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https://www.readbyqxmd.com/read/28730551/pseudomonas-fluorescens-r68-assisted-enhancement-in-growth-and-fertilizer-utilization-of-amaranthus-tricolor-l
#1
C Jimtha John, P Jishma, N R Karthika, K S Nidheesh, J G Ray, Jyothis Mathew, E K Radhakrishnan
Plant probiotic potential of rhizosphere microbiome and its role in phytofertilizer mobilization are largely unexplored. In the current study, the rhizobacterium Pseudomonas fluorescens R68 (PFR68) isolated from Western Ghat was analyzed for its growth enhancement effect on the leafy vegetable Amaranthus tricolor (L.). One month of field growth of PFR68 inoculated A. tricolor has found to have enhanced growth parameters such as leaf number (1.57 fold), root number (1.76 fold), shoot length (1.28 fold) and fresh weight (2...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28729206/antimicrobial-resistance-patterns-of-gram-negative-bacteria-isolated-from-bloodstream-infections-in-an-iranian-referral-pediatric-hospital-a-six-year-study
#2
Shima Mahmoudi, Masoumeh Mahzari, Maryam Banar, Babak Pourakbari, Mohammad Taghi Haghi Ashtiani, Mohsen Mohammadi, Sepideh Keshavarz Valian, Setareh Mamishi
INTRODUCTION: Bloodstream infections (BSIs) are considered as a major cause of morbidity and mortality in children all over the world. The aim of this study was to describe the epidemiology and antimicrobial resistance patterns of Gram-negative bacteria (GNB) isolated from bloodstream infections (BSIs) in children admitted to the Children Medical Center Hospital (CMC), Tehran, Iran. METHODS: Clinical and microbiological data of the patients with positive blood cultures was collected from March 2011 to September 2016...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28728202/-pyogenic-liver-abscess-changes-of-organisms-and-consequences-for-diagnosis-and-therapy
#3
Alexander Mischnik, Winfried Vincenz Kern, Robert Thimme
Liver abscess is a rare but potentially fatal disease with mortality rates of 2 - 12 %. The spectrum of causative microorganisms varies across the world and is changing due to increasing worldwide travel activity. As a result, previously less frequent pathogens must increasingly be considered in the differential diagnosis. The most common pathogens of liver abscess are so-called abscess streptococci, anaerobes and Gram-negative bacteria such as Escherichia coli and Klebsiella pneumoniae. Certain clones among the Gram-negatives, typically among Klebsiella spp...
July 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28725623/isolation-and-characterization-of-antimicrobial-compound-from-the-stem-bark-of-the-traditionally-used-medicinal-plant-adenium-obesum
#4
Mohammed Sohail Akhtar, Mohammad Amzad Hossain, Sadri Abdullah Said
BACKGROUND: Medicinal plants constitute a natural reservoir for medicines worldwide. They serve mainstream therapeutics and are central in folklore medicine. In case of Adenium obesum (Lav, Apocynaceae), indigenous people of Oman use it for the treatment of venereal diseases, wounds, skin diseases, headaches, muscle pain as well as joint pain; yet, the active ingredients have not been classified. To screened the antioxidant and antimicrobial activities of an identified compound that we isolated from the highest active chloroform extract...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28725525/microbial-degradation-of-petrochemical-waste-polycyclic-aromatic-hydrocarbons
#5
M H Fulekar
BACKGROUND: Petrochemical industry is one of the fastest growing industries. This industry has immense importance in the growth of economy and manufacture of large varieties of chemicals. The petrochemical industry is a hazardous group of industry generating hazardous waste containing organic and inorganic compounds. In spite of the present treatment process, the hazardous waste compounds are found untreated to the acceptable level and found discharged at soil-water environment resulting into the persistent organic-inorganic pollutant into the environment...
