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Ya-Chi Li, Hui-Ling Lin, Fang-Chun Liao, Sing-Siang Wang, Hsiu-Chu Chang, Hung-Fu Hsu, Sue-Hsien Chen, Gwo-Hwa Wan
BACKGROUND: Few studies have investigated the difference in bacterial contamination between conventional reused ventilator systems and disposable closed ventilator-suction systems. The aim of this study was to investigate the bacterial contamination rates of the reused and disposable ventilator systems, and the association between system disconnection and bacterial contamination of ventilator systems. METHODS: The enrolled intubated and mechanically ventilated patients used a conventional reused ventilator system and a disposable closed ventilator-suction system, respectively, for a week; specimens were then collected from the ventilator circuit systems to evaluate human and environmental bacterial contamination...
2018: PloS One
Jialiang Xu, Huijun Wu, Zhiwei Wang, Fuping Zheng, Xin Lu, Zhenpeng Li, Qing Ren
Chinese rice wine (CRW) is the oldest kind of wine in China and is mainly fermented by wheat Qu and yeast with rice, millet, etc. This gives CRW a unique quality, but the flavor components are complex. Its formation is related to microorganisms, but the link between CRW and microorganisms is poorly understood. Here, we used two kinds of sorghum (JZ22 and JB3, of which JZ22 has a higher tannin content) as the raw materials to brew and determined the structural and functional dynamics of the microbiota by metagenomics and flavor analyses...
March 15, 2018: Scientific Reports
Christoph Klinger, Berrett Dengler, Thomas Bauer, Ralf S Mueller
A 4-year-old ball python was presented 3 weeks after multiple bite wounds from a prey rat with large skin lesions, a concurrent deep bacterial pyoderma and clinical signs for septicemia, including neurolo -gical symptoms. Affected tissue separated from the underlying muscular layer revealing parts of the muscles. Clinical examination and cyto -logy was consistent with bacterial pyoderma; septicemia was an additional tentative clinical diagnosis. Empirical lincomycin and marbo -floxacin (bacterial culture revealed a multi-resistant Stenotrophomonas maltophilia susceptible to fluoroquinolones) treatment improved the patient's general condition but skin wounds deteriorated to multifocal eschars with intracellular rods...
February 2018: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
Diego Javier Jiménez, Maryam Chaib De Mares, Joana Falcão Salles
Plant biomass (PB) is an important source of sugars useful for biofuel production, whose degradation efficiency depends on synergistic and dynamic interactions of different enzymes. Here, using a metatranscriptomics-based approach, we explored the expression of PB-degrading enzymes in a five-species synthetic bacterial consortium during cultivation on sugarcane bagasse as a unique carbon source. By analyzing the temporal expression dynamics of a selection of enzymes we revealed the functional role of each consortium member and disentangled the potential interactions between them...
2018: Frontiers in Microbiology
Agnieszka Chmielarczyk, Monika Pobiega, Grzegorz Ziółkowski, Monika Pomorska-Wesołowska, Dorota Romaniszyn, Lech Krawczyk, Jadwiga Wójkowska-Mach
BACKGROUND: The impact of multidrug-resistant organisms (MDROs), including non-fermentative bacilli (NFBs), is rising and underestimated, especially in intensive care units (ICUs). The growing prevalence of multidrug resistance (MDR) and extensive drug resistance (XDR) is challenging for clinicians, as the treatment options are limited. OBJECTIVES: The purpose of this study was to analyze the extent of the epidemiological problem of multidrugresistant, extensively drug-resistant and pandrug-resistant (PDR) non-fermentative bacilli isolated from pneumonia and bloodstream infections (BSIs) in patients hospitalized in southern Poland...
March 13, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Ganyu Gu, Andrea Ottesen, Samantha Bolten, Padmini Ramachandran, Elizabeth Reed, Steve Rideout, Yaguang Luo, Jitendra Patel, Eric Brown, Xiangwu Nou
Fresh produce, like spinach, harbors diverse bacterial populations, including spoilage and potentially pathogenic bacteria. This study examined the effects of produce washing in chlorinated water and subsequent storage on the microbiota of spinach. Baby spinach leaves from a commercial fresh-cut produce processor were assessed before and after washing in chlorinated water, and then after one week's storage at 4, 10, and 15 °C. Microbial communities on spinach were analyzed by non-selective plating, qPCR, and 16S rDNA amplicon sequencing...
