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https://www.readbyqxmd.com/read/28811345/inhibitors-of-the-histone-methyltransferases-ezh2-1-induce-a-potent-antiviral-state-and-suppress-infection-by-diverse-viral-pathogens
#1
Jesse H Arbuckle, Paul J Gardina, David N Gordon, Heather D Hickman, Jonathan W Yewdell, Theodore C Pierson, Timothy G Myers, Thomas M Kristie
Epigenetic regulation is based on a network of complexes that modulate the chromatin character and structure of the genome to impact gene expression, cell fate, and development. Thus, epigenetic modulators represent novel therapeutic targets used to treat a range of diseases, including malignancies. Infectious pathogens such as herpesviruses are also regulated by cellular epigenetic machinery, and epigenetic therapeutics represent a novel approach used to control infection, persistence, and the resulting recurrent disease...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28811074/management-of-multidrug-resistant-gram-negative-bacilli-infections-in-solid-organ-transplant-recipients-set-gesitra-seimc-reipi-recommendations
#2
REVIEW
J M Aguado, J T Silva, M Fernández-Ruiz, E Cordero, J Fortún, C Gudiol, L Martínez-Martínez, E Vidal, L Almenar, B Almirante, R Cantón, J Carratalá, J J Caston, E Cercenado, C Cervera, J M Cisneros, M G Crespo-Leiro, V Cuervas-Mons, J Elizalde-Fernández, M C Fariñas, J Gavaldà, M J Goyanes, B Gutiérrez-Gutiérrez, D Hernández, O Len, R López-Andujar, F López-Medrano, P Martín-Dávila, M Montejo, A Moreno, A Oliver, A Pascual, E Pérez-Nadales, A Román-Broto, R San-Juan, D Serón, A Solé-Jover, M Valerio, P Muñoz, J Torre-Cisneros
Solid organ transplant (SOT) recipients are especially at risk of developing infections by multidrug resistant (MDR) Gram-negative bacilli (GNB), as they are frequently exposed to antibiotics and the healthcare setting, and are regulary subject to invasive procedures. Nevertheless, no recommendations concerning prevention and treatment are available. A panel of experts revised the available evidence; this document summarizes their recommendations: (1) it is important to characterize the isolate's phenotypic and genotypic resistance profile; (2) overall, donor colonization should not constitute a contraindication to transplantation, although active infected kidney and lung grafts should be avoided; (3) recipient colonization is associated with an increased risk of infection, but is not a contraindication to transplantation; (4) different surgical prophylaxis regimens are not recommended for patients colonized with carbapenem-resistant GNB; (5) timely detection of carriers, contact isolation precautions, hand hygiene compliance and antibiotic control policies are important preventive measures; (6) there is not sufficient data to recommend intestinal decolonization; (7) colonized lung transplant recipients could benefit from prophylactic inhaled antibiotics, specially for Pseudomonas aeruginosa; (8) colonized SOT recipients should receive an empirical treatment which includes active antibiotics, and directed therapy should be adjusted according to susceptibility study results and the severity of the infection...
July 26, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28807478/role-of-lipid-mediators-in-the-regulation-of-oxidative-stress-and-inflammatory-responses-in-dairy-cattle
#3
REVIEW
Vengai Mavangira, Lorraine M Sordillo
Periparturient dairy cows experience an increased incidence and severity of several inflammatory-based diseases such as mastitis and metritis. Factors associated with the physiological adaptation to the onset of lactation can impact the efficiency of the inflammatory response at a time when it is most needed to eliminate infectious pathogens that cause these economically important diseases. Oxidative stress, for example, occurs when there is an imbalance between the production of oxygen radicals during periods of high metabolic demand and the reduced capabilities of the host's antioxidant defenses...
August 2, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28806695/use-of-peptide-aptamers-cationic-peptides-and-artificial-zinc-finger-proteins-to-generate-resistance-to-plant-viruses
#4
REVIEW
Takashi Sera
Various RNA/DNA viruses have caused severe infectious diseases in plants as well as animals, including humans, and been a threat to the production of agricultural crops. Therefore, prevention of plant virus infections is a major objective in crop protection. One attractive approach is to inhibit functions of viral proteins responsible for virus infections. In this review, I describe the status using such approaches to confer virus resistance to plants by three types of peptides/proteins: peptide aptamers, artificial zinc finger proteins and acidic peptides...
