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Infectious diseases modeling

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https://www.readbyqxmd.com/read/29778193/single-nucleotide-variants-in-innate-immune-genes-associated-with-salmonella-shedding-and-colonization-in-swine-on-commercial-farms
#1
Margaret H Ainslie-Garcia, Abdolvahab Farzan, Mohsen Jafarikia, Brandon N Lillie
Foodborne human salmonellosis is an important food safety concern worldwide. Food-producing animals are one of the major sources of human salmonellosis, and thus control of Salmonella at the farm level could reduce Salmonella spread in the food supply system. Genetic selection of pigs with resistance to Salmonella infection may be one way to control Salmonella on swine farms. The objective of this study was to investigate the association between genetic variants in the porcine innate immune system with on-farm Salmonella shedding and Salmonella colonization tested at slaughter...
June 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29777425/the-use-of-hiv-post-exposure-prophylaxis-in-forensic-medicine-following-incidents-of-sexual-violence-in-hamburg-germany-a-retrospective-study
#2
Julia Ebert, Jan Peter Sperhake, Olaf Degen, Ann Sophie Schröder
In Hamburg, Germany, the initiation of HIV post-exposure prophylaxis (HIV PEP) in cases of sexual violence is often carried out by forensic medical specialists (FMS) using the city's unique Hamburg Model. FMS-provided three-day HIV PEP starter packs include a combination of raltegravir and emtricitabine/tenofovir. This study aimed to investigate the practice of offering HIV PEP, reasons for discontinuing treatment, patient compliance, and whether or not potential perpetrators were tested for HIV. We conducted a retrospective study of forensic clinical examinations carried out by the Hamburg Department of Legal Medicine following incidents of sexual violence from 2009 to 2016...
May 18, 2018: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/29776758/using-preference-learning-for-detecting-inconsistencies-in-clinical-practice-guidelines-methods-and-application-to-antibiotherapy
#3
Rosy Tsopra, Jean-Baptiste Lamy, Karima Sedki
Clinical practice guidelines provide evidence-based recommendations. However, many problems are reported, such as contradictions and inconsistencies. For example, guidelines recommend sulfamethoxazole/trimethoprim in child sinusitis, but they also state that there is a high bacteria resistance in this context. In this paper, we propose a method for the semi-automatic detection of inconsistencies in guidelines using preference learning, and we apply this method to antibiotherapy in primary care. The preference model was learned from the recommendations and from a knowledge base describing the domain...
May 15, 2018: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/29776610/comparative-evaluation-of-immune-responses-of-swine-in-prrs-stable-and-unstable-herds
#4
Michele Drigo, Enrico Giacomini, Massimiliano Lazzaro, Daniela Pasotto, Dania Bilato, Jessica Ruggeri, Maria Beatrice Boniotti, Giovani Loris Alborali, Massimo Amadori
Porcine Reproductive and Respiratory Syndrome (PRRS) is an elusive model of host/virus relationship in which disease is determined by virus pathogenicity, pig breed susceptibility and phenotype, microbial infectious pressure and environmental conditions. Successful disease control in PRRS-endemic Countries corresponds to "stability", i.e. a condition with no clinical signs of PRRS in the breeding-herd population and no viremia in weaning-age pigs. The aim of this work was to compare the profile and time-course of humoral and cell-mediated immunity in stable and unstable herds, respectively...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29775680/assessing-the-effects-of-daily-commuting-in-two-patch-dengue-dynamics-a-case-study-of-cali-colombia
#5
Edwin Barrios, Sunmi Lee, Olga Vasilieva
There are many infectious diseases that can be spread by daily commuting of people and dengue fever is one of them. The absence of vaccine and irregularities in ongoing vector control programs make this disease the most frequent and persistent in many tropical and subtropical regions of the world. This paper targets to access the effects of daily commuting on dengue transmission dynamics by using a deterministic two-patch model fitted to observed data gathered in Cali, Colombia where dengue fever is highly persistent and exhibits endemo-epidemic patterns...
