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https://www.readbyqxmd.com/read/29774213/a-rapid-growth-independent-antibiotic-resistance-detection-test-by-sybr-green-propidium-iodide-viability-assay
#1
Jie Feng, Rebecca Yee, Shuo Zhang, Lili Tian, Wanliang Shi, Wen-Hong Zhang, Ying Zhang
Antibiotic-resistant bacteria have caused huge concerns and demand innovative approaches for their prompt detection. Current antimicrobial susceptibility tests (AST) rely on the growth of the organisms which takes 1-2 days for fast-growing organisms and several weeks for slow growing organisms. Here, we show for the first time the utility of the SYBR Green I/propidium iodide (PI) viability assay for rapidly identifying antibiotic resistance in less than 30 min for major, antibiotic-resistant, fast-growing bacteria, such as Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae , and Acinetobacter baumannii for bactericidal and bacteriostatic agents and in 16 h for extremely rapid detection of drug resistance for isoniazid and pyrazinamide in slow-growing Mycobacterium tuberculosis ...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29773475/concordance-between-aspergillus-specific-precipitating-antibody-and-igg-in-allergic-bronchopulmonary-aspergillosis
#2
Kazuki Harada, Tsuyoshi Oguma, Akemi Saito, Yuma Fukutomi, Jun Tanaka, Katsuyoshi Tomomatsu, Masami Taniguchi, Koichiro Asano
BACKGROUND: Several serological tests for specific precipitin or IgG are available to demonstrate type III hypersensitivity reactions to Aspergillus species and are essential for infectious fungal disease diagnosis. These assays are also important for allergic bronchopulmonary aspergillosis (ABPA) diagnosis; however, their concordance in ABPA was not well studied. METHODS: Fifty-two ABPA patients diagnosed based on ISHAM criteria were enrolled. Precipitins and IgG specific to Aspergillusfumigatus, Aspergillusniger, Aspergillusflavus, or Aspergillusterreus were measured using Ouchterlony double immunodiffusion tests and ImmunoCAP method, respectively...
May 15, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29772418/differences-between-manual-and-automatic-analysis-in-determining-the-severity-of-obstructive-sleep-apnea-using-home-sleep-apnea-testing
#3
Gonzalo Labarca, Jorge Dreyse, Constanza Salas, Andrea Contreras, Gonzalo Nazar, Maria I Gaete, Jorge Jorquera
INTRODUCTION: Home sleep apnea testing (HSAT) is a diagnostic measure for obstructive sleep apnea hypopnea syndrome (OSAHS) in moderate/high risk patients. Some HSAT companies contain automatic analysis (AA). However, guidelines recommend manual analysis (MA) despite the weak evidence for this recommendation. OBJECTIVE: Evaluate the concordance between AA and MA of HSAT to make either a diagnosis and severity classification. METHODS: We evaluated AA and MA of HSAT between 2015 and 2016...
April 7, 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29770700/quality-use-of-the-pathology-data-in-home-medicines-reviews-a-retrospective-evaluation
#4
Vera H Buss, Alison Shield, Sam Kosari, Mark Naunton
BACKGROUND: Laboratory tests can be important tools for the assessment of pharmacotherapy. Nonetheless, there are no previous studies that have explicitly focused on the role of pathology data in Home Medicines Reviews (HMR), an Australian medication review program. OBJECTIVE: Evaluate pharmacists' recommendations regarding laboratory testing in the medication review process. METHODS: This retrospective review of HMRs assessed the prevalence of the pathology data provided by general practitioners...
May 1, 2018: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/29769832/validity-and-reliability-of-the-powertap-p1-pedals-power-meter
#5
Jesús G Pallarés, José Ramón Lillo-Bevia
To validate the new PowerTap P1® pedals power meter (PP1), thirty-three cyclists performed 12 randomized and counterbalanced graded exercise tests (100-500 W), at 70, 85 and 100 rev·min-1 cadences, in seated and standing positions. A scientific SRM system and a pair of PP1 pedals continuously recorded cadence and power output data. Significantly lower power output values were detected for the PP1 compared to the SRM for all workloads, cadences, and pedalling conditions (2-10 W, p < 0.05), except for the workloads ranged between 150 W to 350 W at 70 rev·min-1 in seated position (p > 0...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29767223/evaluation-of-renal-function-estimation-formulas-specific-to-dynamic-renal-function-for-drug-dosing-in-critically-ill-patients
#6
Lianjie Xiong, Z Kevin Lu, April Miller Quidley, Bebbyn S Alford, P Brandon Bookstaver
OBJECTIVES: The study compared estimated creatinine clearance (eCrCl) between the Cockcroft-Gault (CG) equation and the Jelliffe, Chiou, and Brater equations designed for estimation in dynamic renal function and resulting antimicrobial dosing concordance of five antimicrobials (cefepime, meropenem, piperacillin/tazobactam, vancomycin, and fluconazole) commonly used in the intensive care unit (ICU). METHODS: Electronic medical records were used to identify the target patient population...
