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https://www.readbyqxmd.com/read/29118168/use-of-accelerate-pheno%C3%A2-system-for-identification-and-antimicrobial-susceptibility-testing-id-ast-of-pathogens-in-positive-blood-cultures-and-impact-on-time-to-results-and-workflow
#1
Angella Charnot-Katsikas, Vera Tesic, Nedra Love, Brandy Hill, Cindy Bethel, Sue Boonlayangoor, Kathleen G Beavis
The Accelerate Pheno™ system uses automated fluorescence in situ hybridization technology with morphokinetic cellular analysis to provide rapid species identification (ID) and antimicrobial susceptibility testing (AST) results for the most commonly identified organisms in bloodstream infections.Objective was to evaluate the accuracy and workflow of bacterial and yeast ID, and bacterial AST using the Accelerate Pheno™ system in the clinical microbiology laboratory.Consecutive fresh blood cultures received in the laboratory were analyzed by the Accelerate Pheno™ system within 0 - 8 h of growth detection...
November 8, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29101199/antifungal-hsaf-biosynthesis-in-lysobacter-enzymogenes-is-controlled-by-the-interplay-of-two-transcription-factors-and-a-diffusible-molecule
#2
Zhenhe Su, Sen Han, Zhengqing Fu, Guoliang Qian, Fengquan Liu
Lysobacter enzymogenes is a Gram-negative, environmental ubiquitous bacterium that produces a secondary metabolite, called HSAF (Heat-stable antifungal factor), as an antifungal factor against plant and animal fungal pathogens. 4-hydroxybenzoic acid (4-HBA) is a newly identified diffusible factor that regulates HSAF synthesis via LysRLe, a LysR-type transcription factor (TF). Here, to identify additional TFs within the 4-HBA regulatory pathway that control HSAF production, we re-analyzed the LenB2-based transcriptomic data, in which LenB2 is the enzyme responsible for 4-HBA production...
November 3, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29074195/presence-of-enteric-viruses-bioaccumulation-and-stability-in-anomalocardia-brasiliana-clams-gmelin-1791
#3
Doris Sobral Marques Souza, Ana Ferreira Ávila Dominot, Vanessa Moresco, Célia Regina Monte Barardi
Bivalve mollusks are filter feeders and may accumulate human pathogens in their tissues. Many studies demonstrated human diseases associated with bivalve consumption, especially oysters. Anomalocardia brasiliana clams are distributed along the Brazilian coastal area and are an exotic ingredient for some typical dishes in Brazil. Even though there are several reports describing the contamination of oysters and mussels with human pathogens, there is a lack of studies reporting contamination of A. brasiliana with human pathogens...
August 12, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29053343/efficiency-of-opuntia-ficus-in-the-phytoremediation-of-a-soil-contaminated-with-used-motor-oil-and-lead-compared-to-that-of-lolium-perenne-and-aloe-barbadendis
#4
Luisa F Escobar-Alvarado, Mabel Vaca-Mier, Raymundo López-Callejas, Ma Neftalí Rojas-Valencia
Industrial pollutants such as heavy metals and hydrocarbons in soils represent a serious concern due to their persistence and negative effects on the environment, affecting cellular processes in living organisms and even causing mutations and cancer. The main objectives of this work were to evaluate the efficiency of Opuntia ficus in the phytoremediation of a soil polluted with used motor oil. Two other species, one with different and one with similar characteristics, relatively, were used for comparison purposes: Lolium perenne and Aloe barbadensis...
October 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29043909/british-journal-of-biomedical-science-in-2017-what-have-we-learned
#5
Andrew Blann
In 2017 the British Journal of Biomedical Science published 35 articles in the various disciplines that comprise biomedical science. These were 6 reviews, 22 original articles, 6 'In Brief' short reports and one guideline. Of these, the majority were in clinical chemistry (one review, six data papers), microbiology (one review, four data papers), cellular pathology (four data papers) and virology (one review, two data papers). There were two data papers in transfusion science, whilst haematology, cytopathology and immunology were each represented by one review and one data paper...
