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https://www.readbyqxmd.com/read/28335562/virus-bacteria-interactions-an-emerging-topic-in-human-infection
#1
REVIEW
Erin A Almand, Matthew D Moore, Lee-Ann Jaykus
Bacteria and viruses often occupy the same niches, however, interest in their potential collaboration in promoting wellness or disease states has only recently gained traction. While the interaction of some bacteria and viruses is well characterized (e.g., influenza virus), researchers are typically more interested in the location of the infection than the manner of cooperation. There are two overarching types of bacterial-virus disease causing interactions: direct interactions that in some way aid the viruses, and indirect interactions aiding bacteria...
March 21, 2017: Viruses
https://www.readbyqxmd.com/read/28335438/the-food-production-environment-and-the-development-of-antimicrobial-resistance-in-human-pathogens-of-animal-origin
#2
REVIEW
Manjusha Lekshmi, Parvathi Ammini, Sanath Kumar, Manuel F Varela
Food-borne pathogens are a serious human health concern worldwide, and the emergence of antibiotic-resistant food pathogens has further confounded this problem. Once-highly-efficacious antibiotics are gradually becoming ineffective against many important pathogens, resulting in severe treatment crises. Among several reasons for the development and spread of antimicrobial resistance, their overuse in animal food production systems for purposes other than treatment of infections is prominent. Many pathogens of animals are zoonotic, and therefore any development of resistance in pathogens associated with food animals can spread to humans through the food chain...
March 14, 2017: Microorganisms
https://www.readbyqxmd.com/read/28334803/statistical-analysis-of-genetic-interactions-in-tn-seq-data
#3
Michael A DeJesus, Subhalaxmi Nambi, Clare M Smith, Richard E Baker, Christopher M Sassetti, Thomas R Ioerger
Tn-Seq is an experimental method for probing the functions of genes through construction of complex random transposon insertion libraries and quantification of each mutant's abundance using next-generation sequencing. An important emerging application of Tn-Seq is for identifying genetic interactions, which involves comparing Tn mutant libraries generated in different genetic backgrounds (e.g. wild-type strain versus knockout strain). Several analytical methods have been proposed for analyzing Tn-Seq data to identify genetic interactions, including estimating relative fitness ratios and fitting a generalized linear model...
February 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28334789/comparative-evaluation-of-norovirus-infection-in-children-with-acute-gastroenteritis-by-rapid-immunochromatographic-test-rt-pcr-and-real-time-rt-pcr
#4
Kattareeya Kumthip, Pattara Khamrin, Wilaiporn Saikruang, Kanittapon Supadej, Hiroshi Ushijima, Niwat Maneekarn
Immunochromatographic (IC) test for norovirus detection is a rapid and simple detection method. This study evaluated the sensitivity and specificity of a recent version of R-Biopharm RIDA®QUICK Norovirus IC assay for norovirus detection in fecal specimens from children hospitalized with acute gastroenteritis. Fecal specimens were tested by IC kit in comparison with gold standard reverse transcription polymerase chain reaction (RT-PCR) and real-time RT-PCR. The IC kit showed high sensitivity and specificity comparable with PCR-based methods...
March 2, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28334725/predominance-of-g9p-4-rotavirus-from-children-with-acute-gastroenteritis-in-northwestern-mexico
#5
Leticia Felix-Valenzuela, Dora Patricia Cooley-García, Manuel Alberto Cano-Rangel, Maria de Los Angeles Durazo-Arvizu, Veronica Mata-Haro
In Mexico, group A rotavirus (RVA) infections remain the most common cause of severe dehydrating diarrhea in children. This study was conducted to examine the circulating RVA strains in the northwest region of Mexico. RVA strains collected from stool samples of children were genotyped, and their partial sequences were analyzed. RT-PCR of the VP4 and VP7 genes showed the partial G9P[4] genotype in all the samples. Sequencing and phylogenetic analysis of the partial VP7 gene amplicons of 10 strains showed that they clustered in the RVA G9 lineage III, and 7 of them showed 100% identity with the reference strain LB1562, which was collected in the USA 2 years earlier...
