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Blood stream infections

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https://www.readbyqxmd.com/read/27902389/antimicrobial-susceptibility-to-azithromycin-among-salmonella-enterica-typhi-and-paratyphi-a-isolates-from-india
#1
Richa Misra, Kashi N Prasad
Decreased ciprofloxacin susceptibility (DCS) and multi-drug resistance (MDR) in typhoidal Salmonella isolates in areas of endemicity is a significant therapeutic problem. Guidelines for azithromycin disk diffusion and minimal inhibitory concentration (MIC) interpretive criteria for Salmonella enterica serovar Typhi were published recently by CLSI in 2015.We investigated the antimicrobial susceptibility pattern of azithromycin in 100 isolates of Salmonella Typhi (n=80), Paratyphi A (n=18) and B (n=2) recovered from blood stream infections from January 2013 to December 2015...
November 10, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27895171/impairment-of-ccr6-and-cxcr3-th-cell-migration-in-hiv-1-infection-is-rescued-by-modulating-actin-polymerization
#2
Valentina Cecchinato, Enos Bernasconi, Roberto F Speck, Michele Proietti, Ulrike Sauermann, Gianluca D'Agostino, Gabriela Danelon, Tanja Rezzonico Jost, Fabio Grassi, Lorenzo Raeli, Franziska Schöni-Affolter, Christiane Stahl-Hennig, Mariagrazia Uguccioni
CD4(+) T cell repopulation of the gut is rarely achieved in HIV-1-infected individuals who are receiving clinically effective antiretroviral therapy. Alterations in the integrity of the mucosal barrier have been indicated as a cause for chronic immune activation and disease progression. In this study, we present evidence that persistent immune activation causes impairment of lymphocytes to respond to chemotactic stimuli, thus preventing their trafficking from the blood stream to peripheral organs. CCR6(+) and CXCR3(+) Th cells accumulate in the blood of aviremic HIV-1-infected patients on long-term antiretroviral therapy, and their frequency in the circulation positively correlates to levels of soluble CD14 in plasma, a marker of chronic immune activation...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27885468/staphylococcus-lugdunensis-infections-filling-in-the-gaps-a-3-year-retrospective-review-from-a-comprehensive-cancer-center
#3
Lior Nesher, Jeffery Tarrand, Roy F Chemaly, Kenneth Vi Rolston
OBJECTIVE: Staphylococcus lugdunensis is considered to be more aggressive than other coagulase-negative staphylococci (CoNS). There are gaps in knowledge regarding the importance of isolating S. lugdunensis from different sources and in different patient subsets. Our objective was to describe the spectrum, clinical manifestations, and outcomes of infections caused by S. lugdunensis in patients with cancer. METHODS: A retrospective review of all cancer patients from whom S...
November 24, 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/27876233/role-of-platelets-in-neutrophil-extracellular-trap-net-production-and-tissue-injury
#4
REVIEW
Seok-Joo Kim, Craig N Jenne
In addition to their well-known role as the cellular mediator of thrombosis, numerous studies have identified key roles for platelets during various disease processes. Importantly, platelets play a critical role in the host immune response, directly interacting with, and eliminating pathogens, from the blood stream. In addition to pathogen clearance, platelets also contribute to leukocyte recruitment at sites of infection and inflammation, and modulate leukocyte activity. Platelet interaction with activated neutrophils is a potent inducer of neutrophil extracellular trap (NET)...
