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European Journal of Clinical Microbiology & Infectious Diseases

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https://www.readbyqxmd.com/read/28647859/high-touch-surfaces-microbial-neighbours-at-hand
#1
REVIEW
L Cobrado, A Silva-Dias, M M Azevedo, A G Rodrigues
Despite considerable efforts, healthcare-associated infections (HAIs) continue to be globally responsible for serious morbidity, increased costs and prolonged length of stay. Among potentially preventable sources of microbial pathogens causing HAIs, patient care items and environmental surfaces frequently touched play an important role in the chain of transmission. Microorganisms contaminating such high-touch surfaces include Gram-positive and Gram-negative bacteria, viruses, yeasts and parasites, with improved cleaning and disinfection effectively decreasing the rate of HAIs...
June 25, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28647858/counter-intuitive-plasma-vitamin-d-and-zinc-status-in-hiv-1-infected-adults-with-persistent-low-level-viraemia-after-treatment-initiation-a-pilot-case-control-study
#2
H Melliez, A Duhamel, O Robineau, L Bocket, I Kim, E Sauser, F Loiseleur, N Viget, A Pasquet, E Senneville, D Seguy
Determinants of persistent low-level viraemia [PLLV, a viral load (VL) of between 50 and 500 copies/mL] have not been elucidated. In a case-control study, we evaluated the influence of micronutrients on PLLV in a population of 454 HIV-1 adults having initiated antiretroviral therapy (ART) between January 2007 and December 2011. Plasma levels of retinol (vitamin A), 25-OH vitamin D2 + D3, vitamin E and zinc were measured at ART initiation in cases (PLLV after 6 months of ART) and in controls (VL <50 copies/mL after 6 months)...
June 24, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28643188/impact-of-appropriateness-of-empiric-therapy-on-outcomes-in-community-onset-bacteremia-by-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-and-klebisella-pneumoniae-definitively-treated-with-carbapenems
#3
E-J Joo, D A Park, N R Lee, S-Y Moon, J-K Choi, J-H Ko, K R Peck
Despite a significant increase of bloodstream infection caused by extended-spectrum-β-lactamase (ESBL)-producing Enterobacteriaceae in the community-setting, information regarding clinical outcomes of inappropriate empiric therapy (IAT) in patients with those infections is limited. A multicenter-retrospective cohort study was conducted in four hospitals. A total of 249 adults were identified to have community-onset bacteremia caused by ESBL-producing Escherichia coli and Klebsiella pneumoniae, and definitively treated with carbapenems...
June 23, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28639165/molecular-characterization-of-intestinal-carriage-of-carbapenem-resistant-enterobacteriaceae-among-inpatients-at-two-iranian-university-hospitals-first-report-of-co-production-of-bla-ndm-7-and-bla-oxa-48
#4
H Solgi, F Badmasti, Z Aminzadeh, C G Giske, M Pourahmad, F Vaziri, S A Havaei, F Shahcheraghi
Gastrointestinal colonization of carbapenem-resistant Enterobacteriaceae (CRE) could serve as a reservoir for the transmission of these pathogens in the clinical setting. The aim of this study was to investigate the intestinal carriage of CRE and to analyze risk factors for CRE carriage. Rectal swabs were collected from 95 patients at two Iranian university hospitals. CRE screening was performed using selective media (CHROMagar and MacConkey agar). Polymerase chain reaction (PCR) was used to detect carbapenemase-encoding genes...
June 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28639164/lipid-peroxidation-in-gram-negative-bacteremia-modulates-the-risk-for-septic-shock-and-infections-by-resistant-klebsiella-pneumoniae
#5
S Christodoulou, E Kyriazopoulou, M Chrysanthakopoulou, G Karlis, I Karampela, K Gkizeli, N Veliki, A Safarika, E J Giamarellos-Bourboulis, G Adamis
Controversies in outcomes with the parenteral administration of antioxidants as adjuvant therapies led to the measurement of malondialdehyde (MDA), a product of lipid peroxidation, in serum collected from 120 patients with primary Gram-negative bacteremia during the first 24 h from sepsis onset. MDA was measured by the thiobarbiturate assay, followed by high-performance liquid chromatography (HPLC) analysis. After receiver operator characteristic (ROC) curve analysis, patients were divided into those with high levels of MDA and low levels of MDA...