March 23, 2017: Intervirology
https://www.readbyqxmd.com/read/28334487/growing-up-with-perinatal-human-immunodeficiency-virus-a-life-not-expected
#6
Elaine Fay Williams
AIM AND OBJECTIVES: To describe the lived experience of young adults with perinatally acquired HIV (PaHIV). BACKGROUND: The advancement of the highly active antiretroviral treatment, PaHIV-infection has transformed into a chronic lifelong illness that is faced by young adults who grew up with HIV. The known challenges that are associated with HIV are poverty, stigma and social and emotional isolation. DESIGN: This was a qualitative single interview study of a convenience sample of PaHIV-infected young adults receiving care at a large metropolitan pediatric hospital...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334246/the-role-of-the-beetle-hypocryphalus-mangiferae-coleoptera-curculionidae-in-the-spatiotemporal-dynamics-of-mango-wilt
#7
Tarcísio Visintin da Silva Galdino, Dalton de Oliveira Ferreira, Paulo Antônio Santana Júnior, Lucas de Paulo Arcanjo, Elenir Aparecida Queiroz, Renato Almeida Sarmento, Marcelo Coutinho Picanço
The knowledge of the spatiotemporal dynamics of pathogens and their vectors is an important step in determining the pathogen dispersion pattern and the role of vectors in disease dynamics. However, in the case of mango wilt little is known about its spatiotemporal dynamics and the relationship of its vector [the beetle Hypocryphalus mangiferae (Stebbing 1914)] to these dynamics. The aim of this work was to determine the spatial-seasonal dynamic of H. mangiferae attacks and mango wilt in mango orchards and to verify the importance of H...
March 3, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28333940/distinct-transcriptome-profiles-of-gag-specific-cd8-t-cells-temporally-correlated-with-the-protection-elicited-by-siv%C3%AE-nef-live-attenuated-vaccine
#8
Wuxun Lu, Yanmin Wan, Fangrui Ma, R Paul Johnson, Qingsheng Li
The live attenuated vaccine (LAV) SIVmac239Δnef (SIVΔnef) confers the best protection among all the vaccine modalities tested in rhesus macaque model of HIV-1 infection. This vaccine has a unique feature of time-dependent protection: macaques are not protected at 3-5 weeks post vaccination (WPV), whereas immune protection emerges between 15 and 20 WPV. Although the exact mechanisms of the time-dependent protection remain incompletely understood, studies suggested that both cellular and humoral immunities contribute to this time-dependent protection...
2017: PloS One
https://www.readbyqxmd.com/read/28333347/polymyxin-resistant-carbapenem-resistant-acinetobacter-baumannii-is-eradicated-by-a-triple-combination-of-agents-that-lack-individual-activity
#9
Justin R Lenhard, Visanu Thamlikitkul, Fernanda P Silveira, Samira M Garonzik, Xun Tao, Alan Forrest, Beom Soo Shin, Keith S Kaye, Jürgen B Bulitta, Roger L Nation, Jian Li, Brian T Tsuji
Objectives: The emergence of polymyxin resistance threatens to leave clinicians with few options for combatting drug-resistant Acinetobacter baumannii . The objectives of the current investigation were to define the in vitro emergence of polymyxin resistance and identify a combination regimen capable of eradicating A. baumannii with no apparent drug susceptibilities. Methods: Two clonally related, paired, A. baumannii isolates collected from a critically ill patient who developed colistin resistance while receiving colistin methanesulfonate in a clinical population pharmacokinetic study were evaluated: an A...
February 28, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333340/evaluation-of-the-new-genotype-ntm-dr-kit-for-the-molecular-detection-of-antimicrobial-resistance-in-non-tuberculous-mycobacteria
#10
Faiza Mougari, Jade Loiseau, Nicolas Veziris, Christine Bernard, Béatrice Bercot, Wladimir Sougakoff, Vincent Jarlier, Laurent Raskine, Emmanuelle Cambau
Objectives: Non-tuberculous mycobacteria (NTM) are emerging pathogens causing difficult-to-treat infections. We tested a new assay (GenoType NTM-DR) that detects natural and acquired resistance mechanisms to macrolides and aminoglycosides in frequently isolated NTM species. Methods: Performance was assessed on 102 isolates including reference strains [16 Mycobacterium avium , 10 Mycobacterium intracellulare , 8 Mycobacterium chimaera , 15 Mycobacterium chelonae and 53 Mycobacterium abscessus (including subsp...
