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https://www.readbyqxmd.com/read/29334698/endoscopic-ultrasound-and-the-liver-current-applications-and-beyond
#1
REVIEW
Neil D Shah, Todd H Baron
The diagnosis and management of many gastrointestinal conditions has been augmented by the development of endoscopic ultrasound. Its role in the diagnosis and management of liver disease has been somewhat limited, but with the rapid development of therapeutic advancements it has quickly emerged as a useful tool in the management of complex hepatic conditions. This includes its use in the management of complications of portal hypertension as well as its use in liver lesions and cancer. In this paper, we review case studies, case series and trials for hepatic applications of endoscopic ultrasound to provide an overview of its utilization in this field and demonstrating its more novel applications for future use...
January 15, 2018: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/29334695/complex-interplay-among-adiposity-insulin-resistance-and-bone-health
#2
REVIEW
C Ma, K T Tonks, J R Center, D Samocha-Bonet, J R Greenfield
Obesity and osteoporosis are common public health problems. Paradoxically, while obesity is associated with higher bone density, type 2 diabetic obese individuals have an increased fracture risk. Although obesity and insulin resistance co-exist, some obese individuals remain insulin-sensitive. We suggest that the apparent paradox relating obesity, bone density and fracture risk in type 2 diabetes may be at least partly influenced by differences in bone strength and quality between insulin-resistant and insulin-sensitive obese individuals...
January 15, 2018: Clinical Obesity
https://www.readbyqxmd.com/read/29334642/examining-the-latent-structure-mechanisms-for-comorbid-posttraumatic-stress-disorder-and-major-depressive-disorder
#3
Margo C Hurlocker, Desirae N Vidaurri, Lisa-Ann J Cuccurullo, Kelly Maieritsch, C Laurel Franklin
BACKGROUND: Posttraumatic stress disorder (PTSD) is a complex psychiatric illness that can be difficult to diagnose, due in part to its comorbidity with major depressive disorder (MDD). Given that researchers have found no difference in prevalence rates of PTSD and MDD after accounting for overlapping symptoms, the latent structures of PTSD and MDD may account for the high comorbidity. In particular, the PTSD Negative Alterations in Cognition and Mood (NACM) and Hyperarousal factors have been characterized as non-specific to PTSD...
January 8, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29334611/understanding-complex-tribofilms-by-means-of-h3bo3-b2o3-model-glasses
#4
Fabiana Spadaro, Antonella Rossi, Shivaprakash N Ramakrishna, Emmanuel Lainé, Philip Woodward, Nicholas D Spencer
The discovery of the spontaneous reaction of boric oxides with moisture in the air to form lubricious H3BO3 films has led to great interest in the tribology of boron compounds in general. Despite this, a study of the growth kinetics of H3BO3 on a B2O3 substrate under controlled relative humidity (RH), has not yet been reported in the literature. Here, we describe the tribological properties of H3BO3-B2O3 glass systems after aging under controlled relative humidity over different lengths of time. A series of tribological tests has been performed applying a normal load of 15 N, at both room temperature and 100°C in Yubase 4 oil...
January 15, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29334586/a-non-heme-iron-photocatalyst-for-light-driven-aerobic-oxidation-of-methanol
#5
Wesley Richard Browne, Juan Chen, Apparao Draksharapu, Maja Gruden, Stepan Stepanovic
The non-heme (L)FeIII and (L)FeIII-O-FeIII(L) complexes (L = 1,1-di(pyridin-2-yl)-N,N-bis(pyridin-2-ylmethyl)ethan-1-amine) undergoes reduction under irradiation to the FeII state with concomitant oxidation of methanol to methanal, without the need for a secondary photosensitizer. Spectroscopic and Density Functional Theory (DFT) studies support a mechanism in which irradiation results in charge transfer excitation of a FeIII--O-FeIII complex to generate [(L)FeIV=O]2+ (observed transiently during irradiation in acetonitrile), and an equivalent of LFeII...
January 15, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29334553/post-treatment-controllers-after-treatment-interruption-in-chronically-hiv-infected-patients
#6
Franco Maggiolo, Elisa Di Filippo, Laura Comi, Annapaola Callegaro
OBJECTIVE: Control HIV replication requires continuous combined antiretroviral therapy (cART) as discontinuation of cART results in a rapid viral rebound. However, a few individuals exist who took cART for several years and did not show the expected viral rebound after treatment cessation. Most post-treatment controllers (PTCs) are early treated individuals. We report three cases who started cART during chronic infection. DESIGN: Patients were treated and monitored according to Italian guidelines...
