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https://www.readbyqxmd.com/read/28523945/prevention-of-postmenopausal-osteoporosis-in-chinese-women-a-5-year-double-blind-randomized-parallel-placebo-controlled-study
#1
S Y Ran, Q Yu, Y Chen, S Q Lin
OBJECTIVES: To observe the effectiveness and safety of menopause-related hormone therapy (MHT) to prevent bone loss in Chinese women during the menopausal transition and early menopause, as well as to evaluate the effects of 5-year MHT on overall health to add Level I evidence for the prevention of osteoporosis using MHT. DESIGN: This clinical study was a prospective, double-blind, randomized, parallel placebo-controlled study. Chinese women in the menopausal transition and early menopause were randomly allocated to the MHT group or the placebo group...
May 19, 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/28523310/the-importance-of-bmp6-marker-within-the-process-of-epithelial-mesenchymal-transition-in-the-pleomorphic-adenoma-of-the-salivary-gland
#2
Anca Ştefania Enescu, Aurelia Enescu, Alina Nicoleta Căpitănescu, Mihaela Roxana Mitroi, Vlad Pădureanu, Elena Mădălina Dumitrescu, Dana Maria Albulescu, Marius Eugen Ciurea
The pleomorphic adenoma is the most frequently encountered tumor of the salivary glands, representing between 45% and 75% of the total number of the tumors of the salivary glands. According to the literature, there are many studies on the immunohistochemical aspects of the myoepithelial cells, present in the pleomorphic adenoma of the salivary gland. A big diversity of mono and polyclonal antibodies, such as the cytokeratins, muscular proteins and other markers, has been used. In our study, we investigated the immunohistochemical aspect of bone morphogenetic protein 6 (BMP6) marker concerning 15 cases of pleomorphic adenomas of the salivary glands...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28520592/validation-of-the-a-d-um-211-device-for-office-blood-pressure-measurement-according-to-the-european-society-of-hypertension-international-protocol-revision-2010
#3
Claudio Fania, Federica Albertini, Paolo Palatini
The aim of this study was to define the accuracy of UM-211, an automated oscillometric device for office use coupled to several cuffs for different arm sizes, according to the International Protocol of the European Society of Hypertension. The validation was performed in 33 individuals. Their mean age was 59.6±12.9 years, systolic blood pressure (BP) was 144.3±21.5 mmHg (range: 96-184 mmHg), diastolic BP was 86.8±18.5 mmHg (range: 48-124 mmHg), and arm circumference was 30.2±4.3 cm (range: 23-39 cm)...
May 17, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28502744/effect-of-high-dose-sodium-selenite-in-cardiac-surgery-patients-a%C3%A2-randomized-controlled-bi-center-trial
#4
Tanja Schmidt, Hans Pargger, Esther Seeberger, Friedemann Eckhart, Stefanie von Felten, Christoph Haberthür
BACKGROUND & AIMS: Cardiac surgery is accompanied by oxidative stress and systemic inflammatory response, which may be associated with organ dysfunction and increased mortality. Selenium and selenoenzymes are important constituents of anti-oxidative defense. We hypothesized that high-dose sodium selenite supplementation can attenuate the postoperative inflammation and might, therefore, improve clinical outcome. METHODS: Randomized, placebo-controlled, double-blinded, bi-center study on 411 adult patients undergoing elective cardiac surgery...
May 2, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28498678/mechanisms-and-origins-of-chemo-and-regioselectivities-of-ru-ii-catalyzed-decarboxylative-c-h-alkenylation-of-aryl-carboxylic-acids-with-alkynes-a-computational-study
#5
Jing-Lu Yu, Shuo-Qing Zhang, Xin Hong
The mechanisms and chemo- and regioselectivities of Ru(II)-catalyzed decarboxylative C-H alkenylation of aryl carboxylic acids with alkynes were investigated with density functional theory (DFT) calculations. The catalytic cycle involves sequential carboxylate-directed C-H activation, alkyne insertion, decarboxylation and protonation. The facile tether-assisted decarboxylation step directs the intermediate toward the desired decarboxylative alkenylation, instead of typical annulation and double alkenylation pathways...
