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Acinetobacter calcoaceticus

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https://www.readbyqxmd.com/read/29117917/antagonistic-endophytic-bacteria-associated-with-nodules-of-soybean-glycine-max-l-and-plant-growth-promoting-properties
#1
LongFei Zhao, YaJun Xu, XinHe Lai
A total of 276 endophytic bacteria were isolated from the root nodules of soybean (Glycine max L.) grown in 14 sites in Henan Province, China. The inhibitory activity of these bacteria against pathogenic fungus Phytophthora sojae 01 was screened in vitro. Six strains with more than 63% inhibitory activities were further characterized through optical epifluorescence microscopic observation, sequencing, and phylogenetic analysis of 16S rRNA gene, potential plant growth-promoting properties analysis, and plant inoculation assay...
October 13, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29076652/ability-of-phages-to-infect-acinetobacter-calcoaceticus-acinetobacter-baumannii-complex-species-through-acquisition-of-different-pectate-lyase-depolymerase-domains
#2
Hugo Oliveira, Ana Rita Costa, Nico Konstantinidis, Alice Ferreira, Ergun Akturk, Sanna Sillankorva, Alexandr Nemec, Mikhail Shneider, Andreas Dötsch, Joana Azeredo
Bacteriophages are ubiquitous in nature and represent a vast repository of genetic diversity, which is driven by the endless coevolution cycle with a diversified group of bacterial hosts. Studying phage-host interactions is important to gain novel insights into their dynamic adaptation. In this study, we isolated 12 phages infecting species of the Acinetobacter baumannii-Acinetobacter calcoaceticus complex which exhibited a narrow host range and similar morphological features (podoviruses with short tails of 9-12 nm and isometric heads of 50-60 nm)...
October 27, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29059620/analysis-of-potential-risks-from-the-bacterial-communities-associated-with-air-contact-surfaces-from-tilapia-oreochromis-niloticus-fish-farming
#3
Maria Jose Grande Burgos, Jose Luis Romero, Rubén Pérez Pulido, Antonio Cobo Molinos, Antonio Gálvez, Rosario Lucas
Tilapia farming is a promising growing sector in aquaculture. Yet, there are limited studies on microbiological risks associated to tilapia farms. The aim of the present study was to analyse the bacterial communities from solid surfaces in contact with air in a tilapia farm in order to evaluate the presence of bacteria potentially toxinogenic or pathogenic to humans or animals. Samples from a local tilapia farm (tank wall, aerator, water outlets, sink and floor) were analyzed by high throughput sequencing technology...
October 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/29049946/rechargeable-flexible-and-mediator-free-biosupercapacitor-based-on-transparent-ito-nanoparticle-modified-electrodes-acting-in-%C3%A2%C2%B5m-glucose-containing-buffers
#4
Tim Bobrowski, Elena González Arribas, Roland Ludwig, Miguel D Toscano, Sergey Shleev, Wolfgang Schuhmann
We present a transparent and flexible self-charging biosupercapacitor based on an optimised mediator- and membrane-free enzymatic glucose/oxygen biofuel cell. Indium tin oxide (ITO) nanoparticles were spray-coated on transparent conducting ITO supports resulting in a flocculent, porous and nanostructured electrode surface. By this, high capacitive currents caused by an increased electrochemical double layer as well as enhanced catalytic currents due to a higher number of immobilised enzyme molecules were obtained...
October 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28955072/carbapenemases-among-acinetobacter-species-isolated-from-nicu-of-a-tertairy-care-hospital-in-karachi
#5
Fakhuruddin Indhar, Muhammad Asif Durrani, Amir Bux, Muhammad Sohail
OBJECTIVE: To determine the carbapenemases in carbapenem-resistant Acinetobacter species. METHODS: This descriptive, cross-sectional study was carried out at the Jinnah Postgraduate Medical Centre, Karachi, from March to December 2014, and comprised Acinetobacter species isolated from the clinical specimen collected from hospitalised neonates. The screening for carbapenem resistance was performed by meropenem and imipenem discs, and minimum inhibitory concentrations...
