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https://www.readbyqxmd.com/read/28103165/burn-wound-healing-present-concepts-treatment-strategies-and-future-directions
#1
A Oryan, E Alemzadeh, A Moshiri
Burns are the most extensive forms of soft tissue injuries occasionally resulting in extensive and deep wounds and death. Burns can lead to severe mental and emotional distress, because of excessive scarring and skin contractures. Treatment of burns has always been a difficult medical problem and many different methods have been used to treat such injuries, locally. Biofilms are a collection of microorganisms that delay wound healing. One of the new methods of prevention and treatment of burn wound infections is application of antimicrobials, which act on biofilms and prevent the wound infection...
January 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28102768/an-experimental-strategy-validated-to-design-cost-effective-culture-media-based-on-response-surface-methodology
#2
J L Navarrete-Bolaños, G P Téllez-Martínez, R Miranda-López, H Jiménez-Islas
For any fermentation process, the production cost depends on several factors, such as the genetics of the microorganism, the process condition and the culture medium composition. In this work, a guideline for the design of cost-efficient culture media using a sequential approach based on response surface methodology is described. The procedure was applied to analyze and optimize a culture medium of registered trademark and a base culture medium obtained as a results of the screening analysis from different culture media used to grow the same strain according to the literature...
January 19, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28101943/stability-of-color-in-spanish-style-green-table-olives-pasteurized-and-stored-in-plastic-containers
#3
Antonio Higinio Sánchez, Antonio López-López, Víctor Manuel Beato, Antonio de Castro, Alfredo Montaño
BACKGROUND: There is an increasing interest in the use of pasteurizable plastic packaging by the olive industry. In order to investigate the change from traditional glass or varnished can containers to plastic packaging, the proper plastic material that is compatible with fermented olives while maintaining color quality during pasteurization treatment and storage must be selected. This work is focused on color stability in two distinct pasteurizable plastic containers with different oxygen permeability...
January 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28101802/cold-pcr-technologies-in-the-area-of-personalized-medicine-methodology-and-applications
#4
REVIEW
Florence Mauger, Alexandre How-Kit, Jörg Tost
Somatic mutations bear great promise for use as biomarkers for personalized medicine, but are often present only in low abundance in biological material and are therefore difficult to detect. Many assays for mutation analysis in cancer-related genes (hotspots) have been developed to improve diagnosis, prognosis, prediction of drug resistance, and monitoring of the response to treatment. Two major approaches have been developed: mutation-specific amplification methods and methods that enrich and detect mutations without prior knowledge on the exact location and identity of the mutation...
January 18, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28101613/estimation-of-anaerobic-debromination-rate-constants-of-pbde-pathways-using-an-anaerobic-dehalogenation-model
#5
Filiz Karakas, Ipek Imamoglu
This study aims to estimate anaerobic debromination rate constants (km) of PBDE pathways using previously reported laboratory soil data. km values of pathways are estimated by modifying a previously developed model as Anaerobic Dehalogenation Model. Debromination activities published in the literature in terms of bromine substitutions as well as specific microorganisms and their combinations are used for identification of pathways. The range of estimated km values is between 0.0003 and 0.0241 d(-1). The median and maximum of km values are found to be comparable to the few available biologically confirmed rate constants published in the literature...
