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https://www.readbyqxmd.com/read/28214886/adenovirus-vector-harboring-the-hbcag-and-tripeptidyl-peptidase-ii-genes-induces-potent-cellular-immune-responses-in-vivo
#1
Quanhui Tan, Siyuan Ma, Jianjun Hu, Xiaohua Chen, Yongsheng Yu, Zhenghao Tang, Guoqin Zang
BACKGROUND: Chronic hepatitis B virus (HBV) infection is associated with a weak but specific cellular immune response of the host to HBV. Tripeptidyl peptidaseⅡ (TPPⅡ), an intracellular macromolecule and proteolytic enzyme, plays an important complementary and compensatory role for the proteasome during viral protein degradation and major histocompatibility complex class I antigen presentation by inducing a specific cellular immune response in vivo. Based on a previous study, we aimed to explore the role of MHC class I antigen presentation in vivo and the mechanisms that may be involved...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214736/breaking-the-population-barrier-by-single-cell-analysis-one-host-against-one-pathogen
#2
REVIEW
Erez Mills, Roi Avraham
Most of our understanding of the host-bacterium interaction has come from studies of bulk populations. In reality, highly adaptable and dynamic host cells and bacteria engage in complex, diverse interactions. This complexity necessarily limits the depth of understanding that can be gained with bulk population measurements. Here, we will review the merit of single cell analysis to characterize this diversity that can trigger heterogeneous outcomes. We will discuss heterogeneity of bacterial and host populations, differences in host microenvironments, technological advances that facilitate the analysis of rare subpopulations, and the potential relevance of these subpopulations to infection outcomes...
February 16, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28214586/mango-kernel-starch-gum-composite-films-physical-mechanical-and-barrier-properties
#3
Anjum Nawab, Feroz Alam, Muhammad Abdul Haq, Zubala Lutfi, Abid Hasnain
Composite films were developed by the casting method using mango kernel starch (MKS) and guar and xanthan gums. The concentration of both gums ranged from 0% to 30% (w/w of starch; db). Mechanical properties, oxygen permeability (OP), water vapor permeability (WVP), solubility in water and color parameters of composite films were evaluated. The crystallinity and homogeneity between the starch and gums were also evaluated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The scanning electron micrographs showed homogeneous matrix, with no signs of phase separation between the components...
February 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28214438/stepwise-dynamics-of-an-anionic-micellar-film-formation-of-crown-lenses
#4
Jongju Lee, Alex Nikolov, Darsh Wasan
We studied the stepwise thinning of a microscopic circular foam film formed from an anionic micellar solution of sodium dodecyl sulfate (SDS). The foam film formed from the SDS micellar solution thins in a stepwise manner by the formation and expansion of a dark spot(s) of one layer less than the film thickness. During the last stages of film thinning (e.g., a film with one micellar layer), the dark spot expansion occurs via two steps. Initially, a small dark circular spot inside a film of several microns in size is formed, which expands at a constant rate...
January 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28214043/-i-just-want-to-be-normal-a-qualitative-study-of-pregnant-women-s-blogs-who-present-themselves-as-overweight-or-obese
#5
Lovisa Lingetun, Madicken Fungbrant, Ing-Marie Claesson, Christina Baggens
OBJECTIVE: to describe what pregnant women who present themselves as overweight or obese write about their pregnancy in their blogs. SETTING: Swedish private blogs. DESIGN: a qualitative study, using 13 Internet blogs as the source of data. Google was used to find the blogs. The blog content was analysed using thematic analysis. FINDINGS: three main themes were identified: Pregnancy as an excuse, Perspectives on the pregnant body and Becoming a mother...
January 31, 2017: Midwifery
https://www.readbyqxmd.com/read/28213588/a-differential-autophagy-dependent-response-to-dna-double-strand-brakes-in-bone-marrow-mesenchymal-stem-cells-from-sporadic-als-patients
#6
Shane Wald-Altman, Edward Pichinuk, Or Kakhlon, Miguel Weil
Amyotrophic Lateral Sclerosis (ALS) is an incurable motor neurodegenerative disease caused by a diversity of genetic and environmental factors leading to neuromuscular degeneration and pathophysiological implications in non-neural systems. Our previous work showed abnormal transcriptional expression levels of biomarker genes in non-neuronal cell samples from ALS patients. The same genes proved to be differentially expressed in brain, spinal cord and muscle of the SOD1(G93A) ALS mouse model. These observations support the pathophysiological relevance of the ALS biomarkers discovered in human mesenchymal stem cells (hMSC) isolated from bone marrow samples of ALS patients (ALS-hMSC)...
February 16, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28213521/signalling-adaptor-shcd-suppresses-erk-phosphorylation-distal-to-the-ret-and-trk-neurotrophic-receptors
#7
Melanie K B Wills, Ava Keyvani Chahi, Hayley R Lau, Manali Tilak, Brianna Guild, Laura A New, Peihua Lu, Keévin Jacquet, Susan O Meakin, Nicolas Bisson, Nina Jones
Proteins of the Shc family are typically involved in signal transduction events involving Ras/MAPK and PI3K/Akt pathways. In the nervous system, they function proximal to the neurotrophic factors that regulate cell survival, differentiation, and neuron-specific characteristics. The least-characterized homolog, ShcD, is robustly expressed in the developing and mature nervous system, but its contributions to neural cell circuitry are largely uncharted. We now report that ShcD binds to active Ret, TrkA, and TrkB neurotrophic factor receptors predominantly via its phosphotyrosine binding (PTB) domain...
