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Nosocomial infection

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https://www.readbyqxmd.com/read/29224053/spontaneous-bacteremia-and-spontaneous-bacterial-peritonitis-share-similar-prognosis-in-patients-with-cirrhosis-a-cohort-study
#1
Sebastián Marciano, Melisa Dirchwolf, Carla S Bermudez, Natalia Sobenko, Leila Haddad, Federico Genre Bert, Laura Barcán, Astrid Smud, Maria Lourdes Posadas-Martínez, Diego Giunta, Adrián Gadano
BACKGROUND AND AIMS: Spontaneous bacteremia is a poorly characterized infection in patients with cirrhosis. We compared the incidence of mortality and acute kidney injury in patients with spontaneous bacterial peritonitis and spontaneous bacteremia, and identified risk factors for mortality and acute kidney injury in patients with spontaneous bacteremia. METHODS: We performed a retrospective cohort study of patients with cirrhosis and spontaneous bacteremia or spontaneous bacterial peritonitis from 2008 to 2016 at Hospital Italiano, Buenos Aires...
December 9, 2017: Hepatology International
https://www.readbyqxmd.com/read/29223098/trisubstituted-barbiturates-and-thiobarbiturates-synthesis-and-biological-evaluation-as-xanthine-oxidase-inhibitors-antioxidants-antibacterial-and-anti-proliferative-agents
#2
Joana Figueiredo, João L Serrano, Eunice Cavalheiro, Leena Keurulainen, Jari Yli-Kauhaluoma, Vânia M Moreira, Susana Ferreira, Fernanda C Domingues, Samuel Silvestre, Paulo Almeida
Barbituric and thiobarbituric acid derivatives have become progressively attractive to medicinal chemists due to their wide range of biological activities. Herein, different series of 1,3,5-trisubstituted barbiturates and thiobarbiturates were prepared in moderate to excellent yields and their activity as xanthine oxidase inhibitors, antioxidants, antibacterial agents and as anti-proliferative compounds was evaluated in vitro. Interesting bioactive barbiturates were found namely, 1,3-dimethyl-5-[1-(2-phenylhydrazinyl)ethylidene]pyrimidine-2,4,6(1H,3H,5H)-trione (6c) and 1,3-dimethyl-5-[1-[2-(4-nitrophenyl)hydrazinyl]ethylidene]pyrimidine-2,4,6(1H,3H,5H)-trione (6e), which showed concomitant xanthine oxidase inhibitory effect (IC50 values of 24...
November 27, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29221301/matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-a-powerful-tool-for-identification-of-corynebacterium-species
#3
Rong Bao, Xiaodong Gao, Bijie Hu, Zhaoyan Zhou
Background: Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) is a powerful tool that has initiated a revolution in the clinical microbiology laboratory for identification of nosocomial pathogens. The efficacy of MALDI-TOF MS produced by bioMerieux, Marcy l'Etoile, France (VITEK MS) for detecting Corynebacterium remains unknown. Methods: Corynebacterium isolates were isolated from clinical specimen in a tertial teaching hospital from 2012 to 2013...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29220744/sensitive-detection-of-pyoverdine-with-an-electrochemical-sensor-based-on-electrochemically-generated-graphene-functionalized-with-gold-nanoparticles
#4
Islem Gandouzi, Mihaela Tertis, Andreea Cernat, Amina Bakhrouf, Maria Coros, Stela Pruneanu, Cecilia Cristea
The design and development of an electrochemical sensor for the sensitive and selective determination of pyoverdine, a virulence factor secreted by Pseudomonas aeruginosa, bacteria involved in nosocomial infections is presented in this work. The presence of pyoverdine in water and body fluids samples can be directly linked to the presence of the Pseudomonas bacteria, thus being a nontoxic and low cost marker for the detection of water pollution as well as for the biological contamination of other media. The sensor was elaborated using layer-by-layer technique for the deposition of a graphene‑gold nanoparticles composite film on the graphite-based screen printed electrode, from aqueous suspension...