January 19, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28101462/identification-and-molecular-characterization-of-genes-coding-pharmaceutically-important-enzymes-from-halo-thermo-tolerant-bacillus
#6
Azam Safary, Rezvan Moniri, Maryam Hamzeh-Mivehroud, Siavoush Dastmalchi
Purpose: Robust pharmaceutical and industrial enzymes from extremophile microorganisms are main source of enzymes with tremendous stability under harsh conditions which make them potential tools for commercial and biotechnological applications. Methods: The genome of a Gram-positive halo-thermotolerant Bacillus sp. SL1, new isolate from Saline Lake, was investigated for the presence of genes coding for potentially pharmaceutical enzymes. We determined gene sequences for the enzymes laccase (CotA), l-asparaginase (ansA3, ansA1), glutamate-specific endopeptidase (blaSE), l-arabinose isomerase (araA2), endo-1,4-β mannosidase (gmuG), glutaminase (glsA), pectate lyase (pelA), cellulase (bglC1), aldehyde dehydrogenase (ycbD) and allantoinases (pucH) in the genome of Bacillus sp...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101334/implementation-of-short-incubation-maldi-tof-ms-identification-from-positive-blood-cultures-in-routine-diagnostics-and-effects-on-empiric-antimicrobial-therapy
#7
Robin Köck, Jörg Wüllenweber, Dagmar Horn, Christian Lanckohr, Karsten Becker, Evgeny A Idelevich
BACKGROUND: Results of blood culture (BC) diagnostics should be swiftly available to guide treatment of critically ill patients. Conventional BC diagnostics usually performs species identification of microorganisms from mature solid medium colonies. Species identification might be speed up by using matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry (MS) of biomass from shortly incubated solid media. METHODS: This single-center analysis compared the applicability of MALDI-TOF-based species identification from shortly incubated cultures in laboratory routine vs...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28100303/ethanol-glycogen-and-glucosylglycerol-represent-competing-carbon-pools-in-ethanol-producing-cells-of-synechocystis-sp-pcc-6803-under-high-salt-conditions
#8
Nadin Pade, Stefan Mikkat, Martin Hagemann
Cyanobacteria are photoautotrophic microorganisms, which are increasingly being used as microbial cell factories to produce for example ethanol directly from solar energy and CO2. Here we analyzed the effects of different salt concentrations on an ethanol-producing strain of Synechocystis sp. PCC 6803 that over-expresses the pyruvate decarboxylase (pdc) from Zymomonas mobilis and the native alcohol dehydrogenase (adhA). Moderate salinities of 2% NaCl had no negative impact on ethanol production, whereas the addition of 4% NaCl resulted in significantly decreased ethanol yields compared to low salt conditions...
January 18, 2017: Microbiology
https://www.readbyqxmd.com/read/28100131/influence-of-activated-sewage-sludge-amendment-on-pahs-removal-efficiency-from-a-naturally-contaminated-soil-application-of-the-landfarming-treatment
#9
Borislava Lukić, David Huguenot, Antonio Panico, Eric D van Hullebusch, Giovanni Esposito
The removal of polycyclic aromatic hydrocarbons (PAHs) from a naturally co-contaminated soil by PAHs and heavy metals with an initial concentration of 620 mg of total PAHs kg(-1) dry soil was investigated. The efficiency of landfarming in removing phenanthrene, pyrene, benzo(a)pyrene and the group of total 16 US EPA PAHs was evaluated. The process was biostimulated by adding centrifuged activated sewage sludge (SS) as an organic amendment. Experimental activities were conducted in four laboratory scale reactors filled with corn cobs as bulking agent to reach bulk density of 640 kg/m(3)...
January 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28100110/mortality-in-patients-with-septic-shock-by-multidrug-resistant-bacteria
#10
Stefano Busani, Giulia Serafini, Elena Mantovani, Claudia Venturelli, Maddalena Giannella, Pierluigi Viale, Cristina Mussini, Andrea Cossarizza, Massimo Girardis
BACKGROUND: Patients with septic shock by multidrug resistant (MDR) microorganism maybe considered a specific population of critical patients at very high risk of death in whom the effects of standard sepsis treatment has never been assessed. The objective of this retrospective analysis was to evaluate the risk factors for 30-day mortality and the impact of sepsis management in patients with septic shock caused by MDR bacteria. METHODS: Patients with septic shock by MDR bacteria admitted to the mixed intensive care unit (ICU) of Modena University Hospital during a 6-year period were studied...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28100018/conversion-of-amazon-rainforest-to-agriculture-alters-community-traits-of-methane-cycling-organisms
#11
Kyle M Meyer, Ann M Klein, Jorge L M Rodrigues, Klaus Nüsslein, Susannah G Tringe, Babur S Mirza, James M Tiedje, Brendan J M Bohannan
Land use change is one of the greatest environmental impacts worldwide, especially to tropical forests. The Amazon rainforest has been subject to particularly high rates of land use change, primarily to cattle pasture. A commonly observed response to cattle pasture establishment in the Amazon is the conversion of soil from a methane sink in rainforest, to a methane source in pasture. However, it is not known how the microorganisms that mediate methane flux are altered by land use change. Here we use the deepest metagenomic sequencing of Amazonian soil to date to investigate differences in methane-cycling microorganisms and their traits across rainforest and cattle pasture soils...
