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https://www.readbyqxmd.com/read/27907009/moderate-levels-of-pre-treatment-hiv-1-antiretroviral-drug-resistance-detected-in-the-first-south-african-national-survey
#1
Kim Steegen, Sergio Carmona, Michelle Bronze, Maria A Papathanasopoulos, Gert van Zyl, Dominique Goedhals, William MacLeod, Ian Sanne, Wendy S Stevens
BACKGROUND: In order to assess the level of transmitted and/or pre-treatment antiretroviral drug resistance to HIV-1, the World Health Organization (WHO) recommends that regular surveys are conducted. This study's objective was to assess the frequency of HIV-1 antiretroviral drug resistance in patients initiating antiretroviral treatment (ART) in the public sector throughout South Africa. METHODS: A prospective cross-sectional survey was conducted using probability proportional to size sampling...
2016: PloS One
https://www.readbyqxmd.com/read/27906650/structure-of-the-70s-ribosome-from-human-pathogen-staphylococcus-aureus
#2
Iskander Khusainov, Quentin Vicens, Anthony Bochler, François Grosse, Alexander Myasnikov, Jean-François Ménétret, Johana Chicher, Stefano Marzi, Pascale Romby, Gulnara Yusupova, Marat Yusupov, Yaser Hashem
Comparative structural studies of ribosomes from various organisms keep offering exciting insights on how species-specific or environment-related structural features of ribosomes may impact translation specificity and its regulation. Although the importance of such features may be less obvious within more closely related organisms, their existence could account for vital yet species-specific mechanisms of translation regulation that would involve stalling, cell survival and antibiotic resistance. Here, we present the first full 70S ribosome structure from Staphylococcus aureus, a Gram-positive pathogenic bacterium, solved by cryo-electron microscopy...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27903240/central-line-associated-bloodstream-infections-in-a-tertiary-care-children-s-university-hospital-a-prospective-study
#3
Elisabetta Venturini, Carlotta Montagnani, Alessandra Benni, Sabrina Becciani, Klaus Peter Biermann, Salvatore De Masi, Elena Chiappini, Maurizio de Martino, Luisa Galli
BACKGROUND: The central-line associated bloodstream infections (CLABSI) are the most common healthcare-associated infections in childhood. Despite the international data available on healthcare-associated infections in selected groups of patients, there is a lack of large and good quality studies. The present survey is the first prospective study monitoring for 6 months the occurrence of central-line associated bloodstream infections in all departments of an Italian tertiary care children's university hospital...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27894749/the-microbiology-of-diabetic-foot-infections-in-patients-recently-treated-with-antibiotic-therapy-a-prospective-study-from-india
#4
Ashu Rastogi, Suja Sukumar, Abhishek Hajela, Soham Mukherjee, Pinaki Dutta, Sanjay Kumar Bhadada, Anil Bhansali
AIM: Clinicians often treat clinically infected diabetic foot ulcers without information from cultures of the wound. The results of wound cultures may also be affected by previous antibiotic therapy. Thus, we aimed to study the microbial isolates, and antimicrobial sensitivity of previously treated patients with a clinically infected DFU. RESEARCH DESIGN AND METHODS: 293 consecutive patients with clinically infected DFU on prior antimicrobial treatment within the immediate past few days for a duration greater than one week were evaluated for microbial etiology, antibiotic sensitivity and final outcomes...
November 9, 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/27892925/a-mouse-model-for-mers-coronavirus-induced-acute-respiratory-distress-syndrome
#5
Adam S Cockrell, Boyd L Yount, Trevor Scobey, Kara Jensen, Madeline Douglas, Anne Beall, Xian-Chun Tang, Wayne A Marasco, Mark T Heise, Ralph S Baric
Middle East respiratory syndrome coronavirus (MERS-CoV) is a novel virus that emerged in 2012, causing acute respiratory distress syndrome (ARDS), severe pneumonia-like symptoms and multi-organ failure, with a case fatality rate of ∼36%. Limited clinical studies indicate that humans infected with MERS-CoV exhibit pathology consistent with the late stages of ARDS, which is reminiscent of the disease observed in patients infected with severe acute respiratory syndrome coronavirus. Models of MERS-CoV-induced severe respiratory disease have been difficult to achieve, and small-animal models traditionally used to investigate viral pathogenesis (mouse, hamster, guinea-pig and ferret) are naturally resistant to MERS-CoV...
