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https://www.readbyqxmd.com/read/29236355/b-cell-specific-protein-fcrla-is-expressed-by-plasmacytoid-dendritic-cells-in-humans
#1
Evdokiya Reshetnikova, Sergey Guselnikov, Olga Volkova, Konstantin Baranov, Alexander Taranin, Ludmila Mechetina
BACKGROUND: Fc receptor-like A (FCRLA) is a unique member of a family of Fc receptor like-molecules that lacks a transmembrane region and is an ER-resident protein. In mice and humans, FCRLA has been known as a B cell specific protein. We report here that, in humans, FCRLA is also expressed in a subpopulation of plasmacytoid dendritic cells (pDCs). METHODS: Human peripheral blood mononuclear cells (PBMC), splenocytes, and tonsillar cells were stained for lineage markers followed by fixation/saponin permeabilization and intracellular staining for FCRLA, and then analyzed by flow cytometry with CD123 and CD303 used as pDC markers...
December 13, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29236299/apicomplexa-specific-%C3%AE-hairpin-of-plasmodium-and-toxoplasma-profilins-a-molecular-dynamics-simulation-study
#2
Priyadarsini Kadirvel, Sharmila Anishetty
Profilin is one of the actin-binding proteins that regulate dynamics of actin polymerization. It plays a key role in cell motility and invasion. It also interacts with several other proteins notably through its poly-L-proline (PLP) binding site. Profilin in apicomplexa is characterized by a unique mini-domain consisting of a large β-hairpin extension and an acidic loop which is relatively longer in Plasmodium species. Profilin is essential for the invasive blood stages of Plasmodium falciparum. In the current study, unbound profilins from Plasmodium falciparum (Pf), Toxoplasma gondii (Tg) and Homo sapiens (Hs) were subjected to molecular dynamics (MD) simulations for a timeframe of 100 ns each to understand the conformational dynamics of these proteins...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236236/the-co-evolution-of-bullying-perpetration-homophobic-teasing-and-a-school-friendship-network
#3
Gabriel J Merrin, Kayla de la Haye, Dorothy L Espelage, Brett Ewing, Joan S Tucker, Matthew Hoover, Harold D Green
Bullying and homophobic teasing behaviors affect the lives of many school aged children, often co-occur, and tend to peak in middle school. While bullying and homophobic teasing behaviors are known to be peer group phenomena, studies typically examine the associations at the individual or school levels. An examination of these behaviors at the peer group level can aid in our understanding of the formation and maintenance of peer groups that engage in these forms of aggressive behavior (selection), and the extent to which friends and the peer group impact individual rates of these aggressive behaviors (influence)...
December 13, 2017: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/29236218/the-dangers-of-the-head-down-position-in-patients-with-untreated-pituitary-macroadenomas-case-series-and-review-of-literature
#4
Satoshi Kiyofuji, Avital Perry, Christopher S Graffeo, Caterina Giannini, Michael J Link
PURPOSE: Cavernous sinus syndrome is a rare phenomenon, characterized by simultaneous neuropathies of cranial nerves III-VI. Various pathological processes have been reported as precipitating etiologies, including infection, inflammation, vascular lesions, and neoplasms. PURPOSE: We report a unique case series of cavernous sinus syndrome attributable to prolonged Trendelenburg or prone positioning during non-cranial procedures and review the pertinent literature to enlighten on this rare but catastrophic phenomenon...
