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https://www.readbyqxmd.com/read/29243404/molecular-viability-testing-of-viable-but-non-culturable-bacteria-induced-by-antibiotic-exposure
#1
Seunguk Lee, Sungwoo Bae
Nucleic acid amplification-based methods are limited by their inability to discriminate between viable and dead cells. To overcome this drawback, propidium monoazide (PMA) combined with qPCR has been used to differentiate viable from nonviable cells in environmental samples. However, assessing bacterial physiology using PMA-qPCR remains a challenge due to its incapability of detecting metabolic activities, leading to overestimation of the viable bacteria population under an inactivation condition (e.g. antibiotic treatments)...
December 15, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/29243060/synovial-aspiration-and-serological-testing-in-two-stage-revision-arthroplasty-for-prosthetic-joint-infection-evaluation-before-reconstruction-with-a-mean-follow-up-of-twenty%C3%A2-seven%C3%A2-months
#2
Heinrich M L Mühlhofer, C Knebel, Florian Pohlig, Susanne Feihl, Norbert Harrasser, Johannes Schauwecker, Rüdiger von Eisenhart-Rothe
INTRODUCTION: The two-stage revision protocol is the gold standard for controlling and treating low-grade prosthetic joint infections of total hip and total knee arthroplasty. The antibiotic pause for diagnostic reasons before reconstruction (stage two) is discussed in relation to the persistence of the infection and the development of resistant bacterial strains. Serological markers and a synovial analysis are commonly used to exclude the persistence of infection. Therefore, we asked (1) is the serological testing of C-reactive protein and leucocytes a valuable tool to predict a persistence of infection? and (2) what is the role of synovial aspiration of Plymethylmethacrylat (PMMA) spacers in hip and knee joints? MATERIALS AND METHODS: One hundred twelve patients who were MSIS criteria-positive for a prosthetic joint infection were studied, including 45 total hip arthroplasties (THA) and 67 total knee artrhoplasties (TKA) patients...
December 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29242676/program-active-cognitive-behavioral-therapy-to-treat-depression-in-adults-with-type-2-diabetes-in-rural-appalachia
#3
Mary de Groot, Todd Doyle, Jennifer Averyt
High rates of type 2 diabetes (T2DM) and depression exist in rural Appalachia with limited access to psychotherapeutic treatment. No manualized cognitive behavioral therapy (CBT) treatment materials exist that are culturally tailored for individuals in this region with T2DM. We describe the development of the Program ACTIVE CBT intervention for use with adults with T2DM and depression by mental health providers in rural Appalachia. Qualitative and quantitative methods were used to test the feasibility and acceptability of Program ACTIVE...
August 2017: Journal of Cognitive Psychotherapy
https://www.readbyqxmd.com/read/29240994/using-mutations-for-pesticide-resistance-to-identify-the-cause-of-toxicity-in-environmental-samples
#4
Donald P Weston, Helen C Poynton, Kaley Major, Gary Wellborn, Michael J Lydy, Christoph Moschet, Richard Edward Connon
Traditional Toxicity Identification Evaluations (TIE) are applied to identify causal agents in complex environmental samples showing toxicity, and rely upon physical or chemical manipulation of samples. However, mutations conferring toxicant resistance provide the opportunity for a novel biologically-based TIE. Populations within the Hyalella azteca complex from pesticide-affected waterways were two and three orders of magnitude more resistant to the pyrethroid cyfluthrin and the organophosphate chlorpyrifos, respectively, than laboratory-cultured H...
December 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29238639/the-use-of-vacuum-dressings-for-dead-space-management-in-deep-surgical-site-infections-allows-implant-and-bone-graft-retention
#5
James P Watt, Robert N Dunn
Study Design: Retrospective, descriptive study. Objectives: Managing early surgical site infection following elective lumbar spine surgery remains a challenge with controversy regarding retention of instrumentation and bone graft. Wound closure may also pose considerable challenges. We aim to report on our method of managing deep surgical site infections complicating elective spine surgery with surgeon assembled deep vacuum dressings. Identification of causative organisms with their sensitivities was a secondary objective...
