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Infectious diseases

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411 papers 100 to 500 followers
By Elvis Amao Internal Medicine , Cardiology and infectious diseases
https://www.readbyqxmd.com/read/29907803/effect-of-temperature-on-burkholderia-pseudomallei-growth-proteomic-changes-motility-and-resistance-to-stress-environments
#1
Suporn Paksanont, Kitisak Sintiprungrat, Thatcha Yimthin, Pornpan Pumirat, Sharon J Peacock, Narisara Chantratita
Burkholderia pseudomallei is a flagellated, gram-negative environmental bacterium that causes melioidosis, a severe infectious disease of humans and animals in tropical areas. We hypothesised that B. pseudomallei may undergo phenotypic adaptation in response to an increase in growth temperature. We analysed the growth curves of B. pseudomallei strain 153 cultured in Luria-Bertani broth at five different temperatures (25 °C-42 °C) and compared the proteomes of bacteria cultured at 37 °C and 42 °C...
June 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29908707/autoimmunity-and-b-cell-dyscrasia-in-acute-and-chronic-q-fever-a-review-of-the-literature
#2
REVIEW
Anne F M Jansen, Ruud P H Raijmakers, Stephan P Keijmel, Renate G van der Molen, Gerald M Vervoort, Jos W M van der Meer, Marcel van Deuren, Chantal P Bleeker-Rovers
Q fever infection can lead to chronic Q fever, a potentially lethal disease occurring in 1-5% of patients infected with Coxiella burnetii, characterized by the persistence of this intracellular bacterium. It usually presents as endocarditis, infected vascular aneurysms, or infected vascular prostheses. This systematic review of the literature discusses the various autoimmune syndromes and B-cell dyscrasias in acute and chronic Q fever patients, that may interfere with or impede recognition and diagnosis of Q fever...
June 13, 2018: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/29909041/influenza-virus
#3
Edward C Hutchinson
This infographic briefly summarises the natural history, replication cycle, and pathogenesis of influenza viruses, the cause of seasonal influenza and of influenza pandemics. Influenza viruses infect many vertebrates, with Influenza A, B and C viruses (IAV, IBV, and ICV) infecting humans. High mutation rates allow the evasion of immunity. IAV from different host species can 'reassort' their segmented genomes, producing pandemic strains that are antigenically novel but otherwise well adapted to humans. The 'Great Influenza' pandemic of 1918 remains the worst outbreak of infectious disease in history...
June 13, 2018: Trends in Microbiology
https://www.readbyqxmd.com/read/29704160/there-is-more-to-septic-shock-than-arterial-hypotension-and-elevated-lactate-levels-another-appeal-to-rethink-current-resuscitation-strategies
#4
REVIEW
Martin W Dünser, Arnaldo Dubin
No abstract text is available yet for this article.
April 27, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29767636/the-surviving-sepsis-campaign-bundle-2018-update
#5
Mitchell M Levy, Laura E Evans, Andrew Rhodes
No abstract text is available yet for this article.
June 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29781385/procalcitonin-guided-use-of-antibiotics-for-lower-respiratory-tract-infection
#6
David T Huang, Donald M Yealy, Michael R Filbin, Aaron M Brown, Chung-Chou H Chang, Yohei Doi, Michael W Donnino, Jonathan Fine, Michael J Fine, Michelle A Fischer, John M Holst, Peter C Hou, John A Kellum, Feras Khan, Michael C Kurz, Shahram Lotfipour, Frank LoVecchio, Octavia M Peck-Palmer, Francis Pike, Heather Prunty, Robert L Sherwin, Lauren Southerland, Thomas Terndrup, Lisa A Weissfeld, Jonathan Yabes, Derek C Angus
Background The effect of procalcitonin-guided use of antibiotics on treatment for suspected lower respiratory tract infection is unclear. Methods In 14 U.S. hospitals with high adherence to quality measures for the treatment of pneumonia, we provided guidance for clinicians about national clinical practice recommendations for the treatment of lower respiratory tract infections and the interpretation of procalcitonin assays. We then randomly assigned patients who presented to the emergency department with a suspected lower respiratory tract infection and for whom the treating physician was uncertain whether antibiotic therapy was indicated to one of two groups: the procalcitonin group, in which the treating clinicians were provided with real-time initial (and serial, if the patient was hospitalized) procalcitonin assay results and an antibiotic use guideline with graded recommendations based on four tiers of procalcitonin levels, or the usual-care group...
