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https://www.readbyqxmd.com/read/28194014/modulating-supramolecular-binding-of-carbon-dioxide-in-a-redox-active-porous-metal-organic-framework
#1
Zhenzhong Lu, Harry G W Godfrey, Ivan da Silva, Yongqiang Cheng, Mathew Savage, Floriana Tuna, Eric J L McInnes, Simon J Teat, Kevin J Gagnon, Mark D Frogley, Pascal Manuel, Svemir Rudić, Anibal J Ramirez-Cuesta, Timothy L Easun, Sihai Yang, Martin Schröder
Hydrogen bonds dominate many chemical and biological processes, and chemical modification enables control and modulation of host-guest systems. Here we report a targeted modification of hydrogen bonding and its effect on guest binding in redox-active materials. MFM-300(V(III)) {[V(III)2(OH)2(L)], LH4=biphenyl-3,3',5,5'-tetracarboxylic acid} can be oxidized to isostructural MFM-300(V(IV)), [V(IV)2O2(L)], in which deprotonation of the bridging hydroxyl groups occurs. MFM-300(V(III)) shows the second highest CO2 uptake capacity in metal-organic framework materials at 298 K and 1 bar (6...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28179932/root-canal-anatomy-and-morphology-of-mandibular-first-molars-in-a-selected-iranian-population-an-in-vitro-study
#2
Nahid Mohammadzadeh Akhlaghi, Zohreh Khalilak, Mehdi Vatanpour, Saman Mohammadi, Sakineh Pirmoradi, Mahta Fazlyab, Kamran Safavi
INTRODUCTION: The aim of this study was to evaluate root canal anatomy of mandibular first molars (MFM) in a selected Iranian Population using clearing technique. METHODS AND MATERIALS: A total of 150 extracted MFMs were cleared. The root canal morphology (including the root numbers and root length) and the anatomy of the root canal system (including is the number and type of canals based on Vertucci's classification, canal curvature according to Schneider's method and the presence of isthmus) was evaluated using the buccolingual and mesiodistal parallel x-rays and stereomicroscope...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28176793/unravelling-exceptional-acetylene-and-carbon-dioxide-adsorption-within-a-tetra-amide-functionalized-metal-organic-framework
#3
Florian Moreau, Ivan da Silva, Nada H Al Smail, Timothy L Easun, Mathew Savage, Harry G W Godfrey, Stewart F Parker, Pascal Manuel, Sihai Yang, Martin Schröder
Understanding the mechanism of gas-sorbent interactions is of fundamental importance for the design of improved gas storage materials. Here we report the binding domains of carbon dioxide and acetylene in a tetra-amide functionalized metal-organic framework, MFM-188, at crystallographic resolution. Although exhibiting moderate porosity, desolvated MFM-188a exhibits exceptionally high carbon dioxide and acetylene adsorption uptakes with the latter (232 cm(3) g(-1) at 295 K and 1 bar) being the highest value observed for porous solids under these conditions to the best of our knowledge...
February 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28170117/prevention-of-preterm-birth-with-pessary-in-twins-poppt-a-randomized-controlled-trial
#4
Vincenzo Berghella, Lorraine Dugoff, Jack Ludmir
OBJECTIVES: To evaluate if cervical pessary placement prevents PTB in twin gestations with a short midtrimester transvaginal ultrasound (TVU) cervical length (CL). METHODS: Multicenter randomized controlled trial of asymptomatic women with twin gestations with a TVU CL ≤30 mm at 18(0) -27(6) weeks. TVU CL screening was performed at the time of the anatomy scan at 18(0) -23(6) , and at subsequent scheduled ultrasounds prior to 28 weeks. Women with a TVU CL ≤30 mm at 18(0) -27(6) weeks were randomized to receive the Bioteque cup cervical pessary or no pessary...
February 7, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28165249/low-temperature-magnetic-force-microscopy-on-single-molecule-magnet-based-microarrays
#5
Michele Serri, Matteo Mannini, Lorenzo Poggini, Emilio Velez-Fort, Brunetto Cortigiani, Philippe Sainctavit, Donella Rovai, Andrea Caneschi, Roberta Sessoli
The magnetic properties of some single molecule magnets (SMM) on surfaces can be strongly modified by the molecular packing in nanometric films/aggregates or by interactions with the substrate, which affect the molecular orientation and geometry. Detailed investigations of the magnetism of thin SMM films and nanostructures are necessary for the development of spin-based molecular devices, however this task is challenged by the limited sensitivity of laboratory based magnetometric techniques and often requires access to synchrotron light sources to perform surface sensitive X-ray magnetic circular dichroism (XMCD) investigations...