May 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28492314/the-synthesis-of-chiral-%C3%AE-%C3%AE-diaryl-allylic-alcohols-and-their-use-in-the-preparation-of-%C3%AE-tertiary-allylamines-and-quaternary-%C3%AE-amino-acids
#6
Michał Pieczykolan, Aleksandra Narczyk, Sebastian Stecko
An approach to non-racemic β,β-diarylsubstituted allyl alcohols is described. Their synthesis starts from L-lactic acid-derived propargyl alcohol which is submitted to sequential Sonogashira/Suzuki or Sonagashira/Stille coupling reactions. Both approaches enable the synthesis either (Z)- or (E)-allylic alcohols regarding and order of an introducing coupling agents. The obtained allyl alcohols were applied in synthesis of non-racemic α-tertiary allylamines via stereocontrolled cyanate-to-isocyanate sigmatropic rearrangement reaction of the corresponding allyl carbamates...
May 11, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28491295/magnetic-resonance-imaging-planning-in-children-with-complex-congenital-heart-disease-a-new-approach
#7
Israel Valverde, Tarinee Tangcharoen, Tarique Hussain, Hubrecht de Bliek, Graeme Penney, Marcel Breeuwer, Tobias Schaeffter, Reza Razavi, Gerald Greil
OBJECTIVES: To compare a standard sequential 2D Planning Method (2D-PM) with a 3D offline Planning Method (3D-PM) based on 3D contrast-enhanced magnetic resonance angiography (CE-MRA) in children with congenital heart disease (CHD). DESIGN: In 14 children with complex CHD (mean: 2.6 years, range: 3 months to 7.6 years), axial and coronal cuts were obtained with single slice spin echo sequences to get the final double oblique longitudinal cut of the targeted anatomical structure (2D-PM, n = 31)...
January 2017: JRSM Cardiovascular Disease
https://www.readbyqxmd.com/read/28488748/formation-of-double-shelled-zinc-cobalt-sulfide-dodecahedral-cages-from-bimetallic-zeolitic-imidazolate-frameworks-for-hybrid-supercapacitors
#8
Xiong-Wen David Lou
Here, we develop a sequential chemical etching and sulfurization strategy to prepare well-defined double-shelled zinc-cobalt sulfide (Zn-Co-S) rhombic dodecahedral cages (RDCs). Yolk-shelled zinc/cobalt-based zeolitic imidazolate framework (Zn/Co-ZIF) RDCs are first synthesized by a controlled chemical etching process, followed by a hydrothermal sulfurization reaction to prepare double-shelled Zn-Co-S RDCs. Moreover, the strategy reported in this work enables easy control of the Zn/Co molar ratio in the obtained double-shelled Zn-Co-S RDCs...
May 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28486777/double-hydrophobic-elastin-like-polypeptides-with-added-functional-motifs-self-assembly-and-cytocompatibility
#9
Duc H T Le, Yoko Tsutsui, Ayae Sugawara-Narutaki, Hiroshi Yukawa, Yoshinobu Baba, Chikara Ohtsuki
We have recently developed a novel double-hydrophobic elastin-like triblock polypeptide called GPG, designed after the uneven distribution of two different hydrophobic domains found in elastin, an extracellular matrix protein providing elasticity and resilience to tissues. Upon temperature trigger, GPG undergoes a sequential self-assembling process to form flexible beaded nanofibers with high homogeneity and excellent dispersibility in water. Given that GPG might be a potential elastin-mimetic material, we sought to explore the biological activities of this block polypeptide...
May 9, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28484812/metabolic-engineering-of-gluconobacter-oxydans-621h-for-increased-biomass-yield
#10
Ines Kiefler, Stephanie Bringer, Michael Bott
The obligatory aerobic acetic acid bacterium Gluconobacter oxydans incompletely oxidizes carbon sources regio- and stereoselectively in the periplasm and therefore is used industrially for oxidative biotransformations, e. g., in vitamin C production. However, it has a very low biomass yield as the oxidized products largely remain in the medium and cannot be used for anabolism. Cytoplasmic carbon metabolism occurs via the pentose phosphate pathway and the Entner-Doudoroff pathway, whereas glycolysis and the tricarboxylic acid cycle are incomplete...