December 13, 2017: Pituitary
https://www.readbyqxmd.com/read/29236084/phylodynamic-and-genetic-diversity-of-canine-parvovirus-type-2c-in-taiwan
#5
Yung-Cheng Lin, Shu-Yun Chiang, Hung-Yi Wu, Jih-Hui Lin, Ming-Tang Chiou, Hsin-Fu Liu, Chao-Nan Lin
Canine parvovirus type 2c (CPV-2c) emerged in 2000 and is known for causing a more severe disease than other CPV-2 variants in puppies. In 2015, the emerging CPV-2c variant was isolated in Taiwan and it subsequently became the predominant variant. To trace the evolution of Taiwanese CPV-2c, we compared complete VP2 genes of CPV-2c from Taiwan and sequences obtained from GenBank. The evolutionary rate of CPV-2c was estimated to be 4.586 × 10-4 substitutions per site per year (95% highest posterior density (HPD) was 3...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29236079/unexpected-binding-mode-of-a-potent-indeno-1-2-b-indole-type-inhibitor-of-protein-kinase-ck2-revealed-by-complex-structures-with-the-catalytic-subunit-ck2%C3%AE-and-its-paralog-ck2%C3%AE
#6
Jennifer Hochscherf, Dirk Lindenblatt, Benedict Witulski, Robin Birus, Dagmar Aichele, Christelle Marminon, Zouhair Bouaziz, Marc Le Borgne, Joachim Jose, Karsten Niefind
Protein kinase CK2, a member of the eukaryotic protein kinase superfamily, is associated with cancer and other human pathologies and thus an attractive drug target. The indeno[1,2-b]indole scaffold is a novel lead structure to develop ATP-competitive CK2 inhibitors. Some indeno[1,2-b]indole-based CK2 inhibitors additionally obstruct ABCG2, an ABC half transporter overexpressed in breast cancer and co-responsible for drug efflux and resistance. Comprehensive derivatization studies revealed substitutions of the indeno[1,2-b]indole framework that boost either the CK2 or the ABCG2 selectivity or even support the dual inhibition potential...
December 13, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29236073/reduced-educational-outcomes-persist-into-adolescence-following-mild-iodine-deficiency-in-utero-despite-adequacy-in-childhood-15-year-follow-up-of-the-gestational-iodine-cohort-investigating-auditory-processing-speed-and-working-memory
#7
Kristen L Hynes, Petr Otahal, John R Burgess, Wendy H Oddy, Ian Hay
There is increasing evidence that even mild gestational iodine deficiency (GID) results in adverse neurocognitive impacts on offspring. It's unclear, however, if these persist long-term and whether they can be ameliorated by iodine sufficiency in childhood. We followed a unique cohort (Gestational Iodine Cohort, n = 266) where gestation occurred during a period of mild population iodine deficiency, with children subsequently growing-up in an iodine replete environment. We investigated whether associations between mild GID and reductions in literacy outcomes, observed at age 9-years, persisted into adolescence...
December 13, 2017: Nutrients
https://www.readbyqxmd.com/read/29236031/sacfir-sdn-based-application-aware-centralized-adaptive-flow-iterative-reconfiguring-routing-protocol-for-wsns
#8
Muhammad Aslam, Xiaopeng Hu, Fan Wang
Smart reconfiguration of a dynamic networking environment is offered by the central control of Software-Defined Networking (SDN). Centralized SDN-based management architectures are capable of retrieving global topology intelligence and decoupling the forwarding plane from the control plane. Routing protocols developed for conventional Wireless Sensor Networks (WSNs) utilize limited iterative reconfiguration methods to optimize environmental reporting. However, the challenging networking scenarios of WSNs involve a performance overhead due to constant periodic iterative reconfigurations...
December 13, 2017: Sensors
https://www.readbyqxmd.com/read/29235975/preparing-thin-cross-sections-of-arabidopsis-roots-without-embedding
#9
Naoyuki Sotta, Toru Fujiwara
Here, we describe a method for obtaining thin cross sections of Arabidopsis thaliana roots without fixation and embedding. Roots were grown in pinholes made in a solidified growth medium, and cross sections were prepared without pretreatment. Using this method, we detected unique distributions of two polar-localized proteins-green fluorescent protein (GFP)-tagged BOR1 and NIP5;1-with less sample preparation time than conventional methods. This method is simple, rapid, and yields high-quality cross-section images that are free from artifacts commonly associated with embedding or the sample preparation procedures used in many conventional methods...