May 20, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29675919/therapy-and-outcome-of-staphylococcus-aureus-infections-of-intracorporeal-ventricular-assist-devices
#7
Miquel B Ekkelenkamp, Mats T Vervoorn, Jumamurat R Bayjanov, Ad C Fluit, Barry J Benaissa-Trouw, Faiz Z Ramjankhan
Infection of the driveline or pump pocket is a common complication in patients with ventricular assist devices (VADs) and Staphylococcus aureus is the main pathogen causing such infections. Limited evidence is currently available to guide the choice of antibiotic therapy and the duration of treatment in these patients. Patients at the University Medical Center Utrecht who developed a VAD-related S. aureus infection between 2007 and 2016 were retrospectively assessed. Blood culture isolates were typed by whole genome sequencing to differentiate between relapses and reinfections, and to determine whether antibiotic therapy had led to acquisition of resistance mutations...
April 19, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29539274/antifungal-combinations-for-treatment-of-cryptococcal-meningitis-in-africa
#8
RANDOMIZED CONTROLLED TRIAL
Síle F Molloy, Cecilia Kanyama, Robert S Heyderman, Angela Loyse, Charles Kouanfack, Duncan Chanda, Sayoki Mfinanga, Elvis Temfack, Shabir Lakhi, Sokoine Lesikari, Adrienne K Chan, Neil Stone, Newton Kalata, Natasha Karunaharan, Kate Gaskell, Mary Peirse, Jayne Ellis, Chimwemwe Chawinga, Sandrine Lontsi, Jean-Gilbert Ndong, Philip Bright, Duncan Lupiya, Tao Chen, John Bradley, Jack Adams, Charles van der Horst, Joep J van Oosterhout, Victor Sini, Yacouba N Mapoure, Peter Mwaba, Tihana Bicanic, David G Lalloo, Duolao Wang, Mina C Hosseinipour, Olivier Lortholary, Shabbar Jaffar, Thomas S Harrison
BACKGROUND: Cryptococcal meningitis accounts for more than 100,000 human immunodeficiency virus (HIV)-related deaths per year. We tested two treatment strategies that could be more sustainable in Africa than the standard of 2 weeks of amphotericin B plus flucytosine and more effective than the widely used fluconazole monotherapy. METHODS: We randomly assigned HIV-infected adults with cryptococcal meningitis to receive an oral regimen (fluconazole [1200 mg per day] plus flucytosine [100 mg per kilogram of body weight per day] for 2 weeks), 1 week of amphotericin B (1 mg per kilogram per day), or 2 weeks of amphotericin B (1 mg per kilogram per day)...
March 15, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29618394/comparison-of-predictors-and-mortality-between-bloodstream-infections-caused-by-esbl-producing-escherichia-coli-and-esbl-producing-klebsiella-pneumoniae
#9
Oded Scheuerman, Vered Schechner, Yehuda Carmeli, Belen Gutiérrez-Gutiérrez, Esther Calbo, Benito Almirante, Pier-Luigy Viale, Antonio Oliver, Patricia Ruiz-Garbajosa, Oriol Gasch, Monica Gozalo, Johann Pitout, Murat Akova, Carmen Peña, Jose Molina, Alicia Hernández-Torres, Mario Venditti, Nuria Prim, Julia Origüen, German Bou, Evelina Tacconelli, Maria Tumbarello, Axel Hamprecht, Ilias Karaiskos, Cristina de la Calle, Federico Pérez, Mitchell J Schwaber, Joaquin Bermejo, Warren Lowman, Po-Ren Hsueh, Carolina Navarro-San Francisco, Robert A Bonomo, David L Paterson, Alvaro Pascual, Jesus Rodríguez-Baño
OBJECTIVETo compare the epidemiology, clinical characteristics, and mortality of patients with bloodstream infections (BSI) caused by extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (ESBL-EC) versus ESBL-producing Klebsiella pneumoniae (ESBL-KP) and to examine the differences in clinical characteristics and outcome between BSIs caused by isolates with CTX-M versus other ESBL genotypesMETHODSAs part of the INCREMENT project, 33 tertiary hospitals in 12 countries retrospectively collected data on adult patients diagnosed with ESBL-EC BSI or ESBL-KP BSI between 2004 and 2013...
