108,572 results match your criteria Pseudomonas Folliculitis


Airborne bacteria in a wastewater treatment plant: Emission characterization, source analysis and health risk assessment.

Water Res 2018 Nov 14;149:596-606. Epub 2018 Nov 14.

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing, 101408, China. Electronic address:

Wastewater treatment plants (WWTPs) are major sources of airborne bacteria, which could pose health risks to WWTP workers and surrounding residents. In this study, air samples were collected from various treatment facilities of a typical WWTP. Community compositions of airborne bacteria were identified by high-throughput sequencing technique. Read More

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November 2018
4 Reads

Effects of ofloxacin on nitrogen removal and microbial community structure in constructed wetland.

Sci Total Environ 2018 Nov 27;656:503-511. Epub 2018 Nov 27.

Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, E1A 07-03, Singapore117576, Singapore.

Constructed wetlands (CWs) have emerged as a promising technology for the purification of micro-polluted water. However, their nitrogen removal performance can be significantly degraded by design, operational, and environmental factors. The present study investigates the effects of ofloxacin (OFL: 0. Read More

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November 2018
1 Read

Evaluation of hetero-multivalent lectin binding using a turbidity-based emulsion agglutination assay.

Colloids Surf B Biointerfaces 2018 Nov 28;175:84-90. Epub 2018 Nov 28.

Dept. of Chemical Engineering, Texas A&M University, College Station, TX, 77843, USA. Electronic address:

Lectin hetero-multivalency, binding to two or more different types of ligands, has been demonstrated to play a role in case of both LecA (a Pseudomonas aeruginosa adhesin) and Cholera Toxin subunit B (a Vibrio cholerae toxin). In order to screen the ligand candidates that involve in hetero-multivalent binding from large molecular libraries, we present a turbidity-based emulsion agglutination (TEA) assay that can be conducted in a high-throughput format using the standard laboratory instruments and reagents. The benefit of this assay is that it relies on the use of emulsions that can be formed using ultrasonication, minimizing the bottleneck of substrate surface functionalization. Read More

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November 2018
1 Read

Physicochemical responses and microbiological changes of bream (Megalobrama ambycephala) to pectin based coatings enriched with clove essential oil during refrigeration.

Int J Biol Macromol 2018 Dec 3. Epub 2018 Dec 3.

College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, PR China. Electronic address:

The effectiveness of pectin coatings enriched with clove essential oil (CEO), as new edible coatings were investigated to preserve bream (Megalobrama ambycephala) fillets during refrigeration over a period of 15 days. All samples were analyzed for physicochemical (pH, PV, TBA and TVB-N), microbiological (Total viable count, Psychrophilic bacteria, Lactic acid bacteria, Enterobacteriaceae, Pseudomonas spp., HS producing bacteria) and organoleptic attributes. Read More

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December 2018

The novel cationic cell-penetrating peptide PEP-NJSM is highly active against Staphylococcus epidermidis biofilm.

Int J Biol Macromol 2018 Dec 3. Epub 2018 Dec 3.

Laboratory of Molecular and Cellular Screening Processes, Centre of Biotechnology of Sfax, University of Sfax, Road Sidi Mansour km 6, PO BOX 1177, 3018 Sfax, Tunisia.

A cationic cell-penetrating peptide PEP-NJSM was identified in human virus proteomes by a screening of charge clusters in protein sequences generating cell penetrating peptides (CPP). PEP-NJSM was selectively active against Gram positive Staphylococcus epidermidis as antibacterial agent with MIC value of 128 μM compared to the Gram-negative Pseudomonas aeruginosa strain with MIC value exceeded 512 μM. The selected peptide exhibited an important anti-biofilm activity even at sub-MIC levels. Read More

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December 2018
1 Read

Influence of various uropathogens on crystallization of urine mineral components caused by Proteus mirabilis.

Res Microbiol 2018 Dec 3. Epub 2018 Dec 3.

Department of Biology of Bacteria, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland. Electronic address:

Infectious urolithiasis is a consequence of long-standing urinary tract infections with urease-positive bacteria, especially Proteus spp. However, because of the often mixed nature of urinary tract infections, in the case of urinary stones formation, several species of bacteria may be involved in the process. The purpose of the study was to determine the impact of the bacterial species: Escherichia coli, Klebsiella pneumoniae, Providencia stuartii, Pseudomonas aeruginosa and Staphylococcus aureus on the crystallization caused by Proteus mirabilis. Read More

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December 2018
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Pseudomonas coronafaciens sp. nov., a new phytobacterial species diverse from Pseudomonas syringae.