February 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28213501/immature-lymphocytes-inhibit-rag1-and-rag2-transcription-and-v-d-j-recombination-in-response-to-dna-double-strand-breaks
#8
Megan R Fisher, Adrian Rivera-Reyes, Noah B Bloch, David G Schatz, Craig H Bassing
Mammalian cells have evolved a common DNA damage response (DDR) that sustains cellular function, maintains genomic integrity, and suppresses malignant transformation. In pre-B cells, DNA double-strand breaks (DSBs) induced at Igκ loci by the Rag1/Rag2 (RAG) endonuclease engage this DDR to modulate transcription of genes that regulate lymphocyte-specific processes. We previously reported that RAG DSBs induced at one Igκ allele signal through the ataxia telangiectasia mutated (ATM) kinase to feedback-inhibit RAG expression and RAG cleavage of the other Igκ allele...
February 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28213464/cilia-in-left-right-symmetry-breaking
#9
Kyosuke Shinohara, Hiroshi Hamada
Visceral organs of vertebrates show left-right (L-R) asymmetry with regard to their position and morphology. Cilia play essential role in generating L-R asymmetry. A number of genes required for L-R asymmetry have now been identified in vertebrates, including human, many of which contribute to the formation and motility of cilia. In the mouse embryo, breaking of L-R symmetry occurs in the ventral node, where two types of cilia (motile and immotile) are present. Motile cilia are located at the central region of the node, and generate a leftward fluid flow...
February 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28213075/-quality-and-efficiency-of-care-an-obligation-towards-citizens
#10
Catherine Ollivet
Certified patients' associations in health care work daily to represent and defend users of the health care system. The involvement of patients in therapeutic education programmes is another way of favouring a care approach centred on the patient. There remain, however, many areas which need to be improved to avoid patients and their families experiencing breaks in their care pathway, in particular through the development of community-hospital networks and collaboration between caregivers, patients and patients' associations...
January 2017: Soins; la Revue de Référence Infirmière
https://www.readbyqxmd.com/read/28212785/the-role-of-driver-nodes-in-managing-epileptic-seizures-application-of-kuramoto-model
#11
Ali Mohseni, Shahriar Gharibzadeh, Fatemeh Bakouie
Synchronization is an important global phenomenon which could be found in a wide range of complex systems such as brain or electronic devices. However, in some circumstances the synchronized states are not desirable for the system and should be suppressed. For example, excessively synchronized activities in the brain network could be the root of neuronal disorders like epileptic seizures. According to the controllability theory of the complex networks, a minimum set of driver nodes has the ability to control the entire system...
February 15, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28212718/a-speech-and-psychological-profile-of-treatment-seeking-adolescents-who-stutter
#12
Lisa Iverach, Robyn Lowe, Mark Jones, Susan O'Brian, Ross G Menzies, Ann Packman, Mark Onslow
PURPOSE: The purpose of this study was to evaluate the relationship between stuttering severity, psychological functioning, and overall impact of stuttering, in a large sample of adolescents who stutter. METHOD: Participants were 102 adolescents (11-17 years) seeking speech treatment for stuttering, including 86 boys and 16 girls, classified into younger (11-14 years, n=57) and older (15-17 years, n=45) adolescents. Linear regression models were used to evaluate the relationship between speech and psychological variables and overall impact of stuttering...
March 2017: Journal of Fluency Disorders
https://www.readbyqxmd.com/read/28212687/balancing-the-health-workforce-breaking-down-overall-technical-change-into-factor-technical-change-for-labour-an-empirical-application-to-the-dutch-hospital-industry
#13
Jos L T Blank, Bart L van Hulst
BACKGROUND: Well-trained, well-distributed and productive health workers are crucial for access to high-quality, cost-effective healthcare. Because neither a shortage nor a surplus of health workers is wanted, policymakers use workforce planning models to get information on future labour markets and adjust policies accordingly. A neglected topic of workforce planning models is productivity growth, which has an effect on future demand for labour. However, calculating productivity growth for specific types of input is not as straightforward as it seems...
February 17, 2017: Human Resources for Health
https://www.readbyqxmd.com/read/28212522/taking-up-the-cudgels-for-the-traditional-reactive-oxygen-and-nitrogen-species-detection-assays-and-their-use-in-the-cardiovascular-system
#14
REVIEW
Andreas Daiber, Matthias Oelze, Sebastian Steven, Swenja Kröller-Schön, Thomas Münzel
Reactive oxygen and nitrogen species (RONS such as H2O2, nitric oxide) confer redox regulation of essential cellular functions (e.g. differentiation, proliferation, migration, apoptosis), initiate and catalyze adaptive stress responses. In contrast, excessive formation of RONS caused by impaired break-down by cellular antioxidant systems and/or insufficient repair of the resulting oxidative damage of biomolecules may lead to appreciable impairment of cellular function and in the worst case to cell death, organ dysfunction and severe disease phenotypes of the entire organism...
