bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Cytochrome P450 3A4 has three Major Conformations: New Clues to Drug Recognition by this Promiscuous Enzyme
Authors: Benkaidali Lydia , André François , Moroy Gautier , Tangour Bahoueddine , Maurel François , Petitjean Michel 
Published: July 2017

AbstractWe computed the channels of the 3A4 isoform of the cytochrome P450 3A4 (CYP) on the basis of 24 crystal structures extracted from the Protein Data Bank (PDB). We identified three major conformations (denoted C, O1 and O2) using an enhanced version of the CCCPP software that we developed for the present work, while only two conformations (C and O2) are considered in the literature. We established the flowchart of definition of these three conformations in function of the structural and physicochemical parameters of the ligand. The channels are characterized with qualitative and quantitative parameters, and not only with their surrounding secondary structures as it is usually done in the literature
QUESP and QUEST revisited – fast and accurate quantitative CEST experiments
Authors: Zaiss Moritz , Angelovski Goran , Demetriou Eleni , McMahon Michael T. , Golay Xavier , Scheffler Klaus 
Published: July 2017

PurposeChemical exchange saturation transfer (CEST) NMR or MRI experiments allow detection of low concentrated molecules with enhanced sensitivity via their proton exchange with the abundant water pool. Be it endogenous metabolites or exogenous contrast agents, an exact quantification of the actual exchange rate is required to design optimal pulse sequences and/or specific sensitive agents.MethodsRefined analytical expressions allow deeper insight and improvement of accuracy for common quantification techniques. The accuracy of standard quantification methodologies, such as quantification of exchange rate using varying saturation power or varying saturation time, is improved especially for the case of nonequilibrium initial conditions and weak labeling conditions, meaning the saturation amplitude is smaller than the exchange rate (γB1 < k).ResultsThe improved analytical ‘quantification of exchange rate using varying saturation power/time’ (QUESP/QUEST) equations allow for more accurate exchange rate determination, and provide clear insights on the general principles to execute the experiments and to perform numerical evaluation. The proposed methodology was evaluated on the large‐shift regime of paramagnetic chemical‐exchange‐saturation‐transfer agents using simulated data and data of the paramagnetic Eu(III) complex of DOTA‐tetraglycineamide.ConclusionsThe refined formulas yield improved exchange rate estimation. General convergence intervals of the methods that would apply for smaller shift agents are also discussed. Magn Reson Med 79:1708–1721, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
Urea dimethacrylates functionalized with bisphosphonate/bisphosphonic acid for improved dental materials
Authors: Naz Guven Melek , Akyol Ece , Demir Duman Fatma , Yagci Acar Havva , Karahan Ozlem , Avci Duygu 
Published: July 2017

ABSTRACTIncorporation of bisphosphonate/bisphosphonic acid groups in dental monomer structures should increase interaction of these monomers with dental tissue as these groups have strong affinity for hydroxyapatite. Therefore, new urea dimethacrylates functionalized with bisphosphonate (1a, 1b) and bisphosphonic acid (2a, 2b) groups are synthesized and evaluated for dental applications. Monomers 1a and 1b are synthesized from 2‐isocyanatoethyl methacrylate (IEM) and two bisphosphonated amines (BPA1 and BPA2), prepared as reported elsewhere. Selective dealkylation of the bisphosphonate ester groups of 1a and 1b using trimethylsilyl bromide (TMSBr) gives monomers (2a and 2b) with bisphosphonic acid functionality. X‐ray diffractometer (XRD), Raman spectroscopy, and X‐ray photoelectron spectroscopy (XPS) analyses of monomer‐treated HAP particles show that 2a induces formation of stable monomer‐calcium salts, similar to 10‐methacryloyloxydecyl dihydrogen phosphate (MDP), with higher chemical interaction than 2b. The photopolymerization studies indicate good copolymerizability with commercial dental monomers. In vitro studies on NIH 3T3 mouse embryonic fibroblast cells have clearly shown that the tested monomers (1b and 2b) are not toxic according to the MTT standards. All these properties make these monomers suitable as biocompatible cross‐linkers/adhesives for dental applications. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 3195–3204
Weight reduction by using a formula diet recovers menstruation in obese patients with an ovulatory disorder
Authors: Matsuzaki Toshiya , Douchi Tsutomu , Oki Toshimichi , Ishihara Osamu , Okagaki Ryugo , Kajihara Takeshi , Tamura Midori , Kotsuji Fumikazu , Tajima Kimihisa , Kawano Mika , Ishizuka Bunpei , Irahara Minoru 
Published: July 2017