August 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28806140/adherent-invasive-e-coli-enhances-colonic-hypersensitivity-and-p2x-receptors-expression-during-post-infectious-period
#5
Amandine Lashermes, Ludivine Boudieu, Julie Barbier, Benoit Sion, Agathe Gelot, Nicolas Barnich, Denis Ardid, Frédéric Antonio Carvalho
Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD) are related gastrointestinal disorders characterized by abdominal pain associated with colonic hypersensitivity (CHS). Studies in humans have reported an abnormal colonization of Adherent-Invasive E. coli (AIEC) in the ileum of Crohn's disease (CD) patients associated with overexpression of the bacterial colonizing receptor CEACAM6. The aim of the present study was to investigate whether AIEC reference strain LF82 could induce intestinal impairment during infectious and/or post-infectious periods and subsequently the development of CHS...
August 14, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28805017/estimating-the-between-farm-transmission-rates-for-highly-pathogenic-avian-influenza-subtype-h5n1-epidemics-in-bangladesh-between-2007-and-2013
#6
A Ssematimba, I Okike, G M Ahmed, M Yamage, G J Boender, T J Hagenaars, B Bett
Highly Pathogenic Avian Influenza (HPAI) is classified by the World Organization for Animal Health as one of the notifiable diseases. Its occurrence is associated with severe socio-economic impacts and is also zoonotic. Bangladesh HPAI epidemic data for the period between 2007 and 2013 were obtained and split into epidemic waves based on the time lag between outbreaks. By assuming the number of newly infected farms to be binomially distributed, we fit a Generalized Linear Model to the data to estimate between-farm transmission rates (β)...
August 14, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28804005/performance-assessment-of-the-saps-ii-and-sofa-scoring-systems-in-hanta-virus-hemorrhagic-fever-with-renal-syndrome
#7
Zhenjun Yu, Ni Zhou, Ali Li, Jie Chen, Huazhong Chen, Zebao He, Fei Yan, Haihong Zhao, Jiansheng Zhu
BACKGROUND: Hemorrhagic Fever with Renal Syndrome (HFRS), caused by the hantavirus, is a natural infectious disease characterized by fever, hemorrhage and renal damage. China is the most severely endemic area for HFRS in the world. In recent years, critical scoring systems based on quantitative classification have become an important clinical tool for predicting and evaluating the prognosis of critical illness, and provide guidelines for clinical practice. METHODS: The sample comprised 384 patients with HFRS treated in the Taizhou Hospital from January 2006 to February 2017...
August 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28802396/host-genetics-in-susceptibility-to-and-severity-of-mycobacterial-diseases
#8
REVIEW
A S Apt, N N Logunova, T K Kondratieva
The genetic analysis of susceptibility to infections has proven to be extremely useful for identification of key cells, molecules, pathways, and genes involved in the battle between two genomes - the essence of the infectious process. This is particularly true for tuberculosis and other mycobacterial infections which traditionally attracted much attention from both immunologists and geneticists. In this short review, we observe results of genetic studies performed in human populations and in animal models and compare relative input of forward and reverse genetic approaches in our knowledge about genetic control of and immune responses to mycobacterial infections...
September 2017: Tuberculosis
https://www.readbyqxmd.com/read/28801812/a%C3%A2-synopsis-of-the-history-of-hansen-s-disease
#9
Raissa Gonçalves Couto Dal Secco, Katlein França, David Castillo, Mana AlHarbi, Torello Lotti, Massimo Fioranelli, Maria Grazia Roccia
Leprosy is a contagious infectious disease caused by the bacillus Mycobacterium leprae. This microorganism was discovered by Dr. Gerhard Hansen, and the illness was then baptized as Hansen's disease. For a long time, Hansen's disease was thought to be hereditary-a curse or a punishment from God. The disease affects skin and nerves and can cause severe damage. Due to its destructive effects, leprosy has caused fear, segregation, and prejudice in all societies since Biblical times. Patients with Hansen's disease have not been treated humanely around the world throughout the ages...