February 6, 2017: Nano Letters
https://www.readbyqxmd.com/read/28147654/radiation-pressure-excitation-of-a-low-temperature-atomic-force-magnetic-force-microscope-for-imaging-in-4-300-k-temperature-range
#6
Ümit Çelik, Özgür Karcı, Yiğit Uysallı, H Özgür Özer, Ahmet Oral
We describe a novel radiation pressure based cantilever excitation method for imaging in dynamic mode atomic force microscopy (AFM) for the first time. Piezo-excitation is the most common method for cantilever excitation, however it may cause spurious resonance peaks. Therefore, the direct excitation of the cantilever plays a crucial role in AFM imaging. A fiber optic interferometer with a 1310 nm laser was used both for the excitation of the cantilever at the resonance and the deflection measurement of the cantilever in a commercial low temperature atomic force microscope/magnetic force microscope (AFM/MFM) from NanoMagnetics Instruments...
January 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28087121/upper-extremity-outcome-measures-for-collagen-vi-related-myopathy-and-lama2-related-muscular-dystrophy
#7
Roxanna M Bendixen, Jocelyn Butrum, Mina S Jain, Rebecca Parks, Bonnie Hodsdon, Carmel Nichols, Michelle Hsia, Leslie Nelson, Katherine C Keller, Michelle McGuire, Jeffrey S Elliott, Melody M Linton, Irene C Arveson, Fatou Tounkara, Ruhi Vasavada, Elizabeth Harnett, Monal Punjabi, Sandra Donkervoort, Jahannaz Dastgir, Meganne E Leach, Anne Rutkowski, Melissa Waite, James Collins, Carsten G Bönnemann, Katherine G Meilleur
Congenital muscular dystrophy (CMD) comprises a rare group of genetic muscle diseases that present at birth or early during infancy. Two common subtypes of CMD are collagen VI-related muscular dystrophy (COL6-RD) and laminin alpha 2-related dystrophy (LAMA2-RD). Traditional outcome measures in CMD include gross motor and mobility assessments, yet significant motor declines underscore the need for valid upper extremity motor assessments as a clinical endpoint. This study validated a battery of upper extremity measures in these two CMD subtypes for future clinical trials...
March 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28046701/su-f-t-89-investigation-of-simultaneous-optimization-of-photon-and-electron-apertures-for-mixed-beam-radiotherapy-based-on-an-academic-case
#8
S Mueller, A Joosten, M K Fix, D Henzen, W Volken, D Frei, Mfm Stampanoni, P Manser
PURPOSE: To estimate the dosimetric potential of mixed beam radiotherapy (MBRT) by using a single process optimizing the shape and weight of photon and electron apertures simultaneously based on Monte Carlo beamlet dose distributions. METHODS: A simulated annealing based direct aperture optimization capable to perform simultaneous optimization was developed to generate treatment plans for MERT, photon-IMRT and MBRT. Both photon and electron apertures are collimated with the photon-MLC and are delivered in a segmented manner...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27904835/a-novel-dominant-d109a-cryab-mutation-in-a-family-with-myofibrillar-myopathy-affects-%C3%AE-b-crystallin-structure
#9
Jakub P Fichna, Anna Potulska-Chromik, Przemysław Miszta, Maria Jolanta Redowicz, Anna M Kaminska, Cezary Zekanowski, Sławomir Filipek
Myofibrillar myopathy (MFM) is a group of inherited muscular disorders characterized by myofibrils dissolution and abnormal accumulation of degradation products. So far causative mutations have been identified in nine genes encoding Z-disk proteins, including αB-crystallin (CRYAB), a small heat shock protein (also called HSPB5). Here, we report a case study of a 63-year-old Polish female with a progressive lower limb weakness and muscle biopsy suggesting a myofibrillar myopathy, and extra-muscular multisystemic involvement, including cataract and cardiomiopathy...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/27890658/magnetic-mapping-of-iron-in-rodent-spleen
#10
Angela R Blissett, Brooke Ollander, Brittany Penn, Dana M McTigue, Gunjan Agarwal
Evaluation of iron distribution and density in biological tissues is important to understand the pathogenesis of a variety of diseases and the fate of exogenously administered iron-based carriers and contrast agents. Iron distribution in tissues is typically characterized via histochemical (Perl's) stains or immunohistochemistry for ferritin, the major iron storage protein. A more accurate mapping of iron can be achieved via ultrastructural transmission electron microscopy (TEM) based techniques, which involve stringent sample preparation conditions...
