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https://www.readbyqxmd.com/read/28453689/periodontal-disease-edentulism-and-pancreatic-cancer-a-meta-analysis
#1
P Maisonneuve, S Amar, A B Lowenfels
Background: Periodontal disease (PD), now our commonest infectious disorder leads to tooth loss, and has been linked to various systemic diseases, including various types of cancer. The aim of this study is to provide a systematic review and a meta-analysis of the relationship between PD, edentulism, and pancreatic cancer (PC). Patients and methods: From an initial review of 327 references we selected eight studies concerning periodontitis or edentulism with sufficient quantitative information to allow us to examine the risk of PC...
May 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28453386/collateral-damage-during-antibiotic-treatment-of-c-difficile-infection-in-the-aged-host-insights-into-why-recurrent-disease-happens
#2
Jae Hyun Shin, Cirle A Warren
Clostridium difficile infection (CDI) is one of the most common causes of healthcare-associated infections but an even bigger problem for the aging population. Advanced age leads to higher incidence, higher mortality, and higher recurrences. In our study, recently published in the Journal of Infectious Diseases, we investigated the effect of aging on CDI using a mouse model. We were able to demonstrate that aging leads to worse clinical outcomes, as well as lead to changes in microbiota composition and lower antibody production against C...
April 28, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28448603/evaluation-of-immunogenicity-and-protective-efficacy-of-recombinant-outer-membrane-proteins-of-haemophilus-parasuis-serovar-5-in-a-murine-model
#3
Miao Li, Ru-Jian Cai, Shuai Song, Zhi-Yong Jiang, Yan Li, Hong-Chao Gou, Pin-Pin Chu, Chun-Ling Li, Hua-Ji Qiu
Glässer's disease is an economically important infectious disease of pigs caused by Haemophilus parasuis. Few vaccines are currently available that could provide effective cross-protection against various serovars of H. parasuis. In this study, five OMPs (OppA, TolC, HxuC, LppC, and HAPS_0926) identified by bioinformatic approaches, were cloned and expressed as recombinant proteins. Antigenicity of the purified proteins was verified through Western blotting, and primary screening for protective potential was evaluated in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28448517/cryptic-chytridiomycosis-linked-to-climate-and-genetic-variation-in-amphibian-populations-of-the-southeastern-united-states
#4
Ariel A Horner, Eric A Hoffman, Matthew R Tye, Tyler D Hether, Anna E Savage
North American amphibians have recently been impacted by two major emerging pathogens, the fungus Batrachochytrium dendrobatidis (Bd) and iridoviruses in the genus Ranavirus (Rv). Environmental factors and host genetics may play important roles in disease dynamics, but few studies incorporate both of these components into their analyses. Here, we investigated the role of environmental and genetic factors in driving Bd and Rv infection prevalence and severity in a biodiversity hot spot, the southeastern United States...
2017: PloS One
https://www.readbyqxmd.com/read/28447236/the-history-of-an-unknown-dermatological-wax-collection-from-cluj-napoca-university-iuliu-hatieganu-romania
#5
Alexandru-Dumitru Tataru, Dan Tataru, Maria Grazia Roccia, Katlein França, Massimo Fioranelli, Torello Lotti
Among the dermatological wax collections across Europe, one of the latest created is the collection from Cluj-Napoca University, Romania. The initiator was Professor Coriolan Tataru and the moulage artist employed was Dr. Richard Hoffmann. Between the years 1923 and 1928, around 200 wax moulages were made, all realised after patients hospitalised in the clinic. The majority of cases represent the dermatological infectious pathology of that time: syphilis, cutaneous tuberculosis and mycetomas. Other interesting moulages represent genodermatoses, pelagra, different cutaneous cancers, and atypical aspects of common diseases like psoriasis and eczemas...