May 15, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29774217/effective-network-size-predicted-from-simulations-of-pathogen-outbreaks-through-social-networks-provides-a-novel-measure-of-structure-standardized-group-size
#6
Collin M McCabe, Charles L Nunn
The transmission of infectious disease through a population is often modeled assuming that interactions occur randomly in groups, with all individuals potentially interacting with all other individuals at an equal rate. However, it is well known that pairs of individuals vary in their degree of contact. Here, we propose a measure to account for such heterogeneity: effective network size (ENS), which refers to the size of a maximally complete network (i.e., unstructured, where all individuals interact with all others equally) that corresponds to the outbreak characteristics of a given heterogeneous, structured network...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29773773/cuban-epidemic-neuropathy-insights-into-the-toxic-nutritional-hypothesis-through-international-collaboration
#7
Alina González-Quevedo, Rosaralis Santiesteban-Freixas, Janis T Eells, Lucimey Lima, Alfredo A Sadun
From 1991 to 1993, an epidemic of optic and peripheral neuropathy-the largest of the century-broke out in Cuba, affecting more than 50,000 people. Initially the main clinical features were decreased visual acuity, central and cecocentral scotomas, impaired color vision and absence of the papillomacular bundle. Later, peripheral and mixed optic-peripheral forms began to appear. Due to the magnitude of the epidemic, the Cuban government requested help from the international community at the 46th World Health Assembly in 1993...
April 2018: MEDICC Review
https://www.readbyqxmd.com/read/29772893/quantifying-human-environment-interactions-using-videography-in-the-context-of-infectious-disease-transmission
#8
Timothy R Julian, Carla Bustos, Laura H Kwong, Alejandro D Badilla, Julia Lee, Heather N Bischel, Robert A Canales
Quantitative data on human-environment interactions are needed to fully understand infectious disease transmission processes and conduct accurate risk assessments. Interaction events occur during an individual's movement through, and contact with, the environment, and can be quantified using diverse methodologies. Methods that utilize videography, coupled with specialized software, can provide a permanent record of events, collect detailed interactions in high resolution, be reviewed for accuracy, capture events difficult to observe in real-time, and gather multiple concurrent phenomena...
May 8, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772528/peptide-inhibitors-of-chloride-channels-for-treating-secretory-diarrhea
#9
Jitu Ma, Xueqin Ding, Yulong Yin, Pengfei Huang
Morbidity and mortality associated with diarrheal diseases remain significant burdens on global health. In the developing world, the major sources of secretory diarrhea are infectious, including those caused by bacteria such as enterotoxic Escherichia coli , and viruses such as rotavirus. In many cases of secretory diarrhea, activation of pathways for cyclic nucleotides and/or Ca2+ signaling in the apical membrane of enterocytes increases the conductance of Cl- channels at the enterocyte lumen-facing membrane...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29771915/inactivation-of-bpsl1039-1040-atp-binding-cassette-transporter-reduces-intracellular-survival-in-macrophages-biofilm-formation-and-virulence-in-the-murine-model-of-burkholderia-pseudomallei-infection
#10
Peechanika Pinweha, Pornpan Pumirat, Jon Cuccui, Niramol Jitprasutwit, Veerachat Muangsombut, Varintip Srinon, Usa Boonyuen, Parameth Thiennimitr, Paiboon Vattanaviboon, Felipe Cia, Sam Willcocks, Gregory J Bancroft, Brendan W Wren, Sunee Korbsrisate
Burkholderia pseudomallei, a gram-negative intracellular bacillus, is the causative agent of a tropical infectious disease called melioidosis. Bacterial ATP-binding cassette (ABC) transporters import and export a variety of molecules across bacterial cell membranes. At present, their significance in B. pseudomallei pathogenesis is poorly understood. We report here characterization of the BPSL1039-1040 ABC transporter. B. pseudomallei cultured in M9 medium supplemented with nitrate, demonstrated that BPSL1039-1040 is involved in nitrate transport for B...