June 2018: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29511694/-aerococcus-urinae-mitral-valve-endocarditis-related-stroke-a-case-report-and-literature-review
#10
Darius Adomavicius, Mark Bock, Christian-Friedrich Vahl, Ekkehard Siegel
Background. Aerococcus urinae is a rare causative pathogen of infective endocarditis that results in a high risk of embolic events. The mortality rate for A urinae endocarditis is high. Old age and underlying urologic conditions are the best-known risk factors for infection. Case Description. We report the clinical course of the disease in a 49-year-old man who presented symptoms of a urinary tract infection. A few days later, transthoracic echocardiography showed a conspicuous mitral valve with myxomatous alterations...
January 2018: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29347874/adjunctive-glucocorticoid-therapy-in-patients-with-septic-shock
#11
RANDOMIZED CONTROLLED TRIAL
Balasubramanian Venkatesh, Simon Finfer, Jeremy Cohen, Dorrilyn Rajbhandari, Yaseen Arabi, Rinaldo Bellomo, Laurent Billot, Maryam Correa, Parisa Glass, Meg Harward, Christopher Joyce, Qiang Li, Colin McArthur, Anders Perner, Andrew Rhodes, Kelly Thompson, Steve Webb, John Myburgh
BACKGROUND: Whether hydrocortisone reduces mortality among patients with septic shock is unclear. METHODS: We randomly assigned patients with septic shock who were undergoing mechanical ventilation to receive hydrocortisone (at a dose of 200 mg per day) or placebo for 7 days or until death or discharge from the intensive care unit (ICU), whichever came first. The primary outcome was death from any cause at 90 days. RESULTS: From March 2013 through April 2017, a total of 3800 patients underwent randomization...
March 1, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29196066/cough-due-to-tb-and-other-chronic-infections-chest-guideline-and-expert-panel-report
#12
Stephen K Field, Patricio Escalante, Dina A Fisher, Belinda Ireland, Richard S Irwin
BACKGROUND: Cough is common in pulmonary TB and other chronic respiratory infections. Identifying features that predict whether pulmonary TB is the cause would help target appropriate individuals for rapid and cost-effective screening, potentially limiting disease progression and preventing transmission to others. METHODS: A systematic literature search for individual studies to answer eight key questions (KQs) was conducted according to established Chest Organization methods by using the following databases: MEDLINE via PubMed, Embase, Scopus, and the Cochrane Database of Systematic Reviews from January 1, 1984, to April 2014...
February 2018: Chest
https://www.readbyqxmd.com/read/29253553/the-risk-of-tb-in-patients-with-type-2-diabetes-initiating-metformin-vs-sulfonylurea-treatment
#13
Sheng-Wei Pan, Yung-Feng Yen, Yu Ru Kou, Pei-Hung Chuang, Vincent Yi-Fong Su, Jia-Yih Feng, Yu-Jiun Chan, Wei-Juin Su
BACKGROUND: Metformin and the sulfonylureas are common initial antidiabetic agents; the former has demonstrated anti-TB action in in vitro and animal studies. The comparative effect of metformin vs the sulfonylureas on TB risk in patients with type 2 diabetes mellitus (T2DM) remains unclear. METHODS: In this retrospective cohort study, patients without chronic kidney disease who received a T2DM diagnosis during 2003 to 2013 were identified from the Taiwan National Health Insurance Research Database...
December 16, 2017: Chest
https://www.readbyqxmd.com/read/29289687/a-comparison-of-the-quick-sofa-and-systemic-inflammatory-response-syndrome-criteria-for-the-diagnosis-of-sepsis-and-prediction-of-mortality-a-systematic-review-and-meta-analysis
#14
Rodrigo Serafim, José Andrade Gomes, Jorge Salluh, Pedro Póvoa
BACKGROUND: Several studies were published to validate the quick Sepsis-related Organ Failure Assessment (qSOFA), namely in comparison with the systemic inflammatory response syndrome (SIRS) criteria. We performed a systematic review and meta-analysis with the aim of comparing the qSOFA and SIRS in patients outside the ICU. METHODS: We searched MEDLINE, CINAHL, and the Web of Science database from February 23, 2016 until June 30, 2017 to identify full-text English-language studies published after the Sepsis-3 publication comparing the qSOFA and SIRS and their sensitivity or specificity in diagnosing sepsis, as well as hospital and ICU length of stay and hospital mortality...