November 28, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27872016/tuberculosis-eradication-versus-control
#6
Marco Schito, Debra Hanna, Alimuddin Zumla
According to the World Health Organization (WHO), 10.4 million people succumbed to tuberculosis (TB) in 2015 and is now the number one cause of death world-wide from a preventable infectious disease. Bold vision is needed from global leaders and plans have been proposed to end the TB epidemic. However enthusiasm must be matched by tangible and achievable goals based on the science and available funding. In order to reach the target and goals set by the WHO's End-TB Strategy, the challenges for TB eradication need to be addressed...
November 18, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27860197/crispr-cas9-the-ultimate-weapon-to-battle-infectious-diseases
#7
REVIEW
M Doerflinger, W Forsyth, G Ebert, M Pellegrini, M J Herold
Infectious diseases are a leading cause of death worldwide. Novel therapeutics are urgently required to treat multidrug-resistant organisms such as Mycobacterium tuberculosis and to mitigate morbidity and mortality caused by acute infections such as malaria and dengue fever virus as well as chronic infections such as human immunodeficiency virus-1 and hepatitis B virus. The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) system, which has revolutionized biomedical research, holds great promise for the identification and validation of novel drug targets...
November 16, 2016: Cellular Microbiology
https://www.readbyqxmd.com/read/27842444/lung-transplantation-for-cystic-fibrosis-an-update
#8
Cecilia Chaparro, Shaf Keshavjee
Today cystic fibrosis (CF) patients are surviving longer but ultimately the lung disease will progress despite new treatments. Lung transplantation, a life saving procedure, initially was not offered to CF patients due to their infectious complications and complications related to their multisystem disease. After the first CF patients were transplanted it appeared clear that CF patients had excellent outcomes. Infectious complications with multi-resistant bacteria are still a challenge for some patients which shortens survival in some cases...
December 2016: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/27836033/on-farm-starling-populations-and-other-environmental-and-management-factors-associated-with-the-presence-of-cefotaxime-and-ciprofloxacin-resistant-e-coli-among-dairy-cattle-in-ohio
#9
Genet A Medhanie, David L Pearl, Scott A McEwen, Michele T Guerin, Claire M Jardine, Jennifer Schrock, Jeffrey T LeJeune
Wild birds that forage around livestock facilities have been implicated as vectors of antimicrobial resistant organisms. Although antimicrobial resistant bacteria have been isolated from European starlings (Sturnus vulgaris), their role in the dissemination of antimicrobial resistant elements in livestock facilities needs further investigation. To determine whether on-farm starling density and other factors were associated with the presence of cefotaxime and ciprofloxacin resistant E. coli among dairy cows in Ohio, bovine fecal pats from 150 farms were tested for the presence of cefotaxime and ciprofloxacin resistant E...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27833601/synergistic-nisin-polymyxin-combinations-for-the-control-of-pseudomonas-biofilm-formation
#10
Des Field, Nynke Seisling, Paul D Cotter, R P Ross, Colin Hill
The emergence and dissemination of multi-drug resistant pathogens is a global concern. Moreover, even greater levels of resistance are conferred on bacteria when in the form of biofilms (i.e., complex, sessile communities of bacteria embedded in an organic polymer matrix). For decades, antimicrobial peptides have been hailed as a potential solution to the paucity of novel antibiotics, either as natural inhibitors that can be used alone or in formulations with synergistically acting antibiotics. Here, we evaluate the potential of the antimicrobial peptide nisin to increase the efficacy of the antibiotics polymyxin and colistin, with a particular focus on their application to prevent biofilm formation of Pseudomonas aeruginosa...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27828770/responding-to-a-zoonotic-emergency-with-multi-omics-research-pentatrichomonas-hominis-hydrogenosomal-protein-characterization-with-use-of-rna-sequencing-and-proteomics
#11
Yi-Kai Fang, Kun-Yi Chien, Kuo-Yang Huang, Wei-Hung Cheng, Fu-Mann Ku, Rose Lin, Ting-Wen Chen, Po-Jung Huang, Cheng-Hsun Chiu, Petrus Tang
Pentatrichomonas hominis is an anaerobic flagellated protist that colonizes the large intestine of a number of mammals, including cats, dogs, nonhuman primates, and humans. The wide host range of this organism is alarming and suggests a rising zoonotic emergency. However, knowledge on in-depth biology of this protist is still limited. Similar to the human pathogen, Trichomonas vaginalis, P. hominis possesses hydrogenosomes instead of mitochondria. Studies in T. vaginalis indicated that hydrogenosome is essential for cell survival and associated with numerous pivotal biological functions, including drug resistance...