PLoS One 2018 6;13(12):e0208271. Epub 2018 Dec 6.

Department of Plant Pathology, Physiology and Weed Science, Tidewater Agricultural Research and Extension Center, Virginia Tech, Suffolk, VA, United States of America.

We propose Pseudomonas coronafaciens sp. nov. as a new species in genus Pseudomonas, which is diverse from P. Read More

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December 2018
1 Read

The influence of different composite mixtures (PLA/HA) manufactured with additive laser technology on the ability of S. aureus and P. aeruginosa to form biofilms.

Acta Bioeng Biomech 2018 ;20(4):101-106

Wrocław University of Science and Technology, Wrocław, Poland.

Purpose: Staphylococcus aureus (Gram-positive coccus) and Pseudomonas aeruginosa (Gram-negative bacterium) are the leading etiologic agents of biofilm-related, life-threatening infections in patients after orthopaedic implantations. The aim of the present paper is to estimate the ability of these two bacterial strains to form a biofilm on bioresorbable composites manufactured from polylactide (PLA) and hydroxyapatite (HA) with the use of Selective Laser Sintering (SLS) method.

Methods: Microbiological tests were conducted on two variants of a solid specimen made with additive laser technology. Read More

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January 2018
1 Read

Synthesis, Characterization, Antibacterial and Antioxidant Potency of N-Substituted-2-Sulfanylidene-1,3-Thiazolidin-4-one Derivatives and QSAR Study.

Med Chem 2018 Dec 5. Epub 2018 Dec 5.

Faculty of Agrobiotehnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Osijek. Croatia.

Background: Rhodanine is known for its potential and important role in the medicinal chemistry since its derivatives exhibit a wide range of pharmacological activities such as antibacterial, antifungal, antidiabetic, antitubercular, anti-HIV, antiparasitic, antioxidant, anticancer, anti-proliferative and anthelmintic agents.

Objectives: Since N-substituted rhodanine synthons are rarely commercially available, it is desirable to develop a straight forward synthetic approach for the synthesis of these key building blocks. The objective was to synthesize a series of rhodanine derivatives and to investigate their antimicrobial and antioxidant activity. Read More

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December 2018
1 Read

Rapid tool for identification of bacterial strains using Fourier-transform infrared spectroscopy on genomic DNA.

J Appl Microbiol 2018 Dec 5. Epub 2018 Dec 5.

Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup, Jeollabuk-do, 56212, Korea.

Aims: We developed a new rapid and reliable method for identifying bacteria using a combination of Fourier transform infrared (FT-IR) spectroscopy of bacterial genomic DNA and multivariate analysis.

Methods And Results: FT-IR spectra of genomic DNA from four type strains of Pseudomonas spp., three Escherichia spp. Read More

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December 2018

Increased sensitivity of microbiological testing of cornea organ culture medium by additional resin treatment.

BMJ Open Ophthalmol 2018 10;3(1):e000173. Epub 2018 Nov 10.

Institute for Transfusion Medicine, University Tissue Bank, Charité - Universitätsmedizin Berlin, Berlin, Germany.

Objective: This validation study investigates the treatment of cornea organ culture medium (Modified Eagle Medium, Biochrom GmbH, Berlin, Germany) with RESEP, a new medical device for antibiotics removal, before microbiological testing with BACTEC blood culture bottles.

Methods And Analysis: 10-100 colony forming units of and were inoculated in 9mL of cornea organ culture medium. In group A, the medium was withdrawn with RESEP and treated for 20 min at room temperature, and then inoculated in BACTEC Plus Aerobic/F/Anaerobic/F blood culture bottles. Read More

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November 2018
2 Reads

A methodology for detecting the wound state sensing in terms of its colonization of pathogenic bacteria.

MethodsX 2018 22;5:1521-1527. Epub 2018 Nov 22.

Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.