November 18, 2016: Seminars in Immunology
https://www.readbyqxmd.com/read/27872830/bacteremia-in-hemodialysis-patients
#5
REVIEW
Masashi Suzuki, Nobuhiko Satoh, Motonobu Nakamura, Shoko Horita, George Seki, Kyoji Moriya
Infection is a common complication and is the second leading cause of death in hemodialysis patients. The risk of bacteremia in hemodialysis patients is 26-fold higher than in the general population, and 1/2-3/4 of the causative organisms of bacteremia in hemodialysis patients are Gram-positive bacteria. The ratio of resistant bacteria in hemodialysis patients compared to the general population is unclear. Several reports have indicated that hemodialysis patients have a higher risk of methicillin-resistant Staphylococcus aureus infection...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27849508/rates-of-microbiologically-diagnosed-infection-and-pathogen-detection-in-hematopoietic-stem-cell-transplant-patients
#6
Lauren E Lee, Alice E Barsoumian, Alexander W Brown, Michael A Wiggins, John S Renshaw, Michael B Osswald, Clinton K Murray
Infections remain a significant cause of mortality in hematopoietic stem cell transplant patients. Evaluations of causes of infection are often unrevealing, and at some sites, increasing rates of antimicrobial resistance have been noticed. We performed a retrospective analysis of infection rates and microbiologic testing yield, or percent of tests ordered to diagnose an infection, in the first 100 days of 30 allogeneic and 56 autologous stem cell transplants performed at San Antonio Military Medical Center from July 2011 to April 2014...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27847371/sensitive-detection-of-francisella-tularensis-directly-from-whole-blood-using-the-genexpert-system
#7
Padmapriya P Banada, Srinidhi Deshpande, Soumitesh Chakravorty, Riccardo Russo, James Occi, Gabriel Meister, Kelly J Jones, Carl H Gelhaus, Michelle W Valderas, Martin Jones, Nancy Connell, David Alland
BACKGROUND: Francisella tularensis is a potential bioterrorism agent that is highly infectious at very low doses. Diagnosis of tularemia by blood culture and nucleic acid based diagnostic tests are insufficiently sensitive. Here, we demonstrate a highly sensitive, F. tularensis assay that incorporates sample processing and detection into a single cartridge suitable for point of care detection. METHODS: Assay limit of detection (LOD) and dynamic range were determined in a filter based cartridge run on the GeneXpert system...
November 9, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27846254/extended-spectrum-beta-%C3%AE-lactamases-and-antibiogram-in-enterobacteriaceae-from-clinical-and-drinking-water-sources-from-bahir-dar-city-ethiopia
#8
Bayeh Abera, Mulugeta Kibret, Wondemagegn Mulu
BACKGROUND: The spread of Extended-Spectrum beta (β)-Lactamases (ESBL)-producing Enterobacteriaceae has become a serious global problem. ESBL-producing Enterobacteriaceae vary based on differences in antibiotic use, nature of patients and hospital settings. This study was aimed at determining ESBL and antibiogram in Enterobacteriaceae isolates from clinical and drinking water sources in Bahir Dar City, Northwest Ethiopia. METHODS: Enterobacteriaceae species were isolated from clinical materials and tap water using standard culturing procedures from September 2013 to March 2015...
2016: PloS One
https://www.readbyqxmd.com/read/27843749/mortality-markers-in-nosocomial-klebsiella-pneumoniae-bloodstream-infection
#9
Bulent Durdu, Ismail Necati Hakyemez, Sibel Bolukcu, Gulay Okay, Bilge Gultepe, Turan Aslan
PURPOSE: Klebsiella pneumoniae is the most common endogen agent for nosocomial infections. In this study, mortality markers were investigated in patients with nosocomial K. pneumoniae blood stream infection (NKp BSI). METHODS: The characteristics of patients >16 years who had NKp BSI diagnosis by daily active surveillance between January 2012 and January 2016 were retrospectively evaluated. Patients who died until 28th day of the clinical follow up and those who survived until this time were statistically compared in terms of various risk factors...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27829951/clinical-impact-of-blood-culture-results-in-acutely-ill-hospitalized-adult-patients-with-cystic-fibrosis
#10
Robert J Vender, Robert L Vender
BACKGROUND: Blood cultures are obtained clinically to confirm site and source of acute infection as well as to guide effective antibiotic therapies. Patients with cystic fibrosis (CF) are at risk for blood stream infection (BSI) as identified from positive blood culture results. METHODS: A retrospective chart review was performed of 190 adult CF patients from January 1, 2001 through December 1, 2015. All positive blood culture results were identified as to clinical relevance and source of BSI...
