IPMNs are characterized by the papillary growth of the ductal epithelium with rich mucin production, which is responsible for cystic segmental or diffuse dilatation of the main pancreatic duct (MPD) and/or its branches. According to the different involvement of pancreatic duct system, IPMNs are divided into main duct type (MD-IPMN), branch duct type (BD-IPMN), and mixed type (MT-IPMN)...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28667432/evaluation-of-the-international-consensus-guidelines-for-the-surgical-resection-of-intraductal-papillary-mucinous-neoplasms
#19
Mariko Tsukagoshi, Kenichiro Araki, Fumiyoshi Saito, Norio Kubo, Akira Watanabe, Takamichi Igarashi, Norihiro Ishii, Takahiro Yamanaka, Ken Shirabe, Hiroyuki Kuwano
BACKGROUND: International consensus guidelines for intraductal papillary mucinous neoplasms (IPMNs) were revised in 2012. AIMS: We aimed to evaluate the clinical utility of each predictor in the 2006 and 2012 guidelines and validate the diagnostic value and surgical indications. METHODS: Forty-two patients with surgically resected IPMNs were included. Each predictor was applied to evaluate its diagnostic value. RESULTS: The 2012 guidelines had greater accuracy for invasive carcinoma than the 2006 guidelines (64...
June 30, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28665337/first-principles-study-of-structural-electronic-and-magnetic-properties-of-metal-centered-tetrahexahedral-v15%C3%A2-%C2%BA-cluster
#20
Xiaojun Li, Hongjiang Ren, Xinwei Huang, Shuna Li
The V-centered bicapped hexagonal antiprism structure (A), as the most stable geometry of the cationic V15⁺ cluster, is determined by using infrared multiple photo dissociation (IR-MPD) in combination with density functional theory computations. It is found that the A structure can be stabilized by 18 delocalized 3c-2e σ-bonds on outer V₃ triangles of the bicapped hexagonal antiprism surface and 12 delocalized 4c-2e σ-bonds on inner trigonal pyramidal V₄ moiety, and the features are related to the strong p-d hybridization of the cluster...
June 30, 2017: Nanomaterials
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