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Self-Organized Criticality

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https://www.readbyqxmd.com/read/27924160/multivalent-targeting-based-delivery-of-therapeutic-peptide-using-ap1-elp-carrier-for-effective-cancer-therapy
#1
Vijaya Sarangthem, Yunjae Kim, Thoudam Debraj Singh, Bo-Yeon Seo, Sun-Ha Cheon, Young-Jin Lee, Byung-Heon Lee, Rang-Woon Park
Elastin-like polypeptide (ELP)-based drug delivery has been utilized for various applications including cancer therapies for many years. Genetic incorporation of internalization ligands and cell-targeting peptides along with ELP polymer enhanced tumor accumulation and retention time as well as stability and activities of the drug conjugates. Herein, we described a unique delivery system comprised of genetically engineered ELP incorporated with multiple copies of IL-4 receptor targeting peptide (AP1) periodically and proapoptotic peptide (KLAKLAK)2 referred to as AP1-ELP-KLAK...
2016: Theranostics
https://www.readbyqxmd.com/read/27920090/islet-derived-cd4-t-cells-targeting-proinsulin-in-human-autoimmune-diabetes
#2
Aaron W Michels, Laurie G Landry, Kristen A McDaniel, Liping Yu, Martha Campbell-Thompson, William W Kwok, Kenneth L Jones, Peter A Gottlieb, John W Kappler, Qizhi Tang, Bart O Roep, Mark A Atkinson, Clayton E Mathews, Maki Nakayama
Type 1 diabetes results from chronic autoimmune destruction of insulin-producing beta cells within pancreatic islets. While insulin is a critical self-antigen in animal models of autoimmune diabetes, due to extremely limited access to pancreas samples, little is known about human antigenic targets for islet-infiltrating T-cells. Here we show that proinsulin peptides are targeted by islet-infiltrating T-cells from type 1 diabetes patients. We identified hundreds of T-cells from inflamed pancreatic islets of three young type 1 diabetes organ donors with a short disease duration with high risk HLA genes using a direct T-cell receptor (TCR) sequencing approach without long-term cell culture...
December 5, 2016: Diabetes
https://www.readbyqxmd.com/read/27919635/a-critical-assessment-on-kidney-allocation-systems
#3
REVIEW
Richard N Formica
The kidney allocation system that took effect on December 4, 2014 represents a significant improvement over the prior approach. It seeks to improve outcomes by longevity matching - pairing kidneys expected to function the longest with recipients expected to live the longest. It addresses the biological barriers faced by highly sensitized patients in an evidence based fashion and it begins to introduce the concept of medical need into kidney allocation by crediting time from the starting dialysis to a patient's waiting time...
October 8, 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/27917893/new-insights-into-molecular-organization-of-human-neuraminidase-1-transmembrane-topology-and-dimerization-ability
#4
Pascal Maurice, Stéphanie Baud, Olga V Bocharova, Eduard V Bocharov, Andrey S Kuznetsov, Charlotte Kawecki, Olivier Bocquet, Beatrice Romier, Laetitia Gorisse, Maxime Ghirardi, Laurent Duca, Sébastien Blaise, Laurent Martiny, Manuel Dauchez, Roman G Efremov, Laurent Debelle
Neuraminidase 1 (NEU1) is a lysosomal sialidase catalyzing the removal of terminal sialic acids from sialyloconjugates. A plasma membrane-bound NEU1 modulating a plethora of receptors by desialylation, has been consistently documented from the last ten years. Despite a growing interest of the scientific community to NEU1, its membrane organization is not understood and current structural and biochemical data cannot account for such membrane localization. By combining molecular biology and biochemical analyses with structural biophysics and computational approaches, we identified here two regions in human NEU1 - segments 139-159 (TM1) and 316-333 (TM2) - as potential transmembrane (TM) domains...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27915209/development-of-neural-population-activity-towards-self-organized-criticality
#5
Yuichiro Yada, Takeshi Mita, Akihiro Sanada, Ryuichi Yano, Ryohei Kanzaki, Douglas J Bakkum, Andreas Hierlemann, Hirokazu Takahashi
Self-organized criticality (SoC), a spontaneous dynamic state established and maintained in networks of moderate complexity, is a universal characteristic of neural systems. Such systems produce cascades of spontaneous activity that are typically characterized by power-law distributions and rich, stable spatiotemporal patterns (i.e., neuronal avalanches). Since the dynamics of the critical state confer advantages in information processing within neuronal networks, it is of great interest to determine how criticality emerges during development...