December 5, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/29220387/psra-controls-the-synthesis-of-the-pseudomonas-aeruginosa-quinolone-signal-via-repression-of-the-fade-homolog-pa0506
#5
Greg Wells, Samantha Palethorpe, Everett C Pesci
Pseudomonas aeruginosa is a ubiquitous, Gram-negative opportunistic pathogen that can cause disease in various sites within the human body. This bacterium is a major source of nosocomial infections that are often difficult to treat due to high intrinsic antibiotic resistance and coordinated virulence factor production. P. aeruginosa utilizes three cell-to-cell signaling systems to regulate numerous genes in response to cell density. One of these systems utilizes the small molecule 2-heptyl-3-hydroxy-4-quinolone (Pseudomonas quinolone signal [PQS]) as a signal that acts as a co-inducer for the transcriptional regulator PqsR...
2017: PloS One
https://www.readbyqxmd.com/read/29216435/dysregulated-systemic-inflammation-favors-bacterial-growth-and-development-of-nosocomial-infections
#6
G Umberto Meduri, Reba Umberger
No abstract text is available yet for this article.
December 7, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29215335/previous-antibiotic-exposure-and-antimicrobial-resistance-patterns-of-acinetobacter-spp-and-pseudomonas-aeruginosa-isolated-from-patients-with-nosocomial-infections
#7
Zorana M Djordjevic, Marko M Folic, Slobodan M Jankovic
BACKGROUND: The alarming spread of antibiotic-resistant bacteria causing healthcare-associated infections has been extensively reported in recent medical literature. AIMS: To compare trends in antimicrobial consumption and development of resistance among isolates of Acinetobacter spp. and Pseudomonas aeruginosa that cause hospital infections. STUDY DESIGN: Cross-sectional study. METHODS: A study was conducted in a tertiary healthcare institution in central Serbia, during the 7-year period between January 2009 and December 2015...
December 1, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29215330/quantifying-hospital-acquired-carriage-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae-among-patients-in-dutch-hospitals
#8
Marjolein F Q Kluytmans-van den Bergh, Suzan P van Mens, Manon R Haverkate, Martin C J Bootsma, Jan A J W Kluytmans, Marc J M Bonten
BACKGROUND Extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) are emerging worldwide. Contact precautions are recommended for known ESBL-E carriers to control the spread of ESBL-E within hospitals. OBJECTIVE This study quantified the acquisition of ESBL-E rectal carriage among patients in Dutch hospitals, given the application of contact precautions. METHODS Data were used from 2 cluster-randomized studies on isolation strategies for ESBL-E: (1) the SoM study, performed in 14 Dutch hospitals from 2011 through 2014 and (2) the R-GNOSIS study, for which data were limited to those collected in a Dutch hospital in 2014...
December 7, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29214477/prevalence-of-occult-hepatitis-c-virus-among-hemodialysis-patients-in-tanta-university-hospitals-a-single-center-study
#9
Ghada Abdelmoemen, Samy Abdelkader Khodeir, Sabry Abou-Saif, Abdelrahman Kobtan, Sherief Abd-Elsalam
Occult hepatitis C virus infection (OCI) is a newly defined type of infection by the chronic hepatitis virus (HCV) distinguished by the existence of HCV RNA in liver tissue and/or peripheral blood mononuclear cells (PBMCs) in patients whose plasma are devoid of both positive serology and RNA. Patients on maintenance hemodialysis evince a higher HCV prevalence than the general population due to high nosocomial transmission by the dialysis units. We investigated the prevalence of occult HCV infection in patients attending our university hemodialysis centers for maintenance hemodialysis...
December 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29212881/risk-of-rotavirus-nosocomial-spread-after-inpatient-pentavalent-rotavirus-vaccination
#10
Annika M Hofstetter, Kirsten Lacombe, Eileen J Klein, Charla Jones, Bonnie Strelitz, Elizabeth Jacobson, Daksha Ranade, M Leanne Ward, Slavica Mijatovic-Rustempasic, Diana Evans, Mary Wikswo, Michael D Bowen, Umesh D Parashar, Daniel C Payne, Janet A Englund
BACKGROUND: Infants born prematurely or with underlying conditions are at increased risk of severe rotavirus disease and associated complications. Given the theoretical risk of nosocomial transmission of vaccine-type rotavirus, rotavirus vaccination is recommended for infants at or after discharge from neonatal care settings. Because the first dose should be administered by 104 days of age, some infants may be age-ineligible for vaccination if delayed until discharge. METHODS: This prospective cohort included infants admitted to an urban academic medical center between birth and 104 days who received care in intensive care settings...