October 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28953468/enhanced-biomass-production-of-duckweeds-by-inoculating-a-plant-growth-promoting-bacterium-acinetobacter-calcoaceticus-p23-in-sterile-medium-and-non-sterile-environmental-waters
#6
T Toyama, M Kuroda, Y Ogata, Y Hachiya, A Quach, K Tokura, Y Tanaka, K Mori, M Morikawa, M Ike
Duckweed offers the promise of a co-benefit culture combining water purification with biomass production. Acinetobacter calcoaceticus P23 is a plant growth-promoting bacterium isolated from a duckweed, Lemna aequinoctialis. This study quantified its growth-promoting effect on three duckweeds (L. aoukikusa, L. minor, and Spirodela polyrhiza) in sterile Hoagland solution and evaluated its usefulness in duckweed culture under non-sterile conditions. P23 promoted growth of three duckweeds in sterile Hoagland solution at low to high nutrient concentrations (1...
September 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28893978/gut-bacteria-from-multiple-sclerosis-patients-modulate-human-t-cells-and-exacerbate-symptoms-in-mouse-models
#7
Egle Cekanaviciute, Bryan B Yoo, Tessel F Runia, Justine W Debelius, Sneha Singh, Charlotte A Nelson, Rachel Kanner, Yadira Bencosme, Yun Kyung Lee, Stephen L Hauser, Elizabeth Crabtree-Hartman, Ilana Katz Sand, Mar Gacias, Yunjiao Zhu, Patrizia Casaccia, Bruce A C Cree, Rob Knight, Sarkis K Mazmanian, Sergio E Baranzini
The gut microbiota regulates T cell functions throughout the body. We hypothesized that intestinal bacteria impact the pathogenesis of multiple sclerosis (MS), an autoimmune disorder of the CNS and thus analyzed the microbiomes of 71 MS patients not undergoing treatment and 71 healthy controls. Although no major shifts in microbial community structure were found, we identified specific bacterial taxa that were significantly associated with MS. Akkermansia muciniphila and Acinetobacter calcoaceticus, both increased in MS patients, induced proinflammatory responses in human peripheral blood mononuclear cells and in monocolonized mice...
October 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28789688/an-in-vitro-synthetic-biosystem-based-on-acetate-for-production-of-phloroglucinol
#8
Rubing Zhang, Wei Liu, Yujin Cao, Xin Xu, Mo Xian, Huizhou Liu
BACKGROUND: Phloroglucinol is an important chemical, and the biosynthesis processes which can convert glucose to phloroglucinol have been established. However, due to approximate 80% of the glucose being transformed into undesirable by-products and biomass, this biosynthesis process only shows a low yield with the highest value of about 0.20 g/g. The industrial applications are usually hindered by the low current productivity and yield and also by the high costs. Generally, several different aspects limit the development of phloroglucinol biosynthesis...
August 8, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28774994/erratum-for-ho-et-al-complete-genome-sequence-of-acinetobacter-calcoaceticus-ca16-a-bacterium-capable-of-degrading-diesel-and-lignin
#9
Margaret T Ho, Brian Weselowski, Ze-Chun Yuan
No abstract text is available yet for this article.