2017: Bioresources and Bioprocessing
https://www.readbyqxmd.com/read/28720732/pseudomonas-aeruginosa-alters-staphylococcus-aureus-sensitivity-to-vancomycin-in-a-biofilm-model-of-cystic-fibrosis-infection
#6
Giulia Orazi, George A O'Toole
The airways of cystic fibrosis (CF) patients have thick mucus, which fosters chronic, polymicrobial infections. Pseudomonas aeruginosa and Staphylococcus aureus are two of the most prevalent respiratory pathogens in CF patients. In this study, we tested whether P. aeruginosa influences the susceptibility of S. aureus to frontline antibiotics used to treat CF lung infections. Using our in vitro coculture model, we observed that addition of P. aeruginosa supernatants to S. aureus biofilms grown either on epithelial cells or on plastic significantly decreased the susceptibility of S...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28719657/isolation-and-in-vitro-evaluation-of-bacteriophages-against-mdr-bacterial-isolates-from-septic-wound-infections
#7
Roja Rani Pallavali, Vijaya Lakshmi Degati, Dakshayani Lomada, Madhava C Reddy, Vijaya Raghava Prasad Durbaka
Multi-drug resistance has become a major problem for the treatment of pathogenic bacterial infections. The use of bacteriophages is an attractive approach to overcome the problem of drug resistance in several pathogens that cause fatal diseases. Our study aimed to isolate multi drug resistant bacteria from patients with septic wounds and then isolate and apply bacteriophages in vitro as alternative therapeutic agents. Pus samples were aseptically collected from Rajiv Gandhi Institute of Medical Science (RIMS), Kadapa, A...
2017: PloS One
https://www.readbyqxmd.com/read/28717120/new-delhi-metallo-beta-lactamase-ndm-1-producing-klebsiella-pneumoniae-isolated-from-a-burned-patient
#8
Santiago Petersen-Morfin, Paola Bocanegra-Ibarias, Rayo Morfin-Otero, Elvira Garza-González, Hector Raul Perez-Gomez, Esteban González-Diaz, Sergio Esparza-Ahumada, Gerardo León-Garnica, Gabriel Amezcua-Salazar, Eduardo Rodriguez-Noriega
BACKGROUND Infections affecting burn patients are frequently caused by Staphylococcus aureus, Pseudomonas aeruginosa, and Enterobacteriaceae species. Infections with these pathogens have become increasingly difficult to treat due to evolving antibiotic resistance mechanisms, including the production of carbapenemases. CASE REPORT The present case report describes the evolution of a burn patient with polymicrobial healthcare-associated burn infections, including a bloodstream infection due to an emergent multidrug-resistant New Delhi metallo-beta-lactamase (NDM-1)-producing Klebsiella pneumoniae...
July 18, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28715739/antimicrobial-and-antibiofilm-efficacy-of-self-cleaning-surfaces-functionalized-by-tio2-photocatalytic-nanoparticles-against-staphylococcus-aureus-and-pseudomonas-putida
#9
Blanca Jalvo, Marisol Faraldos, Ana Bahamonde, Roberto Rosal
A photocatalytic sol of TiO2 nanoparticles has been used for creating self-cleaning antimicrobial flat and porous glass surfaces. The substrates were irradiated to study their photocatalytic properties and behavior in the presence of biofilm-forming bacteria. Smooth glass surfaces and glass microfiber filters were covered with 1.98×10(-3)±1.5×10(-4)gcm(-2) and 8.55×10(-3)±3.0×10(-4)gcm(-2) densities, respectively. Self-cleaning properties were analyzed using the methylene blue 365nm UV-A photodegradation test...
July 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28713356/a-genotypic-analysis-of-five-p-aeruginosa-strains-after-biofilm-infection-by-phages-targeting-different-cell-surface-receptors
#10
Diana P Pires, Andreas Dötsch, Erin M Anderson, Youai Hao, Cezar M Khursigara, Joseph S Lam, Sanna Sillankorva, Joana Azeredo
Antibiotic resistance constitutes one of the most serious threats to the global public health and urgently requires new and effective solutions. Bacteriophages are bacterial viruses increasingly recognized as being good alternatives to traditional antibiotic therapies. In this study, the efficacy of phages, targeting different cell receptors, against Pseudomonas aeruginosa PAO1 biofilm and planktonic cell cultures was evaluated over the course of 48 h. Although significant reductions in the number of viable cells were achieved for both cases, the high level of adaptability of the bacteria in response to the selective pressure caused by phage treatment resulted in the emergence of phage-resistant variants...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28712963/anti-quorum-sensing-activity-of-pistacia-atlantica-against-pseudomonas-aeruginosa-pao1-and-identification-of-its-bioactive-compounds
#11
H Kordbacheh, F Eftekhar, S N Ebrahimi
Pseudomonas aeruginosa is a multidrug resistant opportunistic pathogen and an important cause of nosocomial infections. Quorum-sensing (QS) is a process in which bacterial cell-cell communication can regulates production of many virulence factors including pigment formation and the ability to form biofilm which is essential for establishment of chronic infections. We examined the inhibitory effect of Pistacia atlantica (Anacardiaceae) methanolic leaf extract and its bioactive components on biofilm formation and pigment production by P...