AbstractAimTo determine the effectiveness of a formula diet in weight reduction and the recovery of menstruation in obese patients with ovulatory disorders.MethodsAfter the enrollment of 39 obese women with ovulatory disorders, they replaced one or two of their three normal meals with a microdiet (MD) (240 kcal/meal) for 24 weeks. Physical, endocrinological, and biochemical tests were conducted before and at 12 and 24 weeks of the study. Of the 39 women enrolled, 26 were not taking clomiphene. They were divided into three groups according to their body weight outcomes and then analyzed for menstruation recovery.ResultsA weight reduction of ≥5% was observed in 31 (81.5%) of the 39 women. There were significant decreases in the body weight and Body Mass Index during the study. Menstruation returned in 18 (69%) of the 26 patients without clomiphene treatment, with the recovery being significantly more prevalent in the groups (totally 81.0%) that exhibited a 5%‐10% weight reduction and ≥10% weight reduction, compared to the group with a <5% weight reduction.ConclusionThe use of a formula diet effectively reduced the patients’ body weight and led to the recovery of menstruation in these obese patients with ovulatory disorders.
Semen cryopreservation as an oncofertility treatment in 122 Japanese men with cancer: A decade‐long study
Authors: Kobayashi Hideyuki , Tamura Koji , Tai Toshihiro , Nagao Koichi , Nakajima Koichi 
Published: July 2017

AbstractPurposeOncofertility is a subspecialty that is concerned with helping patients with cancer preserve their ability to have children in the future. For men, sperm banking is an established way to preserve fertility. The aim was to determine the prefreeze semen characteristics and reproductive outcomes according to cancer type for men who chose semen cryopreservation.MethodsThe records of 122 men with cancer who requested semen cryopreservation at the authors' hospital from 2006 to 2015 were reviewed. The mean patient age when the semen was cryopreserved was 33.6 years.ResultsThe 122 men who banked sperm during the study period had the following types of cancer: testicular (44.3%), hematological (31.1%), digestive (8.2%), and other types (16.4%). The mean sperm concentration by cancer type was 30.5 × 106/mL for testicular, 45.0 × 106/mL for hematological, 40.5 × 106/mL for digestive, and 68.4 × 106/mL for the other types. The mean sperm motility by cancer type was 59.6% for testicular, 50.1% for hematological, 43.0% for digestive, and 44.8% for the other types. For 12 (9.8%) men who used the banked semen, there were five (41.7%) clinical pregnancies.ConclusionSemen cryopreservation is a simple procedure that can be accomplished quickly and can preserve fertility.
Self‐compassion moderates the predictive effects of implicit cognitions on subjective well‐being
Authors: Phillips Wendy J. , Hine Donald W. , Marks Anthony D.G. 
Published: July 2017

AbstractThis study examined whether self‐compassion may regulate the effects of implicit cognitions (automatic and preconscious responses) on the subjective well‐being of Australian adults (N = 132). As hypothesized, self‐compassion moderated the predictive effects of 2 implicit cognitions (positive attention bias and implicit self‐esteem) on 2 indicators of subjective well‐being (life satisfaction and depressive symptoms). Low implicit self‐esteem and weak positive attention bias predicted more depressive symptoms and lower life satisfaction only for participants who were low in self‐compassion. These results extend previous research knowledge by indicating that self‐compassion may not only buffer the impact of explicit (deliberate and conscious) cognitive processes on well‐being but may also regulate the effects of preconscious cognitive processes on mental health outcomes. Theoretical and treatment implications are discussed.
Climate‐relevant behavioral spillover and the potential contribution of social practice theory
Authors: Nash Nick , Whitmarsh Lorraine , Capstick Stuart , Hargreaves Tom , Poortinga Wouter , Thomas Gregory , Sautkina Elena , Xenias Dimitrios 
Published: July 2017