August 11, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28801740/a-statistical-classifier-to-support-diagnose-meningitis-in-less-developed-areas-of-brazil
#10
Viviane-Maria Lélis, Eduardo Guzmán, María-Victoria Belmonte
This paper describes the development of statistical classifiers to help diagnose meningococcal meningitis, i.e. the most sever, infectious and deadliest type of this disease. The goal is to find a mechanism able to determine whether a patient has this type of meningitis from a set of symptoms that can be directly observed in the earliest stages of this pathology. Currently, in Brazil, a country that is heavily affected by meningitis, all suspected cases require immediate hospitalization and the beginning of a treatment with invasive tests and medicines...
August 11, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28800967/role-of-prion-protein-in-premature-senescence-of-human-fibroblasts
#11
Emmanuelle Boilan, Virginie Winant, Elise Dumortier, Benaissa ElMoualij, Pascale Quatresooz, Heinz D Osiewacz, Florence Debacq-Chainiaux, Olivier Toussaint
Prion protein (PrP) is essentially known for its capacity to induce neurodegenerative prion diseases in mammals caused by a conformational change in its normal cellular isoform (PrP(C)) into an infectious and disease-associated misfolded form, called scrapie isoform (PrP(Sc)). Although its sequence is highly conserved, less information is available on its physiological role under normal conditions. However, increasing evidence supports a role for PrP(C) in the cellular response to oxidative stress. In the present study, a new link between PrP and senescence is highlighted...
August 8, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28799413/an-initial-open-trial-of-a-brief-behavioral-activation-treatment-for-depression-and-medication-adherence-in-hiv-infected-patients
#12
Matthew T Tull, Christopher R Berghoff, Joseph R Bardeen, Michelle Schoenleber, Deborah J Konkle-Parker
Advances in HIV treatment through highly active antiretroviral therapy (HAART) have led to a steady decline in HIV-related mortality rates. However, HAART requires adherence to strict and often complicated medication regimens, and nonadherence to HAART can significantly decrease its effectiveness. Depression has consistently shown a robust association with medication nonadherence; consequently, numerous psychological interventions have been developed to target depression and increase medication adherence among HIV-infected individuals...
August 1, 2017: Behavior Modification
https://www.readbyqxmd.com/read/28797710/a-bayesian-system-to-detect-and-characterize-overlapping-outbreaks
#13
John M Aronis, Nicholas E Millett, Michael M Wagner, Fuchiang Tsui, Ye Ye, Jeffrey P Ferraro, Peter J Haug, Per H Gesteland, Gregory F Cooper
Outbreaks of infectious diseases such as influenza are a significant threat to human health. Because there are different strains of influenza which can cause independent outbreaks, and influenza can affect demographic groups at different rates and times, there is a need to recognize and characterize multiple outbreaks of influenza. This paper describes a Bayesian system that uses data from emergency department patient care reports to create epidemiological models of overlapping outbreaks of influenza. Clinical findings are extracted from patient care reports using natural language processing...
August 7, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28797493/allergic-and-noninvasive-infectious-pulmonary-aspergillosis-syndromes
#14
REVIEW
Eavan G Muldoon, Mary E Strek, Karen C Patterson
Aspergillus spp are ubiquitous in the environment, and inhalation of Aspergillus spores is unavoidable. An intact immune system, with normal airway function, protects most people from disease. Globally, however, the toll from aspergillosis is high. The literature has largely focused on invasive aspergillosis, yet the burden in terms of chronicity and prevalence is higher for noninvasive Aspergillus conditions. This article discusses allergic aspergilloses and provides an update on the diagnosis and management of allergic bronchopulmonary aspergillosis, including in patients with cystic fibrosis, and an update on severe asthma with fungal sensitization...
September 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28796756/notes-from-the-field-increase-in-coccidioidomycosis-california-2016
#15
Gail Sondermeyer Cooksey, Alyssa Nguyen, Kirsten Knutson, Farzaneh Tabnak, Kaitlin Benedict, Orion McCotter, Seema Jain, Duc Vugia
Coccidioidomycosis, or Valley Fever, is an infectious disease caused by inhalation of Coccidioides spp. spores (1). This soil-dwelling fungus is endemic in the southwestern United States, with most (97%) U.S. cases reported from Arizona and California (1,2). Following an incubation period of 1-3 weeks, symptomatic patients most often experience self-limited, influenza-like symptoms, but coccidioidomycosis also can lead to severe pulmonary disease and to rare cases of disseminated disease, including meningitis (1)...