A methodology for wound state sensing in terms of its colonization with pathogenic bacteria such as or has been developed. Here we report polydiacetylene (PDA) liposomes containing self-quenched carboxyfluorescein dye are only sensitive to toxins/enzymes secreted by Pathogenic bacteria but not by non-pathogenic species of (DH5α). The basis of the detection assay is that at high concentration, carboxyfluorescein is non-fluorescent. Read More

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November 2018
1 Read

Distribution and drug resistance of pathogenic bacteria in ventilator-associated pneumonia at a local hospital of North-eastern China.

Infect Drug Resist 2018 13;11:2249-2255. Epub 2018 Nov 13.

Department of Emergency, Shengjing Hospital Affiliated to China Medical University, Heping District, Shenyang, Liaoning Province 110004, People's Republic of China,

Purpose: To study the distribution of pathogenic bacteria in ventilator-associated pneumonia (VAP), and epidemiological characteristics of extended-spectrum β lactamase (ESBL)-producing bacteria.

Patients And Methods: Lower respiratory tract secretions from 156 patients with mechanical ventilation were collected using a protective specimen brush (PSB), with quantitative bacterial culture carried out and antibiotic sensitivity measured. ESBLs produced by Gram-negative bacilli were detected using the double disk diffusion method and monitored by plasmid profiles. Read More

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November 2018

Lichen-associated bacterium, a novel bioresource of polyhydroxyalkanoate (PHA) production and simultaneous degradation of naphthalene and anthracene.

J Microbiol Biotechnol 2018 Nov 16. Epub 2018 Nov 16.

Korean Lichen Research Institute, Sunchon National University, Suncheon, Republic of Korea.

Lichens are generally known as self-sufficient symbiotic life-form between fungus and algae/cyanobacteria, also provide shelter for a wide range of beneficial bacteria. Besides, bacterial derived biodegradable polyhydroxyalkanoate (PHA) is currently grabbing the attention of many researchers as a promising alternative of non-degradable plastics. This study was conducted to develop a new method of PHA production using unexplored lichen-associated bacteria, which can simultaneously degrade two ubiquitous industrial toxins, anthracene and naphthalene. Read More

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November 2018
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Fatty acyl compounds from marine Streptomyces griseoincarnatus strain HK12 against two major bio-film forming nosocomial pathogens; an in vitro and in silico approach.

Microb Pathog 2018 Nov 30. Epub 2018 Nov 30.

Marine Biotechnology Laboratory, Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India. Electronic address:

The perpetual increase in the resistance offered by biofilm-forming nosocomial pathogens has become a critical clinical challenge. Marine Streptomyces sps present a promising future of novel compounds with novel applications. We focus on the anti-biofilm activity of marine Streptomyces against two major nosocomial pathogens from clinical samples, Pseudomonas aeruginosa and Staphylococcus aureus. Read More

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November 2018
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A Plant Immune Receptor Degraded by Selective Autophagy.

Mol Plant 2018 Nov 30. Epub 2018 Nov 30.

Department of Plant Pathology, University of Nebraska, Lincoln, NE 68588-0722, USA; Center for Plant Science Innovation, University of Nebraska, Lincoln, NE 68588-0660, USA. Electronic address:

Plants recycle non-activated immune receptors to maintain a functional immune system. The Arabidopsis immune receptor kinase FLAGELLIN-SENSING 2 (FLS2) recognizes bacterial flagellin. Arabidopsis orosomucoid (ORM) proteins are negative regulators of sphingolipid biosynthesis, but the mechanism by which they do this is not well understood. Read More

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November 2018

Comparative analysis of the antibacterial and drug-modulatory effect of d-limonene alone and complexed with β-cyclodextrin.

Eur J Pharm Sci 2018 Nov 30. Epub 2018 Nov 30.

Department of Biological Chemistry, Laboratory of Microbiology and Molecular Biology - LMBM, Regional University of Cariri, Crato, Ceará, Brazil. Electronic address:

With the increase in bacterial resistance to antibiotics, many studies have been directed towards finding new agents with antibacterial activity, such as studies with natural products. These products can have antibacterial activity such as d-limonene as described in the literature. The aim of this study was to evaluate the antibacterial activity of d-limonene, isolated and complexed with β-cyclodextrin, and to evaluate its potentiating activity of different antibiotic classes. Read More

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November 2018

Remediation of deterioration in microbial structure in continuous Pinellia ternata cropping soil by crop rotation.

