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https://www.readbyqxmd.com/read/29245184/evaluation-of-the-use-of-novel-biomarkers-to-augment-antimicrobial-stewardship-program-activities
#1
Kayla R Stover, Rachel M Kenney, Travis S King, Alan E Gross
As antimicrobial stewardship increasingly receives worldwide attention for improving patient care by optimizing antimicrobial therapy, programs are evaluating new tools that may augment antimicrobial stewardship activities. Biomarkers are objective, accurate, and reproducible measures that provide information about medical conditions. A systematic literature search using PubMed/MEDLINE databases was performed to evaluate the use of novel biomarkers as additions to the antimicrobial stewardship armamentarium...
December 15, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/29245173/patient-perception-of-disease-related-symptoms-and-complications-in-relapsing-polychondritis
#2
Marcela A Ferrada, Peter C Grayson, Shubhasree Banerjee, Keith Sikora, Robert Colbert, Ninet Sinaii, James D Katz
OBJECTIVE: To assess patient-reported symptoms and burden of disease in relapsing polychondritis (RP). METHODS: Patients with RP completed a disease-specific online survey to identify symptoms attributed to illness. Patients were divided into subgroups based upon presence or absence of ear/nose, airway, or joint involvement. Pathway to diagnosis, treatment, and disease-related complications were assessed within each subgroup. RESULTS: Data from 304 respondents were included in this analysis...
December 15, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29245054/understanding-the-transmission-of-foot-and-mouth-disease-virus-at-different-scales
#3
REVIEW
David J Paton, Simon Gubbins, Donald P King
Foot-and-mouth disease (FMD) is highly infectious, but despite the large quantities of FMD virus released into the environment and the extreme susceptibility of host species to infection, transmission is not always predictable. Whereas virus spread in endemic settings is characterised by frequent direct and indirect animal contacts, incursions into FMD-free countries may be seeded by low-probability events such as fomite or wind-borne aerosol routes. There remains a void between data generated from small-scale experimental studies and our ability to reliably reconstruct transmission routes at different scales between farms, countries and regions...
December 12, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/29245049/effects-of-priming-with-cytokines-on-intracellular-survival-and-replication-of-rhodococcus-equi-in-equine-macrophages
#4
Londa J Berghaus, Steeve Giguère, Angela I Bordin, Noah D Cohen
Rhodococcus equi is a common cause of pneumonia in foals and an opportunistic pathogen in immunosuppressed people. The ability of R. equi to survive and replicate in macrophages is the basis of its pathogenicity. Limited knowledge about the role of cytokines in host defense against R. equi comes from studies in mice and the role of cytokines in intracellular survival of R. equi in equine macrophages is unknown. The objectives of this study were to determine the effect of priming with interferon (IFN)-γ, interleukin (IL)-1β, IL-4, IL-6, IL-10, or tumor necrosis factor (TNF)-α at various concentrations on intracellular survival of virulent R...
December 12, 2017: Cytokine
https://www.readbyqxmd.com/read/29245018/regulation-of-mavs-activation-through-post-translational-modifications
#5
REVIEW
Bingyu Liu, Chengjiang Gao
RLRs (including RIG-I and MDA5) are the main receptors that recognize cytoplasmic viral RNA. Upon binding of viral RNA, RIG-I and MDA5 recruit mitochondria-localized MAVS to activate the downstream antiviral signaling. MAVS forms prion-like aggregates on the mitochondria after virus infection. The regulatory mechanisms for MAVS activation have been defined in various studies. Here, we summarize the recent advances about MAVS roles in antiviral immunity, discuss the regulation of MAVS activation, and suggest interesting areas for future research...
