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https://www.readbyqxmd.com/read/28811241/utility-of-prior-cultures-in-predicting-antibiotic-resistance-of-bloodstream-infections-due-to-gram-negative-pathogens-a-multicenter-observational-cohort-study
#1
Derek R MacFadden, Bryan Coburn, Nirav Shah, Ari Robicsek, Rachel Savage, Marion Elligsen, Nick Daneman
OBJECTIVES: Appropriate empiric antibiotic therapy in patients with bloodstream infections due to Gram-negative pathogens can improve outcomes. We evaluated the utility of prior microbiologic results for guiding empiric treatment in Gram-negative bloodstream infections. METHODS: We conducted a multi-center observational cohort study, in two large health systems in Canada and the United States, including 1,832 hospitalized patients with Gram-negative bloodstream infection (community, hospital, and ICU acquired) from April 2010 to March 2015...
August 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28810606/aspergillus-niger-bloodstream-infection-in-gastric-cancer-after-common-hepatic-artery-embolization-a-case-report
#2
Li Lin, Chuan-Hua Zhao, Xiu-Yun Yin, Yu-Ling Chen, Hong-Yan Zhai, Chun-Wei Xu, Yan Wang, Fei-Jiao Ge, Jian-Ming Xu
The present case study reported on a 62-year-old male patient with gastric cancer-associated Aspergillus (A.) niger bloodstream infection. The patient presented with massive hemorrhage in the gastrointestinal tract 3 months after total gastrectomy for gastric cancer. Conservative treatment consisting of blood transfusion to supplement blood volume loss was ineffective. Digital subtraction angiography indicated gastroduodenal artery bleeding. The first attempt of performing arterial embolization using gelatin sponges failed, while the second attempt of performing common hepatic artery embolization using gelatin sponges and micro-coil springs stopped the bleeding...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809155/microbe-profile-candida-albicans-a-shape-changing-opportunistic-pathogenic-fungus-of-humans
#3
Neil A R Gow, Bhawna Yadav
(a) Morphotypes of Candida albicans (blue sector, vegetative forms; pink sector, forms related to mating or changes in ploidy). Cell types shown include: budding yeast cells; elongated conjoined yeasts forming pseudohyphae; parallel-sided hyphae; chlamydospores formed from suspensor cells; enlarged goliath cells formed under zinc deprivation (unpublished study, image from Duncan Wilson); intestinal gut form cells (image from Suzanne Noble); mating competence defined by white-grey-opaque cell transitions (images from Guanghua Huang); elongated chemotactic shmoo-mating projections leading to tetraploid zygote formation (images from David Soll and Karla Daniels); trimera formed by unequal chromosome segregation under antifungal exposure (image from Judith Berman)...
August 15, 2017: Microbiology
https://www.readbyqxmd.com/read/28807426/clinical-usefulness-of-catheter-drawn-blood-samples-and-catheter-tip-cultures-for-the-diagnosis-of-catheter-related-bloodstream-infections-in-neonatology-a-systematic-review
#4
REVIEW
Janita Ferreira, Paulo Augusto Moreira Camargos, Wanessa Trindade Clemente, Roberta Maia de Castro Romanelli
OBJECTIVES: Neonatal sepsis is the most frequent health care-associated infection in neonatal units. This study aimed to analyze articles on the clinical usefulness of catheter-drawn blood samples and catheter tip cultures for the diagnosis of intravascular catheter-related bloodstream infection (CRBSI) in neonates. METHODS: A systematic search was performed for studies published from 1987-2017, without language restriction. Observational studies carried out in neonates with CRBSI diagnosed using catheter-drawn blood samples or catheter tip cultures were included...
August 11, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28807425/clinical-outcome-of-dual-colistin-and-carbapenem-resistant-klebsiella-pneumoniae-bloodstream-infections-a-single-center-retrospective-study-of-75-cases-in-india
#5
Amarjeet Kaur, Sumanth Gandra, Priyanka Gupta, Yatin Mehta, Ramanan Laxminarayan, Sharmila Sengupta
In this study, we retrospectively evaluated clinical outcomes of 75 patients with dual colistin- and carbapenem-resistant Klebsiella pneumoniae bloodstream infections over a 5-year period in a single tertiary care hospital in India. We observed a high in-hospital mortality rate of 69.3%. Our findings indicate the urgent need for new antibiotics to treat these infections.