Can J Microbiol 2018 Dec 3. Epub 2018 Dec 3.

Northwest Agriculture and Forestry University, 12469, College of Life Sciences, Yangling, Shaanxi, China ;

Pinellia ternata is a traditional Chinese herb that suffers from continuous cropping (CC), which significantly decreases both yield and quality. The influence of CC on microbiome in P. ternata rhizosphere and the effects of remediation on microbiota by rotational cropping (CR) were assessed by Illumina high-throughput sequencing technology. Read More

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December 2018

Performances of the Rapid Polymyxin Acinetobacter and Pseudomonas Tests for Colistin Susceptibility Testing.

Microb Drug Resist 2018 Dec 1. Epub 2018 Dec 1.

1 Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Department of Medicine, Faculty of Science and Medicine, University of Fribourg , Fribourg, Switzerland .

Objectives: Owing to the emergence of colistin resistance in nonfermenting Gram negative bacteria, reliable and rapid techniques for testing colistin susceptibility are needed. We evaluated the performances of the Rapid Polymyxin Acinetobacter and Pseudomonas tests using a collection of Acinetobacter baumannii and Pseudomonas aeruginosa clinical isolates.

Methods: Colistin susceptibility of A. Read More

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December 2018

Detecting Early Markers of Ventilator-Associated Pneumonia by Analysis of Exhaled Gas.

Crit Care Med 2018 Nov 30. Epub 2018 Nov 30.

Department of Anesthesiology, University Medical Center Göttingen, Göttingen, Germany.

Objectives: The detection of microbial volatile organic compounds or host response markers in the exhaled gas could give an earlier diagnosis of ventilator-associated pneumonia. Gas chromatography-ion mobility spectrometry enables noninvasive, rapid, and sensitive analysis of exhaled gas. Using a rabbit model of ventilator-associated pneumonia we determined if gas chromatography-ion mobility spectrometry is able to detect 1) ventilator-associated pneumonia specific changes and 2) bacterial species-specific changes in the exhaled gas. Read More

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November 2018

Post Dengue Fever Epidural Abscess With or Without Spondylodiscitis: A Case Series of Eight Patients in a Single Season in a Single Center: Does the Dengue Have a Predilection for the Neural Tissue?

Spine (Phila Pa 1976) 2018 Dec;43(24):E1454-E1462

Aster MIMS Hospital, Calicut, Kerala, India.

Study Design: A retrospective case series.

Objective: The aim of this study was to report the immunosuppression and secondary bacterial infection after dengue viral infection and the predilection of these infections in the spine. This can trigger further research in to this fact. Read More

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December 2018

The role of surfactant protein-A in sinusitis.

Authors:
Eugene H Chang

Curr Opin Allergy Clin Immunol 2018 Nov 29. Epub 2018 Nov 29.

Department of Otolaryngology - Head & Neck Surgery, University of Arizona College of Medicine, Tucson, Arizona, USA.

Purpose Of Review: Surfactant protein-A (SP-A) is a collectin protein expressed in airway epithelia that is critical in the modulation of both innate and adaptive immunity against inhaled pathogens. In this review, we highlight associations of altered SP-A function in asthma and chronic rhinosinusitis, and its potential role as a targeted therapy for sinusitis.

Recent Findings: SP-A has been shown to bind and opsonize inhaled pathogens, thereby clearing bacteria through phagocytosis. Read More

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November 2018

Crystal structure analysis and enzymatic characterization of γ-glutamyltranspeptidase from Pseudomonas nitroreducens.

Biosci Biotechnol Biochem 2018 Dec 3:1-8. Epub 2018 Dec 3.

b Department of Biotechnology , College of Life Sciences, Ritsumeikan University , Kusatsu, Shiga , Japan.

Theanine (γ-glutamylethylamide) is an amino acid analog that reduces blood pressure and improves immune responses. The ϒ-glutamyltranspeptidase (GGT) from Pseudomonas nitroreducens IFO12694 (PnGGT) has a unique preference for primary amines as ϒ-glutamyl acceptors over standard L-amino acids and peptides. This characteristic is useful for the synthesis of theanine. Read More

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December 2018

Amikacin target achievement in adult cystic fibrosis patients utilizing Monte Carlo simulation.