January 13, 2018: AIDS
https://www.readbyqxmd.com/read/29334528/comparison-of-laparoscopic-and-open-pancreaticoduodenectomy-for-the-treatment-of-nonpancreatic-periampullary-adenocarcinomas
#7
Ling-Wei Meng, Yun-Qiang Cai, Yong-Bin Li, He Cai, Bing Peng
BACKGROUND: Laparoscopic pancreaticoduodenectomy (LPD), a surgical option for nonpancreatic periampullary adenocarcinoma (NPPA), is a complex procedure that has become increasing popular. However, there is no consensus as to whether this technique should be performed routinely. Our aim was to evaluate the outcomes of LPD compared with open pancreaticoduodenectomy (OPD). MATERIALS AND METHODS: From October 2010 to September 2015, 58 LPDs were performed to treat NPPA and were compared with 58 OPDs, which can theoretically be carried out by laparoscopic approach...
January 12, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/29334523/not-a-straight-line-patient-s-experiences-of-prostate-cancer-and-their-journey-through-the-healthcare-system
#8
Kristina Schildmeijer, Oscar Frykholm, Åsa Kneck, Mirjam Ekstedt
BACKGROUND: Cancer and its treatment can severely impact quality of life, giving rise to complex needs with respect to follow-up care. To support patient needs and increase efficiency of care with limited resources, the Swedish government has launched national reforms to redesign cancer care pathways. OBJECTIVE: The aim of this study was to explore how prostate cancer patients experience their journey through the healthcare system when their care is provided according to the standardized care pathway, as described in healthcare policy documents...
January 12, 2018: Cancer Nursing
https://www.readbyqxmd.com/read/29334465/design-of-mini-nucleic-acid-probe-for-cooperative-binding-of-rna-repeated-transcript-associated-with-myotonic-dystrophy-type-1
#9
Wei-Che Hsieh, Raman Bahal, Shivaji Thadke, Kirti Bhatt, Krzysztof Sobczak, Charles A Thornton, Danith H Ly
Toxic RNAs containing expanded trinucleotide repeats are the cause of many neuromuscular disorders, one being myotonic dystrophy type 1 (DM1). DM1 is triggered by CTG-repeat expansion in the 3'-UTR of the DMPK gene, resulting in toxic-gain of RNA function through sequestration of MBNL1 protein, among others. Herein we report the development of a relatively short MPPNA probe, two triplet-repeats in length, containing terminal pyrene moieties, that is capable of binding rCUG-repeats in a sequence-specific and selective manner...
January 15, 2018: Biochemistry
https://www.readbyqxmd.com/read/29334457/new-mechanism-for-ferroelectricity-in-the-perovskite-ca2-xmnxti2o6-synthesized-by-spark-plasma-sintering
#10
Zongyao Li, Yujin Cho, Xiang Li, Xinyu Li, Akihisa Aimi, Yoshiyuki Inaguma, Jose Antonio Alonso, Maria Teresa Fernandez-Diaz, Jiaqiang Yan, Michael C Downer, Graeme Henkelman, John B Goodenough, Jianshi Zhou
Perovskite oxides hosting ferroelectricity are particularly important materials for modern technologies. The ferroelectric transition in the well-known oxides BaTiO3 and PbTiO3 is realized by softening of a vibration mode in the cubic perovskite structure. For most perovskite oxides, octahedral-site tilting systems are developed to accommodate the bonding mismatch due to a geometric tolerance factor t = (A-O)/[√2(B-O)] < 1. In the absence of cations having lone-pair electrons, e.g. Bi3+ and Pb2+, all simple and complex A-site and B-site ordered perovskite oxides with a t < 1 show a variety of tilting systems and none of them become ferroelectric...