July 14, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28711802/two-stage-anoxic-oxic-combined-membrane-bioreactor-system-for-landfill-leachate-treatment-pollutant-removal-performances-and-microbial-community
#12
Jianbo Liu, Haibo Zhang, Panyue Zhang, Yan Wu, Xiying Gou, Yonghui Song, Zhiyong Tian, Guangming Zeng
In this study, a laboratory-scale two-stage anoxic/oxic (A/O) combined membrane bioreactor (MBR) was operated for 113d for the treatment of landfill leachate. The average removal of chemical oxygen demand (COD), ammonia (NH4(+)-N) and total nitrogen (TN) achieved 80.60%, 99.04% and 74.87%, respectively. A mass balance evaluation suggested that the removal of COD, NH4(+)-N and TN occurred mainly in the second A/O process, and the total removal capacity of COD, NH4(+)-N and TN were 125.60g/d, 24.35g/d and 22...
July 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28711222/retrospective-observational-study-of-french-patients-with-cystic-fibrosis-and-a-gly551asp-cftr-mutation-after-1-and-2years-of-treatment-with-ivacaftor-in-a-real-world-setting
#13
Dominique Hubert, Clémence Dehillotte, Anne Munck, Valérie David, Jinmi Baek, Laurent Mely, Stéphane Dominique, Sophie Ramel, Isabelle Danner Boucher, Sylvaine Lefeuvre, Quitterie Reynaud, Virginie Colomb-Jung, Prissile Bakouboula, Lydie Lemonnier
BACKGROUND: Ivacaftor has been shown to improve lung function and body weight in patients with CF and a gating mutation. Real-world evaluation is warranted to examine its safety and effectiveness over the long term. METHODS: A retrospective observational multicentre study collected clinical data in the year before and the 2years after ivacaftor initiation in patients with CF and a Gly551Asp-CFTR mutation. RESULTS: Fifty-seven patients were included...
July 12, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28710229/pirate-project-point-of-care-informatics-based-randomised-controlled-trial-for-decreasing-overuse-of-antibiotic-therapy-in-gram-negative-bacteraemia
#14
Angela Huttner, Werner C Albrich, Pierre-Yves Bochud, Angèle Gayet-Ageron, Anne Rossel, Elodie von Dach, Stephan Harbarth, Laurent Kaiser
INTRODUCTION: Antibiotic overuse drives antibiotic resistance. The optimal duration of antibiotic therapy for Gram-negative bacteraemia (GNB), a common community and hospital-associated infection, remains unknown and unstudied via randomised controlled trials (RCTs). METHODS AND ANALYSIS: This investigator-initiated, multicentre, non-inferiority, informatics-based point-of-care RCT will randomly assign adult hospitalised patients receiving microbiologically efficacious antibiotic(s) for GNB to (1) 14 days of antibiotic therapy, (2) 7 days of therapy or (3) an individualised duration determined by clinical response and 75% reduction in peak C reactive protein (CRP) values...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28708609/evaluation-of-nutrients-removal-no3-n-nh3-n-and-po4-p-with-chlorella-vulgaris-pseudomonas-putida-bacillus-cereus-and-a-consortium-of-these-microorganisms-in-the-treatment-of-wastewater-effluents
#15
Abril Gómez-Guzmán, Sergio Jiménez-Magaña, A Suggey Guerra-Rentería, César Gómez-Hermosillo, F Javier Parra-Rodríguez, Sergio Velázquez, Blanca Rosa Aguilar-Uscanga, Josue Solis-Pacheco, Orfil González-Reynoso
In this research removal of NH3-N, NO3-N and PO4-P nutrients from municipal wastewater was studied, using Chlorella vulgaris, Pseudomonas putida, Bacillus cereus and an artificial consortium of them. The objective is to analyze the performance of these microorganisms and their consortium, which has not been previously studied for nutrient removal in municipal wastewater. A model wastewater was prepared simulating the physicochemical characteristics found at the wastewater plant in Chapala, Mexico. Experiments were carried out without adding an external carbon source...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28708218/microbial-characteristics-of-posttraumatic-infective-keratitis
#16
Blanche X Lim, Victor T C Koh, Manotosh Ray
PURPOSE: To determine the demographics, risk factors, clinical and microbiological characteristics, and treatment outcome of posttraumatic infective keratitis. METHODS: Consecutive patients with posttraumatic infective keratitis presenting to the Ophthalmology Department of a tertiary referral hospital in Singapore between March 2012 and March 2016 were prospectively identified. A standardized data collection form was used to document patient demographics, microbiological diagnosis, antibiotic sensitivity, and pretreatment and posttreatment ocular characteristics...