December 6, 2017: Pediatrics
https://www.readbyqxmd.com/read/29211793/assessing-infection-control-practices-to-protect-health-care-workers-and-patients-in-malawi-from-nosocomial-transmission-of-mycobacterium-tuberculosis
#11
Robert J Flick, Adamson Munthali, Katherine Simon, Mina Hosseinipour, Maria H Kim, Lameck Mlauzi, Peter N Kazembe, Saeed Ahmed
Transmission of Mycobacterium tuberculosis (TB) in health settings threatens health care workers and people living with HIV in sub-Saharan Africa. Nosocomial transmission is reduced with implementation of infection control (IC) guidelines. The objective of this study is to describe implementation of TB IC measures in Malawi. We conducted a cross-sectional study utilizing anonymous health worker questionnaires, semi-structured interviews with facility managers, and direct observations at 17 facilities in central Malawi...
2017: PloS One
https://www.readbyqxmd.com/read/29211190/incidence-and-risk-factors-for-surgical-site-infection-in-general-surgeries
#12
Rafael Lima Rodrigues de Carvalho, Camila Cláudia Campos, Lúcia Maciel de Castro Franco, Adelaide De Mattia Rocha, Flávia Falci Ercole
OBJECTIVE: to estimate the incidence of surgical site infection in general surgeries at a large Brazilian hospital while identifying risk factors and prevalent microorganisms. METHOD: non-concurrent cohort study with 16,882 information of patients undergoing general surgery from 2008 to 2011. Data were analyzed by descriptive, bivariate and multivariate analysis. RESULTS: the incidence of surgical site infection was 3.4%. The risk factors associated with surgical site infection were: length of preoperative hospital stay more than 24 hours; duration of surgery in hours; wound class clean-contaminated, contaminated and dirty/infected; and ASA index classified into ASA II, III and IV/V...
December 4, 2017: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/29209595/antimicrobial-resistance-of-hypervirulent-klebsiella-pneumoniae-epidemiology-hypervirulence-associated-determinants-and-resistance-mechanisms
#13
REVIEW
Chang-Ro Lee, Jung Hun Lee, Kwang Seung Park, Jeong Ho Jeon, Young Bae Kim, Chang-Jun Cha, Byeong Chul Jeong, Sang Hee Lee
Klebsiella pneumoniae is one of the most clinically relevant species in immunocompromised individuals responsible for community-acquired and nosocomial infections, including pneumonias, urinary tract infections, bacteremias, and liver abscesses. Since the mid-1980s, hypervirulent K. pneumoniae, generally associated with the hypermucoviscosity phenotype, has emerged as a clinically significant pathogen responsible for serious disseminated infections, such as pyogenic liver abscesses, osteomyelitis, and endophthalmitis, in a generally younger and healthier population...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29209288/antimicrobial-effects-of-sulfonyl-derivative-of-2-5h-furanone-against-planktonic-and-biofilm-associated-methicillin-resistant-and-susceptible-staphylococcus-aureus
#14
Irshad S Sharafutdinov, Elena Y Trizna, Diana R Baidamshina, Maria N Ryzhikova, Regina R Sibgatullina, Alsu M Khabibrakhmanova, Liliya Z Latypova, Almira R Kurbangalieva, Elvira V Rozhina, Mareike Klinger-Strobel, Rawil F Fakhrullin, Mathias W Pletz, Mikhail I Bogachev, Airat R Kayumov, Oliwia Makarewicz
The gram-positive opportunistic bacterium Staphylococcus aureus is one of the most common causatives of a variety of diseases including skin and skin structure infection or nosocomial catheter-associated infections. The biofilm formation that is an important virulence factor of this microorganism renders the antibiotic therapy ineffective, because biofilm-embedded bacteria exhibit strongly increased tolerance to antimicrobials. Here, we describe a novel 3-chloro-5(S)-[(1R,2S,5R)-2-isopropyl-5-methylcyclohexyloxy]-4-[4-methylphenylsulfonyl]-2(5H)-furanone (F105), possessing a sulfonyl group and l-menthol moiety...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29208882/thrombocytopenia-in-late-onset-neonatal-sepsis-and-its-relationship-with-specific-organism-in-a-tertiary-care-hospital
#15
F Ahmed, A Y Raj, L N Begum
Late onset neonatal sepsis (LONS) is a common complication in the Neonatal Intensive Care Unit (NICU) especially in premature infants, in whom the clinical presentation can be subtle and nonspecific. Thrombocytopenia is an important complication of sepsis. The objective of the present study was to identify the organism-speci?c platelet response in neonate with culture proven LONS. In this retrospective study all the infants with blood culture positive LONS in the neonatal intensive care unit (NICU) at Square Hospitals Ltd...