May 8, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28481020/activation-of-ryanodine-receptors-is-required-for-pka-mediated-downregulation-of-a-type-k-channels-in-rat-hippocampal-neurons
#11
Yoon-Sil Yang, Sang-Chan Jeon, Moon-Suk Kang, Seon-Hee Kim, Su-Yong Eun, Soo-Hee Jin, Sung-Cherl Jung
A-type K(+) channels (IA channels) contribute to learning and memory mechanisms by regulating neuronal excitabilities in the CNS, and their expression level is targeted by Ca(2+) influx via synaptic NMDA receptors (NMDARs) during long-term potentiation (LTP). However, it is not clear how local synaptic Ca(2+) changes induce IA downregulation throughout the neuron, extending from the active synapse to the soma. In this study, we tested if two major receptors of endoplasmic reticulum (ER), ryanodine (RyRs), and IP3 (IP3 R) receptors, are involved in Ca(2+) -mediated IA downregulation in cultured hippocampal neurons of rats...
May 8, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28477345/fetoscopic-laser-coagulation-in-1020-pregnancies-with-twin-to-twin-transfusion-syndrome-demonstrates-improvement-of-double-survival-rates
#12
W Diehl, A Diemert, D Grasso, S Sehner, K Wegscheider, K Hecher
OBJECTIVE: To investigate the growing experience and learning curve of fetoscopic laser coagulation of the placental vascular anastomoses in severe mid trimester twin-to-twin transfusion syndrome (TTTS) and its influence on perinatal outcome in a single center setting. METHODS: Between 01/1995 and 03/2013 we performed laser therapy in 1020 consecutive pregnancies with TTTS between 15.1 and 27.4 weeks of gestation. We compared perinatal outcome in blocks of five sequential groups...
May 6, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28476002/sorption-desorption-of-selenite-and-selenate-on-mg-al-layered-double-hydroxide-in-competition-with-nitrate-sulfate-and-phosphate
#13
Leonel Vinicius Constantino, Juliana Nunes Quirino, Alessandra Maffei Monteiro, Taufik Abrão, Paulo Sérgio Parreira, Alexandre Urbano, Maria Josefa Santos
Selenate and selenite are considered emerging contaminants and pose a risk to living organisms. Since selenium anion species are at low concentration in aquatic environments, materials for its retention are required to enable monitoring. Herein, hydrotalcite was calcined and characterised to investigate sorption and desorption of selenite and selenate in competition with nitrate, sulfate and phosphate. Sorption experiments were carried out in batch system and desorption by sequential dilution. Selenite and selenate concentration remaining after N desorption steps was determined by mass balance...
April 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28472654/mosaic-analysis-with-double-markers-reveals-distinct-sequential-functions-of-lgl1-in-neural-stem-cells
#14
Robert Beattie, Maria Pia Postiglione, Laura E Burnett, Susanne Laukoter, Carmen Streicher, Florian M Pauler, Guanxi Xiao, Olga Klezovitch, Valeri Vasioukhin, Troy H Ghashghaei, Simon Hippenmeyer
The concerted production of neurons and glia by neural stem cells (NSCs) is essential for neural circuit assembly. In the developing cerebral cortex, radial glia progenitors (RGPs) generate nearly all neocortical neurons and certain glia lineages. RGP proliferation behavior shows a high degree of non-stochasticity, thus a deterministic characteristic of neuron and glia production. However, the cellular and molecular mechanisms controlling RGP behavior and proliferation dynamics in neurogenesis and glia generation remain unknown...
May 3, 2017: Neuron
https://www.readbyqxmd.com/read/28471672/controlling-excited-state-single-versus-double-proton-transfer-for-2-2-bipyridyl-3-3-diol-solvent-effect
#15
Jinfeng Zhao, Xiaoyan Liu, Yujun Zheng
In this work, we theoretically investigate the sequential excited state double proton transfer (ESDPT) mechanism of a representative intramolecular hydroxyl (OH)-type hydrogen molecule 2,2'-bipyridyl-3,3'-diol (BP(OH)2). We mainly adopt three kinds of different polar solvents (nonpolar cyclohexane (CYH), polar acetonitrile (ACN), and moderate chloroform (CHCl3)) to explore solvent effects on this system. Two intramolecular hydrogen bonds of BP(OH)2 are testified to be strengthened in the S1 state, which provides possibility for ESDPT process...