January 15, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29334454/aurophilic-interactions-in-l-au-x-%C3%A2-l-au-x-dimers-calibration-by-experiment-and-theory
#11
Erik Andris, Prokopis Andrikopoulos, Jiří Schulz, Jan Turek, Aleš Růžička, Jana Roithová, Lubomír Rulíšek
Attractive metallophilic (aurophilic, argentophilic, cuprophilic, …) interactions play an important role in arrangement and stabilization of oligonuclear metal ion complexes. We report a combined experimental and theoretical assessment of aurophilic interactions in closed-shell gold(I) dimers. The experimental binding energies were obtained for charged [(LH)AuCl]+…[(L')AuCl] dimers (L is either a phosphine or a N-heterocyclic carbene ligand) in the gas phase. These energies served for benchmarking of correlated quantum chemical calculations (CCSD(T)-calibrated SCS-MP2/CBS method) that were then applied to neutral [(L)AuX]…[(L')AuX] dimers (X = Cl, Br, I)...
January 15, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29334423/mechanochemical-activation-of-iron-cyano-complexes-a-prebiotic-impact-scenario-for-the-synthesis-of-%C3%AE-amino-acid-derivatives
#12
Carsten Bolm, Rita Mocci, Christian Schumacher, Mathias Turberg, Francesco Puccetti, José G Hernández
Mechanochemical activation of iron cyano complexes by ball milling results in the formation of HCN, which can be trapped and incorporated into α-aminonitriles. This prebiotic impact scenario can be extended by mechanochemically transforming the resulting α-aminonitriles into α-amino amides using a chemical route related to early Earth conditions.
January 15, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29334419/a-metallo-pro-drug-to-target-cu-ii-in-the-context-of-alzheimer-s-disease
#13
Amandine Conte-Daban, Vinita Ambike, Régis Guillot, Nicolas Delsuc, Clotilde Policar, Christelle Hureau
Alzheimer's disease and oxidative stress are connected. In the present communication, we report the use of a Mn(II)-based superoxide dismutase mimic ([MnII(L)]+, 1+) as a pro-drug candidate to target Cu(II) associated events, i.e. Cu(II)-induced formation of reactive oxygen species (ROS) and modulation of the amyloid-beta (Abeta) peptide aggregation. Complex 1+ is able to remove Cu(II) from Abeta, stop ROS and prevent alteration of Abeta aggregation as would do the corresponding free ligand LH. Using 1+ instead of LH in further biological applications would have the double advantage to avoid the cell toxicity of LH and to benefit from its proved SOD-like activity...
January 15, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29334412/stallion-semen-quality-depends-on-mhc-matching-to-teaser-mare
#14
E Jeannerat, E Marti, C Berney, F Janett, H Bollwein, H Sieme, D Burger, C Wedekind
The major histocompatibility complex (MHC) has repeatedly been found to influence mate choice of vertebrates, with MHC-dissimilar mates typically being preferred over MHC-similar mates. We used horses (Equus caballus) to test whether MHC matching also affects male investment into ejaculates after short exposure to a female. Semen characteristics varied much among stallions. Controlling for this variance with a full-factorial within-subject experimental design, we found that a short exposure to an MHC-dissimilar mare enhanced male plasma testosterone and led to ejaculates with elevated sperm numbers as compared to exposure to an MHC-similar mare...
January 15, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29334410/selective-binding-and-precipitation-of-cesium-ions-from-aqueous-solutions-a-size-driven-supramolecular-reaction
#15
Ravell Bengiat, Benny Bogoslavsky, Daniel Mandler, Joseph Almog
The nuclear disasters of Chernobyl and Fukushima presented an urgent need for finding solutions to treatment of radioactive wastes. Among the by-products of nuclear fission is the radioactive 137Cs, which evokes an environmental hazard due to its long half-life (>30 years) and high solubility in water. In this work, a water-soluble organic ligand, readily obtained from alloxan and 1,3,5-benzenetriol, has been found to selectively bind and precipitate Cs+ ions from aqueous solutions. The special rigid structure of the ligand, which consists of a "tripodal" carbonyl base above and below an aromatic plane, contributes to the size-driven selectivity towards the large Cs+ ions and the formation of a giant, insoluble supramolecular complex...