October 18, 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/29032838/next-generation-of-microbiological-risk-assessment-potential-of-omics-data-for-exposure-assessment
#6
Heidy M W den Besten, Alejandro Amézquita, Sara Bover-Cid, Stéphane Dagnas, Mariem Ellouze, Sandrine Guillou, George Nychas, Cian O'Mahony, Fernando Pérez-Rodriguez, Jeanne-Marie Membré
In food safety and public health risk evaluations, microbiological exposure assessment plays a central role as it provides an estimation of both the likelihood and the level of the microbial hazard in a specified consumer portion of food and takes microbial behaviour into account. While until now mostly phenotypic data have been used in exposure assessment, mechanistic cellular information, obtained using omics techniques, will enable the fine tuning of exposure assessments to move towards the next generation of microbiological risk assessment...
October 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29029257/beyond-the-bulk-disclosing-the-life-of-single-microbial-cells
#7
Katrin Rosenthal, Verena Oehling, Christian Dusny, Andreas Schmid
Microbial single cell analysis has led to discoveries that are beyond what can be resolved with population-based studies. It provides a pristine view of the mechanisms that organize cellular physiology, unbiased by population heterogeneity or uncontrollable environmental impacts. A holistic description of cellular functions at the single cell level requires analytical concepts beyond the miniaturization of existing technologies, defined but uncontrolled by the biological system itself. This review provides an overview of the latest advances in single cell technologies and demonstrates their potential...
November 1, 2017: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/29027017/palladium-bionanoparticles-production-from-acidic-pd-ii-solutions-and-spent-catalyst-leachate-using-acidophilic-fe-iii-reducing-bacteria
#8
Naoko Okibe, Daisuke Nakayama, Takahiro Matsumoto
The acidophilic, Fe(III)-reducing heterotrophic bacteria Acidocella aromatica PFBC(T) and Acidiphilium cryptum SJH were utilized to produce palladium (Pd) bionanoparticles via a simple 1-step microbiological reaction. Monosaccharide (or intracellular NADH)-dependent reactions lead to visualization of intra/extra-cellular enzymatic Pd(0) nucleation. Formic acid-dependent reactions proceeded via the first slow Pd(0) nucleation phase and the following autocatalytic Pd(II) reduction phase regardless of the presence or viability of the cells...
November 2017: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/28994506/inflammatory-cells-in-liquid-based-cytology-smears-classified-as-bacterial-vaginosis
#9
José Eleutério, Renata Mírian Nunes Eleutério, Leonardo Arruda Martins, Paulo César Giraldo, Ana Katherine Silveira Gonçalves
BACKGROUND: Bacterial vaginosis (BV) remains an enigmatic question. The term "osis" instead of "itis" is used because commonly, there are no inflammatory process associated with BV. However, leukocytes are often observed in it. METHODS: In a transversal study, we evaluated 1178 cases with diagnosis of BV by liquid-based cytology (more than 20% of clue cells), attended in general gynecologic private clinic. Depending of the presence of more than five leukocytes on average per field in immersion objective (1000×), the cases were divided in two groups: few or no leukocytes (< 5 leukocytes per field) (BV) and with leukocytes (≥ 5 leukocytes per field) (BV-L)...