May 2018: Southern Medical Journal
https://www.readbyqxmd.com/read/29766813/coreceptor-tropism-and-maraviroc-sensitivity-of-clonally-derived-ethiopian-hiv-1c-strains-using-an-in-house-phenotypic-assay-and-commonly-used-genotypic-methods
#7
Amare Worku Kalu, Nigus Fikrie Telele, Shambhu Aralaguppe, Solomon Gebre-Selassie, Daniel Fekade, Gaetano Marrone, Anders Sonnerborg
OBJECTIVES: Genotypic tropism testing (GTT) tools are generally developed based on HIV-1 subtype B (HIV-1B) and used for HIV-1C as well but with a large discordance of prediction between different methods. We used an established phenotypic assay for comparison with GTT methods and for determination of in vitro maraviroc sensitivity of pure R5-tropic and dual-tropic HIV-1C. METHODS: Plasma was obtained from 58 HIV-1C infected Ethiopians. Envgp120 was cloned into a luciferase tagged NL4-3 plasmid...
May 15, 2018: Current HIV Research
https://www.readbyqxmd.com/read/29766667/an-ssp-pcr-method-for-the-rapid-detection-of-disease-associated-alleles-hla-a-29-and-hla-b-51
#8
U Amstutz, D Schaerer, G Andrey, U Wirthmueller, C R Largiadèr
HLA-A*29 and HLA-B*51 are associated with birdshot uveitis and Behçet's disease, respectively, and are used as a diagnostic criterion in patients with suspected disease, requiring their detection in diagnostic laboratories. While commercial tests for individual HLA alleles are available for other disease-associated HLA variants, no similar allele-specific assays are available for HLA-A*29 and -B*51. Here, we report SSP-PCR methods for the detection of HLA-A*29 and -B*51 using a single PCR reaction per allele...
May 15, 2018: HLA
https://www.readbyqxmd.com/read/29765460/the-role-of-intestinal-microbiota-in-the-pathogenesis-of-nafld-starting-points-for-intervention
#9
Umberto Vespasiani-Gentilucci, Paolo Gallo, Antonio Picardi
In recent years, close links between intestinal microbiota and host metabolism have been recognized. Intestinal bacteria can participate in the extraction of calories from food, and circulation of bacterial products, in particular lipopolysaccharides (LPS), is responsible for the "metabolic endotoxemia", which contributes to insulin resistance and its complications, such as non-alcoholic fatty liver disease (NAFLD). Indeed, qualitative and quantitative intestinal dysbiotic changes have been clearly documented in NAFLD patients, and several mechanisms by which the intestinal microbiota can directly promote liver fat deposition, inflammation and fibrosis have also been described...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765286/reference-intervals-for-a-complete-blood-count-on-an-automated-haematology-analyser-sysmex-xn-in-healthy-adults-from-the-southern-metropolitan-area-of-barcelona
#10
Ariadna Arbiol-Roca, Claudia Elizabeth Imperiali, Magdalena Macià Montserrat, Ana Sancho Cerro, Anna Cortés Bosch de Basea, Lourdes Sánchez Navarro, Dolors Dot Bach, José Valero Politi
Background: The examination of peripheral blood is routinely used as a basic test in daily medical practice. Reliable reference intervals are necessary to avoid misdiagnoses, and the establishment of those intervals is an important task for clinical laboratories.The aim of the present study was to establish the reference intervals for complete blood count (CBC) on a Sysmex XN haematology analyser in healthy adults from the southern metropolitan area of Barcelona (Spain). Methods: A total of 213 apparently healthy adults who received a general health examination at Hospital Universitari de Bellvitge were recruited to this study...