2018: PloS One
https://www.readbyqxmd.com/read/29771872/outbreaks-associated-with-treated-recreational-water-united-states-2000-2014
#11
Michele C Hlavsa, Bryanna L Cikesh, Virginia A Roberts, Amy M Kahler, Marissa Vigar, Elizabeth D Hilborn, Timothy J Wade, Dawn M Roellig, Jennifer L Murphy, Lihua Xiao, Kirsten M Yates, Jasen M Kunz, Matthew J Arduino, Sujan C Reddy, Kathleen E Fullerton, Laura A Cooley, Michael J Beach, Vincent R Hill, Jonathan S Yoder
Outbreaks associated with exposure to treated recreational water can be caused by pathogens or chemicals in venues such as pools, hot tubs/spas, and interactive water play venues (i.e., water playgrounds). During 2000-2014, public health officials from 46 states and Puerto Rico reported 493 outbreaks associated with treated recreational water. These outbreaks resulted in at least 27,219 cases and eight deaths. Among the 363 outbreaks with a confirmed infectious etiology, 212 (58%) were caused by Cryptosporidium (which causes predominantly gastrointestinal illness), 57 (16%) by Legionella (which causes Legionnaires' disease, a severe pneumonia, and Pontiac fever, a milder illness with flu-like symptoms), and 47 (13%) by Pseudomonas (which causes folliculitis ["hot tub rash"] and otitis externa ["swimmers' ear"])...
May 18, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29770863/siv-latency-in-macrophages-in-the-cns
#12
Lucio Gama, Celina Abreu, Erin N Shirk, Suzanne E Queen, Sarah E Beck, Kelly A Metcalf Pate, Brandon T Bullock, M Christine Zink, Joseph L Mankowski, Janice E Clements
Lentiviruses infect myeloid cells, leading to acute infection followed by persistent/latent infections not cleared by the host immune system. HIV and SIV are lentiviruses that infect CD4+ lymphocytes in addition to myeloid cells in blood and tissues. HIV infection of myeloid cells in brain, lung, and heart causes tissue-specific diseases that are mostly observed during severe immunosuppression, when the number of circulating CD4+ T cells declines to exceeding low levels. Antiretroviral therapy (ART) controls viral replication but does not successfully eliminate latent virus, which leads to viral rebound once ART is interrupted...
May 17, 2018: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/29770047/emerging-infectious-diseases-prediction-and-detection
#13
N H Ogden, P AbdelMalik, Jrc Pulliam
Emerging infectious diseases (EIDs), including West Nile virus, severe acute respiratory syndrome (SARS) and Lyme disease, have had a direct effect within Canada, while many more EIDs such as Zika, chikungunya and Ebola are a threat to Canadians while travelling. Over 75% of EIDs affecting humans are, or were originally, zoonoses (infectious diseases transmitted from animals to humans). There are two main ways by which infectious diseases can emerge: by changes in their geographical ranges and by adaptive emergence, a genetic change in a microorganism that results in it becoming capable of invading a new niche, often by jumping to a new host species such as humans...
October 5, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29769027/immune-monitoring-after-pediatric-liver-transplantation-the-prospective-chilsfree-cohort-study
#14
Imeke Goldschmidt, André Karch, Rafael Mikolajczyk, Frauke Mutschler, Norman Junge, Eva Doreen Pfister, Tamara Möhring, Lorenzo d'Antiga, Patrick McKiernan, Deirdre Kelly, Dominique Debray, Valérie McLin, Joanna Pawlowska, Loreto Hierro, Kerstin Daemen, Jana Keil, Christine Falk, Ulrich Baumann
BACKGROUND: Although trough levels of immunosuppressive drugs are largely used to monitor immunosuppressive therapy after solid organ transplantation, there is still no established tool that allows for a validated assessment of functional degree of immunosuppression or the identification of clinically relevant over- or under-immunosuppression, depending on graft homeostasis. Reliable non-invasive markers to predict biopsy proven acute rejection (BPAR) do not exist. Literature data suggest that longitudinal measurements of immune markers might be predictive of BPAR, but data in children are scarce...
May 16, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29768293/seasonality-of-common-pediatric-infectious-diseases
#15
Susan C Lipsett, Michael C Monuteaux, Andrew M Fine
BACKGROUND/OBJECTIVE: Traditional sources cite seasonal patterns for common infectious diseases, often based on microbiologic data, but little is known about cyclical trends in clinically diagnosed infectious conditions in the emergency department (ED). We leveraged the publicly available Nationwide Emergency Department Sample database to measure the seasonality of the most common pediatric infectious diseases diagnosed in US EDs. METHODS: We searched the Nationwide Emergency Department Sample database to identify infectious diagnoses comprising at least 1% of all diagnosis codes ascribed to patients 21 years and younger in US EDs from 2009 to 2013...