January 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28099457/comparing-and-evaluating-metagenome-assembly-tools-from-a-microbiologist-s-perspective-not-only-size-matters
#12
John Vollmers, Sandra Wiegand, Anne-Kristin Kaster
With the constant improvement in cost-efficiency and quality of Next Generation Sequencing technologies, shotgun-sequencing approaches -such as metagenomics- have nowadays become the methods of choice for studying and classifying microorganisms from various habitats. The production of data has dramatically increased over the past years and processing and analysis steps are becoming more and more of a bottleneck. Limiting factors are partly the availability of computational resources, but mainly the bioinformatics expertise in establishing and applying appropriate processing and analysis pipelines...
2017: PloS One
https://www.readbyqxmd.com/read/28098812/novel-aflatoxin-degrading-enzyme-from-bacillus-shackletonii-l7
#13
Liang Xu, Mohamed Farah Eisa Ahmed, Lancine Sangare, Yueju Zhao, Jonathan Nimal Selvaraj, Fuguo Xing, Yan Wang, Hongping Yang, Yang Liu
Food and feed contamination by aflatoxin (AF)B₁ has adverse economic and health consequences. AFB₁ degradation by microorganisms or microbial enzymes provides a promising preventive measure. To this end, the present study tested 43 bacterial isolates collected from maize, rice, and soil samples for AFB₁-reducing activity. The higher activity was detected in isolate L7, which was identified as Bacillus shackletonii. L7 reduced AFB₁, AFB₂, and AFM₁ levels by 92.1%, 84.1%, and 90.4%, respectively, after 72 h at 37 °C...
January 14, 2017: Toxins
https://www.readbyqxmd.com/read/28098790/synthesis-structure-and-antimicrobial-properties-of-novel-benzalkonium-chloride-analogues-with-pyridine-rings
#14
Bogumił Brycki, Izabela Małecka, Anna Koziróg, Anna Otlewska
Quaternary ammonium compounds (QACs) are a group of compounds of great economic significance. They are widely used as emulsifiers, detergents, solubilizers and corrosion inhibitors in household and industrial products. Due to their excellent antimicrobial activity QACs have also gained a special meaning as antimicrobials in hospitals, agriculture and the food industry. The main representatives of the microbiocidal QACs are the benzalkonium chlorides (BACs), which exhibit biocidal activity against most bacteria, fungi, algae and some viruses...
January 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28098752/microbiological-load-of-edible-insects-found-in-belgium
#15
Rudy Caparros Megido, Sandrine Desmedt, Christophe Blecker, François Béra, Éric Haubruge, Taofic Alabi, Frédéric Francis
Edible insects are gaining more and more attention as a sustainable source of animal protein for food and feed in the future. In Belgium, some insect products can be found on the market, and consumers are sourcing fresh insects from fishing stores or towards traditional markets to find exotic insects that are illegal and not sanitarily controlled. From this perspective, this study aims to characterize the microbial load of edible insects found in Belgium (i.e., fresh mealworms and house crickets from European farms and smoked termites and caterpillars from a traditional Congolese market) and to evaluate the efficiency of different processing methods (blanching for all species and freeze-drying and sterilization for European species) in reducing microorganism counts...