December 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29238331/sensitive-and-rapid-detection-of-the-plasmid-encoded-colistin-resistance-gene-mcr-1-in-enterobacteriaceae-isolates-by-loop-mediated-isothermal-amplification
#6
Dayang Zou, Simo Huang, Hong Lei, Zhan Yang, Yuxin Su, Xiaoming He, Qinghe Zhao, Yong Wang, Wei Liu, Liuyu Huang
The emergence of the plasmid-encoded colistin-resistance gene mcr-1 in Enterobacteriaceae represents a new threat to the treatment of infection in the clinical setting. A sensitive and rapid molecular method for detection of the mcr-1 gene in clinical isolates is needed to control the spread of this gene. In this study, we established a loop-mediated isothermal amplification (LAMP) assay for rapid detection of the mcr-1 gene. This assay was applied to cultured bacteria and spiked human stools. Real-time monitoring of turbidity and chromogenic visualization were used to assess the reaction results...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29237757/urine-lipoarabinomannan-glycan-in-hiv-negative-patients-with-pulmonary-tuberculosis-correlates-with-disease-severity
#7
Luisa Paris, Ruben Magni, Fatima Zaidi, Robyn Araujo, Neal Saini, Michael Harpole, Jorge Coronel, Daniela E Kirwan, Hannah Steinberg, Robert H Gilman, Emanuel F Petricoin, Roberto Nisini, Alessandra Luchini, Lance Liotta
An accurate urine test for pulmonary tuberculosis (TB), affecting 9.6 million patients worldwide, is critically needed for surveillance and treatment management. Past attempts failed to reliably detect the mycobacterial glycan antigen lipoarabinomannan (LAM), a marker of active TB, in HIV-negative, pulmonary TB-infected patients' urine (85% of 9.6 million patients). We apply a copper complex dye within a hydrogel nanocage that captures LAM with very high affinity, displacing interfering urine proteins. The technology was applied to study pretreatment urine from 48 Peruvian patients, all negative for HIV, with microbiologically confirmed active pulmonary TB...
December 13, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29237446/trichomoniasis-and-associated-co-infections-of-the-genital-tract-among-pregnant-women-presenting-at-two-hospitals-in-ghana
#8
Richard H Asmah, Harriet N A Blankson, Kekeli A Seanefu, Noah Obeng-Nkrumah, Georgina Awuah-Mensah, Momodou Cham, Patrick F Ayeh-Kumi
BACKGROUND: Trichomonas vaginalis (TV) infection is the most prevalent non-viral sexually transmitted pathogen worldwide. Among pregnant women, the infection may cause adverse birth outcomes such as premature rupture of membranes and premature labour. In view of the paucity of information relating to TV among Ghanaian pregnant women, this study investigated its prevalence and associated co-infections among pregnant women. METHODS: High vaginal swabs were obtained from 99 pregnant women using sterile cotton swab sticks...
December 13, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29234925/modelling-the-effects-of-psii-inhibitor-pulse-exposure-on-two-algae-in-co-culture
#9
Pierre-Jean Copin, Nathalie Chèvre
A weakness of standard testing procedures is that they do not consider interactions between organisms, and they focus only on single species. Furthermore, these procedures do not take into account pulse exposure. However, pulse exposure is of particular importance because in streams, after crop application and during and after precipitation, herbicide concentrations fluctuate widely and can exceed the Annual Average Environmental Quality Standards (AA-EQS), which aim to protect the aquatic environment. The sensitivity of the algae Scenedesmus vacuolatus and Pseudokirchneriella subcapitata in a co-culture exposed to pulses is thus analysed in this study...
December 12, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/29230973/sensitivity-specificity-and-predictive-probability-values-of-serum-agglutination-test-titres-for-the-diagnosis-of-salmonella-dublin-culture-positive-bovine-abortion-and-stillbirth
#10
C Sánchez-Miguel, J Crilly, J Grant, J F Mee
The objective of this study was to determine the diagnostic value of maternal serology for the diagnosis of Salmonella Dublin bovine abortion and stillbirth. A retrospective, unmatched, case-control study was carried out using twenty year's data (1989-2009) from bovine foetal submissions to an Irish government veterinary laboratory. Cases (n = 214) were defined as submissions with a S. Dublin culture-positive foetus from a S. Dublin unvaccinated dam where results of maternal S. Dublin serology were available...
December 12, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29229499/molecular-diagnosis-of-suspected-tuberculosis-from-archived-smear-slides-from-the-balimo-region-papua-new-guinea
#11
Vanina Guernier, Tanya Diefenbach-Elstob, Daniel Pelowa, Sandra Pollard, Graham Burgess, Emma S McBryde, Jeffrey Warner
BACKGROUND: Tuberculosis (TB) is a serious health problem in Papua New Guinea (PNG) with an estimated 30,000 new cases and 3,800 deaths each year. In the Balimo region of the Western Province, the diagnosis relies on clinical manifestations and on the microscopic detection of acid-fast bacilli in sputum smears, a technique with limited sensitivity. METHODS: We carried out a molecular diagnosis assay targeting DNA extracted from archived sputum smear slides collected from the Balimo region (2012-2014), without the need for a viable culture...