August 3, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28723202/structure-guided-design-of-protein-biosensors-for-phenolic-pollutants
#10
Shamayeeta Ray, Santosh Panjikar, Ruchi Anand
Phenolic aromatic compounds are a major source of environmental pollution. Currently there are no in situ methods for specifically and selectively detecting these pollutants. Here, we exploit the nature's biosensory machinery by employing Acinetobacter calcoaceticus NCIB8250 protein, MopR, as a model system to develop biosensors for selective detection of a spectrum of these pollutants. The X-ray structure of the sensor domain of MopR was used as a scaffold for logic-based tunable biosensor design. By employing a combination of in silico structure guided approaches, mutagenesis and isothermal calorimetric studies, we were able to generate biosensor templates, that can selectively and specifically sense harmful compounds like chlorophenols, cresols, catechol, and xylenols...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28692823/high-hiv-infection-prevalence-in-a-group-of-men-who-have-sex-with-men
#11
Raquel Maria Cardoso Torres, Marly Marques da Cruz, André Reynaldo Santos Périssé, Denise Ribeiro Franqueira Pires
Brazil is characterized by a concentrated AIDS epidemic, it has a prevalence of less than 1% in the general population. However, there are higher rates in specific populations, especially in men who have sex with men. The study's aim was to analyze the association between sociodemographic characteristics, sexual practices, sexual behaviors and the HIV infection in a group of men who have sex with men. Secondary data was collected between June 2014 and September 2015 in a research of cross-sectional design in the city of Rio de Janeiro, Brazil...
July 8, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28683724/first-report-of-cavitary-pneumonia-due-to-community-acquired-acinetobacter-pittii-study-of-virulence-and-overview-of-pathogenesis-and-treatment
#12
Romaric Larcher, Alix Pantel, Erik Arnaud, Albert Sotto, Jean-Philippe Lavigne
BACKGROUND: Acinetobacter pittii is a nosocomial pathogen rarely involved in community-acquired infections. We report for the first time that A. pittii can be responsible for cavitary community-acquired pneumonia and study its virulence, and discuss its pathogenesis and treatment options. CASE PRESENTATION: A 45-year-old woman with a history of smoking and systemic lupus was admitted to Nimes University Hospital (France) with coughing and sputum lasting for three weeks...
July 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28619790/complete-genome-sequence-of-acinetobacter-calcoaceticus-ca16-a-bacterium-capable-of-degrading-diesel-and-lignin
#13
Margaret T Ho, Brian Weselowski, Ze-Chun Yuan
We report here the complete assembled genome sequence of Acinetobacter calcoaceticus CA16, which is capable of utilizing diesel and lignin as a sole carbon source. CA16 contains a 4,110,074-bp chromosome and a 5,920-bp plasmid. The assembled sequences will help elucidate potential metabolic pathways and mechanisms responsible for CA16's hydrocarbon degradation ability.
June 15, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28598213/characterization-and-degradation-potential-of-diesel-degrading-bacterial-strains-for-application-in-bioremediation
#14
María Balseiro-Romero, Panagiotis Gkorezis, Petra S Kidd, Jonathan Van Hamme, Nele Weyens, Carmen Monterroso, Jaco Vangronsveld
Bioremediation of polluted soils is a promising technique with low environmental impact, which uses soil organisms to degrade soil contaminants. In this study, 19 bacterial strains isolated from a diesel-contaminated soil were screened for diesel-degrading potential, biosurfactant production, and biofilm formation abilities, all desirable characteristics when selecting strains for re-inoculation into hydrocarbon-contaminated soils. Diesel degradation rates were determined in vitro in minimal medium with diesel as the sole carbon source...
June 9, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28594944/development-and-evaluation-of-a-core-genome-multilocus-typing-scheme-for-whole-genome-sequence-based-typing-of-acinetobacter-baumannii
#15
Paul G Higgins, Karola Prior, Dag Harmsen, Harald Seifert
We have employed whole genome sequencing to define and evaluate a core genome multilocus sequence typing (cgMLST) scheme for Acinetobacter baumannii. To define a core genome we downloaded a total of 1,573 putative A. baumannii genomes from NCBI as well as representative isolates belonging to the eight previously described international A. baumannii clonal lineages. The core genome was then employed against a total of fifty-three carbapenem-resistant A. baumannii isolates that were previously typed by PFGE and linked to hospital outbreaks in eight German cities...