April 26, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28447193/ebola-and-marburg-virus-vaccines
#6
REVIEW
Pierce Reynolds, Andrea Marzi
The filoviruses, Ebola virus (EBOV), and Marburg virus (MARV), are among the most pathogenic viruses known to man and the causative agents of viral hemorrhagic fever outbreaks in Africa with case fatality rates of up to 90%. Nearly 30,000 infections were observed in the latest EBOV epidemic in West Africa; previous outbreaks were much smaller, typically only affecting less than a few hundred people. Compared to other diseases such as AIDS or Malaria with millions of cases annually, filovirus hemorrhagic fever (FHF) is one of the neglected infectious diseases...
April 26, 2017: Virus Genes
https://www.readbyqxmd.com/read/28446703/efficient-use-of-sentinel-sites-detection-of-invasive-honeybee-pests-and-diseases-in-the-uk
#7
Matt J Keeling, Samik Datta, Daniel N Franklin, Ivor Flatman, Andy Wattam, Mike Brown, Giles E Budge
Sentinel sites, where problems can be identified early or investigated in detail, form an important part of planning for exotic disease outbreaks in humans, livestock and plants. Key questions are: how many sentinels are required, where should they be positioned and how effective are they at rapidly identifying new invasions? The sentinel apiary system for invasive honeybee pests and diseases illustrates the costs and benefits of such approaches. Here, we address these issues with two mathematical modelling approaches...
April 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28445822/identification-of-the-inactivating-factors-and-mechanisms-exerted-on-ms2-coliphage-in-concentrated-synthetic-urine
#8
Wakana Oishi, Daisuke Sano, Loic Decrey, Syunsuke Kadoya, Tamar Kohn, Naoyuki Funamizu
Volume reduction (condensation) is a key for the practical usage of human urine as a fertilizer because it enables the saving of storage space and the reduction of transportation cost. However, concentrated urine may carry infectious disease risks resulting from human pathogens frequently present in excreta, though the survival of pathogens in concentrated urine is not well understood. In this study, the inactivation of MS2 coliphage, a surrogate for single-stranded RNA human enteric viruses, in concentrated synthetic urine was investigated...
April 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28445322/validation-of-prognostic-scores-to-predict-short-term-mortality-in-patients-with-hbv-related-acute-on-chronic-liver-failure-the-clif-c-of-is-superior-to-meld-clif-sofa-and-clif-c-aclf
#9
Ning Li, Chong Huang, Kang-Kang Yu, Qing Lu, Guang-Feng Shi, Jian-Ming Zheng
Acute-on-chronic liver failure (ACLF) in chronic hepatitis B (CHB) patients has a high short-term mortality. Identification of effective models to predict the short-term mortality may enable early intervention and improve patients' prognosis. We aim to assess the performance of the CLIF Consortium Organ Failure score (CLIF-C OFs), CLIF sequential organ failure assessment score (CLIF-SOFAs), CLIF Consortium ACLF score (CLIF-C ACLFs), ACLF grade, and model for end-stage liver disease score (MELDs) in predicting the short-term mortality in CHB patients with ACLF...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444127/hla-class-i-binding-prediction-via-convolutional-neural-networks
#10
Yeeleng S Vang, Xiaohui Xie
Motivation: Many biological processes are governed by protein-ligand interactions. One such example is the recognition of self and nonself cells by the immune system. This immune response process is regulated by the major histocompatibility complex (MHC) protein which is encoded by the human leukocyte antigen (HLA) complex. Understanding the binding potential between MHC and peptides can lead to the design of more potent, peptide-based vaccines and immunotherapies for infectious autoimmune diseases...
April 21, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28440501/transfer-of-cd11c-lamina-propria-mononuclear-phagocytes-from-post-infectious-irritable-bowel-syndrome-causes-mucosal-barrier-dysfunction-and-visceral-hypersensitivity-in-recipient-mice
#11
Ya-Jun Ren, Lei Zhang, Tao Bai, Hong-Lu Yu, Ying Li, Wei Qian, Si Jin, Zhi-Fan Xiong, Huan Wang, Xiao-Hua Hou
The role of low-grade inflammation in the development of post‑infectious irritable bowel syndrome (PI‑IBS) has attracted increasing attention. Abnormal CD11c+ mononuclear phagocytes, such as dendritic cells (DCs), macrophages, and monocytes, are involved in the disruption of immune tolerance in organisms, which can lead to the development of chronic inflammatory diseases. The present study tested the hypothesis that CD11c+ lamina propria mononuclear phagocytes (CD11c+ LPMPs) contribute to increased mucosal permeability and visceral hypersensitivity in a PI‑IBS mouse model...