December 2016: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27822085/danish-childhood-cancer-registry
#11
REVIEW
Henrik Schrøder, Catherine Rechnitzer, Peder Skov Wehner, Steen Rosthøj, Jens Kjølseth Møller, Birgitte Lausen, Gitte Petersen, Mette Nørgaard
AIM OF DATABASE: The overall aim is to monitor the quality of childhood cancer care in Denmark; to register late effects of treatment; to analyze complications of permanent central venous catheters (CVCs); to study blood stream infections in children with cancer; and to study acute toxicity of high-dose methotrexate infusions in children with leukemia. STUDY POPULATION: All children below 15 years of age at diagnosis living in Denmark diagnosed after January 1, 1985 according to the International Classification of Diseases 10, including diagnoses DC00-DD48...
2016: Clinical Epidemiology
https://www.readbyqxmd.com/read/27814776/lower-versus-higher-dose-of-enteral-caloric-intake-in-adult-critically-ill-patients-a-systematic-review-and-meta-analysis
#12
Hasan M Al-Dorzi, Abdullah Albarrak, Mazen Ferwana, Mohammad Hassan Murad, Yaseen M Arabi
BACKGROUND: There is conflicting evidence about the relationship between the dose of enteral caloric intake and survival in critically ill patients. The objective of this systematic review and meta-analysis is to compare the effect of lower versus higher dose of enteral caloric intake in adult critically ill patients on outcome. METHODS: We reviewed MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus from inception through November 2015...
November 4, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27803408/varicella-reinfection-with-unilateral-varicella-pneumonia
#13
Ryo Ariyasu, Kazuhiko Nakagawa, Naoya Ikegami, Chisato Konishi, Satoshi Nakao, Tomoko Funazo, Masato Taki, Kyohei Morita, Moon Hee Hwang, Chie Yoshimura, Toshiaki Wakayama, Yasuo Nishizaka
Varicella zoster virus (VZV) infection does not always provide lifelong immunity. A reinfection with VZV occurs more commonly than previously thought. Varicella infection spreads through the blood-stream, causing pneumonia. Varicella pneumonia results in bilateral pulmonary nodular infiltrations. We herein report a case of varicella reinfection with unilateral varicella pneumonia in which a reduced pulmonary blood flow due to radiation damage was considered to be the cause of unilateral pneumonia. In patients with an asymmetric pulmonary blood flow, careful interpretation of unilateral infiltration is therefore considered to be important with making a differential diagnosis...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27803173/inhibition-of-phagocytosis-and-pyroptosis-of-macrophages-promotes-bartonella-invasion-into-the-bloodstream-through-lymphatic-circulation
#14
Jiehua Hong, Yan Li, Xiuguo Hua, Yajie Bai, Chunyan Wang, Caixia Zhu, Yuming Du, Zhibiao Yang, Congli Yuan
The hallmark of Bartonella infection is long-lasting intra-erythrocytic parasitism. However, the process of Bartonella bacteremia is still enigmatic. Here, we used Bartonella tribocorum (Bt) to understand how Bartonella invasion into the bloodstream from dermal inoculation might occur. Bartonella was poorly phagocytized by peritoneal macrophages in vitro. Intracellular Bartonella survived and replicated in macrophages at early stage of infection. Intracellular Bartonella inhibited spontaneous cell death of macrophage...
October 31, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27798663/epidemiology-of-blood-stream-infection-due-to-candida-species-in-a-tertiary-care-hospital-in-japan-over-12-years-importance-of-peripheral-line-associated-candidemia
#15
Masahiro Ishikane, Kayoko Hayakawa, Satoshi Kutsuna, Nozomi Takeshita, Norio Ohmagari
BACKGROUND: Candidemia is an important cause of mortality in healthcare settings. Peripheral lines are a source of candidemia, yet few studies have reported on the clinico-epidemiological features of candidemia due to peripheral-line associated blood stream infection (PLABSI). METHODS: We conducted a single-centre retrospective cohort study of all patients with candidemia between 2002 and 2013. PLABSI was defined as the presence of at least one of the following: the presence of phlebitis or the resolution of clinical symptoms after peripheral-line withdrawal, with careful exclusion of an alternative explanation for bacteraemia...