October 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29207702/nagging-presence-of-clostridium-difficile-associated-diarrhoea-in-north-india
#16
Rama Chaudhry, Nidhi Sharma, Nitin Gupta, Kamla Kant, Tej Bahadur, Trupti M Shende, Lalit Kumar, Sushil K Kabra
Introduction: Clostridium Difficile Associated Diarrhoea (CDAD) is a significant cause of morbidity in hospitalised patients worldwide. The data on clinical epidemiology of this disease in Indian subcontinent is scarce. Aim: To evaluate the risk factors and clinical course of patients with CDAD. Materials and Methods: A cross-sectional study was planned at our tertiary care centre, All India Institute of Medical Sciences, whereby, all patients who had nosocomial diarrhea between 2010 and 2014 were included in the study...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29206501/synthesis-and-investigation-of-binding-interactions-of-1-4-benzoxazine-derivatives-on-topoisomerase-iv-in-acinetobacter-baumannii
#17
S Yilmaz, I Yalcin, S Okten, F K Onurdag, E Aki-Yalcin
Acinetobacter baumannii has emerged as an important pathogen for nosocomial infections having high morbidity and mortality. This pathogen is notorious for antimicrobial resistance to many common antimicrobial agents including fluoroquinolones, which have both intrinsic and acquired resistance mechanisms. Fluoroquinolones targeting the bacterial topoisomerase II (DNA gyrase and Topo IV) show potent broad-spectrum antibacterial activity by the stabilization of the covalent enzyme-DNA complex. However, their efficacy is now being threatened by an increasing prevalence of resistance...
November 2017: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/29205682/sibling-visitations-and-viral-infections-in-the-neonatal-intensive-care-unit
#18
Yuho Horikoshi, Kaoru Okazaki, Shigeko Miyokawa, Kazue Kinoshita, Hiroshi Higuchi, Junichi Suwa, Yuta Aizawa, Kahoru Fukuoka
BACKGROUND: Sibling visitations to the neonatal intensive care unit (NICU) are a part of family-centered care, which is now being increasingly endorsed as a positive development in patient care. However, sibling visitations pose a risk of viral infections such that many NICUs in Japan impose strict limits on the practice. The aim of our study was to assess whether sibling visitations to the NICU are related to an increase in the nosocomial viral infection rate. METHODS: This retrospective study was conducted between April 2012 and March 2017 at Tokyo Metropolitan Children's Medical Center in Japan...
December 5, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29205552/the-role-of-the-cror-response-regulator-in-resistance-of-enterococcus-faecalis-to-d-cycloserine-is-defined-using-an-inducible-receiver-domain
#19
Cécile Muller, Sébastien Massier, Yoann Le Breton, Alain Rincé
Enterococcus faecalis is an opportunistic multidrug-resistant human pathogen causing severe nosocomial infections. Previous investigations revealed that the CroRS two-component regulatory pathway likely displays a pleiotropic role in E. faecalis, involved in virulence, macrophage survival, oxidative stress response as well as antibiotic resistance. Therefore, CroRS represents an attractive potential new target for antibiotherapy. In this report, we further explored CroRS cellular functions by characterizing the CroR regulon: the "domain swapping" method was applied and a CroR chimera protein was generated by fusing the receiver domain from NisR to the output domain from CroR...
December 4, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/29205192/genetic-diversity-study-of-various-%C3%AE-lactamase-producing-multidrug-resistant-escherichia-coli-isolates-from-a-tertiary-care-hospital-using-eric-pcr
#20
Jayanti Jena, Nagen Kumar Debata, Rajesh Kumar Sahoo, Mahendra Gaur, Enketeswara Subudhi
BACKGROUND & OBJECTIVES: The prevalence of multidrug-resistant (MDR) Escherichia coli isolates producing β-lactamase enzyme is a growing problem across the globe. Strain typing is an epidemiologically important tool not only for detecting the cross transmission of nosocomial pathogens but also for determining the source of infection. The present study was conducted to understand the clonal relationship among various β-lactamase-producing MDR E. coli isolates using enterobacterial repetitive intergenic consensus (ERIC) polymerase chain reaction (PCR)...
July 2017: Indian Journal of Medical Research
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