2017: PloS One
https://www.readbyqxmd.com/read/28578555/infections-due-to-acinetobacter-baumannii-in-the-icu-treatment-options
#16
Joseph P Lynch, George G Zhanel, Nina M Clark
Bacteria within the genus Acinetobacter (principally A. baumannii-calcoaceticus complex [ABC]) are gram-negative coccobacilli that may cause nosocomial infections in critically ill or debilitated patients (particularly ventilator-associated pneumonia and infections of the bloodstream, urinary tract, and wounds). Treatment of Acinetobacter infections is difficult, as Acinetobacter spp. are intrinsically resistant to multiple antimicrobial agents, and have a remarkable ability to acquire new resistance determinants via mechanisms that include plasmids, transposons, integrons, and resistance islands...
June 2017: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28562751/carbapenem-resistant-acinetobacter-baumannii-contamination-in-an-intensive-care-unit
#17
COMPARATIVE STUDY
Otávio Hallal Ferreira Raro, Stephanie Wagner Gallo, Carlos Alexandre Sanchez Ferreira, Sílvia Dias de Oliveira
INTRODUCTION: Acinetobacter baumannii is a major pathogen causing infections in intensive care units (ICUs). In this study, we aimed to evaluate the presence of A. baumannii in an ICU environment and gloves from ICU workers and to characterize the antimicrobial resistance of the isolates in comparison with those isolated from ICU patients at the same hospital. METHODS: ICU samples were collected from March to November 2010. Isolates biochemically characterized as Acinetobacter calcoaceticus-Acinetobacter baumannii complex were evaluated by PCR targeting the 16S rDNA and bla OXA-51 genes...
March 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28533186/delayed-identification-of-acinetobacter-baumannii-during-an-outbreak-owing-to-disrupted-blaoxa-51-like-by-isaba19
#18
Amjad Ahmadi, Himen Salimizand
Early detection of Acinetobacter baumannii, an emerging pathogen in hospital settings, is of interest. The blaOXA-51-like family had been used as a marker to detect A. baumannii. During an infection outbreak, 14 isolates produced a 1.7-kb PCR band instead of 353 bp for this marker. This work sought the reasons behind the increased marker size. Characterisation of isolates was done by API-20NE, gyrB multiplex PCR and 16S-23S rRNA ITS sequencing. The 1.7-kb band generated and the complete blaOXA-51-like variant were sequenced to find the probable integrated element...
May 19, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28435019/epidemiology-and-trends-in-the-antibiotic-susceptibilities-of-gram-negative-bacilli-isolated-from-patients-with-intra-abdominal-infections-in-the-asia-pacific-region-2010-2013
#19
Ya-Ting Chang, Geoffrey Coombs, Thomas Ling, V Balaji, Camilla Rodrigues, Hiroshige Mikamo, Min-Ja Kim, Datin Ganeswrie Rajasekaram, Myrna Mendoza, Thean Yen Tan, Pattarachai Kiratisin, Yuxing Ni, Weinman Barry, Yingchun Xu, Yen-Hsu Chen, Po-Ren Hsueh
This study was conducted to investigate the epidemiology and antimicrobial susceptibility patterns of Gram-negative bacilli (GNB) isolated from intra-abdominal infections (IAIs) in the Asia-Pacific region (APR) from 2010-2013. A total of 17 350 isolates were collected from 54 centres in 13 countries in the APR. The three most commonly isolated GNB were Escherichia coli (46.1%), Klebsiella pneumoniae (19.3%) and Pseudomonas aeruginosa (9.8%). Overall, the rates of extended-spectrum β-lactamase (ESBL)-producing E...
June 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28336599/complete-genome-sequence-and-methylome-analysis-of-acinetobacter-calcoaceticus-65
#20
Alexey Fomenkov, Tamas Vincze, Sergey K Degtyarev, Richard J Roberts
Acinetobacter calcoaceticus 65 is the original source strain for the restriction enzyme Acc65I. Its complete sequence and full methylome were determined using single-molecule real-time (SMRT) sequencing.
March 23, 2017: Genome Announcements
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