November 25, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27859463/how-many-procedures-does-it-take-success-of-a-cvs-training-program-for-maternal-fetal-medicine-fellows
#11
Alexis C Gimovsky, Sindy C Moreno, Sara Nicholas, Amanda Roman, Stuart Weiner
OBJECTIVES: To quantify the learning curve for a training program for Maternal Fetal Medicine (MFM) fellows in obtaining successful transvaginal chorionic villus sampling (CVS) results in women with early pregnancy failure (EPF). METHODS: Retrospective observational cohort study of transvaginal CVS and subsequent manual vacuum aspiration (MVA) performed by MFM fellows. CVS samples were sent for karyotype, and products of conception (POC) were sent if CVS sample did not yield a result...
December 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27854214/homozygosity-of-the-dominant-myotilin-c-179c-t-p-ser60phe-mutation-causes-a-more-severe-and-proximal-muscular-dystrophy
#12
Gabrielle Rudolf, Tiina Suominen, Sini Penttilä, Peter Hackman, Anni Evilä, Béatrice Lannes, Andoni Echaniz-Laguna, Guillaume Bierry, Christine Tranchant, Bjarne Udd
Most myotilinopathy patients present with a dominant late onset distal phenotype and myofibrillar pathology, although the first MYOT mutation in a family reported to have LGMD phenotype. We report here a French family affected with a late onset proximal and distal muscle weakness and myofibrillar myopathy on muscle pathology, in which the siblings known to be clinically affected were homozygous for the c.179C>T (p.Ser60Phe) myotilin gene mutation. One subjectively asymptomatic member of the family was heterozygous for this mutation...
May 27, 2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27848152/the-presence-and-impact-of-estrogen-metabolism-on-the-biology-of-triple-negative-breast-cancer
#13
Keely May McNamara, Saki Oguro, Fumiya Omata, Kyoko Kikuchi, Fouzia Guestini, Koyu Suzuki, Yang Yang, Eriko Abe, Hisashi Hirakawa, Kristy A Brown, Ishida Takanori, Noriaki Ohuchi, Hironobu Sasano
PURPOSE: While triple-negative breast cancer (TNBC) is negative for estrogen receptor alpha, a substantial proportion of carcinomas express estrogen receptor beta (ERβ); consequently, estrogen actions and metabolism may be relevant in this cancer subtype. METHODS: A cohort of 81 TNBC patients from Tohoku University Hospital, Japan were characterised with regard to the expression of estrogen receptor beta and enzymes known to modulate levels of estrogens in breast and other tissues (Aromatase, 17-beta- Hydroxysteroid dehydrogenases 1, 2 and 6)...
November 15, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27816572/characterization-of-an-insect-heterodimeric-voltage-gated-sodium-channel-with-unique-alternative-splicing-mode
#14
Xuan-Zhao Jiang, Yu-Xia Pei, Wei Lei, Ke-Yi Wang, Feng Shang, Hong-Bo Jiang, Jin-Jun Wang
Recent discovery of the heterodimeric voltage-gated sodium channels (Nav) in two aphid species, Acyrthosiphon pisum and Myzus persicae, aroused interest in exploring whether this kind of channel is conserved for aphids. Herewith, we aim to provide evidence for the conservation of heterodimeric Navs in aphids and investigate whether they have unique splicing patterns. We found that the only identifiable Nav from Toxoptera citricida consisted of two subunits, forming a heterodimeric Nav, which carried an atypical "DENS" ion selectivity filter and a conventional "MFM" inactivation gate, confirming the heterodimeric Navs' conservation within aphids...