2016: PloS One
https://www.readbyqxmd.com/read/27765533/a-novel-comprehensive-set-of-fungal-real-time-pcr-assays-fupcr-for-the-detection-of-fungi-in-immunocompromised-haematological-patients-a-pilot-study
#16
Sebastian Rahn, Anna Schuck, Mustafa Kondakci, Rainer Haas, Nicole Neuhausen, Klaus Pfeffer, Birgit Henrich
Fungal infections are recognized in an increasing number of patients with immunological deficits and are associated with high rates of mortality (Brown et al., 2012a). In this pilot-study, a rapid Real time PCR (fuPCR) was designed for the detection and differentiation of fungal pathogens in clinical specimens of haematological patients. The fuPCR, targeting the internal transcribed spacer region 2 (ITS2) of rDNA region, is comprised of seven multiplex reactions, which were shown to be specific and sensitive for a comprehensive spectrum of clinically relevant fungal species...
December 2016: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/27764257/hiv-1-integrates-widely-throughout-the-genome-of-the-human-blood-fluke-schistosoma-mansoni
#17
Sutas Suttiprapa, Gabriel Rinaldi, Isheng J Tsai, Victoria H Mann, Larisa Dubrovsky, Hong-Bin Yan, Nancy Holroyd, Thomas Huckvale, Caroline Durrant, Anna V Protasio, Tatiana Pushkarsky, Sergey Iordanskiy, Matthew Berriman, Michael I Bukrinsky, Paul J Brindley
Schistosomiasis is the most important helminthic disease of humanity in terms of morbidity and mortality. Facile manipulation of schistosomes using lentiviruses would enable advances in functional genomics in these and related neglected tropical diseases pathogens including tapeworms, and including their non-dividing cells. Such approaches have hitherto been unavailable. Blood stream forms of the human blood fluke, Schistosoma mansoni, the causative agent of the hepatointestinal schistosomiasis, were infected with the human HIV-1 isolate NL4-3 pseudotyped with vesicular stomatitis virus glycoprotein...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27730778/antibiotic-lock-therapy-in-the-era-of-gram-negative-resistance
#18
Rajeev Soman, Neha Gupta, Mitesh Suthar, Jatin Kothari, Alan Almeida, Anjali Shetty, Camilla Rodrigues
BACKGROUND: Central-line-associated blood-stream infection (CLABSI) is a highly consequential nosocomial infection. The most effective management includes the removal of the infected catheter. Retention of the catheter and antibiotic lock therapy (ALT) along with systemic antibiotics may be attempted only if there are unusual extenuating circumstances. CLABSIs due to Gram-negative bacteria (GNB) is more common in our setting and the organisms are often highly resistant. Hence, there is a need to explore the use of novel antimicrobials for catheter lock solutions along with antibiofilm agents...
February 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27723418/gene-expression-profile-of-endothelial-cells-during-perturbation-of-the-gut-vascular-barrier
#19
Ilaria Spadoni, Alessandro Pietrelli, Graziano Pesole, Maria Rescigno
It has been widely demonstrated that tolerance against gut microbiota is compartmentalized to mucosal sites where microbes mostly reside. How the commensal bacteria are excluded from the entrance into the blood stream via intestinal capillaries that are located beneath the gut epithelium was not clear. We recently described the existence of a new anatomical structure, the 'gut vascular barrier' (GVB), both in murine and human intestines that plays a fundamental role in avoiding indiscriminate trafficking of bacteria from the gut into the blood circulation...
October 10, 2016: Gut Microbes
https://www.readbyqxmd.com/read/27722101/toxoplasmosis-in-hiv-infection-an-overview
#20
Anuradha Basavaraju
Toxoplasma gondii is an obligate intracellular protozoan parasite presenting as a zoonotic infection distributed worldwide. In HIV-positive individuals, it causes severe opportunistic infections, which is of major public health concern as it results in physical and psychological disabilities. In healthy immunocompetent individuals, it causes asymptomatic chronic persistent infections, but in immunosuppressed patients, there is reactivation of the parasite if the CD4 counts fall below 200 cells/μl. The seroprevalence rates are variable in different geographic areas...
July 2016: Tropical Parasitology
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