Urgent and radical transition to lower‐carbon forms of society is imperative to limit current and future climate change impacts. Behavioral spillover theory offers a way to catalyze broad lifestyle change from one behavior to another in ways that generate greater impacts than piecemeal interventions. Despite growing policy and research attention, the evidence for behavioral spillover and the processes driving the phenomenon are unclear. The literature is split between studies that provide evidence for positive spillover effects (where an intervention targeting an environmentally conscious behavior leads to an increase in another functionally related behavior) and negative spillover effects (where an intervention targeting an environmentally conscious behavior leads to a decrease in another functionally related behavior). In summarizing findings, particular attention is given to the implications for climate‐relevant behaviors. While few examples of climate‐relevant behavioral spillover exist, studies do report positive and negative spillovers to other actions, as well as spillovers from behavior to support for climate change policy. There is also some evidence that easier behaviors can lead to more committed actions. The potential contribution of social practice theory to understanding spillover is discussed, identifying three novel pathways to behavioral spillover: via carriers of practices, materiality, and through relationships between practices within wider systems of practice. In considering future research directions, the relatively neglected role of social norms is discussed as a means to generate the momentum required for substantial lifestyle change and as a way of circumventing obstructive and intransigent climate change beliefs. WIREs Clim Change 2017, 8:e481. doi: 10.1002/wcc.481This article is categorized under:

Perceptions, Behavior, and Communication of Climate Change > Behavior Change and Responses
A scoring system predicting the clinical course of CLPB defect based on the foetal and neonatal presentation of 31 patients
Authors: Pronicka Ewa , Ropacka‐Lesiak Mariola , Trubicka Joanna , Pajdowska Magdalena , Linke Markus , Ostergaard Elsebet , Saunders Carol , Horsch Sandra , van Karnebeek Clara , Yaplito‐Lee Joy , Distelmaier Felix , Õunap Katrin , Rahman Shamima , Castelle Martin , Kelleher John , Baris Safa , Iwanicka‐Pronicka Katarzyna , Steward Colin G. , Ciara Elżbieta , Wortmann Saskia B. ,   Additional individual contributors
Published: July 2017

AbstractRecently, CLPB deficiency has been shown to cause a genetic syndrome with cataracts, neutropenia, and 3‐methylglutaconic aciduria. Surprisingly, the neurological presentation ranges from completely unaffected to patients with virtual absence of development. Muscular hypo‐ and hypertonia, movement disorder and progressive brain atrophy are frequently reported. We present the foetal, peri‐ and neonatal features of 31 patients, of which five are previously unreported, using a newly developed clinical severity scoring system rating the clinical, metabolic, imaging and other findings weighted by the age of onset. Our data are illustrated by foetal and neonatal videos. The patients were classified as having a mild (n = 4), moderate (n = 13) or severe (n = 14) disease phenotype. The most striking feature of the severe subtype was the neonatal absence of voluntary movements in combination with ventilator dependency and hyperexcitability. The foetal and neonatal presentation mirrored the course of disease with respect to survival (current median age 17.5 years in the mild group, median age of death 35 days in the severe group), severity and age of onset of all findings evaluated. CLPB deficiency should be considered in neonates with absence of voluntary movements, respiratory insufficiency and swallowing problems, especially if associated with 3‐methylglutaconic aciduria, neutropenia and cataracts. Being an important differential diagnosis of hyperekplexia (exaggerated startle responses), we advise performing urinary organic acid analysis, blood cell counts and ophthalmological examination in these patients. The neonatal presentation of CLPB deficiency predicts the course of disease in later life, which is extremely important for counselling.
Canadian Normative Data for Minimal Assessment of Cognitive Function in Multiple Sclerosis
Authors: Walker Lisa A.S. , Marino David , Berard Jason A. , Feinstein Anthony , Morrow Sarah A. , Cousineau Denis 
Published: July 2017