August 11, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28807291/toxocara-canis-analysis-of-the-kinetics-of-antigen-release-and-antibody-production-in-an-in-vivo-model-for-the-detection-of-past-or-present-infection
#6
Aarón Rodríguez-Caballero, Mario Noé Martínez-Gordillo, Silvia Caballero-Salazar, Yadira Rufino-González, Martha Ponce-Macotela
Worldwide, Toxocara canis is an important zoonotic nematode of public health concern. This soil-transmitted helminth causes visceral larva and ocular larva migrans in paratenic hosts. The detection of T. canis larva migrans is complicated because current immunological tests detect only IgG antibodies, which can cross-react with antigens from other parasites and cannot distinguish between the past and present infection. Analysis of antigen release and antibody production could help improve the detection of larva migrans...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28807074/a-model-to-predict-central-line-associated-bloodstream-infection-among-patients-with-peripherally-inserted-central-catheters-the-mpc-score
#7
Erica Herc, Payal Patel, Laraine L Washer, Anna Conlon, Scott A Flanders, Vineet Chopra
BACKGROUND Peripherally inserted central catheters (PICCs) are associated with central-line-associated bloodstream infections (CLABSIs). However, no tools to predict risk of PICC-CLABSI have been developed. OBJECTIVE To operationalize or prioritize CLABSI risk factors when making decisions regarding the use of PICCs using a risk model to estimate an individual's risk of PICC-CLABSI prior to device placement. METHODS Using data from the Michigan Hospital Medicine Safety consortium, patients that experienced PICC-CLABSI between January 2013 and October 2016 were identified...
August 15, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28805355/sensing-mg-2-contributes-to-the-resistance-of-pseudomonas-aeruginosa-to-complement-mediated-opsonophagocytosis
#8
Mohammad Qadi, Sofía Izquierdo-Rabassa, Margalida Mateu Borrás, Antonio Doménech-Sánchez, Carlos Juan, Joanna B Goldberg, Robert E W Hancock, Sebastián Albertí
Pseudomonas aeruginosa adaptation to survive in the host hinges on its ability to probe the environment and respond appropriately. Rapid adaptation is often mediated by two-component regulatory systems, such as the PhoP/PhoQ system that responds to Mg(2+) ion concentration. However, there is limited information about the role of PhoQ in P. aeruginosa bloodstream infections. We used a murine model of systemic infection to test the virulence of a PhoQ-deficient mutant. Mutation of PhoQ impaired the virulence and the ability to cause bacteremia of P...
August 14, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28804865/value-of-the-pitt-bacteraemia-score-to-predict-short-term-mortality-in-staphylococcus-aureus-bloodstream-infection-a-validation-study
#9
Jan A Roth, Sarah Tschudin-Sutter, Marc Dangel, Reno Frei, Manuel Battegay, Andreas F Widmer
BACKGROUND AND AIMS: The widely used Pitt Bacteraemia Score (PBS) has repeatedly been described as a risk factor for short-term mortality in Staphylococcus aureus bloodstream infection (BSI), but little is known about its overall predictive performance. We therefore aimed to externally validate the PBS in S. aureus BSIs. METHODS: We performed a retrospective validation study at the University Hospital Basel. Adult patients with a first episode of methicillin-susceptible S...
August 14, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28803866/pericarditis-caused-by-campylobacter-fetus-subspecies-fetus-associated-with-ingestion-of-raw-beef-liver
#10
Yoshihiko Kiyasu, Daiki Akiyama, Yoko Kurihara, Hiroshi Koganemaru, Shigemi Hitomi
Campylobacter fetus is an organism residing primarily in the gastrointestinal tracts of cattle and sheep and transmitting to humans through ingestion of contaminated food products or surface water. The organism has caused various extraintestinal infections but, to date, purulent pericarditis due to the organism has rarely been described. We report a case of purulent pericarditis due to C. fetus subsp. fetus, occurring in a patient having several predisposing conditions, including receiving hemodialysis therapy, recent surgery for cecal cancer, and administration of esomeprazole...