December 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/29235974/processing-fixed-and-stored-adipose-derived-stem-cells-for-quantitative-protein-array-assays
#10
Jessica S Sadick, Eric M Darling
Accurately characterizing cellular subpopulations is essential for elucidating the mechanisms underlying normal and pathological biology. Isolation of specific cell types can be accomplished by labeling unique cell-associated proteins with fluorescent antibodies. Cell fixation is commonly used to prepare these samples and allow for long-term storage, but this poses challenges for subsequent protein analysis. We previously established the FITSAR (formaldehyde-fixed intracellular target-sorted antigen retrieval) method, in which protein can be isolated and characterized from fixed, enriched cell subpopulations...
December 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/29235947/betrayal-in-teaching-learning-a-sword-in-the-heart
#11
Nan Russell Yancey
In this article, the human experience of betrayal is explored within teaching-learning, where trust might be expected and the notion of betrayal might seem counterintuitive. To gain insight into this experience, the unique perspectives of an undergraduate student, a graduate student, and a new faculty are considered through the stories they shared with the author about betrayal in teaching-learning. The humanbecoming paradigm provided a unique perspective to view these stories and explore the unlimited possibilities emerging when human dignity and freedom to choose are honored...
January 2018: Nursing Science Quarterly
https://www.readbyqxmd.com/read/29235940/slc9b1-methylation-predicts-fetal-intolerance-of-labor
#12
Anna K Knight, Karen N Conneely, Varun Kilaru, Dawayland Cobb, Jennifer L Payne, Samantha Meilman, Elizabeth J Corwin, Zachary A Kaminsky, Anne L Dunlop, Alicia K Smith
Fetal intolerance of labor is a common indication for delivery by Caesarean section. Diagnosis is based on the presence of category III fetal heart rate tracing, which is an abnormal heart tracing associated with increased likelihood of fetal hypoxia and metabolic acidemia. This study analyzed data from 177 unique women who, during their prenatal visits (7-15 weeks and/or 24-32 weeks) to Atlanta area prenatal care clinics, consented to provide blood samples for DNA methylation (HumanMethylation450 BeadChip) and gene expression (Human HT-12 v4 Expression BeadChip) analyses...
December 13, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29235933/faster-ticking-rate-of-the-epigenetic-clock-is-associated-with-faster-pubertal-development-in-girls
#13
Alexandra M Binder, Camila Corvalan, Verónica Mericq, Ana Pereira, José Luis Santos, Steve Horvath, John Shepherd, Karin B Michels
Epigenetic age is an indicator of biological aging, capturing the impact of environmental and behavioral influences across time on cellular function. Deviance between epigenetic age and chronological age (AgeAccel) is a predictor of health. Pubertal timing has similarly been associated with cancer risk and mortality rate among females. We examined the association between AgeAccel and pubertal timing and adolescent breast composition in the longitudinal Growth and Obesity Cohort Study. AgeAccel was estimated in whole blood using the Horvath method at breast Tanner 2 (B2) and 4 (B4)...
December 13, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29235740/thalassemia-major-and-intermedia-in-patients-older-than-35-years-a-single-center-experience
#14
Liat Shargian-Alon, Oren Pasvolsky, Pia Raanani
BACKGROUND: During the past decades, beta thalassemia major (TM) and beta thalassemia intermedia (TI) have transformed from a universally fatal disease at a young age into a chronic disease. This advancement is attributed to improved chelation therapy as well as enhanced management strategies, with focused attention on disease and treatment-related complications. OBJECTIVES: To describe characteristics of adults with thalassemia as well as treatment modalities, disease and treatment-related complications, and socioeconomic information of the patients...
December 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29235592/effect-of-immobilization-site-on-the-orientation-and-activity-of-surface-tethered-enzymes
#15
Yaoxin Li, Tadeusz L Ogorzalek, Shuai Wei, Xiaoxian Zhang, Pei Yang, Joshua Jasensky, Charles L Brooks, E Neil G Marsh, Zhan Chen
Tethering peptides and proteins to abiotic surfaces has the potential to create biomolecule-functionalized surfaces with useful properties. Commonly used methods of immobilization lack control over the orientation in which biological molecules are covalently or physically bound to the surface, leading to sub-optimal materials. Here we use an engineered beta-galactosidase that can be chemically immobilized on a surface with a well-defined orientation through unique surface-accessible cysteine residues. A combined study using sum frequency generation (SFG) vibrational spectroscopy and coarse grained molecular dynamics (MD) simulations was performed to determine the effects of enzyme immobilization site and abiotic surface chemistry on enzyme surface orientation, surface coverage, and catalytic activity...