July 8, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28704651/synergy-between-the-host-immune-system-and-bacteriophage-is-essential-for-successful-phage-therapy-against-an-acute-respiratory-pathogen
#17
Dwayne R Roach, Chung Yin Leung, Marine Henry, Eric Morello, Devika Singh, James P Di Santo, Joshua S Weitz, Laurent Debarbieux
The rise of multi-drug-resistant (MDR) bacteria has spurred renewed interest in the use of bacteriophages in therapy. However, mechanisms contributing to phage-mediated bacterial clearance in an animal host remain unclear. We investigated the effects of host immunity on the efficacy of phage therapy for acute pneumonia caused by MDR Pseudomonas aeruginosa in a mouse model. Comparing efficacies of phage-curative and prophylactic treatments in healthy immunocompetent, MyD88-deficient, lymphocyte-deficient, and neutrophil-depleted murine hosts revealed that neutrophil-phage synergy is essential for the resolution of pneumonia...
July 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28704642/infections-after-shoulder-arthroplasty-are-correlated-with-higher-anesthetic-risk-score-a-case-control-study-in-brazil
#18
Leonardo Hideto Nagaya, Mauro José Costa Salles, Lucas Sadawo Chagas Takikawa, Marcelo Fregoneze, Pedro Doneux, Luciana Andrade da Silva, Guilherme do Val Sella, Alberto Naoki Miyazaki, Sergio Luiz Checchia
PURPOSES: Shoulder arthroplasty (SA) has been performed by many years for the treatment of several conditions, including osteoarthritis and proximal humeral fractures following trauma. Surgical site infection (SSI) following SA remains a challenge, contributing to increased morbidity and costs. Identification of risk factors may help implementing adequate strategies to prevent infection. We aimed to identify pre- and intra-operative risk factors associated with deep infections after SA...
July 10, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28704171/a-bioluminescent-pseudomonas-aeruginosa-wound-model-reveals-increased-mortality-of-type-1-diabetic-mice-to-biofilm-infection
#19
Agostinho Hunt A M, Gibson J A, Larrivee C L, O'Reilly S, Navitskaya S, Needle D B, Abramovitch R B, Busik J V, Waters C M
OBJECTIVE: To examine how bacterial biofilms, as contributing factors in the delayed closure of chronic wounds in patients with diabetes, affect the healing process. METHOD: We used daily microscopic imaging and the IVIS Spectrum in vivo imaging system to monitor biofilm infections of bioluminescent Pseudomonas aeruginosa and evaluate healing in non-diabetic and streptozotocin-induced diabetic mice. RESULTS: Our studies determined that diabetes alone did not affect the rate of healing of full-depth murine back wounds compared with non-diabetic mice...
July 1, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28702079/rare-bacterial-isolates-causing-bloodstream-infections-in-ethiopian-patients-with-cancer
#20
Balew Arega, Yimtubezinash Wolde-Amanuel, Kelemework Adane, Ezra Belay, Abdulaziz Abubeker, Daniel Asrat
BACKGROUND: In recent years, saprophytic bacteria have been emerging as potential human pathogens causing life-threatening infections in patients with malignancies. However, evidence is lacking concerning such bacteria, particularly in sub-Saharan countries. This study was designed to determine the spectrum and drug resistance profile of the rare bacterial pathogens causing bloodstream infections (BSIs) in febrile cancer patients at a referral hospital in Ethiopia. METHODS: Between December 2011 and June 2012, blood samples were collected from 107 patients with cancer in Tikur Anbessa hospital...
2017: Infectious Agents and Cancer
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