March 2018: Chest
https://www.readbyqxmd.com/read/29254862/ceftazidime-avibactam-versus-meropenem-in-nosocomial-pneumonia-including-ventilator-associated-pneumonia-reprove-a-randomised-double-blind-phase-3-non-inferiority-trial
#15
Antoni Torres, Nanshan Zhong, Jan Pachl, Jean-François Timsit, Marin Kollef, Zhangjing Chen, Jie Song, Dianna Taylor, Peter J Laud, Gregory G Stone, Joseph W Chow
BACKGROUND: Nosocomial pneumonia is commonly associated with antimicrobial-resistant Gram-negative pathogens. We aimed to assess the efficacy and safety of ceftazidime-avibactam in patients with nosocomial pneumonia, including ventilator-associated pneumonia, compared with meropenem in a multinational, phase 3, double-blind, non-inferiority trial (REPROVE). METHODS: Adults with nosocomial pneumonia (including ventilator-associated pneumonia), enrolled at 136 centres in 23 countries, were randomly assigned (1:1) to 2000 mg ceftazidime and 500 mg avibactam (by 2 h intravenous infusion every 8 h) or 1000 mg meropenem (by 30-min intravenous infusion every 8 h) for 7-14 days; regimens were adjusted for renal function...
March 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29194372/what-is-our-current-understanding-of-prp-sc-associated-neurotoxicity-and-its-molecular-underpinnings
#16
REVIEW
Daniel Hughes, Mark Halliday
The prion diseases are a collection of fatal, transmissible neurodegenerative diseases that cause rapid onset dementia and ultimately death. Uniquely, the infectious agent is a misfolded form of the endogenous cellular prion protein, termed PrPSc . Despite the identity of the molecular agent remaining the same, PrPSc can cause a range of diseases with hereditary, spontaneous or iatrogenic aetiologies. However, the link between PrPSc and toxicity is complex, with subclinical cases of prion disease discovered, and prion neurodegeneration without obvious PrPSc deposition...
December 1, 2017: Pathogens
https://www.readbyqxmd.com/read/29194529/2017-infectious-diseases-society-of-america-clinical-practice-guidelines-for-the-diagnosis-and-management-of-infectious-diarrhea
#17
Andi L Shane, Rajal K Mody, John A Crump, Phillip I Tarr, Theodore S Steiner, Karen Kotloff, Joanne M Langley, Christine Wanke, Cirle Alcantara Warren, Allen C Cheng, Joseph Cantey, Larry K Pickering
These guidelines are intended for use by healthcare professionals who care for children and adults with suspected or confirmed infectious diarrhea. They are not intended to replace physician judgement regarding specific patients or clinical or public health situations. This document does not provide detailed recommendations on infection prevention and control aspects related to infectious diarrhea.
November 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29149932/sepsis-definitions-a-work-in-progress
#18
REVIEW
John C Marshall
The word, sepsis, dates back more than 2 millennia but has, over the past 2 centuries, come to be applied first to the clinical state evoked by invasive infection and, more recently, to describe the syndrome resulting from the host response to infection. Further refinements embodied in the recently published Sepsis-3 definition underline the concept of a dysregulated immune response resulting in potentially modifiable life-threatening organ dysfunction. This review summarizes the evolution and limitations of efforts to characterize a common and complex disorder...
January 2018: Critical Care Clinics
https://www.readbyqxmd.com/read/29149944/management-of-sepsis-induced-immunosuppression
#19
REVIEW
Fabienne Venet, Thomas Rimmelé, Guillaume Monneret
It is now well established that profound immunosuppression develops within a few days after sepsis onset in patients. This should be considered additional organ failure because it is associated with increased rate of nosocomial infections, mortality, and long-term complications, thus constituting the rationale for immunomodulation in patients. Nevertheless, the demonstration of the efficacy of such therapeutic strategy in improving deleterious outcomes in sepsis remains to be made. Results from clinical trials based on interleukin 7 and granulocyte macrophage colony-stimulating factor immunoadjuvant therapies in septic shock patients are expected for 2018...
January 2018: Critical Care Clinics
https://www.readbyqxmd.com/read/29149942/mechanisms-of-organ-dysfunction-in-sepsis
#20
REVIEW
Rachel Pool, Hernando Gomez, John A Kellum
Sepsis-associated organ dysfunction involves multiple responses to inflammation, including endothelial and microvascular dysfunction, immune and autonomic dysregulation, and cellular metabolic reprogramming. The effect of targeting these mechanistic pathways on short- and long-term outcomes depends highly on the timing of therapeutic intervention. Furthermore, there is a need to understand the adaptive or maladaptive character of these mechanisms, to discover phase-specific biomarkers to guide therapy, and to conceptualize these mechanisms in terms of resistance and tolerance...
January 2018: Critical Care Clinics
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