November 30, 2016: Neuroscience
https://www.readbyqxmd.com/read/27910603/investigation-on-quench-initiation-and-propagation-characteristics-of-gdbco-coil-co-wound-with-a-stainless-steel-tape-as-turn-to-turn-metallic-insulation
#6
Y G Kim, J B Song, Y H Choi, D G Yang, S G Kim, H G Lee
This paper investigates the quench initiation and propagation characteristics of a metallic insulation (MI) coil by conducting thermal quench tests for a GdBCO single-pancake coil co-wound with a stainless steel tape as the turn-to-turn MI. The test results confirmed that the MI coil exhibited superior thermal and electrical stabilities compared to the conventional coils co-wound with organic insulation material because the operating current could flow along the radial direction due to the existence of a turn-to-turn contact when a local hot spot was generated...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27907249/grainyhead-like-3-grhl3-deficiency-in-brain-leads-to-altered-locomotor-activity-and-decreased-anxiety-like-behaviours-in-aged-mice
#7
Sebastian Dworkin, Alana Auden, Darren D Partridge, Maria Daglas, Robert L Medcalf, Theo Mantamadiotis, Smitha R Georgy, Charbel Darido, Stephen M Jane, Stephen B Ting
The highly conserved Grainyhead-like (Grhl) family of transcription factors, comprising three members in vertebrates (Grhl1-3), play critical regulatory roles during embryonic development, cellular proliferation and apoptosis. Although loss of Grhl function leads to multiple neural abnormalities in numerous animal models, a comprehensive analysis of Grhl expression and function in the mammalian brain has not been reported. Here we show that only Grhl3 expression is detectable in the embryonic mouse brain; particularly within the habenula, an organ known to modulate repressive behaviours...
December 1, 2016: Developmental Neurobiology
https://www.readbyqxmd.com/read/27901330/critically-ill-octogenarians-and-nonagenarians-evaluation-of-long-term-outcomes-post-hospital-trajectories-and-quality-of-life-one-year-and-seven-years-after-icu-discharge
#8
Sandra Oeyen, Joris Vermassen, Ruth Piers, Dominique Benoit, Lieven Annemans, Johan Decruyenaere
BACKGROUND: To investigate long-term outcomes, post-hospital trajectories, and quality of life (QOL) in patients ≥ 80 years admitted to the intensive care unit (ICU) of a tertiary care hospital. METHODS: A 1-year prospective observational cohort analysis was performed. All consecutive patients ≥ 80 years admitted to the ICU were screened for inclusion. Demographics, comorbidity, organ failures, and outcomes were analyzed. QOL before admission, 3 months, 1 year, and 7 years after ICU discharge was assessed using EuroQoL-5D (EQ-5D) and Medical Outcomes Study 36-item Short Form Health Survey (SF-36) questionnaires...
November 30, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27896342/micellization-of-alkyltrimethylammonium-bromide-surfactants-in-choline-chloride-glycerol-deep-eutectic-solvent
#9
Adrian Sanchez-Fernandez, Thomas Arnold, Andrew J Jackson, Sian L Fussell, Richard K Heenan, Richard A Campbell, Karen J Edler
Deep eutectic solvents have shown the ability to promote the self-assembly of surfactants in solution. However, some differences have been found compared with self-assembly in pure water and other polar organic solvents. The behaviour of alkyltrimethylammonium bromides in choline chloride:glycerol deep eutectic solvent has been studied by means of surface tension, X-ray and neutron reflectivity and small-angle neutron scattering. The surfactants were found to remain surface active and showed comparable critical micelle concentrations to the same surfactants in water...
November 29, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27890000/reproductive-toxicity-of-t-cells-in-early-life-abnormal-immune-development-and-postnatal-diseases
#10
Han-Xiao Liu, Aifang Jiang, Ting Chen, Wen Qu, Hui-Yi Yan, Jie Ping
Immunity is a balanced status with adequate biological defenses to recognize and fight "non-self", as well as adequate tolerance to recognize "self". To maintain this immune homeostasis, a well-organized T cell immune network is required, which in part depends on the well-controlled development of alternative effector T cells, with different cytokine repertoires. Recent research has pointed that developing fetal T cells network is a remarkably sensitive toxicological target for adverse factors in early life...