May 11, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28467316/the-fabrication-of-double-layered-chitosan-gelatin-genipin-nanosphere-coating-for-sequential-and-controlled-release-of-therapeutic-proteins
#16
Ruiying Chen, Xinjie Cai, Kena Ma, Yi Zhou, Yining Wang, Tao Jiang
Bone regeneration is a complicated process and includes a number of distinct and sequential stages of coordinated cellular actions under the regulation of multiple growth factors. Therefore, bone grafting materials in which growth factors can be incorporated and released in a programmed order in line with the bone tissue healing process may lead to desirable clinical outcomes. In the present study, a double-layered chitosan/gelatin/genipin (d-CSG/G) nanosphere coating is developed by using layer-by-layer electrophoretic deposition (EPD) and genipin crosslinking...
May 3, 2017: Biofabrication
https://www.readbyqxmd.com/read/28467150/impact-of-zinc-supplementation-on-the-clinical-outcomes-of-patients-with-severe-head-trauma-a-double-blind-randomized-clinical-trial
#17
Maryam Khazdouz, Mohsen Mazidi, Mohammad-Reza Ehsaei, Gordon Ferns, Andre Pascal Kengne, Abdol-Reza Norouzy
To determine the effects of zinc supplementation on clinical outcomes of patients with severe head trauma, this double-blind clinical trial randomly allocated 100 patients with severe head trauma, aged between 18 to 65 years, to receive placebo or 120 mg zinc via a nasogastric tube for 15 days. Plasma zinc and copper, 24-hour urinary zinc excretion, Sequential Organ Failure Assessment (SOFA) were assessed on days 1, 7, and 16. Erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and white blood cell (WBC) count were measured on days 1 and 16...
May 3, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28467067/chemo-regio-and-stereoselective-construction-of-core-skeleton-of-furo-2-3-b-pyrrole-via-multicomponent-bicyclization-reaction
#18
Ning-Ning Man, Jia-Qi Wang, Li-Ming Zhang, Li-Rong Wen, Ming Li
An efficient and straightforward N-ethyldiisopropylamine (DIPEA)-catalyzed multicomponent bicyclization reaction was developed to synthesize furo[2,3-b]pyrrole derivatives from β-ketothioamides, glyoxals, and ethyl cyanacetate in EtOH at rt for 1.5 h. This was achieved via a sequential Knoevenagel condensation, Michael addition, and double cyclization, resulting in continuous formation of four chemical bonds (two C-C, two C-O, and one C-N bonds), two five-membered cycles, and three stereogenic centers in a one-pot operation...
May 12, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28452236/mobile-access-to-virtual-randomization-for-investigator-initiated-trials
#19
Thomas M Deserno, András P Keszei
Background/aims Randomization is indispensable in clinical trials in order to provide unbiased treatment allocation and a valid statistical inference. Improper handling of allocation lists can be avoided using central systems, for example, human-based services. However, central systems are unaffordable for investigator-initiated trials and might be inaccessible from some places, where study subjects need allocations. We propose mobile access to virtual randomization, where the randomization lists are non-existent and the appropriate allocation is computed on demand...
April 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
https://www.readbyqxmd.com/read/28446274/-efficacy-of-idarubicin-based-stratified-therapy-for-acute-promyelocytic-leukemia
#20
Wei Guan, Wen-Jun Li, Lan Yang, Yu Jing, Li Yu
OBJECTIVE: To investigate the remission rate of all-transretinoic acid (ATRA) combined with arsenics acid(ATO) on acute promyelocytic leukemia, and the efficacy and safety of sequential consolidation therapy with idarubicin, all-trans retinoic acid and arsenic trioxide/compound Huangdai tablet. METHODS: Between January 2011 and January 2016 years 22 patients with newly diagnosed acute promyelocytic leukemia who received ATRA combined with ATO till complete remission in our hospital were retrospectively analyzed...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
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