Results for 'virus - immune system interaction'

17 found
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  1.  9
    Virus-Information Coevolution Spreading Dynamics on Multiplex Networks.Jian Wang, Xiaolin Qin & Hongying Fang - 2021 - Complexity 2021:1-9.
    Virus and information spreading dynamics widely exist in complex systems. However, systematic study still lacks for the interacting spreading dynamics between the two types of dynamics. This paper proposes a mathematical model on multiplex networks, which considers the heterogeneous susceptibility and infectivity in two subnetworks. By using a heterogeneous mean-field theory, we studied the dynamic process and outbreak threshold of the system. Through extensive numerical simulations on artificial networks, we find that the virus’s spreading dynamics can be (...)
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  2.  18
    Plant viruses: A tool‐box for genetic engineering and crop protection.T. Michael & A. Wilson - 1989 - Bioessays 10 (6):179-186.
    Traditionally, plant viruses are viewed as harmful, undesirable pathogens. However, their genomes can provide several useful ‘designer functions’ or ‘sequence modules’ with which to tailor future gene vectors for plant or general biotechnology.The majority (77 %) of known plant viruses have single‐stranded RNA of the messenger (protein coding) sense as their genetic material. Over the past 4 years, improved in vitro transcription systems and the construction of partial of fulllength DNA copies of several plant RNA viruses have enhanced our ability (...)
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  3.  33
    (1 other version)The study of lysogeny at the Pasteur Institute (1950–1960): an epistemologically open system.Nadine Peyrieras & Michel Morange - 2002 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 33 (3):419-430.
    Many historical studies have been devoted to the French school of molecular biology, in particular to the work of Jacques Monod on adaptive enzymes. By focusing on Francois Jacob's studies on lysogeny between 1950 and 1960, we intend to redress the imbalance of historiography, as well as proposing a more fruitful point of view for understanding the relative importance of international contacts and local traditions in the genesis of the operon model.Elie Wollman and Jacob's work on temperate bacteriophages rendered respectable (...)
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  4.  11
    Neuropsychiatric Symptoms of COVID-19 Explained by SARS-CoV-2 Proteins’ Mimicry of Human Protein Interactions.Hale Yapici-Eser, Yunus Emre Koroglu, Ozgur Oztop-Cakmak, Ozlem Keskin, Attila Gursoy & Yasemin Gursoy-Ozdemir - 2021 - Frontiers in Human Neuroscience 15.
    The first clinical symptoms focused on the presentation of coronavirus disease 2019 have been respiratory failure, however, accumulating evidence also points to its presentation with neuropsychiatric symptoms, the exact mechanisms of which are not well known. By using a computational methodology, we aimed to explain the molecular paths of COVID-19 associated neuropsychiatric symptoms, based on the mimicry of the human protein interactions with SARS-CoV-2 proteins.Methods: Available 11 of the 29 SARS-CoV-2 proteins’ structures have been extracted from Protein Data Bank. HMI-PRED, (...)
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  5.  14
    Neurotropic enteroviruses co-opt “fair-weather-friend” commensal gut microbiota to drive host infection and central nervous system disturbances.Kevin B. Clark - 2019 - Behavioral and Brain Sciences 42.
    Some neurotropic enteroviruses hijack Trojan horse/raft commensal gut bacteria to render devastating biomimicking cryptic attacks on human/animal hosts. Such virus-microbe interactions manipulate hosts’ gut-brain axes with accompanying infection-cycle-optimizing central nervous system disturbances, including severe neurodevelopmental, neuromotor, and neuropsychiatric conditions. Co-opted bacteria thus indirectly influence host health, development, behavior, and mind as possible “fair-weather-friend” symbionts, switching from commensal to context-dependent pathogen-like strategies benefiting gut-bacteria fitness.
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  6.  60
    Constructing objects and transforming experimental systems.Juha Tuunainen - 2001 - Perspectives on Science 9 (1):78-105.
    : The main contribution of this paper for social studies of scientific practice is to use and further elaborate the concept of experimental system. It is expanded from mere epistemic concerns to also incorporate the built-in practicality and societal relevance of scientific research. For this, an analysis of object construction by a potato-biotechnology research group is presented. The group's object of activity is conceptualized as a dual one comprising both the epistemic and applied objectives. The application object points to (...)
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  7.  31
    Human papillomaviruses in oncogenesis.Pedro A. Lazo - 1988 - Bioessays 9 (5):158-162.
    Papillomaviruses, long associated with benign skin tumors, have been linked more recently to human cancers, particularly to cervical carcinoma. Molecular analysis of the virus has identified the transforming gene and its regulation by both viral and cellular trans:‐acting factors. This viral regulatory mechanism is altered in carcinomas. However, lack of progress in developing an in vitro system has hampered investigation of the viral life cycle and the biology of the virus‐‐host: cell interaction.
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  8. What is Life?Guenther Witzany - 2020 - Frontiers in Astronomy and Space Sciences 7:1-13.
    In searching for life in extraterrestrial space, it is essential to act based on an unequivocal definition of life. In the twentieth century, life was defined as cells that self-replicate, metabolize, and are open for mutations, without which genetic information would remain unchangeable, and evolution would be impossible. Current definitions of life derive from statistical mechanics, physics, and chemistry of the twentieth century in which life is considered to function machine like, ignoring a central role of communication. Recent observations show (...)
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  9.  17
    Critical Pedagogy in the New Normal.Christopher Ryan Maboloc - 2020 - Voices in Bioethics 6.