April 2018: EJIFCC
https://www.readbyqxmd.com/read/29764589/-influence-of-different-therapies-on-egfr-mutants-by-circulating-cell-free-dna-of-lung-adenocarcinoma-and-prognosis
#11
Fei Su, Ke Zheng, Yiyun Fu, Qian Wu, Yuan Tang, Weiya Wang, Lili Jiang
BACKGROUND: Epidermal growth factor receptor (EGFR) gene mutation is closely related to the EGFR-TKI target treatment and prognosis of lung adenocarcinoma patients. The mutation status of EGFR is limited by tissue detection. The purpose of this study was to investigate the difference of EGFR mutants in plasmacirculating cell-free DNA (cfDNA) obtained from patients with non-small cell lung cancer (NSCLC) in three groups: pre-therapy, after traditional chemotherapy and targeted therapy...
May 20, 2018: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/29763469/rapid-diagnosis-of-bloodstream-infections-in-the-critically-ill-evaluation-of-the-broad-range-pcr-esi-ms-technology
#12
Martina Tassinari, Silvia Zannoli, Patrizia Farabegoli, Maria Federica Pedna, Anna Pierro, Antonio Mastroianni, Riccardo Fontan, Luciano Luongo, Giuseppe Sarnataro, Elisa Menegatti, Assunta Caruso, Vittorio Sambri
Bloodstream infection (BSI) and associated sepsis represent a major source of mortality in industrialized countries. Prompt treatment with targeted antibiotics affects both the financial impact and the clinical outcome of BSI: every hour gained in initiating the correct antimicrobial therapy significantly increases the probability of patient survival. However, the current standard-of-care, which depends on blood culture-based diagnosis, are often unable to provide such a fast response. Fast and sensitive molecular techniques for the detection of sepsis-related pathogens from primary blood samples are strongly needed...
2018: PloS One
https://www.readbyqxmd.com/read/29762871/fast-identification-of-dermatophytes-by-maldi-tof-ms-using-direct-transfer-of-fungal-cells-on-ground-steel-target-plates
#13
Keith C da Cunha, Arnaud Riat, Anne-Cecile Normand, Philipp P Bosshard, Margarete T G de Almeida, Renaud Piarroux, Jacques Schrenzel, Lionel Fontao
BACKGROUND: Dermatophytes cause human infections limited to keratinized tissues. We showed that the direct transfer method allows reliable identification of non-dermatophytes mould and yeast by MALDI-TOF/MS. OBJECTIVES: We aimed at assessing whether the direct transfer method can be used for dermatophytes and whether an own mass spectra library would be superior to the Bruker library. METHODS: We used the Bruker Biotyper to build a dermatophyte mass spectra library and assessed its performance by 1/ testing a panel of mass spectrum produced with strains genotypically identified and, 2/ comparing MALDI-TOF/MS identification to morphology-based methods...
May 15, 2018: Mycoses
https://www.readbyqxmd.com/read/29762385/hiv-sero-discordance-and-dual-contraceptive-method-use-among-hiv-infected-men-and-women-in-lilongwe-malawi
#14
Blessings Gausi, Maganizo B Chagomerana, Jennifer H Tang, Lisa B Haddad, Mina C Hosseinipour, Hannock Tweya, Sam Phiri
BACKGROUND: Some HIV sero-discordant couples are faced with the dual challenge of preventing HIV transmission to the uninfected partner and avoiding unintended pregnancy. Therefore, we hypothesized that sero-discordance is associated with dual method use at last sex. METHODS: We analyzed data from a cross-sectional survey of HIV-infected men and women attending 2 ART clinics in Lilongwe, Malawi. We used Fisher's exact test and Wilcoxon rank sum to assess for associations between sero-discordance, covariates, and dual method use...
May 14, 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29761633/verification-of-the-qlabs-international-normalized-ratio-point-of-care-device-for-monitoring-of-patients-attending-an-anticoagulation-clinic
#15
N Mbokota, E Schapkaitz, S Louw
INTRODUCTION: In the developing world, point-of-care (POC) testing for international normalized ratio (INR) plays an important role in the monitoring of patients on long-term warfarin therapy with limited access to healthcare ensuring safe and effective anticoagulation. A newly developed POC device for INR measurement by healthcare workers is the handheld qLabs POC device® (Micropoint Biotechnologies Incorporated, Guangdong, China). METHODS: The qLabs POC device® was evaluated in 262 patients attending an anticoagulation clinic with regards to accuracy and precision of the INR results...