December 12, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29244973/cooperativity-between-antibiotics-and-antiseptics-testing-the-bactericidal-effect
#6
S Jenull, H Laggner, I Hassl, B Velimirov, M Huettinger, N Zemann
OBJECTIVE: Treatment with antibiotics together with local application of antiseptics is common in wound care. We investigated the effectiveness of an antiseptic in two variations: octenidine (Oct) and octenidine+ (Oct+ with isotonic glucose addition). METHOD: Using the agar diffusion test with cultures of pathogenic Staphylococcus aureus and the non-pathogenic Bordetella petrii, we compared the effectiveness of octenidine to the classical antiseptics beta-isodona (povidone-iodine; PI), chlorhexidine (Chl) and taurolin (Tau) alone, and in combination with various common antibiotics to uncover cooperativity between antiseptics and antibiotics...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244969/treatment-of-open-upper-limb-injuries-with-infection-prevention-and-negative-pressure-wound-therapy-a-systematic-review
#7
E Ali, M Raghuvanshi
OBJECTIVE: Open upper limb injuries requiring soft reconstruction can pose a dilemma for trauma surgeons when considering the treatment options. The British Orthopaedic Association and British Association of Plastic, Reconstructive and Aesthetic Surgeons Standard for Trauma (BOAST) have addressed the management of severe open lower limb fractures with the creation of the BOAST 4 guidelines. However, no such gold standard exists for the treatment of open injuries of the upper limb. Furthermore, treatment of these injuries is often more difficult and requires complicated strategies...
December 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/29244882/%C3%AE-ii-spectrin-in-t-cells-is-involved-in-the-regulation-of-cell-cell-contact-leading-to-immunological-synapse-formation
#8
Justyna M Meissner, Aleksander F Sikorski, Tomasz Nawara, Jakub Grzesiak, Krzysztof Marycz, Dżamila M Bogusławska, Izabela Michalczyk, Marie-Christine Lecomte, Beata Machnicka
T-lymphocyte activation after antigen presentation to the T-Cell Receptor (TCR) is a critical step in the development of proper immune responses to infection and inflammation. This dynamic process involves reorganization of the actin cytoskeleton and signaling molecules at the cell membrane, leading to the formation of the Immunological Synapse (IS). The mechanisms regulating the formation of the IS are not completely understood. Nonerythroid spectrin is a membrane skeletal protein involved in the regulation of many cellular processes, including cell adhesion, signaling and actin cytoskeleton remodeling...
2017: PloS One
https://www.readbyqxmd.com/read/29244879/characterization-of-toxoplasma-degp-a-rhoptry-serine-protease-crucial-for-lethal-infection-in-mice
#9
Gaelle Lentini, Hiba El Hajj, Julien Papoin, Gamou Fall, Alexander W Pfaff, Nadim Tawil, Catherine Braun-Breton, Maryse Lebrun
During the infection process, Apicomplexa discharge their secretory organelles called micronemes, rhoptries and dense granules to sustain host cell invasion, intracellular replication and to modulate host cell pathways and immune responses. Herein, we describe the Toxoplasma gondii Deg-like serine protein (TgDegP), a rhoptry protein homologous to High temperature requirement A (HtrA) or Deg-like family of serine proteases. TgDegP undergoes processing in both types I and II strains as most of the rhoptries proteins...
2017: PloS One
https://www.readbyqxmd.com/read/29244872/the-ubiquitin-proteasome-system-is-required-for-african-swine-fever-replication
#10
Lucía Barrado-Gil, Inmaculada Galindo, Diego Martínez-Alonso, Sergio Viedma, Covadonga Alonso
Several viruses manipulate the ubiquitin-proteasome system (UPS) to initiate a productive infection. Determined viral proteins are able to change the host's ubiquitin machinery and some viruses even encode their own ubiquitinating or deubiquitinating enzymes. African swine fever virus (ASFV) encodes a gene homologous to the E2 ubiquitin conjugating (UBC) enzyme. The viral ubiquitin-conjugating enzyme (UBCv1) is expressed throughout ASFV infection and accumulates at late times post infection. UBCv is also present in the viral particle suggesting that the ubiquitin-proteasome pathway could play an important role at early ASFV infection...
2017: PloS One
https://www.readbyqxmd.com/read/29244871/inflammatory-monocytes-mediate-control-of-acute-alphavirus-infection-in-mice
#11
Kelsey C Haist, Kristina S Burrack, Bennett J Davenport, Thomas E Morrison
Chikungunya virus (CHIKV) and Ross River virus (RRV) are mosquito-transmitted alphaviruses that cause debilitating acute and chronic musculoskeletal disease. Monocytes are implicated in the pathogenesis of these infections; however, their specific roles are not well defined. To investigate the role of inflammatory Ly6ChiCCR2+ monocytes in alphavirus pathogenesis, we used CCR2-DTR transgenic mice, enabling depletion of these cells by administration of diptheria toxin (DT). DT-treated CCR2-DTR mice displayed more severe disease following CHIKV and RRV infection and had fewer Ly6Chi monocytes and NK cells in circulation and muscle tissue compared with DT-treated WT mice...