AbstractObjective: The Minimal Assessment of Cognitive Function in Multiple Sclerosis (MACFIMS) is a consensus-based collection of neuropsychological tests that evaluate cognitive functioning in individuals with multiple sclerosis (MS). The tests are typically scored using each respective published test manual, leaving the examiner to make interpretations from norms derived from different American populations. Given demographic differences, this may lead to misinterpretation of findings in Canadians. Our goal was to establish both discrete and regression-based normative data for the MACFIMS based on a largely co-normed Canadian population to allow for improved psychometric interpretation. Methods: MACFIMS data sets were aggregated from across three different Canadian cities (Ottawa, Toronto, and London), yielding a total of 330 healthy control participants from four different studies evaluating cognition in individuals with MS. Given the variety of contributing studies, there was variability in terms of the number of participants completing each measure. Results: Both age-based discrete normative data and demographically adjusted (sex, age, and education) regression-based formulae were established. The demographic variables varied in their contribution to each MACFIMS test in the regression models, predicting 0 to 18% of the variance. Conclusions: Provision of these regression-based formulae will allow for more accurate interpretation of Canadian-derived MACFIMS scores by allowing clinicians to correct for all relevant demographic variables simultaneously, leading to improved clinical decision making for individuals with multiple sclerosis.
Social enterprise to social value chain: Indigenous entrepreneurship transforming the native food industry in Australia
Authors: Logue Danielle , Pitsis Alexandra , Pearce Sonya , Chelliah John 
Published: July 2017

AbstractSharon Winsor was not intent on becoming one of Australia’s leading female Indigenous entrepreneurs, it was rather unexpected. In seeking to escape from an abusive relationship and provide for her family, she turned to her knowledge of native foods and love of ‘wild harvesting’ from her childhood, to develop a thriving business. Her traditional knowledge of harvesting native foods has now led to the creation of products such as lemon myrtle sweet chilli sauce, Davidson plum syrup and cosmetics using ingredients such as Kakadu plum, emu oil, lemon myrtle and wild berry. Sharon now finds herself in a position where increased opportunities for international expansion are demanding increased volume and scale from her rural operations, where she works with Indigenous communities. She faces three key challenges about the future of Indigiearth:1.How can Indigiearth achieve scale while maintaining profitability and social mission?2.How can Indigiearth protect its competitive advantage in the face of increased local agricultural competition, as Indigenous crops increase in value?3.How can traditional knowledge be both shared and protected for community development (jobs and wealth creation) and for future generations?The New Year is close and Sharon already has received large orders coming in from Europe and there is much interest from China and Japan. These decisions will determine how Indigiearth is structured, with whom it needs to partner to develop the Indigenous food industry, and how it will need to work with stakeholders on the issue of traditional knowledge while meeting the growing needs of the company. Sharon has a passion for her native products and wants to preserve the knowledge and respect that goes into her products – the dilemmas she is facing are putting her under immense pressure. She may choose to expand while maintaining the integrity of her business – but how can this be done?
Nonlinear cavity optomechanics with nanomechanical thermal fluctuations
Authors: Leijssen Rick , La Gala Giada R. , Freisem Lars , Muhonen Juha T. , Verhagen Ewold 
Published: July 2017

AbstractAlthough the interaction between light and motion in cavity optomechanical systems is inherently nonlinear, experimental demonstrations to date have allowed a linearized description in all except highly driven cases. Here, we demonstrate a nanoscale optomechanical system in which the interaction between light and motion is so large (single-photon cooperativity C0≈103) that thermal motion induces optical frequency fluctuations larger than the intrinsic optical linewidth. The system thereby operates in a fully nonlinear regime, which pronouncedly impacts the optical response, displacement measurement and radiation pressure backaction. Specifically, we measure an apparent optical linewidth that is dominated by thermo-mechanically induced frequency fluctuations over a wide temperature range, and show that in this regime thermal displacement measurements cannot be described by conventional analytical models. We perform a proof-of-concept demonstration of exploiting the nonlinearity to conduct sensitive quadratic readout of nanomechanical displacement. Finally, we explore how backaction in this regime affects the mechanical fluctuation spectra.
Collagen-derived proline promotes pancreatic ductal adenocarcinoma cell survival under nutrient limited conditions
Authors: Olivares Orianne , Mayers Jared R. , Gouirand Victoire , Torrence Margaret E. , Gicquel Tristan , Borge Laurence , Lac Sophie , Roques Julie , Lavaut Marie-Noëlle , Berthezène Patrice , Rubis Marion , Secq Veronique , Garcia Stéphane , Moutardier Vincent , Lombardo Dominique , Iovanna Juan Lucio , Tomasini Richard , Guillaumond Fabienne , Vander Heiden Matthew G. , Vasseur Sophie 
Published: July 2017