January 13, 2017: Insects
https://www.readbyqxmd.com/read/28098358/subclinical-alteration-of-the-cervical-vaginal-microbiome-in-women-with-idiopathic-infertility
#16
Giuseppina Campisciano, Fiorella Florian, Angela D'Eustacchio, David Stanković, Giuseppe Ricci, Manola Comar
Biomarkers have a wide application in research and clinic, they help to choose the correct treatment for diseases. Recent studies, addressing the vaginal microbiome using next generation sequencing (NGS), reported the involvement of bacterial species in infertility. We compared the vaginal microbiome of idiopathic infertility diagnosed women with that of healthy, non-idiopathic infertile and bacterial vaginosis affected women, to identify bacterial species suitable as biomarkers. Information on microorganisms was obtained from the V3-16S rDNA sequencing of cervical-vaginal fluids of 96 women using the Ion Torrent platform...
January 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28098357/partial-purification-characterization-and-thermal-inactivation-kinetics-of-peroxidase-and-polyphenol-oxidase-isolated-from-kalipatti-sapota-manilkara-zapota
#17
Vishwasrao Chandrahas, Chakraborty Snehasis, Ananthanarayan Laxmi
BACKGROUND: The extraction, purification, and characterization of peroxidase (POD) and polyphenol oxidase (PPO) were studied for Kalipatti sapota fruit. The crude enzyme extract was partially purified by ammonium sulfate precipitation followed by BioGel P100 size exclusion and Unosphere Q anion-exchange chromatography. RESULTS: Molecular weights of 20 kDa (POD) and 24 kDa (PPO) were indicated by SDS-PAGE. A single band was observed on SDS-PAGE with a fold purity of 10...
January 18, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28097888/bioprocess-enhancement-of-feather-degradation-using-alkaliphilic-microbial-mixture
#18
Y Osman, A Elsayed, A M Mowafy, A A Elrazak, M Fawzy
1. The main aim of this work is to develop a robust method to generate a microbial mixture which can successfully degrade poultry feathers to overcome environmental problems. 2. Four different alkaliphilic microbes were isolated and shown to to degrade poultry feathers. 3. Two of the isolates were phylogenetically identified as Lysinibacillus and the others were identified as Nocardiopsis and Micrococcus. 4. The best microbial co-culture for white and black feather degradation were optimised for pH, temperature and relative population of the isolates to achieve almost 96% of degradation compared to a maximum of 31% when applying each isolate individually...
January 18, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28097843/colonization-and-infection-in-the-newborn-infant-does-chlorhexidine-play-a-role-in-infection-prevention
#19
Lizeth Ortegón, Marcela Puentes-Herrera, Ivohne F Corrales, Jorge A Cortés
Healthcare-associated infections are a major problem in newborn infants, considering their high morbidity, mortality, and long-term sequelae. In preterm infants, it has been shown that skin and gastrointestinal tract colonization undergoes variations compared to healthy term infants, and that preterm infants are more exposed to nosocomial microorganisms given their higher probability of being admitted to the neonatal intensive care unit where they are cared for. This document reviews normal colonization, the changes observed during hospitalization, prematurity, and the potential role of chlorhexidine in the prevention of resistant microorganism transmission, as well as its side effects in newborn infants admitted to the neonatal intensive care unit...
1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28097645/bacterial-subversion-of-camp-signalling-inhibits-cathelicidin-expression-which-is-required-for-innate-resistance-to-mycobacterium-tuberculosis
#20
Shashank Gupta, Kathryn Winglee, Richard Gallo, William R Bishai
Antimicrobial peptides such as cathelicidins are an important component of innate immune defence against inhaled microorganisms and have demonstrated antimicrobial activity against Mycobacterium tuberculosis with in vitro models. Despite this, little is known about the regulation and expression of cathelicidin during tuberculosis in vivo. We sought to determine whether the cathelicidin-related antimicrobial peptide (Cramp) gene, the murine functional homologue of the human cathelicidin gene (CAMP or LL-37), is required for regulating protective immunity during M...
January 18, 2017: Journal of Pathology
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