Pediatr Pulmonol 2018 Dec 3. Epub 2018 Dec 3.

Department of Pharmacy Practice and Science, University of Kentucky College of Pharmacy, Lexington, Kentucky.

Aim: Pseudomonas aeruginosa (PsA) is a common pathogen in cystic fibrosis (CF). Management of an acute pulmonary exacerbation (APE) caused by PsA is dual anti-pseudomonal antibiotics, a beta-lactam plus aminoglycoside. Aminoglycoside dosing in CF differs from the general population due to altered pharmacokinetics. Read More

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December 2018

Characterization of NPR1 and NPR4 genes from mulberry (Morus multicaulis) and their roles in development and stress resistance.

Physiol Plant 2018 Dec 2. Epub 2018 Dec 2.

College of Forestry, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China.

The quality and quantity of mulberry leaves are often affected by various environmental factors. The plant NPR1 and its homologous genes are important for plant systemic acquired resistance. Here, the full-length cDNAs encoding the NPR1 and NPR4 genes (designated MuNPR1 and MuNPR4, respectively) were isolated from Morus multicaulis. Read More

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December 2018

Biosynthesis and characterization of a novel, biocompatible medium chain length polyhydroxyalkanoate by Pseudomonas mendocina CH50 using coconut oil as the carbon source.

J Mater Sci Mater Med 2018 Nov 30;29(12):179. Epub 2018 Nov 30.

Applied Biotechnology Research Group, School of Life Sciences, University of Westminster, London, UK.

This study validated the utilization of triacylglycerides (TAGs) by Pseudomonas mendocina CH50, a wild type strain, resulting in the production of novel mcl-PHAs with unique physical properties. A PHA yield of 58% dcw was obtained using 20 g/L of coconut oil. Chemical and structural characterisation confirmed that the mcl-PHA produced was a terpolymer comprising of three different repeating monomer units, 3-hydroxyoctanoate, 3-hydroxydecanoate and 3-hydroxydodecanoate or P(3HO-3HD-3HDD). Read More

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November 2018
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Impact of Beneficial Microorganisms on Strawberry Growth, Fruit Production, Nutritional Quality, and Volatilome.

Front Plant Sci 2018 16;9:1611. Epub 2018 Nov 16.

Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy.

Arbuscular mycorrhizal fungi (AMF) colonize the roots of most terrestrial plant species, improving plant growth, nutrient uptake and biotic/abiotic stress resistance and tolerance. Similarly, plant growth promoting bacteria (PGPB) enhance plant fitness and production. In this study, three different AMF (, and ) were used in combination with three different strains of sp. Read More

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November 2018

Cobalamin (Vitamin B12) Induced a Shift in Microbial Composition and Metabolic Activity in an Colon Simulation.

Front Microbiol 2018 16;9:2780. Epub 2018 Nov 16.

School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China.

Cobalamin deficiency is believed to be related to disturbances in cell division, neuropathy, nervous system disease and pernicious anemia. Elderly people are usually advised to supplement their diets with cobalamin. As cobalamin has several forms, the effects of different forms of cobalamin on gut microbiota were investigated in this study. Read More

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November 2018

Diazotrophs and N-Fixation Associated With Particles in Coastal Estuarine Waters.

Front Microbiol 2018 16;9:2759. Epub 2018 Nov 16.

Marine Biological Section, Department of Biology, University of Copenhagen, Helsingør, Denmark.

Putative heterotrophic bacteria carrying out N-fixation, so-called non-cyanobacterial diazotrophs (NCDs), are widely distributed in marine waters, but details of how the O-inhibited N-fixation process is promoted in the oxic water column remains ambiguous. Here we carried out two experiments with water from a eutrophic temperate fjord to examine whether low-oxygen microenvironments within particulate organic matter could be loci suitable for N-fixation. First, water enriched with natural particles or sediment showed higher N-fixation rates than bulk water, and nitrogenase genes () revealed that specific diazotrophs were affiliated with the particulate matter. Read More

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November 2018

The epidemiology of nonviral microbial keratitis in a tertiary care center in Muscat, Oman.

Oman J Ophthalmol 2018 Sep-Dec;11(3):213-219

Department of Ophthalmology, Al-Nahdah Hospital, Muscat, Oman.