October 10, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28959246/recent-perspectives-on-genome-transmission-clinical-manifestation-diagnosis-therapeutic-strategies-vaccine-developments-and-challenges-of-zika-virus-research
#10
REVIEW
Apoorva Shankar, Amulya A Patil, Sinosh Skariyachan
One of the potential threats to public health microbiology in 21st century is the increased mortality rate caused by Zika virus (ZIKV), a mosquito-borne flavivirus. The severity of ZIKV infection urged World Health Organization (WHO) to declare this virus as a global concern. The limited knowledge on the structure, virulent factors, and replication mechanism of the virus posed as hindrance for vaccine development. Several vector and non-vector-borne mode of transmission are observed for spreading the disease...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28950931/corynebacterium-gottingense-sp-nov-isolated-from-a-clinical-patient
#11
Ewelina Atasayar, Ortrud Zimmermann, Cathrin Spröer, Peter Schumann, Uwe Groß
A Gram-positive bacterial strain, 99221/2016(T), was isolated from blood of a patient with bacteraemia at the Institute of Medical Microbiology, Göttingen, Germany. The strain was rod-shaped with a palisade arrangement of cells, non-spore-forming, non-lipophilic, catalase-positive and oxidase-negative. It grew well at 37 °C on Columbia blood agar and showed good growth under aerobic, microaerophilic and anaerobic conditions. The colonies were white-cream, circular and convex with a shiny, smooth surface...
September 27, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28934331/direct-identification-of-microorganisms-from-thioglycolate-broth-by-maldi-tof-ms
#12
Jorge Arca-Suárez, Fátima Galán-Sánchez, Pilar Marin-Casanova, Manuel A Rodríguez-Iglesias
We developed an easy MALDI-TOF MS-based assay to identify microorganisms directly from thioglycolate broth. A total of 101 positive thioglycolate broths inoculated with 15 different kinds of samples were evaluated. In 91 samples (90.1%), direct MALDI-TOF MS identifications were the same as those obtained after conventional laboratory procedures including subcultures. In 10 samples misidentified by direct processing, yeasts or mixed cultures grew in the thioglycolate subcultures, or high cellular debris hampered a correct analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28901846/applications-of-nanoflowers-in-biomedicine
#13
Hossein Heli, Masoud Negahdary
BACKGROUND: Nanotechnology has opened new windows for biomedical researches and treatment of diseases. Nanostructures with flower-like shapes (nanoflowers) which have exclusive morphology and properties have been interesting for many researchers. METHODS: In this review, various applications of nanoflowers in biomedical researches and patents from various aspects have been investigated and reviewed. RESULTS: Nanoflowers attracted serious attentions in whole of biomedical fields such as cardiovascular diseases, microbiology, sensors and biosensors, biochemical and cellular studies, cancer therapy, healthcare and etc...
September 11, 2017: Recent Patents on Nanotechnology
https://www.readbyqxmd.com/read/28891798/-effect-of-the-cellular-and-humoral-immune-response-in-infertile-couples-and-its-relationship-with-infections
#14
Adriana Brufman, Laura Colombo, Esteban Streiger, Rocío Pusillico
OBJECTIVE: The purpose of this study was to determine the prevalence of different microorganisms isolated from the urogenital tract of infertile men and assess whether there are differences in semen parameters according to the presence or absence of genital infections. METHODS: 280 semen samples from infertile men were studied retrospectively. Semen parameters were analyzed according to the World Health Organization criteria (WHO 2010). Microbiological analysis was performed using the modified method of Stamey and Meares proposed by Santoianni et al...
September 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28880030/quantitative-detection-of-isotopically-enriched-e-coli-cells-by-sers
#15
Malama Chisanga, Howbeer Muhamadali, Richard Kimber, Royston Goodacre
It is clear that investigating how bacterial cells work by analysing their functional roles in microbial communities is very important in environmental, clinical and industrial microbiology. The benefits of linking genes to their respective functions include the reliable identification of the causative agents of various diseases, which would permit appropriate and timely treatment in healthcare systems. In industrial and municipal wastewater treatment and management, such knowledge may allow for the manipulation of microbial communities, such as through bioaugmentation, in order to improve the efficiency and effectiveness of bioremediation processes...