February 28, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333257/comparative-effectiveness-of-linezolid-versus-vancomycin-as-definitive-antibiotic-therapy-for-heterogeneously-resistant-vancomycin-intermediate-coagulase-negative-staphylococcal-central-line-associated-bloodstream-infections-in-a-neonatal-intensive-care-unit
#11
A C Blanchard, E Fortin, C Laferrière, I Goyer, A Moussa, J Autmizguine, C Quach
Objectives: Heterogeneously resistant vancomycin-intermediate coagulase-negative staphylococci (hVICoNS) are emerging pathogens causing central-line-associated bloodstream infections (CLABSIs) in neonatal intensive care unit (NICU) patients. Given the burden of disease associated with CLABSI and the current lack of therapeutic guidelines, we aimed to compare the effectiveness of linezolid versus vancomycin used as the definitive antibiotic therapy for hVICoNS CLABSI. Methods: We performed a retrospective cohort study of infants with hVICoNS CLABSI from a single NICU between 2009 and 2014, treated with either linezolid or vancomycin as definitive antibiotic therapy...
March 3, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333193/increased-activity-of-colistin-in-combination-with-amikacin-against-escherichia-coli-co-producing-ndm-5-and-mcr-1
#12
Yu-Feng Zhou, Meng-Ting Tao, Youjun Feng, Run-Shi Yang, Xiao-Ping Liao, Ya-Hong Liu, Jian Sun
Objectives: Colistin and carbapenem are two lines of last-resort antibiotics against lethal infections caused by MDR Gram-negative pathogens. The emergence of carbapenemase-positive Escherichia coli with colistin resistance poses a serious threat to public health worldwide. Here we report, for the first time (to the best of our knowledge), a novel combination therapy used for the treatment of E. coli co-producing MCR-1 and NDM-5. Methods: The MICs of colistin were determined alone and with 1-4 mg/L amikacin...
February 20, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333172/aesthetic-breast-surgery-and-concomitant-procedures-incidence-and-risk-factors-for-major-complications-in-73-608-cases
#13
Varun Gupta, Max Yeslev, Julian Winocour, Ravinder Bamba, Charles Rodriguez-Feo, James C Grotting, K Kye Higdon
Background: Major complications following aesthetic breast surgery are uncommon and thus assessment of risk factors is challenging. Objectives: To determine the incidence and risk factors of major complications following aesthetic breast surgery and concomitant procedures. Methods: A prospective cohort of patients who enrolled into the CosmetAssure (Birmingham, AL) insurance program and underwent aesthetic breast surgery between 2008 and 2013 was identified...
January 20, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28332754/detection-of-carbapenemase-producing-organisms-with-a-carbapenem-based-fluorogenic-probe
#14
Wuyu Mao, Lingying Xia, Hexin Xie
Antibiotic resistance has become a major challenge to public health worldwide. This crisis is further aggravated by the increasing emergence of bacterial resistance to carbapenems, typically considered as the antibiotics of last resort, which is mainly due to the production of carbapenem-hydrolyzing carbapenemases in bacteria. Herein, the carbapenem-based fluorogenic probe CB-1 with an unprecedented enamine-BODIPY switch is developed for the detection of carbapenemase activity. This reagent is remarkably specific towards carbapenemases over other prevalent β-lactamases...
