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https://www.readbyqxmd.com/read/28432222/low-expression-of-hexokinase-2-is-associated-with-false-negative-fdg-positron-emission-tomography-in-multiple-myeloma
#1
Leo Rasche, Edgardo Angtuaco, James E McDonald, Amy Buros, Caleb Stein, Charlotte Pawlyn, Sharmilan Thanendrarajan, Carolina Schinke, Rohan Samant, Shmuel Yaccoby, Brian Walker, Joshua Epstein, Maurizio Zangari, Frits van Rhee, Tobias Meissner, Hartmut Goldschmidt, Kari Hemminki, Richard Houlston, Bart Barlogie, Faith E Davies, Gareth J Morgan, Niels Weinhold
18F-Fluorodeoxyglucose (FDG) positron emission tomography (PET) and diffusion weighted magnetic resonance imaging with background signal suppression (DWIBS) are two powerful functional imaging modalities in the evaluation of the malignant plasma cell (PC) disease multiple myeloma (MM). Preliminary observations have suggested that MM patients with extensive disease according to DWIBS may be reported as being disease-free on FDG-PET ("PET-false-negative"). The aim of this study was to describe the proportion of PET-false-negativity in a representative set of 227 newly diagnosed MM patients with simultaneous assessment of FDG-PET and DWIBS, and to identify tumor-intrinsic features associated with this pattern...
April 21, 2017: Blood
https://www.readbyqxmd.com/read/28432088/gps-and-paediatric-oncology-palliative-care-a-q-methodological-study
#2
Sue Neilson, Faith Gibson, Stephen Jeffares, Sheila M Greenfield
OBJECTIVE: This mixed-methods study set in the West Midlands region of the UK demonstrates the effectiveness of Q methodology in examining general practitioners' (GPs') perception of their role in children's oncology palliative care. METHODS: Using data obtained from the analysis of semistructured interviews with GPs who had cared for a child receiving palliative care at home and bereaved parents, 50 statements were identified as representative of the analysis findings...
April 21, 2017: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/28431927/membrane-insertion-of-f0-c-subunit-of-f0f1-atpase-depends-on-glycolipozyme-mpiase-and-is-stimulated-by-yidc
#3
Hanako Nishikawa, Masaru Sasaki, Ken-Ichi Nishiyama
The F0 c subunit of F0F1 ATPase (F0-c) possesses two membrane-spanning stretches with N- and C-termini exposed to the periplasmic (extracellular) side of the cytoplasmic membrane of E. coli. Although F0-c insertion has been extensively analyzed in vitro by means of protease protection assaying, it is unclear whether such assays allow elucidation of the insertion process faithfully, since the membrane-protected fragment, an index of membrane insertion, is a full-length polypeptide of F0-c, which is the same as the protease-resistant conformation without membrane insertion...
April 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28431262/immunologic-approaches-for-the-treatment-of-multiple-myeloma
#4
REVIEW
Leo Rasche, Niels Weinhold, Gareth J Morgan, Frits van Rhee, Faith E Davies
The FDA approval of two monoclonal antibodies in 2015has heralded a new era of targeted immunotherapies for multiple myeloma (MM). In this review we discuss the recent approaches using different immunological components to treat MM. In particular, we review current monoclonal antibody based therapies, engineered T- and NK cell products, 'off-target' immunomodulation, and strategies utilizing allogeneic cell transplantation in MM. We discuss how an immunologic approach offers promise for the treatment of this genetically heterogeneous disease, and how patients with acquired drug resistance may particularly benefit from these therapies...
April 6, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28429936/electron-decoupling-with-dynamic-nuclear-polarization-in-rotating-solids
#5
Edward P Saliba, Erika L Sesti, Faith J Scott, Brice J Albert, Eric J Choi, Nicholas Alaniva, Chukun Gao, Alexander B Barnes
Dynamic nuclear polarization (DNP) can enhance NMR sensitivity by orders of magnitude by transferring spin polarization from electron paramagnetic resonance (EPR) to NMR. However, paramagnetic DNP polarizing agents can have deleterious effects on NMR signals. Electron spin decoupling can mitigate these paramagnetic relaxation effects. We demonstrate electron decoupling experiments in conjunction with DNP and magic angle spinning (MAS) NMR spectroscopy. Following a DNP and spin diffusion period, the microwave irradiation frequency is quickly tuned on-resonance with electrons on the DNP polarizing agent...