August 11, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28792090/distinct-activation-mechanisms-trigger-the-trypanocidal-activity-of-dna-damaging-prodrugs
#16
Emma Louise Meredith, Ambika Kumar, Aya Konno, Joanna Szular, Sam Alsford, Karin Seifert, David Horn, Shane R Wilkinson
Quinone-based compounds have been exploited to treat infectious diseases and cancer, with such chemicals often functioning as inhibitors of key metabolic pathways or as prodrugs. Here, we screened an aziridinyl-1,4-benzoquinone (ABQ) library against the causative agents of trypanosomiasis, and cutaneous leishmaniasis, identifying several potent structures that exhibited EC50 values of <100 nM. However, these compounds also displayed significant toxicity towards mammalian cells indicating that they are not suitable therapies for systemic infections...
August 9, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28791545/microbial-cyclophilins-specialized-functions-in-virulence-and-beyond
#17
REVIEW
Maria Dimou, Anastasia Venieraki, Panagiotis Katinakis
Cyclophilins belong to the superfamily of peptidyl-prolyl cis/trans isomerases (PPIases, EC: 5.2.1.8), the enzymes that catalyze the cis/trans isomerization of peptidyl-prolyl peptide bonds in unfolded and partially folded polypeptide chains and native state proteins. Cyclophilins have been extensively studied, since they are involved in multiple cellular processes related to human pathologies, such as neurodegenerative disorders, infectious diseases, and cancer. However, the presence of cyclophilins in all domains of life indicates a broader biological importance...
August 8, 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28791493/risk-of-infectious-diseases-among-first-degree-relatives-of-transplant-recipients-who-develop-cmv-infection-is-the-infectious-phenotype-inheritable
#18
C Ekenberg, I P Lodding, N E Wareham, S S Sørensen, H Sengeløv, F Gustafsson, A Rasmussen, M Perch, J D Lundgren, M Helleberg
Transplant recipients are at high risk of cytomegalovirus (CMV) infection. Mechanisms explaining the variation in risk of infections are far from fully elucidated. We hypothesised that host genetics explains part of the variation in risk of infection and examined if relatives of recipients with CMV infection have higher rates of severe infections compared to relatives of recipients without this infectious phenotype. In a register-based study, we included first-degree relatives of transplant recipients and examined the risk of hospitalisation due to overall infection or viral infection and risk of death among relatives of recipients who developed CMV infection within the first year of transplantation compared to relatives of recipients without CMV...
August 8, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28791163/nonlinear-disease-tolerance-curves-reveal-distinct-components-of-host-responses-to-viral-infection
#19
Vanika Gupta, Pedro F Vale
The ability to tolerate infection is a key component of host defence and offers potential novel therapeutic approaches for infectious diseases. To yield successful targets for therapeutic intervention, it is important that the analytical tools employed to measure disease tolerance are able to capture distinct host responses to infection. Here, we show that commonly used methods that estimate tolerance as a linear relationship should be complemented with more flexible, nonlinear estimates of this relationship which may reveal variation in distinct components such as host vigour, sensitivity to increases in pathogen loads, and the severity of the infection...
July 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28791025/the-ido-ahr-axis-controls-th17-treg-immunity-in-a-pulmonary-model-of-fungal-infection
#20
Eliseu Frank de Araújo, Claudia Feriotti, Nayane Alves de Lima Galdino, Nycolas Willian Preite, Vera Lúcia Garcia Calich, Flávio Vieira Loures
In infectious diseases, the enzyme indoleamine 2,3 dioxygenase-1 (IDO1) that catalyzes the tryptophan (Trp) degradation along the kynurenines (Kyn) pathway has two main functions, the control of pathogen growth by reducing available Trp and immune regulation mediated by the Kyn-mediated expansion of regulatory T (Treg) cells via aryl hydrocarbon receptor (AhR). In pulmonary paracoccidioidomycosis (PCM) caused by the dimorphic fungus Paracoccidioides brasiliensis, IDO1 was shown to control the disease severity of both resistant and susceptible mice to the infection; however, only in resistant mice, IDO1 is induced by TGF-β signaling that confers a stable tolerogenic phenotype to dendritic cells (DCs)...
2017: Frontiers in Immunology
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