    Photo by Thought Catalog on Unsplash INTRODUCTION The coronavirus pandemic is a challenge to educators, policy makers, and ordinary people. In facing the threat from COVID-19, school systems and global institutions need “to address the essential matter of each human being and how they are interacting with, and affected by, a much wider set of biological and technical conditions.”[1] Educators must grapple with the societal issues that come with the intent of ensuring the safety of the public. To some, “these (...)
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  10.  91
    Reconsidering cultural selection theory.G. K. D. Crozier - 2008 - British Journal for the Philosophy of Science 59 (3):455-479.
    This paper examines conceptual issues that arise in applications of Darwinian natural selection to cultural systems. I argue that many criticisms of cultural selectionist models have been based on an over-detailed reading of the analogy between biological and cultural units of selection. I identify five of the most powerful objections to cultural selection theory and argue that none cuts to its heart. Some objections are based on mistaken assumptions about the simplicity of the mechanisms of biological heredity. Other objections are (...)
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  11.  4
    Testing the Effectiveness of the Health Belief Model in Predicting Preventive Behavior During the COVID-19 Pandemic: The Case of Romania and Italy.Johannes Alfons Karl, Ronald Fischer, Elena Druică, Fabio Musso & Anastasia Stan - 2022 - Frontiers in Psychology 12.
    We use a cultural psychology approach to examine the relevance of the Health Belief Model for predicting a variety of behaviors that had been recommended by health officials during the initial stages of the COVID-19 lockdown for containing the spread of the virus and not overburdening the health system in Europe. Our study is grounded in the assumption that health behavior is activated based on locally relevant perceptions of threats, susceptibility and benefits in engaging in protective behavior, which (...)
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  12.  12
    The Freedom to Breathe.Jan Söffner - 2023 - Substance 52 (1):145-152.
    In lieu of an abstract, here is a brief excerpt of the content:The Freedom to BreatheJan Söffner (bio)It almost goes without saying: During the current pandemic, breathing lost its mere subliminal existence as an automated subsystem of our conscious existence and gained an oppressive presence. It did so in medical terms, in the spread of a virus attacking the respiratory system. It did so in terms of the lockdowns that virtualized much of our physical existence, cutting breath off (...)
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  13.  27
    Reovirus protein σ1: From cell attachment to protein oligomerization and folding mechanisms.Patrick W. K. Lee & Gustavo Leone - 1994 - Bioessays 16 (3):199-206.
    The reovirus cell attachment protein σ1 is a lollipopshaped structure with the fibrous tail anchored to the virion. Since it interacts with the cell receptor, σ1 is a major determinant of reovirus infectivity and tissue tropism. Studies on its structure‐function relationships have been facilitated by the fact that protein σ1 produced in any expression system is capable of binding to cell receptors. The use of site‐specific and deletion mutants has led to the identification and characterization of its virion anchorage (...)
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  14. Too many cities in the city? Interdisciplinary and transdisciplinary city research methods and the challenge of integration.Machiel Keestra - 2020 - In Nanke Verloo & Luca Bertolini (eds.), Seeing the City: Interdisciplinary Perspectives on the Study of the Urban. pp. 226-242.
    Introduction: Interdisciplinary, transdisciplinary and action research of a city in lockdown. As we write this chapter, most cities across the world are subject to a similar set of measures due to the spread of COVID-19 coronavirus, which is now a global pandemic. Independent of city size, location, or history, an observer would note that almost all cities have now ground to a halt, with their citizens being confined to their private dwellings, social and public gatherings being almost entirely forbidden, and (...)
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  15.  20
    Perception of the Sports Social Environment After the Development and Implementation of an Identification Tool for Contagious Risk Situations in Sports During the COVID-19 Pandemic.José Ramón Lete-Lasa, Rafael Martin-Acero, Javier Rico-Diaz, Joaquín Gomez-Varela & Dan Rio-Rodriguez - 2021 - Frontiers in Psychology 12.
    This study details the methodological process for creating a tool for the identification of COVID-19 potential contagion situations in sports and physical education before, during, and after practice and competition. It is a tool that implies an educational and methodological process with all the agents of the sports system. This tool identifies the large number of interactions occurring through sports action and everything that surrounds it in training, competition, and organization. The aim is to prepare contingency protocols based on (...)
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  16.  42
    Beyond privacy vs. health: a justification analysis of the contact-tracing apps debate in the Netherlands.Lotje Elizabeth Siffels - 2020 - Ethics and Information Technology 23 (1):99-103.
    In the Netherlands, as in many other nations, the government has proposed the use of a contact-tracing app as a means of helping to contain the spread of the corona virus. The discussion about the use of such an app has mostly been framed in terms of a tradeoff between privacy and public health. This research statement presents an analysis of the Dutch public debate on Corona-apps by using the framework of Orders of Worth by Boltanski and Thévenot (1991). (...)
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  17.  19
    Tracing app technology: an ethical review in the COVID-19 era and directions for post-COVID-19. [REVIEW]Ehsan Hajiramezanali, Shahriar Esmaeili, Kambiz Rasoulkhani, Ali Akbari, Ali Mostafavi, Amir Esmalian & Saleh Afroogh - 2022 - Ethics and Information Technology 24 (3):1-15.
    We conducted a systematic literature review on the ethical considerations of the use of contact tracing app technology, which was extensively implemented during the COVID-19 pandemic. The rapid and extensive use of this technology during the COVID-19 pandemic, while benefiting the public well-being by providing information about people’s mobility and movements to control the spread of the virus, raised several ethical concerns for the post-COVID-19 era. To investigate these concerns for the post-pandemic situation and provide direction for future events, (...)
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