April 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28429004/binding-site-opening-by-loop-c-shift-and-chloride-ion-pore-interaction-in-the-gabaa-receptor-model
#6
M A Michałowski, S Kraszewski, J W Mozrzymas
GABAA receptors (GABAARs) are crucial in mediating inhibition in the adult mammalian brain. Although the kinetics of this receptor has been extensively studied, the molecular picture of interactions occurring at various channel conformations remains elusive. While electrophysiology combined with mutagenesis sheds light on the role of specific residues, ultrastructural studies reveal static structures which, in the case of GABAARs, are limited to the β3 homomer. To take advantage of the newest crystal structures of cys-loop receptors, a homology model of α1β2γ2 GABAAR in the unbound closed state was built using a template of the homomeric glycine receptor in the closed state...
April 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28428191/the-role-of-minimal-residual-disease-testing-in-myeloma-treatment-selection-and-drug-development-current-value-and-future-applications
#7
Kenneth C Anderson, Daniel Auclair, Gary J Kelloff, Caroline C Sigman, Herve Avet-Loiseau, Ann T Farrell, Nicole J Gormley, Shaji K Kumar, Ola Landgren, Nikhil C Munshi, Michele Cavo, Faith E Davies, Alessandra Di Bacco, Jennifer S Dickey, Steven I Gutman, Howard R Higley, Mohamad A Hussein, J Milburn Jessup, Ilan R Kirsch, Richard F Little, Robert D Loberg, Jens G Lohr, Lata Mukundan, James L Omel, Trevor J Pugh, Gregory H Reaman, Michael D Robbins, A Kate Sasser, Nancy Valente, Elena Zamagni
Treatment of myeloma has benefited from the introduction of more effective and better tolerated agents, improvements in supportive care, better understanding of disease biology, revision of diagnostic criteria, and new sensitive and specific tools for disease prognostication and management. Assessment of minimal residual disease (MRD) in response to therapy is one of these tools, as longer progression-free survival (PFS) is seen consistently among patients who have achieved MRD negativity. Current therapies lead to unprecedented frequency and depth of response, and next generation flow and sequencing methods to measure MRD in bone marrow are in use and being developed with sensitivities in the range of 10(-5)‒10(-6) cells...
April 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28427158/the-varied-distribution-and-impact-of-ras-codon-and-other-key-dna-alterations-across-the-translocation-cyclin-d-subgroups-in-multiple-myeloma
#8
Caleb K Stein, Charlotte Pawlyn, Shweta Chavan, Leo Rasche, Niels Weinhold, Adam Corken, Amy Buros, Pieter Sonneveld, Graham H Jackson, Ola Landgren, Tariq Mughal, Jie He, Bart Barlogie, P Leif Bergsagel, Faith E Davies, Brian A Walker, Gareth J Morgan
We examined a set of 805 cases that underwent DNA sequencing using the FoundationOne Heme (F1H) targeted sequencing panel and gene expression profiling. Known and likely variant calls from the mutational data were analyzed for significant associations with gene expression defined translocation cyclin D (TC) molecular subgroups. The spectrum of KRAS, NRAS, and BRAF codon mutations varied across subgroups with NRAS mutations at Q61 codon being common in hyperdiploid (HRD) and t(11;14) myeloma while being rare in MMSET and MAF...
February 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425003/validation-of-the-persian-version-of-the-daily-spiritual-experiences-scale-dses-in-pregnant-women-a-proper-tool-to-assess-spirituality-related-to-mental-health
#9
Mohsen Saffari, Hossein Amini, Zarindokht Sheykh-Oliya, Amir H Pakpour, Harold G Koenig
Assessing spirituality in healthy pregnant women may lead to supportive interventions that will improve their care. A psychometrically valid measure such as the Daily Spiritual Experiences Scale (DSES) may be helpful in this regard. The current study sought to adapt a Persian version of DSES for use in pregnancy. A total of 377 pregnant women were recruited from three general hospitals located in Tehran, Iran. Administered scales were the DSES, Duke University Religion Index, Santa Clara Strength of Religious Faith scale, and Depression Anxiety Stress Scale, as well as demographic measures...