May 15, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29767614/differential-attenuation-of-marek-s-disease-virus-induced-tumours-and-late-marek-s-disease-virus-induced-immunosuppression
#16
Nik M Faiz, Aneg L Cortes, James S Guy, Sanjay M Reddy, Isabel M Gimeno
Marek's disease virus (MDV) is a herpesvirus that induces lymphoma and a variety of non-neoplastic syndromes in chickens. Furthermore, very virulent plus (vv+) MDVs induce a form of immunosuppression (late-MDV-IS) that might involve both neoplastic and non-neoplastic mechanisms. The objective of this study was to evaluate whether the attenuation of MDV-induced tumours and late-MDV-IS occurs simultaneously or can be dissociated. The immunosuppressive ability of three viruses derived from vv+ MDV strain 686 (wild-type 686, the somewhat attenuated molecular clone 686-BAC, and the nononcogenic molecular clone lacking the two copies of the oncogene meq 686-BACΔMEQ) was evaluated...
May 16, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29766700/health-policy-programs-realised-in-poland-in-2016-2017
#17
Patrycja Kurowska, Anna Królak, Wojciech Giermaziak
Background: Health Policy Program (Program Polityki Zdrowotnej – PPZ) is a state policy tool for engaging local government units into the mechanism of granting provision of health services. Authors show areas in which self-governments most often took preventive health care actions and describe legislative changes in the Act on provision of health services. Objective: The aim of the article is to quantitative and qualitative statement of PPZ prepared in Poland in 2016 and 2017, as well as presenting changing legal situation in the scope of evaluation of these projects...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29765814/designing-of-phenol-based-%C3%AE-carbonic-anhydrase1-inhibitors-through-qsar-molecular-docking-and-md-simulation-approach
#18
Shahzaib Ahamad, Md Imtaiyaz Hassan, Neeraja Dwivedi
Tuberculosis (Tb) is an airborne infectious disease caused by Mycobacterium tuberculosis. Beta-carbonic anhydrase 1 ( β-CA1 ) has emerged as one of the potential targets for new antitubercular drug development. In this work, three-dimensional quantitative structure-activity relationships (3D-QSAR), molecular docking, and molecular dynamics (MD) simulation approaches were performed on a series of natural and synthetic phenol-based β-CA1 inhibitors. The developed 3D-QSAR model ( r 2  = 0.94, q 2  = 0...
May 2018: 3 Biotech
https://www.readbyqxmd.com/read/29764399/the-reachability-of-contagion-in-temporal-contact-networks-how-disease-latency-can-exploit-the-rhythm-of-human-behavior
#19
Ewan Colman, Kristen Spies, Shweta Bansal
BACKGROUND: The symptoms of many infectious diseases influence their host to withdraw from social activity limiting their potential to spread. Successful transmission therefore requires the onset of infectiousness to coincide with a time when the host is socially active. Since social activity and infectiousness are both temporal phenomena, we hypothesize that diseases are most pervasive when these two processes are synchronized. METHODS: We consider disease dynamics that incorporate behavioral responses that effectively shorten the infectious period of the pathogen...
May 15, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29760697/hookworm-secreted-extracellular-vesicles-interact-with-host-cells-and-prevent-inducible-colitis-in-mice
#20
Ramon M Eichenberger, Stephanie Ryan, Linda Jones, Geraldine Buitrago, Ramona Polster, Marcela Montes de Oca, Jennifer Zuvelek, Paul R Giacomin, Lindsay A Dent, Christian R Engwerda, Matthew A Field, Javier Sotillo, Alex Loukas
Gastrointestinal (GI) parasites, hookworms in particular, have evolved to cause minimal harm to their hosts, allowing them to establish chronic infections. This is mediated by creating an immunoregulatory environment. Indeed, hookworms are such potent suppressors of inflammation that they have been used in clinical trials to treat inflammatory bowel diseases (IBD) and celiac disease. Since the recent description of helminths (worms) secreting extracellular vesicles (EVs), exosome-like EVs from different helminths have been characterized and their salient roles in parasite-host interactions have been highlighted...
2018: Frontiers in Immunology
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