September 7, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28838077/the-unique-microbiology-and-molecular-pathogenesis-of-mycoplasma-genitalium
#16
REVIEW
Chris L McGowin, Patricia A Totten
Mycoplasma genitalium is increasingly appreciated as a common cause of sexually transmitted disease syndromes, including urethritis in men and cervicitis, endometritis, pelvic inflammatory disease, and possibly preterm birth, tubal factor infertility, and ectopic pregnancy in women. Despite these disease associations, which parallel those of Chlamydia trachomatis and Neisseria gonorrhoeae, the mechanisms by which this pathogen elicits inflammation, causes cellular damage, and persists in its only natural host (humans) are unique and are not fully understood...
July 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28830349/prediction-of-bacterial-small-rnas-in-the-rsma-csra-and-toxt-pathways-a-machine-learning-approach
#17
Carl Tony Fakhry, Prajna Kulkarni, Ping Chen, Rahul Kulkarni, Kourosh Zarringhalam
BACKGROUND: Small RNAs (sRNAs) constitute an important class of post-transcriptional regulators that control critical cellular processes in bacteria. Recent research using high-throughput transcriptomic approaches has led to a dramatic increase in the discovery of bacterial sRNAs. However, it is generally believed that the currently identified sRNAs constitute a limited subset of the bacterial sRNA repertoire. In several cases, sRNAs belonging to a specific class are already known and the challenge is to identify additional sRNAs belonging to the same class...
August 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28763076/-study-plan-2016-of-the-licentiate-of-medical-surgery-of-the-faculty-of-higher-studies-iztacala
#18
Adolfo René Méndez-Cruz, Xavier de Jesús Novales-Castro, Lilia Isabel Ramírez-García, Eugenio Camarena-Ocampo, Julia Reyes-Reali, Uriel Calderón-Abundes, Dante Amato
The 2016 undergraduate medical degree curriculum at the Facultad de Estudios Superiores Iztacala of the Universidad Nacional Autónoma de México (UNAM) is presented. It is the result of a long institutional reflection and academic dialog process of approximately three years, which culminated in its approval by UNAM's Academic Council for the Biology, Chemistry, and Health Sciences areas on January 25, 2016. Its most relevant characteristics are: modular organization, four knowledge areas (biomedical, methodological, socio-psychological, and humanistic and medical practice), and new modules such as Seminar of socio-psycho-biological integration; Genetics and molecular biology; Biochemistry and cellular biology; Pharmacological basis of therapeutics; Infectious diseases, microbiology and parasitology; Medical ethics; Public health; and Evidence-based medicine - clinical epidemiology...
May 2017: Gaceta Médica de México
https://www.readbyqxmd.com/read/28740247/inactivation-mechanism-of-escherichia-coli-induced-by-slightly-acidic-electrolyzed-water
#19
Zhangying Ye, Shuo Wang, Tao Chen, Weishan Gao, Songming Zhu, Jinsong He, Zhiying Han
Foodborne disease outbreak caused by food microbiological contamination is a serious public health problem. Slightly acidic electrolyzed water (SAEW), a new ultra-high effect and wide-spectrum disinfectant that is colourless, odourless, and harmless to humans and the environment, is directly used on food surfaces in Japan and America. However, the underlying inactivation mechanism remains unknown. In this study, biochemical and cellular changes were observed to investigate the bactericidal mechanism of SAEW against Escherichia coli (E...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28726375/nanoscale-hydrodynamic-film-for-diffusive-mass-transport-control-in-compartmentalized-microfluidic-chambers
#20
Minseok Kim, Ji Won Lim, Sung Kuk Lee, Taesung Kim
A compartmentalized microfluidic chamber array that offers not only separate cell culture environments but also independent control of the diffusion of small molecules provides an extremely useful platform for cell cultivations and versatile cellular assays. However, it is challenging to incorporate both cell compartmentalization and active diffusion control in real-time and precise manners. Here, we present a novel nanoscale hydrodynamic film (NHF) that is formed between a solid substrate and a polydimethylsiloxane (PDMS) surface...
August 9, 2017: Analytical Chemistry
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