December 15, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29244863/a-parapoxviral-virion-protein-targets-the-retinoblastoma-protein-to-inhibit-nf-%C3%AE%C2%BAb-signaling
#12
Ponnuraj Nagendraprabhu, Sushil Khatiwada, Sabal Chaulagain, Gustavo Delhon, Daniel L Rock
Poxviruses have evolved multiple strategies to subvert signaling by Nuclear Factor κB (NF-κB), a crucial regulator of host innate immune responses. Here, we describe an orf virus (ORFV) virion-associated protein, ORFV119, which inhibits NF-κB signaling very early in infection (≤ 30 min post infection). ORFV119 NF-κB inhibitory activity was found unimpaired upon translation inhibition, suggesting that virion ORFV119 alone is responsible for early interference in signaling. A C-terminal LxCxE motif in ORFV119 enabled the protein to interact with the retinoblastoma protein (pRb) a multifunctional protein best known for its tumor suppressor activity...
December 15, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29244859/the-second-molecular-epidemiological-study-of-hiv-infection-in-mongolia-between-2010-and-2016
#13
Davaalkham Jagdagsuren, Tsunefusa Hayashida, Misao Takano, Erdenetuya Gombo, Setsen Zayasaikhan, Naomi Kanayama, Kiyoto Tsuchiya, Shinichi Oka
OBJECTIVE: Our previous 2005-2009 molecular epidemiological study in Mongolia identified a hot spot of HIV-1 transmission in men who have sex with men (MSM). To control the infection, we collaborated with NGOs to promote safer sex and HIV testing since mid-2010. In this study, we carried out the second molecular epidemiological survey between 2010 and 2016 to determine the status of HIV-1 infection in Mongolia. METHODS: The study included 143 new cases of HIV-1 infection...
2017: PloS One
https://www.readbyqxmd.com/read/29244854/morphological-switch-to-a-resistant-subpopulation-in-response-to-viral-infection-in-the-bloom-forming-coccolithophore-emiliania-huxleyi
#14
Miguel José Frada, Shilo Rosenwasser, Shifra Ben-Dor, Adva Shemi, Helena Sabanay, Assaf Vardi
Recognizing the life cycle of an organism is key to understanding its biology and ecological impact. Emiliania huxleyi is a cosmopolitan marine microalga, which displays a poorly understood biphasic sexual life cycle comprised of a calcified diploid phase and a morphologically distinct biflagellate haploid phase. Diploid cells (2N) form large-scale blooms in the oceans, which are routinely terminated by specific lytic viruses (EhV). In contrast, haploid cells (1N) are resistant to EhV. Further evidence indicates that 1N cells may be produced during viral infection...
December 15, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29244851/inhibition-of-merozoite-invasion-and-transient-de-sequestration-by-sevuparin-in-humans-with-plasmodium-falciparum-malaria
#15
Anna M Leitgeb, Prakaykaew Charunwatthana, Ronnatrai Rueangveerayut, Chirapong Uthaisin, Kamolrat Silamut, Kesinee Chotivanich, Patima Sila, Kirsten Moll, Sue J Lee, Maria Lindgren, Erik Holmer, Anna Färnert, Mpungu S Kiwuwa, Jens Kristensen, Christina Herder, Joel Tarning, Mats Wahlgren, Arjen M Dondorp
SEVERE MALARIA: Even with the best available treatment, the mortality from severe Plasmodium falciparum malaria remains high. Typical features at death are high parasite loads and obstructed micro- vasculature. Infected erythrocytes (IE) containing mature parasites bind to the host receptor heparan sulfate, which is also an important receptor for merozoite invasion. To block merozoite invasion has not previously been proposed as an adjunctive therapeutic approach but it may preclude the early expansion of an infection that else leads to exacerbated sequestration and death...