AbstractTissue architecture contributes to pancreatic ductal adenocarcinoma (PDAC) phenotypes. Cancer cells within PDAC form gland-like structures embedded in a collagen-rich meshwork where nutrients and oxygen are scarce. Altered metabolism is needed for tumour cells to survive in this environment, but the metabolic modifications that allow PDAC cells to endure these conditions are incompletely understood. Here we demonstrate that collagen serves as a proline reservoir for PDAC cells to use as a nutrient source when other fuels are limited. We show PDAC cells are able to take up collagen fragments, which can promote PDAC cell survival under nutrient limited conditions, and that collagen-derived proline contributes to PDAC cell metabolism. Finally, we show that proline oxidase (PRODH1) is required for PDAC cell proliferation in vitro and in vivo. Collectively, our results indicate that PDAC extracellular matrix represents a nutrient reservoir for tumour cells highlighting the metabolic flexibility of this cancer.
Nucleolin directly mediates Epstein-Barr virus immune evasion through binding to G-quadruplexes of EBNA1 mRNA
Authors: Lista María José , Martins Rodrigo Prado , Billant Olivier , Contesse Marie-Astrid , Findakly Sarah , Pochard Pierre , Daskalogianni Chrysoula , Beauvineau Claire , Guetta Corinne , Jamin Christophe , Teulade-Fichou Marie-Paule , Fåhraeus Robin , Voisset Cécile , Blondel Marc 
Published: July 2017

AbstractThe oncogenic Epstein-Barr virus (EBV) evades the immune system but has an Achilles heel: its genome maintenance protein EBNA1, which is essential for viral genome maintenance but highly antigenic. EBV has seemingly evolved a system in which the mRNA sequence encoding the glycine-alanine repeats (GAr) of the EBNA1 protein limits its expression to the minimal level necessary for function while minimizing immune recognition. Here, we identify nucleolin (NCL) as a host factor required for this process via a direct interaction with G-quadruplexes formed in GAr-encoding mRNA sequence. Overexpression of NCL enhances GAr-based inhibition of EBNA1 protein expression, whereas its downregulation relieves the suppression of both expression and antigen presentation. Moreover, the G-quadruplex ligand PhenDC3 prevents NCL binding to EBNA1 mRNA and reverses GAr-mediated repression of EBNA1 expression and antigen presentation. Hence the NCL-EBNA1 mRNA interaction is a relevant therapeutic target to trigger an immune response against EBV-carrying cancers.
Resonant driving of a single photon emitter embedded in a mechanical oscillator
Authors: Munsch Mathieu , Kuhlmann Andreas V. , Cadeddu Davide , Gérard Jean-Michel , Claudon Julien , Poggio Martino , Warburton Richard J. 
Published: July 2017

AbstractCoupling a microscopic mechanical resonator to a nanoscale quantum system enables control of the mechanical resonator via the quantum system and vice-versa. The coupling is usually achieved through functionalization of the mechanical resonator, but this results in additional mass and dissipation channels. An alternative is an intrinsic coupling based on strain. Here we employ a monolithic semiconductor system: the nanoscale quantum system is a semiconductor quantum dot (QD) located inside a nanowire. We demonstrate the resonant optical driving of the QD transition in such a structure. The noise spectrum of the resonance fluorescence signal, recorded in the single-photon counting regime, reveals a coupling to mechanical modes of different types. We measure a sensitivity to displacement of 65 fm/$$\sqrt {{\rm{Hz}}} $$

Hz

limited by charge noise in the device. Finally, we use thermal excitation of the different modes to determine the location of the QD within the trumpet, and calculate the contribution of the Brownian motion to the dephasing of the emitter.