November 24, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27888264/sharing-for-health-a-study-of-chinese-adolescents-experiences-and-perspectives-on-using-social-network-sites-to-share-health-information
#11
Ni Zhang, Michele Teti, Kellie Stanfield, Shelly Campo
PURPOSE: This exploratory qualitative study examines Chinese adolescents' health information sharing habits on social network sites. METHOD: Ten focus group meetings with 76 adolescents, ages 12 to 17 years, were conducted at community-based organizations in Chicago's Chinatown. The research team transcribed the recording and analyzed the transcripts using ATLAS.ti. RESULTS: Chinese adolescents are using different social network sites for various topics of health information including food, physical activity, and so on...
November 25, 2016: Journal of Transcultural Nursing: Official Journal of the Transcultural Nursing Society
https://www.readbyqxmd.com/read/27881254/health-technology-assessment-international-reference-pricing-and-budget-control-tools-from-china-s-perspective-what-are-the-current-developments-and-future-considerations
#12
Liling Koh, Christoph Glaetzer, Shu Chuen Li, Meng Zhang
BACKGROUND: China is investing considerably in health care reforms to address issues in its health care system. An example is access to innovative drugs, which remains challenging because it is largely dependent on patient self-pay. Recognizing this, the government has invested considerably in its basic medical insurance. As health care expenditure increases, there are growing concerns on budget control. Several health policy tools have been discussed recently such as health technology assessment, international reference pricing, and hospital budget control tools, which can be viewed as addressing the affordability concerns of the government budget...
May 2016: Value in Health Regional Issues
https://www.readbyqxmd.com/read/27880719/inhibition-of-5-lipoxygenase-downregulates-stemness-and-kills-prostate-cancer-stem-cells-by-triggering-apoptosis-via-activation-of-c-jun-n-terminal-kinase
#13
Sivalokanathan Sarveswaran, Nadimpalli Varma, Shravan Morisetty, Jagadananda Ghosh
The cancer stem cell (CSC) concept suggests that neoplastic clones are maintained exclusively by a rare group of cells possessed with stem cell properties. CSCs are characterized by features that include self-renewal, pluripotency and tumorigenicity, and are thought to be solely responsible for tumor recurrence and metastasis. A hierarchically organized CSC model is becoming increasingly evident for various types of cancer, including prostate cancer. The CD44 (+), CD133 (+) cell subpopulations were isolated from human prostate tumors which exhibit stem-like properties showing therapeutic-resistance, capacity of self-renewal, and exact recapitulation of the original tumor in vivo...
November 17, 2016: Oncotarget
https://www.readbyqxmd.com/read/27879337/interactions-between-melanin-enzymes-and-their-atypical-recruitment-to-the-secretory-pathway-by-palmitoylation
#14
Srijana Upadhyay, Xinping Xu, Xiaorong Lin
: Melanins are biopolymers that confer coloration and protection to the host organism against biotic or abiotic insults. The level of protection offered by melanin depends on its biosynthesis and its subcellular localization. Previously, we discovered that Aspergillus fumigatus compartmentalizes melanization in endosomes by recruiting all melanin enzymes to the secretory pathway. Surprisingly, although two laccases involved in the late steps of melanization are conventional secretory proteins, the four enzymes involved in the early steps of melanization lack a signal peptide or a transmembrane domain and are thus considered "atypical" secretory proteins...
November 22, 2016: MBio
https://www.readbyqxmd.com/read/27876297/host-transcriptomic-responses-to-pneumonic-plague-reveal-that-yersinia-pestis-inhibits-both-the-initial-adaptive-and-innate-immune-responses-in-mice
#15
Huiying Yang, Tong Wang, Guang Tian, Qingwen Zhang, Xiaohong Wu, Youqian Xin, Yanfeng Yan, Yafang Tan, Shiyang Cao, Wanbing Liu, Yujun Cui, Ruifu Yang, Zongmin Du
Pneumonic plague is the most deadly form of infection caused by Yersinia pestis and can progress extremely fast. However, our understanding on the host transcriptomic response to pneumonic plague is insufficient. Here, we used RNA-sequencing technology to analyze transcriptomic responses in mice infected with fully virulent strain 201 or EV76, a live attenuated vaccine strain lacking the pigmentation locus. Approximately 600 differentially expressed genes (DEGs) were detected in lungs from both 201- and EV76-infected mice at 12h post-infection (hpi)...