January 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/27732985/retirement-age-ranges-from-clinical-practice-of-maternal-fetal-medicine-physicians
#15
Bradley D Holbrook, Stephen M Petterson, William F Rayburn
Objectives Retirement of "baby boomer" physicians is a matter of growing concern in light of the shortage of certain physician groups. The objectives of this investigation were to define what constitutes a customary retirement age range of maternal-fetal medicine (MFM) physicians and examine how that compares with other obstetrician-gynecologist (ob-gyn) specialists. Study Design This descriptive study was based on American Medical Association Masterfile survey data from 2010 to 2014. Data from the National Provider Identifier were used to correct for upward bias in reporting retirement ages...
October 12, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27727048/inter-segmental-motions-of-the-foot-in-healthy-adults-gender-difference
#16
Dong Yeon Lee, Sang Gyo Seo, Eo Jin Kim, Sung Ju Kim, Kyoung Min Lee, In Ho Choi
BACKGROUND: Multi-segment Foot Models (MFM) have increased in use for both clinical and research applications; however, little is known about the gender differences of inter-segmental motions within the foot and ankle during gait. The objectives of this study were to analyze the gender differences of inter-segmental foot motion during gait in healthy young adults using a MFM with a 15-marker set. METHODS: One hundred healthy adults (50 males, 50 females) between 20 and 35 years of age who had normal function and no radiographic abnormality, were evaluated...
November 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27722330/direct-observation-of-magnetic-vortex-behavior-in-an-ordered-la0-7sr0-3mno3-dot-arrays
#17
Zhenghua Li, Dapeng Dong, Dedi Liu, Jia Liu, Dongping Liu, Xiang Li
Directly observing the magnetic domain behavior in patterned nanostructures is crucial to the investigation into advanced spin-based devices. Herein, we show that the magnetic vortex behavior can be deterministically observed and controlled in highly spin polarized La0.7Sr0.3MnO3 (LSMO) triangular dots by successive in-field magnetic force microscopy (MFM). Imaging the magnetic domains with MFM shows that most of the LSMO dots exhibit magnetic vortex states with a clockwise or anticlockwise "pinwheel" structure for decreasing the demagnetization energy...
October 12, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27680403/quantitative-nanoscale-magnetic-study-of-isolated-diameter-modulated-fecocu-nanowires
#18
Luis Alfredo Rodríguez, Cristina Bran, David Reyes, Eider Berganza, Manuel Vázquez, Christophe Gatel, Etienne Snoeck, Agustina Asenjo
The comprehension of the magnetic configuration in FeCoCu nanowires with a diameter-modulated cylindrical geometry will allow controlling the domain wall motion in this low-dimensional system under the application of magnetic fields and/or the injection of current pulses. Here we perform a quantitative magnetic characterization of isolated diameter-modulated FeCoCu nanowires by combining nanoscale magnetic characterization techniques such as electron holography, magnetic force microscopy, and micromagnetic simulations...
October 6, 2016: ACS Nano
https://www.readbyqxmd.com/read/27677021/the-motor-function-measure-mfm-in-the-facio-scapulo-humeral-dystrophy-fshd-population-description-and-responsiveness
#19
Capucine de Lattre, Pascal Rippert, Dalil Hmaroun, Sabrina Sacconi, Isabelle Poirot, Carole Vuillerot
OBJECTIVE: To assess the applicability and the responsiveness of the motor function measure 1 (MFM) in a facio scapulo humeral dystrophy (FSHD) population. MATERIALS/PATIENTS AND METHODS: It is an observational, retrospective and multicenter, cohort study. MFM data came from the MFM database (see http://www.motor-function-measure.org/data-bank.aspx). Only FSHD patients with at least one MFM-32 were included. The distributions of the MFM scores (total score and MFM D1, D2 and D3 subscores) were analyzed by age...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27677019/innovative-method-for-motor-functions-evaluation-in-sma-type-2-and-3-patients
#20
Carole Vuillerot, D Vincent-Genod, G Thomann, J Coton
OBJECTIVE: Physiotherapists are demanding of valid outcome measures to assess the evolution of their patient's motor functions in order to precisely describe the effects of treatments and the progress of diseases. Hence, several scales such as the motor function measure (MFM) have been developed with the aim to measure, with validity and reproducibility and sensitivity, the motor functions of patients with neuromuscular disease. The originality of our approach is to quantitatively measure the children's motor functions with a low-cost, non-invasive and plug and play technological tool that avoid the uncertain characteristic of human evaluation and increase children's involvement...
September 2016: Annals of Physical and Rehabilitation Medicine
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