December 8, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29229275/frequency-of-treponema-pallidum-invasion-into-cerebrospinal-fluid-in-primary-or-secondary-early-stage-syphilis
#12
Mao Hagihara, Yuka Yamagishi, Hideo Kato, Yuichi Shibata, Arufumi Shiota, Daisuke Sakanashi, Hiroyuki Suematsu, Hiroki Watanabe, Nobuhiro Asai, Yusuke Koizumi, Tatsuro Furui, Seiichiro Takahashi, Koji Izumi, Hiroshige Mikamo
Frequency of Treponema pallidum invasion into cerebrospinal fluid (CSF) has not been clear at this present. Since it is impossible to culture T. pallidum in vitro at this present, we need molecular based-approach to detect it in CSF. Additionally, neurosyphilis is usually a late sequela, however it might result in asymptomatic neurosyphilis even at primary or secondary syphilis. This study was to reveal the frequency of T. pallidum invasion into CSF especially at primary or secondary syphilis with polymerase chain reaction (PCR) test...
December 8, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29228323/evaluation-of-a-genus-specific-elisa-and-a-commercial-aspergillus-western-blot-igg%C3%A2-immunoblot-kit-for-the-diagnosis-of-aspergillosis-in-common-bottlenose-dolphins-tursiops-truncatus
#13
Guillaume Desoubeaux, Carolina Le-Bert, Vanessa Fravel, Tonya Clauss, Alexa J Delaune, Jeny Soto, Eric D Jensen, Jennifer E Flower, Randall Wells, Gregory D Bossart, Carolyn Cray
Aspergillosis is a fungal infection with high mortality and morbidity rates. As in humans, its definitive diagnosis is difficult in animals, and thus new laboratory tools are required to overcome the diagnostic limitations due to low specificity and lack of standardization. In this study of common bottlenose dolphins (Tursiops truncatus), we evaluated the diagnostic performance of a new commercial immunoblot kit that had been initially developed for the serologic diagnosis of chronic aspergillosis in humans...
December 8, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29228208/advances-in-serodiagnostic-testing-for-lyme-disease-are-at-hand
#14
John A Branda, Barbara A Body, Jeff Boyle, Bernard M Branson, Raymond J Dattwyler, Erol Fikrig, Noel J Gerald, Maria Gomes-Solecki, Martin Kintrup, Michel Ledizet, Andrew E Levin, Michael Lewinski, Lance A Liotta, Adriana Marques, Paul S Mead, Emmanuel F Mongodin, Segaran Pillai, Prasad Rao, William H Robinson, Kristian M Roth, Martin E Schriefer, Thomas Slezak, Jessica Snyder, Allen C Steere, Jan Witkowski, Susan J Wong, Steven E Schutzer
The cause of Lyme disease, Borrelia burgdorferi, was discovered in 1983. A 2-tiered testing protocol was established for serodiagnosis in 1994, involving an enzyme immunoassay (EIA) or indirect fluorescence antibody, followed (if reactive) by immunoglobulin M and immunoglobulin G Western immunoblots. These assays were prepared from whole-cell cultured B. burgdorferi, lacking key in vivo expressed antigens and expressing antigens that can bind non-Borrelia antibodies. Additional drawbacks, particular to the Western immunoblot component, include low sensitivity in early infection, technical complexity, and subjective interpretation when scored by visual examination...
December 7, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29228192/quantitative-analysis-of-o2-and-fe2-profiles-in-gradient-tubes-for-cultivation-of-microaerophilic-iron-ii-oxidizing-bacteria
#15
U Lueder, G Druschel, D Emerson, A Kappler, C Schmidt
The classical approach for cultivation of neutrophilic microaerophilic Fe(II)-oxidizing bacteria are agar-based gradient tubes where these bacteria find optimal growth conditions in opposing gradients of oxygen (O2) and dissolved Fe(II) (Fe2+). The goals of this study were to quantify the temporal development of O2 and Fe2+ concentrations over time, to compare abiotic and microbially-inoculated tubes, and to test the suitability of different Fe(II)-sources for cultivation of freshwater and marine microaerophilic Fe(II)-oxidizers...