June 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28639163/agr-functionality-affects-clinical-outcomes-in-patients-with-persistent-methicillin-resistant-staphylococcus-aureus-bacteraemia
#6
C K Kang, Y K Kim, S-I Jung, W B Park, K-H Song, K-H Park, P G Choe, H-C Jang, S Lee, Y-S Kim, Y G Kwak, K T Kwon, S Kiem, C-J Kim, E S Kim, H B Kim
Methicillin-resistant Staphylococcus aureus bacteremia (MRSAB) often persists despite appropriate antibiotic therapy. It is unclear what microbiological factors contribute to poor clinical outcomes in persistent MRSAB (pMRSAB). We aimed to identify clinical and microbiological risk factors for in-hospital mortality in pMRSAB. We analysed MRSAB cases prospectively collected between 2009 and 2016 at 11 hospitals in Korea, defining cases of pMRSAB as MRSAB lasting ≥5 days despite administration of effective antibiotics...
June 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28639162/bacterial-genome-sequencing-in-clinical-microbiology-a-pathogen-oriented-review
#7
REVIEW
F Tagini, G Greub
In recent years, whole-genome sequencing (WGS) has been perceived as a technology with the potential to revolutionise clinical microbiology. Herein, we reviewed the literature on the use of WGS for the most commonly encountered pathogens in clinical microbiology laboratories: Escherichia coli and other Enterobacteriaceae, Staphylococcus aureus and coagulase-negative staphylococci, streptococci and enterococci, mycobacteria and Chlamydia trachomatis. For each pathogen group, we focused on five different aspects: the genome characteristics, the most common genomic approaches and the clinical uses of WGS for (i) typing and outbreak analysis, (ii) virulence investigation and (iii) in silico antimicrobial susceptibility testing...
June 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28631170/development-of-a-peptide-elisa-to-discriminate-vaccine-induced-immunity-from-natural-infection-of-hepatitis-a-virus-in-a-phase-iv-study
#8
C Ye, J Luo, X Wang, J Xi, Y Pan, J Chen, X Yang, G Li, Q Sun, J Yang
Hepatitis A virus (HAV) is a highly infectious agent that causes acute liver disease. The infection can trigger the production of antibodies against the structural and non-structural proteins of HAV. Nonetheless, vaccination with an HAV vaccine leads to the production of a primary antibody against the structural proteins. Because the non-structural proteins are only produced during active virus replication, there is no or very little antibody production against the non-structural proteins. However, the current commercial immunoassay cannot distinguish between antibodies produced during natural infection and those from vaccination against HAV...
June 19, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28631169/zika-virus-infection-in-vietnam-current-epidemic-strain-origin-spreading-risk-and-perspective
#9
REVIEW
Dinh-Toi Chu, Vo Truong Nhu Ngoc, Yang Tao
Zika virus infection and its associated microcephaly have being receiving global concern. This infection has spread widely since the first outbreak was recorded in Africa in 1952. Now, it has been reported in over 70 countries on five continents including Africa, North and South America, Asia, and Europe. Vietnam is one of the most recent countries which had cases of Zika virus infection at the end of 2016. This country has also reported the first case of a microcephaly-born baby which was probably linked to Zika virus infection...