August 10, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28802758/impact-of-rapid-identification-of-staphylococcus-aureus-bloodstream-infection-without-antimicrobial-stewardship-intervention-on-antibiotic-optimization-and-clinical-outcomes
#11
R Brigg Turner, Karineh Lalikian, Madeline Fry, Jacqueline Schwartz, Dominic Chan, Regina Won
Few studies have evaluated the clinical impact of polymerase chain reaction (PCR) for Staphylococcus aureus bloodstream infections in resource-limited settings that lack direct antimicrobial stewardship intervention. This retrospective cohort study compared patients with standard microbiological identification (n=343) to those with additional identification by (PCR) (n=130). Time to initiation of optimal therapy was similar between groups but substantially shorter in the PCR group for those infected with methicillin susceptible S...
July 8, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28801698/association-between-dementia-and-reduced-walking-ability-and-30-day-mortality-in-patients-with-extended-spectrum-beta-lactamase-producing-escherichia-coli-bacteremia
#12
G Chapelet, A S Boureau, A Dylis, G Herbreteau, S Corvec, E Batard, G Berrut, L de Decker
Previous studies have shown controversial results of factors associated with short-term mortality in patients with extended-spectrum beta-lactamase (ESBL)-producing E. coli bacteremia and no research has investigated the impact of the geriatric assessment criteria on short-term mortality. Our objective was to determine whether dementia and walking ability are associated with 30-day mortality in patients with ESBL-producing E. coli bacteremia. All blood bottle cultures, analyzed from January 2008 to April 2015, in the Bacteriology Department of a 2,600-bed, university-affiliated center, Nantes, France, were retrospectively extracted...
August 12, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28797573/digestive-decontamination-in-burn-patients-a-systematic-review-of-randomized-clinical-trials-and-observational-studies
#13
REVIEW
Mercedes Rubio-Regidor, Ana Martín-Pellicer, Luciano Silvestri, Hendrik K F van Saene, José A Lorente, Miguel A de la Cal
OBJECTIVE: The objective of this systematic review is to assess the effect of selective digestive decontamination (SDD) or non-absorbable enteral antibiotics (EA) on mortality, the incidence of infection and its adverse effects in burn patients. MATERIAL AND METHODS: Systematic review of randomized clinical trials (RCT) or observational studies enrolling burn patients, and comparing SDD or EA prophylaxis with placebo or no treatment. The search includes Pubmed/Medline, EMBASE, WOS, Cochrane Library (1970-2015)...
August 7, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28797324/novel-mcr-3-variant-encoding-mobile-colistin-resistance-in-an-st131-escherichia-coli-isolate-from-bloodstream-infection-denmark-2014
#14
Louise Roer, Frank Hansen, Marc Stegger, Ute Wolff Sönksen, Henrik Hasman, Anette M Hammerum
A novel variant of the plasmid-borne colistin resistance gene mcr-3 was detected on an IncHI2 plasmid in an ST131 CTX-M-55-producing Escherichia coli isolate from a Danish patient with bloodstream infection in 2014. The discovery of novel plasmid-borne genes conferring resistance to colistin is of special interest since colistin has reemerged as an important drug in the treatment of infections with multidrug-resistant Gram-negative bacteria.
August 3, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28796061/analysis-of-early-onset-bloodstream-infection-due-to-escherichia-coli-infection-in-premature-babies
#15
I-Lun Chen, Hsin-Chun Huang, Chih-Te Wu, Mei-Chen Ou-Yang, Mei-Yung Chung, Chih-Cheng Chen, Jau-Ling Suen, Chih-Hsing Hung
In early-onset bacteremia among preterm neonates, Escherichia coli (E. coli) is the main pathogen and can cause a high mortality rate. Thus, the predictive factors of mortality and extended-spectrum β-lactamase (ESBL)-producing E. coli in preterm babies with E. coli early-onset bacteremia were reported.We retrospectively reviewed preterm neonates who had E. coli bacteremia occurring within 3 days after birth between 2004 and 2015. Maternal and perinatal information were collected from their medical records and analyzed by comparing the survival and nonsurvival groups, and also the ESBL-producing and non-ESBL-producing E...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28794000/the-making-dialysis-safer-for-patients-coalition-a-new-partnership-to-prevent-hemodialysis-related-infections
#16
Priti R Patel, Kristin Brinsley-Rainisch
The Making Dialysis Safer for Patients Coalition is a partnership of organizations and individual stakeholders that share the common goal to prevent bloodstream infections among patients receiving hemodialysis. Led by the Centers for Disease Control and Prevention (CDC), in collaboration with the CDC Foundation, this public-private partnership strives to improve adherence to evidence-based recommendations, share information and experiences, and engage patients in infection prevention efforts.