December 5, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29227955/developing-and-validating-a-perinatal-depression-screening-tool-in-kenya-blending-western-criteria-with-local-idioms-a-mixed-methods-study
#16
Eric P Green, Hawa Tuli, Edith Kwobah, D Menya, Irene Chesire, Christina Schmidt
BACKGROUND: Routine screening for perinatal depression is not common in most primary health care settings. The U.S. Preventive Services Task Force only recently updated their recommendation on depression screening to specifically recommend screening during the pre- and postpartum periods. While practitioners in high-income countries can respond to this new recommendation by implementing one of several existing depression screening tools developed in Western contexts, such as the Edinburgh Postnatal Depression Scale (EPDS) or the Patient Health Questionnaire-9 (PHQ-9), these tools lack strong evidence of cross-cultural equivalence, validity for case finding, and precision in measuring response to treatment in developing countries...
December 2, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29226760/the-diagnostic-performance-of-the-beta-glucan-assay-in-the-detection-of-intra-amniotic-infection-with-candida-species
#17
Percy Pacora, Roberto Romero, Offer Erez, Eli Maymon, Bogdan Panaitescu, Juan Pedro Kusanovic, Adi L Tarca, Chaur-Dong Hsu, Sonia S Hassan
INTRODUCTION: A bioassay based on the detection of beta-glucan, a constituent of the cell wall of fungi, has been successfully used to diagnose fungal infections in a variety of biological fluids but not yet in the amniotic fluid. OBJECTIVE: To determine the diagnostic performance of a beta-glucan bioassay in the detection of Candida species in the amniotic fluid. METHODS: The study population comprised women who had a singleton pregnancy without congenital or chromosomal abnormalities, who experienced preterm labor or preterm prelabor rupture of the fetal membranes, and who underwent transabdominal amniocentesis for clinical indications...
December 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29225753/study-of-bacterial-flora-associated-with-mobile-phones-of-healthcare-workers-and-non-healthcare-workers
#18
Raghavendra Rao Morubagal, Sowmya Govindanahalli Shivappa, Rashmi Padmanabha Mahale, Sumana Mhadevaiah Neelambike
Background and Objectives: Despite improvements in modern diagnosis and therapies, hospital acquired infections remain a leading problem of global health systems. Healthcare workers mobile phones is a reservoir for potential pathogens. Despite the high possibility of being contaminated, mobile phones are rarely clean and are often touched during or after examination of patients and handling of specimens without proper hand washing. The main objective of the present study was to isolate, identify different types of bacteria and their antibiotic sensitivity from mobile phones of healthcare workers and non-health-care workers...
June 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29224952/mul-do-a-multicomponent-index-for-the-quick-diagnosis-of-peritonitis-in-peritoneal-dialysis-patients
#19
Miguel Núñez Moral, Pablo Martínez-Camblor, Alejandra Méndez González, Carmen Rodríguez Suárez, Jose Emilio Sánchez Álvarez
Peritoneal infection is a common problem that has a negative impact on the survival of patients and the technique. The early administration of peritoneal infection treatment reduces complications. The goal of this study is to propose a multicomponent index (MUL+DO) for the quick and efficient diagnosis of peritoneal infection. We selected a training cohort of peritoneal effluent samples which were analysed by Multistix ® 10 SG Siemens test strips for leukocyte detection. Then, each sample was examined according to the gold standard: number of leukocytes, polymorphonuclear percentage and microbiological culture...
December 7, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29224776/development-of-a-sybr-green-i-real-time-pcr-for-detection-and-quantitation-of-orthopoxvirus-by-using-ectromelia-virus
#20
Wenyu Cheng, Xiaobing He, Huaijie Jia, Guohua Chen, Cong Wang, Jun Zhang, Zhizhong Jing
Ectromelia virus (ECTV) is the causative agent of mousepox, which has devastating effects in laboratory-mouse colonies and causes economic loss in biomedical research. More importantly, ECTV has been extensively used as an excellent model for studies of the pathogenesis and immunobiology of human smallpox. A rapid and sensitive SYBR Green I-based real-time PCR assay was developed and used for the detection and quantitation of orthopoxvirus by using ECTV in this study. Primers targeted to the highly conserved region of major core protein P4b gene of orthopoxvirus were designed and the standard plasmid was constructed...
December 7, 2017: Molecular and Cellular Probes
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