February 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28212413/scarless-deletion-of-up-to-seven-methyl-accepting-chemotaxis-genes-with-an-optimized-method-highlights-key-function-of-chem-in-salmonella-typhimurium
#15
Stefanie Hoffmann, Christiane Schmidt, Steffi Walter, Jennifer K Bender, Roman G Gerlach
Site-directed scarless mutagenesis is an essential tool of modern pathogenesis research. We describe an optimized two-step protocol for genome editing in Salmonella enterica serovar Typhimurium to enable multiple sequential mutagenesis steps in a single strain. The system is based on the λ Red recombinase-catalyzed integration of a selectable antibiotics resistance marker followed by replacement of this cassette. Markerless mutants are selected by expressing the meganuclease I-SceI which induces double-strand breaks in bacteria still harboring the resistance locus...
2017: PloS One
https://www.readbyqxmd.com/read/28212373/poly-adp-ribose-polymerase-1-mrna-levels-strongly-correlate-with-the-prognosis-of-myelodysplastic-syndromes
#16
P Diamantopoulos, K Zervakis, P Zervakis, M Sofotasiou, T Vassilakopoulos, I Kotsianidis, A Symeonidis, V Pappa, A Galanopoulos, E Solomou, E Kodandreopoulou, V Papadopoulou, P Korkolopoulou, M Mantzourani, G Kyriakakis, N-A Viniou
Poly (ADP-ribose) polymerase 1 (PARP-1) has a central role in the repair of DNA breaks and is a promising treatment target in malignancy. We measured PARP1 mRNA levels by a SYBR-green-based PCR in the bone marrow of 74 patients with myelodysplastic syndrome (MDS) and correlated them to their demographic, hematologic and prognostic characteristics. The median PARP1 mRNA levels were correlated to the type of MDS (2008/2016 WHO classification, P=0.005) and to the IPSS score (P=0.002). A correlation was also found with the IPSS-R score (P=0...
February 17, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28212217/a-guide-to-networking-for-introverts-from-ice-breaking-to-deal-making
#17
Wynne E Morrison
No abstract text is available yet for this article.
February 16, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28212103/simulation-of-healing-threshold-in-strain-induced-inflammation-through-a-discrete-informatics-model
#18
Israr Ibrahim, Sanjay Venkata Oruganti, Ramana Pidaparti
Respiratory diseases such as asthma and acute respiratory distress syndrome as well as acute lung injury involve inflammation at the cellular level. The inflammation process is very complex and is characterized by the emergence of cytokines along with other changes in cellular processes. Due to the complexity of the various constituents that makes up the inflammation dynamics, it is necessary to develop models that can complement experiments to fully understand inflammatory diseases. In this study, we developed a discrete informatics model based on cellular automata (CA) approach to investigate the influence of elastic field (stretch/strain) on the dynamics of inflammation and account for probabilistic adaptation based on statistical interpretation of existing experimental data...
February 15, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28211998/nanojoint-formation-between-ceramic-titanate-nanowires-and-spot-melting-of-metal-nanowires-with-electron-beam
#19
Arixin Bo, Jose Alarco, Huaiyong Zhu, Eric R Waclawik, Haifei Zhan, YuanTong Gu
Construction of nano-architectures requires techniques like joint formation and trimming. For ceramic materials, however, it is extremely difficult to form nanojoints by conventional methods like merging. In this work, we demonstrate that ceramic titanate nanowires (NWs) can be joined by spot melting under electron beam (e-beam) irradiation (EBI). The irradiation fuses the contacted spot of titanate NWs yielding an intact nanojoint. Nanojoints with different morphologies can be produced. The joint structures consist of titanium dioxide (TiO2) rutile, anatase and titanate phases in direction away from the e-beam melting spot...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28211920/evaluation-of-acridine-orange-derivatives-as-dna-targeted-radiopharmaceuticals-for-auger-therapy-influence-of-the-radionuclide-and-distance-to-dna
#20
Edgar Pereira, Letícia do Quental, Elisa Palma, Maria Cristina Oliveira, Filipa Mendes, Paula Raposinho, Isabel Correia, João Lavrado, Salvatore Di Maria, Ana Belchior, Pedro Vaz, Isabel Santos, António Paulo
A new family of (99m)Tc(I)- tricarbonyl complexes and (125)I-heteroaromatic compounds bearing an acridine orange (AO) DNA targeting unit was evaluated for Auger therapy. Characterization of the DNA interaction, performed with the non-radioactive Re and (127)I congeners, confirmed that all compounds act as DNA intercalators. Both classes of compounds induce double strand breaks (DSB) in plasmid DNA but the extent of DNA damage is strongly dependent on the linker between the Auger emitter ((99m)Tc or (125)I) and the AO moiety...
February 13, 2017: Scientific Reports
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