November 2016: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/27798695/genotypic-and-phenotypic-characterization-of-stenotrophomonas-maltophilia-strains-from-a-pediatric-tertiary-care-hospital-in-serbia
#12
Haowa Madi, Jovanka Lukić, Zorica Vasiljević, Marjan Biočanin, Milan Kojić, Branko Jovčić, Jelena Lozo
BACKGROUND: Stenotrophomonas maltophilia is an environmental bacterium and an opportunistic pathogen usually associated with healthcare-associated infections, which has recently been recognized as a globally multi-drug resistant organism. The aim of this study was genotyping and physiological characterization of Stenotrophomonas maltophilia isolated in a large, tertiary care pediatric hospital in Belgrade, Serbia, hosting the national reference cystic fibrosis (CF) center for pediatric and adult patients...
2016: PloS One
https://www.readbyqxmd.com/read/27790437/ventilator-associated-pneumonia-in-an-infant-caused-by-stenotrophomonas-maltophila-a-case-report
#13
Neelima Angaali, Nina Dutta Roy, Sudharshan Raj Chitgupikar, Preeti Subramanian, Jaya Lakshmi Pabbati
Stenotrophomonas maltophila (S.maltophila) is an aerobic Gram-negative bacillus that is a frequent colonizer of fluids used in the hospital setting. The organism is known to cause life threatening infections in immuno-compromised patients especially in those who are neutropenic, on chemotherapy or on broad spectrum antibiotics. We report a case of ventilator associated pneumonia caused by Stenotrophomonas maltophila in a two-month old infant who later developed multi organ dysfunction syndrome. In seriously ill paediatric patients, S...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27775708/instrumented-cardiac-microphysiological-devices-via-multimaterial-three-dimensional-printing
#14
Johan U Lind, Travis A Busbee, Alexander D Valentine, Francesco S Pasqualini, Hongyan Yuan, Moran Yadid, Sung-Jin Park, Arda Kotikian, Alexander P Nesmith, Patrick H Campbell, Joost J Vlassak, Jennifer A Lewis, Kevin K Parker
Biomedical research has relied on animal studies and conventional cell cultures for decades. Recently, microphysiological systems (MPS), also known as organs-on-chips, that recapitulate the structure and function of native tissues in vitro, have emerged as a promising alternative. However, current MPS typically lack integrated sensors and their fabrication requires multi-step lithographic processes. Here, we introduce a facile route for fabricating a new class of instrumented cardiac microphysiological devices via multimaterial three-dimensional (3D) printing...
October 24, 2016: Nature Materials
https://www.readbyqxmd.com/read/27771149/esbl-producing-gram-negative-organisms-in-the-healthcare-environment-as-a-source-of-genetic-material-for-resistance-in-human-infections
#15
M Muzslay, G Moore, N Alhussaini, A P R Wilson
BACKGROUND: The increasing prevalence of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in the healthcare setting and in the community despite established infection control guidelines indicates that these microorganisms may possess survival strategies that allow them to persist in the environment. AIMS: To determine the extent and variation in endemic ESBL-carrying species in different ward environments, and to investigate the potential for cephalosporin resistance to be transferred from environmental isolates to human pathogens...
September 17, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/27758873/systems-analysis-uncovers-inflammatory-th-tc17-driven-modules-during-acute-gvhd-in-monkey-and-man
#16
Scott N Furlan, Benjamin Watkins, Victor Tkachev, Sarah Cooley, Angela Panoskaltsis-Mortari, Kayla Betz, Melanie Brown, Daniel J Hunt, John B Schell, Katie Zeleski, Alison Yu, Cindy Giver, Edmund Waller, Jeffrey S Miller, Bruce R Blazar, Leslie S Kean
One of the central challenges of transplantation is the development of alloreactivity despite the use of multi-agent immunoprophylaxis. Effective control of this immune-suppression-resistant T cell activation represents one of the key unmet needs in the fields of both solid organ and hematopoietic stem cell transplant (HCT). To address this unmet need, we have used a highly-translational non-human primate model to interrogate the transcriptional signature of T cells during Breakthrough Acute GVHD that occurs in the setting of clinically-relevant immune suppression and compared this to the Hyperacute GVHD, that develops in unprophylaxed or sub-optimally prophylaxed transplant recipients...