Objective: The objective of this study is to describe the epidemiology, risk factors, etiology, and outcome of microbial keratitis in a tertiary care center in Muscat, Oman.

Methods: The electronic records of all patients diagnosed with keratitis or corneal ulcer between January 2013 and January 2016 in Al-Nahdha Hospital were retrospectively reviewed. Patients who presented with a corneal ulcer requiring admission and who underwent culture and sensitivity studies were included in the study. Read More

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December 2018

Electrochemical Detection of Small Molecule Induced Biofilm Dispersion.

Electrochim Acta 2018 Apr 2;268:276-282. Epub 2018 Mar 2.

East Carolina University, Department of Chemistry.

A simple electrochemical assay to monitor the dispersion of PA01 biofilm is described. Pyrolytic graphite (PG) electrodes were modified with PA01 using layer-by-layer (LbL) methods. The presence of the bacteria on the electrodes was directly monitored using square wave voltammetry (SWV) via the electrochemical reduction of electroactive phenazine compounds expressed by the bacteria, which indicate the presence of biofilm. Read More

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Bioreactor-based mass production of human iPSC-derived macrophages enables immunotherapies against bacterial airway infections.

Nat Commun 2018 Nov 30;9(1):5088. Epub 2018 Nov 30.

JRG Translational Hematology of Congenital Diseases, Hannover Medical School, Hannover, Germany.

The increasing number of severe infections with multi-drug-resistant pathogens worldwide highlights the need for alternative treatment options. Given the pivotal role of phagocytes and especially alveolar macrophages in pulmonary immunity, we introduce a new, cell-based treatment strategy to target bacterial airway infections. Here we show that the mass production of therapeutic phagocytes from induced pluripotent stem cells (iPSC) in industry-compatible, stirred-tank bioreactors is feasible. Read More

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November 2018
1 Read

Persistence of root-colonizing Pseudomonas protegens in herbivorous insects throughout different developmental stages and dispersal to new host plants.

ISME J 2018 Nov 30. Epub 2018 Nov 30.

Plant Pathology, Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland.

The discovery of insecticidal activity in root-colonizing pseudomonads, best-known for their plant-beneficial effects, raised fundamental questions about the ecological relevance of insects as alternative hosts for these bacteria. Since soil bacteria are limited in their inherent abilities of dispersal, insects as vectors might be welcome vehicles to overcome large distances. Here, we report on the transmission of the root-colonizing, plant-beneficial and insecticidal bacterium Pseudomonas protegens CHA0 from root to root by the cabbage root fly, Delia radicum. Read More

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November 2018

Biotechnological applications of quorum sensing inhibition as novel therapeutic strategies for multidrug resistant pathogens.

Microb Pathog 2018 Nov 29. Epub 2018 Nov 29.

Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Taibah University, Al Madinah Al Munawwarah, 30078, Saudi Arabia; Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, 35516, Egypt. Electronic address:

High incidence of antibiotic resistance among bacterial clinical isolates necessitates the discovery of new targets for inhibition of microbial pathogenicity without stimulation of microbial resistance. This could be achieved by targeting virulence determinants which cause host damage and disease. Many pathogenic bacteria elaborate signaling molecules for cellular communication. Read More

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November 2018

Polyethylene/Organo-Inorgano Vermiculites and Their Antimicrobial Properties.

J Nanosci Nanotechnol 2019 May;19(5):2599-2605

SPUR a.s., těr. T. Bati 299, 764 22 Zlín, Czech Republic.

Clay mineral vermiculite was treated with silver and copper nitrate solutions and samples were subsequently modified with organic compound (dodecylamine) via solid-solid melt intercalation. Prepared organo-inorgano vermiculites were used as nanofillers to the polyethylene matrix. Mixtures of polyethylene with vermiculite nanofillers, prepared by melt compounding technique, were pressed into thin plates. Read More

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Etiology of Childhood Otorrhea in Luanda, Angola, and a Review of Otitis Media in African Children.

Pediatr Infect Dis J 2018 Dec 3. Epub 2018 Dec 3.

Children's Hospital, Helsinki University Hospital, Helsinki, Finland and University of Helsinki, Helsinki, Finland.

Background: In resource-poor settings, otorrhea causes a significant burden of disease in children. Etiologic studies and structured data on otorrhea and chronic otitis media among African children remain scarce.