May 14, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29760169/dysbiosis-of-maternal-and-neonatal-microbiota-associated-with-gestational-diabetes-mellitus
#16
Jinfeng Wang, Jiayong Zheng, Wenyu Shi, Nan Du, Xiaomin Xu, Yanming Zhang, Peifeng Ji, Fengyi Zhang, Zhen Jia, Yeping Wang, Zhi Zheng, Hongping Zhang, Fangqing Zhao
OBJECTIVE: The initial colonisation of the human microbiota and the impact of maternal health on neonatal microbiota at birth remain largely unknown. The aim of our study is to investigate the possible dysbiosis of maternal and neonatal microbiota associated with gestational diabetes mellitus (GDM) and to estimate the potential risks of the microbial shift to neonates. DESIGN: Pregnant women and neonates suffering from GDM were enrolled and 581 maternal (oral, intestinal and vaginal) and 248 neonatal (oral, pharyngeal, meconium and amniotic fluid) samples were collected...
May 14, 2018: Gut
https://www.readbyqxmd.com/read/29758173/lack-of-genotype-phenotype-correlation-in-families-who-had-brugada-syndrome-and-sudden-arrhythmic-death-syndrome-with-reported-pathogenic-scn1b-variants
#17
Belinda Gray, Can Hasdemir, Jodie Ingles, Takeshi Aiba, Naomasa Makita, Vincent Probst, Arthur A M Wilde, Ruth Newbury-Ecob, Mary N Sheppard, Christopher Semsarian, Raymond W Sy, Elijah R Behr
BACKGROUND: There is limited evidence that Brugada syndrome (BrS) is due to SCN1B variants (BrS5). This gene may be inappropriately included in routine genetic testing panels for BrS or sudden arrhythmic death syndrome (SADS). OBJECTIVE: We sought to characterize the genotype-phenotype correlation in families who had BrS and SADS with reportedly pathogenic SCN1B variants and to review their pathogenicity. METHODS: Families with BrS and SADS were assessed from 6 inherited arrhythmia centers worldwide, and a comprehensive literature review was performed...
May 3, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29757479/image-cytometry-dna-ploidy-analysis-correlation-between-two-semi-automated-methods
#18
Janaina Salomon Ghizoni, Marcelo Sperandio, Claire Lock, Edward W Odell
BACKGROUND AND OBJECTIVES: Quantitation of cell DNA content, DNA ploidy, has been established as a research and prognostic technique for decades. A variety of instruments have been used despite only a few commercially available systems having established quality assurance and published outcome data. The aim of this study was to compare two automated systems. METHODS: Nuclear monolayers were obtained from 112 oral biopsies by enzyme digestion and Feulgen staining...
May 14, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29756454/discordance-in-drug-resistance-mutations-between-blood-plasma-and-semen-or-rectal-secretion-among-newly-diagnosed-hiv-1-infected-thai-msm
#19
Akarin Hiransuthikul, Rapeeporn Wongkanya, Sunee Sirivichayakul, Deondara Trachunthong, Thanthip Sungsing, Tippawan Pankam, Praphan Phanuphak, Nittaya Phanuphak
HIV-1 infection is most commonly transmitted by sexual contact across mucosal surfaces. Information on concordance in drug resistance profile between blood plasma and anogenital compartments in resource-limited settings is limited. We aimed to determine discordances in genotypic drug resistance-associated mutations (DRAMs) between blood plasma and semen or rectal secretions among newly diagnosed, antiretroviral therapy (ART)-naïve, HIV-1-infected Thai men who have sex with men (MSM). Blood plasma, semen, and rectal secretions of HIV-1-infected Thai MSM enrolled from the Test and Treat cohort were tested for genotypic mutations in the reverse transcriptase and protease genes...
May 14, 2018: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/29756276/a-novel-diagnostic-algorithm-for-heparin-induced-thrombocytopenia
#20
G Zheng, M B Streiff, D Allison, C M Takemoto, K Salimian, P Morris, J Jani, R McCord, T S Kickler
INTRODUCTION: While diagnostic algorithm using PF4-heparin enzyme-linked immunosorbent assay (ELISA) optical density (OD), and heparin neutralization assay (HNA), or 4T score have been proposed to replace serotonin-release assay (SRA) for heparin-induced thrombocytopenia (HIT), their performance against SRA is unclear. In this study, we proposed and validated the performance of a new algorithm combining PF4-heparin ELISA optical density (OD), HNA and 4T score against SRA for HIT diagnosis...
May 13, 2018: International Journal of Laboratory Hematology
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