June 19, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28624864/the-clinical-significance-of-pneumonia-in-patients-with-respiratory-specimens-harbouring-multidrug-resistant-pseudomonas-aeruginosa-a-5-year-retrospective-study-following-5667-patients-in-four-general-icus
#10
B Borgatta, S Gattarello, C A Mazo, A T Imbiscuso, M N Larrosa, M Lujàn, J Rello
Pseudomonas aeruginosa is the leading cause of pneumonia in intensive care units (ICUs), with multidrug-resistant (MDR) strains posing a serious threat. The aim of this study was to assess the clinical relevance of MDR Pseudomonas isolates in respiratory clinical specimens. A 5-year retrospective observational study in four medical-surgical ICUs from a referral hospital was carried out. Of 5667 adults admitted to the ICU, 69 had MDR-PA in respiratory samples: 31 were identified as having pneumonia (HAP/VAP): 21 ventilator-associated pneumonia (VAP) and ten hospital-acquired pneumonia (HAP)...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28623550/antibiotic-susceptibility-profiles-among-campylobacter-isolates-obtained-from-international-travelers-between-2007-and-2014
#11
A Post, D Martiny, N van Waterschoot, M Hallin, U Maniewski, E Bottieau, M Van Esbroeck, E Vlieghe, S Ombelet, O Vandenberg, J Jacobs
Campylobacter infection is a common cause of diarrhea among international travelers. We studied antibiotic resistance patterns among Campylobacter isolates obtained from international travelers according to travel destination. Three collections of isolates obtained from international travelers between 2007 and 2014 (Institute of Tropical Medicine, the "Laboratoire Hospitalier Universitaire de Bruxelles "and the Belgian National Reference Centre for Campylobacter) were used. Isolates were tested for minimal inhibitory concentration (MIC) values (E-test macromethod) for fluoroquinolones, macrolides, tetracyclines, amoxicillin-clavulanic acid, and meropenem...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28620845/cross-resistance-between-voriconazole-and-fluconazole-for-non-albicans-candida-infection-a-case-case-control-study
#12
Y Wang, Q Yang, L Chen, L Liu, R Hao, T Zhang, X Wang, J Lei, J Xie, Y Dong
Cross-resistance (CR) between voriconazole and fluconazole for non-albicans Candida (NAC) species is not uncommon, but little is known about the risk factors and clinical consequences associated with this resistance phenotype. A case-case-control study was performed at a university-affiliated hospital in China between November 2012 and April 2016. The two case groups respectively comprised patients with a mono-resistance (MR) NAC infection (fluconazole or voriconazole resistance) and patients with a CR NAC infection (fluconazole and voriconazole resistance)...
June 15, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28620844/comparison-of-the-characteristics-of-mycobacterium-tuberculosis-isolates-from-sputum-and-lung-lesions-in-chronic-tuberculosis-patients
#13
M-S Hong, Y Kim, E-J Cho, J-S Lee, H-K Kwak, J-H Kim, C-T Kim, J-S Cho, S-K Park, D Jeon, Y-I Choi, H Lee, S-Y Eum
Mycobacterium tuberculosis (Mtb) in sputum originates from lung cavities in tuberculosis (TB) patients. But drug susceptibility testing (DST) of sputum Mtb can not be conducted the same as in the lung because mutagenesis of bacilli may be happening in the lung during treatment and result in the possibility of the presence of heterogeneous drug-resistant subpopulations in the different lung lesions. This could be one of the reasons for low cure rates for multi-drug resistant (MDR)-TB. We studied the resected lungs of nine surgery patients with chronic TB...
June 15, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28612153/streptococcus-pneumoniae-antimicrobial-resistance-decreased-in-the-helsinki-metropolitan-area-after-routine-10-valent-pneumococcal-conjugate-vaccination-of-infants-in-finland
#14
R Sihvonen, L Siira, M Toropainen, P Kuusela, A Pätäri-Sampo
Since the introduction of 10-valent pneumococcal conjugate vaccine (PCV10) into the Finnish national vaccination program in September 2010, the incidence of invasive pneumococcal disease in children has decreased steeply in Finland. We studied the antimicrobial susceptibility of invasive and non-invasive Streptococcus pneumoniae (pneumococcus) isolated in the Helsinki Metropolitan Area during 2009-2014. We divided the data into two age groups: isolates from patients <5 years old and ≥5 years old. We also studied the serotype distribution of invasive isolates and of a subset of non-invasive multidrug-resistant isolates...
June 13, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28601970/suppressing-the-crispr-cas-adaptive-immune-system-in-bacterial-infections
#15
REVIEW
P Gholizadeh, M Aghazadeh, M Asgharzadeh, H S Kafil
Clustered regularly interspaced short palindromic repeats (CRISPR) coupled with CRISPR-associated (Cas) proteins (CRISPR/Cas) are the adaptive immune system of eubacteria and archaebacteria. This system provides protection of bacteria against invading foreign DNA, such as transposons, bacteriophages and plasmids. Three-stage processes in this system for immunity against foreign DNAs are defined as adaptation, expression and interference. Recent studies suggested a correlation between the interfering of the CRISPR/Cas locus, acquisition of antibiotic resistance and pathogenicity island...