Methods: Here, we reviewed 678 bacteriologically analyzed otorrhea samples from Luanda Children's Hospital from children ≤15 years of age between 2008 and 2015. Read More

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December 2018
2 Reads

Risk factors for mortality in patients with diabetic foot infections: a prospective cohort study.

Intern Med J 2018 Dec 4. Epub 2018 Dec 4.

Staff Specialist, Department of Infectious Diseases, Royal Darwin Hospital, Tiwi, NT, Australia.

Background: An increasing prevalence of diabetes mellitus has led to a high risk of diabetic foot infections (DFI) and associated morbidity. However, little is known about the relationship between DFI and mortality.

Aims: To investigate the risk of mortality and associated factors in patients with DFI in an Australian context. Read More

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December 2018
2 Reads

Susceptibility of Tc-Ciprofloxacin for Common Infection Causing Bacterial Strains Isolated from Clinical Samples: an In Vitro and In Vivo Study.

Appl Biochem Biotechnol 2018 Dec 5. Epub 2018 Dec 5.

Department of Chemistry, Government College University, New Campus, Faisalabad, 38000, Pakistan.

Tc-ciprofloxacin scintigraphy is useful in the detection of gram-positive and gram-negative bacterial infections and also for differentiating the infection from aseptic inflammation. However, due to growing bacterial resistance to antibiotics, the Tc-ciprofloxacin no longer can be effective in broad-spectrum infection imaging as it is gradually losing specificity. In this study, we are presenting our findings regarding the in vitro and in vivo susceptibility of Tc-ciprofloxacin for multi-drug-resistant Staphylococcus aurous, Escherichia coli, and Pseudomonas aeruginosa bacterial strains which were isolated from clinical samples. Read More

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December 2018

The Relationship between Colonization by and Tonsillar Hypertrophy.

Can J Infect Dis Med Microbiol 2018 1;2018:5406467. Epub 2018 Nov 1.

Department of Ophthalmology, Otorhinolaryngology, Head and Neck Surgery, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, SP 14049-900, Brazil.

We sought to investigate the prevalence of potentially pathogenic bacteria in secretions and tonsillar tissues of children with chronic adenotonsillitis hypertrophy compared to controls. Prospective case-control study comparing patients between 2 and 12 years old who underwent adenotonsillectomy due to chronic adenotonsillar hypertrophy to children without disease. We compared detection of , , , and by real-time PCR in palatine tonsils, adenoids, and nasopharyngeal washes obtained from 37 children with and 14 without adenotonsillar hypertrophy. Read More

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November 2018
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Investigation of Antioxidant/Oxidant Status and Antimicrobial Activities of .

Authors:
Mustafa Sevindik

Adv Pharmacol Sci 2018 1;2018:1718025. Epub 2018 Nov 1.

Department of Biology, Faculty of Science, Akdeniz University, Antalya, Turkey.

In the present study, antioxidant and antimicrobial potential of the (Bull.) Fr. mushroom was determined. Read More

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November 2018
1 Read

Bacterial Metabolism During Biofilm Growth Investigated by C Tracing.

Front Microbiol 2018 20;9:2657. Epub 2018 Nov 20.

Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO, United States.

This study investigated the metabolism of PAO1 during its biofilm development via microscopy imaging, gene expression analysis, and C-labeling. First, dynamic labeling was employed to investigate glucose utilization rate in fresh biofilms (thickness 40∼60 micrometer). The labeling turnover time of glucose-6-P indicated biofilm metabolism was substantially slower than planktonic cells. Read More

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November 2018
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Inactivation of Pseudomonas aeruginosa and Methicillin-resistant Staphylococcus aureus in an open water system with ozone generated by a compact, atmospheric DBD plasma reactor.

Sci Rep 2018 Dec 4;8(1):17573. Epub 2018 Dec 4.

Applied Physics Research Group, University of Florida, 32611, Gainesville, USA.

Ozone is a well-known disinfecting agent that is used as an alternative for chlorine in many applications, including water decontamination. However, the utility of ozone in water decontamination is limited by high electrical power consumption and expensive, bulky equipment associated with ozone generation. This study investigates the effectiveness of a lightweight, compact surface dielectric barrier discharge (SDBD) reactor as an ozone generator to inactivate Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA) in an open water system. Read More

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December 2018
4 Reads

Inoculation of fly ash amended vermicompost with phosphate solubilizing bacteria (Pseudomonas fluorescens) and its influence on vermi-degradation, nutrient release and biological activity.