August 2018: Food Microbiology
Huanhuan Zhao, Chui-Hua Kong
The elimination of pyraclostrobin by simultaneous microbial degradation and Fenton oxidation was achieved in a microbial fuel cell (MFC) system. After 12 h of incubation, the removal rate of pyraclostrobin was 1.4 mg/L/h at the anode and 1.7 mg/L/h at the cathode. The pyraclostrobin concentration was less than the detection limit (0.1 mg/L) after 72 h at the anode and 24 h at the cathode. The air flow rate, temperature, and pH of the catholyte had significant effects on the generation of H2 O2 ...
March 3, 2018: Bioresource Technology
Barbara Giordani, Annalisa Amato, Fabio Majo, Gianluca Ferrari, Serena Quattrucci, Laura Minicucci, Rita Padoan, Giovanna Floridia, Gianna Puppo Fornaro, Domenica Taruscio, Marco Salvatore
INTRODUCTION: The Italian Cystic Fibrosis Registry (ICFR) is based on a new agreement about the data flow towards the Registry signed on October, 4th 2016 by the Centre for Rare Diseases of the Italian National Institute of Health (NIH), the clinicians of the Italian National Referral and Support Centres for Cystic Fibrosis, the Paediatric Hospital "Bambino Gesù" (Rome), the Italian Cystic Fibrosis Society, and the Italian League for Cystic Fibrosis. OBJECTIVES: The aim of the present Report is to improve the knowledge on cystic fibrosis (CF) through the epidemiological description of Italian patients...
January 2018: Epidemiologia e Prevenzione
Rupa Iyer, Brian Iken, Ashish Damania, Jerry Krieger
Six organophosphate-degrading bacterial strains collected from farm and ranch soil rhizospheres across the Houston-metropolitan area were identified as strains of Pseudomonas putida (CBF10-2), Pseudomonas stutzeri (ODKF13), Ochrobactrum anthropi (FRAF13), Stenotrophomonas maltophilia (CBF10-1), Achromobacter xylosoxidans (ADAF13), and Rhizobium radiobacter (GHKF11). Whole genome sequencing data was assessed for relevant genes, proteins, and pathways involved in the breakdown of agrochemicals. For comparative purposes, this analysis was expanded to also include data from deposited strains in the National Center for Biotechnology Information's (NCBI) database...
March 3, 2018: Environmental Science and Pollution Research International
Danielle L Peters, Jonathan J Dennis
Stenotrophomonas maltophilia bacteriophage DLP5 is a temperate phage with Siphoviridae family morphotype. DLP5 (vB_SmaS_DLP_5) is the first S. maltophilia phage shown to exist as a phagemid. The DLP5 genome is 96,542 bp, encoding 149 open reading frames (ORFs), including four tRNAs. Genomic characterization reveals moron genes potentially involved in host cell membrane modification.
March 1, 2018: Genome Announcements
Lingui Xue, Hai Shang, Ping Ma, Xia Wang, Xiaoyan He, Junbo Niu, Juanli Wu
The aim was to study the effect of artificially constructed consortia of microalgae-bacterial symbionts on growth and lipid production by Chlorella vulgaris (C. vulgaris), as well as the inter-relationship between microalgae and bacterial in a photoautotrophic system. The results showed that compared to an axenic culture of C. vulgaris, H1 co-culture system (axenic C. vulgaris-Stenotrophomona smaltophilia) had the strongest effect on the C. vulgaris growth. The biomass, specific growth rate and maximum productivity of C...
February 28, 2018: Journal of Basic Microbiology
Aurélie Jayol, Camille Corlouer, Marisa Haenni, Mélanie Darty, Karine Maillard, Marine Desroches, Brigitte Lamy, Estelle Jumas-Bilak, Jean-Yves Madec, Jean-Winoc Decousser
Stenotrophomonas maltophilia (Sm) is an archetypal environmental opportunistic bacterium responsible for health care-associated infections. The role of animals in human Sm infections is unknown. This study aims to reveal the genetic and phylogenetic relationships between pathogenic strains of Sm, both animal and human, and identify a putative role for animals as a reservoir in human infection. We phenotypically and genotypically characterized 61 Sm strains responsible for animal infections (mainly respiratory tract infections in horses) from a French nationwide veterinary laboratory network...
February 27, 2018: European Journal of Clinical Microbiology & Infectious Diseases
Zhineng Wu, Miaomiao Xie, Yao Li, Guanghai Gao, Mark Bartlam, Yingying Wang
Polybrominated diphenyl ethers (PBDEs) have become widespread environmental pollutants all over the world. A newly isolated bacterium from an e-waste recycling area, Stenotrophomonas sp. strain WZN-1, can degrade decabromodiphenyl ether (BDE 209) effectively under aerobic conditions. Orthogonal test results showed that the optimum conditions for BDE 209 biodegradation were pH 5, 25 °C, 0.5% salinity, 150 mL minimal salt medium volume. Under the optimized condition, strain WZN-1 could degrade 55.15% of 65 μg/L BDE 209 under aerobic condition within 30 day incubation...