November 14, 2016: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/27872203/molecular-mechanisms-of-asymmetric-divisions-in-mammary-stem-cells
#16
REVIEW
Angela Santoro, Thalia Vlachou, Manuel Carminati, Pier Giuseppe Pelicci, Marina Mapelli
Stem cells have the remarkable ability to undergo proliferative symmetric divisions and self-renewing asymmetric divisions. Balancing of the two modes of division sustains tissue morphogenesis and homeostasis. Asymmetric divisions of Drosophila neuroblasts (NBs) and sensory organ precursor (SOP) cells served as prototypes to learn what we consider now principles of asymmetric mitoses. They also provide initial evidence supporting the notion that aberrant symmetric divisions of stem cells could correlate with malignancy...
December 2016: EMBO Reports
https://www.readbyqxmd.com/read/27870718/self-reported-preparedness-to-respond-to-mass-fatality-incidents-in-38-state-health-departments
#17
Jacqueline Merrill, Qi Zhi, Robyn R Gershon
CONTEXT: Public health departments play an important role in the preparation and response to mass fatality incidents (MFIs). OBJECTIVE: To describe MFI response capabilities of US state health departments. DESIGN: The data are part of a multisector cross-sectional study aimed at 5 sectors that comprise the US mass fatality infrastructure. Data were collected over a 6-week period via a self-administered, anonymous Web-based survey. SETTING: In 2014, a link to the survey was distributed via e-mail to health departments in 50 states and the District of Columbia...
January 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/27868448/applying-an-ecological-framework-to-understand-transition-pathways-to-post-secondary-education-for-youth-with-physical-disabilities
#18
Sally Lindsay, Michelle Duncanson, Nadia Niles-Campbell, Carolyn McDougall, Sara Diederichs, Dolly Menna-Dack
PURPOSE: The purpose of this study was to explore the experiences of youth with physical disabilities and clinicians who support them in their transition to post-secondary education (PSE). Most research on transition to PSE has focused on youth with intellectual disabilities while there is a lack of research on youth with physical disabilities. METHODS: This study drew on 30 interviews with 20 youth with disabilities and 10 clinicians. We used Bronfrenbrenner's ecological framework to inform our analysis...
November 20, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27866570/the-diagnosis-and-treatment-of-peripheral-arterial-vascular-disease
#19
Holger Lawall, Peter Huppert, Christine Espinola-Klein, Gerhard Rümenapf
BACKGROUND: In peripheral arterial occlusive disease (PAOD), arterial stenosis or occlusion impairs perfusion in the territory of the distal portion of the aorta and the iliac and leg arteries. In Germany, the prevalence of PAOD rises with age, reaching 20% among persons over age 70. METHODS: This guideline was prepared by a collaboration of 22 medical specialty societies and two patient self-help organizations on the basis of pertinent publications that were retrieved by a systematic search in PubMed for articles that appeared from 2008 to April 2014, with a subsequent update to May 2015...
October 28, 2016: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/27846852/a-systematic-review-of-physician-retirement-planning
#20
Michelle Pannor Silver, Angela D Hamilton, Aviroop Biswas, Natalie Irene Warrick
BACKGROUND: Physician retirement planning and timing have important implications for patients, hospitals, and healthcare systems. Unplanned early or late physician retirement can have dire consequences in terms of both patient safety and human resource allocations. This systematic review examined existing evidence on the timing and process of retirement of physicians. Four questions were addressed: (1) When do physicians retire? (2) Why do some physicians retire early? (3) Why do some physicians delay their retirement? (4) What strategies facilitate physician retention and/or retirement planning? METHODS: English-language studies were searched in electronic databases MEDLINE, Web of Science, Scopus, CINAHL, AgeLine, Embase, HealthSTAR, ASSA, and PsycINFO, from inception up to and including March 2016...
November 15, 2016: Human Resources for Health
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