October 6, 2016: Blood
https://www.readbyqxmd.com/read/27755339/institutional-and-seasonal-variations-in-the-incidence-and-causative-organisms-for-post-traumatic-wound-infections-and-osteomyelitis-after-open-fractures
#17
H Claude Sagi, David Donohue, Seth Cooper, David P Barei, Justin Siebler, Michael T Archdeacon, Marcus Sciadini, Michelle Romeo, Patrick F Bergin, Thomas Higgins, Hassan Mir
OBJECTIVES: The current literature focuses on wound severity, time to debridement and antibiotic administration with respect to risk of infection after open fracture. The purpose of this analysis was to determine if either the incidence of post-traumatic infection or causative organism varies with treating institution or the season in which the open fracture occurred. DESIGN: Retrospective review. SETTING: Seven level-one regional referral trauma centers located in each of the seven climatic regions of the continental United States (Northwest; High Plains; Midwest/Ohio Valley; New England/Mid-Atlantic; Southeast; South; and Southwest)...
October 7, 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27752395/efficacy-and-safety-of-bolus-5-fluorouracil-and-l-leucovorin-as-salvage-chemotherapy-for-oral-fluoropyrimidine-resistant-unresectable-or-recurrent-gastric-cancer-a-single-center-experience
#18
Tetsuhito Muranaka, Satoshi Yuki, Yoshito Komatsu, Kentaro Sawada, Kazuaki Harada, Yasuyuki Kawamoto, Hiroshi Nakatsumi, Naoya Sakamoto
PURPOSE: The International Organization for Standardization-5fluorouracil (FU) 10 trial found that bolus 5-FU and l-leucovorin was not inferior to S-1 in the treatment of gastric cancer (GC). Continuous 5-FU and the rapid injection of 5-FU have different anti-cancer effects. Thus, bolus 5-FU and l-leucovorin treatment might be useful for oral FU-resistant GC. MATERIALS AND METHODS: We retrospectively analyzed the medical records of all patients with S-1 or capecitabine-resistant, unresectable, or recurrent GC treated with bolus 5-FU and l-leucovorin between January 2010 and December 2015 at Hokkaido University Hospital...
September 2016: Journal of Gastric Cancer
https://www.readbyqxmd.com/read/27743705/emerging-role-of-mesenchymal-stem-cells-during-tuberculosis-the-fifth-element-in-cell-mediated-immunity
#19
Arshad Khan, Robert L Hunter, Chinnaswamy Jagannath
Mesenchymal stem cells (MSCs) are non-hematopoietic cells that occur in almost all human tissues and can be cultured and expanded to large numbers in vitro. They secrete growth factors, cytokines, and chemokines and express Toll-like receptors on their surface, although multiple cell biological mechanisms remain unclear. MSCs are multi-potent and can differentiate into many cell types including adipocytes, neuronal cells and osteoclasts. Despite gaps in cell biology, because of their immunomodulatory and regenerative capacity, several hundred clinical trials have used MSCs for therapy of cancer, autoimmune diseases and control of inflammation during organ transplantation...
September 28, 2016: Tuberculosis
https://www.readbyqxmd.com/read/27729016/oral-fosfomycin-for-treatment-of-urinary-tract-infection-a-retrospective-cohort-study
#20
Philippa C Matthews, Lucinda K Barrett, Stephanie Warren, Nicole Stoesser, Mel Snelling, Matthew Scarborough, Nicola Jones
BACKGROUND: Fosfomycin is increasingly called upon for the treatment of multi drug-resistant (MDR) organisms causing urinary tract infection (UTI). We reviewed oral fosfomycin use for UTI treatment in a large UK hospital. The primary goal was to audit our clinical practice against current national guidelines. Secondary aims were to identify factors associated with treatment failure, and to investigate the potential for using fosfomycin in patients with co-morbidities. METHODS: We retrospectively studied 75 adult patients with UTI who received 151 episodes of treatment with fosfomycin from March 2013 to June 2015...
October 11, 2016: BMC Infectious Diseases
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