February 24, 2018: AMB Express
Ming-Xia Chen, He-Yang Li, Xiao-Sheng Ye, Xiao-Yu He
The draft genome sequence of the extracellular protease-producing bacterium Stenotrophomonas bentonitica VV6, isolated from Arctic seawater, was established. The genome size was approximately 4.365 Mb, with a G+C content of 66.54%, and it contains 3,871 predicted protein-coding sequences (CDSs) and 60 tRNAs.
February 22, 2018: Genome Announcements
Paiboon Vattanaviboon, Punyawee Dulyayangkul, Skorn Mongkolsuk, Nisanart Charoenlap
Background: Stenotrophomonas maltophilia is an opportunistic human pathogen causing nosocomial infections worldwide. S. maltophilia infection is of particular concern due to its inherent resistance to currently used antibiotics. Proton motive force-driven transporters of the major facilitator superfamily frequently contribute to the efflux of substances, including antibiotics, across cell membranes. Methods: An mfsA expression plasmid (pMfsA) was constructed and transferred into bacterial strains by electroporation...
February 14, 2018: Journal of Antimicrobial Chemotherapy
Oriel Spierer, Darlene Miller, Terrence P O'Brien
BACKGROUND/AIMS: Achromobacter xylosoxidans and Stenotrophomonas maltophilia are emerging corneal pathogens, which are closely related to Pseudomonas aeruginosa , and have intrinsic resistance to many commonly available antimicrobials. The purpose of this study is to compare the in vitro efficacy of 12 antimicrobial agents against A. xylosoxidans , S. maltophilia and P. aeruginosa isolates recovered from clinical cases of keratitis. METHODS: Recovered corneal isolates (n=58) were identified and extracted from the Microbiology Data Bank of the Bascom Palmer Eye Institute...
February 19, 2018: British Journal of Ophthalmology
Ashraf S A El-Sayed, Asma Akbar, Irum Iqrar, Robina Ali, David Norman, Mary Brennan, Gul Shad Ali
Biological control is an eco-friendly strategy for mitigating and controlling plant diseases with negligible effects on human health and environment. Biocontrol agents are mostly isolated from field crops, and microbiomes associated with wild native plants is underexplored. The main objective of this study was to characterize the bacterial isolates associated with Smilax bona-nox L, a successful wild plant with invasive growth habits. Forty morphologically distinct bacterial isolates were recovered from S. bona-nox...
March 2018: Microbiological Research
Maria Parapouli, Athanasios Foukis, Panagiota-Yiolanda Stergiou, Maria Koukouritaki, Panagiotis Magklaras, Olga A Gkini, Emmanuel M Papamichael, Amalia-Sofia Afendra, Efstathios Hatziloukas
Background: Microbial lipases catalyze a broad spectrum of reactions and are enzymes of considerable biotechnological interest. The focus of this study was the isolation of new lipase genes, intending to discover novel lipases whose products bear interesting biochemical and structural features and may have a potential to act as valuable biocatalysts in industrial applications. Results: A novel lipase gene ( lipSm ), from a new environmental Stenotrophomonas maltophilia strain, Psi-1, originating from a sludge sample from Psittaleia (Greece), was cloned and sequenced...
December 2018: Journal of Biological Research
Nilab Sarmand, Daniela Gompelmann, Konstantina Kontogianni, Markus Polke, Felix Jf Herth, Ralf Eberhardt
Background: Bronchoscopic valve implantation is an established treatment in selected patients with severe lung emphysema. There is evidence in literature of increased bacterial colonization of various implants. So far, it is unclear if an increased bacterial colonization can also be observed after endoscopic valve therapy. Methods: Retrospective analysis of patients with examination of the bronchial secretions for presence or change of bacterial growth before and after valve implantation...
2018: International Journal of Chronic Obstructive Pulmonary Disease
Rosa Baldiris, Natali Acosta-Tapia, Alfredo Montes, Jennifer Hernández, Ricardo Vivas-Reyes
An Gram negative strain of S. maltophilia , indigenous to environments contaminated by Cr(VI) and identified by biochemical methods and 16S rRNA gene analysis, reduced chromate by 100%, 98-99% and 92% at concentrations in the 10-70, 80-300, and 500 mg/L range, respectively at pH 7 and temperature 37 °C. Increasing concentrations of Cr(VI) in the medium lowered the growth rate but could not be directly correlated with the amount of Cr(VI) reduced. The strain also exhibited multiple resistance to antibiotics and tolerance and resistance to various heavy metals (Ni, Zn and Cu), with the exception of Hg...
February 13, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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