April 25, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28438921/null-expectations-for-disease-dynamics-in-shrinking-habitat-dilution-or-amplification
#12
Christina L Faust, Andrew P Dobson, Nicole Gottdenker, Laura S P Bloomfield, Hamish I McCallum, Thomas R Gillespie, Maria Diuk-Wasser, Raina K Plowright
As biodiversity declines with anthropogenic land-use change, it is increasingly important to understand how changing biodiversity affects infectious disease risk. The dilution effect hypothesis, which points to decreases in biodiversity as critical to an increase in infection risk, has received considerable attention due to the allure of a win-win scenario for conservation and human well-being. Yet some empirical data suggest that the dilution effect is not a generalizable phenomenon. We explore the response of pathogen transmission dynamics to changes in biodiversity that are driven by habitat loss using an allometrically scaled multi-host model...
June 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28438917/disease-ecology-health-and-the-environment-a-framework-to-account-for-ecological-and-socio-economic-drivers-in-the-control-of-neglected-tropical-diseases
#13
A Garchitorena, S H Sokolow, B Roche, C N Ngonghala, M Jocque, A Lund, M Barry, E A Mordecai, G C Daily, J H Jones, J R Andrews, E Bendavid, S P Luby, A D LaBeaud, K Seetah, J F Guégan, M H Bonds, G A De Leo
Reducing the burden of neglected tropical diseases (NTDs) is one of the key strategic targets advanced by the Sustainable Development Goals. Despite the unprecedented effort deployed for NTD elimination in the past decade, their control, mainly through drug administration, remains particularly challenging: persistent poverty and repeated exposure to pathogens embedded in the environment limit the efficacy of strategies focused exclusively on human treatment or medical care. Here, we present a simple modelling framework to illustrate the relative role of ecological and socio-economic drivers of environmentally transmitted parasites and pathogens...
June 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28438915/conservation-development-and-the-management-of-infectious-disease-avian-influenza-in-china-2004-2012
#14
Tong Wu, Charles Perrings
There is growing evidence that wildlife conservation measures have mixed effects on the emergence and spread of zoonotic disease. Wildlife conservation has been found to have both positive (dilution) and negative (contagion) effects. In the case of avian influenza H5N1 in China, the focus has been on negative effects. Lakes and wetlands attracting migrating waterfowl have been argued to be disease hotspots. We consider the implications of waterfowl conservation for H5N1 infections in both poultry and humans between 2004 and 2012...
June 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28438910/lyme-disease-ecology-in-a-changing-world-consensus-uncertainty-and-critical-gaps-for-improving-control
#15
REVIEW
A Marm Kilpatrick, Andrew D M Dobson, Taal Levi, Daniel J Salkeld, Andrea Swei, Howard S Ginsberg, Anne Kjemtrup, Kerry A Padgett, Per M Jensen, Durland Fish, Nick H Ogden, Maria A Diuk-Wasser
Lyme disease is the most common tick-borne disease in temperate regions of North America, Europe and Asia, and the number of reported cases has increased in many regions as landscapes have been altered. Although there has been extensive work on the ecology and epidemiology of this disease in both Europe and North America, substantial uncertainty exists about fundamental aspects that determine spatial and temporal variation in both disease risk and human incidence, which hamper effective and efficient prevention and control...