April 19, 2017: Journal of Religion and Health
https://www.readbyqxmd.com/read/28424704/draco-stem-an-automatic-tool-to-generate-high-quality-3d-meshes-of-shoot-apical-meristem-tissue-at-cell-resolution
#10
Guillaume Cerutti, Olivier Ali, Christophe Godin
Context: The shoot apical meristem (SAM), origin of all aerial organs of the plant, is a restricted niche of stem cells whose growth is regulated by a complex network of genetic, hormonal and mechanical interactions. Studying the development of this area at cell level using 3D microscopy time-lapse imaging is a newly emerging key to understand the processes controlling plant morphogenesis. Computational models have been proposed to simulate those mechanisms, however their validation on real-life data is an essential step that requires an adequate representation of the growing tissue to be carried out...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28420788/reconstructing-the-spectrotemporal-modulations-of-real-life-sounds-from-fmri-response-patterns
#11
Roberta Santoro, Michelle Moerel, Federico De Martino, Giancarlo Valente, Kamil Ugurbil, Essa Yacoub, Elia Formisano
Ethological views of brain functioning suggest that sound representations and computations in the auditory neural system are optimized finely to process and discriminate behaviorally relevant acoustic features and sounds (e.g., spectrotemporal modulations in the songs of zebra finches). Here, we show that modeling of neural sound representations in terms of frequency-specific spectrotemporal modulations enables accurate and specific reconstruction of real-life sounds from high-resolution functional magnetic resonance imaging (fMRI) response patterns in the human auditory cortex...
April 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28419446/from-autonomy-to-divinity-the-cultural-socialization-of-moral-reasoning-in-an-evangelical-christian-community
#12
Allison DiBianca Fasoli
This study examined moral reasoning in parent-child conversations within a U.S. evangelical Christian community. The goal was to identify social-communicative processes that may promote the development of Divinity in children's moral reasoning. Sixteen parent-child dyads (6-9 years old) discussed hypothetical moral vignettes about failures to help peers in need. Analyses revealed that Divinity typically co-occurred with Autonomy in these conversations and that such co-occurrences typically happened through three distinct social-communicative processes, labeled "align," "scaffold," and "counter...
April 17, 2017: Child Development
https://www.readbyqxmd.com/read/28419126/availability-and-affordability-of-antimalarial-and-antibiotic-medicines-in-malawi
#13
Felix Khuluza, Lutz Heide
BACKGROUND: Availability and affordability of medicines are key determinants of universal health coverage, yet achieving them presents a major challenge especially in low-income countries. We here present an analysis of availability and prices of antimalarial and antibiotic medicines in public, faith-based and private health facilities in Malawi. Medicines are provided free of charge in the public health care system of Malawi. In contrast, facilities of the Christian Health Association of Malawi (CHAM) usually charge their patients for medicines, as do private for-profit facilities...
2017: PloS One
https://www.readbyqxmd.com/read/28418591/a-hypomorphic-egfr-allele-does-not-ameliorate-the-palmoplantar-keratoderma-caused-by-slurp1-deficiency
#14
Christopher M Allan, Deanna Tran, Yiping Tu, Patrick J Heizer, Lorraine C Young, Loren G Fong, Anne P Beigneux, Stephen G Young
Mutations in SLURP1, a secreted protein of keratinocytes, cause a palmoplantar keratoderma (PPK) known as mal de Meleda. Slurp1 deficiency in mice faithfully recapitulates the human disease, with increased keratinocyte proliferation and thickening of the epidermis on the volar surface of the paws. There has long been speculation that SLURP1 serves as a ligand for a receptor that regulates keratinocyte growth and differentiation. We were intrigued that mutations leading to increased signaling through the epidermal growth factor receptor (EGFR) cause PPK...