March 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28332648/west-nile-virus-epizootics-in-the-camargue-france-in-2015-and-reinforcement-of-surveillance-and-control-networks
#15
C Bahuon, C Marcillaud-Pitel, L Bournez, A Leblond, C Beck, J Hars, I Leparc-Goffart, G L'Ambert, M-C Paty, L Cavalerie, C Daix, P Tritz, B Durand, S Zientara, S Lecollinet
West Nile virus (WNV) infection is a non-contagious disease mainly transmitted by the bites of infected mosquitoes from the genus Culex. The virus is maintained in a mosquito-bird-mosquito cycle, and can accidentally be transmitted to mammalian hosts. Among mammalian hosts, equines and humans are the most sensitive to WNV infection and can develop severe meningoencephalitis. As WNV infections are zoonotic and can be severe in humans and equines, West Nile fever is considered to be a public and animal health concern...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332640/leptospirosis-in-domestic-animals-in-france-serological-results-from-1988-to-2007
#16
G André-Fontaine
Leptospirosis is a common infection in domestic animals. The microscopic agglutination test (MAT) is used for serological diagnosis. From 1988 to 2007, the Leptospira Medical and Molecular Bacteriology Laboratory at the Nantes National College of Veterinary Medicine, Food Science and Engineering used the MAT to test serum samples from more than 40,000 cattle, 40,000 pigs, 20,000 horses and 9,500 dogs. Five Leptospira serogroups were prominent, with specific variations within the four animal species: Icterohaemorrhagiae, Australis, Sejroë, Grippotyphosa and Autumnalis...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332345/high-incidence-of-virulence-factors-among-clinical-enterococcus-faecalis-isolates-in-southwestern-iran
#17
Hamid Heidari, Somayeh Hasanpour, Hadi Sedigh Ebrahim-Saraie, Mohammad Motamedifar
BACKGROUND: Over the past two decades, enterococci have emerged as an important agent responsible for hospital acquired infection. Several virulence factors contribute to the adherence, colonization, evasion of the host immune response, and pathogenicity and severity of the infection. Enterococcus faecalis is the most common and virulent species causing infections in hospitalized patients. The aim of the present study was to examine the prevalence of genes encoding virulence factors and antimicrobial resistance patterns of E...
March 13, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28332306/impact-of-iatrogenic-iron-overload-on-the-course-of-hepatitis-c-in-dialysis-population-a-plea-for-caution
#18
Guy Rostoker, Nosratola D Vaziri
About 2.5% of the world population, corresponding to about 177 million individuals, are infected by hepatitis C virus (HCV), a small, single-stranded RNA virus. The prevalence of HCV infection among dialysis patients in Japan, Europe, and North America during the 2012 to 2015 period was found to be 8.7% in the DOPPS study. Nosocomial HCV spread in hemodialysis facilities still occurs. Increased hepatic tissue iron has been shown to play a deleterious role in the course of hepatitis C, favor development of fibrosis and cirrhosis and possibly increase the risk of liver cancer in the general population...
March 23, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28331805/prevotella-osteomyelitis-after-dental-capping-procedure
#19
Alexander Williams, Thomas Kerkering
We present a 49 year old man who presented to the emergency department with severe lower back pain of 5 days duration. One week prior he had been diagnosed with a right psoas muscle abscess and was discharged with a 28 day course of moxifloxacin after the preliminary culture from the psoas grew an anaerobic organism. MRI of the lumbar spine showed marrow edema in the L2 body, occupying most of the anterior two thirds of the body, with cortical erosion at the anteroinferior aspect of L1. Blood cultures were negative and bone biopsy of L2 showed neutrophilic invasion and reactive changes...
2017: IDCases
https://www.readbyqxmd.com/read/28331644/term-abdominal-pregnancy-revealed-by-amnioperitoneum-in-rural-area
#20
Henri Donald Mutarambirwa, Bruno Kenfack, Jovanny Tsuala Fouogue
Abdominal pregnancy (AP) accounts for 1% of ectopic implantations. In sub-Saharan Africa, the high prevalence of sexually transmitted infections explains the increasing frequency of this pathology. In Cameroon it rose from 1/10000 deliveries (1995) to 3.3/10000 (2015). Authors herein report a case of a viable abdominal pregnancy discovered at term during emergency laparotomy for suspected uterine rupture. The 24-year-old G2P0 patient was HIV-positive, under antiretrovirals, though AP exceptionally occurs in HIV patients...
2017: Case Reports in Obstetrics and Gynecology
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