December 13, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29235545/one-plasmid-double-expression-his-tag-system-for-rapid-production-and-easy-purification-of-ms2-phage-like-particles
#16
Pavel Mikel, Petra Vasickova, Petr Kralik
MS2 phage-like particles (MS2 PLP) are artificially constructed pseudo-viral particles derived from bacteriophage MS2. They are able to carry a specific single stranded RNA (ssRNA) sequence of choice inside their capsid, thus protecting it against the effects of ubiquitous nucleases. Such particles are able to mimic ssRNA viruses and, thus, may serve as the process control for molecular detection and quantification of such agents in several kinds of matrices, vaccines and vaccine candidates, drug delivery systems, and systems for the display of immunologically active peptides or nanomachines...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235521/infrared-actuation-induced-simultaneous-reconfiguration-of-surface-color-and-morphology-for-soft-robotics
#17
Seyedali Banisadr, Jian Chen
Cephalopods, such as cuttlefish, demonstrate remarkable adaptability to the coloration and texture of their surroundings by modulating their skin color and surface morphology simultaneously, for the purpose of adaptive camouflage and signal communication. Inspired by this unique feature of cuttlefish skins, we present a general approach to remote-controlled, smart films that undergo simultaneous changes of surface color and morphology upon infrared (IR) actuation. The smart film has a reconfigurable laminated structure that comprises an IR-responsive nanocomposite actuator layer and a mechanochromic elastomeric photonic crystal layer...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235515/discrete-and-continuous-character-based-disparity-analyses-converge-to-the-same-macroevolutionary-signal-a-case-study-from-captorhinids
#18
Marco Romano, Neil Brocklehurst, Jörg Fröbisch
The relationship between diversity and disparity during the evolutionary history of a clade provides unique insights into evolutionary radiations and the biological response to bottlenecks and to extinctions. Here we present the first comprehensive comparison of diversity and disparity of captorhinids, a group of basal amniotes that is important for understanding the early evolution of high-fiber herbivory. A new fully resolved phylogeny is presented, obtained by the inclusion of 31 morphometric characters...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235495/identification-of-nonsense-mediated-mrna-decay-pathway-as-a-critical-regulator-of-p53-isoform-%C3%AE
#19
Lauren E Cowen, Yi Tang
Human TP53 gene encodes the tumor suppressor p53 and, via alternative splicing, the p53β and γ isoforms. Numerous studies have shown that p53β/γ can modulate p53 functions and are critically involved in regulation of cellular response to stress conditions. However, it is not fully understood how the β and γ isoforms are regulated following splicing. Using gene targeting and RNAi, we showed that depletion of the nonsense-mediated mRNA decay (NMD) factor SMG7 or UPF1 significantly induced p53β but had minimal effect on p53γ...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235440/leveraging-multi-layer-imager-detector-design-to-improve-low-dose-performance-for-megavoltage-cone-beam-computed-tomography
#20
Yue-Houng Hu, Joerg Rottmann, Rony Fueglistaller, Marios E Myronakis, Adam Wang, Pascal Huber, Daniel Shedlock, Daniel Morf, Paul Baturin, Josh M Star-Lack, Ross I Berbeco
While megavoltage (MV) cone-beam computed tomography (CBCT) using an electronic portal imaging device (EPID) provides many advantages over kilovoltage (kV) CBCT, clinical adoption is limited by its high doses. Multi-layer imager (MLI) EPIDs increase DQE(0) while maintaining high resolution. However, even well-designed, high-performance MLIs suffer from increased electronic noise from each readout, degrading low-dose image quality. To improve low-dose performance, shift-and-bin addition (ShiBA) imaging is proposed, leveraging the unique architecture of the MLI...
December 13, 2017: Physics in Medicine and Biology
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