June 11, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28600626/mucosa-associated-microbiota-signature-in-colorectal-cancer
#16
R Gao, C Kong, L Huang, H Li, X Qu, Z Liu, P Lan, J Wang, H Qin
The aim of this study was to explore the gut microbiota profiles of colorectal cancer (CRC) patients and to examine the relationship between gut microbiota and other key molecular factors involved in CRC tumorigenesis. In this study, a 16S rDNA sequencing platform was used to identify possible differences in the microbiota signature between CRC and adjacent normal mucosal tissue. Differences in the microbiota composition in different anatomical colorectal tumor sites and their potential association with KRAS mutation were also explored...
June 9, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28593375/clinical-implication-of-novel-drug-resistance-conferring-mutations-in-resistant-tuberculosis
#17
REVIEW
N P Mnyambwa, D-J Kim, E S Ngadaya, R Kazwala, P Petrucka, S G Mfinanga
Evolving novel and/or unfamiliar mutations are revolutionizing the pathways of antibiotic resistance of clinical tuberculosis. The accumulation and interaction of these poorly characterized mutations augment the complexity of resistant pathogenic strains and raise public health concerns. This article reviews our current understanding of the genetic changes that characterize drug resistance in tuberculosis and highlights the imperative for further investigations focusing on the effects of an individual mutation and interacting mutations with detailed strain epidemiology, particularly as these pertain to technology-limited countries with high tuberculosis incidence rates...
June 7, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28589426/clinical-condition-and-comorbidity-as-determinants-for-blood-culture-positivity-in-patients-with-skin-and-soft-tissue-infections
#18
F V van Daalen, M C Kallen, C M A van den Bosch, M E J L Hulscher, S E Geerlings, J M Prins
The utility of performing blood cultures in patients with a suspected skin infection is debated. We investigated the association between blood culture positivity rates and patients' clinical condition, including acute disease severity and comorbidity. We performed a retrospective study, including patients with cellulitis and wound infection who had been enrolled in three Dutch multicenter studies between 2011 and 2015. Patients' acute clinical condition was assessed using the Modified Early Warning Score (MEWS; severe: MEWS ≥2) and comorbidity with the Charlson Comorbidity Index (CCI; severe: CCI ≥2)...
June 7, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28589425/comparison-of-the-immuview-and-the-binaxnow-antigen-tests-in-detection-of-streptococcus-pneumoniae-and-legionella-pneumophila-in-urine
#19
S Athlin, A Iversen, V Özenci
The use of urinary antigen tests (UATs) may provide early etiology in pneumonia, and facilitates rapid and directed antibiotic treatment. In this study, we evaluated the novel lateral flow ImmuView Streptococcus pneumoniae and Legionella pneumophila UAT, which detects pneumococcal and L. pneumophila serogroup 1 antigens in a combined test. We compared the ImmuView UAT with the BinaxNOW S. pneumoniae UAT and the BinaxNOW L. pneumophila UAT in 147 patients with pneumococcal bacteremia (n = 48), non-pneumococcal non-Legionella bacteremia (n = 93) and Legionella infections in the lower airways (L...
June 6, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28584896/importance-of-tissue-sampling-laboratory-methods-and-patient-characteristics-for-detection-of-pneumocystis-in-autopsied-lungs-of-non-immunosuppressed-individuals
#20
REVIEW
S L Vargas, C Ponce, R Bustamante, E Calderón, G Nevez, Y De Armas, O Matos, R F Miller, M J Gallo
To understand the epidemiological significance of Pneumocystis detection in a lung tissue sample of non-immunosuppressed individuals, we examined sampling procedures, laboratory methodology, and patient characteristics of autopsy series reported in the literature. Number of tissue specimens, DNA-extraction procedures, age and underlying diagnosis highly influence yield and are critical to understand yield differences of Pneumocystis among reports of pulmonary colonization in immunocompetent individuals.
June 5, 2017: European Journal of Clinical Microbiology & Infectious Diseases
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