April 18, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28415769/aurora-kinase-b-dependent-phosphorylation-of-53bp1-is-required-for-resolving-merotelic-kinetochore-microtubule-attachment-errors-during-mitosis
#15
Haibo Wang, Bin Peng, Raj K Pandita, David A Engler, Risë K Matsunami, Xingzhi Xu, Pavana M Hegde, Brian E Butler, Tej K Pandita, Sankar Mitra, Bo Xu, Muralidhar L Hegde
Defects in resolving kinetochore-microtubule attachment mistakes during mitosis is linked to chromosome instability associated with carcinogenesis as well as resistance to cancer therapy. Here we report for the first time that tumor suppressor p53-binding protein 1 (53BP1) is phosphorylated at serine 1342 (S1342) by Aurora kinase B both in vitro and in human cells, which is required for optimal recruitment of 53BP1 at kinetochores. Furthermore, 53BP1 staining normally localized on the outer kinetochore, extended to the whole kinetochore when it is merotelically-attached, in concert with mitotic centromere-associated kinesin...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415234/global-relativistic-effects-in-chaotic-scattering
#16
Juan D Bernal, Jesús M Seoane, Miguel A F Sanjuán
The phenomenon of chaotic scattering is very relevant in different fields of science and engineering. It has been mainly studied in the context of Newtonian mechanics, where the velocities of the particles are low in comparison with the speed of light. Here, we analyze global properties such as the escape time distribution and the decay law of the Hénon-Heiles system in the context of special relativity. Our results show that the average escape time decreases with increasing values of the relativistic factor β...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28414960/calibration-of-on-chip-cell-electroporation-by-a-pseudo-volumetric-uptake-model
#17
Kisoo Kim, Won Gu Lee
Most conventional methods for assessing uptake of exogenous molecules and nanomaterials into cells use the projected two-dimensional (2D) area of uptake intensity into individual cells. However, since most cells have a three-dimensional (3D) spherical shape, volumetric uptake cannot be quantified accurately using 2D area analysis. Here, we present a method for calibrating the electroporative uptake intensity of small molecules by using a novel predictable spherical volume (PSV) model, which is more accurate and quantitative than previous methods...
April 10, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28414882/the-effect-of-a-faith-community-nurse-network-and-public-health-collaboration-on-hypertension-prevention-and-control
#18
Jennifer Cooper, Wendy Zimmerman
BACKGROUND: As part of the Association of State and Territorial Health Official's Million Hearts State Learning Collaborative in 2014 and 2015, Washington County, Maryland formed a collaboration between the local health department, health system and faith community nurse network to address the undiagnosed and uncontrolled hypertension in the county. OBJECTIVES: Data were analyzed to determine the effect of a faith community nursing intervention of teaching blood pressure self-monitoring and coaching blood pressure and lifestyle changes in the at-risk and hypertensive population...
April 17, 2017: Public Health Nursing
https://www.readbyqxmd.com/read/28414783/acceptability-and-feasibility-of-early-infant-male-circumcision-for-hiv-prevention-in-malawi
#19
Charles Chilimampunga, Simeon Lijenje, Judith Sherman, Kelvin Nindi, Webster Mavhu
BACKGROUND: Voluntary medical male circumcision (VMMC) has been successfully implemented in 14 countries as an additional HIV prevention intervention. As VMMC programs mature in most countries, the focus is now on how to sustain the HIV prevention gains realised from VMMC. As part of preparations for the sustainability phase, countries are either piloting or preparing to pilot early infant male circumcision (EIMC). This qualitative study explored the acceptability and feasibility of EIMC in Malawi in order to inform pilot implementation...
2017: PloS One
https://www.readbyqxmd.com/read/28411481/a-re-evaluation-of-the-final-step-of-vanillin-biosynthesis-in-the-orchid-vanilla-planifolia
#20
Hailian Yang, Jaime Barros-Rios, Galina Kourteva, Xiaolan Rao, Fang Chen, Hui Shen, Chenggang Liu, Andrzej Podstolski, Faith Belanger, Daphna Havkin-Frenkel, Richard A Dixon
A recent publication describes an enzyme from the vanilla orchid Vanilla planifolia with the ability to convert ferulic acid directly to vanillin. The authors propose that this represents the final step in the biosynthesis of vanillin, which is then converted to its storage form, glucovanillin, by glycosylation. The existence of such a "vanillin synthase" could enable biotechnological production of vanillin from ferulic acid using a "natural" vanilla enzyme. The proposed vanillin synthase exhibits high identity to cysteine proteases, and is identical at the protein sequence level to a protein identified in 2003 as being associated with the conversion of 4-coumaric acid to 4-hydroxybenzaldehyde...
April 12, 2017: Phytochemistry
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