January 15, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29334409/climate-driven-mitochondrial-selection-a-test-in-australian-songbirds
#16
Annika Mae Lamb, Han Ming Gan, Chris Greening, Leo Joseph, Yin Peng Lee, Alejandra Morán-Ordóñez, Paul Sunnucks, Alexandra Pavlova
Diversifying selection between populations that inhabit different environments can promote lineage divergence within species and ultimately drive speciation. The mitochondrial genome (mitogenome) encodes essential proteins of the oxidative phosphorylation (OXPHOS) system and can be a strong target for climate-driven selection (i.e. associated with inhabiting different climates). We investigated whether Pleistocene climate changes drove mitochondrial selection and evolution within Australian birds. First, using phylogeographic analyses of the mitochondrial ND2 gene for 17 songbird species, we identified mitochondrial clades (mitolineages)...
January 15, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29334398/formation-of-shelf-stable-pickering-high-internal-phase-emulsions-hipe-through-the-inclusion-of-whey-protein-microgels
#17
Somayeh Zamani, Nicholas Malchione, Michael J Selig, Alireza Abbaspourrad
High internal phase emulsions (HIPE) prepared using whey protein microgels (WPMs) as a surfactant were demonstrated to have substantially higher stability than HIPEs prepared using similar loadings of non-gelled whey protein isolate (WPI) or Tween 20. Microgel colloids were prepared from WPI solutions by heat treatment at 85 °C in a narrow pH range (5.8-6.0) to particle sizes of approximately 90, 160 and 350 nm in diameter. ζ-potentials of the WPM increased in negativity with decreasing particle size from -7...
January 15, 2018: Food & Function
https://www.readbyqxmd.com/read/29334389/effect-of-coordination-geometry-on-the-magnetic-properties-of-a-series-of-ln2-and-ln4-hydroxo-clusters
#18
Amaleswari Rasamsetty, Chinmoy Das, E Carolina Sañudo, Maheswaran Shanmugam, Viswanathan Baskar
A series of three isostructural tetranuclear complexes with the general molecular formula [Ln4(μ3-OH)4(L)4(μ2-piv)4(MeOH)4] (Ln = Gd 1, Dy 2 and Ho 3; LH = [1,3-bis(o-methoxyphenyl)-propane-1,3-dione]) were isolated and unambiguously characterized by single crystal XRD. Under similar reaction conditions, simply changing the co-ligand from pivalate to 2,6-bis(hydroxymethyl)-p-cresol (LH'3) led to the isolation of dinuclear Ln(iii) complexes with the general molecular formula [Ln2(L)4(μ2-LH'2)2]·4DMF (Ln = Gd 4, Dy 5 and Ho 6)...
January 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29334383/a-simple-method-for-determining-the-ligand-affinity-toward-a-zinc-enzyme-model-by-using-a-tamra-tamra-interaction
#19
Hiroshi Kusamoto, Akio Shiba, Masaya Tsunehiro, Haruto Fujioka, Emiko Kinoshita-Kikuta, Eiji Kinoshita, Tohru Koike
Thiolate coordination to zinc(ii) ions occurs widely in such functional biomolecules as zinc enzymes or zinc finger proteins. Here, we introduce a simple method for determining the affinity of ligands toward the zinc-enzyme active-center model tetramethylrhodamine (TAMRA)-labeled 1,4,7,10-tetraazacyclododecane (cyclen)-zinc(ii) complex (TAMRA-ZnL). The 1 : 1 complexation of TAMRA-labeled cysteine (TAMRA-Cys) with TAMRA-ZnL (each at 2.5 μM), in which the TAMRA moieties approach one another closely, induces remarkable changes in the visible absorption and fluorescence spectra at pH 7...
January 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29334381/the-molecular-basis-of-subtype-selectivity-of-human-kinin-g-protein-coupled-receptors
#20
Lisa Joedicke, Jiafei Mao, Georg Kuenze, Christoph Reinhart, Tejaswi Kalavacherla, Hendrik R A Jonker, Christian Richter, Harald Schwalbe, Jens Meiler, Julia Preu, Hartmut Michel, Clemens Glaubitz
G-protein-coupled receptors (GPCRs) are the most important signal transducers in higher eukaryotes. Despite considerable progress, the molecular basis of subtype-specific ligand selectivity, especially for peptide receptors, remains unknown. Here, by integrating DNP-enhanced solid-state NMR spectroscopy with advanced molecular modeling and docking, the mechanism of the subtype selectivity of human bradykinin receptors for their peptide agonists has been resolved. The conserved middle segments of the bound peptides show distinct conformations that result in different presentations of their N and C termini toward their receptors...
January 15, 2018: Nature Chemical Biology
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