August 9, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28793993/taurolidine-citrate-heparin-lock-reduces-catheter-related-bloodstream-infections-in-intestinal-failure-patients-dependent-on-home-parenteral-support-a-randomized-placebo-controlled-trial
#17
Siri Tribler, Christopher F Brandt, Anne H Petersen, Jørgen H Petersen, Kristian A Fuglsang, Michael Staun, Per Broebech, Claus E Moser, Palle B Jeppesen
Background: In patients with intestinal failure who are receiving home parenteral support (HPS), catheter-related bloodstream infections (CRBSIs) inflict health impairment and high costs.Objective: This study investigates the efficacy and safety of the antimicrobial catheter lock solution, taurolidine-citrate-heparin, compared with heparin 100 IE/mL on CRBSI occurrence.Design: Forty-one high-risk patients receiving HPS followed in a tertiary HPS unit were randomly assigned in a double-blinded, placebo-controlled trial...
August 9, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28782704/geographical-variation-in-therapy-for-bloodstream-infections-due-to-multidrug-resistant-enterobacteriaceae-a-post-hoc-analysis-of-the-increment-study
#18
Patrick N A Harris, M Diletta Pezzani, Belén Gutiérrez-Gutiérrez, Pierluigi Viale, Po-Ren Hsueh, Patricia Ruiz-Garbajosa, Mario Venditti, Mario Tumbarello, Carolina Navarro-Francisco, Esther Calbo, Murat Akova, Helen Giamarellou, Antonio Oliver, Benito Almirante, Oriol Gasch, Luis Martínez-Martínez, Mitchell J Schwaber, George Daikos, Johann Pitout, Carmen Peña, Alicia Hernández-Torres, Yohei Doi, Federico Pérez, Felipe Francisco Tuon, Evelina Tacconelli, Yehuda Carmeli, Robert A Bonomo, Álvaro Pascual, David L Paterson, Jesús Rodríguez-Baño
We aimed to describe regional differences in therapy for bloodstream infection (BSI) caused by extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) or carbapenemase-producing Enterobacteriaceae (CPE). 1,482 patients in 12 countries were included from an observational study of BSI caused by ESBL-E or CPE. Multivariate logistic regression was used to calculate adjusted odds ratios (aORs) for the influence of country of recruitment on empirical use of β-lactam/β-lactamase inhibitors (BLBLI) or carbapenems, targeted use of BLBLI for ESBL-E and use of targeted combination therapy for CPE...
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782651/emergence-of-dalbavancin-non-susceptible-vancomycin-intermediate-staphylococcus-aureus-visa-after-treatment-of-mrsa-central-line-associated-bloodstream-infection-with-a-dalbavancin-and-vancomycin-containing-regimen
#19
Brian J Werth, Rupali Jain, Andrew Hahn, Lisa Cummings, Tatiana Weaver, Adam Waalkes, Dhruba Sengupta, Stephen J Salipante, Robert M Rakita, Susan M Butler-Wu
OBJECTIVES: Dalbavancin is a long-acting lipoglycopeptide with activity against Gram-positives, including methicillin-resistant Staphylococcus aureus(MRSA). The potential for lipoglycopeptides, with half-lives greater than one-week, to select for resistance is unknown. Here we explore a case of MRSA central line-associated blood stream infection in which dalbavancin and vancomycin non-susceptibility emerged in a urine isolate collected after the patient was treated with vancomycin and dalbavancin sequentially...
August 3, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28780484/expression-of-hepcidin-and-ferroportin-in-full-term-placenta-of-pregnant-cows
#20
Sante Roperto, Valeria Russo, Chiara Urraro, Anna Cutarelli, Antonella Perillo, Francesca De Falco, Franco Roperto
Hepcidin (HEP) and ferroportin (FPN) play a central role in systemic iron homeostasis. The HEP/FPN axis controls both extracellular iron concentration and total body iron levels. HEP is synthesized mainly by hepatocytes and controls the absorption of dietary iron and the distribution of iron to the various cell types; its synthesis is regulated by both iron and innate immunity. FPN is a membrane protein and the major exporter of iron from mammalian cells, including iron recycling macrophages, iron absorbing duodenal enterocytes, and iron storing hepatocytes...
July 27, 2017: Theriogenology
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