2017: PloS One
https://www.readbyqxmd.com/read/29244831/antimicrobial-susceptibility-and-molecular-epidemiology-of-clinical-enterobacter-cloacae-bloodstream-isolates-in-shanghai-china
#16
Su Wang, Shu-Zhen Xiao, Fei-Fei Gu, Jin Tang, Xiao-Kui Guo, Yu-Xing Ni, Jie-Ming Qu, Li-Zhong Han
BACKGROUND: Enterobacter cloacae is a major nosocomial pathogen causing bloodstream infections. We retrospectively conducted a study to assess antimicrobial susceptibility and phylogenetic relationships of E. cloacae bloodstream isolates in two tertiary university-affiliated hospitals in Shanghai, in order to facilitate managements of E. cloacae bloodstream infections and highlight some unknowns for future prevention. METHODS: Fifty-three non-duplicate E. cloacae bloodstream isolates were consecutively collected from 2013 to 2016...
2017: PloS One
https://www.readbyqxmd.com/read/29244806/cellular-selectivity-of-aav-serotypes-for-gene-delivery-in-neurons-and-astrocytes-by-neonatal-intracerebroventricular-injection
#17
Sean L Hammond, Ashley N Leek, Evan H Richman, Ronald B Tjalkens
The non-pathogenic parvovirus, adeno-associated virus (AAV), is an efficient vector for transgene expression in vivo and shows promise for treatment of brain disorders in clinical trials. Currently, there are more than 100 AAV serotypes identified that differ in the binding capacity of capsid proteins to specific cell surface receptors that can transduce different cell types and brain regions in the CNS. In the current study, multiple AAV serotypes expressing a GFP reporter (AAV1, AAV2/1, AAVDJ, AAV8, AAVDJ8, AAV9, AAVDJ9) were screened for their infectivity in both primary murine astrocyte and neuronal cell cultures...
2017: PloS One
https://www.readbyqxmd.com/read/29244796/rsv-bronchiolitis-versus-rhinovirus-difference-in-nasal-airway-microrna-profiles-and-nf%C3%AE%C2%BAb-signaling
#18
Kohei Hasegawa, Marcos Pérez-Losada, Claire E Hoptay, Samuel Epstein, Jonathan M Mansbach, Stephen J Teach, Pedro A Piedra, Carlos A Camargo, Robert J Freishtat
BACKGROUND: Although rhinovirus infection is associated with increased risks of acute and chronic respiratory outcomes during childhood compared with respiratory syncytial virus (RSV), the underlying mechanisms remain unclear. We aimed to determine differences in nasal airway microRNA profiles and their downstream effects between infants with rhinovirus and RSV bronchiolitis. METHODS: As part of multicenter cohort study of infants hospitalized for bronchiolitis, we examined nasal samples obtained from 16 infants with rhinovirus and 16 infants with RSV...
December 15, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29244792/tight-glycemic-control-in-critically-ill-pediatric-patients-a-meta-analysis-and-systematic-review-of-randomized-controlled-trials
#19
Yiyang Zhao, Yang Wu, Bo Xiang
BACKGROUND: There still are controversies in the impact of tight glycemic control (TGC) in critically ill children. The aim of this study was to assess the benefits and risks of TGC compared with conventional glycemic control (CGC) in critically ill pediatric patients admitted to the pediatric intensive care unit (PICU) by using data retrieved from randomized controlled trials (RCTs). METHOD: EMBASE, CNKI, PubMed and the Cochrane Database were searched for RCTs comparing TGC with CGC in critically ill children in PICU...
December 15, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29244784/factors-associated-to-inpatient-mortality-rates-in-type-2-diabetic-patients-a-cross-sectional-analytical-study-in-three-peruvian-hospitals
#20
Noé Atamari-Anahui, Franklin W Martinez-Ninanqui, Liz Paucar-Tito, Luz Morales-Concha, Alejandra Miranda-Chirau, Marco Antonio Gamarra-Contreras, Carlos Antonio Zea-Nuñez, Christian R Mejia
INTRODUCTION: Diabetes mortality has increased in recent years. In Peru, there are few studies on in-hospital mortality due to type 2 diabetes in the provinces. OBJECTIVE: To determine factors associated to hospital mortality in patients with diabetes mellitus type 2 in three hospitals from Cusco-Peru. METHODS: An analytical cross-sectional study was performed. All patients with diabetes mellitus type 2 hospitalized in the city of Cusco during the 2016 were included...
December 5, 2017: Medwave
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