Waste Manag 2019 Jan 2;83:14-22. Epub 2018 Nov 2.

Department of Agronomy, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa. Electronic address:

Due to the crucial role played by microbes during vermicomposting, deliberate inoculation of composts with specialized microbes as a way of further optimizing the vermicomposting process has been suggested. This study evaluated the potential of inoculating fly ash - cow dung - waste paper vermicompost with phosphate solubilizing bacteria (P. fluorescens) in improving vermi-degradation, nutrient mineralization and biological activity. Read More

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January 2019
1 Read

Épidémiologie et prévention des infections associées aux soins. Entre 4 000 et 20 000 décès annuels.

Authors:
Élise Seringe

Rev Prat 2017 Feb;66(2):206-210

Antenne Île-de-France du CClin Paris-Nord, Paris, France.

Epidemiology and prevention of health care associated infections. Nosocomial infections (NI) are infections contracted in a healthcare facility. This definition has become unsuited to current care practices where initially the distinguishing criterion was the place of acquisition of infection (nosocomial versus community). Read More

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February 2017
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Composition and Antimicrobial Activity of the Essential Oils of Three Plant Species from the Sabana of Bogota (Colombia): Myrcianthes leucoxyla, Vallea stipularis and Phyllanthus salviifolius.

Nat Prod Commun 2016 Dec;11(12):1913-1918

In recent decades, essential oils (EOs) have become an important alternative source of antimicrobial agents. The objective of this study was to evaluate the antimicrobial activity of EOs obtained from the leaves of Myrcianthes leucoxyla Mc. Vaughn. Read More

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December 2016

Micromeria thymifolia Essential Oil Suppresses Quorum-sensing Signaling in Pseudomonas aeruginosa.

Nat Prod Commun 2016 Dec;11(12):1903-1906

The chemical composition, antimicrobial and antiquorum sensing activity of the essential oil of Micromeria thymifolia (Scop.) Fritsch were investigated. Limonene, piperitone epoxide and piperitenone epoxide were found as the main constituents using a gas chromatography-mass spectrometry technique. Read More

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December 2016

Isolation and identification of Pseudomonas from wastewater, its immobilization in cellulose biopolymer and performance in degrading Triclosan.

J Environ Manage 2018 Dec 1;232:584-591. Epub 2018 Dec 1.

Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, India.

Triclosan (TCS) is a well-known emerging contaminant got wide use in daily use products of domestic purpose, which provides the way to enter the ecological cycle, and is preferably detected in sewage treatment plants. In this study, TCS degrading bacteria (TDB) was isolated and identified from a wastewater treatment plant at the National Institute of Technology-Karnataka, Surathkal (NITK), India. The isolate was reported as Pseudomonas strain by performing 16S RNA Sequencing using BLAST analysis. Read More

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December 2018

Heterologous expression of Thrombocidin-1 in Pichia pastoris: Evaluation of its antibacterial and antioxidant activity.

Microb Pathog 2018 Dec 1. Epub 2018 Dec 1.

Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran.

The antimicrobial peptide Thrombocidin-1 (TC-1) isolated from human blood that derived from NAP-2 by deleting of two amino acids from C-terminal region. In this study, a C-terminal 6 _ His tagged recombinant TC-1 was expressed as a secreted peptide in Pichia pastoris, for the first time. The recombinant P. Read More

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December 2018
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Fixed-Quat: An Attractive Nonmetal Alternative to Copper Biocides against Plant Pathogens.

J Agric Food Chem 2018 Dec 4. Epub 2018 Dec 4.

Citrus Research and Education Center , University of Florida , 700 Experiment Station Road , Lake Alfred , Florida 33850 , United States.

In this paper, we report a nonphytotoxic bactericide and fungicide formulation containing a composite of silica and quaternary ammonium compound (quat). The composite material was prepared using an acid-catalyzed sol-gel method. Positively charged quat was associated with a negatively charged silica-gel matrix, producing a stable suspension of fixed-quat gel (FQ-G). Read More

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December 2018