June 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28438705/tigr4-strain-causes-more-severe-disease-than-wu2-strain-in-a-mouse-model-of-streptococcus-pneumoniae-meningitis-a-common-pathogenic-role-for-interferon-%C3%AE
#16
Belinda Yau, Lay Khoon Too, Helen J Ball, Nicholas H Hunt
Streptococcus pneumoniae (S. pneumoniae) meningitis causes debilitating neurological symptoms and acute fatalities in patients, and long-term neurological sequelae in some survivors. Current vaccines do not protect against all 94 known S. pneumoniae capsular serotypes, many of which are capable of causing pneumococcal meningitis (PM). We here compare the pathogenic outcomes of two clinically virulent isolates of S. pneumoniae, serotype 3 strain WU2 and serotype 4 strain TIGR4, in a murine model of PM. At an identical infectious dosage of 10(3) CFU administered via the intracerebroventricular route, significantly greater mortality, interleukin (IL)1β and IL6 production, and blood-brain barrier dysfunction occurred in TIGR4-induced PM compared to PM caused by WU2...
April 21, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28437843/a-bayesian-belief-network-model-assessing-the-risk-to-wastewater-workers-of-contracting-ebola-virus-disease-during-an-outbreak
#17
Joseph W Zabinski, Kelsey J Pieper, Jacqueline MacDonald Gibson
During an outbreak of Ebola virus disease (EVD), hospitals' connections to municipal wastewater systems may provide a path for patient waste bearing infectious viral particles to pass from the hospital into the wastewater treatment system, potentially posing risks to sewer and wastewater workers. To quantify these risks, we developed a Bayesian belief network model incorporating data on virus behavior and survival along with structural characteristics of hospitals and wastewater treatment systems. We applied the model to assess risks under several different scenarios of workers' exposure to wastewater for a wastewater system typical of a mid-sized U...
April 24, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28437093/a-pathogen-specific-cargo-delivery-platform-based-on-mesoporous-silica-nanoparticles
#18
Bastian Ruehle, Daniel L Clemens, Bai-Yu Lee, Marcus A Horwitz, Jeffrey I Zink
We present a synthetic approach to a highly pathogen-selective detection and delivery platform based on the in-teraction of an antibody nanovalve with a tetrasaccharide from the O-Antigen of the lipopolysaccharide of Francisella tularensis bacteria, a Tier 1 Select Agent of bioterrorism. Different design considerations are explored, and proof-of-concept for highly pathogen-specific cargo release from mesoporous silica nanoparticles is demonstrated by comparisons of the release of a signal transducer and model drug by LPS from Francisella tularensis vs...
April 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28437091/speeding-up-early-drug-discovery-in-antiviral-research-a-fragment-based-in-silico-approach-for-the-design-of-virtual-anti-hepatitis-c-leads
#19
Alejandro Speck-Planche, M Natalia Dias Soeiro Cordeiro
Hepatitis C constitutes an unresolved global health problem. This infectious disease is caused by the hepatotropic hepatitis C virus (HCV), and it can lead to the occurrence of life-threatening medical conditions such as cirrhosis and liver cancer. Nowadays, major clinical concerns have arisen due to the appearance of multidrug resistance (MDR), and the side effects especially associated with long-term treatments. In this work, we report the first multitasking model for quantitative structure-biological effect relationships (mtk-QSBER), focused on the simultaneous exploration of anti-HCV activity and in vitro safety profiles related to the absorption, distribution, metabolism, elimination, and toxicity (ADMET)...
April 24, 2017: ACS Combinatorial Science
https://www.readbyqxmd.com/read/28434763/computer-aided-discovery-of-two-novel-chalcone-like-compounds-active-and-selective-against-leishmania-infantum
#20
Marcelo N Gomes, Laura M Alcântara, Bruno J Neves, Cleber C Melo-Filho, Lucio H Freitas-Junior, Carolina B Moraes, Rui Ma, Scott G Franzblau, Eugene Muratov, Carolina Horta Andrade
Leishmaniasis are infectious diseases caused by parasites of genus Leishmania that affect affects 12 million people in 98 countries mainly in Africa, Asia, and Latin America. Effective treatments for this disease are urgently needed. In this study, we present a computer-aided approach to investigate a set of 32 recently synthesized chalcone and chalcone-like compounds to act as antileishmanial agents. As a result, nine most promising compounds and three potentially inactive compounds were experimentally evaluated against Leishmania infantum amastigotes and mammalian cells...
April 4, 2017: Bioorganic & Medicinal Chemistry Letters
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